Applications: Move to Userland/Applications/

285 files changed, 0 insertions, 37234 deletions

diff --git a/Applications/About/CMakeLists.txt b/Applications/About/CMakeLists.txt
deleted file mode 100644
index 0b3023c819..0000000000
--- a/Applications/About/CMakeLists.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-set(SOURCES
-    main.cpp
-)
-
-execute_process(COMMAND "git rev-parse --short HEAD" OUTPUT_VARIABLE GIT_COMMIT)
-execute_process(COMMAND "git rev-parse --abbrev-ref HEAD" OUTPUT_VARIABLE GIT_BRANCH)
-execute_process(COMMAND "git diff-index --quiet HEAD -- && echo tracked || echo untracked" OUTPUT_VARIABLE GIT_CHANGES)
-
-add_definitions(-DGIT_COMMIT="${GIT_COMMIT}" -DGIT_BRANCH="${GIT_BRANCH}" -DGIT_CHANGES="${GIT_CHANGES}")
-
-serenity_bin(About)
-target_link_libraries(About LibGUI)
diff --git a/Applications/About/main.cpp b/Applications/About/main.cpp
deleted file mode 100644
index b7e18caee3..0000000000
--- a/Applications/About/main.cpp
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibGUI/AboutDialog.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/Icon.h>
-#include <LibGfx/Bitmap.h>
-#include <stdio.h>
-#include <sys/utsname.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio shared_buffer accept rpath unix cpath fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio shared_buffer accept rpath", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    unveil(nullptr, nullptr);
-
-    auto app_icon = GUI::Icon::default_icon("ladybug");
-    GUI::AboutDialog::show("SerenityOS", nullptr, nullptr, app_icon.bitmap_for_size(32));
-    return app->exec();
-}
diff --git a/Applications/Browser/BookmarksBarWidget.cpp b/Applications/Browser/BookmarksBarWidget.cpp
deleted file mode 100644
index ef9af48a60..0000000000
--- a/Applications/Browser/BookmarksBarWidget.cpp
+++ /dev/null
@@ -1,241 +0,0 @@
-/*
- * Copyright (c) 2020, Emanuel Sprung <emanuel.sprung@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "BookmarksBarWidget.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/Event.h>
-#include <LibGUI/JsonArrayModel.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Model.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Palette.h>
-
-namespace Browser {
-
-static BookmarksBarWidget* s_the;
-
-BookmarksBarWidget& BookmarksBarWidget::the()
-{
-    return *s_the;
-}
-
-BookmarksBarWidget::BookmarksBarWidget(const String& bookmarks_file, bool enabled)
-{
-    s_the = this;
-    set_layout<GUI::HorizontalBoxLayout>();
-    layout()->set_spacing(0);
-
-    set_fixed_height(20);
-
-    if (!enabled)
-        set_visible(false);
-
-    m_additional = GUI::Button::construct();
-    m_additional->set_button_style(Gfx::ButtonStyle::CoolBar);
-    m_additional->set_text(">");
-    m_additional->set_fixed_size(14, 20);
-    m_additional->set_focus_policy(GUI::FocusPolicy::TabFocus);
-    m_additional->on_click = [this](auto) {
-        if (m_additional_menu) {
-            m_additional_menu->popup(m_additional->relative_position().translated(relative_position().translated(m_additional->window()->position())));
-        }
-    };
-
-    m_separator = GUI::Widget::construct();
-
-    m_context_menu = GUI::Menu::construct();
-    auto default_action = GUI::Action::create("Open", [this](auto&) {
-        if (on_bookmark_click)
-            on_bookmark_click(m_context_menu_url, Mod_None);
-    });
-    m_context_menu_default_action = default_action;
-    m_context_menu->add_action(default_action);
-    m_context_menu->add_action(GUI::Action::create("Open in new tab", [this](auto&) {
-        if (on_bookmark_click)
-            on_bookmark_click(m_context_menu_url, Mod_Ctrl);
-    }));
-    m_context_menu->add_action(GUI::Action::create("Delete", [this](auto&) {
-        remove_bookmark(m_context_menu_url);
-    }));
-
-    Vector<GUI::JsonArrayModel::FieldSpec> fields;
-    fields.empend("title", "Title", Gfx::TextAlignment::CenterLeft);
-    fields.empend("url", "Url", Gfx::TextAlignment::CenterRight);
-    set_model(GUI::JsonArrayModel::create(bookmarks_file, move(fields)));
-    model()->update();
-}
-
-BookmarksBarWidget::~BookmarksBarWidget()
-{
-    if (m_model)
-        m_model->unregister_client(*this);
-}
-
-void BookmarksBarWidget::set_model(RefPtr<GUI::Model> model)
-{
-    if (model == m_model)
-        return;
-    if (m_model)
-        m_model->unregister_client(*this);
-    m_model = move(model);
-    m_model->register_client(*this);
-}
-
-void BookmarksBarWidget::resize_event(GUI::ResizeEvent& event)
-{
-    Widget::resize_event(event);
-    update_content_size();
-}
-
-void BookmarksBarWidget::model_did_update(unsigned)
-{
-    remove_all_children();
-
-    m_bookmarks.clear();
-
-    int width = 0;
-    for (int item_index = 0; item_index < model()->row_count(); ++item_index) {
-
-        auto title = model()->index(item_index, 0).data().to_string();
-        auto url = model()->index(item_index, 1).data().to_string();
-
-        Gfx::IntRect rect { width, 0, font().width(title) + 32, height() };
-
-        auto& button = add<GUI::Button>();
-        m_bookmarks.append(button);
-
-        button.set_button_style(Gfx::ButtonStyle::CoolBar);
-        button.set_text(title);
-        button.set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/filetype-html.png"));
-        button.set_fixed_size(font().width(title) + 32, 20);
-        button.set_relative_rect(rect);
-        button.set_focus_policy(GUI::FocusPolicy::TabFocus);
-        button.set_tooltip(url);
-
-        button.on_click = [title, url, this](auto modifiers) {
-            if (on_bookmark_click)
-                on_bookmark_click(url, modifiers);
-        };
-
-        button.on_context_menu_request = [this, url](auto& context_menu_event) {
-            m_context_menu_url = url;
-            m_context_menu->popup(context_menu_event.screen_position(), m_context_menu_default_action);
-        };
-
-        width += rect.width();
-    }
-
-    add_child(*m_separator);
-    add_child(*m_additional);
-
-    update_content_size();
-    update();
-}
-
-void BookmarksBarWidget::update_content_size()
-{
-    int x_position = 0;
-    m_last_visible_index = -1;
-
-    for (size_t i = 0; i < m_bookmarks.size(); ++i) {
-        auto& bookmark = m_bookmarks.at(i);
-        if (x_position + bookmark.width() > width()) {
-            m_last_visible_index = i;
-            break;
-        }
-        bookmark.set_x(x_position);
-        bookmark.set_visible(true);
-        x_position += bookmark.width();
-    }
-
-    if (m_last_visible_index < 0) {
-        m_additional->set_visible(false);
-    } else {
-        // hide all items > m_last_visible_index and create new bookmarks menu for them
-        m_additional->set_visible(true);
-        m_additional_menu = GUI::Menu::construct("Additional Bookmarks");
-        for (size_t i = m_last_visible_index; i < m_bookmarks.size(); ++i) {
-            auto& bookmark = m_bookmarks.at(i);
-            bookmark.set_visible(false);
-            m_additional_menu->add_action(GUI::Action::create(bookmark.text(),
-                Gfx::Bitmap::load_from_file("/res/icons/16x16/filetype-html.png"),
-                [&](auto&) {
-                    bookmark.on_click(0);
-                }));
-        }
-    }
-}
-
-bool BookmarksBarWidget::contains_bookmark(const String& url)
-{
-    for (int item_index = 0; item_index < model()->row_count(); ++item_index) {
-
-        auto item_title = model()->index(item_index, 0).data().to_string();
-        auto item_url = model()->index(item_index, 1).data().to_string();
-        if (item_url == url) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool BookmarksBarWidget::remove_bookmark(const String& url)
-{
-    for (int item_index = 0; item_index < model()->row_count(); ++item_index) {
-
-        auto item_title = model()->index(item_index, 0).data().to_string();
-        auto item_url = model()->index(item_index, 1).data().to_string();
-        if (item_url == url) {
-            auto& json_model = *static_cast<GUI::JsonArrayModel*>(model());
-
-            const auto item_removed = json_model.remove(item_index);
-            if (item_removed)
-                json_model.store();
-
-            return item_removed;
-        }
-    }
-
-    return false;
-}
-bool BookmarksBarWidget::add_bookmark(const String& url, const String& title)
-{
-    Vector<JsonValue> values;
-    values.append(title);
-    values.append(url);
-
-    auto& json_model = *static_cast<GUI::JsonArrayModel*>(model());
-    if (json_model.add(move(values))) {
-        json_model.store();
-        return true;
-    }
-    return false;
-}
-
-}
diff --git a/Applications/Browser/BookmarksBarWidget.h b/Applications/Browser/BookmarksBarWidget.h
deleted file mode 100644
index 2eeed8fec5..0000000000
--- a/Applications/Browser/BookmarksBarWidget.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (c) 2020, Emanuel Sprung <emanuel.sprung@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Forward.h>
-#include <LibGUI/Model.h>
-#include <LibGUI/Widget.h>
-
-namespace Browser {
-
-class BookmarksBarWidget final
-    : public GUI::Widget
-    , private GUI::ModelClient {
-    C_OBJECT(BookmarksBarWidget);
-
-public:
-    static BookmarksBarWidget& the();
-
-    virtual ~BookmarksBarWidget() override;
-
-    void set_model(RefPtr<GUI::Model>);
-    GUI::Model* model() { return m_model.ptr(); }
-    const GUI::Model* model() const { return m_model.ptr(); }
-
-    Function<void(const String& url, unsigned modifiers)> on_bookmark_click;
-    Function<void(const String&, const String&)> on_bookmark_hover;
-
-    bool contains_bookmark(const String& url);
-    bool remove_bookmark(const String& url);
-    bool add_bookmark(const String& url, const String& title);
-
-private:
-    BookmarksBarWidget(const String&, bool enabled);
-
-    // ^GUI::ModelClient
-    virtual void model_did_update(unsigned) override;
-
-    // ^GUI::Widget
-    virtual void resize_event(GUI::ResizeEvent&) override;
-
-    void update_content_size();
-
-    RefPtr<GUI::Model> m_model;
-    RefPtr<GUI::Button> m_additional;
-    RefPtr<GUI::Widget> m_separator;
-    RefPtr<GUI::Menu> m_additional_menu;
-
-    RefPtr<GUI::Menu> m_context_menu;
-    RefPtr<GUI::Action> m_context_menu_default_action;
-    String m_context_menu_url;
-
-    NonnullRefPtrVector<GUI::Button> m_bookmarks;
-
-    int m_last_visible_index { -1 };
-};
-
-}
diff --git a/Applications/Browser/Browser.h b/Applications/Browser/Browser.h
deleted file mode 100644
index a4a4eefe1f..0000000000
--- a/Applications/Browser/Browser.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/String.h>
-
-namespace Browser {
-
-extern String g_home_url;
-
-}
diff --git a/Applications/Browser/BrowserConsoleClient.cpp b/Applications/Browser/BrowserConsoleClient.cpp
deleted file mode 100644
index ce1dd7e5cb..0000000000
--- a/Applications/Browser/BrowserConsoleClient.cpp
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * Copyright (c) 2020, Hunter Salyer <thefalsehonesty@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "BrowserConsoleClient.h"
-#include "ConsoleWidget.h"
-#include <AK/StringBuilder.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/JSSyntaxHighlighter.h>
-#include <LibGUI/TextBox.h>
-#include <LibWeb/DOM/DocumentType.h>
-#include <LibWeb/DOM/ElementFactory.h>
-#include <LibWeb/DOM/Text.h>
-#include <LibWeb/DOMTreeModel.h>
-#include <LibWeb/HTML/HTMLBodyElement.h>
-
-namespace Browser {
-
-JS::Value BrowserConsoleClient::log()
-{
-    m_console_widget.print_html(vm().join_arguments());
-    return JS::js_undefined();
-}
-
-JS::Value BrowserConsoleClient::info()
-{
-    StringBuilder html;
-    html.append("<span class=\"info\">");
-    html.append("(i) ");
-    html.append(vm().join_arguments());
-    html.append("</span>");
-    m_console_widget.print_html(html.string_view());
-    return JS::js_undefined();
-}
-
-JS::Value BrowserConsoleClient::debug()
-{
-    StringBuilder html;
-    html.append("<span class=\"debug\">");
-    html.append("(d) ");
-    html.append(vm().join_arguments());
-    html.append("</span>");
-    m_console_widget.print_html(html.string_view());
-    return JS::js_undefined();
-}
-
-JS::Value BrowserConsoleClient::warn()
-{
-    StringBuilder html;
-    html.append("<span class=\"warn\">");
-    html.append("(w) ");
-    html.append(vm().join_arguments());
-    html.append("</span>");
-    m_console_widget.print_html(html.string_view());
-    return JS::js_undefined();
-}
-
-JS::Value BrowserConsoleClient::error()
-{
-    StringBuilder html;
-    html.append("<span class=\"error\">");
-    html.append("(e) ");
-    html.append(vm().join_arguments());
-    html.append("</span>");
-    m_console_widget.print_html(html.string_view());
-    return JS::js_undefined();
-}
-
-JS::Value BrowserConsoleClient::clear()
-{
-    m_console_widget.clear_output();
-    return JS::js_undefined();
-}
-
-JS::Value BrowserConsoleClient::trace()
-{
-    StringBuilder html;
-    html.append(vm().join_arguments());
-    auto trace = get_trace();
-    for (auto& function_name : trace) {
-        if (function_name.is_empty())
-            function_name = "&lt;anonymous&gt;";
-        html.appendff(" -> {}<br>", function_name);
-    }
-    m_console_widget.print_html(html.string_view());
-    return JS::js_undefined();
-}
-
-JS::Value BrowserConsoleClient::count()
-{
-    auto label = vm().argument_count() ? vm().argument(0).to_string_without_side_effects() : "default";
-    auto counter_value = m_console.counter_increment(label);
-    m_console_widget.print_html(String::formatted("{}: {}", label, counter_value));
-    return JS::js_undefined();
-}
-
-JS::Value BrowserConsoleClient::count_reset()
-{
-    auto label = vm().argument_count() ? vm().argument(0).to_string_without_side_effects() : "default";
-    if (m_console.counter_reset(label)) {
-        m_console_widget.print_html(String::formatted("{}: 0", label));
-    } else {
-        m_console_widget.print_html(String::formatted("\"{}\" doesn't have a count", label));
-    }
-    return JS::js_undefined();
-}
-
-}
diff --git a/Applications/Browser/BrowserConsoleClient.h b/Applications/Browser/BrowserConsoleClient.h
deleted file mode 100644
index e87f6e32b0..0000000000
--- a/Applications/Browser/BrowserConsoleClient.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2020, Hunter Salyer <thefalsehonesty@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Widget.h>
-#include <LibJS/Console.h>
-#include <LibJS/Forward.h>
-#include <LibWeb/InProcessWebView.h>
-
-namespace Browser {
-
-class ConsoleWidget;
-
-class BrowserConsoleClient final : public JS::ConsoleClient {
-public:
-    BrowserConsoleClient(JS::Console& console, ConsoleWidget& console_widget)
-        : ConsoleClient(console)
-        , m_console_widget(console_widget)
-    {
-    }
-
-private:
-    virtual JS::Value log() override;
-    virtual JS::Value info() override;
-    virtual JS::Value debug() override;
-    virtual JS::Value warn() override;
-    virtual JS::Value error() override;
-    virtual JS::Value clear() override;
-    virtual JS::Value trace() override;
-    virtual JS::Value count() override;
-    virtual JS::Value count_reset() override;
-
-    ConsoleWidget& m_console_widget;
-};
-
-}
diff --git a/Applications/Browser/BrowserWindow.gml b/Applications/Browser/BrowserWindow.gml
deleted file mode 100644
index f6ec7ef1af..0000000000
--- a/Applications/Browser/BrowserWindow.gml
+++ /dev/null
@@ -1,15 +0,0 @@
-@GUI::Widget {
-    name: "browser"
-    fill_with_background_color: true
-
-    layout: @GUI::VerticalBoxLayout {
-        spacing: 2
-    }
-
-    @GUI::TabWidget {
-        name: "tab_widget"
-        container_padding: 0
-        uniform_tabs: true
-        text_alignment: "CenterLeft"
-    }
-}
diff --git a/Applications/Browser/CMakeLists.txt b/Applications/Browser/CMakeLists.txt
deleted file mode 100644
index 4652ec8b11..0000000000
--- a/Applications/Browser/CMakeLists.txt
+++ /dev/null
@@ -1,19 +0,0 @@
-compile_gml(BrowserWindow.gml BrowserWindowGML.h browser_window_gml)
-compile_gml(Tab.gml TabGML.h tab_gml)
-
-set(SOURCES
-    BookmarksBarWidget.cpp
-    BrowserConsoleClient.cpp
-    ConsoleWidget.cpp
-    DownloadWidget.cpp
-    History.cpp
-    InspectorWidget.cpp
-    main.cpp
-    Tab.cpp
-    WindowActions.cpp
-    BrowserWindowGML.h
-    TabGML.h
-)
-
-serenity_app(Browser ICON app-browser)
-target_link_libraries(Browser LibWeb LibProtocol LibGUI LibDesktop)
diff --git a/Applications/Browser/ConsoleWidget.cpp b/Applications/Browser/ConsoleWidget.cpp
deleted file mode 100644
index 55c545dc55..0000000000
--- a/Applications/Browser/ConsoleWidget.cpp
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * Copyright (c) 2020, Hunter Salyer <thefalsehonesty@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ConsoleWidget.h"
-#include <AK/StringBuilder.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/JSSyntaxHighlighter.h>
-#include <LibGUI/TextBox.h>
-#include <LibGfx/FontDatabase.h>
-#include <LibJS/Interpreter.h>
-#include <LibJS/MarkupGenerator.h>
-#include <LibJS/Parser.h>
-#include <LibJS/Runtime/Error.h>
-#include <LibWeb/DOM/DocumentType.h>
-#include <LibWeb/DOM/ElementFactory.h>
-#include <LibWeb/DOM/Text.h>
-#include <LibWeb/DOMTreeModel.h>
-#include <LibWeb/HTML/HTMLBodyElement.h>
-
-namespace Browser {
-
-ConsoleWidget::ConsoleWidget()
-{
-    set_layout<GUI::VerticalBoxLayout>();
-    set_fill_with_background_color(true);
-
-    auto base_document = Web::DOM::Document::create();
-    base_document->append_child(adopt(*new Web::DOM::DocumentType(base_document)));
-    auto html_element = base_document->create_element("html");
-    base_document->append_child(html_element);
-    auto head_element = base_document->create_element("head");
-    html_element->append_child(head_element);
-    auto body_element = base_document->create_element("body");
-    html_element->append_child(body_element);
-    m_output_container = body_element;
-
-    m_output_view = add<Web::InProcessWebView>();
-    m_output_view->set_document(base_document);
-
-    auto& bottom_container = add<GUI::Widget>();
-    bottom_container.set_layout<GUI::HorizontalBoxLayout>();
-    bottom_container.set_fixed_height(22);
-
-    m_input = bottom_container.add<GUI::TextBox>();
-    m_input->set_syntax_highlighter(make<GUI::JSSyntaxHighlighter>());
-    // FIXME: Syntax Highlighting breaks the cursor's position on non fixed-width fonts.
-    m_input->set_font(Gfx::FontDatabase::default_fixed_width_font());
-    m_input->set_history_enabled(true);
-
-    m_input->on_return_pressed = [this] {
-        auto js_source = m_input->text();
-
-        // FIXME: An is_blank check to check if there is only whitespace would probably be preferable.
-        if (js_source.is_empty())
-            return;
-
-        m_input->add_current_text_to_history();
-        m_input->clear();
-
-        print_source_line(js_source);
-
-        auto parser = JS::Parser(JS::Lexer(js_source));
-        auto program = parser.parse_program();
-
-        StringBuilder output_html;
-        if (parser.has_errors()) {
-            auto error = parser.errors()[0];
-            auto hint = error.source_location_hint(js_source);
-            if (!hint.is_empty())
-                output_html.append(String::formatted("<pre>{}</pre>", escape_html_entities(hint)));
-            m_interpreter->vm().throw_exception<JS::SyntaxError>(m_interpreter->global_object(), error.to_string());
-        } else {
-            m_interpreter->run(m_interpreter->global_object(), *program);
-        }
-
-        if (m_interpreter->exception()) {
-            output_html.append("Uncaught exception: ");
-            output_html.append(JS::MarkupGenerator::html_from_value(m_interpreter->exception()->value()));
-            print_html(output_html.string_view());
-
-            m_interpreter->vm().clear_exception();
-            return;
-        }
-
-        print_html(JS::MarkupGenerator::html_from_value(m_interpreter->vm().last_value()));
-    };
-
-    set_focus_proxy(m_input);
-
-    auto& clear_button = bottom_container.add<GUI::Button>();
-    clear_button.set_fixed_size(22, 22);
-    clear_button.set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/delete.png"));
-    clear_button.set_tooltip("Clear the console output");
-    clear_button.on_click = [this](auto) {
-        clear_output();
-    };
-}
-
-ConsoleWidget::~ConsoleWidget()
-{
-}
-
-void ConsoleWidget::set_interpreter(WeakPtr<JS::Interpreter> interpreter)
-{
-    if (m_interpreter.ptr() == interpreter.ptr())
-        return;
-
-    m_interpreter = interpreter;
-    m_console_client = make<BrowserConsoleClient>(interpreter->global_object().console(), *this);
-    interpreter->global_object().console().set_client(*m_console_client.ptr());
-
-    clear_output();
-}
-
-void ConsoleWidget::print_source_line(const StringView& source)
-{
-    StringBuilder html;
-    html.append("<span class=\"repl-indicator\">");
-    html.append("&gt; ");
-    html.append("</span>");
-
-    html.append(JS::MarkupGenerator::html_from_source(source));
-
-    print_html(html.string_view());
-}
-
-void ConsoleWidget::print_html(const StringView& line)
-{
-    auto paragraph = m_output_container->document().create_element("p");
-    paragraph->set_inner_html(line);
-
-    m_output_container->append_child(paragraph);
-    m_output_container->document().invalidate_layout();
-    m_output_container->document().update_layout();
-
-    m_output_view->scroll_to_bottom();
-}
-
-void ConsoleWidget::clear_output()
-{
-    m_output_container->remove_all_children();
-    m_output_view->update();
-}
-
-}
diff --git a/Applications/Browser/ConsoleWidget.h b/Applications/Browser/ConsoleWidget.h
deleted file mode 100644
index 813ceed2ed..0000000000
--- a/Applications/Browser/ConsoleWidget.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 2020, Hunter Salyer <thefalsehonesty@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "BrowserConsoleClient.h"
-#include "History.h"
-#include <LibGUI/Widget.h>
-#include <LibJS/Forward.h>
-#include <LibWeb/InProcessWebView.h>
-
-namespace Browser {
-
-class ConsoleWidget final : public GUI::Widget {
-    C_OBJECT(ConsoleWidget)
-public:
-    virtual ~ConsoleWidget();
-
-    void set_interpreter(WeakPtr<JS::Interpreter>);
-    void print_source_line(const StringView&);
-    void print_html(const StringView&);
-    void clear_output();
-
-private:
-    ConsoleWidget();
-
-    RefPtr<GUI::TextBox> m_input;
-    RefPtr<Web::InProcessWebView> m_output_view;
-    RefPtr<Web::DOM::Element> m_output_container;
-    WeakPtr<JS::Interpreter> m_interpreter;
-    OwnPtr<BrowserConsoleClient> m_console_client;
-};
-
-}
diff --git a/Applications/Browser/DownloadWidget.cpp b/Applications/Browser/DownloadWidget.cpp
deleted file mode 100644
index 39d931e216..0000000000
--- a/Applications/Browser/DownloadWidget.cpp
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "DownloadWidget.h"
-#include <AK/NumberFormat.h>
-#include <AK/SharedBuffer.h>
-#include <AK/StringBuilder.h>
-#include <LibCore/File.h>
-#include <LibCore/FileStream.h>
-#include <LibCore/StandardPaths.h>
-#include <LibDesktop/Launcher.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/ImageWidget.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/ProgressBar.h>
-#include <LibGUI/Window.h>
-#include <LibProtocol/Client.h>
-#include <LibWeb/Loader/ResourceLoader.h>
-#include <math.h>
-
-namespace Browser {
-
-DownloadWidget::DownloadWidget(const URL& url)
-    : m_url(url)
-{
-    {
-        StringBuilder builder;
-        builder.append(Core::StandardPaths::downloads_directory());
-        builder.append('/');
-        builder.append(m_url.basename());
-        m_destination_path = builder.to_string();
-    }
-
-    m_elapsed_timer.start();
-    m_download = Web::ResourceLoader::the().protocol_client().start_download("GET", url.to_string());
-    ASSERT(m_download);
-    m_download->on_progress = [this](Optional<u32> total_size, u32 downloaded_size) {
-        did_progress(total_size.value(), downloaded_size);
-    };
-
-    {
-        auto file_or_error = Core::File::open(m_destination_path, Core::IODevice::WriteOnly);
-        if (file_or_error.is_error()) {
-            GUI::MessageBox::show(window(), String::formatted("Cannot open {} for writing", m_destination_path), "Download failed", GUI::MessageBox::Type::Error);
-            window()->close();
-            return;
-        }
-        m_output_file_stream = make<Core::OutputFileStream>(*file_or_error.value());
-    }
-
-    m_download->on_finish = [this](bool success, auto) { did_finish(success); };
-    m_download->stream_into(*m_output_file_stream);
-
-    set_fill_with_background_color(true);
-    auto& layout = set_layout<GUI::VerticalBoxLayout>();
-    layout.set_margins({ 4, 4, 4, 4 });
-
-    auto& animation_container = add<GUI::Widget>();
-    animation_container.set_fixed_height(32);
-    auto& animation_layout = animation_container.set_layout<GUI::HorizontalBoxLayout>();
-
-    auto& browser_image = animation_container.add<GUI::ImageWidget>();
-    browser_image.load_from_file("/res/graphics/download-animation.gif");
-    animation_layout.add_spacer();
-
-    auto& source_label = add<GUI::Label>(String::formatted("From: {}", url));
-    source_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    source_label.set_fixed_height(16);
-
-    m_progress_bar = add<GUI::ProgressBar>();
-    m_progress_bar->set_fixed_height(20);
-
-    m_progress_label = add<GUI::Label>();
-    m_progress_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    m_progress_label->set_fixed_height(16);
-
-    auto& destination_label = add<GUI::Label>(String::formatted("To: {}", m_destination_path));
-    destination_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    destination_label.set_fixed_height(16);
-
-    auto& button_container = add<GUI::Widget>();
-    auto& button_container_layout = button_container.set_layout<GUI::HorizontalBoxLayout>();
-    button_container_layout.add_spacer();
-    m_cancel_button = button_container.add<GUI::Button>("Cancel");
-    m_cancel_button->set_fixed_size(100, 22);
-    m_cancel_button->on_click = [this](auto) {
-        bool success = m_download->stop();
-        ASSERT(success);
-        window()->close();
-    };
-
-    m_close_button = button_container.add<GUI::Button>("OK");
-    m_close_button->set_enabled(false);
-    m_close_button->set_fixed_size(100, 22);
-    m_close_button->on_click = [this](auto) {
-        window()->close();
-    };
-}
-
-DownloadWidget::~DownloadWidget()
-{
-}
-
-void DownloadWidget::did_progress(Optional<u32> total_size, u32 downloaded_size)
-{
-    m_progress_bar->set_min(0);
-    if (total_size.has_value()) {
-        int percent = roundf(((float)downloaded_size / (float)total_size.value()) * 100.0f);
-        window()->set_progress(percent);
-        m_progress_bar->set_max(total_size.value());
-    } else {
-        m_progress_bar->set_max(0);
-    }
-    m_progress_bar->set_value(downloaded_size);
-
-    {
-        StringBuilder builder;
-        builder.append("Downloaded ");
-        builder.append(human_readable_size(downloaded_size));
-        builder.appendff(" in {} sec", m_elapsed_timer.elapsed() / 1000);
-        m_progress_label->set_text(builder.to_string());
-    }
-
-    {
-        StringBuilder builder;
-        if (total_size.has_value()) {
-            int percent = roundf(((float)downloaded_size / (float)total_size.value()) * 100);
-            builder.appendff("{}%", percent);
-        } else {
-            builder.append(human_readable_size(downloaded_size));
-        }
-        builder.append(" of ");
-        builder.append(m_url.basename());
-        window()->set_title(builder.to_string());
-    }
-}
-
-void DownloadWidget::did_finish(bool success)
-{
-    dbgln("did_finish, success={}", success);
-
-    m_close_button->set_enabled(true);
-    m_cancel_button->set_text("Open in Folder");
-    m_cancel_button->on_click = [this](auto) {
-        Desktop::Launcher::open(URL::create_with_file_protocol(Core::StandardPaths::downloads_directory()));
-        window()->close();
-    };
-    m_cancel_button->update();
-
-    if (!success) {
-        GUI::MessageBox::show(window(), String::formatted("Download failed for some reason"), "Download failed", GUI::MessageBox::Type::Error);
-        window()->close();
-        return;
-    }
-}
-
-}
diff --git a/Applications/Browser/DownloadWidget.h b/Applications/Browser/DownloadWidget.h
deleted file mode 100644
index 44fc21c60d..0000000000
--- a/Applications/Browser/DownloadWidget.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/URL.h>
-#include <LibCore/ElapsedTimer.h>
-#include <LibCore/FileStream.h>
-#include <LibGUI/ProgressBar.h>
-#include <LibGUI/Widget.h>
-#include <LibProtocol/Download.h>
-
-namespace Browser {
-
-class DownloadWidget final : public GUI::Widget {
-    C_OBJECT(DownloadWidget);
-
-public:
-    virtual ~DownloadWidget() override;
-
-private:
-    explicit DownloadWidget(const URL&);
-
-    void did_progress(Optional<u32> total_size, u32 downloaded_size);
-    void did_finish(bool success);
-
-    URL m_url;
-    String m_destination_path;
-    RefPtr<Protocol::Download> m_download;
-    RefPtr<GUI::ProgressBar> m_progress_bar;
-    RefPtr<GUI::Label> m_progress_label;
-    RefPtr<GUI::Button> m_cancel_button;
-    RefPtr<GUI::Button> m_close_button;
-    OwnPtr<Core::OutputFileStream> m_output_file_stream;
-    Core::ElapsedTimer m_elapsed_timer;
-};
-
-}
diff --git a/Applications/Browser/History.cpp b/Applications/Browser/History.cpp
deleted file mode 100644
index cecf28477c..0000000000
--- a/Applications/Browser/History.cpp
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "History.h"
-
-namespace Browser {
-
-void History::dump() const
-{
-    dbgln("Dump {} items(s)", m_items.size());
-    int i = 0;
-    for (auto& item : m_items) {
-        dbgln("[{}] {} {}", i, item, m_current == i ? '*' : ' ');
-        ++i;
-    }
-}
-
-void History::push(const URL& url)
-{
-    m_items.shrink(m_current + 1);
-    m_items.append(url);
-    m_current++;
-}
-
-URL History::current() const
-{
-    if (m_current == -1)
-        return {};
-    return m_items[m_current];
-}
-
-void History::go_back()
-{
-    ASSERT(can_go_back());
-    m_current--;
-}
-
-void History::go_forward()
-{
-    ASSERT(can_go_forward());
-    m_current++;
-}
-
-void History::clear()
-{
-    m_items = {};
-    m_current = -1;
-}
-
-}
diff --git a/Applications/Browser/History.h b/Applications/Browser/History.h
deleted file mode 100644
index 84fc4151d7..0000000000
--- a/Applications/Browser/History.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/URL.h>
-#include <AK/Vector.h>
-
-namespace Browser {
-
-class History {
-public:
-    void dump() const;
-
-    void push(const URL&);
-    URL current() const;
-
-    void go_back();
-    void go_forward();
-
-    bool can_go_back() { return m_current > 0; }
-    bool can_go_forward() { return m_current + 1 < static_cast<int>(m_items.size()); }
-
-    void clear();
-
-private:
-    Vector<URL> m_items;
-    int m_current { -1 };
-};
-
-}
diff --git a/Applications/Browser/InspectorWidget.cpp b/Applications/Browser/InspectorWidget.cpp
deleted file mode 100644
index 7e9111e513..0000000000
--- a/Applications/Browser/InspectorWidget.cpp
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "InspectorWidget.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Splitter.h>
-#include <LibGUI/TabWidget.h>
-#include <LibGUI/TableView.h>
-#include <LibGUI/TreeView.h>
-#include <LibWeb/DOM/Document.h>
-#include <LibWeb/DOM/Element.h>
-#include <LibWeb/DOMTreeModel.h>
-#include <LibWeb/LayoutTreeModel.h>
-#include <LibWeb/StylePropertiesModel.h>
-
-namespace Browser {
-
-void InspectorWidget::set_inspected_node(Web::DOM::Node* node)
-{
-    m_document->set_inspected_node(node);
-    if (node && node->is_element()) {
-        auto& element = downcast<Web::DOM::Element>(*node);
-        if (element.specified_css_values()) {
-            m_style_table_view->set_model(Web::StylePropertiesModel::create(*element.specified_css_values()));
-            m_computed_style_table_view->set_model(Web::StylePropertiesModel::create(*element.computed_style()));
-        }
-    } else {
-        m_style_table_view->set_model(nullptr);
-        m_computed_style_table_view->set_model(nullptr);
-    }
-}
-
-InspectorWidget::InspectorWidget()
-{
-    set_layout<GUI::VerticalBoxLayout>();
-    auto& splitter = add<GUI::VerticalSplitter>();
-
-    auto& top_tab_widget = splitter.add<GUI::TabWidget>();
-
-    m_dom_tree_view = top_tab_widget.add_tab<GUI::TreeView>("DOM");
-    m_dom_tree_view->on_selection = [this](auto& index) {
-        auto* node = static_cast<Web::DOM::Node*>(index.internal_data());
-        set_inspected_node(node);
-    };
-
-    m_layout_tree_view = top_tab_widget.add_tab<GUI::TreeView>("Layout");
-    m_layout_tree_view->on_selection = [this](auto& index) {
-        auto* node = static_cast<Web::Layout::Node*>(index.internal_data());
-        set_inspected_node(node->dom_node());
-    };
-
-    auto& bottom_tab_widget = splitter.add<GUI::TabWidget>();
-
-    m_style_table_view = bottom_tab_widget.add_tab<GUI::TableView>("Styles");
-    m_computed_style_table_view = bottom_tab_widget.add_tab<GUI::TableView>("Computed");
-}
-
-InspectorWidget::~InspectorWidget()
-{
-}
-
-void InspectorWidget::set_document(Web::DOM::Document* document)
-{
-    if (m_document == document)
-        return;
-    m_document = document;
-    m_dom_tree_view->set_model(Web::DOMTreeModel::create(*document));
-    m_layout_tree_view->set_model(Web::LayoutTreeModel::create(*document));
-}
-
-}
diff --git a/Applications/Browser/InspectorWidget.h b/Applications/Browser/InspectorWidget.h
deleted file mode 100644
index 37f0f95754..0000000000
--- a/Applications/Browser/InspectorWidget.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Widget.h>
-#include <LibWeb/Forward.h>
-
-namespace Browser {
-
-class InspectorWidget final : public GUI::Widget {
-    C_OBJECT(InspectorWidget)
-public:
-    virtual ~InspectorWidget();
-
-    void set_document(Web::DOM::Document*);
-
-private:
-    InspectorWidget();
-
-    void set_inspected_node(Web::DOM::Node*);
-
-    RefPtr<GUI::TreeView> m_dom_tree_view;
-    RefPtr<GUI::TreeView> m_layout_tree_view;
-    RefPtr<GUI::TableView> m_style_table_view;
-    RefPtr<GUI::TableView> m_computed_style_table_view;
-    RefPtr<Web::DOM::Document> m_document;
-};
-
-}
diff --git a/Applications/Browser/Tab.cpp b/Applications/Browser/Tab.cpp
deleted file mode 100644
index ea23d61d73..0000000000
--- a/Applications/Browser/Tab.cpp
+++ /dev/null
@@ -1,550 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Tab.h"
-#include "BookmarksBarWidget.h"
-#include "Browser.h"
-#include "ConsoleWidget.h"
-#include "DownloadWidget.h"
-#include "InspectorWidget.h"
-#include "WindowActions.h"
-#include <AK/StringBuilder.h>
-#include <Applications/Browser/TabGML.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/Clipboard.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/StatusBar.h>
-#include <LibGUI/TabWidget.h>
-#include <LibGUI/TextBox.h>
-#include <LibGUI/ToolBar.h>
-#include <LibGUI/ToolBarContainer.h>
-#include <LibGUI/Window.h>
-#include <LibJS/Interpreter.h>
-#include <LibWeb/CSS/Parser/CSSParser.h>
-#include <LibWeb/DOM/Element.h>
-#include <LibWeb/DOMTreeModel.h>
-#include <LibWeb/Dump.h>
-#include <LibWeb/InProcessWebView.h>
-#include <LibWeb/Layout/BlockBox.h>
-#include <LibWeb/Layout/InitialContainingBlockBox.h>
-#include <LibWeb/Layout/InlineNode.h>
-#include <LibWeb/Layout/Node.h>
-#include <LibWeb/Loader/ResourceLoader.h>
-#include <LibWeb/OutOfProcessWebView.h>
-#include <LibWeb/Page/Frame.h>
-
-namespace Browser {
-
-URL url_from_user_input(const String& input)
-{
-    auto url = URL(input);
-    if (url.is_valid())
-        return url;
-
-    StringBuilder builder;
-    builder.append("http://");
-    builder.append(input);
-    return URL(builder.build());
-}
-
-static void start_download(const URL& url)
-{
-    auto window = GUI::Window::construct();
-    window->resize(300, 150);
-    window->set_title(String::formatted("0% of {}", url.basename()));
-    window->set_resizable(false);
-    window->set_main_widget<DownloadWidget>(url);
-    window->show();
-    [[maybe_unused]] auto& unused = window.leak_ref();
-}
-
-Tab::Tab(Type type)
-    : m_type(type)
-{
-    load_from_gml(tab_gml);
-
-    m_toolbar_container = *find_descendant_of_type_named<GUI::ToolBarContainer>("toolbar_container");
-    auto& toolbar = *find_descendant_of_type_named<GUI::ToolBar>("toolbar");
-
-    auto& webview_container = *find_descendant_of_type_named<GUI::Widget>("webview_container");
-
-    if (m_type == Type::InProcessWebView)
-        m_page_view = webview_container.add<Web::InProcessWebView>();
-    else
-        m_web_content_view = webview_container.add<Web::OutOfProcessWebView>();
-
-    m_go_back_action = GUI::CommonActions::make_go_back_action([this](auto&) { go_back(); }, this);
-    m_go_forward_action = GUI::CommonActions::make_go_forward_action([this](auto&) { go_forward(); }, this);
-
-    toolbar.add_action(*m_go_back_action);
-    toolbar.add_action(*m_go_forward_action);
-
-    toolbar.add_action(GUI::CommonActions::make_go_home_action([this](auto&) { load(g_home_url); }, this));
-    m_reload_action = GUI::CommonActions::make_reload_action([this](auto&) { reload(); }, this);
-
-    toolbar.add_action(*m_reload_action);
-
-    m_location_box = toolbar.add<GUI::TextBox>();
-    m_location_box->set_placeholder("Address");
-
-    m_location_box->on_return_pressed = [this] {
-        auto url = url_from_user_input(m_location_box->text());
-        load(url);
-        view().set_focus(true);
-    };
-
-    m_location_box->add_custom_context_menu_action(GUI::Action::create("Paste & Go", [this](auto&) {
-        m_location_box->set_text(GUI::Clipboard::the().data());
-        m_location_box->on_return_pressed();
-    }));
-
-    m_bookmark_button = toolbar.add<GUI::Button>();
-    m_bookmark_button->set_button_style(Gfx::ButtonStyle::CoolBar);
-    m_bookmark_button->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/bookmark-contour.png"));
-    m_bookmark_button->set_fixed_size(22, 22);
-
-    m_bookmark_button->on_click = [this](auto) {
-        auto url = this->url().to_string();
-        if (BookmarksBarWidget::the().contains_bookmark(url)) {
-            BookmarksBarWidget::the().remove_bookmark(url);
-        } else {
-            BookmarksBarWidget::the().add_bookmark(url, m_title);
-        }
-        update_bookmark_button(url);
-    };
-
-    hooks().on_load_start = [this](auto& url) {
-        m_location_box->set_icon(nullptr);
-        m_location_box->set_text(url.to_string());
-
-        // don't add to history if back or forward is pressed
-        if (!m_is_history_navigation)
-            m_history.push(url);
-        m_is_history_navigation = false;
-
-        update_actions();
-        update_bookmark_button(url.to_string());
-    };
-
-    hooks().on_link_click = [this](auto& url, auto& target, unsigned modifiers) {
-        if (target == "_blank" || modifiers == Mod_Ctrl) {
-            on_tab_open_request(url);
-        } else {
-            load(url);
-        }
-    };
-
-    m_link_context_menu = GUI::Menu::construct();
-    auto link_default_action = GUI::Action::create("Open", [this](auto&) {
-        hooks().on_link_click(m_link_context_menu_url, "", 0);
-    });
-    m_link_context_menu->add_action(link_default_action);
-    m_link_context_menu_default_action = link_default_action;
-    m_link_context_menu->add_action(GUI::Action::create("Open in new tab", [this](auto&) {
-        hooks().on_link_click(m_link_context_menu_url, "_blank", 0);
-    }));
-    m_link_context_menu->add_separator();
-    m_link_context_menu->add_action(GUI::Action::create("Copy link", [this](auto&) {
-        GUI::Clipboard::the().set_plain_text(m_link_context_menu_url.to_string());
-    }));
-    m_link_context_menu->add_separator();
-    m_link_context_menu->add_action(GUI::Action::create("Download", [this](auto&) {
-        start_download(m_link_context_menu_url);
-    }));
-
-    hooks().on_link_context_menu_request = [this](auto& url, auto& screen_position) {
-        m_link_context_menu_url = url;
-        m_link_context_menu->popup(screen_position, m_link_context_menu_default_action);
-    };
-
-    m_image_context_menu = GUI::Menu::construct();
-    m_image_context_menu->add_action(GUI::Action::create("Open image", [this](auto&) {
-        hooks().on_link_click(m_image_context_menu_url, "", 0);
-    }));
-    m_image_context_menu->add_action(GUI::Action::create("Open image in new tab", [this](auto&) {
-        hooks().on_link_click(m_image_context_menu_url, "_blank", 0);
-    }));
-    m_image_context_menu->add_separator();
-    m_image_context_menu->add_action(GUI::Action::create("Copy image", [this](auto&) {
-        if (m_image_context_menu_bitmap.is_valid())
-            GUI::Clipboard::the().set_bitmap(*m_image_context_menu_bitmap.bitmap());
-    }));
-    m_image_context_menu->add_action(GUI::Action::create("Copy image URL", [this](auto&) {
-        GUI::Clipboard::the().set_plain_text(m_image_context_menu_url.to_string());
-    }));
-    m_image_context_menu->add_separator();
-    m_image_context_menu->add_action(GUI::Action::create("Download", [this](auto&) {
-        start_download(m_image_context_menu_url);
-    }));
-
-    hooks().on_image_context_menu_request = [this](auto& image_url, auto& screen_position, const Gfx::ShareableBitmap& shareable_bitmap) {
-        m_image_context_menu_url = image_url;
-        m_image_context_menu_bitmap = shareable_bitmap;
-        m_image_context_menu->popup(screen_position);
-    };
-
-    hooks().on_link_middle_click = [this](auto& href, auto&, auto) {
-        hooks().on_link_click(href, "_blank", 0);
-    };
-
-    hooks().on_title_change = [this](auto& title) {
-        if (title.is_null()) {
-            m_title = url().to_string();
-        } else {
-            m_title = title;
-        }
-        if (on_title_change)
-            on_title_change(m_title);
-    };
-
-    hooks().on_favicon_change = [this](auto& icon) {
-        m_icon = icon;
-        m_location_box->set_icon(&icon);
-        if (on_favicon_change)
-            on_favicon_change(icon);
-    };
-
-    // FIXME: Support JS console in multi-process mode.
-    if (m_type == Type::InProcessWebView) {
-        hooks().on_set_document = [this](auto* document) {
-            if (document && m_console_window) {
-                auto* console_widget = static_cast<ConsoleWidget*>(m_console_window->main_widget());
-                console_widget->set_interpreter(document->interpreter().make_weak_ptr());
-            }
-        };
-    }
-
-    auto focus_location_box_action = GUI::Action::create(
-        "Focus location box", { Mod_Ctrl, Key_L }, [this](auto&) {
-            m_location_box->select_all();
-            m_location_box->set_focus(true);
-        },
-        this);
-
-    m_statusbar = *find_descendant_of_type_named<GUI::StatusBar>("statusbar");
-
-    hooks().on_link_hover = [this](auto& url) {
-        if (url.is_valid())
-            m_statusbar->set_text(url.to_string());
-        else
-            m_statusbar->set_text("");
-    };
-
-    hooks().on_url_drop = [this](auto& url) {
-        load(url);
-    };
-
-    m_menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = m_menubar->add_menu("Browser");
-    app_menu.add_action(WindowActions::the().create_new_tab_action());
-    app_menu.add_action(GUI::Action::create(
-        "Close tab", { Mod_Ctrl, Key_W }, Gfx::Bitmap::load_from_file("/res/icons/16x16/close-tab.png"), [this](auto&) {
-            on_tab_close_request(*this);
-        },
-        this));
-
-    app_menu.add_action(*m_reload_action);
-    app_menu.add_separator();
-    app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
-        GUI::Application::the()->quit();
-    }));
-
-    auto& view_menu = m_menubar->add_menu("View");
-    view_menu.add_action(GUI::CommonActions::make_fullscreen_action(
-        [this](auto&) {
-            window()->set_fullscreen(!window()->is_fullscreen());
-
-            auto is_fullscreen = window()->is_fullscreen();
-            auto* tab_widget = static_cast<GUI::TabWidget*>(parent_widget());
-            tab_widget->set_bar_visible(!is_fullscreen && tab_widget->children().size() > 1);
-            m_toolbar_container->set_visible(!is_fullscreen);
-            m_statusbar->set_visible(!is_fullscreen);
-        },
-        this));
-
-    auto view_source_action = GUI::Action::create(
-        "View source", { Mod_Ctrl, Key_U }, [this](auto&) {
-            if (m_type == Type::InProcessWebView) {
-                ASSERT(m_page_view->document());
-                auto url = m_page_view->document()->url().to_string();
-                auto source = m_page_view->document()->source();
-                auto window = GUI::Window::construct();
-                auto& editor = window->set_main_widget<GUI::TextEditor>();
-                editor.set_text(source);
-                editor.set_mode(GUI::TextEditor::ReadOnly);
-                editor.set_ruler_visible(true);
-                window->resize(640, 480);
-                window->set_title(url);
-                window->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/filetype-text.png"));
-                window->show();
-                [[maybe_unused]] auto& unused = window.leak_ref();
-            } else {
-                TODO();
-            }
-        },
-        this);
-
-    auto inspect_dom_tree_action = GUI::Action::create(
-        "Inspect DOM tree", { Mod_None, Key_F12 }, [this](auto&) {
-            if (m_type == Type::InProcessWebView) {
-                if (!m_dom_inspector_window) {
-                    m_dom_inspector_window = GUI::Window::construct();
-                    m_dom_inspector_window->resize(300, 500);
-                    m_dom_inspector_window->set_title("DOM inspector");
-                    m_dom_inspector_window->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/inspector-object.png"));
-                    m_dom_inspector_window->set_main_widget<InspectorWidget>();
-                }
-                auto* inspector_widget = static_cast<InspectorWidget*>(m_dom_inspector_window->main_widget());
-                inspector_widget->set_document(m_page_view->document());
-                m_dom_inspector_window->show();
-                m_dom_inspector_window->move_to_front();
-            } else {
-                TODO();
-            }
-        },
-        this);
-
-    auto& inspect_menu = m_menubar->add_menu("Inspect");
-    inspect_menu.add_action(*view_source_action);
-    inspect_menu.add_action(*inspect_dom_tree_action);
-
-    inspect_menu.add_action(GUI::Action::create(
-        "Open JS Console", { Mod_Ctrl, Key_I }, [this](auto&) {
-            if (m_type == Type::InProcessWebView) {
-                if (!m_console_window) {
-                    m_console_window = GUI::Window::construct();
-                    m_console_window->resize(500, 300);
-                    m_console_window->set_title("JS Console");
-                    m_console_window->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/filetype-javascript.png"));
-                    m_console_window->set_main_widget<ConsoleWidget>();
-                }
-                auto* console_widget = static_cast<ConsoleWidget*>(m_console_window->main_widget());
-                console_widget->set_interpreter(m_page_view->document()->interpreter().make_weak_ptr());
-                m_console_window->show();
-                m_console_window->move_to_front();
-            } else {
-                TODO();
-            }
-        },
-        this));
-
-    auto& debug_menu = m_menubar->add_menu("Debug");
-    debug_menu.add_action(GUI::Action::create(
-        "Dump DOM tree", [this](auto&) {
-            if (m_type == Type::InProcessWebView) {
-                Web::dump_tree(*m_page_view->document());
-            } else {
-                TODO();
-            }
-        },
-        this));
-    debug_menu.add_action(GUI::Action::create(
-        "Dump Layout tree", [this](auto&) {
-            if (m_type == Type::InProcessWebView) {
-                Web::dump_tree(*m_page_view->document()->layout_node());
-            } else {
-                TODO();
-            }
-        },
-        this));
-    debug_menu.add_action(GUI::Action::create(
-        "Dump Style sheets", [this](auto&) {
-            if (m_type == Type::InProcessWebView) {
-                for (auto& sheet : m_page_view->document()->style_sheets().sheets()) {
-                    Web::dump_sheet(sheet);
-                }
-            } else {
-                TODO();
-            }
-        },
-        this));
-    debug_menu.add_action(GUI::Action::create("Dump history", { Mod_Ctrl, Key_H }, [&](auto&) {
-        m_history.dump();
-    }));
-    debug_menu.add_separator();
-    auto line_box_borders_action = GUI::Action::create_checkable(
-        "Line box borders", [this](auto& action) {
-            if (m_type == Type::InProcessWebView) {
-                m_page_view->set_should_show_line_box_borders(action.is_checked());
-                m_page_view->update();
-            } else {
-                TODO();
-            }
-        },
-        this);
-    line_box_borders_action->set_checked(false);
-    debug_menu.add_action(line_box_borders_action);
-
-    debug_menu.add_separator();
-    debug_menu.add_action(GUI::Action::create("Collect garbage", { Mod_Ctrl | Mod_Shift, Key_G }, [this](auto&) {
-        if (m_type == Type::InProcessWebView) {
-            if (auto* document = m_page_view->document()) {
-                document->interpreter().heap().collect_garbage(JS::Heap::CollectionType::CollectGarbage, true);
-            }
-        } else {
-            TODO();
-        }
-    }));
-
-    auto& bookmarks_menu = m_menubar->add_menu("Bookmarks");
-    bookmarks_menu.add_action(WindowActions::the().show_bookmarks_bar_action());
-
-    auto& help_menu = m_menubar->add_menu("Help");
-    help_menu.add_action(WindowActions::the().about_action());
-
-    m_tab_context_menu = GUI::Menu::construct();
-    m_tab_context_menu->add_action(GUI::Action::create("Reload Tab", [this](auto&) {
-        m_reload_action->activate();
-    }));
-    m_tab_context_menu->add_action(GUI::Action::create("Close Tab", [this](auto&) {
-        on_tab_close_request(*this);
-    }));
-
-    m_page_context_menu = GUI::Menu::construct();
-    m_page_context_menu->add_action(*m_go_back_action);
-    m_page_context_menu->add_action(*m_go_forward_action);
-    m_page_context_menu->add_action(*m_reload_action);
-    m_page_context_menu->add_separator();
-    m_page_context_menu->add_action(*view_source_action);
-    m_page_context_menu->add_action(*inspect_dom_tree_action);
-    hooks().on_context_menu_request = [&](auto& screen_position) {
-        m_page_context_menu->popup(screen_position);
-    };
-}
-
-Tab::~Tab()
-{
-}
-
-void Tab::load(const URL& url, LoadType load_type)
-{
-    m_is_history_navigation = (load_type == LoadType::HistoryNavigation);
-
-    if (m_type == Type::InProcessWebView)
-        m_page_view->load(url);
-    else
-        m_web_content_view->load(url);
-}
-
-URL Tab::url() const
-{
-    if (m_type == Type::InProcessWebView)
-        return m_page_view->url();
-    return m_web_content_view->url();
-}
-
-void Tab::reload()
-{
-    load(url());
-}
-
-void Tab::go_back()
-{
-    m_history.go_back();
-    update_actions();
-    load(m_history.current(), LoadType::HistoryNavigation);
-}
-
-void Tab::go_forward()
-{
-    m_history.go_forward();
-    update_actions();
-    load(m_history.current(), LoadType::HistoryNavigation);
-}
-
-void Tab::update_actions()
-{
-    m_go_back_action->set_enabled(m_history.can_go_back());
-    m_go_forward_action->set_enabled(m_history.can_go_forward());
-}
-
-void Tab::update_bookmark_button(const String& url)
-{
-    if (BookmarksBarWidget::the().contains_bookmark(url)) {
-        m_bookmark_button->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/bookmark-filled.png"));
-        m_bookmark_button->set_tooltip("Remove Bookmark");
-    } else {
-        m_bookmark_button->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/bookmark-contour.png"));
-        m_bookmark_button->set_tooltip("Add Bookmark");
-    }
-}
-
-void Tab::did_become_active()
-{
-    Web::ResourceLoader::the().on_load_counter_change = [this] {
-        if (Web::ResourceLoader::the().pending_loads() == 0) {
-            m_statusbar->set_text("");
-            return;
-        }
-        m_statusbar->set_text(String::formatted("Loading ({} pending resources...)", Web::ResourceLoader::the().pending_loads()));
-    };
-
-    BookmarksBarWidget::the().on_bookmark_click = [this](auto& url, unsigned modifiers) {
-        if (modifiers & Mod_Ctrl)
-            on_tab_open_request(url);
-        else
-            load(url);
-    };
-
-    BookmarksBarWidget::the().on_bookmark_hover = [this](auto&, auto& url) {
-        m_statusbar->set_text(url);
-    };
-
-    BookmarksBarWidget::the().remove_from_parent();
-    m_toolbar_container->add_child(BookmarksBarWidget::the());
-
-    auto is_fullscreen = window()->is_fullscreen();
-    m_toolbar_container->set_visible(!is_fullscreen);
-    m_statusbar->set_visible(!is_fullscreen);
-
-    GUI::Application::the()->set_menubar(m_menubar);
-}
-
-void Tab::context_menu_requested(const Gfx::IntPoint& screen_position)
-{
-    m_tab_context_menu->popup(screen_position);
-}
-
-GUI::Widget& Tab::view()
-{
-    if (m_type == Type::InProcessWebView)
-        return *m_page_view;
-    return *m_web_content_view;
-}
-
-Web::WebViewHooks& Tab::hooks()
-{
-    if (m_type == Type::InProcessWebView)
-        return *m_page_view;
-    return *m_web_content_view;
-}
-
-}
diff --git a/Applications/Browser/Tab.gml b/Applications/Browser/Tab.gml
deleted file mode 100644
index 24c7456d77..0000000000
--- a/Applications/Browser/Tab.gml
+++ /dev/null
@@ -1,22 +0,0 @@
-@GUI::Widget {
-    layout: @GUI::VerticalBoxLayout {
-    }
-
-    @GUI::ToolBarContainer {
-        name: "toolbar_container"
-
-        @GUI::ToolBar {
-            name: "toolbar"
-        }
-    }
-
-    @GUI::Widget {
-        name: "webview_container"
-        layout: @GUI::VerticalBoxLayout {
-        }
-    }
-
-    @GUI::StatusBar {
-        name: "statusbar"
-    }
-}
diff --git a/Applications/Browser/Tab.h b/Applications/Browser/Tab.h
deleted file mode 100644
index 79f86e4931..0000000000
--- a/Applications/Browser/Tab.h
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "History.h"
-#include <AK/URL.h>
-#include <LibGUI/Widget.h>
-#include <LibGfx/ShareableBitmap.h>
-#include <LibHTTP/HttpJob.h>
-#include <LibWeb/Forward.h>
-
-namespace Web {
-class OutOfProcessWebView;
-class WebViewHooks;
-}
-
-namespace Browser {
-
-class Tab final : public GUI::Widget {
-    C_OBJECT(Tab);
-
-public:
-    enum class Type {
-        InProcessWebView,
-        OutOfProcessWebView,
-    };
-
-    virtual ~Tab() override;
-
-    URL url() const;
-
-    enum class LoadType {
-        Normal,
-        HistoryNavigation,
-    };
-
-    void load(const URL&, LoadType = LoadType::Normal);
-    void reload();
-    void go_back();
-    void go_forward();
-
-    void did_become_active();
-    void context_menu_requested(const Gfx::IntPoint& screen_position);
-
-    Function<void(String)> on_title_change;
-    Function<void(const URL&)> on_tab_open_request;
-    Function<void(Tab&)> on_tab_close_request;
-    Function<void(const Gfx::Bitmap&)> on_favicon_change;
-
-    const String& title() const { return m_title; }
-    const Gfx::Bitmap* icon() const { return m_icon; }
-
-    GUI::Widget& view();
-
-private:
-    explicit Tab(Type);
-
-    Web::WebViewHooks& hooks();
-    void update_actions();
-    void update_bookmark_button(const String& url);
-
-    Type m_type;
-
-    History m_history;
-
-    RefPtr<Web::InProcessWebView> m_page_view;
-    RefPtr<Web::OutOfProcessWebView> m_web_content_view;
-
-    RefPtr<GUI::Action> m_go_back_action;
-    RefPtr<GUI::Action> m_go_forward_action;
-    RefPtr<GUI::Action> m_reload_action;
-    RefPtr<GUI::TextBox> m_location_box;
-    RefPtr<GUI::Button> m_bookmark_button;
-    RefPtr<GUI::Window> m_dom_inspector_window;
-    RefPtr<GUI::Window> m_console_window;
-    RefPtr<GUI::StatusBar> m_statusbar;
-    RefPtr<GUI::MenuBar> m_menubar;
-    RefPtr<GUI::ToolBarContainer> m_toolbar_container;
-
-    RefPtr<GUI::Menu> m_link_context_menu;
-    RefPtr<GUI::Action> m_link_context_menu_default_action;
-    URL m_link_context_menu_url;
-
-    RefPtr<GUI::Menu> m_image_context_menu;
-    Gfx::ShareableBitmap m_image_context_menu_bitmap;
-    URL m_image_context_menu_url;
-
-    RefPtr<GUI::Menu> m_tab_context_menu;
-    RefPtr<GUI::Menu> m_page_context_menu;
-
-    String m_title;
-    RefPtr<const Gfx::Bitmap> m_icon;
-
-    bool m_is_history_navigation { false };
-};
-
-URL url_from_user_input(const String& input);
-
-}
diff --git a/Applications/Browser/WindowActions.cpp b/Applications/Browser/WindowActions.cpp
deleted file mode 100644
index ca0b12bd84..0000000000
--- a/Applications/Browser/WindowActions.cpp
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "WindowActions.h"
-#include <LibGUI/Icon.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-
-namespace Browser {
-
-static WindowActions* s_the;
-
-WindowActions& WindowActions::the()
-{
-    ASSERT(s_the);
-    return *s_the;
-}
-
-WindowActions::WindowActions(GUI::Window& window)
-{
-    ASSERT(!s_the);
-    s_the = this;
-    m_create_new_tab_action = GUI::Action::create(
-        "New tab", { Mod_Ctrl, Key_T }, Gfx::Bitmap::load_from_file("/res/icons/16x16/new-tab.png"), [this](auto&) {
-            if (on_create_new_tab)
-                on_create_new_tab();
-        },
-        &window);
-
-    m_next_tab_action = GUI::Action::create(
-        "Next tab", { Mod_Ctrl, Key_PageDown }, [this](auto&) {
-            if (on_next_tab)
-                on_next_tab();
-        },
-        &window);
-
-    m_previous_tab_action = GUI::Action::create(
-        "Previous tab", { Mod_Ctrl, Key_PageUp }, [this](auto&) {
-            if (on_previous_tab)
-                on_previous_tab();
-        },
-        &window);
-
-    m_about_action = GUI::Action::create(
-        "About Browser", GUI::Icon::default_icon("app-browser").bitmap_for_size(16), [this](const GUI::Action&) {
-            if (on_about)
-                on_about();
-        },
-        &window);
-    m_show_bookmarks_bar_action = GUI::Action::create_checkable(
-        "Show bookmarks bar",
-        [this](auto& action) {
-            if (on_show_bookmarks_bar)
-                on_show_bookmarks_bar(action);
-        },
-        &window);
-}
-
-}
diff --git a/Applications/Browser/WindowActions.h b/Applications/Browser/WindowActions.h
deleted file mode 100644
index 3212321837..0000000000
--- a/Applications/Browser/WindowActions.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Action.h>
-
-namespace Browser {
-
-class WindowActions {
-public:
-    static WindowActions& the();
-
-    WindowActions(GUI::Window&);
-
-    Function<void()> on_create_new_tab;
-    Function<void()> on_next_tab;
-    Function<void()> on_previous_tab;
-    Function<void()> on_about;
-    Function<void(GUI::Action&)> on_show_bookmarks_bar;
-
-    GUI::Action& create_new_tab_action() { return *m_create_new_tab_action; }
-    GUI::Action& next_tab_action() { return *m_next_tab_action; }
-    GUI::Action& previous_tab_action() { return *m_previous_tab_action; }
-    GUI::Action& about_action() { return *m_about_action; }
-    GUI::Action& show_bookmarks_bar_action() { return *m_show_bookmarks_bar_action; }
-
-private:
-    RefPtr<GUI::Action> m_create_new_tab_action;
-    RefPtr<GUI::Action> m_next_tab_action;
-    RefPtr<GUI::Action> m_previous_tab_action;
-    RefPtr<GUI::Action> m_about_action;
-    RefPtr<GUI::Action> m_show_bookmarks_bar_action;
-};
-
-}
diff --git a/Applications/Browser/main.cpp b/Applications/Browser/main.cpp
deleted file mode 100644
index d83b68f5f4..0000000000
--- a/Applications/Browser/main.cpp
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "BookmarksBarWidget.h"
-#include "Browser.h"
-#include "InspectorWidget.h"
-#include "Tab.h"
-#include "WindowActions.h"
-#include <AK/StringBuilder.h>
-#include <Applications/Browser/BrowserWindowGML.h>
-#include <LibCore/ArgsParser.h>
-#include <LibCore/ConfigFile.h>
-#include <LibCore/File.h>
-#include <LibCore/StandardPaths.h>
-#include <LibDesktop/Launcher.h>
-#include <LibGUI/AboutDialog.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/TabWidget.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <LibWeb/Loader/ContentFilter.h>
-#include <LibWeb/Loader/ResourceLoader.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-namespace Browser {
-
-String g_home_url;
-bool g_multi_process = false;
-
-static String bookmarks_file_path()
-{
-    StringBuilder builder;
-    builder.append(Core::StandardPaths::config_directory());
-    builder.append("/bookmarks.json");
-    return builder.to_string();
-}
-
-}
-
-int main(int argc, char** argv)
-{
-    if (getuid() == 0) {
-        warnln("Refusing to run as root");
-        return 1;
-    }
-
-    if (pledge("stdio shared_buffer accept unix cpath rpath wpath fattr sendfd recvfd", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    const char* specified_url = nullptr;
-
-    Core::ArgsParser args_parser;
-    args_parser.add_option(Browser::g_multi_process, "Multi-process mode", "multi-process", 'm');
-    args_parser.add_positional_argument(specified_url, "URL to open", "url", Core::ArgsParser::Required::No);
-    args_parser.parse(argc, argv);
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    // Connect to the ProtocolServer immediately so we can drop the "unix" pledge.
-    Web::ResourceLoader::the();
-
-    // Connect to LaunchServer immediately and let it know that we won't ask for anything other than opening
-    // the user's downloads directory.
-    // FIXME: This should go away with a standalone download manager at some point.
-    if (!Desktop::Launcher::add_allowed_url(URL::create_with_file_protocol(Core::StandardPaths::downloads_directory()))
-        || !Desktop::Launcher::seal_allowlist()) {
-        warnln("Failed to set up allowed launch URLs");
-        return 1;
-    }
-
-    if (pledge("stdio shared_buffer accept unix cpath rpath wpath sendfd recvfd", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/home", "rwc") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/etc/passwd", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/tmp/portal/image", "rw") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/tmp/portal/webcontent", "rw") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    unveil(nullptr, nullptr);
-
-    auto app_icon = GUI::Icon::default_icon("app-browser");
-
-    auto m_config = Core::ConfigFile::get_for_app("Browser");
-    Browser::g_home_url = m_config->read_entry("Preferences", "Home", "about:blank");
-
-    auto ad_filter_list_or_error = Core::File::open(String::formatted("{}/BrowserContentFilters.txt", Core::StandardPaths::config_directory()), Core::IODevice::ReadOnly);
-    if (!ad_filter_list_or_error.is_error()) {
-        auto& ad_filter_list = *ad_filter_list_or_error.value();
-        while (!ad_filter_list.eof()) {
-            auto line = ad_filter_list.read_line();
-            if (line.is_empty())
-                continue;
-            Web::ContentFilter::the().add_pattern(line);
-        }
-    }
-
-    bool bookmarksbar_enabled = true;
-    auto bookmarks_bar = Browser::BookmarksBarWidget::construct(Browser::bookmarks_file_path(), bookmarksbar_enabled);
-
-    auto window = GUI::Window::construct();
-    window->resize(640, 480);
-    window->set_icon(app_icon.bitmap_for_size(16));
-    window->set_title("Browser");
-
-    auto& widget = window->set_main_widget<GUI::Widget>();
-    widget.load_from_gml(browser_window_gml);
-
-    auto& tab_widget = *widget.find_descendant_of_type_named<GUI::TabWidget>("tab_widget");
-
-    auto default_favicon = Gfx::Bitmap::load_from_file("/res/icons/16x16/filetype-html.png");
-    ASSERT(default_favicon);
-
-    tab_widget.on_change = [&](auto& active_widget) {
-        auto& tab = static_cast<Browser::Tab&>(active_widget);
-        window->set_title(String::formatted("{} - Browser", tab.title()));
-        tab.did_become_active();
-    };
-
-    tab_widget.on_middle_click = [&](auto& clicked_widget) {
-        auto& tab = static_cast<Browser::Tab&>(clicked_widget);
-        tab.on_tab_close_request(tab);
-    };
-
-    tab_widget.on_context_menu_request = [&](auto& clicked_widget, const GUI::ContextMenuEvent& context_menu_event) {
-        auto& tab = static_cast<Browser::Tab&>(clicked_widget);
-        tab.context_menu_requested(context_menu_event.screen_position());
-    };
-
-    Browser::WindowActions window_actions(*window);
-
-    Function<void(URL url, bool activate)> create_new_tab;
-    create_new_tab = [&](auto url, auto activate) {
-        auto type = Browser::g_multi_process ? Browser::Tab::Type::OutOfProcessWebView : Browser::Tab::Type::InProcessWebView;
-        auto& new_tab = tab_widget.add_tab<Browser::Tab>("New tab", type);
-
-        tab_widget.set_bar_visible(!window->is_fullscreen() && tab_widget.children().size() > 1);
-        tab_widget.set_tab_icon(new_tab, default_favicon);
-
-        new_tab.on_title_change = [&](auto title) {
-            tab_widget.set_tab_title(new_tab, title);
-            if (tab_widget.active_widget() == &new_tab)
-                window->set_title(String::formatted("{} - Browser", title));
-        };
-
-        new_tab.on_favicon_change = [&](auto& bitmap) {
-            tab_widget.set_tab_icon(new_tab, &bitmap);
-        };
-
-        new_tab.on_tab_open_request = [&](auto& url) {
-            create_new_tab(url, true);
-        };
-
-        new_tab.on_tab_close_request = [&](auto& tab) {
-            tab_widget.deferred_invoke([&](auto&) {
-                tab_widget.remove_tab(tab);
-                tab_widget.set_bar_visible(!window->is_fullscreen() && tab_widget.children().size() > 1);
-                if (tab_widget.children().is_empty())
-                    app->quit();
-            });
-        };
-
-        new_tab.load(url);
-
-        dbgln("Added new tab {:p}, loading {}", &new_tab, url);
-
-        if (activate)
-            tab_widget.set_active_widget(&new_tab);
-    };
-
-    URL first_url = Browser::g_home_url;
-    if (specified_url) {
-        if (Core::File::exists(specified_url)) {
-            first_url = URL::create_with_file_protocol(Core::File::real_path_for(specified_url));
-        } else {
-            first_url = Browser::url_from_user_input(specified_url);
-        }
-    }
-
-    window_actions.on_create_new_tab = [&] {
-        create_new_tab(Browser::g_home_url, true);
-    };
-
-    window_actions.on_next_tab = [&] {
-        tab_widget.activate_next_tab();
-    };
-
-    window_actions.on_previous_tab = [&] {
-        tab_widget.activate_previous_tab();
-    };
-
-    window_actions.on_about = [&] {
-        GUI::AboutDialog::show("Browser", app_icon.bitmap_for_size(32), window);
-    };
-
-    window_actions.on_show_bookmarks_bar = [&](auto& action) {
-        Browser::BookmarksBarWidget::the().set_visible(action.is_checked());
-    };
-    window_actions.show_bookmarks_bar_action().set_checked(bookmarksbar_enabled);
-
-    create_new_tab(first_url, true);
-    window->show();
-
-    return app->exec();
-}
diff --git a/Applications/CMakeLists.txt b/Applications/CMakeLists.txt
deleted file mode 100644
index 41803202e6..0000000000
--- a/Applications/CMakeLists.txt
+++ /dev/null
@@ -1,26 +0,0 @@
-add_subdirectory(About)
-add_subdirectory(Browser)
-add_subdirectory(Calculator)
-add_subdirectory(Calendar)
-add_subdirectory(CrashReporter)
-add_subdirectory(Debugger)
-add_subdirectory(DisplaySettings)
-add_subdirectory(FileManager)
-add_subdirectory(FontEditor)
-add_subdirectory(Help)
-add_subdirectory(HexEditor)
-add_subdirectory(IRCClient)
-add_subdirectory(KeyboardMapper)
-add_subdirectory(KeyboardSettings)
-add_subdirectory(MouseSettings)
-add_subdirectory(Piano)
-add_subdirectory(PixelPaint)
-add_subdirectory(QuickShow)
-add_subdirectory(SoundPlayer)
-add_subdirectory(SpaceAnalyzer)
-add_subdirectory(Spreadsheet)
-add_subdirectory(SystemMonitor)
-add_subdirectory(ThemeEditor)
-add_subdirectory(Terminal)
-add_subdirectory(TextEditor)
-add_subdirectory(Welcome)
diff --git a/Applications/Calculator/CMakeLists.txt b/Applications/Calculator/CMakeLists.txt
deleted file mode 100644
index d72624c308..0000000000
--- a/Applications/Calculator/CMakeLists.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-compile_gml(CalculatorWindow.gml CalculatorGML.h calculator_gml)
-set(SOURCES
-    main.cpp
-    Calculator.cpp
-    CalculatorWidget.cpp
-    Keypad.cpp
-    CalculatorGML.h
-)
-
-serenity_app(Calculator ICON app-calculator)
-target_link_libraries(Calculator LibGUI)
diff --git a/Applications/Calculator/Calculator.cpp b/Applications/Calculator/Calculator.cpp
deleted file mode 100644
index c324fb84b9..0000000000
--- a/Applications/Calculator/Calculator.cpp
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Calculator.h"
-#include <AK/Assertions.h>
-#include <math.h>
-
-Calculator::Calculator()
-{
-}
-
-Calculator::~Calculator()
-{
-}
-
-double Calculator::begin_operation(Operation operation, double argument)
-{
-    double res = 0.0;
-
-    switch (operation) {
-    case Operation::None:
-        ASSERT_NOT_REACHED();
-
-    case Operation::Add:
-    case Operation::Subtract:
-    case Operation::Multiply:
-    case Operation::Divide:
-        m_saved_argument = argument;
-        m_operation_in_progress = operation;
-        return argument;
-
-    case Operation::Sqrt:
-        if (argument < 0.0) {
-            m_has_error = true;
-            return argument;
-        }
-        res = sqrt(argument);
-        clear_operation();
-        break;
-    case Operation::Inverse:
-        if (argument == 0.0) {
-            m_has_error = true;
-            return argument;
-        }
-        res = 1 / argument;
-        clear_operation();
-        break;
-    case Operation::Percent:
-        res = argument * 0.01;
-        break;
-    case Operation::ToggleSign:
-        res = -argument;
-        break;
-
-    case Operation::MemClear:
-        m_mem = 0.0;
-        res = argument;
-        break;
-    case Operation::MemRecall:
-        res = m_mem;
-        break;
-    case Operation::MemSave:
-        m_mem = argument;
-        res = argument;
-        break;
-    case Operation::MemAdd:
-        m_mem += argument;
-        res = m_mem;
-        break;
-    }
-
-    return res;
-}
-
-double Calculator::finish_operation(double argument)
-{
-    double res = 0.0;
-
-    switch (m_operation_in_progress) {
-    case Operation::None:
-        return argument;
-
-    case Operation::Add:
-        res = m_saved_argument + argument;
-        break;
-    case Operation::Subtract:
-        res = m_saved_argument - argument;
-        break;
-    case Operation::Multiply:
-        res = m_saved_argument * argument;
-        break;
-    case Operation::Divide:
-        if (argument == 0.0) {
-            m_has_error = true;
-            return argument;
-        }
-        res = m_saved_argument / argument;
-        break;
-
-    case Operation::Sqrt:
-    case Operation::Inverse:
-    case Operation::Percent:
-    case Operation::ToggleSign:
-    case Operation::MemClear:
-    case Operation::MemRecall:
-    case Operation::MemSave:
-    case Operation::MemAdd:
-        ASSERT_NOT_REACHED();
-    }
-
-    clear_operation();
-    return res;
-}
-
-void Calculator::clear_operation()
-{
-    m_operation_in_progress = Operation::None;
-    m_saved_argument = 0.0;
-    clear_error();
-}
diff --git a/Applications/Calculator/Calculator.h b/Applications/Calculator/Calculator.h
deleted file mode 100644
index c53e31c397..0000000000
--- a/Applications/Calculator/Calculator.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-// This type implements the regular calculator
-// behavior, such as performing arithmetic
-// operations and providing a memory cell.
-// It does not deal with number input; you
-// have to pass in already parsed double
-// values.
-
-class Calculator final {
-public:
-    Calculator();
-    ~Calculator();
-
-    enum class Operation {
-        None,
-        Add,
-        Subtract,
-        Multiply,
-        Divide,
-
-        Sqrt,
-        Inverse,
-        Percent,
-        ToggleSign,
-
-        MemClear,
-        MemRecall,
-        MemSave,
-        MemAdd
-    };
-
-    double begin_operation(Operation, double);
-    double finish_operation(double);
-
-    bool has_error() const { return m_has_error; }
-
-    void clear_operation();
-    void clear_error() { m_has_error = false; }
-
-private:
-    Operation m_operation_in_progress { Operation::None };
-    double m_saved_argument { 0.0 };
-    double m_mem { 0.0 };
-    bool m_has_error { false };
-};
diff --git a/Applications/Calculator/CalculatorWidget.cpp b/Applications/Calculator/CalculatorWidget.cpp
deleted file mode 100644
index 083edae93b..0000000000
--- a/Applications/Calculator/CalculatorWidget.cpp
+++ /dev/null
@@ -1,208 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * Copyright (c) 2021 Glenford Williams <gw_dev@outlook.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "CalculatorWidget.h"
-#include "Applications/Calculator/CalculatorGML.h"
-#include <AK/Assertions.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/TextBox.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/FontDatabase.h>
-#include <LibGfx/Palette.h>
-
-CalculatorWidget::CalculatorWidget()
-{
-    load_from_gml(calculator_gml);
-
-    m_entry = *find_descendant_of_type_named<GUI::TextBox>("entry_textbox");
-    m_entry->set_relative_rect(5, 5, 244, 26);
-    m_entry->set_text_alignment(Gfx::TextAlignment::CenterRight);
-    m_entry->set_font(Gfx::FontDatabase::default_fixed_width_font());
-
-    m_label = *find_descendant_of_type_named<GUI::Label>("label");
-
-    m_label->set_frame_shadow(Gfx::FrameShadow::Sunken);
-    m_label->set_frame_shape(Gfx::FrameShape::Container);
-    m_label->set_frame_thickness(2);
-
-    for (int i = 0; i < 10; i++) {
-        m_digit_button[i] = *find_descendant_of_type_named<GUI::Button>(String::formatted("{}_button", i));
-        add_digit_button(*m_digit_button[i], i);
-    }
-
-    m_mem_add_button = *find_descendant_of_type_named<GUI::Button>("mem_add_button");
-    add_operation_button(*m_mem_add_button, Calculator::Operation::MemAdd);
-
-    m_mem_save_button = *find_descendant_of_type_named<GUI::Button>("mem_save_button");
-    add_operation_button(*m_mem_save_button, Calculator::Operation::MemSave);
-
-    m_mem_recall_button = *find_descendant_of_type_named<GUI::Button>("mem_recall_button");
-    add_operation_button(*m_mem_recall_button, Calculator::Operation::MemRecall);
-
-    m_mem_clear_button = *find_descendant_of_type_named<GUI::Button>("mem_clear_button");
-    add_operation_button(*m_mem_clear_button, Calculator::Operation::MemClear);
-
-    m_clear_button = *find_descendant_of_type_named<GUI::Button>("clear_button");
-    m_clear_button->on_click = [this](auto) {
-        m_keypad.set_value(0.0);
-        m_calculator.clear_operation();
-        update_display();
-    };
-
-    m_clear_error_button = *find_descendant_of_type_named<GUI::Button>("clear_error_button");
-    m_clear_error_button->on_click = [this](auto) {
-        m_keypad.set_value(0.0);
-        update_display();
-    };
-
-    m_backspace_button = *find_descendant_of_type_named<GUI::Button>("backspace_button");
-    m_backspace_button->on_click = [this](auto) {
-        m_keypad.type_backspace();
-        update_display();
-    };
-
-    m_decimal_point_button = *find_descendant_of_type_named<GUI::Button>("decimal_button");
-    m_decimal_point_button->on_click = [this](auto) {
-        m_keypad.type_decimal_point();
-        update_display();
-    };
-
-    m_sign_button = *find_descendant_of_type_named<GUI::Button>("sign_button");
-    add_operation_button(*m_sign_button, Calculator::Operation::ToggleSign);
-
-    m_add_button = *find_descendant_of_type_named<GUI::Button>("add_button");
-    add_operation_button(*m_add_button, Calculator::Operation::Add);
-
-    m_subtract_button = *find_descendant_of_type_named<GUI::Button>("subtract_button");
-    add_operation_button(*m_subtract_button, Calculator::Operation::Subtract);
-
-    m_multiply_button = *find_descendant_of_type_named<GUI::Button>("multiply_button");
-    add_operation_button(*m_multiply_button, Calculator::Operation::Multiply);
-
-    m_divide_button = *find_descendant_of_type_named<GUI::Button>("divide_button");
-    add_operation_button(*m_divide_button, Calculator::Operation::Divide);
-
-    m_sqrt_button = *find_descendant_of_type_named<GUI::Button>("sqrt_button");
-    add_operation_button(*m_sqrt_button, Calculator::Operation::Sqrt);
-
-    m_inverse_button = *find_descendant_of_type_named<GUI::Button>("inverse_button");
-    add_operation_button(*m_inverse_button, Calculator::Operation::Inverse);
-
-    m_percent_button = *find_descendant_of_type_named<GUI::Button>("mod_button");
-    add_operation_button(*m_percent_button, Calculator::Operation::Percent);
-
-    m_equals_button = *find_descendant_of_type_named<GUI::Button>("equal_button");
-    m_equals_button->on_click = [this](auto) {
-        double argument = m_keypad.value();
-        double res = m_calculator.finish_operation(argument);
-        m_keypad.set_value(res);
-        update_display();
-    };
-}
-
-CalculatorWidget::~CalculatorWidget()
-{
-}
-
-void CalculatorWidget::add_operation_button(GUI::Button& button, Calculator::Operation operation)
-{
-    button.on_click = [this, operation](auto) {
-        double argument = m_keypad.value();
-        double res = m_calculator.begin_operation(operation, argument);
-        m_keypad.set_value(res);
-        update_display();
-    };
-}
-
-void CalculatorWidget::add_digit_button(GUI::Button& button, int digit)
-{
-    button.on_click = [this, digit](auto) {
-        m_keypad.type_digit(digit);
-        update_display();
-    };
-}
-
-void CalculatorWidget::update_display()
-{
-    m_entry->set_text(m_keypad.to_string());
-    if (m_calculator.has_error())
-        m_label->set_text("E");
-    else
-        m_label->set_text("");
-}
-
-void CalculatorWidget::keydown_event(GUI::KeyEvent& event)
-{
-    //Clear button selection when we are typing
-    m_equals_button->set_focus(true);
-    m_equals_button->set_focus(false);
-
-    if (event.key() == KeyCode::Key_Return) {
-        m_keypad.set_value(m_calculator.finish_operation(m_keypad.value()));
-
-    } else if (event.key() >= KeyCode::Key_0 && event.key() <= KeyCode::Key_9) {
-        m_keypad.type_digit(atoi(event.text().characters()));
-
-    } else if (event.key() == KeyCode::Key_Period) {
-        m_keypad.type_decimal_point();
-
-    } else if (event.key() == KeyCode::Key_Escape) {
-        m_keypad.set_value(0.0);
-        m_calculator.clear_operation();
-
-    } else if (event.key() == KeyCode::Key_Backspace) {
-        m_keypad.type_backspace();
-
-    } else {
-        Calculator::Operation operation;
-
-        switch (event.key()) {
-        case KeyCode::Key_Plus:
-            operation = Calculator::Operation::Add;
-            break;
-        case KeyCode::Key_Minus:
-            operation = Calculator::Operation::Subtract;
-            break;
-        case KeyCode::Key_Asterisk:
-            operation = Calculator::Operation::Multiply;
-            break;
-        case KeyCode::Key_Slash:
-            operation = Calculator::Operation::Divide;
-            break;
-        case KeyCode::Key_Percent:
-            operation = Calculator::Operation::Percent;
-            break;
-        default:
-            return;
-        }
-
-        m_keypad.set_value(m_calculator.begin_operation(operation, m_keypad.value()));
-    }
-
-    update_display();
-}
diff --git a/Applications/Calculator/CalculatorWidget.h b/Applications/Calculator/CalculatorWidget.h
deleted file mode 100644
index 31d9548b3c..0000000000
--- a/Applications/Calculator/CalculatorWidget.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * Copyright (c) 2021 Glenford Williams <gw_dev@outlook.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Calculator.h"
-#include "Keypad.h"
-#include <AK/Vector.h>
-#include <LibGUI/Widget.h>
-
-class CalculatorWidget final : public GUI::Widget {
-    C_OBJECT(CalculatorWidget)
-public:
-    virtual ~CalculatorWidget() override;
-
-private:
-    CalculatorWidget();
-    void add_operation_button(GUI::Button&, Calculator::Operation);
-    void add_digit_button(GUI::Button&, int digit);
-
-    void update_display();
-
-    virtual void keydown_event(GUI::KeyEvent&) override;
-
-    Calculator m_calculator;
-    Keypad m_keypad;
-
-    RefPtr<GUI::TextBox> m_entry;
-    RefPtr<GUI::Label> m_label;
-
-    RefPtr<GUI::Button> m_digit_button[10];
-    RefPtr<GUI::Button> m_mem_add_button;
-    RefPtr<GUI::Button> m_mem_save_button;
-    RefPtr<GUI::Button> m_mem_recall_button;
-    RefPtr<GUI::Button> m_mem_clear_button;
-    RefPtr<GUI::Button> m_clear_button;
-    RefPtr<GUI::Button> m_clear_error_button;
-    RefPtr<GUI::Button> m_backspace_button;
-    RefPtr<GUI::Button> m_decimal_point_button;
-    RefPtr<GUI::Button> m_sign_button;
-    RefPtr<GUI::Button> m_add_button;
-    RefPtr<GUI::Button> m_subtract_button;
-    RefPtr<GUI::Button> m_multiply_button;
-    RefPtr<GUI::Button> m_divide_button;
-    RefPtr<GUI::Button> m_sqrt_button;
-    RefPtr<GUI::Button> m_inverse_button;
-    RefPtr<GUI::Button> m_percent_button;
-    RefPtr<GUI::Button> m_equals_button;
-};
diff --git a/Applications/Calculator/CalculatorWindow.gml b/Applications/Calculator/CalculatorWindow.gml
deleted file mode 100644
index 4763a4d8c2..0000000000
--- a/Applications/Calculator/CalculatorWindow.gml
+++ /dev/null
@@ -1,272 +0,0 @@
-@GUI::Widget {
-    fixed_width: 254
-    fixed_height: 213
-    fill_with_background_color: true
-
-    layout: @GUI::VerticalBoxLayout {
-        margins: [10, 0, 10, 0]
-    }
-
-    @GUI::TextBox {
-        name: "entry_textbox"
-    }
-
-    @GUI::Widget {
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            name: "label"
-            fixed_width: 35
-            fixed_height: 27
-        }
-
-        @GUI::Widget {
-            fixed_width: 5
-        }
-
-        @GUI::Button {
-            name: "backspace_button"
-            text: "Backspace"
-            fixed_width: 65
-            fixed_height: 28
-            foreground_color: "brown"
-        }
-
-        @GUI::Button {
-            name: "clear_error_button"
-            text: "CE"
-            fixed_width: 55
-            fixed_height: 28
-            foreground_color: "brown"
-        }
-
-        @GUI::Button {
-            name: "clear_button"
-            text: "C"
-            fixed_width: 60
-            fixed_height: 28
-            foreground_color: "brown"
-        }
-    }
-
-    @GUI::Widget {
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Button {
-            name: "mem_clear_button"
-            text: "MC"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "red"
-        }
-
-        @GUI::Widget {
-            fixed_width: 5
-        }
-
-        @GUI::Button {
-            name: "7_button"
-            text: "7"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "8_button"
-            text: "8"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "9_button"
-            text: "9"
-            fixed_width: 35
-            fixed_height: 28
-        }
-
-        @GUI::Button {
-            name: "divide_button"
-            text: "/"
-            fixed_width: 35
-            fixed_height: 28
-        }
-
-        @GUI::Button {
-            name: "sqrt_button"
-            text: "sqrt"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-    }
-
-    @GUI::Widget {
-        layout: @GUI::HorizontalBoxLayout {}
-
-        @GUI::Button {
-            name: "mem_recall_button"
-            text: "MR"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "red"
-        }
-
-        @GUI::Widget {
-            fixed_width: 5
-        }
-
-        @GUI::Button {
-            name: "4_button"
-            text: "4"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "5_button"
-            text: "5"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "6_button"
-            text: "6"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "multiply_button"
-            text: "*"
-            fixed_width: 35
-            fixed_height: 28
-        }
-
-        @GUI::Button {
-            name: "mod_button"
-            text: "%"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-    }
-
-    @GUI::Widget {
-        layout: @GUI::HorizontalBoxLayout {}
-
-        @GUI::Button {
-            name: "mem_save_button"
-            text: "MS"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "red"
-        }
-
-        @GUI::Widget {
-            fixed_width: 5
-        }
-
-        @GUI::Button {
-            name: "1_button"
-            text: "1"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "2_button"
-            text: "2"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "3_button"
-            text: "3"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "subtract_button"
-            text: "-"
-            fixed_width: 35
-            fixed_height: 28
-        }
-
-        @GUI::Button {
-            name: "inverse_button"
-            text: "1/x"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-    }
-
-    @GUI::Widget {
-        layout: @GUI::HorizontalBoxLayout {}
-
-        @GUI::Button {
-            name: "mem_add_button"
-            text: "M+"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "red"
-        }
-
-        @GUI::Widget {
-            fixed_width: 5
-        }
-
-        @GUI::Button {
-            name: "0_button"
-            text: "0"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "sign_button"
-            text: "+/-"
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "decimal_button"
-            text: "."
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "blue"
-        }
-
-        @GUI::Button {
-            name: "add_button"
-            text: "+"
-            fixed_width: 35
-            fixed_height: 28
-        }
-
-        @GUI::Button {
-            name: "equal_button"
-            text: "="
-            fixed_width: 35
-            fixed_height: 28
-            foreground_color: "red"
-        }
-    }
-}
diff --git a/Applications/Calculator/Keypad.cpp b/Applications/Calculator/Keypad.cpp
deleted file mode 100644
index 9b2d672af5..0000000000
--- a/Applications/Calculator/Keypad.cpp
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Keypad.h"
-#include <AK/StringBuilder.h>
-#include <math.h>
-
-Keypad::Keypad()
-{
-}
-
-Keypad::~Keypad()
-{
-}
-
-void Keypad::type_digit(int digit)
-{
-    switch (m_state) {
-    case State::External:
-        m_state = State::TypingInteger;
-        m_negative = false;
-        m_int_value = digit;
-        m_frac_value = 0;
-        m_frac_length = 0;
-        break;
-    case State::TypingInteger:
-        ASSERT(m_frac_value == 0);
-        ASSERT(m_frac_length == 0);
-        m_int_value *= 10;
-        m_int_value += digit;
-        break;
-    case State::TypingDecimal:
-        if (m_frac_length > 6)
-            break;
-        m_frac_value *= 10;
-        m_frac_value += digit;
-        m_frac_length++;
-        break;
-    }
-}
-
-void Keypad::type_decimal_point()
-{
-    switch (m_state) {
-    case State::External:
-        m_negative = false;
-        m_int_value = 0;
-        m_frac_value = 0;
-        m_frac_length = 0;
-        break;
-    case State::TypingInteger:
-        ASSERT(m_frac_value == 0);
-        ASSERT(m_frac_length == 0);
-        m_state = State::TypingDecimal;
-        break;
-    case State::TypingDecimal:
-        // Ignore it.
-        break;
-    }
-}
-
-void Keypad::type_backspace()
-{
-    switch (m_state) {
-    case State::External:
-        m_negative = false;
-        m_int_value = 0;
-        m_frac_value = 0;
-        m_frac_length = 0;
-        break;
-    case State::TypingDecimal:
-        if (m_frac_length > 0) {
-            m_frac_value /= 10;
-            m_frac_length--;
-            break;
-        }
-        ASSERT(m_frac_value == 0);
-        m_state = State::TypingInteger;
-        [[fallthrough]];
-    case State::TypingInteger:
-        ASSERT(m_frac_value == 0);
-        ASSERT(m_frac_length == 0);
-        m_int_value /= 10;
-        if (m_int_value == 0)
-            m_negative = false;
-        break;
-    }
-}
-
-double Keypad::value() const
-{
-    double res = 0.0;
-
-    long frac = m_frac_value;
-    for (int i = 0; i < m_frac_length; i++) {
-        int digit = frac % 10;
-        res += digit;
-        res /= 10.0;
-        frac /= 10;
-    }
-
-    res += m_int_value;
-    if (m_negative)
-        res = -res;
-
-    return res;
-}
-
-void Keypad::set_value(double value)
-{
-    m_state = State::External;
-
-    if (value < 0.0) {
-        m_negative = true;
-        value = -value;
-    } else
-        m_negative = false;
-
-    m_int_value = value;
-    value -= m_int_value;
-
-    m_frac_value = 0;
-    m_frac_length = 0;
-    while (value != 0) {
-        value *= 10.0;
-        int digit = value;
-        m_frac_value *= 10;
-        m_frac_value += digit;
-        m_frac_length++;
-        value -= digit;
-
-        if (m_frac_length > 6)
-            break;
-    }
-}
-
-String Keypad::to_string() const
-{
-    StringBuilder builder;
-    if (m_negative)
-        builder.append("-");
-    builder.appendff("{}", m_int_value);
-
-    if (m_frac_length > 0)
-        builder.appendff(".{:0{}}", m_frac_value, m_frac_length);
-
-    return builder.to_string();
-}
diff --git a/Applications/Calculator/Keypad.h b/Applications/Calculator/Keypad.h
deleted file mode 100644
index dae427a046..0000000000
--- a/Applications/Calculator/Keypad.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/String.h>
-
-// This type implements number typing and
-// displaying mechanics. It does not perform
-// any arithmetic operations or anything on
-// the values it deals with.
-
-class Keypad final {
-public:
-    Keypad();
-    ~Keypad();
-
-    void type_digit(int digit);
-    void type_decimal_point();
-    void type_backspace();
-
-    double value() const;
-    void set_value(double);
-
-    String to_string() const;
-
-private:
-    // Internal representation of the current decimal value.
-    bool m_negative { false };
-    long m_int_value { 0 };
-    long m_frac_value { 0 };
-    int m_frac_length { 0 };
-    // E.g. for -35.004200,
-    // m_negative = true
-    // m_int_value = 35
-    // m_frac_value = 4200
-    // m_frac_length = 6
-
-    enum class State {
-        External,
-        TypingInteger,
-        TypingDecimal
-    };
-
-    State m_state { State::External };
-};
diff --git a/Applications/Calculator/main.cpp b/Applications/Calculator/main.cpp
deleted file mode 100644
index 7ff18b94bf..0000000000
--- a/Applications/Calculator/main.cpp
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "CalculatorWidget.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <stdio.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio shared_buffer rpath accept unix cpath fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio shared_buffer rpath accept", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    unveil(nullptr, nullptr);
-
-    auto app_icon = GUI::Icon::default_icon("app-calculator");
-
-    auto window = GUI::Window::construct();
-    window->set_title("Calculator");
-    window->set_resizable(false);
-    window->resize(254, 213);
-
-    window->set_main_widget<CalculatorWidget>();
-
-    window->show();
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    auto menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = menubar->add_menu("Calculator");
-    app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
-        GUI::Application::the()->quit();
-        return;
-    }));
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Calculator", app_icon));
-
-    app->set_menubar(move(menubar));
-
-    return app->exec();
-}
diff --git a/Applications/Calendar/AddEventDialog.cpp b/Applications/Calendar/AddEventDialog.cpp
deleted file mode 100644
index dbb70d33c1..0000000000
--- a/Applications/Calendar/AddEventDialog.cpp
+++ /dev/null
@@ -1,154 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Ryan Grieb <ryan.m.grieb@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "AddEventDialog.h"
-#include <LibCore/DateTime.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/ComboBox.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Layout.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/SpinBox.h>
-#include <LibGUI/TextBox.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Color.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/FontDatabase.h>
-
-static const char* short_month_names[] = {
-    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
-    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
-};
-
-AddEventDialog::AddEventDialog(Core::DateTime date_time, Window* parent_window)
-    : Dialog(parent_window)
-    , m_date_time(date_time)
-{
-    resize(158, 100);
-    set_title("Add Event");
-    set_resizable(false);
-    set_icon(parent_window->icon());
-
-    auto& widget = set_main_widget<GUI::Widget>();
-    widget.set_fill_with_background_color(true);
-    widget.set_layout<GUI::VerticalBoxLayout>();
-
-    auto& top_container = widget.add<GUI::Widget>();
-    top_container.set_layout<GUI::VerticalBoxLayout>();
-    top_container.set_fixed_height(45);
-    top_container.layout()->set_margins({ 4, 4, 4, 4 });
-
-    auto& add_label = top_container.add<GUI::Label>("Add title & date:");
-    add_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    add_label.set_fixed_height(14);
-    add_label.set_font(Gfx::FontDatabase::default_bold_font());
-
-    auto& event_title_textbox = top_container.add<GUI::TextBox>();
-    event_title_textbox.set_fixed_height(20);
-
-    auto& middle_container = widget.add<GUI::Widget>();
-    middle_container.set_layout<GUI::HorizontalBoxLayout>();
-    middle_container.set_fixed_height(25);
-    middle_container.layout()->set_margins({ 4, 4, 4, 4 });
-
-    auto& starting_month_combo = middle_container.add<GUI::ComboBox>();
-    starting_month_combo.set_only_allow_values_from_model(true);
-    starting_month_combo.set_fixed_size(50, 20);
-    starting_month_combo.set_model(MonthListModel::create());
-    starting_month_combo.set_selected_index(m_date_time.month() - 1);
-
-    auto& starting_day_combo = middle_container.add<GUI::SpinBox>();
-    starting_day_combo.set_fixed_size(40, 20);
-    starting_day_combo.set_value(m_date_time.day());
-    starting_day_combo.set_min(1);
-
-    auto& starting_year_combo = middle_container.add<GUI::SpinBox>();
-    starting_year_combo.set_fixed_size(55, 20);
-    starting_year_combo.set_range(0, 9999);
-    starting_year_combo.set_value(m_date_time.year());
-
-    widget.layout()->add_spacer();
-
-    auto& button_container = widget.add<GUI::Widget>();
-    button_container.set_fixed_height(20);
-    button_container.set_layout<GUI::HorizontalBoxLayout>();
-    button_container.layout()->add_spacer();
-    auto& ok_button = button_container.add<GUI::Button>("OK");
-    ok_button.set_fixed_size(80, 20);
-    ok_button.on_click = [this](auto) {
-        dbgln("TODO: Add event icon on specific tile");
-        done(Dialog::ExecOK);
-    };
-
-    event_title_textbox.set_focus(true);
-}
-
-AddEventDialog::~AddEventDialog()
-{
-}
-
-AddEventDialog::MonthListModel::MonthListModel()
-{
-}
-
-AddEventDialog::MonthListModel::~MonthListModel()
-{
-}
-
-void AddEventDialog::MonthListModel::update()
-{
-}
-
-int AddEventDialog::MonthListModel::row_count(const GUI::ModelIndex&) const
-{
-    return 12;
-}
-
-String AddEventDialog::MonthListModel::column_name(int column) const
-{
-    switch (column) {
-    case Column::Month:
-        return "Month";
-    default:
-        ASSERT_NOT_REACHED();
-    }
-}
-
-GUI::Variant AddEventDialog::MonthListModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
-{
-    auto& month = short_month_names[index.row()];
-    if (role == GUI::ModelRole::Display) {
-        switch (index.column()) {
-        case Column::Month:
-            return month;
-        default:
-            ASSERT_NOT_REACHED();
-        }
-    }
-    return {};
-}
diff --git a/Applications/Calendar/AddEventDialog.h b/Applications/Calendar/AddEventDialog.h
deleted file mode 100644
index c84e494527..0000000000
--- a/Applications/Calendar/AddEventDialog.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Ryan Grieb <ryan.m.grieb@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Calendar.h>
-#include <LibGUI/Dialog.h>
-#include <LibGUI/Model.h>
-#include <LibGUI/Window.h>
-
-class AddEventDialog final : public GUI::Dialog {
-    C_OBJECT(AddEventDialog)
-public:
-    virtual ~AddEventDialog() override;
-
-    static void show(Core::DateTime date_time, Window* parent_window = nullptr)
-    {
-        auto dialog = AddEventDialog::construct(date_time, parent_window);
-        dialog->exec();
-    }
-
-private:
-    AddEventDialog(Core::DateTime date_time, Window* parent_window = nullptr);
-
-    class MonthListModel final : public GUI::Model {
-    public:
-        enum Column {
-            Month,
-            __Count,
-        };
-
-        static NonnullRefPtr<MonthListModel> create() { return adopt(*new MonthListModel); }
-        virtual ~MonthListModel() override;
-
-        virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
-        virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return Column::__Count; }
-        virtual String column_name(int) const override;
-        virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
-        virtual void update() override;
-
-    private:
-        MonthListModel();
-    };
-
-    Core::DateTime m_date_time;
-};
diff --git a/Applications/Calendar/CMakeLists.txt b/Applications/Calendar/CMakeLists.txt
deleted file mode 100644
index c23a6743cc..0000000000
--- a/Applications/Calendar/CMakeLists.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-set(SOURCES
-    AddEventDialog.cpp
-    main.cpp
-)
-
-serenity_app(Calendar ICON app-calendar)
-target_link_libraries(Calendar LibGUI)
diff --git a/Applications/Calendar/main.cpp b/Applications/Calendar/main.cpp
deleted file mode 100644
index aebc5c4fed..0000000000
--- a/Applications/Calendar/main.cpp
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Ryan Grieb <ryan.m.grieb@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "AddEventDialog.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/Calendar.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/ToolBar.h>
-#include <LibGUI/ToolBarContainer.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/Color.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/FontDatabase.h>
-#include <stdio.h>
-
-int main(int argc, char** argv)
-{
-
-    if (pledge("stdio shared_buffer rpath accept unix cpath fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio shared_buffer rpath accept", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    unveil(nullptr, nullptr);
-
-    auto app_icon = GUI::Icon::default_icon("app-calendar");
-    auto window = GUI::Window::construct();
-    window->set_title("Calendar");
-    window->resize(600, 480);
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    auto& root_container = window->set_main_widget<GUI::Widget>();
-    root_container.set_fill_with_background_color(true);
-    root_container.set_layout<GUI::VerticalBoxLayout>();
-
-    auto& toolbar_container = root_container.add<GUI::ToolBarContainer>();
-    auto& toolbar = toolbar_container.add<GUI::ToolBar>();
-
-    auto& calendar_container = root_container.add<GUI::Frame>();
-    calendar_container.set_layout<GUI::VerticalBoxLayout>();
-    calendar_container.layout()->set_margins({ 2, 2, 2, 2 });
-    auto& calendar_widget = calendar_container.add<GUI::Calendar>(Core::DateTime::now());
-
-    RefPtr<GUI::Button> selected_calendar_button;
-
-    auto prev_date_action = GUI::Action::create("Previous date", { Mod_Alt, Key_Left }, Gfx::Bitmap::load_from_file("/res/icons/16x16/go-back.png"), [&](const GUI::Action&) {
-        unsigned int target_month = calendar_widget.selected_month();
-        unsigned int target_year = calendar_widget.selected_year();
-
-        if (calendar_widget.mode() == GUI::Calendar::Month) {
-            target_month--;
-            if (calendar_widget.selected_month() <= 1) {
-                target_month = 12;
-                target_year--;
-            }
-        } else {
-            target_year--;
-        }
-
-        calendar_widget.update_tiles(target_year, target_month);
-        selected_calendar_button->set_text(calendar_widget.selected_calendar_text());
-    });
-
-    auto next_date_action = GUI::Action::create("Next date", { Mod_Alt, Key_Right }, Gfx::Bitmap::load_from_file("/res/icons/16x16/go-forward.png"), [&](const GUI::Action&) {
-        unsigned int target_month = calendar_widget.selected_month();
-        unsigned int target_year = calendar_widget.selected_year();
-
-        if (calendar_widget.mode() == GUI::Calendar::Month) {
-            target_month++;
-            if (calendar_widget.selected_month() >= 12) {
-                target_month = 1;
-                target_year++;
-            }
-        } else {
-            target_year++;
-        }
-
-        calendar_widget.update_tiles(target_year, target_month);
-        selected_calendar_button->set_text(calendar_widget.selected_calendar_text());
-    });
-
-    auto add_event_action = GUI::Action::create("Add event", {}, Gfx::Bitmap::load_from_file("/res/icons/16x16/add-event.png"), [&](const GUI::Action&) {
-        AddEventDialog::show(calendar_widget.selected_date(), window);
-    });
-
-    auto jump_to_action = GUI::Action::create("Jump to today", {}, Gfx::Bitmap::load_from_file("/res/icons/16x16/calendar-date.png"), [&](const GUI::Action&) {
-        if (calendar_widget.mode() == GUI::Calendar::Year)
-            calendar_widget.toggle_mode();
-        calendar_widget.set_selected_date(Core::DateTime::now());
-        calendar_widget.update_tiles(Core::DateTime::now().year(), Core::DateTime::now().month());
-        selected_calendar_button->set_text(calendar_widget.selected_calendar_text());
-    });
-
-    toolbar.add_action(prev_date_action);
-    selected_calendar_button = toolbar.add<GUI::Button>(calendar_widget.selected_calendar_text());
-    selected_calendar_button->set_fixed_width(70);
-    selected_calendar_button->set_button_style(Gfx::ButtonStyle::CoolBar);
-    selected_calendar_button->set_font(Gfx::FontDatabase::default_bold_fixed_width_font());
-    selected_calendar_button->on_click = [&](auto) {
-        calendar_widget.toggle_mode();
-        selected_calendar_button->set_text(calendar_widget.selected_calendar_text());
-    };
-    toolbar.add_action(next_date_action);
-    toolbar.add_separator();
-    toolbar.add_action(jump_to_action);
-    toolbar.add_action(add_event_action);
-
-    calendar_widget.on_calendar_tile_click = [&] {
-        selected_calendar_button->set_text(calendar_widget.selected_calendar_text());
-    };
-
-    calendar_widget.on_calendar_tile_doubleclick = [&] {
-        AddEventDialog::show(calendar_widget.selected_date(), window);
-    };
-
-    calendar_widget.on_month_tile_click = [&] {
-        selected_calendar_button->set_text(calendar_widget.selected_calendar_text());
-    };
-
-    auto menubar = GUI::MenuBar::construct();
-    auto& app_menu = menubar->add_menu("Calendar");
-    app_menu.add_action(GUI::Action::create("Add Event", { Mod_Ctrl | Mod_Shift, Key_E }, Gfx::Bitmap::load_from_file("/res/icons/16x16/add-event.png"),
-        [&](const GUI::Action&) {
-            AddEventDialog::show(calendar_widget.selected_date(), window);
-            return;
-        }));
-
-    app_menu.add_separator();
-
-    app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
-        GUI::Application::the()->quit();
-        return;
-    }));
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Calendar", app_icon));
-
-    app->set_menubar(move(menubar));
-    window->show();
-    app->exec();
-}
diff --git a/Applications/CrashReporter/CMakeLists.txt b/Applications/CrashReporter/CMakeLists.txt
deleted file mode 100644
index d391aa6b84..0000000000
--- a/Applications/CrashReporter/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-compile_gml(CrashReporterWindow.gml CrashReporterWindowGML.h crash_reporter_window_gml)
-
-
-set(SOURCES
-    main.cpp
-    CrashReporterWindowGML.h
-)
-
-serenity_app(CrashReporter ICON app-crash-reporter)
-target_link_libraries(CrashReporter LibCore LibCoreDump LibDesktop LibGUI)
diff --git a/Applications/CrashReporter/CrashReporterWindow.gml b/Applications/CrashReporter/CrashReporterWindow.gml
deleted file mode 100644
index acca32bd13..0000000000
--- a/Applications/CrashReporter/CrashReporterWindow.gml
+++ /dev/null
@@ -1,95 +0,0 @@
-@GUI::Widget {
-    fill_with_background_color: true
-
-    layout: @GUI::VerticalBoxLayout {
-        margins: [5, 5, 5, 5]
-    }
-
-    @GUI::Widget {
-        fixed_height: 44
-
-        layout: @GUI::HorizontalBoxLayout {
-            spacing: 10
-        }
-
-        @GUI::ImageWidget {
-            name: "icon"
-        }
-
-        @GUI::Label {
-            name: "description"
-            text_alignment: "CenterLeft"
-        }
-    }
-
-    @GUI::Widget {
-        fixed_height: 18
-
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            text: "Executable path:"
-            text_alignment: "CenterLeft"
-            fixed_width: 90
-        }
-
-        @GUI::LinkLabel {
-            name: "executable_link"
-            text_alignment: "CenterLeft"
-        }
-    }
-
-    @GUI::Widget {
-        fixed_height: 18
-
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            text: "Coredump path:"
-            text_alignment: "CenterLeft"
-            fixed_width: 90
-        }
-
-        @GUI::LinkLabel {
-            name: "coredump_link"
-            text_alignment: "CenterLeft"
-        }
-    }
-
-    @GUI::Widget {
-        fixed_height: 18
-
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            text: "Backtrace:"
-            text_alignment: "CenterLeft"
-        }
-    }
-
-    @GUI::TextEditor {
-        name: "backtrace_text_editor"
-        mode: "ReadOnly"
-    }
-
-    @GUI::Widget {
-        fixed_height: 32
-
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        // HACK: We need something like Layout::add_spacer() in GML! :^)
-        @GUI::Widget {
-        }
-
-        @GUI::Button {
-            name: "close_button"
-            text: "Close"
-            fixed_width: 70
-            fixed_height: 22
-        }
-    }
-}
diff --git a/Applications/CrashReporter/main.cpp b/Applications/CrashReporter/main.cpp
deleted file mode 100644
index 047a696ea3..0000000000
--- a/Applications/CrashReporter/main.cpp
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- * Copyright (c) 2020, Linus Groh <mail@linusgroh.de>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/LexicalPath.h>
-#include <AK/StringBuilder.h>
-#include <AK/Types.h>
-#include <AK/URL.h>
-#include <Applications/CrashReporter/CrashReporterWindowGML.h>
-#include <LibCore/ArgsParser.h>
-#include <LibCoreDump/Backtrace.h>
-#include <LibCoreDump/Reader.h>
-#include <LibDesktop/AppFile.h>
-#include <LibDesktop/Launcher.h>
-#include <LibELF/CoreDump.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/FileIconProvider.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/ImageWidget.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Layout.h>
-#include <LibGUI/LinkLabel.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGUI/Window.h>
-#include <string.h>
-
-static String build_backtrace(const CoreDump::Reader& coredump)
-{
-    StringBuilder builder;
-
-    auto assertion = coredump.metadata().get("assertion");
-    if (assertion.has_value() && !assertion.value().is_empty()) {
-        builder.append("ASSERTION FAILED: ");
-        builder.append(assertion.value().characters());
-        builder.append('\n');
-        builder.append('\n');
-    }
-
-    auto first = true;
-    for (auto& entry : coredump.backtrace().entries()) {
-        if (first)
-            first = false;
-        else
-            builder.append('\n');
-        builder.append(entry.to_string());
-    }
-
-    return builder.build();
-}
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio shared_buffer accept cpath rpath unix fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    const char* coredump_path = nullptr;
-
-    Core::ArgsParser args_parser;
-    args_parser.set_general_help("Show information from an application crash coredump.");
-    args_parser.add_positional_argument(coredump_path, "Coredump path", "coredump-path");
-    args_parser.parse(argc, argv);
-
-    String backtrace;
-    String executable_path;
-    int pid { 0 };
-    u8 termination_signal { 0 };
-
-    {
-        auto coredump = CoreDump::Reader::create(coredump_path);
-        if (!coredump) {
-            warnln("Could not open coredump '{}'", coredump_path);
-            return 1;
-        }
-        auto& process_info = coredump->process_info();
-        backtrace = build_backtrace(*coredump);
-        executable_path = String(process_info.executable_path);
-        pid = process_info.pid;
-        termination_signal = process_info.termination_signal;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio shared_buffer accept rpath unix", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil(executable_path.characters(), "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/tmp/portal/launch", "rw") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil(nullptr, nullptr) < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-crash-reporter");
-
-    auto window = GUI::Window::construct();
-    window->set_title("Crash Reporter");
-    window->set_icon(app_icon.bitmap_for_size(16));
-    window->resize(460, 340);
-    window->center_on_screen();
-
-    auto& widget = window->set_main_widget<GUI::Widget>();
-    widget.load_from_gml(crash_reporter_window_gml);
-
-    auto& icon_image_widget = *widget.find_descendant_of_type_named<GUI::ImageWidget>("icon");
-    icon_image_widget.set_bitmap(GUI::FileIconProvider::icon_for_executable(executable_path).bitmap_for_size(32));
-
-    auto app_name = LexicalPath(executable_path).basename();
-    auto af = Desktop::AppFile::get_for_app(app_name);
-    if (af->is_valid())
-        app_name = af->name();
-
-    auto& description_label = *widget.find_descendant_of_type_named<GUI::Label>("description");
-    description_label.set_text(String::formatted("\"{}\" (PID {}) has crashed - {} (signal {})", app_name, pid, strsignal(termination_signal), termination_signal));
-
-    auto& executable_link_label = *widget.find_descendant_of_type_named<GUI::LinkLabel>("executable_link");
-    executable_link_label.set_text(LexicalPath::canonicalized_path(executable_path));
-    executable_link_label.on_click = [&] {
-        Desktop::Launcher::open(URL::create_with_file_protocol(LexicalPath(executable_path).dirname()));
-    };
-
-    auto& coredump_link_label = *widget.find_descendant_of_type_named<GUI::LinkLabel>("coredump_link");
-    coredump_link_label.set_text(LexicalPath::canonicalized_path(coredump_path));
-    coredump_link_label.on_click = [&] {
-        Desktop::Launcher::open(URL::create_with_file_protocol(LexicalPath(coredump_path).dirname()));
-    };
-
-    auto& backtrace_text_editor = *widget.find_descendant_of_type_named<GUI::TextEditor>("backtrace_text_editor");
-    backtrace_text_editor.set_text(backtrace);
-    backtrace_text_editor.set_should_hide_unnecessary_scrollbars(true);
-
-    auto& close_button = *widget.find_descendant_of_type_named<GUI::Button>("close_button");
-    close_button.on_click = [&](auto) {
-        app->quit();
-    };
-
-    window->show();
-
-    return app->exec();
-}
diff --git a/Applications/Debugger/CMakeLists.txt b/Applications/Debugger/CMakeLists.txt
deleted file mode 100644
index 7e6f200ea4..0000000000
--- a/Applications/Debugger/CMakeLists.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-set(SOURCES
-    main.cpp
-)
-
-serenity_bin(Debugger)
-target_link_libraries(Debugger LibCore LibDebug LibX86 LibLine)
diff --git a/Applications/Debugger/main.cpp b/Applications/Debugger/main.cpp
deleted file mode 100644
index ef5bbe9671..0000000000
--- a/Applications/Debugger/main.cpp
+++ /dev/null
@@ -1,313 +0,0 @@
-/*
- * Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/Assertions.h>
-#include <AK/ByteBuffer.h>
-#include <AK/Demangle.h>
-#include <AK/LogStream.h>
-#include <AK/StringBuilder.h>
-#include <AK/kmalloc.h>
-#include <LibC/sys/arch/i386/regs.h>
-#include <LibCore/ArgsParser.h>
-#include <LibCore/File.h>
-#include <LibDebug/DebugInfo.h>
-#include <LibDebug/DebugSession.h>
-#include <LibLine/Editor.h>
-#include <LibX86/Disassembler.h>
-#include <LibX86/Instruction.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-RefPtr<Line::Editor> editor;
-
-OwnPtr<Debug::DebugSession> g_debug_session;
-
-static void handle_sigint(int)
-{
-    outln("Debugger: SIGINT");
-
-    // The destructor of DebugSession takes care of detaching
-    g_debug_session = nullptr;
-}
-
-static void handle_print_registers(const PtraceRegisters& regs)
-{
-    outln("eax={:08x} ebx={:08x} ecx={:08x} edx={:08x}", regs.eax, regs.ebx, regs.ecx, regs.edx);
-    outln("esp={:08x} ebp={:08x} esi={:08x} edi={:08x}", regs.esp, regs.ebp, regs.esi, regs.edi);
-    outln("eip={:08x} eflags={:08x}", regs.eip, regs.eflags);
-}
-
-static bool handle_disassemble_command(const String& command, void* first_instruction)
-{
-    auto parts = command.split(' ');
-    size_t number_of_instructions_to_disassemble = 5;
-    if (parts.size() == 2) {
-        auto number = parts[1].to_uint();
-        if (!number.has_value())
-            return false;
-        number_of_instructions_to_disassemble = number.value();
-    }
-
-    // FIXME: Instead of using a fixed "dump_size",
-    //        we can feed instructions to the disassembler one by one
-    constexpr size_t dump_size = 0x100;
-    ByteBuffer code;
-    for (size_t i = 0; i < dump_size / sizeof(u32); ++i) {
-        auto value = g_debug_session->peek(reinterpret_cast<u32*>(first_instruction) + i);
-        if (!value.has_value())
-            break;
-        code.append(&value, sizeof(u32));
-    }
-
-    X86::SimpleInstructionStream stream(code.data(), code.size());
-    X86::Disassembler disassembler(stream);
-
-    for (size_t i = 0; i < number_of_instructions_to_disassemble; ++i) {
-        auto offset = stream.offset();
-        auto insn = disassembler.next();
-        if (!insn.has_value())
-            break;
-
-        outln("    {:p} <+{}>:\t{}", offset + reinterpret_cast<size_t>(first_instruction), offset, insn.value().to_string(offset));
-    }
-
-    return true;
-}
-
-static bool insert_breakpoint_at_address(FlatPtr address)
-{
-    return g_debug_session->insert_breakpoint((void*)address);
-}
-
-static bool insert_breakpoint_at_source_position(const String& file, size_t line)
-{
-    auto result = g_debug_session->insert_breakpoint(file, line);
-    if (!result.has_value()) {
-        warnln("Could not insert breakpoint at {}:{}", file, line);
-        return false;
-    }
-    outln("Breakpoint inserted [{}:{} ({}:{:p})]", result.value().file_name, result.value().line_number, result.value().library_name, result.value().address);
-    return true;
-}
-
-static bool insert_breakpoint_at_symbol(const String& symbol)
-{
-    auto result = g_debug_session->insert_breakpoint(symbol);
-    if (!result.has_value()) {
-        warnln("Could not insert breakpoint at symbol: {}", symbol);
-        return false;
-    }
-    outln("Breakpoint inserted [{}:{:p}]", result.value().library_name, result.value().address);
-    return true;
-}
-
-static bool handle_breakpoint_command(const String& command)
-{
-    auto parts = command.split(' ');
-    if (parts.size() != 2)
-        return false;
-
-    auto argument = parts[1];
-    if (argument.is_empty())
-        return false;
-
-    if (argument.contains(":")) {
-        auto source_arguments = argument.split(':');
-        if (source_arguments.size() != 2)
-            return false;
-        auto line = source_arguments[1].to_uint();
-        if (!line.has_value())
-            return false;
-        auto file = source_arguments[0];
-        return insert_breakpoint_at_source_position(file, line.value());
-    }
-    if ((argument.starts_with("0x"))) {
-        return insert_breakpoint_at_address(strtoul(argument.characters() + 2, nullptr, 16));
-    }
-
-    return insert_breakpoint_at_symbol(argument);
-}
-
-static bool handle_examine_command(const String& command)
-{
-    auto parts = command.split(' ');
-    if (parts.size() != 2)
-        return false;
-
-    auto argument = parts[1];
-    if (argument.is_empty())
-        return false;
-
-    if (!(argument.starts_with("0x"))) {
-        return false;
-    }
-    u32 address = strtoul(argument.characters() + 2, nullptr, 16);
-    auto res = g_debug_session->peek((u32*)address);
-    if (!res.has_value()) {
-        printf("could not examine memory at address 0x%x\n", address);
-        return true;
-    }
-    printf("0x%x\n", res.value());
-    return true;
-}
-
-static void print_help()
-{
-    out("Options:\n"
-        "cont - Continue execution\n"
-        "si - step to the next instruction\n"
-        "sl - step to the next source line\n"
-        "line - show the position of the current instruction in the source code\n"
-        "regs - Print registers\n"
-        "dis [number of instructions] - Print disassembly\n"
-        "bp <address/symbol/file:line> - Insert a breakpoint\n"
-        "x <address> - examine dword in memory\n");
-}
-
-int main(int argc, char** argv)
-{
-    editor = Line::Editor::construct();
-
-    if (pledge("stdio proc ptrace exec rpath tty sigaction cpath unix fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    const char* command = nullptr;
-    Core::ArgsParser args_parser;
-    args_parser.add_positional_argument(command,
-        "The program to be debugged, along with its arguments",
-        "program", Core::ArgsParser::Required::Yes);
-    args_parser.parse(argc, argv);
-
-    auto result = Debug::DebugSession::exec_and_attach(command);
-    if (!result) {
-        warnln("Failed to start debugging session for: \"{}\"", command);
-        exit(1);
-    }
-    g_debug_session = result.release_nonnull();
-
-    struct sigaction sa;
-    memset(&sa, 0, sizeof(struct sigaction));
-    sa.sa_handler = handle_sigint;
-    sigaction(SIGINT, &sa, nullptr);
-
-    Debug::DebugInfo::SourcePosition previous_source_position;
-    bool in_step_line = false;
-
-    g_debug_session->run(Debug::DebugSession::DesiredInitialDebugeeState::Stopped, [&](Debug::DebugSession::DebugBreakReason reason, Optional<PtraceRegisters> optional_regs) {
-        if (reason == Debug::DebugSession::DebugBreakReason::Exited) {
-            outln("Program exited.");
-            return Debug::DebugSession::DebugDecision::Detach;
-        }
-
-        ASSERT(optional_regs.has_value());
-        const PtraceRegisters& regs = optional_regs.value();
-
-        auto symbol_at_ip = g_debug_session->symbolicate(regs.eip);
-
-        auto source_position = g_debug_session->get_source_position(regs.eip);
-
-        if (in_step_line) {
-            bool no_source_info = !source_position.has_value();
-            if (no_source_info || source_position.value() != previous_source_position) {
-                if (no_source_info)
-                    outln("No source information for current instruction! stoppoing.");
-                in_step_line = false;
-            } else {
-                return Debug::DebugSession::DebugDecision::SingleStep;
-            }
-        }
-
-        if (symbol_at_ip.has_value())
-            outln("Program is stopped at: {:p} ({}:{})", regs.eip, symbol_at_ip.value().library_name, symbol_at_ip.value().symbol);
-        else
-            outln("Program is stopped at: {:p}", regs.eip);
-
-        if (source_position.has_value()) {
-            previous_source_position = source_position.value();
-            outln("Source location: {}:{}", source_position.value().file_path, source_position.value().line_number);
-        } else {
-            outln("(No source location information for the current instruction)");
-        }
-
-        for (;;) {
-            auto command_result = editor->get_line("(sdb) ");
-
-            if (command_result.is_error())
-                return Debug::DebugSession::DebugDecision::Detach;
-
-            auto& command = command_result.value();
-
-            bool success = false;
-            Optional<Debug::DebugSession::DebugDecision> decision;
-
-            if (command.is_empty() && !editor->history().is_empty()) {
-                command = editor->history().last().entry;
-            }
-            if (command == "cont") {
-                decision = Debug::DebugSession::DebugDecision::Continue;
-                success = true;
-            } else if (command == "si") {
-                decision = Debug::DebugSession::DebugDecision::SingleStep;
-                success = true;
-            } else if (command == "sl") {
-                if (source_position.has_value()) {
-                    decision = Debug::DebugSession::DebugDecision::SingleStep;
-                    in_step_line = true;
-                    success = true;
-                } else {
-                    outln("No source location information for the current instruction");
-                }
-            } else if (command == "regs") {
-                handle_print_registers(regs);
-                success = true;
-
-            } else if (command.starts_with("dis")) {
-                success = handle_disassemble_command(command, reinterpret_cast<void*>(regs.eip));
-
-            } else if (command.starts_with("bp")) {
-                success = handle_breakpoint_command(command);
-            } else if (command.starts_with("x")) {
-                success = handle_examine_command(command);
-            }
-
-            if (success && !command.is_empty()) {
-                // Don't add repeated commands to history
-                if (editor->history().is_empty() || editor->history().last().entry != command)
-                    editor->add_to_history(command);
-            }
-            if (!success) {
-                print_help();
-            }
-            if (decision.has_value())
-                return decision.value();
-        }
-    });
-}
diff --git a/Applications/DisplaySettings/CMakeLists.txt b/Applications/DisplaySettings/CMakeLists.txt
deleted file mode 100644
index b541894194..0000000000
--- a/Applications/DisplaySettings/CMakeLists.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-compile_gml(DisplaySettingsWindow.gml DisplaySettingsWindowGML.h display_settings_window_gml)
-
-set(SOURCES
-    DisplaySettings.cpp
-    DisplaySettingsWindowGML.h
-    main.cpp
-    MonitorWidget.cpp
-)
-
-serenity_app(DisplaySettings ICON app-display-settings)
-target_link_libraries(DisplaySettings LibGUI)
diff --git a/Applications/DisplaySettings/DisplaySettings.cpp b/Applications/DisplaySettings/DisplaySettings.cpp
deleted file mode 100644
index ad68ebf827..0000000000
--- a/Applications/DisplaySettings/DisplaySettings.cpp
+++ /dev/null
@@ -1,264 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Jesse Buhagiar <jooster669@gmail.com>
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "DisplaySettings.h"
-#include <AK/StringBuilder.h>
-#include <Applications/DisplaySettings/DisplaySettingsWindowGML.h>
-#include <LibCore/ConfigFile.h>
-#include <LibCore/DirIterator.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/ComboBox.h>
-#include <LibGUI/Desktop.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/ItemListModel.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/WindowServerConnection.h>
-#include <LibGfx/Palette.h>
-#include <LibGfx/SystemTheme.h>
-
-REGISTER_WIDGET(DisplaySettings, MonitorWidget)
-
-DisplaySettingsWidget::DisplaySettingsWidget()
-{
-    create_resolution_list();
-    create_wallpaper_list();
-
-    create_frame();
-
-    load_current_settings();
-}
-
-void DisplaySettingsWidget::create_resolution_list()
-{
-    // TODO: Find a better way to get the default resolution
-    m_resolutions.append({ 640, 480 });
-    m_resolutions.append({ 800, 600 });
-    m_resolutions.append({ 1024, 768 });
-    m_resolutions.append({ 1280, 720 });
-    m_resolutions.append({ 1280, 768 });
-    m_resolutions.append({ 1280, 1024 });
-    m_resolutions.append({ 1360, 768 });
-    m_resolutions.append({ 1368, 768 });
-    m_resolutions.append({ 1440, 900 });
-    m_resolutions.append({ 1600, 900 });
-    m_resolutions.append({ 1920, 1080 });
-    m_resolutions.append({ 2560, 1080 });
-}
-
-void DisplaySettingsWidget::create_wallpaper_list()
-{
-    Core::DirIterator iterator("/res/wallpapers/", Core::DirIterator::Flags::SkipDots);
-
-    m_wallpapers.append("Use background color");
-
-    while (iterator.has_next()) {
-        m_wallpapers.append(iterator.next_path());
-    }
-
-    m_modes.append("simple");
-    m_modes.append("tile");
-    m_modes.append("center");
-    m_modes.append("scaled");
-}
-
-void DisplaySettingsWidget::create_frame()
-{
-    load_from_gml(display_settings_window_gml);
-
-    m_monitor_widget = *find_descendant_of_type_named<DisplaySettings::MonitorWidget>("monitor_widget");
-
-    m_wallpaper_combo = *find_descendant_of_type_named<GUI::ComboBox>("wallpaper_combo");
-    m_wallpaper_combo->set_only_allow_values_from_model(true);
-    m_wallpaper_combo->set_model(*GUI::ItemListModel<AK::String>::create(m_wallpapers));
-    m_wallpaper_combo->on_change = [this](auto& text, const GUI::ModelIndex& index) {
-        String path = text;
-        if (path.starts_with("/") && m_monitor_widget->set_wallpaper(path)) {
-            m_monitor_widget->update();
-            return;
-        }
-
-        if (index.row() == 0) {
-            path = "";
-        } else {
-            if (index.is_valid()) {
-                StringBuilder builder;
-                builder.append("/res/wallpapers/");
-                builder.append(path);
-                path = builder.to_string();
-            }
-        }
-
-        m_monitor_widget->set_wallpaper(path);
-        m_monitor_widget->update();
-    };
-
-    auto& button = *find_descendant_of_type_named<GUI::Button>("wallpaper_open_button");
-    button.set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/open.png"));
-    button.on_click = [this](auto) {
-        Optional<String> open_path = GUI::FilePicker::get_open_filepath(nullptr, "Select wallpaper from file system.");
-
-        if (!open_path.has_value())
-            return;
-
-        m_wallpaper_combo->set_only_allow_values_from_model(false);
-        m_wallpaper_combo->set_text(open_path.value());
-        m_wallpaper_combo->set_only_allow_values_from_model(true);
-    };
-
-    m_mode_combo = *find_descendant_of_type_named<GUI::ComboBox>("mode_combo");
-    m_mode_combo->set_only_allow_values_from_model(true);
-    m_mode_combo->set_model(*GUI::ItemListModel<AK::String>::create(m_modes));
-    m_mode_combo->on_change = [this](auto&, const GUI::ModelIndex& index) {
-        m_monitor_widget->set_wallpaper_mode(m_modes.at(index.row()));
-        m_monitor_widget->update();
-    };
-
-    m_resolution_combo = *find_descendant_of_type_named<GUI::ComboBox>("resolution_combo");
-    m_resolution_combo->set_only_allow_values_from_model(true);
-    m_resolution_combo->set_model(*GUI::ItemListModel<Gfx::IntSize>::create(m_resolutions));
-    m_resolution_combo->on_change = [this](auto&, const GUI::ModelIndex& index) {
-        m_monitor_widget->set_desktop_resolution(m_resolutions.at(index.row()));
-        m_monitor_widget->update();
-    };
-
-    m_color_input = *find_descendant_of_type_named<GUI::ColorInput>("color_input");
-    m_color_input->set_color_has_alpha_channel(false);
-    m_color_input->set_color_picker_title("Select color for desktop");
-    m_color_input->on_change = [this] {
-        m_monitor_widget->set_background_color(m_color_input->color());
-        m_monitor_widget->update();
-    };
-
-    auto& ok_button = *find_descendant_of_type_named<GUI::Button>("ok_button");
-    ok_button.on_click = [this](auto) {
-        send_settings_to_window_server();
-        GUI::Application::the()->quit();
-    };
-
-    auto& cancel_button = *find_descendant_of_type_named<GUI::Button>("cancel_button");
-    cancel_button.on_click = [](auto) {
-        GUI::Application::the()->quit();
-    };
-
-    auto& apply_button = *find_descendant_of_type_named<GUI::Button>("apply_button");
-    apply_button.on_click = [this](auto) {
-        send_settings_to_window_server();
-    };
-}
-
-void DisplaySettingsWidget::load_current_settings()
-{
-    auto ws_config(Core::ConfigFile::open("/etc/WindowServer/WindowServer.ini"));
-    auto wm_config = Core::ConfigFile::get_for_app("WindowManager");
-
-    /// Wallpaper path ////////////////////////////////////////////////////////////////////////////
-    /// Read wallpaper path from config file and set value to monitor widget and combo box.
-    auto selected_wallpaper = wm_config->read_entry("Background", "Wallpaper", "");
-    if (!selected_wallpaper.is_empty()) {
-        m_monitor_widget->set_wallpaper(selected_wallpaper);
-
-        Optional<size_t> optional_index;
-        if (selected_wallpaper.starts_with("/res/wallpapers/")) {
-            auto name_parts = selected_wallpaper.split('/', true);
-            optional_index = m_wallpapers.find_first_index(name_parts[2]);
-
-            if (optional_index.has_value()) {
-                m_wallpaper_combo->set_selected_index(optional_index.value());
-            }
-        }
-
-        if (!optional_index.has_value()) {
-            m_wallpaper_combo->set_only_allow_values_from_model(false);
-            m_wallpaper_combo->set_text(selected_wallpaper);
-            m_wallpaper_combo->set_only_allow_values_from_model(true);
-        }
-    } else {
-        m_wallpaper_combo->set_selected_index(0);
-    }
-
-    size_t index;
-
-    /// Mode //////////////////////////////////////////////////////////////////////////////////////
-    auto mode = ws_config->read_entry("Background", "Mode", "simple");
-    if (!m_modes.contains_slow(mode)) {
-        warnln("Invalid background mode '{}' in WindowServer config, falling back to 'simple'", mode);
-        mode = "simple";
-    }
-    m_monitor_widget->set_wallpaper_mode(mode);
-    index = m_modes.find_first_index(mode).value();
-    m_mode_combo->set_selected_index(index);
-
-    /// Resolution ////////////////////////////////////////////////////////////////////////////////
-    Gfx::IntSize find_size;
-
-    // Let's attempt to find the current resolution and select it!
-    find_size.set_width(ws_config->read_num_entry("Screen", "Width", 1024));
-    find_size.set_height(ws_config->read_num_entry("Screen", "Height", 768));
-
-    index = m_resolutions.find_first_index(find_size).value_or(0);
-    Gfx::IntSize m_current_resolution = m_resolutions.at(index);
-    m_monitor_widget->set_desktop_resolution(m_current_resolution);
-    m_resolution_combo->set_selected_index(index);
-
-    /// Color /////////////////////////////////////////////////////////////////////////////////////
-    /// If presend read from config file. If not paint with palet color.
-    Color palette_desktop_color = palette().desktop_background();
-
-    auto background_color = ws_config->read_entry("Background", "Color", "");
-    if (!background_color.is_empty()) {
-        auto opt_color = Color::from_string(background_color);
-        if (opt_color.has_value())
-            palette_desktop_color = opt_color.value();
-    }
-
-    m_color_input->set_color(palette_desktop_color);
-    m_monitor_widget->set_background_color(palette_desktop_color);
-
-    m_monitor_widget->update();
-}
-
-void DisplaySettingsWidget::send_settings_to_window_server()
-{
-    auto result = GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::SetResolution>(m_monitor_widget->desktop_resolution());
-    if (!result->success()) {
-        GUI::MessageBox::show(nullptr, String::formatted("Reverting to resolution {}x{}", result->resolution().width(), result->resolution().height()),
-            "Unable to set resolution", GUI::MessageBox::Type::Error);
-    }
-
-    if (!m_monitor_widget->wallpaper().is_empty()) {
-        GUI::Desktop::the().set_wallpaper(m_monitor_widget->wallpaper());
-    } else {
-        dbgln("Setting color input: __{}__", m_color_input->text());
-        GUI::Desktop::the().set_wallpaper("");
-        GUI::Desktop::the().set_background_color(m_color_input->text());
-    }
-
-    GUI::Desktop::the().set_wallpaper_mode(m_monitor_widget->wallpaper_mode());
-}
diff --git a/Applications/DisplaySettings/DisplaySettings.h b/Applications/DisplaySettings/DisplaySettings.h
deleted file mode 100644
index 30fb26ebed..0000000000
--- a/Applications/DisplaySettings/DisplaySettings.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Jesse Buhagiar <jooster669@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "MonitorWidget.h"
-#include <LibGUI/ColorInput.h>
-#include <LibGUI/ComboBox.h>
-
-class DisplaySettingsWidget : public GUI::Widget {
-    C_OBJECT(DisplaySettingsWidget);
-
-public:
-    DisplaySettingsWidget();
-
-private:
-    void create_frame();
-    void create_wallpaper_list();
-    void create_resolution_list();
-    void load_current_settings();
-    void send_settings_to_window_server(); // Apply the settings to the Window Server
-
-    Vector<String> m_wallpapers;
-    Vector<String> m_modes;
-    Vector<Gfx::IntSize> m_resolutions;
-
-    RefPtr<DisplaySettings::MonitorWidget> m_monitor_widget;
-    RefPtr<GUI::ComboBox> m_wallpaper_combo;
-    RefPtr<GUI::ComboBox> m_mode_combo;
-    RefPtr<GUI::ComboBox> m_resolution_combo;
-    RefPtr<GUI::ColorInput> m_color_input;
-};
diff --git a/Applications/DisplaySettings/DisplaySettingsWindow.gml b/Applications/DisplaySettings/DisplaySettingsWindow.gml
deleted file mode 100644
index af9f204f03..0000000000
--- a/Applications/DisplaySettings/DisplaySettingsWindow.gml
+++ /dev/null
@@ -1,117 +0,0 @@
-@GUI::Widget {
-    fill_with_background_color: true
-
-    layout: @GUI::VerticalBoxLayout {
-        margins: [4, 4, 4, 4]
-    }
-
-    @DisplaySettings::MonitorWidget {
-        name: "monitor_widget"
-        fixed_width: 338
-        fixed_height: 248
-    }
-
-    @GUI::Widget {
-        shrink_to_fit: true
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            text: "Wallpaper:"
-            text_alignment: "CenterLeft"
-            fixed_width: 70
-        }
-
-        @GUI::ComboBox {
-            name: "wallpaper_combo"
-        }
-
-        @GUI::Button {
-            name: "wallpaper_open_button"
-            tooltip: "Select wallpaper from file system."
-            button_style: "CoolBar"
-            fixed_width: 22
-            fixed_height: 22
-        }
-    }
-
-    @GUI::Widget {
-        shrink_to_fit: true
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            text: "Modes:"
-            text_alignment: "CenterLeft"
-            fixed_width: 70
-        }
-
-        @GUI::ComboBox {
-            name: "mode_combo"
-        }
-    }
-
-    @GUI::Widget {
-        shrink_to_fit: true
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            text: "Resolution:"
-            text_alignment: "CenterLeft"
-            fixed_width: 70
-        }
-
-        @GUI::ComboBox {
-            name: "resolution_combo"
-        }
-    }
-
-
-    @GUI::Widget {
-        shrink_to_fit: true
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            text: "Color:"
-            text_alignment: "CenterLeft"
-            fixed_width: 70
-        }
-
-        @GUI::ColorInput {
-            name: "color_input"
-            fixed_width: 90
-        }
-    }
-
-    @GUI::Widget {
-    }
-
-    @GUI::Widget {
-        shrink_to_fit: true
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Widget {
-        }
-
-        @GUI::Button {
-            name: "ok_button"
-            text: "OK"
-            fixed_width: 60
-        }
-
-        @GUI::Button {
-            name: "cancel_button"
-            text: "Cancel"
-            fixed_width: 60
-        }
-
-        @GUI::Button {
-            name: "apply_button"
-            text: "Apply"
-            fixed_width: 60
-        }
-    }
-}
diff --git a/Applications/DisplaySettings/MonitorWidget.cpp b/Applications/DisplaySettings/MonitorWidget.cpp
deleted file mode 100644
index d6b809d449..0000000000
--- a/Applications/DisplaySettings/MonitorWidget.cpp
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "MonitorWidget.h"
-#include <LibGUI/Painter.h>
-#include <LibGfx/Bitmap.h>
-
-namespace DisplaySettings {
-
-MonitorWidget::MonitorWidget()
-{
-    m_monitor_bitmap = Gfx::Bitmap::load_from_file("/res/graphics/monitor.png");
-    m_monitor_rect = { 8, 9, 320, 180 };
-}
-
-bool MonitorWidget::set_wallpaper(String path)
-{
-    auto bitmap_ptr = Gfx::Bitmap::load_from_file(path);
-    if (!bitmap_ptr && !path.is_empty())
-        return false;
-    m_desktop_wallpaper_path = path;
-    m_desktop_wallpaper_bitmap = bitmap_ptr;
-    return true;
-}
-
-String MonitorWidget::wallpaper()
-{
-    return m_desktop_wallpaper_path;
-}
-
-void MonitorWidget::set_wallpaper_mode(String mode)
-{
-    m_desktop_wallpaper_mode = mode;
-}
-
-String MonitorWidget::wallpaper_mode()
-{
-    return m_desktop_wallpaper_mode;
-}
-
-void MonitorWidget::set_desktop_resolution(Gfx::IntSize resolution)
-{
-    m_desktop_resolution = resolution;
-}
-
-Gfx::IntSize MonitorWidget::desktop_resolution()
-{
-    return m_desktop_resolution;
-}
-
-void MonitorWidget::set_background_color(Gfx::Color color)
-{
-    m_desktop_color = color;
-}
-
-Gfx::Color MonitorWidget::background_color()
-{
-    return m_desktop_color;
-}
-
-void MonitorWidget::paint_event(GUI::PaintEvent& event)
-{
-    Gfx::IntRect screen_rect = { 0, 0, m_desktop_resolution.width(), m_desktop_resolution.height() };
-    auto screen_bitmap = Gfx::Bitmap::create(m_monitor_bitmap->format(), m_desktop_resolution);
-    GUI::Painter screen_painter(*screen_bitmap);
-    screen_painter.fill_rect(screen_rect, m_desktop_color);
-
-    if (!m_desktop_wallpaper_bitmap.is_null()) {
-        if (m_desktop_wallpaper_mode == "simple") {
-            screen_painter.blit({ 0, 0 }, *m_desktop_wallpaper_bitmap, m_desktop_wallpaper_bitmap->rect());
-        } else if (m_desktop_wallpaper_mode == "center") {
-            Gfx::IntPoint offset { screen_rect.width() / 2 - m_desktop_wallpaper_bitmap->size().width() / 2, screen_rect.height() / 2 - m_desktop_wallpaper_bitmap->size().height() / 2 };
-            screen_painter.blit_offset(screen_rect.location(), *m_desktop_wallpaper_bitmap, screen_rect, offset);
-        } else if (m_desktop_wallpaper_mode == "tile") {
-            screen_painter.draw_tiled_bitmap(screen_bitmap->rect(), *m_desktop_wallpaper_bitmap);
-        } else if (m_desktop_wallpaper_mode == "scaled") {
-            screen_painter.draw_scaled_bitmap(screen_bitmap->rect(), *m_desktop_wallpaper_bitmap, m_desktop_wallpaper_bitmap->rect());
-        } else {
-            ASSERT_NOT_REACHED();
-        }
-    }
-
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(event.rect());
-
-    painter.blit({ 0, 0 }, *m_monitor_bitmap, m_monitor_bitmap->rect());
-    painter.draw_scaled_bitmap(m_monitor_rect, *screen_bitmap, screen_bitmap->rect());
-
-    if (!m_desktop_resolution.is_null()) {
-        painter.draw_text(m_monitor_rect.translated(1, 1), m_desktop_resolution.to_string(), Gfx::TextAlignment::Center, Color::Black);
-        painter.draw_text(m_monitor_rect, m_desktop_resolution.to_string(), Gfx::TextAlignment::Center, Color::White);
-    }
-}
-
-}
diff --git a/Applications/DisplaySettings/MonitorWidget.h b/Applications/DisplaySettings/MonitorWidget.h
deleted file mode 100644
index 1961e91330..0000000000
--- a/Applications/DisplaySettings/MonitorWidget.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Widget.h>
-
-namespace DisplaySettings {
-
-class MonitorWidget final : public GUI::Widget {
-    C_OBJECT(MonitorWidget);
-
-public:
-    bool set_wallpaper(String path);
-    String wallpaper();
-
-    void set_wallpaper_mode(String mode);
-    String wallpaper_mode();
-
-    void set_desktop_resolution(Gfx::IntSize resolution);
-    Gfx::IntSize desktop_resolution();
-
-    void set_background_color(Gfx::Color background_color);
-    Gfx::Color background_color();
-
-private:
-    MonitorWidget();
-
-    virtual void paint_event(GUI::PaintEvent& event) override;
-
-    Gfx::IntRect m_monitor_rect;
-    RefPtr<Gfx::Bitmap> m_monitor_bitmap;
-
-    String m_desktop_wallpaper_path;
-    RefPtr<Gfx::Bitmap> m_desktop_wallpaper_bitmap;
-    String m_desktop_wallpaper_mode;
-    Gfx::IntSize m_desktop_resolution;
-    Gfx::Color m_desktop_color;
-};
-
-}
diff --git a/Applications/DisplaySettings/main.cpp b/Applications/DisplaySettings/main.cpp
deleted file mode 100644
index 5018893470..0000000000
--- a/Applications/DisplaySettings/main.cpp
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Jesse Buhagiar <jooster669@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "DisplaySettings.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/TabWidget.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <stdio.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio thread shared_buffer rpath accept cpath wpath unix fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio thread shared_buffer rpath accept cpath wpath", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-display-settings");
-
-    // Let's create the tab pane that we'll hook our widgets up to :^)
-    auto tab_widget = GUI::TabWidget::construct();
-    tab_widget->add_tab<DisplaySettingsWidget>("Display Settings");
-    tab_widget->set_fill_with_background_color(true); // No black backgrounds!
-
-    auto window = GUI::Window::construct();
-    dbgln("main window: {}", window);
-    window->set_title("Display Settings");
-    window->resize(360, 410);
-    window->set_resizable(false);
-    window->set_main_widget(tab_widget.ptr());
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    auto menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = menubar->add_menu("Display Settings");
-    app_menu.add_action(GUI::CommonActions::make_quit_action([&](const GUI::Action&) {
-        app->quit();
-    }));
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Display Settings", app_icon));
-
-    app->set_menubar(move(menubar));
-    window->show();
-    return app->exec();
-}
diff --git a/Applications/FileManager/CMakeLists.txt b/Applications/FileManager/CMakeLists.txt
deleted file mode 100644
index d81fc89bef..0000000000
--- a/Applications/FileManager/CMakeLists.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-compile_gml(FileManagerWindow.gml FileManagerWindowGML.h file_manager_window_gml)
-
-set(SOURCES
-    DesktopWidget.cpp
-    DirectoryView.cpp
-    FileManagerWindowGML.h
-    FileUtils.cpp
-    main.cpp
-    PropertiesWindow.cpp
-)
-
-serenity_app(FileManager ICON filetype-folder)
-target_link_libraries(FileManager LibGUI LibDesktop)
diff --git a/Applications/FileManager/DesktopWidget.cpp b/Applications/FileManager/DesktopWidget.cpp
deleted file mode 100644
index 7ea01de9e8..0000000000
--- a/Applications/FileManager/DesktopWidget.cpp
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "DesktopWidget.h"
-#include <LibGUI/Painter.h>
-
-namespace FileManager {
-
-DesktopWidget::DesktopWidget()
-{
-}
-
-DesktopWidget::~DesktopWidget()
-{
-}
-
-void DesktopWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(event.rect());
-    painter.clear_rect(event.rect(), Color(0, 0, 0, 0));
-}
-
-}
diff --git a/Applications/FileManager/DesktopWidget.h b/Applications/FileManager/DesktopWidget.h
deleted file mode 100644
index a6fd5b614b..0000000000
--- a/Applications/FileManager/DesktopWidget.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Widget.h>
-
-namespace FileManager {
-
-class DesktopWidget final : public GUI::Widget {
-    C_OBJECT(DesktopWidget);
-
-public:
-    virtual ~DesktopWidget() override;
-
-private:
-    virtual void paint_event(GUI::PaintEvent&) override;
-
-    DesktopWidget();
-};
-
-}
diff --git a/Applications/FileManager/DirectoryView.cpp b/Applications/FileManager/DirectoryView.cpp
deleted file mode 100644
index 6d47d89671..0000000000
--- a/Applications/FileManager/DirectoryView.cpp
+++ /dev/null
@@ -1,591 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "DirectoryView.h"
-#include "FileUtils.h"
-#include <AK/LexicalPath.h>
-#include <AK/NumberFormat.h>
-#include <AK/StringBuilder.h>
-#include <LibCore/MimeData.h>
-#include <LibCore/StandardPaths.h>
-#include <LibGUI/FileIconProvider.h>
-#include <LibGUI/InputBox.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/ModelEditingDelegate.h>
-#include <LibGUI/SortingProxyModel.h>
-#include <serenity.h>
-#include <spawn.h>
-#include <stdio.h>
-#include <unistd.h>
-
-namespace FileManager {
-
-NonnullRefPtr<GUI::Action> LauncherHandler::create_launch_action(Function<void(const LauncherHandler&)> launch_handler)
-{
-    auto icon = GUI::FileIconProvider::icon_for_executable(details().executable).bitmap_for_size(16);
-    return GUI::Action::create(details().name, move(icon), [this, launch_handler = move(launch_handler)](auto&) {
-        launch_handler(*this);
-    });
-}
-
-RefPtr<LauncherHandler> DirectoryView::get_default_launch_handler(const NonnullRefPtrVector<LauncherHandler>& handlers)
-{
-    // If this is an application, pick it first
-    for (size_t i = 0; i < handlers.size(); i++) {
-        if (handlers[i].details().launcher_type == Desktop::Launcher::LauncherType::Application)
-            return handlers[i];
-    }
-    // If there's a handler preferred by the user, pick this first
-    for (size_t i = 0; i < handlers.size(); i++) {
-        if (handlers[i].details().launcher_type == Desktop::Launcher::LauncherType::UserPreferred)
-            return handlers[i];
-    }
-    // Otherwise, use the user's default, if available
-    for (size_t i = 0; i < handlers.size(); i++) {
-        if (handlers[i].details().launcher_type == Desktop::Launcher::LauncherType::UserDefault)
-            return handlers[i];
-    }
-    // If still no match, use the first one we find
-    if (!handlers.is_empty()) {
-        return handlers[0];
-    }
-
-    return {};
-}
-
-NonnullRefPtrVector<LauncherHandler> DirectoryView::get_launch_handlers(const URL& url)
-{
-    NonnullRefPtrVector<LauncherHandler> handlers;
-    for (auto& h : Desktop::Launcher::get_handlers_with_details_for_url(url)) {
-        handlers.append(adopt(*new LauncherHandler(h)));
-    }
-    return handlers;
-}
-
-NonnullRefPtrVector<LauncherHandler> DirectoryView::get_launch_handlers(const String& path)
-{
-    return get_launch_handlers(URL::create_with_file_protocol(path));
-}
-
-void DirectoryView::handle_activation(const GUI::ModelIndex& index)
-{
-    if (!index.is_valid())
-        return;
-    dbgln("on activation: {},{}, this={:p}, m_model={:p}", index.row(), index.column(), this, m_model.ptr());
-    auto& node = this->node(index);
-    auto path = node.full_path();
-
-    struct stat st;
-    if (stat(path.characters(), &st) < 0) {
-        perror("stat");
-        return;
-    }
-
-    if (S_ISDIR(st.st_mode)) {
-        if (is_desktop()) {
-            Desktop::Launcher::open(URL::create_with_file_protocol(path));
-            return;
-        }
-        open(path);
-        return;
-    }
-
-    auto url = URL::create_with_file_protocol(path);
-    auto launcher_handlers = get_launch_handlers(url);
-    auto default_launcher = get_default_launch_handler(launcher_handlers);
-    if (default_launcher) {
-        launch(url, *default_launcher);
-    } else {
-        auto error_message = String::format("Could not open %s", path.characters());
-        GUI::MessageBox::show(window(), error_message, "File Manager", GUI::MessageBox::Type::Error);
-    }
-}
-
-DirectoryView::DirectoryView(Mode mode)
-    : m_mode(mode)
-    , m_model(GUI::FileSystemModel::create({}))
-    , m_sorting_model(GUI::SortingProxyModel::create(m_model))
-{
-    set_active_widget(nullptr);
-    set_content_margins({ 2, 2, 2, 2 });
-
-    setup_actions();
-
-    m_error_label = add<GUI::Label>();
-    m_error_label->set_font(m_error_label->font().bold_variant());
-
-    setup_model();
-
-    setup_icon_view();
-    if (mode != Mode::Desktop) {
-        setup_columns_view();
-        setup_table_view();
-    }
-
-    set_view_mode(ViewMode::Icon);
-}
-
-const GUI::FileSystemModel::Node& DirectoryView::node(const GUI::ModelIndex& index) const
-{
-    return model().node(m_sorting_model->map_to_source(index));
-}
-
-void DirectoryView::setup_model()
-{
-    m_model->on_error = [this](int, const char* error_string) {
-        auto failed_path = m_model->root_path();
-        auto error_message = String::formatted("Could not read {}:\n{}", failed_path, error_string);
-        m_error_label->set_text(error_message);
-        set_active_widget(m_error_label);
-
-        m_mkdir_action->set_enabled(false);
-        m_touch_action->set_enabled(false);
-
-        add_path_to_history(model().root_path());
-
-        if (on_path_change)
-            on_path_change(failed_path, false);
-    };
-
-    m_model->on_complete = [this] {
-        if (m_table_view)
-            m_table_view->selection().clear();
-        if (m_icon_view)
-            m_icon_view->selection().clear();
-
-        add_path_to_history(model().root_path());
-
-        bool can_write_in_path = access(model().root_path().characters(), W_OK) == 0;
-
-        m_mkdir_action->set_enabled(can_write_in_path);
-        m_touch_action->set_enabled(can_write_in_path);
-
-        if (on_path_change)
-            on_path_change(model().root_path(), can_write_in_path);
-    };
-
-    m_model->register_client(*this);
-
-    m_model->on_thumbnail_progress = [this](int done, int total) {
-        if (on_thumbnail_progress)
-            on_thumbnail_progress(done, total);
-    };
-
-    if (is_desktop())
-        m_model->set_root_path(Core::StandardPaths::desktop_directory());
-}
-
-void DirectoryView::setup_icon_view()
-{
-    m_icon_view = add<GUI::IconView>();
-    m_icon_view->set_should_hide_unnecessary_scrollbars(true);
-    m_icon_view->set_selection_mode(GUI::AbstractView::SelectionMode::MultiSelection);
-    m_icon_view->set_editable(true);
-    m_icon_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed);
-    m_icon_view->aid_create_editing_delegate = [](auto&) {
-        return make<GUI::StringModelEditingDelegate>();
-    };
-
-    if (is_desktop()) {
-        m_icon_view->set_frame_shape(Gfx::FrameShape::NoFrame);
-        m_icon_view->set_scrollbars_enabled(false);
-        m_icon_view->set_fill_with_background_color(false);
-        m_icon_view->set_draw_item_text_with_shadow(true);
-        m_icon_view->set_flow_direction(GUI::IconView::FlowDirection::TopToBottom);
-    }
-
-    m_icon_view->set_model(m_sorting_model);
-    m_icon_view->set_model_column(GUI::FileSystemModel::Column::Name);
-    m_icon_view->on_activation = [&](auto& index) {
-        handle_activation(index);
-    };
-    m_icon_view->on_selection_change = [this] {
-        handle_selection_change();
-    };
-    m_icon_view->on_context_menu_request = [this](auto& index, auto& event) {
-        if (on_context_menu_request)
-            on_context_menu_request(index, event);
-    };
-    m_icon_view->on_drop = [this](auto& index, auto& event) {
-        handle_drop(index, event);
-    };
-}
-
-void DirectoryView::setup_columns_view()
-{
-    m_columns_view = add<GUI::ColumnsView>();
-    m_columns_view->set_should_hide_unnecessary_scrollbars(true);
-    m_columns_view->set_selection_mode(GUI::AbstractView::SelectionMode::MultiSelection);
-    m_columns_view->set_editable(true);
-    m_columns_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed);
-    m_columns_view->aid_create_editing_delegate = [](auto&) {
-        return make<GUI::StringModelEditingDelegate>();
-    };
-
-    m_columns_view->set_model(m_sorting_model);
-    m_columns_view->set_model_column(GUI::FileSystemModel::Column::Name);
-
-    m_columns_view->on_activation = [&](auto& index) {
-        handle_activation(index);
-    };
-
-    m_columns_view->on_selection_change = [this] {
-        handle_selection_change();
-    };
-
-    m_columns_view->on_context_menu_request = [this](auto& index, auto& event) {
-        if (on_context_menu_request)
-            on_context_menu_request(index, event);
-    };
-
-    m_columns_view->on_drop = [this](auto& index, auto& event) {
-        handle_drop(index, event);
-    };
-}
-
-void DirectoryView::setup_table_view()
-{
-    m_table_view = add<GUI::TableView>();
-    m_table_view->set_should_hide_unnecessary_scrollbars(true);
-    m_table_view->set_selection_mode(GUI::AbstractView::SelectionMode::MultiSelection);
-    m_table_view->set_editable(true);
-    m_table_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed);
-    m_table_view->aid_create_editing_delegate = [](auto&) {
-        return make<GUI::StringModelEditingDelegate>();
-    };
-
-    m_table_view->set_model(m_sorting_model);
-    m_table_view->set_key_column_and_sort_order(GUI::FileSystemModel::Column::Name, GUI::SortOrder::Ascending);
-
-    m_table_view->on_activation = [&](auto& index) {
-        handle_activation(index);
-    };
-
-    m_table_view->on_selection_change = [this] {
-        handle_selection_change();
-    };
-
-    m_table_view->on_context_menu_request = [this](auto& index, auto& event) {
-        if (on_context_menu_request)
-            on_context_menu_request(index, event);
-    };
-
-    m_table_view->on_drop = [this](auto& index, auto& event) {
-        handle_drop(index, event);
-    };
-}
-
-DirectoryView::~DirectoryView()
-{
-    m_model->unregister_client(*this);
-}
-
-void DirectoryView::model_did_update(unsigned flags)
-{
-    if (flags & GUI::Model::UpdateFlag::InvalidateAllIndexes) {
-        for_each_view_implementation([](auto& view) {
-            view.selection().clear();
-        });
-    }
-    update_statusbar();
-}
-
-void DirectoryView::set_view_mode(ViewMode mode)
-{
-    if (m_view_mode == mode)
-        return;
-    m_view_mode = mode;
-    update();
-    if (mode == ViewMode::Table) {
-        set_active_widget(m_table_view);
-        return;
-    }
-    if (mode == ViewMode::Columns) {
-        set_active_widget(m_columns_view);
-        return;
-    }
-    if (mode == ViewMode::Icon) {
-        set_active_widget(m_icon_view);
-        return;
-    }
-    ASSERT_NOT_REACHED();
-}
-
-void DirectoryView::add_path_to_history(const StringView& path)
-{
-    if (m_path_history.size() && m_path_history.at(m_path_history_position) == path)
-        return;
-
-    if (m_path_history_position < m_path_history.size())
-        m_path_history.resize(m_path_history_position + 1);
-
-    m_path_history.append(path);
-    m_path_history_position = m_path_history.size() - 1;
-}
-
-void DirectoryView::open(const StringView& path)
-{
-    if (model().root_path() == path) {
-        model().update();
-        return;
-    }
-
-    set_active_widget(&current_view());
-    model().set_root_path(path);
-}
-
-void DirectoryView::set_status_message(const StringView& message)
-{
-    if (on_status_message)
-        on_status_message(message);
-}
-
-void DirectoryView::open_parent_directory()
-{
-    auto path = String::formatted("{}/..", model().root_path());
-    model().set_root_path(path);
-}
-
-void DirectoryView::refresh()
-{
-    model().update();
-}
-
-void DirectoryView::open_previous_directory()
-{
-    if (m_path_history_position > 0) {
-        set_active_widget(&current_view());
-        m_path_history_position--;
-        model().set_root_path(m_path_history[m_path_history_position]);
-    }
-}
-void DirectoryView::open_next_directory()
-{
-    if (m_path_history_position < m_path_history.size() - 1) {
-        set_active_widget(&current_view());
-        m_path_history_position++;
-        model().set_root_path(m_path_history[m_path_history_position]);
-    }
-}
-
-void DirectoryView::update_statusbar()
-{
-    // If we're triggered during widget construction, just ignore it.
-    if (m_view_mode == ViewMode::Invalid)
-        return;
-
-    size_t total_size = model().node({}).total_size;
-    if (current_view().selection().is_empty()) {
-        set_status_message(String::formatted("{} item(s) ({})",
-            model().row_count(),
-            human_readable_size(total_size)));
-        return;
-    }
-
-    int selected_item_count = current_view().selection().size();
-    size_t selected_byte_count = 0;
-
-    current_view().selection().for_each_index([&](auto& index) {
-        auto& model = *current_view().model();
-        auto size_index = model.index(index.row(), GUI::FileSystemModel::Column::Size, model.parent_index(index));
-        auto file_size = size_index.data().to_i32();
-        selected_byte_count += file_size;
-    });
-
-    StringBuilder builder;
-    builder.append(String::number(selected_item_count));
-    builder.append(" item");
-    if (selected_item_count != 1)
-        builder.append('s');
-    builder.append(" selected (");
-    builder.append(human_readable_size(selected_byte_count).characters());
-    builder.append(')');
-
-    if (selected_item_count == 1) {
-        auto& node = this->node(current_view().selection().first());
-        if (!node.symlink_target.is_empty()) {
-            builder.append(" -> ");
-            builder.append(node.symlink_target);
-        }
-    }
-
-    set_status_message(builder.to_string());
-}
-
-void DirectoryView::set_should_show_dotfiles(bool show_dotfiles)
-{
-    m_model->set_should_show_dotfiles(show_dotfiles);
-}
-
-void DirectoryView::launch(const URL&, const LauncherHandler& launcher_handler)
-{
-    pid_t child;
-    if (launcher_handler.details().launcher_type == Desktop::Launcher::LauncherType::Application) {
-        const char* argv[] = { launcher_handler.details().name.characters(), nullptr };
-        posix_spawn(&child, launcher_handler.details().executable.characters(), nullptr, nullptr, const_cast<char**>(argv), environ);
-        if (disown(child) < 0)
-            perror("disown");
-    } else {
-        for (auto& path : selected_file_paths()) {
-            const char* argv[] = { launcher_handler.details().name.characters(), path.characters(), nullptr };
-            posix_spawn(&child, launcher_handler.details().executable.characters(), nullptr, nullptr, const_cast<char**>(argv), environ);
-            if (disown(child) < 0)
-                perror("disown");
-        }
-    }
-}
-
-Vector<String> DirectoryView::selected_file_paths() const
-{
-    Vector<String> paths;
-    auto& view = current_view();
-    auto& model = *view.model();
-    view.selection().for_each_index([&](const GUI::ModelIndex& index) {
-        auto parent_index = model.parent_index(index);
-        auto name_index = model.index(index.row(), GUI::FileSystemModel::Column::Name, parent_index);
-        auto path = name_index.data(GUI::ModelRole::Custom).to_string();
-        paths.append(path);
-    });
-    return paths;
-}
-
-void DirectoryView::do_delete(bool should_confirm)
-{
-    auto paths = selected_file_paths();
-    ASSERT(!paths.is_empty());
-    FileUtils::delete_paths(paths, should_confirm, window());
-}
-
-void DirectoryView::handle_selection_change()
-{
-    update_statusbar();
-
-    bool can_delete = !current_view().selection().is_empty() && access(path().characters(), W_OK) == 0;
-    m_delete_action->set_enabled(can_delete);
-    m_force_delete_action->set_enabled(can_delete);
-
-    if (on_selection_change)
-        on_selection_change(current_view());
-}
-
-void DirectoryView::setup_actions()
-{
-    m_mkdir_action = GUI::Action::create("New directory...", { Mod_Ctrl | Mod_Shift, Key_N }, Gfx::Bitmap::load_from_file("/res/icons/16x16/mkdir.png"), [&](const GUI::Action&) {
-        String value;
-        if (GUI::InputBox::show(value, window(), "Enter name:", "New directory") == GUI::InputBox::ExecOK && !value.is_empty()) {
-            auto new_dir_path = LexicalPath::canonicalized_path(String::formatted("{}/{}", path(), value));
-            int rc = mkdir(new_dir_path.characters(), 0777);
-            if (rc < 0) {
-                auto saved_errno = errno;
-                GUI::MessageBox::show(window(), String::formatted("mkdir(\"{}\") failed: {}", new_dir_path, strerror(saved_errno)), "Error", GUI::MessageBox::Type::Error);
-            }
-        }
-    });
-
-    m_touch_action = GUI::Action::create("New file...", { Mod_Ctrl | Mod_Shift, Key_F }, Gfx::Bitmap::load_from_file("/res/icons/16x16/new.png"), [&](const GUI::Action&) {
-        String value;
-        if (GUI::InputBox::show(value, window(), "Enter name:", "New file") == GUI::InputBox::ExecOK && !value.is_empty()) {
-            auto new_file_path = LexicalPath::canonicalized_path(String::formatted("{}/{}", path(), value));
-            struct stat st;
-            int rc = stat(new_file_path.characters(), &st);
-            if ((rc < 0 && errno != ENOENT)) {
-                auto saved_errno = errno;
-                GUI::MessageBox::show(window(), String::formatted("stat(\"{}\") failed: {}", new_file_path, strerror(saved_errno)), "Error", GUI::MessageBox::Type::Error);
-                return;
-            }
-            if (rc == 0) {
-                GUI::MessageBox::show(window(), String::formatted("{}: Already exists", new_file_path), "Error", GUI::MessageBox::Type::Error);
-                return;
-            }
-            int fd = creat(new_file_path.characters(), 0666);
-            if (fd < 0) {
-                auto saved_errno = errno;
-                GUI::MessageBox::show(window(), String::formatted("creat(\"{}\") failed: {}", new_file_path, strerror(saved_errno)), "Error", GUI::MessageBox::Type::Error);
-                return;
-            }
-            rc = close(fd);
-            ASSERT(rc >= 0);
-        }
-    });
-
-    m_open_terminal_action = GUI::Action::create("Open Terminal here", Gfx::Bitmap::load_from_file("/res/icons/16x16/app-terminal.png"), [&](auto&) {
-        posix_spawn_file_actions_t spawn_actions;
-        posix_spawn_file_actions_init(&spawn_actions);
-        posix_spawn_file_actions_addchdir(&spawn_actions, path().characters());
-        pid_t pid;
-        const char* argv[] = { "Terminal", nullptr };
-        if ((errno = posix_spawn(&pid, "/bin/Terminal", &spawn_actions, nullptr, const_cast<char**>(argv), environ))) {
-            perror("posix_spawn");
-        } else {
-            if (disown(pid) < 0)
-                perror("disown");
-        }
-        posix_spawn_file_actions_destroy(&spawn_actions);
-    });
-
-    m_delete_action = GUI::CommonActions::make_delete_action([this](auto&) { do_delete(true); }, window());
-
-    m_force_delete_action = GUI::Action::create(
-        "Delete without confirmation", { Mod_Shift, Key_Delete },
-        [this](auto&) { do_delete(false); },
-        window());
-}
-
-void DirectoryView::handle_drop(const GUI::ModelIndex& index, const GUI::DropEvent& event)
-{
-    if (!event.mime_data().has_urls())
-        return;
-    auto urls = event.mime_data().urls();
-    if (urls.is_empty()) {
-        dbgln("No files to drop");
-        return;
-    }
-
-    auto& target_node = node(index);
-    if (!target_node.is_directory())
-        return;
-
-    bool had_accepted_drop = false;
-    for (auto& url_to_copy : urls) {
-        if (!url_to_copy.is_valid() || url_to_copy.path() == target_node.full_path())
-            continue;
-        auto new_path = String::formatted("{}/{}", target_node.full_path(), LexicalPath(url_to_copy.path()).basename());
-        if (url_to_copy.path() == new_path)
-            continue;
-
-        if (!FileUtils::copy_file_or_directory(url_to_copy.path(), new_path)) {
-            auto error_message = String::formatted("Could not copy {} into {}.", url_to_copy.to_string(), new_path);
-            GUI::MessageBox::show(window(), error_message, "File Manager", GUI::MessageBox::Type::Error);
-        } else {
-            had_accepted_drop = true;
-        }
-    }
-    if (had_accepted_drop && on_accepted_drop)
-        on_accepted_drop();
-}
-
-}
diff --git a/Applications/FileManager/DirectoryView.h b/Applications/FileManager/DirectoryView.h
deleted file mode 100644
index a72b63aaf5..0000000000
--- a/Applications/FileManager/DirectoryView.h
+++ /dev/null
@@ -1,190 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/URL.h>
-#include <AK/Vector.h>
-#include <LibDesktop/Launcher.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/ColumnsView.h>
-#include <LibGUI/FileSystemModel.h>
-#include <LibGUI/IconView.h>
-#include <LibGUI/StackWidget.h>
-#include <LibGUI/TableView.h>
-#include <sys/stat.h>
-
-namespace FileManager {
-
-class LauncherHandler : public RefCounted<LauncherHandler> {
-public:
-    LauncherHandler(const NonnullRefPtr<Desktop::Launcher::Details>& details)
-        : m_details(details)
-    {
-    }
-
-    NonnullRefPtr<GUI::Action> create_launch_action(Function<void(const LauncherHandler&)>);
-    const Desktop::Launcher::Details& details() const { return *m_details; }
-
-private:
-    NonnullRefPtr<Desktop::Launcher::Details> m_details;
-};
-
-class DirectoryView final
-    : public GUI::StackWidget
-    , private GUI::ModelClient {
-    C_OBJECT(DirectoryView);
-
-public:
-    enum class Mode {
-        Desktop,
-        Normal,
-    };
-
-    virtual ~DirectoryView() override;
-
-    void open(const StringView& path);
-    String path() const { return model().root_path(); }
-    void open_parent_directory();
-    void open_previous_directory();
-    void open_next_directory();
-    int path_history_size() const { return m_path_history.size(); }
-    int path_history_position() const { return m_path_history_position; }
-    static RefPtr<LauncherHandler> get_default_launch_handler(const NonnullRefPtrVector<LauncherHandler>& handlers);
-    NonnullRefPtrVector<LauncherHandler> get_launch_handlers(const URL& url);
-    NonnullRefPtrVector<LauncherHandler> get_launch_handlers(const String& path);
-
-    void refresh();
-
-    void launch(const AK::URL&, const LauncherHandler&);
-
-    Function<void(const StringView& path, bool can_write_in_path)> on_path_change;
-    Function<void(GUI::AbstractView&)> on_selection_change;
-    Function<void(const GUI::ModelIndex&, const GUI::ContextMenuEvent&)> on_context_menu_request;
-    Function<void(const StringView&)> on_status_message;
-    Function<void(int done, int total)> on_thumbnail_progress;
-    Function<void()> on_accepted_drop;
-
-    enum ViewMode {
-        Invalid,
-        Table,
-        Columns,
-        Icon
-    };
-    void set_view_mode(ViewMode);
-    ViewMode view_mode() const { return m_view_mode; }
-
-    GUI::AbstractView& current_view()
-    {
-        switch (m_view_mode) {
-        case ViewMode::Table:
-            return *m_table_view;
-        case ViewMode::Columns:
-            return *m_columns_view;
-        case ViewMode::Icon:
-            return *m_icon_view;
-        default:
-            ASSERT_NOT_REACHED();
-        }
-    }
-
-    const GUI::AbstractView& current_view() const
-    {
-        return const_cast<DirectoryView*>(this)->current_view();
-    }
-
-    template<typename Callback>
-    void for_each_view_implementation(Callback callback)
-    {
-        if (m_icon_view)
-            callback(*m_icon_view);
-        if (m_table_view)
-            callback(*m_table_view);
-        if (m_columns_view)
-            callback(*m_columns_view);
-    }
-
-    void set_should_show_dotfiles(bool);
-
-    const GUI::FileSystemModel::Node& node(const GUI::ModelIndex&) const;
-
-    bool is_desktop() const { return m_mode == Mode::Desktop; }
-
-    Vector<String> selected_file_paths() const;
-
-    GUI::Action& mkdir_action() { return *m_mkdir_action; }
-    GUI::Action& touch_action() { return *m_touch_action; }
-    GUI::Action& open_terminal_action() { return *m_open_terminal_action; }
-    GUI::Action& delete_action() { return *m_delete_action; }
-    GUI::Action& force_delete_action() { return *m_force_delete_action; }
-
-private:
-    explicit DirectoryView(Mode);
-
-    const GUI::FileSystemModel& model() const { return *m_model; }
-    GUI::FileSystemModel& model() { return *m_model; }
-
-    void handle_selection_change();
-    void handle_drop(const GUI::ModelIndex&, const GUI::DropEvent&);
-    void do_delete(bool should_confirm);
-
-    // ^GUI::ModelClient
-    virtual void model_did_update(unsigned) override;
-
-    void setup_actions();
-    void setup_model();
-    void setup_icon_view();
-    void setup_columns_view();
-    void setup_table_view();
-
-    void handle_activation(const GUI::ModelIndex&);
-
-    void set_status_message(const StringView&);
-    void update_statusbar();
-
-    Mode m_mode { Mode::Normal };
-    ViewMode m_view_mode { Invalid };
-
-    NonnullRefPtr<GUI::FileSystemModel> m_model;
-    NonnullRefPtr<GUI::SortingProxyModel> m_sorting_model;
-    size_t m_path_history_position { 0 };
-    Vector<String> m_path_history;
-    void add_path_to_history(const StringView& path);
-
-    RefPtr<GUI::Label> m_error_label;
-
-    RefPtr<GUI::TableView> m_table_view;
-    RefPtr<GUI::IconView> m_icon_view;
-    RefPtr<GUI::ColumnsView> m_columns_view;
-
-    RefPtr<GUI::Action> m_mkdir_action;
-    RefPtr<GUI::Action> m_touch_action;
-    RefPtr<GUI::Action> m_open_terminal_action;
-    RefPtr<GUI::Action> m_delete_action;
-    RefPtr<GUI::Action> m_force_delete_action;
-};
-
-}
diff --git a/Applications/FileManager/FileManagerWindow.gml b/Applications/FileManager/FileManagerWindow.gml
deleted file mode 100644
index a13218dd16..0000000000
--- a/Applications/FileManager/FileManagerWindow.gml
+++ /dev/null
@@ -1,53 +0,0 @@
-@GUI::Widget {
-    fill_with_background_color: true
-    layout: @GUI::VerticalBoxLayout {
-        spacing: 2
-    }
-
-    @GUI::ToolBarContainer {
-        @GUI::ToolBar {
-            name: "main_toolbar"
-        }
-        @GUI::ToolBar {
-            name: "location_toolbar"
-            visible: false
-
-            @GUI::Label {
-                text: "Location: "
-                autosize: true
-            }
-
-            @GUI::TextBox {
-                name: "location_textbox"
-                fixed_height: 22
-            }
-        }
-        @GUI::ToolBar {
-            name: "breadcrumb_toolbar"
-
-            @GUI::BreadcrumbBar {
-                name: "breadcrumb_bar"
-            }
-        }
-    }
-
-    @GUI::HorizontalSplitter {
-        name: "splitter"
-
-        @GUI::TreeView {
-            name: "tree_view"
-            fixed_width: 175
-        }
-
-    }
-
-    @GUI::StatusBar {
-        name: "statusbar"
-
-        @GUI::ProgressBar {
-            name: "progressbar"
-            text: "Generating thumbnails: "
-            visible: false
-        }
-    }
-}
diff --git a/Applications/FileManager/FileUtils.cpp b/Applications/FileManager/FileUtils.cpp
deleted file mode 100644
index 76d2ee0079..0000000000
--- a/Applications/FileManager/FileUtils.cpp
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "FileUtils.h"
-#include <AK/LexicalPath.h>
-#include <AK/ScopeGuard.h>
-#include <AK/StringBuilder.h>
-#include <LibCore/DirIterator.h>
-#include <LibCore/File.h>
-#include <LibGUI/MessageBox.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-namespace FileUtils {
-
-void delete_path(const String& path, GUI::Window* parent_window)
-{
-    struct stat st;
-    if (lstat(path.characters(), &st)) {
-        GUI::MessageBox::show(parent_window,
-            String::formatted("lstat({}) failed: {}", path, strerror(errno)),
-            "Delete failed",
-            GUI::MessageBox::Type::Error);
-    }
-
-    if (S_ISDIR(st.st_mode)) {
-        String error_path;
-        int error = FileUtils::delete_directory(path, error_path);
-
-        if (error) {
-            GUI::MessageBox::show(parent_window,
-                String::formatted("Failed to delete directory \"{}\": {}", error_path, strerror(error)),
-                "Delete failed",
-                GUI::MessageBox::Type::Error);
-        }
-    } else if (unlink(path.characters()) < 0) {
-        int saved_errno = errno;
-        GUI::MessageBox::show(parent_window,
-            String::formatted("unlink(\"{}\") failed: {}", path, strerror(saved_errno)),
-            "Delete failed",
-            GUI::MessageBox::Type::Error);
-    }
-}
-
-void delete_paths(const Vector<String>& paths, bool should_confirm, GUI::Window* parent_window)
-{
-    String message;
-    if (paths.size() == 1) {
-        message = String::formatted("Really delete {}?", LexicalPath(paths[0]).basename());
-    } else {
-        message = String::formatted("Really delete {} files?", paths.size());
-    }
-
-    if (should_confirm) {
-        auto result = GUI::MessageBox::show(parent_window,
-            message,
-            "Confirm deletion",
-            GUI::MessageBox::Type::Warning,
-            GUI::MessageBox::InputType::OKCancel);
-        if (result == GUI::MessageBox::ExecCancel)
-            return;
-    }
-
-    for (auto& path : paths) {
-        delete_path(path, parent_window);
-    }
-}
-
-int delete_directory(String directory, String& file_that_caused_error)
-{
-    Core::DirIterator iterator(directory, Core::DirIterator::SkipDots);
-    if (iterator.has_error()) {
-        file_that_caused_error = directory;
-        return -1;
-    }
-
-    while (iterator.has_next()) {
-        auto file_to_delete = String::formatted("{}/{}", directory, iterator.next_path());
-        struct stat st;
-
-        if (lstat(file_to_delete.characters(), &st)) {
-            file_that_caused_error = file_to_delete;
-            return errno;
-        }
-
-        if (S_ISDIR(st.st_mode)) {
-            if (delete_directory(file_to_delete, file_to_delete)) {
-                file_that_caused_error = file_to_delete;
-                return errno;
-            }
-        } else if (unlink(file_to_delete.characters())) {
-            file_that_caused_error = file_to_delete;
-            return errno;
-        }
-    }
-
-    if (rmdir(directory.characters())) {
-        file_that_caused_error = directory;
-        return errno;
-    }
-
-    return 0;
-}
-
-bool copy_file_or_directory(const String& src_path, const String& dst_path)
-{
-    int duplicate_count = 0;
-    while (access(get_duplicate_name(dst_path, duplicate_count).characters(), F_OK) == 0) {
-        ++duplicate_count;
-    }
-    if (duplicate_count != 0) {
-        return copy_file_or_directory(src_path, get_duplicate_name(dst_path, duplicate_count));
-    }
-
-    auto source_or_error = Core::File::open(src_path, Core::IODevice::ReadOnly);
-    if (source_or_error.is_error())
-        return false;
-
-    auto& source = *source_or_error.value();
-
-    struct stat src_stat;
-    int rc = fstat(source.fd(), &src_stat);
-    if (rc < 0)
-        return false;
-
-    if (source.is_directory())
-        return copy_directory(src_path, dst_path, src_stat);
-
-    return copy_file(dst_path, src_stat, source);
-}
-
-bool copy_directory(const String& src_path, const String& dst_path, const struct stat& src_stat)
-{
-    int rc = mkdir(dst_path.characters(), 0755);
-    if (rc < 0) {
-        return false;
-    }
-    Core::DirIterator di(src_path, Core::DirIterator::SkipDots);
-    if (di.has_error()) {
-        return false;
-    }
-    while (di.has_next()) {
-        String filename = di.next_path();
-        bool is_copied = copy_file_or_directory(
-            String::formatted("{}/{}", src_path, filename),
-            String::formatted("{}/{}", dst_path, filename));
-        if (!is_copied) {
-            return false;
-        }
-    }
-
-    auto my_umask = umask(0);
-    umask(my_umask);
-    rc = chmod(dst_path.characters(), src_stat.st_mode & ~my_umask);
-    if (rc < 0) {
-        return false;
-    }
-    return true;
-}
-
-bool copy_file(const String& dst_path, const struct stat& src_stat, Core::File& source)
-{
-    int dst_fd = creat(dst_path.characters(), 0666);
-    if (dst_fd < 0) {
-        if (errno != EISDIR) {
-            return false;
-        }
-        auto dst_dir_path = String::formatted("{}/{}", dst_path, LexicalPath(source.filename()).basename());
-        dst_fd = creat(dst_dir_path.characters(), 0666);
-        if (dst_fd < 0) {
-            return false;
-        }
-    }
-
-    ScopeGuard close_fd_guard([dst_fd]() { close(dst_fd); });
-
-    if (src_stat.st_size > 0) {
-        if (ftruncate(dst_fd, src_stat.st_size) < 0) {
-            perror("cp: ftruncate");
-            return false;
-        }
-    }
-
-    for (;;) {
-        char buffer[32768];
-        ssize_t nread = read(source.fd(), buffer, sizeof(buffer));
-        if (nread < 0) {
-            return false;
-        }
-        if (nread == 0)
-            break;
-        ssize_t remaining_to_write = nread;
-        char* bufptr = buffer;
-        while (remaining_to_write) {
-            ssize_t nwritten = write(dst_fd, bufptr, remaining_to_write);
-            if (nwritten < 0) {
-                return false;
-            }
-            assert(nwritten > 0);
-            remaining_to_write -= nwritten;
-            bufptr += nwritten;
-        }
-    }
-
-    auto my_umask = umask(0);
-    umask(my_umask);
-    int rc = fchmod(dst_fd, src_stat.st_mode & ~my_umask);
-    if (rc < 0) {
-        return false;
-    }
-
-    return true;
-}
-
-bool link_file(const String& src_path, const String& dst_path)
-{
-    int duplicate_count = 0;
-    while (access(get_duplicate_name(dst_path, duplicate_count).characters(), F_OK) == 0) {
-        ++duplicate_count;
-    }
-    if (duplicate_count != 0) {
-        return link_file(src_path, get_duplicate_name(dst_path, duplicate_count));
-    }
-    int rc = symlink(src_path.characters(), dst_path.characters());
-    if (rc < 0) {
-        return false;
-    }
-
-    return true;
-}
-
-String get_duplicate_name(const String& path, int duplicate_count)
-{
-    if (duplicate_count == 0) {
-        return path;
-    }
-    LexicalPath lexical_path(path);
-    StringBuilder duplicated_name;
-    duplicated_name.append('/');
-    for (size_t i = 0; i < lexical_path.parts().size() - 1; ++i) {
-        duplicated_name.appendff("{}/", lexical_path.parts()[i]);
-    }
-    auto prev_duplicate_tag = String::formatted("({})", duplicate_count);
-    auto title = lexical_path.title();
-    if (title.ends_with(prev_duplicate_tag)) {
-        // remove the previous duplicate tag "(n)" so we can add a new tag.
-        title = title.substring(0, title.length() - prev_duplicate_tag.length());
-    }
-    duplicated_name.appendff("{} ({})", lexical_path.title(), duplicate_count);
-    if (!lexical_path.extension().is_empty()) {
-        duplicated_name.appendff(".{}", lexical_path.extension());
-    }
-    return duplicated_name.build();
-}
-}
diff --git a/Applications/FileManager/FileUtils.h b/Applications/FileManager/FileUtils.h
deleted file mode 100644
index fcf6b483ac..0000000000
--- a/Applications/FileManager/FileUtils.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/String.h>
-#include <LibCore/Forward.h>
-#include <LibGUI/Forward.h>
-#include <sys/stat.h>
-
-namespace FileUtils {
-
-enum class FileOperation {
-    Copy = 0,
-    Cut
-};
-
-void delete_path(const String&, GUI::Window*);
-void delete_paths(const Vector<String>&, bool should_confirm, GUI::Window*);
-int delete_directory(String directory, String& file_that_caused_error);
-bool copy_file_or_directory(const String& src_path, const String& dst_path);
-String get_duplicate_name(const String& path, int duplicate_count);
-bool copy_file(const String& dst_path, const struct stat& src_stat, Core::File&);
-bool copy_directory(const String& src_path, const String& dst_path, const struct stat& src_stat);
-bool link_file(const String& src_path, const String& dst_path);
-
-}
diff --git a/Applications/FileManager/PropertiesWindow.cpp b/Applications/FileManager/PropertiesWindow.cpp
deleted file mode 100644
index 8c0ff9f74e..0000000000
--- a/Applications/FileManager/PropertiesWindow.cpp
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "PropertiesWindow.h"
-#include <AK/LexicalPath.h>
-#include <AK/StringBuilder.h>
-#include <LibDesktop/Launcher.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/CheckBox.h>
-#include <LibGUI/FileIconProvider.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/LinkLabel.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/SeparatorWidget.h>
-#include <LibGUI/TabWidget.h>
-#include <grp.h>
-#include <limits.h>
-#include <pwd.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-
-PropertiesWindow::PropertiesWindow(const String& path, bool disable_rename, Window* parent_window)
-    : Window(parent_window)
-{
-    auto lexical_path = LexicalPath(path);
-    ASSERT(lexical_path.is_valid());
-
-    auto& main_widget = set_main_widget<GUI::Widget>();
-    main_widget.set_layout<GUI::VerticalBoxLayout>();
-    main_widget.layout()->set_margins({ 4, 4, 4, 4 });
-    main_widget.set_fill_with_background_color(true);
-
-    set_rect({ 0, 0, 360, 420 });
-    set_resizable(false);
-
-    auto& tab_widget = main_widget.add<GUI::TabWidget>();
-
-    auto& general_tab = tab_widget.add_tab<GUI::Widget>("General");
-    general_tab.set_layout<GUI::VerticalBoxLayout>();
-    general_tab.layout()->set_margins({ 12, 8, 12, 8 });
-    general_tab.layout()->set_spacing(10);
-
-    auto& file_container = general_tab.add<GUI::Widget>();
-    file_container.set_layout<GUI::HorizontalBoxLayout>();
-    file_container.layout()->set_spacing(20);
-    file_container.set_fixed_height(34);
-
-    m_icon = file_container.add<GUI::ImageWidget>();
-    m_icon->set_fixed_size(32, 32);
-
-    m_name = lexical_path.basename();
-    m_path = lexical_path.string();
-    m_parent_path = lexical_path.dirname();
-
-    m_name_box = file_container.add<GUI::TextBox>();
-    m_name_box->set_text(m_name);
-    m_name_box->set_mode(disable_rename ? GUI::TextBox::Mode::DisplayOnly : GUI::TextBox::Mode::Editable);
-    m_name_box->on_change = [&]() {
-        m_name_dirty = m_name != m_name_box->text();
-        m_apply_button->set_enabled(m_name_dirty || m_permissions_dirty);
-    };
-
-    set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/properties.png"));
-    general_tab.add<GUI::SeparatorWidget>(Gfx::Orientation::Horizontal);
-
-    struct stat st;
-    if (lstat(path.characters(), &st)) {
-        perror("stat");
-        return;
-    }
-
-    String owner_name;
-    String group_name;
-
-    if (auto* pw = getpwuid(st.st_uid)) {
-        owner_name = pw->pw_name;
-    } else {
-        owner_name = "n/a";
-    }
-
-    if (auto* gr = getgrgid(st.st_gid)) {
-        group_name = gr->gr_name;
-    } else {
-        group_name = "n/a";
-    }
-
-    m_mode = st.st_mode;
-    m_old_mode = st.st_mode;
-
-    auto properties = Vector<PropertyValuePair>();
-    properties.append({ "Type:", get_description(m_mode) });
-    auto parent_link = URL::create_with_file_protocol(m_parent_path);
-    properties.append(PropertyValuePair { "Location:", path, Optional(parent_link) });
-
-    if (S_ISLNK(m_mode)) {
-        auto link_destination = Core::File::read_link(path);
-        if (link_destination.is_null()) {
-            perror("readlink");
-        } else {
-            auto link_directory = LexicalPath(link_destination);
-            ASSERT(link_directory.is_valid());
-            auto link_parent = URL::create_with_file_protocol(link_directory.dirname());
-            properties.append({ "Link target:", link_destination, Optional(link_parent) });
-        }
-    }
-
-    properties.append({ "Size:", String::formatted("{} bytes", st.st_size) });
-    properties.append({ "Owner:", String::formatted("{} ({})", owner_name, st.st_uid) });
-    properties.append({ "Group:", String::formatted("{} ({})", group_name, st.st_gid) });
-    properties.append({ "Created at:", GUI::FileSystemModel::timestamp_string(st.st_ctime) });
-    properties.append({ "Last modified:", GUI::FileSystemModel::timestamp_string(st.st_mtime) });
-
-    make_property_value_pairs(properties, general_tab);
-
-    general_tab.add<GUI::SeparatorWidget>(Gfx::Orientation::Horizontal);
-
-    make_permission_checkboxes(general_tab, { S_IRUSR, S_IWUSR, S_IXUSR }, "Owner:", m_mode);
-    make_permission_checkboxes(general_tab, { S_IRGRP, S_IWGRP, S_IXGRP }, "Group:", m_mode);
-    make_permission_checkboxes(general_tab, { S_IROTH, S_IWOTH, S_IXOTH }, "Others:", m_mode);
-
-    general_tab.layout()->add_spacer();
-
-    auto& button_widget = main_widget.add<GUI::Widget>();
-    button_widget.set_layout<GUI::HorizontalBoxLayout>();
-    button_widget.set_fixed_height(24);
-    button_widget.layout()->set_spacing(5);
-
-    button_widget.layout()->add_spacer();
-
-    make_button("OK", button_widget).on_click = [this](auto) {
-        if (apply_changes())
-            close();
-    };
-    make_button("Cancel", button_widget).on_click = [this](auto) {
-        close();
-    };
-
-    m_apply_button = make_button("Apply", button_widget);
-    m_apply_button->on_click = [this](auto) { apply_changes(); };
-    m_apply_button->set_enabled(false);
-
-    update();
-}
-
-PropertiesWindow::~PropertiesWindow()
-{
-}
-
-void PropertiesWindow::update()
-{
-    m_icon->set_bitmap(GUI::FileIconProvider::icon_for_path(make_full_path(m_name), m_mode).bitmap_for_size(32));
-    set_title(String::formatted("{} - Properties", m_name));
-}
-
-void PropertiesWindow::permission_changed(mode_t mask, bool set)
-{
-    if (set) {
-        m_mode |= mask;
-    } else {
-        m_mode &= ~mask;
-    }
-
-    m_permissions_dirty = m_mode != m_old_mode;
-    m_apply_button->set_enabled(m_name_dirty || m_permissions_dirty);
-}
-
-String PropertiesWindow::make_full_path(const String& name)
-{
-    return String::formatted("{}/{}", m_parent_path, name);
-}
-
-bool PropertiesWindow::apply_changes()
-{
-    if (m_name_dirty) {
-        String new_name = m_name_box->text();
-        String new_file = make_full_path(new_name).characters();
-
-        if (GUI::FilePicker::file_exists(new_file)) {
-            GUI::MessageBox::show(this, String::formatted("A file \"{}\" already exists!", new_name), "Error", GUI::MessageBox::Type::Error);
-            return false;
-        }
-
-        if (rename(make_full_path(m_name).characters(), new_file.characters())) {
-            GUI::MessageBox::show(this, String::formatted("Could not rename file: {}!", strerror(errno)), "Error", GUI::MessageBox::Type::Error);
-            return false;
-        }
-
-        m_name = new_name;
-        m_name_dirty = false;
-        update();
-    }
-
-    if (m_permissions_dirty) {
-        if (chmod(make_full_path(m_name).characters(), m_mode)) {
-            GUI::MessageBox::show(this, String::formatted("Could not update permissions: {}!", strerror(errno)), "Error", GUI::MessageBox::Type::Error);
-            return false;
-        }
-
-        m_old_mode = m_mode;
-        m_permissions_dirty = false;
-    }
-
-    update();
-    m_apply_button->set_enabled(false);
-    return true;
-}
-
-void PropertiesWindow::make_permission_checkboxes(GUI::Widget& parent, PermissionMasks masks, String label_string, mode_t mode)
-{
-    auto& widget = parent.add<GUI::Widget>();
-    widget.set_layout<GUI::HorizontalBoxLayout>();
-    widget.set_fixed_height(16);
-    widget.layout()->set_spacing(10);
-
-    auto& label = widget.add<GUI::Label>(label_string);
-    label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-
-    struct stat st;
-    if (lstat(m_path.characters(), &st)) {
-        perror("stat");
-        return;
-    }
-
-    auto can_edit_checkboxes = st.st_uid == getuid();
-
-    auto& box_read = widget.add<GUI::CheckBox>("Read");
-    box_read.set_checked(mode & masks.read);
-    box_read.on_checked = [&, masks](bool checked) { permission_changed(masks.read, checked); };
-    box_read.set_enabled(can_edit_checkboxes);
-
-    auto& box_write = widget.add<GUI::CheckBox>("Write");
-    box_write.set_checked(mode & masks.write);
-    box_write.on_checked = [&, masks](bool checked) { permission_changed(masks.write, checked); };
-    box_write.set_enabled(can_edit_checkboxes);
-
-    auto& box_execute = widget.add<GUI::CheckBox>("Execute");
-    box_execute.set_checked(mode & masks.execute);
-    box_execute.on_checked = [&, masks](bool checked) { permission_changed(masks.execute, checked); };
-    box_execute.set_enabled(can_edit_checkboxes);
-}
-
-void PropertiesWindow::make_property_value_pairs(const Vector<PropertyValuePair>& pairs, GUI::Widget& parent)
-{
-    int max_width = 0;
-    Vector<NonnullRefPtr<GUI::Label>> property_labels;
-
-    property_labels.ensure_capacity(pairs.size());
-    for (auto pair : pairs) {
-        auto& label_container = parent.add<GUI::Widget>();
-        label_container.set_layout<GUI::HorizontalBoxLayout>();
-        label_container.set_fixed_height(14);
-        label_container.layout()->set_spacing(12);
-
-        auto& label_property = label_container.add<GUI::Label>(pair.property);
-        label_property.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-
-        if (!pair.link.has_value()) {
-            label_container.add<GUI::Label>(pair.value).set_text_alignment(Gfx::TextAlignment::CenterLeft);
-        } else {
-            auto& link = label_container.add<GUI::LinkLabel>(pair.value);
-            link.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-            link.on_click = [pair]() {
-                Desktop::Launcher::open(pair.link.value());
-            };
-        }
-
-        max_width = max(max_width, label_property.font().width(pair.property));
-        property_labels.append(label_property);
-    }
-
-    for (auto label : property_labels)
-        label->set_fixed_width(max_width);
-}
-
-GUI::Button& PropertiesWindow::make_button(String text, GUI::Widget& parent)
-{
-    auto& button = parent.add<GUI::Button>(text);
-    button.set_fixed_size(70, 22);
-    return button;
-}
diff --git a/Applications/FileManager/PropertiesWindow.h b/Applications/FileManager/PropertiesWindow.h
deleted file mode 100644
index d2801f8049..0000000000
--- a/Applications/FileManager/PropertiesWindow.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibCore/File.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/Dialog.h>
-#include <LibGUI/FileSystemModel.h>
-#include <LibGUI/ImageWidget.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/TextBox.h>
-
-class PropertiesWindow final : public GUI::Window {
-    C_OBJECT(PropertiesWindow);
-
-public:
-    virtual ~PropertiesWindow() override;
-
-private:
-    PropertiesWindow(const String& path, bool disable_rename, Window* parent = nullptr);
-
-    struct PropertyValuePair {
-        String property;
-        String value;
-        Optional<URL> link = {};
-    };
-
-    struct PermissionMasks {
-        mode_t read;
-        mode_t write;
-        mode_t execute;
-    };
-
-    static const String get_description(const mode_t mode)
-    {
-        if (S_ISREG(mode))
-            return "File";
-        if (S_ISDIR(mode))
-            return "Directory";
-        if (S_ISLNK(mode))
-            return "Symbolic link";
-        if (S_ISCHR(mode))
-            return "Character device";
-        if (S_ISBLK(mode))
-            return "Block device";
-        if (S_ISFIFO(mode))
-            return "FIFO (named pipe)";
-        if (S_ISSOCK(mode))
-            return "Socket";
-        if (mode & S_IXUSR)
-            return "Executable";
-
-        return "Unknown";
-    }
-
-    GUI::Button& make_button(String, GUI::Widget& parent);
-    void make_property_value_pairs(const Vector<PropertyValuePair>& pairs, GUI::Widget& parent);
-    void make_permission_checkboxes(GUI::Widget& parent, PermissionMasks, String label_string, mode_t mode);
-    void permission_changed(mode_t mask, bool set);
-    bool apply_changes();
-    void update();
-    String make_full_path(const String& name);
-
-    RefPtr<GUI::Button> m_apply_button;
-    RefPtr<GUI::TextBox> m_name_box;
-    RefPtr<GUI::ImageWidget> m_icon;
-    String m_name;
-    String m_parent_path;
-    String m_path;
-    mode_t m_mode { 0 };
-    mode_t m_old_mode { 0 };
-    bool m_permissions_dirty { false };
-    bool m_name_dirty { false };
-};
diff --git a/Applications/FileManager/main.cpp b/Applications/FileManager/main.cpp
deleted file mode 100644
index 9766876f21..0000000000
--- a/Applications/FileManager/main.cpp
+++ /dev/null
@@ -1,974 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "DesktopWidget.h"
-#include "DirectoryView.h"
-#include "FileUtils.h"
-#include "PropertiesWindow.h"
-#include <AK/LexicalPath.h>
-#include <AK/StringBuilder.h>
-#include <AK/URL.h>
-#include <Applications/FileManager/FileManagerWindowGML.h>
-#include <LibCore/ConfigFile.h>
-#include <LibCore/MimeData.h>
-#include <LibCore/StandardPaths.h>
-#include <LibDesktop/Launcher.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/ActionGroup.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/BreadcrumbBar.h>
-#include <LibGUI/Clipboard.h>
-#include <LibGUI/Desktop.h>
-#include <LibGUI/FileIconProvider.h>
-#include <LibGUI/FileSystemModel.h>
-#include <LibGUI/InputBox.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/ProgressBar.h>
-#include <LibGUI/Splitter.h>
-#include <LibGUI/StatusBar.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGUI/ToolBar.h>
-#include <LibGUI/ToolBarContainer.h>
-#include <LibGUI/TreeView.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Palette.h>
-#include <pthread.h>
-#include <serenity.h>
-#include <signal.h>
-#include <spawn.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-
-using namespace FileManager;
-
-static int run_in_desktop_mode(RefPtr<Core::ConfigFile>);
-static int run_in_windowed_mode(RefPtr<Core::ConfigFile>, String initial_location);
-static void do_copy(const Vector<String>& selected_file_paths, FileUtils::FileOperation file_operation);
-static void do_paste(const String& target_directory, GUI::Window* window);
-static void do_create_link(const Vector<String>& selected_file_paths, GUI::Window* window);
-static void show_properties(const String& container_dir_path, const String& path, const Vector<String>& selected, GUI::Window* window);
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio thread shared_buffer accept unix cpath rpath wpath fattr proc exec sigaction", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    struct sigaction act;
-    memset(&act, 0, sizeof(act));
-    act.sa_flags = SA_NOCLDWAIT;
-    act.sa_handler = SIG_IGN;
-    int rc = sigaction(SIGCHLD, &act, nullptr);
-    if (rc < 0) {
-        perror("sigaction");
-        return 1;
-    }
-
-    RefPtr<Core::ConfigFile> config = Core::ConfigFile::get_for_app("FileManager");
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio thread shared_buffer accept cpath rpath wpath fattr proc exec unix", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (app->args().contains_slow("--desktop") || app->args().contains_slow("-d"))
-        return run_in_desktop_mode(move(config));
-
-    // our initial location is defined as, in order of precedence:
-    // 1. the first command-line argument (e.g. FileManager /bin)
-    // 2. the user's home directory
-    // 3. the root directory
-    String initial_location;
-
-    if (argc >= 2) {
-        char* buffer = realpath(argv[1], nullptr);
-        initial_location = buffer;
-        free(buffer);
-    }
-
-    if (initial_location.is_empty())
-        initial_location = Core::StandardPaths::home_directory();
-
-    if (initial_location.is_empty())
-        initial_location = "/";
-
-    return run_in_windowed_mode(move(config), initial_location);
-}
-
-void do_copy(const Vector<String>& selected_file_paths, FileUtils::FileOperation file_operation)
-{
-    if (selected_file_paths.is_empty())
-        ASSERT_NOT_REACHED();
-
-    StringBuilder copy_text;
-    if (file_operation == FileUtils::FileOperation::Cut) {
-        copy_text.append("#cut\n"); // This exploits the comment lines in the text/uri-list specification, which might be a bit hackish
-    }
-    for (auto& path : selected_file_paths) {
-        auto url = URL::create_with_file_protocol(path);
-        copy_text.appendff("{}\n", url);
-    }
-    GUI::Clipboard::the().set_data(copy_text.build().bytes(), "text/uri-list");
-}
-
-void do_paste(const String& target_directory, GUI::Window* window)
-{
-    auto data_and_type = GUI::Clipboard::the().data_and_type();
-    if (data_and_type.mime_type != "text/uri-list") {
-        dbgln("Cannot paste clipboard type {}", data_and_type.mime_type);
-        return;
-    }
-    auto copied_lines = String::copy(data_and_type.data).split('\n');
-    if (copied_lines.is_empty()) {
-        dbgln("No files to paste");
-        return;
-    }
-
-    bool should_delete_src = false;
-    if (copied_lines[0] == "#cut") { // cut operation encoded as a text/uri-list commen
-        should_delete_src = true;
-        copied_lines.remove(0);
-    }
-
-    for (auto& uri_as_string : copied_lines) {
-        if (uri_as_string.is_empty())
-            continue;
-        URL url = uri_as_string;
-        if (!url.is_valid() || url.protocol() != "file") {
-            dbgln("Cannot paste URI {}", uri_as_string);
-            continue;
-        }
-
-        auto new_path = String::formatted("{}/{}", target_directory, url.basename());
-        if (!FileUtils::copy_file_or_directory(url.path(), new_path)) {
-            auto error_message = String::formatted("Could not paste {}.", url.path());
-            GUI::MessageBox::show(window, error_message, "File Manager", GUI::MessageBox::Type::Error);
-        } else if (should_delete_src) {
-            FileUtils::delete_path(url.path(), window);
-        }
-    }
-}
-
-void do_create_link(const Vector<String>& selected_file_paths, GUI::Window* window)
-{
-    auto path = selected_file_paths.first();
-    auto destination = String::formatted("{}/{}", Core::StandardPaths::desktop_directory(), LexicalPath { path }.basename());
-    if (!FileUtils::link_file(path, destination)) {
-        GUI::MessageBox::show(window, "Could not create desktop shortcut", "File Manager",
-            GUI::MessageBox::Type::Error);
-    }
-}
-
-void show_properties(const String& container_dir_path, const String& path, const Vector<String>& selected, GUI::Window* window)
-{
-    RefPtr<PropertiesWindow> properties;
-    if (selected.is_empty()) {
-        properties = window->add<PropertiesWindow>(path, true);
-    } else {
-        properties = window->add<PropertiesWindow>(selected.first(), access(container_dir_path.characters(), W_OK) != 0);
-    }
-    properties->on_close = [properties = properties.ptr()] {
-        properties->remove_from_parent();
-    };
-    properties->center_on_screen();
-    properties->show();
-}
-
-int run_in_desktop_mode([[maybe_unused]] RefPtr<Core::ConfigFile> config)
-{
-    static constexpr const char* process_name = "FileManager (Desktop)";
-    set_process_name(process_name, strlen(process_name));
-    pthread_setname_np(pthread_self(), process_name);
-
-    auto window = GUI::Window::construct();
-    window->set_title("Desktop Manager");
-    window->set_window_type(GUI::WindowType::Desktop);
-    window->set_has_alpha_channel(true);
-
-    auto& desktop_widget = window->set_main_widget<FileManager::DesktopWidget>();
-    desktop_widget.set_layout<GUI::VerticalBoxLayout>();
-
-    [[maybe_unused]] auto& directory_view = desktop_widget.add<DirectoryView>(DirectoryView::Mode::Desktop);
-
-    auto copy_action = GUI::CommonActions::make_copy_action(
-        [&](auto&) {
-            auto paths = directory_view.selected_file_paths();
-
-            if (paths.is_empty())
-                ASSERT_NOT_REACHED();
-
-            do_copy(paths, FileUtils::FileOperation::Copy);
-        },
-        window);
-    copy_action->set_enabled(false);
-
-    auto cut_action = GUI::CommonActions::make_cut_action(
-        [&](auto&) {
-            auto paths = directory_view.selected_file_paths();
-
-            if (paths.is_empty())
-                ASSERT_NOT_REACHED();
-
-            do_copy(paths, FileUtils::FileOperation::Cut);
-        },
-        window);
-    cut_action->set_enabled(false);
-
-    directory_view.on_selection_change = [&](const GUI::AbstractView& view) {
-        copy_action->set_enabled(!view.selection().is_empty());
-        cut_action->set_enabled(!view.selection().is_empty());
-    };
-
-    auto properties_action
-        = GUI::Action::create(
-            "Properties", { Mod_Alt, Key_Return }, Gfx::Bitmap::load_from_file("/res/icons/16x16/properties.png"), [&](const GUI::Action&) {
-                String path = directory_view.path();
-                Vector<String> selected = directory_view.selected_file_paths();
-
-                show_properties(path, path, selected, directory_view.window());
-            },
-            window);
-
-    auto paste_action = GUI::CommonActions::make_paste_action(
-        [&](const GUI::Action&) {
-            do_paste(directory_view.path(), directory_view.window());
-        },
-        window);
-    paste_action->set_enabled(GUI::Clipboard::the().mime_type() == "text/uri-list" && access(directory_view.path().characters(), W_OK) == 0);
-
-    GUI::Clipboard::the().on_change = [&](const String& data_type) {
-        paste_action->set_enabled(data_type == "text/uri-list" && access(directory_view.path().characters(), W_OK) == 0);
-    };
-
-    auto desktop_view_context_menu = GUI::Menu::construct("Directory View");
-
-    auto file_manager_action = GUI::Action::create("Show in File Manager", {}, Gfx::Bitmap::load_from_file("/res/icons/16x16/filetype-folder.png"), [&](const GUI::Action&) {
-        Desktop::Launcher::open(URL::create_with_file_protocol(directory_view.path()));
-    });
-
-    auto display_properties_action = GUI::Action::create("Display Settings", {}, Gfx::Bitmap::load_from_file("/res/icons/16x16/app-display-settings.png"), [&](const GUI::Action&) {
-        Desktop::Launcher::open(URL::create_with_file_protocol("/bin/DisplaySettings"));
-    });
-
-    desktop_view_context_menu->add_action(directory_view.mkdir_action());
-    desktop_view_context_menu->add_action(directory_view.touch_action());
-    desktop_view_context_menu->add_action(paste_action);
-    desktop_view_context_menu->add_separator();
-    desktop_view_context_menu->add_action(file_manager_action);
-    desktop_view_context_menu->add_action(directory_view.open_terminal_action());
-    desktop_view_context_menu->add_separator();
-    desktop_view_context_menu->add_action(display_properties_action);
-
-    auto desktop_context_menu = GUI::Menu::construct("Directory View Directory");
-    desktop_context_menu->add_action(copy_action);
-    desktop_context_menu->add_action(cut_action);
-    desktop_context_menu->add_action(paste_action);
-    desktop_context_menu->add_action(directory_view.delete_action());
-    desktop_context_menu->add_separator();
-    desktop_context_menu->add_action(properties_action);
-
-    directory_view.on_context_menu_request = [&](const GUI::ModelIndex& index, const GUI::ContextMenuEvent& event) {
-        if (!index.is_valid())
-            desktop_view_context_menu->popup(event.screen_position());
-        else
-            desktop_context_menu->popup(event.screen_position());
-    };
-
-    auto wm_config = Core::ConfigFile::get_for_app("WindowManager");
-    auto selected_wallpaper = wm_config->read_entry("Background", "Wallpaper", "");
-    if (!selected_wallpaper.is_empty()) {
-        GUI::Desktop::the().set_wallpaper(selected_wallpaper, false);
-    }
-
-    window->show();
-    return GUI::Application::the()->exec();
-}
-
-int run_in_windowed_mode(RefPtr<Core::ConfigFile> config, String initial_location)
-{
-    auto window = GUI::Window::construct();
-    window->set_title("File Manager");
-
-    auto left = config->read_num_entry("Window", "Left", 150);
-    auto top = config->read_num_entry("Window", "Top", 75);
-    auto width = config->read_num_entry("Window", "Width", 640);
-    auto height = config->read_num_entry("Window", "Height", 480);
-    window->set_rect({ left, top, width, height });
-
-    auto& widget = window->set_main_widget<GUI::Widget>();
-
-    widget.load_from_gml(file_manager_window_gml);
-
-    auto& main_toolbar = *widget.find_descendant_of_type_named<GUI::ToolBar>("main_toolbar");
-    auto& location_toolbar = *widget.find_descendant_of_type_named<GUI::ToolBar>("location_toolbar");
-    location_toolbar.layout()->set_margins({ 6, 3, 6, 3 });
-
-    auto& location_textbox = *widget.find_descendant_of_type_named<GUI::TextBox>("location_textbox");
-
-    auto& breadcrumb_toolbar = *widget.find_descendant_of_type_named<GUI::ToolBar>("breadcrumb_toolbar");
-    breadcrumb_toolbar.layout()->set_margins({});
-    auto& breadcrumb_bar = *widget.find_descendant_of_type_named<GUI::BreadcrumbBar>("breadcrumb_bar");
-
-    location_textbox.on_focusout = [&] {
-        location_toolbar.set_visible(false);
-        breadcrumb_toolbar.set_visible(true);
-    };
-
-    auto& splitter = *widget.find_descendant_of_type_named<GUI::HorizontalSplitter>("splitter");
-    auto& tree_view = *widget.find_descendant_of_type_named<GUI::TreeView>("tree_view");
-
-    auto directories_model = GUI::FileSystemModel::create({}, GUI::FileSystemModel::Mode::DirectoriesOnly);
-    tree_view.set_model(directories_model);
-    tree_view.set_column_hidden(GUI::FileSystemModel::Column::Icon, true);
-    tree_view.set_column_hidden(GUI::FileSystemModel::Column::Size, true);
-    tree_view.set_column_hidden(GUI::FileSystemModel::Column::Owner, true);
-    tree_view.set_column_hidden(GUI::FileSystemModel::Column::Group, true);
-    tree_view.set_column_hidden(GUI::FileSystemModel::Column::Permissions, true);
-    tree_view.set_column_hidden(GUI::FileSystemModel::Column::ModificationTime, true);
-    tree_view.set_column_hidden(GUI::FileSystemModel::Column::Inode, true);
-    tree_view.set_column_hidden(GUI::FileSystemModel::Column::SymlinkTarget, true);
-    bool is_reacting_to_tree_view_selection_change = false;
-
-    auto& directory_view = splitter.add<DirectoryView>(DirectoryView::Mode::Normal);
-
-    location_textbox.on_escape_pressed = [&] {
-        directory_view.set_focus(true);
-    };
-
-    // Open the root directory. FIXME: This is awkward.
-    tree_view.toggle_index(directories_model->index(0, 0, {}));
-
-    auto& statusbar = *widget.find_descendant_of_type_named<GUI::StatusBar>("statusbar");
-
-    auto& progressbar = *widget.find_descendant_of_type_named<GUI::ProgressBar>("progressbar");
-    progressbar.set_format(GUI::ProgressBar::Format::ValueSlashMax);
-    progressbar.set_frame_shape(Gfx::FrameShape::Panel);
-    progressbar.set_frame_shadow(Gfx::FrameShadow::Sunken);
-    progressbar.set_frame_thickness(1);
-
-    location_textbox.on_return_pressed = [&] {
-        directory_view.open(location_textbox.text());
-    };
-
-    auto refresh_tree_view = [&] {
-        directories_model->update();
-
-        auto current_path = directory_view.path();
-
-        struct stat st;
-        // If the directory no longer exists, we find a parent that does.
-        while (stat(current_path.characters(), &st) != 0) {
-            directory_view.open_parent_directory();
-            current_path = directory_view.path();
-            if (current_path == directories_model->root_path()) {
-                break;
-            }
-        }
-
-        // Reselect the existing folder in the tree.
-        auto new_index = directories_model->index(current_path, GUI::FileSystemModel::Column::Name);
-        if (new_index.is_valid()) {
-            tree_view.expand_all_parents_of(new_index);
-            tree_view.set_cursor(new_index, GUI::AbstractView::SelectionUpdate::Set, true);
-        }
-
-        directory_view.refresh();
-    };
-
-    auto directory_context_menu = GUI::Menu::construct("Directory View Directory");
-    auto directory_view_context_menu = GUI::Menu::construct("Directory View");
-    auto tree_view_directory_context_menu = GUI::Menu::construct("Tree View Directory");
-    auto tree_view_context_menu = GUI::Menu::construct("Tree View");
-
-    auto open_parent_directory_action = GUI::Action::create("Open parent directory", { Mod_Alt, Key_Up }, Gfx::Bitmap::load_from_file("/res/icons/16x16/open-parent-directory.png"), [&](const GUI::Action&) {
-        directory_view.open_parent_directory();
-    });
-
-    RefPtr<GUI::Action> view_as_table_action;
-    RefPtr<GUI::Action> view_as_icons_action;
-    RefPtr<GUI::Action> view_as_columns_action;
-
-    view_as_icons_action = GUI::Action::create_checkable(
-        "Icon view", { Mod_Ctrl, KeyCode::Key_1 }, Gfx::Bitmap::load_from_file("/res/icons/16x16/icon-view.png"), [&](const GUI::Action&) {
-            directory_view.set_view_mode(DirectoryView::ViewMode::Icon);
-            config->write_entry("DirectoryView", "ViewMode", "Icon");
-            config->sync();
-        },
-        window);
-
-    view_as_table_action = GUI::Action::create_checkable(
-        "Table view", { Mod_Ctrl, KeyCode::Key_2 }, Gfx::Bitmap::load_from_file("/res/icons/16x16/table-view.png"), [&](const GUI::Action&) {
-            directory_view.set_view_mode(DirectoryView::ViewMode::Table);
-            config->write_entry("DirectoryView", "ViewMode", "Table");
-            config->sync();
-        },
-        window);
-
-    view_as_columns_action = GUI::Action::create_checkable(
-        "Columns view", { Mod_Ctrl, KeyCode::Key_3 }, Gfx::Bitmap::load_from_file("/res/icons/16x16/columns-view.png"), [&](const GUI::Action&) {
-            directory_view.set_view_mode(DirectoryView::ViewMode::Columns);
-            config->write_entry("DirectoryView", "ViewMode", "Columns");
-            config->sync();
-        },
-        window);
-
-    auto view_type_action_group = make<GUI::ActionGroup>();
-    view_type_action_group->set_exclusive(true);
-    view_type_action_group->add_action(*view_as_icons_action);
-    view_type_action_group->add_action(*view_as_table_action);
-    view_type_action_group->add_action(*view_as_columns_action);
-
-    auto tree_view_selected_file_paths = [&] {
-        Vector<String> paths;
-        auto& view = tree_view;
-        view.selection().for_each_index([&](const GUI::ModelIndex& index) {
-            paths.append(directories_model->full_path(index));
-        });
-        return paths;
-    };
-
-    auto select_all_action = GUI::Action::create("Select all", { Mod_Ctrl, KeyCode::Key_A }, [&](const GUI::Action&) {
-        directory_view.current_view().select_all();
-    });
-
-    auto copy_action = GUI::CommonActions::make_copy_action(
-        [&](auto&) {
-            auto paths = directory_view.selected_file_paths();
-
-            if (paths.is_empty())
-                paths = tree_view_selected_file_paths();
-
-            if (paths.is_empty())
-                ASSERT_NOT_REACHED();
-
-            do_copy(paths, FileUtils::FileOperation::Copy);
-            refresh_tree_view();
-        },
-        window);
-    copy_action->set_enabled(false);
-
-    auto cut_action = GUI::CommonActions::make_cut_action(
-        [&](auto&) {
-            auto paths = directory_view.selected_file_paths();
-
-            if (paths.is_empty())
-                paths = tree_view_selected_file_paths();
-
-            if (paths.is_empty())
-                ASSERT_NOT_REACHED();
-
-            do_copy(paths, FileUtils::FileOperation::Cut);
-            refresh_tree_view();
-        },
-        window);
-    cut_action->set_enabled(false);
-
-    auto shortcut_action
-        = GUI::Action::create(
-            "Create desktop shortcut",
-            {},
-            Gfx::Bitmap::load_from_file("/res/icons/16x16/filetype-symlink.png"),
-            [&](const GUI::Action&) {
-                auto paths = directory_view.selected_file_paths();
-                if (paths.is_empty()) {
-                    return;
-                }
-                do_create_link(paths, directory_view.window());
-            },
-            window);
-
-    auto properties_action
-        = GUI::Action::create(
-            "Properties", { Mod_Alt, Key_Return }, Gfx::Bitmap::load_from_file("/res/icons/16x16/properties.png"), [&](const GUI::Action& action) {
-                String container_dir_path;
-                String path;
-                Vector<String> selected;
-                if (action.activator() == directory_context_menu || directory_view.active_widget()->is_focused()) {
-                    path = directory_view.path();
-                    container_dir_path = path;
-                    selected = directory_view.selected_file_paths();
-                } else {
-                    path = directories_model->full_path(tree_view.selection().first());
-                    container_dir_path = LexicalPath(path).basename();
-                    selected = tree_view_selected_file_paths();
-                }
-
-                show_properties(container_dir_path, path, selected, directory_view.window());
-            },
-            window);
-
-    auto paste_action = GUI::CommonActions::make_paste_action(
-        [&](const GUI::Action& action) {
-            String target_directory;
-            if (action.activator() == directory_context_menu)
-                target_directory = directory_view.selected_file_paths()[0];
-            else
-                target_directory = directory_view.path();
-            do_paste(target_directory, directory_view.window());
-            refresh_tree_view();
-        },
-        window);
-
-    auto folder_specific_paste_action = GUI::CommonActions::make_paste_action(
-        [&](const GUI::Action& action) {
-            String target_directory;
-            if (action.activator() == directory_context_menu)
-                target_directory = directory_view.selected_file_paths()[0];
-            else
-                target_directory = directory_view.path();
-            do_paste(target_directory, directory_view.window());
-            refresh_tree_view();
-        },
-        window);
-
-    auto go_back_action = GUI::CommonActions::make_go_back_action(
-        [&](auto&) {
-            directory_view.open_previous_directory();
-        },
-        window);
-
-    auto go_forward_action = GUI::CommonActions::make_go_forward_action(
-        [&](auto&) {
-            directory_view.open_next_directory();
-        },
-        window);
-
-    auto go_home_action = GUI::CommonActions::make_go_home_action(
-        [&](auto&) {
-            directory_view.open(Core::StandardPaths::home_directory());
-        },
-        window);
-
-    GUI::Clipboard::the().on_change = [&](const String& data_type) {
-        auto current_location = directory_view.path();
-        paste_action->set_enabled(data_type == "text/uri-list" && access(current_location.characters(), W_OK) == 0);
-    };
-
-    auto tree_view_delete_action = GUI::CommonActions::make_delete_action(
-        [&](auto&) {
-            FileUtils::delete_paths(tree_view_selected_file_paths(), true, window);
-            refresh_tree_view();
-        },
-        &tree_view);
-
-    // This is a little awkward. The menu action does something different depending on which view has focus.
-    // It would be nice to find a good abstraction for this instead of creating a branching action like this.
-    auto focus_dependent_delete_action = GUI::CommonActions::make_delete_action([&](auto&) {
-        if (tree_view.is_focused())
-            tree_view_delete_action->activate();
-        else
-            directory_view.delete_action().activate();
-        refresh_tree_view();
-    });
-    focus_dependent_delete_action->set_enabled(false);
-
-    auto mkdir_action = GUI::Action::create("New directory...", { Mod_Ctrl | Mod_Shift, Key_N }, Gfx::Bitmap::load_from_file("/res/icons/16x16/mkdir.png"), [&](const GUI::Action&) {
-        directory_view.mkdir_action().activate();
-        refresh_tree_view();
-    });
-
-    auto touch_action = GUI::Action::create("New file...", { Mod_Ctrl | Mod_Shift, Key_F }, Gfx::Bitmap::load_from_file("/res/icons/16x16/new.png"), [&](const GUI::Action&) {
-        directory_view.touch_action().activate();
-        refresh_tree_view();
-    });
-
-    auto menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = menubar->add_menu("File Manager");
-    app_menu.add_action(mkdir_action);
-    app_menu.add_action(touch_action);
-    app_menu.add_action(copy_action);
-    app_menu.add_action(cut_action);
-    app_menu.add_action(paste_action);
-    app_menu.add_action(focus_dependent_delete_action);
-    app_menu.add_action(directory_view.open_terminal_action());
-    app_menu.add_separator();
-    app_menu.add_action(properties_action);
-    app_menu.add_separator();
-    app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
-        GUI::Application::the()->quit();
-    }));
-
-    auto action_show_dotfiles = GUI::Action::create_checkable("Show dotfiles", { Mod_Ctrl, Key_H }, [&](auto& action) {
-        directory_view.set_should_show_dotfiles(action.is_checked());
-        refresh_tree_view();
-    });
-
-    auto& view_menu = menubar->add_menu("View");
-    view_menu.add_action(*view_as_icons_action);
-    view_menu.add_action(*view_as_table_action);
-    view_menu.add_action(*view_as_columns_action);
-    view_menu.add_separator();
-    view_menu.add_action(action_show_dotfiles);
-
-    auto go_to_location_action = GUI::Action::create("Go to location...", { Mod_Ctrl, Key_L }, [&](auto&) {
-        location_toolbar.set_visible(true);
-        breadcrumb_toolbar.set_visible(false);
-        location_textbox.select_all();
-        location_textbox.set_focus(true);
-    });
-
-    auto& go_menu = menubar->add_menu("Go");
-    go_menu.add_action(go_back_action);
-    go_menu.add_action(go_forward_action);
-    go_menu.add_action(open_parent_directory_action);
-    go_menu.add_action(go_home_action);
-    go_menu.add_action(go_to_location_action);
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("File Manager", GUI::Icon::default_icon("filetype-folder")));
-
-    GUI::Application::the()->set_menubar(move(menubar));
-
-    main_toolbar.add_action(go_back_action);
-    main_toolbar.add_action(go_forward_action);
-    main_toolbar.add_action(open_parent_directory_action);
-    main_toolbar.add_action(go_home_action);
-
-    main_toolbar.add_separator();
-    main_toolbar.add_action(mkdir_action);
-    main_toolbar.add_action(touch_action);
-    main_toolbar.add_action(copy_action);
-    main_toolbar.add_action(cut_action);
-    main_toolbar.add_action(paste_action);
-    main_toolbar.add_action(focus_dependent_delete_action);
-    main_toolbar.add_action(directory_view.open_terminal_action());
-
-    main_toolbar.add_separator();
-    main_toolbar.add_action(*view_as_icons_action);
-    main_toolbar.add_action(*view_as_table_action);
-    main_toolbar.add_action(*view_as_columns_action);
-
-    directory_view.on_path_change = [&](const String& new_path, bool can_write_in_path) {
-        auto icon = GUI::FileIconProvider::icon_for_path(new_path);
-        auto* bitmap = icon.bitmap_for_size(16);
-        window->set_icon(bitmap);
-        location_textbox.set_icon(bitmap);
-
-        window->set_title(String::formatted("{} - File Manager", new_path));
-        location_textbox.set_text(new_path);
-
-        {
-            LexicalPath lexical_path(new_path);
-
-            auto segment_index_of_new_path_in_breadcrumb_bar = [&]() -> Optional<size_t> {
-                for (size_t i = 0; i < breadcrumb_bar.segment_count(); ++i) {
-                    if (breadcrumb_bar.segment_data(i) == new_path)
-                        return i;
-                }
-                return {};
-            }();
-
-            if (segment_index_of_new_path_in_breadcrumb_bar.has_value()) {
-                breadcrumb_bar.set_selected_segment(segment_index_of_new_path_in_breadcrumb_bar.value());
-            } else {
-                breadcrumb_bar.clear_segments();
-
-                breadcrumb_bar.append_segment("/", GUI::FileIconProvider::icon_for_path("/").bitmap_for_size(16), "/");
-                StringBuilder builder;
-
-                for (auto& part : lexical_path.parts()) {
-                    // NOTE: We rebuild the path as we go, so we have something to pass to GUI::FileIconProvider.
-                    builder.append('/');
-                    builder.append(part);
-
-                    breadcrumb_bar.append_segment(part, GUI::FileIconProvider::icon_for_path(builder.string_view()).bitmap_for_size(16), builder.string_view());
-                }
-
-                breadcrumb_bar.set_selected_segment(breadcrumb_bar.segment_count() - 1);
-
-                breadcrumb_bar.on_segment_click = [&](size_t segment_index) {
-                    directory_view.open(breadcrumb_bar.segment_data(segment_index));
-                };
-            }
-        }
-
-        if (!is_reacting_to_tree_view_selection_change) {
-            auto new_index = directories_model->index(new_path, GUI::FileSystemModel::Column::Name);
-            if (new_index.is_valid()) {
-                tree_view.expand_all_parents_of(new_index);
-                tree_view.set_cursor(new_index, GUI::AbstractView::SelectionUpdate::Set);
-            }
-        }
-
-        struct stat st;
-        if (lstat(new_path.characters(), &st)) {
-            perror("stat");
-            return;
-        }
-
-        paste_action->set_enabled(can_write_in_path && GUI::Clipboard::the().mime_type() == "text/uri-list");
-        go_forward_action->set_enabled(directory_view.path_history_position() < directory_view.path_history_size() - 1);
-        go_back_action->set_enabled(directory_view.path_history_position() > 0);
-        open_parent_directory_action->set_enabled(new_path != "/");
-    };
-
-    directory_view.on_accepted_drop = [&]() {
-        refresh_tree_view();
-    };
-
-    directory_view.on_status_message = [&](const StringView& message) {
-        statusbar.set_text(message);
-    };
-
-    directory_view.on_thumbnail_progress = [&](int done, int total) {
-        if (done == total) {
-            progressbar.set_visible(false);
-            return;
-        }
-        progressbar.set_range(0, total);
-        progressbar.set_value(done);
-        progressbar.set_visible(true);
-    };
-
-    directory_view.on_selection_change = [&](GUI::AbstractView& view) {
-        auto& selection = view.selection();
-        copy_action->set_enabled(!selection.is_empty());
-        cut_action->set_enabled(!selection.is_empty());
-        focus_dependent_delete_action->set_enabled((!tree_view.selection().is_empty() && tree_view.is_focused())
-            || !directory_view.current_view().selection().is_empty());
-    };
-
-    directory_context_menu->add_action(copy_action);
-    directory_context_menu->add_action(cut_action);
-    directory_context_menu->add_action(folder_specific_paste_action);
-    directory_context_menu->add_action(directory_view.delete_action());
-    directory_context_menu->add_action(shortcut_action);
-    directory_context_menu->add_separator();
-    directory_context_menu->add_action(properties_action);
-
-    directory_view_context_menu->add_action(mkdir_action);
-    directory_view_context_menu->add_action(touch_action);
-    directory_view_context_menu->add_action(paste_action);
-    directory_view_context_menu->add_action(directory_view.open_terminal_action());
-    directory_view_context_menu->add_separator();
-    directory_view_context_menu->add_action(action_show_dotfiles);
-    directory_view_context_menu->add_separator();
-    directory_view_context_menu->add_action(properties_action);
-
-    tree_view_directory_context_menu->add_action(copy_action);
-    tree_view_directory_context_menu->add_action(cut_action);
-    tree_view_directory_context_menu->add_action(paste_action);
-    tree_view_directory_context_menu->add_action(tree_view_delete_action);
-    tree_view_directory_context_menu->add_separator();
-    tree_view_directory_context_menu->add_action(properties_action);
-    tree_view_directory_context_menu->add_separator();
-    tree_view_directory_context_menu->add_action(mkdir_action);
-    tree_view_directory_context_menu->add_action(touch_action);
-
-    RefPtr<GUI::Menu> file_context_menu;
-    NonnullRefPtrVector<LauncherHandler> current_file_handlers;
-    RefPtr<GUI::Action> file_context_menu_action_default_action;
-
-    directory_view.on_context_menu_request = [&](const GUI::ModelIndex& index, const GUI::ContextMenuEvent& event) {
-        if (index.is_valid()) {
-            auto& node = directory_view.node(index);
-
-            if (node.is_directory()) {
-                auto should_get_enabled = access(node.full_path().characters(), W_OK) == 0 && GUI::Clipboard::the().mime_type() == "text/uri-list";
-                folder_specific_paste_action->set_enabled(should_get_enabled);
-                directory_context_menu->popup(event.screen_position());
-            } else {
-                auto full_path = node.full_path();
-                current_file_handlers = directory_view.get_launch_handlers(full_path);
-
-                file_context_menu = GUI::Menu::construct("Directory View File");
-                file_context_menu->add_action(copy_action);
-                file_context_menu->add_action(cut_action);
-                file_context_menu->add_action(paste_action);
-                file_context_menu->add_action(directory_view.delete_action());
-                file_context_menu->add_action(shortcut_action);
-
-                file_context_menu->add_separator();
-                bool added_open_menu_items = false;
-                auto default_file_handler = directory_view.get_default_launch_handler(current_file_handlers);
-                if (default_file_handler) {
-                    auto file_open_action = default_file_handler->create_launch_action([&, full_path = move(full_path)](auto& launcher_handler) {
-                        directory_view.launch(URL::create_with_file_protocol(full_path), launcher_handler);
-                    });
-                    if (default_file_handler->details().launcher_type == Desktop::Launcher::LauncherType::Application)
-                        file_open_action->set_text(String::formatted("Run {}", file_open_action->text()));
-                    else
-                        file_open_action->set_text(String::formatted("Open in {}", file_open_action->text()));
-
-                    file_context_menu_action_default_action = file_open_action;
-
-                    file_context_menu->add_action(move(file_open_action));
-                    added_open_menu_items = true;
-                } else {
-                    file_context_menu_action_default_action.clear();
-                }
-
-                if (current_file_handlers.size() > 1) {
-                    added_open_menu_items = true;
-                    auto& file_open_with_menu = file_context_menu->add_submenu("Open with");
-                    for (auto& handler : current_file_handlers) {
-                        if (&handler == default_file_handler.ptr())
-                            continue;
-                        file_open_with_menu.add_action(handler.create_launch_action([&, full_path = move(full_path)](auto& launcher_handler) {
-                            directory_view.launch(URL::create_with_file_protocol(full_path), launcher_handler);
-                        }));
-                    }
-                }
-
-                if (added_open_menu_items)
-                    file_context_menu->add_separator();
-
-                file_context_menu->add_action(properties_action);
-                file_context_menu->popup(event.screen_position(), file_context_menu_action_default_action);
-            }
-        } else {
-            directory_view_context_menu->popup(event.screen_position());
-        }
-    };
-
-    tree_view.on_selection = [&](const GUI::ModelIndex& index) {
-        if (directories_model->m_previously_selected_index.is_valid())
-            directories_model->update_node_on_selection(directories_model->m_previously_selected_index, false);
-
-        directories_model->update_node_on_selection(index, true);
-        directories_model->m_previously_selected_index = index;
-    };
-
-    tree_view.on_selection_change = [&] {
-        focus_dependent_delete_action->set_enabled((!tree_view.selection().is_empty() && tree_view.is_focused())
-            || !directory_view.current_view().selection().is_empty());
-
-        if (tree_view.selection().is_empty())
-            return;
-        auto path = directories_model->full_path(tree_view.selection().first());
-        if (directory_view.path() == path)
-            return;
-        TemporaryChange change(is_reacting_to_tree_view_selection_change, true);
-        directory_view.open(path);
-        copy_action->set_enabled(!tree_view.selection().is_empty());
-        cut_action->set_enabled(!tree_view.selection().is_empty());
-        directory_view.delete_action().set_enabled(!tree_view.selection().is_empty());
-    };
-
-    tree_view.on_focus_change = [&]([[maybe_unused]] const bool has_focus, [[maybe_unused]] const GUI::FocusSource source) {
-        focus_dependent_delete_action->set_enabled((!tree_view.selection().is_empty() && has_focus)
-            || !directory_view.current_view().selection().is_empty());
-    };
-
-    tree_view.on_context_menu_request = [&](const GUI::ModelIndex& index, const GUI::ContextMenuEvent& event) {
-        if (index.is_valid()) {
-            tree_view_directory_context_menu->popup(event.screen_position());
-        }
-    };
-
-    auto copy_urls_to_directory = [&](const Vector<URL>& urls, const String& directory) {
-        if (urls.is_empty()) {
-            dbgln("No files to copy");
-            return;
-        }
-        bool had_accepted_copy = false;
-        for (auto& url_to_copy : urls) {
-            if (!url_to_copy.is_valid() || url_to_copy.path() == directory)
-                continue;
-            auto new_path = String::formatted("{}/{}", directory, LexicalPath(url_to_copy.path()).basename());
-            if (url_to_copy.path() == new_path)
-                continue;
-
-            if (!FileUtils::copy_file_or_directory(url_to_copy.path(), new_path)) {
-                auto error_message = String::formatted("Could not copy {} into {}.", url_to_copy.to_string(), new_path);
-                GUI::MessageBox::show(window, error_message, "File Manager", GUI::MessageBox::Type::Error);
-            } else {
-                had_accepted_copy = true;
-            }
-        }
-        if (had_accepted_copy)
-            refresh_tree_view();
-    };
-
-    breadcrumb_bar.on_segment_drop = [&](size_t segment_index, const GUI::DropEvent& event) {
-        if (!event.mime_data().has_urls())
-            return;
-        copy_urls_to_directory(event.mime_data().urls(), breadcrumb_bar.segment_data(segment_index));
-    };
-
-    breadcrumb_bar.on_segment_drag_enter = [&](size_t, GUI::DragEvent& event) {
-        if (event.mime_types().contains_slow("text/uri-list"))
-            event.accept();
-    };
-
-    breadcrumb_bar.on_doubleclick = [&](const GUI::MouseEvent&) {
-        go_to_location_action->activate();
-    };
-
-    tree_view.on_drop = [&](const GUI::ModelIndex& index, const GUI::DropEvent& event) {
-        if (!event.mime_data().has_urls())
-            return;
-        auto& target_node = directories_model->node(index);
-        if (!target_node.is_directory())
-            return;
-        copy_urls_to_directory(event.mime_data().urls(), target_node.full_path());
-    };
-
-    directory_view.open(initial_location);
-    directory_view.set_focus(true);
-
-    paste_action->set_enabled(GUI::Clipboard::the().mime_type() == "text/uri-list" && access(initial_location.characters(), W_OK) == 0);
-
-    window->show();
-
-    // Read directory read mode from config.
-    auto dir_view_mode = config->read_entry("DirectoryView", "ViewMode", "Icon");
-
-    if (dir_view_mode.contains("Table")) {
-        directory_view.set_view_mode(DirectoryView::ViewMode::Table);
-        view_as_table_action->set_checked(true);
-    } else if (dir_view_mode.contains("Columns")) {
-        directory_view.set_view_mode(DirectoryView::ViewMode::Columns);
-        view_as_columns_action->set_checked(true);
-    } else {
-        directory_view.set_view_mode(DirectoryView::ViewMode::Icon);
-        view_as_icons_action->set_checked(true);
-    }
-
-    // Write window position to config file on close request.
-    window->on_close_request = [&] {
-        config->write_num_entry("Window", "Left", window->x());
-        config->write_num_entry("Window", "Top", window->y());
-        config->write_num_entry("Window", "Width", window->width());
-        config->write_num_entry("Window", "Height", window->height());
-        config->sync();
-
-        return GUI::Window::CloseRequestDecision::Close;
-    };
-
-    return GUI::Application::the()->exec();
-}
diff --git a/Applications/FontEditor/.gitignore b/Applications/FontEditor/.gitignore
deleted file mode 100644
index 0e7af5b54f..0000000000
--- a/Applications/FontEditor/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-UI_*.h
diff --git a/Applications/FontEditor/CMakeLists.txt b/Applications/FontEditor/CMakeLists.txt
deleted file mode 100644
index 569ab9a9bd..0000000000
--- a/Applications/FontEditor/CMakeLists.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-include_directories(${CMAKE_CURRENT_BINARY_DIR})
-
-set(SOURCES
-    FontEditor.cpp
-    GlyphEditorWidget.cpp
-    GlyphMapWidget.cpp
-    main.cpp
-)
-
-serenity_app(FontEditor ICON app-font-editor)
-target_link_libraries(FontEditor LibGUI LibDesktop LibGfx)
diff --git a/Applications/FontEditor/FontEditor.cpp b/Applications/FontEditor/FontEditor.cpp
deleted file mode 100644
index 56cbf3e06b..0000000000
--- a/Applications/FontEditor/FontEditor.cpp
+++ /dev/null
@@ -1,372 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "FontEditor.h"
-#include "GlyphEditorWidget.h"
-#include "GlyphMapWidget.h"
-#include <AK/StringBuilder.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/CheckBox.h>
-#include <LibGUI/GroupBox.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/SpinBox.h>
-#include <LibGUI/TextBox.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/BitmapFont.h>
-#include <LibGfx/Palette.h>
-#include <stdlib.h>
-
-FontEditorWidget::FontEditorWidget(const String& path, RefPtr<Gfx::BitmapFont>&& edited_font)
-    : m_edited_font(move(edited_font))
-    , m_path(path)
-{
-    set_fill_with_background_color(true);
-    set_layout<GUI::VerticalBoxLayout>();
-
-    // Top
-    auto& main_container = add<GUI::Widget>();
-    main_container.set_layout<GUI::HorizontalBoxLayout>();
-    main_container.layout()->set_margins({ 4, 4, 4, 4 });
-    main_container.set_background_role(Gfx::ColorRole::SyntaxKeyword);
-
-    // Top-Left Glyph Editor and info
-    auto& editor_container = main_container.add<GUI::Widget>();
-    editor_container.set_layout<GUI::VerticalBoxLayout>();
-    editor_container.layout()->set_margins({ 4, 4, 4, 4 });
-    editor_container.set_background_role(Gfx::ColorRole::SyntaxKeyword);
-
-    m_glyph_editor_widget = editor_container.add<GlyphEditorWidget>(*m_edited_font);
-    m_glyph_editor_widget->set_fixed_size(m_glyph_editor_widget->preferred_width(), m_glyph_editor_widget->preferred_height());
-
-    editor_container.set_fixed_width(m_glyph_editor_widget->preferred_width());
-
-    auto& glyph_width_label = editor_container.add<GUI::Label>();
-    glyph_width_label.set_fixed_height(22);
-    glyph_width_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    glyph_width_label.set_text("Glyph width:");
-
-    auto& glyph_width_spinbox = editor_container.add<GUI::SpinBox>();
-    glyph_width_spinbox.set_min(0);
-    glyph_width_spinbox.set_max(32);
-    glyph_width_spinbox.set_value(0);
-    glyph_width_spinbox.set_enabled(!m_edited_font->is_fixed_width());
-
-    auto& info_label = editor_container.add<GUI::Label>();
-    info_label.set_fixed_height(22);
-    info_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    info_label.set_text("info_label");
-
-    /// Top-Right glyph map and font meta data
-
-    auto& map_and_test_container = main_container.add<GUI::Widget>();
-    map_and_test_container.set_layout<GUI::VerticalBoxLayout>();
-    map_and_test_container.layout()->set_margins({ 4, 4, 4, 4 });
-
-    m_glyph_map_widget = map_and_test_container.add<GlyphMapWidget>(*m_edited_font);
-    m_glyph_map_widget->set_fixed_size(m_glyph_map_widget->preferred_width(), m_glyph_map_widget->preferred_height());
-
-    auto& font_mtest_group_box = map_and_test_container.add<GUI::GroupBox>();
-    font_mtest_group_box.set_layout<GUI::VerticalBoxLayout>();
-    font_mtest_group_box.layout()->set_margins({ 5, 15, 5, 5 });
-    font_mtest_group_box.set_fixed_height(2 * m_edited_font->glyph_height() + 50);
-    font_mtest_group_box.set_title("Test");
-
-    auto& demo_label_1 = font_mtest_group_box.add<GUI::Label>();
-    demo_label_1.set_font(m_edited_font);
-    demo_label_1.set_text("quick fox jumps nightly above wizard.");
-
-    auto& demo_label_2 = font_mtest_group_box.add<GUI::Label>();
-    demo_label_2.set_font(m_edited_font);
-    demo_label_2.set_text("QUICK FOX JUMPS NIGHTLY ABOVE WIZARD!");
-
-    auto& font_metadata_group_box = map_and_test_container.add<GUI::GroupBox>();
-    font_metadata_group_box.set_layout<GUI::VerticalBoxLayout>();
-    font_metadata_group_box.layout()->set_margins({ 5, 15, 5, 5 });
-    font_metadata_group_box.set_fixed_height(275);
-    font_metadata_group_box.set_title("Font metadata");
-
-    //// Name Row
-    auto& namecontainer = font_metadata_group_box.add<GUI::Widget>();
-    namecontainer.set_layout<GUI::HorizontalBoxLayout>();
-    namecontainer.set_fixed_height(22);
-
-    auto& name_label = namecontainer.add<GUI::Label>();
-    name_label.set_fixed_width(100);
-    name_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    name_label.set_text("Name:");
-
-    auto& name_textbox = namecontainer.add<GUI::TextBox>();
-    name_textbox.set_text(m_edited_font->name());
-    name_textbox.on_change = [&] {
-        m_edited_font->set_name(name_textbox.text());
-    };
-
-    //// Family Row
-    auto& family_container = font_metadata_group_box.add<GUI::Widget>();
-    family_container.set_layout<GUI::HorizontalBoxLayout>();
-    family_container.set_fixed_height(22);
-
-    auto& family_label = family_container.add<GUI::Label>();
-    family_label.set_fixed_width(100);
-    family_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    family_label.set_text("Family:");
-
-    auto& family_textbox = family_container.add<GUI::TextBox>();
-    family_textbox.set_text(m_edited_font->family());
-    family_textbox.on_change = [&] {
-        m_edited_font->set_family(family_textbox.text());
-    };
-
-    //// Presentation size Row
-    auto& presentation_size_container = font_metadata_group_box.add<GUI::Widget>();
-    presentation_size_container.set_layout<GUI::HorizontalBoxLayout>();
-    presentation_size_container.set_fixed_height(22);
-
-    auto& presentation_size_label = presentation_size_container.add<GUI::Label>();
-    presentation_size_label.set_fixed_width(100);
-    presentation_size_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    presentation_size_label.set_text("Presentation size:");
-
-    auto& presentation_size_spinbox = presentation_size_container.add<GUI::SpinBox>();
-    presentation_size_spinbox.set_min(0);
-    presentation_size_spinbox.set_max(255);
-    presentation_size_spinbox.set_value(m_edited_font->presentation_size());
-
-    //// Weight Row
-    auto& weight_container = font_metadata_group_box.add<GUI::Widget>();
-    weight_container.set_layout<GUI::HorizontalBoxLayout>();
-    weight_container.set_fixed_height(22);
-
-    auto& weight_label = weight_container.add<GUI::Label>();
-    weight_label.set_fixed_width(100);
-    weight_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    weight_label.set_text("Weight:");
-
-    auto& weight_spinbox = weight_container.add<GUI::SpinBox>();
-    weight_spinbox.set_min(0);
-    weight_spinbox.set_max(65535);
-    weight_spinbox.set_value(m_edited_font->weight());
-
-    //// Glyph spacing Row
-    auto& glyph_spacing_container = font_metadata_group_box.add<GUI::Widget>();
-    glyph_spacing_container.set_layout<GUI::HorizontalBoxLayout>();
-    glyph_spacing_container.set_fixed_height(22);
-
-    auto& glyph_spacing = glyph_spacing_container.add<GUI::Label>();
-    glyph_spacing.set_fixed_width(100);
-    glyph_spacing.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    glyph_spacing.set_text("Glyph spacing:");
-
-    auto& spacing_spinbox = glyph_spacing_container.add<GUI::SpinBox>();
-    spacing_spinbox.set_min(0);
-    spacing_spinbox.set_max(255);
-    spacing_spinbox.set_value(m_edited_font->glyph_spacing());
-
-    //// Glyph Height Row
-    auto& glyph_height_container = font_metadata_group_box.add<GUI::Widget>();
-    glyph_height_container.set_layout<GUI::HorizontalBoxLayout>();
-    glyph_height_container.set_fixed_height(22);
-
-    auto& glyph_height = glyph_height_container.add<GUI::Label>();
-    glyph_height.set_fixed_width(100);
-    glyph_height.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    glyph_height.set_text("Glyph height:");
-
-    auto& glyph_height_spinbox = glyph_height_container.add<GUI::SpinBox>();
-    glyph_height_spinbox.set_min(0);
-    glyph_height_spinbox.set_max(255);
-    glyph_height_spinbox.set_value(m_edited_font->glyph_height());
-    glyph_height_spinbox.set_enabled(false);
-
-    //// Glyph width Row
-    auto& glyph_weight_container = font_metadata_group_box.add<GUI::Widget>();
-    glyph_weight_container.set_layout<GUI::HorizontalBoxLayout>();
-    glyph_weight_container.set_fixed_height(22);
-
-    auto& glyph_header_width_label = glyph_weight_container.add<GUI::Label>();
-    glyph_header_width_label.set_fixed_width(100);
-    glyph_header_width_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    glyph_header_width_label.set_text("Glyph width:");
-
-    auto& glyph_header_width_spinbox = glyph_weight_container.add<GUI::SpinBox>();
-    glyph_header_width_spinbox.set_min(0);
-    glyph_header_width_spinbox.set_max(255);
-    glyph_header_width_spinbox.set_value(m_edited_font->glyph_fixed_width());
-    glyph_header_width_spinbox.set_enabled(false);
-
-    //// Baseline Row
-    auto& baseline_container = font_metadata_group_box.add<GUI::Widget>();
-    baseline_container.set_layout<GUI::HorizontalBoxLayout>();
-    baseline_container.set_fixed_height(22);
-
-    auto& baseline_label = baseline_container.add<GUI::Label>();
-    baseline_label.set_fixed_width(100);
-    baseline_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    baseline_label.set_text("Baseline:");
-
-    auto& baseline_spinbox = baseline_container.add<GUI::SpinBox>();
-    baseline_spinbox.set_min(0);
-    baseline_spinbox.set_max(m_edited_font->glyph_height() - 1);
-    baseline_spinbox.set_value(m_edited_font->baseline());
-
-    //// Mean line Row
-    auto& mean_line_container = font_metadata_group_box.add<GUI::Widget>();
-    mean_line_container.set_layout<GUI::HorizontalBoxLayout>();
-    mean_line_container.set_fixed_height(22);
-
-    auto& mean_line_label = mean_line_container.add<GUI::Label>();
-    mean_line_label.set_fixed_width(100);
-    mean_line_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    mean_line_label.set_text("Mean Line:");
-
-    auto& mean_line_spinbox = mean_line_container.add<GUI::SpinBox>();
-    mean_line_spinbox.set_min(0);
-    mean_line_spinbox.set_max(m_edited_font->glyph_height() - 1);
-    mean_line_spinbox.set_value(m_edited_font->mean_line());
-
-    //// Fixed checkbox Row
-    auto& fixed_width_checkbox = font_metadata_group_box.add<GUI::CheckBox>();
-    fixed_width_checkbox.set_text("Fixed width");
-    fixed_width_checkbox.set_checked(m_edited_font->is_fixed_width());
-
-    // Bottom
-    auto& bottom_container = add<GUI::Widget>();
-    bottom_container.set_layout<GUI::HorizontalBoxLayout>();
-    bottom_container.layout()->set_margins({ 8, 0, 8, 8 });
-    bottom_container.set_fixed_height(32);
-
-    bottom_container.layout()->add_spacer();
-
-    auto& save_button = bottom_container.add<GUI::Button>();
-    save_button.set_fixed_size(80, 22);
-    save_button.set_text("Save");
-    save_button.on_click = [this](auto) { save_as(m_path); };
-
-    auto& quit_button = bottom_container.add<GUI::Button>();
-    quit_button.set_fixed_size(80, 22);
-    quit_button.set_text("Quit");
-    quit_button.on_click = [](auto) {
-        exit(0);
-    };
-
-    // Event hanglers
-    auto update_demo = [&] {
-        demo_label_1.update();
-        demo_label_2.update();
-    };
-
-    auto calculate_prefed_sizes = [&] {
-        int right_site_width = m_edited_font->width("QUICK FOX JUMPS NIGHTLY ABOVE WIZARD!") + 20;
-        right_site_width = max(right_site_width, m_glyph_map_widget->preferred_width());
-
-        m_preferred_width = m_glyph_editor_widget->width() + right_site_width + 20;
-        m_preferred_height = m_glyph_map_widget->relative_rect().height() + 2 * m_edited_font->glyph_height() + 380;
-    };
-
-    m_glyph_editor_widget->on_glyph_altered = [this, update_demo](u8 glyph) {
-        m_glyph_map_widget->update_glyph(glyph);
-        update_demo();
-    };
-
-    m_glyph_map_widget->on_glyph_selected = [&](size_t glyph) {
-        m_glyph_editor_widget->set_glyph(glyph);
-        glyph_width_spinbox.set_value(m_edited_font->glyph_width(m_glyph_map_widget->selected_glyph()));
-        StringBuilder builder;
-        builder.appendff("{:#02x} (", glyph);
-        if (glyph < 128) {
-            builder.append(glyph);
-        } else {
-            builder.append(128 | 64 | (glyph / 64));
-            builder.append(128 | (glyph % 64));
-        }
-        builder.append(')');
-        info_label.set_text(builder.to_string());
-    };
-
-    fixed_width_checkbox.on_checked = [&, update_demo](bool checked) {
-        m_edited_font->set_fixed_width(checked);
-        glyph_width_spinbox.set_enabled(!m_edited_font->is_fixed_width());
-        glyph_width_spinbox.set_value(m_edited_font->glyph_width(m_glyph_map_widget->selected_glyph()));
-        m_glyph_editor_widget->update();
-        update_demo();
-    };
-
-    glyph_width_spinbox.on_change = [this, update_demo](int value) {
-        m_edited_font->set_glyph_width(m_glyph_map_widget->selected_glyph(), value);
-        m_glyph_editor_widget->update();
-        m_glyph_map_widget->update_glyph(m_glyph_map_widget->selected_glyph());
-        update_demo();
-    };
-
-    weight_spinbox.on_change = [this, update_demo](int value) {
-        m_edited_font->set_weight(value);
-        update_demo();
-    };
-
-    presentation_size_spinbox.on_change = [this, update_demo](int value) {
-        m_edited_font->set_presentation_size(value);
-        update_demo();
-    };
-
-    spacing_spinbox.on_change = [this, update_demo](int value) {
-        m_edited_font->set_glyph_spacing(value);
-        update_demo();
-    };
-
-    baseline_spinbox.on_change = [this, update_demo](int value) {
-        m_edited_font->set_baseline(value);
-        m_glyph_editor_widget->update();
-        update_demo();
-    };
-
-    mean_line_spinbox.on_change = [this, update_demo](int value) {
-        m_edited_font->set_mean_line(value);
-        m_glyph_editor_widget->update();
-        update_demo();
-    };
-
-    // init widget
-    calculate_prefed_sizes();
-    m_glyph_map_widget->set_selected_glyph('A');
-}
-
-FontEditorWidget::~FontEditorWidget()
-{
-}
-
-bool FontEditorWidget::save_as(const String& path)
-{
-    auto ret_val = m_edited_font->write_to_file(path);
-    if (!ret_val) {
-        GUI::MessageBox::show(window(), "The font file could not be saved.", "Save failed", GUI::MessageBox::Type::Error);
-        return false;
-    }
-    m_path = path;
-    return true;
-}
diff --git a/Applications/FontEditor/FontEditor.h b/Applications/FontEditor/FontEditor.h
deleted file mode 100644
index ed904e8e7d..0000000000
--- a/Applications/FontEditor/FontEditor.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <LibGUI/Widget.h>
-#include <LibGfx/BitmapFont.h>
-
-class GlyphEditorWidget;
-class GlyphMapWidget;
-
-class FontEditorWidget final : public GUI::Widget {
-    C_OBJECT(FontEditorWidget)
-public:
-    virtual ~FontEditorWidget() override;
-
-    int preferred_width() { return m_preferred_width; }
-    int preferred_height() { return m_preferred_height; }
-
-    bool save_as(const String&);
-
-    const String& path() { return m_path; }
-
-private:
-    FontEditorWidget(const String& path, RefPtr<Gfx::BitmapFont>&&);
-    RefPtr<Gfx::BitmapFont> m_edited_font;
-
-    RefPtr<GlyphMapWidget> m_glyph_map_widget;
-    RefPtr<GlyphEditorWidget> m_glyph_editor_widget;
-
-    String m_path;
-    int m_preferred_width;
-    int m_preferred_height;
-};
diff --git a/Applications/FontEditor/GlyphEditorWidget.cpp b/Applications/FontEditor/GlyphEditorWidget.cpp
deleted file mode 100644
index 6f545c1ccd..0000000000
--- a/Applications/FontEditor/GlyphEditorWidget.cpp
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "GlyphEditorWidget.h"
-#include <LibGUI/Painter.h>
-#include <LibGfx/BitmapFont.h>
-#include <LibGfx/Palette.h>
-
-GlyphEditorWidget::GlyphEditorWidget(Gfx::BitmapFont& mutable_font)
-    : m_font(mutable_font)
-{
-    set_relative_rect({ 0, 0, preferred_width(), preferred_height() });
-}
-
-GlyphEditorWidget::~GlyphEditorWidget()
-{
-}
-
-void GlyphEditorWidget::set_glyph(int glyph)
-{
-    if (m_glyph == glyph)
-        return;
-    m_glyph = glyph;
-    update();
-}
-
-void GlyphEditorWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(frame_inner_rect());
-    painter.add_clip_rect(event.rect());
-    painter.fill_rect(frame_inner_rect(), palette().base());
-    painter.translate(frame_thickness(), frame_thickness());
-
-    painter.translate(-1, -1);
-    for (int y = 1; y < font().glyph_height(); ++y) {
-        int y_below = y - 1;
-        bool bold_line = y_below == font().baseline() || y_below == font().mean_line();
-        painter.draw_line({ 0, y * m_scale }, { font().max_glyph_width() * m_scale, y * m_scale }, palette().threed_shadow2(), bold_line ? 2 : 1);
-    }
-
-    for (int x = 1; x < font().max_glyph_width(); ++x)
-        painter.draw_line({ x * m_scale, 0 }, { x * m_scale, font().glyph_height() * m_scale }, palette().threed_shadow2());
-
-    auto bitmap = font().glyph_bitmap(m_glyph);
-
-    for (int y = 0; y < font().glyph_height(); ++y) {
-        for (int x = 0; x < font().max_glyph_width(); ++x) {
-            Gfx::IntRect rect { x * m_scale, y * m_scale, m_scale, m_scale };
-            if (x >= font().glyph_width(m_glyph)) {
-                painter.fill_rect(rect, palette().threed_shadow1());
-            } else {
-                if (bitmap.bit_at(x, y))
-                    painter.fill_rect(rect, palette().base_text());
-            }
-        }
-    }
-}
-
-void GlyphEditorWidget::mousedown_event(GUI::MouseEvent& event)
-{
-    draw_at_mouse(event);
-}
-
-void GlyphEditorWidget::mousemove_event(GUI::MouseEvent& event)
-{
-    if (event.buttons() & (GUI::MouseButton::Left | GUI::MouseButton::Right))
-        draw_at_mouse(event);
-}
-
-void GlyphEditorWidget::draw_at_mouse(const GUI::MouseEvent& event)
-{
-    bool set = event.buttons() & GUI::MouseButton::Left;
-    bool unset = event.buttons() & GUI::MouseButton::Right;
-    if (!(set ^ unset))
-        return;
-    int x = (event.x() - 1) / m_scale;
-    int y = (event.y() - 1) / m_scale;
-    auto bitmap = font().glyph_bitmap(m_glyph);
-    if (x < 0 || x >= bitmap.width())
-        return;
-    if (y < 0 || y >= bitmap.height())
-        return;
-    if (bitmap.bit_at(x, y) == set)
-        return;
-    bitmap.set_bit_at(x, y, set);
-    if (on_glyph_altered)
-        on_glyph_altered(m_glyph);
-    update();
-}
-
-int GlyphEditorWidget::preferred_width() const
-{
-    return frame_thickness() * 2 + font().max_glyph_width() * m_scale - 1;
-}
-
-int GlyphEditorWidget::preferred_height() const
-{
-    return frame_thickness() * 2 + font().glyph_height() * m_scale - 1;
-}
diff --git a/Applications/FontEditor/GlyphEditorWidget.h b/Applications/FontEditor/GlyphEditorWidget.h
deleted file mode 100644
index a54c551642..0000000000
--- a/Applications/FontEditor/GlyphEditorWidget.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <LibGUI/Frame.h>
-#include <LibGfx/BitmapFont.h>
-
-class GlyphEditorWidget final : public GUI::Frame {
-    C_OBJECT(GlyphEditorWidget)
-public:
-    virtual ~GlyphEditorWidget() override;
-
-    int glyph() const { return m_glyph; }
-    void set_glyph(int);
-
-    int preferred_width() const;
-    int preferred_height() const;
-
-    Gfx::BitmapFont& font() { return *m_font; }
-    const Gfx::BitmapFont& font() const { return *m_font; }
-
-    Function<void(u8)> on_glyph_altered;
-
-private:
-    GlyphEditorWidget(Gfx::BitmapFont&);
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void mousedown_event(GUI::MouseEvent&) override;
-    virtual void mousemove_event(GUI::MouseEvent&) override;
-
-    void draw_at_mouse(const GUI::MouseEvent&);
-
-    RefPtr<Gfx::BitmapFont> m_font;
-    int m_glyph { 0 };
-    int m_scale { 10 };
-};
diff --git a/Applications/FontEditor/GlyphMapWidget.cpp b/Applications/FontEditor/GlyphMapWidget.cpp
deleted file mode 100644
index ed6a65493f..0000000000
--- a/Applications/FontEditor/GlyphMapWidget.cpp
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "GlyphMapWidget.h"
-#include <LibGUI/Painter.h>
-#include <LibGfx/BitmapFont.h>
-#include <LibGfx/Palette.h>
-
-GlyphMapWidget::GlyphMapWidget(Gfx::BitmapFont& mutable_font)
-    : m_font(mutable_font)
-{
-    m_glyph_count = mutable_font.glyph_count();
-    set_relative_rect({ 0, 0, preferred_width(), preferred_height() });
-    set_focus_policy(GUI::FocusPolicy::StrongFocus);
-}
-
-GlyphMapWidget::~GlyphMapWidget()
-{
-}
-
-int GlyphMapWidget::preferred_width() const
-{
-    return columns() * (font().max_glyph_width() + m_horizontal_spacing) + 2 + frame_thickness() * 2;
-}
-
-int GlyphMapWidget::preferred_height() const
-{
-    return rows() * (font().glyph_height() + m_vertical_spacing) + 2 + frame_thickness() * 2;
-}
-
-void GlyphMapWidget::set_selected_glyph(int glyph)
-{
-    if (m_selected_glyph == glyph)
-        return;
-    m_selected_glyph = glyph;
-    if (on_glyph_selected)
-        on_glyph_selected(glyph);
-    update();
-}
-
-Gfx::IntRect GlyphMapWidget::get_outer_rect(int glyph) const
-{
-    int row = glyph / columns();
-    int column = glyph % columns();
-    return Gfx::IntRect {
-        column * (font().max_glyph_width() + m_horizontal_spacing) + 1,
-        row * (font().glyph_height() + m_vertical_spacing) + 1,
-        font().max_glyph_width() + m_horizontal_spacing,
-        font().glyph_height() + m_horizontal_spacing
-    }
-        .translated(frame_thickness(), frame_thickness());
-}
-
-void GlyphMapWidget::update_glyph(int glyph)
-{
-    update(get_outer_rect(glyph));
-}
-
-void GlyphMapWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(event.rect());
-
-    painter.set_font(font());
-    painter.fill_rect(frame_inner_rect(), palette().base());
-
-    for (int glyph = 0; glyph < m_glyph_count; ++glyph) {
-        Gfx::IntRect outer_rect = get_outer_rect(glyph);
-        Gfx::IntRect inner_rect(
-            outer_rect.x() + m_horizontal_spacing / 2,
-            outer_rect.y() + m_vertical_spacing / 2,
-            font().max_glyph_width(),
-            font().glyph_height());
-        if (glyph == m_selected_glyph) {
-            painter.fill_rect(outer_rect, is_focused() ? palette().selection() : palette().inactive_selection());
-            painter.draw_glyph(inner_rect.location(), glyph, is_focused() ? palette().selection_text() : palette().inactive_selection_text());
-        } else {
-            painter.draw_glyph(inner_rect.location(), glyph, palette().base_text());
-        }
-    }
-}
-
-void GlyphMapWidget::mousedown_event(GUI::MouseEvent& event)
-{
-    GUI::Frame::mousedown_event(event);
-
-    // FIXME: This is a silly loop.
-    for (int glyph = 0; glyph < m_glyph_count; ++glyph) {
-        if (get_outer_rect(glyph).contains(event.position())) {
-            set_selected_glyph(glyph);
-            break;
-        }
-    }
-}
-
-void GlyphMapWidget::keydown_event(GUI::KeyEvent& event)
-{
-    GUI::Frame::keydown_event(event);
-
-    if (event.key() == KeyCode::Key_Up) {
-        if (selected_glyph() >= m_columns) {
-            set_selected_glyph(selected_glyph() - m_columns);
-            return;
-        }
-    }
-    if (event.key() == KeyCode::Key_Down) {
-        if (selected_glyph() < m_glyph_count - m_columns) {
-            set_selected_glyph(selected_glyph() + m_columns);
-            return;
-        }
-    }
-    if (event.key() == KeyCode::Key_Left) {
-        if (selected_glyph() > 0) {
-            set_selected_glyph(selected_glyph() - 1);
-            return;
-        }
-    }
-    if (event.key() == KeyCode::Key_Right) {
-        if (selected_glyph() < m_glyph_count - 1) {
-            set_selected_glyph(selected_glyph() + 1);
-            return;
-        }
-    }
-    if (event.ctrl() && event.key() == KeyCode::Key_Home) {
-        set_selected_glyph(0);
-        return;
-    }
-    if (event.ctrl() && event.key() == KeyCode::Key_End) {
-        set_selected_glyph(m_glyph_count - 1);
-        return;
-    }
-    if (!event.ctrl() && event.key() == KeyCode::Key_Home) {
-        set_selected_glyph(selected_glyph() / m_columns * m_columns);
-        return;
-    }
-    if (!event.ctrl() && event.key() == KeyCode::Key_End) {
-        int new_selection = selected_glyph() / m_columns * m_columns + (m_columns - 1);
-        int max = m_glyph_count - 1;
-        new_selection = clamp(new_selection, 0, max);
-        set_selected_glyph(new_selection);
-        return;
-    }
-}
diff --git a/Applications/FontEditor/GlyphMapWidget.h b/Applications/FontEditor/GlyphMapWidget.h
deleted file mode 100644
index 2c8443a251..0000000000
--- a/Applications/FontEditor/GlyphMapWidget.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <AK/StdLibExtras.h>
-#include <LibGUI/Frame.h>
-#include <LibGfx/BitmapFont.h>
-
-class GlyphMapWidget final : public GUI::Frame {
-    C_OBJECT(GlyphMapWidget)
-public:
-    virtual ~GlyphMapWidget() override;
-
-    int selected_glyph() const { return m_selected_glyph; }
-    void set_selected_glyph(int);
-
-    int rows() const { return ceil_div(m_glyph_count, m_columns); }
-    int columns() const { return m_columns; }
-
-    int preferred_width() const;
-    int preferred_height() const;
-
-    Gfx::BitmapFont& font() { return *m_font; }
-    const Gfx::BitmapFont& font() const { return *m_font; }
-
-    void update_glyph(int);
-
-    Function<void(int)> on_glyph_selected;
-
-private:
-    explicit GlyphMapWidget(Gfx::BitmapFont&);
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void mousedown_event(GUI::MouseEvent&) override;
-    virtual void keydown_event(GUI::KeyEvent&) override;
-
-    Gfx::IntRect get_outer_rect(int glyph) const;
-
-    RefPtr<Gfx::BitmapFont> m_font;
-    int m_glyph_count;
-    int m_columns { 32 };
-    int m_horizontal_spacing { 2 };
-    int m_vertical_spacing { 2 };
-    int m_selected_glyph { 0 };
-};
diff --git a/Applications/FontEditor/main.cpp b/Applications/FontEditor/main.cpp
deleted file mode 100644
index f0a72d1d29..0000000000
--- a/Applications/FontEditor/main.cpp
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "FontEditor.h"
-#include <AK/URL.h>
-#include <LibCore/ArgsParser.h>
-#include <LibDesktop/Launcher.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/BitmapFont.h>
-#include <LibGfx/FontDatabase.h>
-#include <LibGfx/Point.h>
-#include <stdio.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio shared_buffer thread rpath accept unix cpath wpath fattr unix", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio shared_buffer thread rpath accept cpath wpath unix", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (!Desktop::Launcher::add_allowed_handler_with_only_specific_urls(
-            "/bin/Help",
-            { URL::create_with_file_protocol("/usr/share/man/man1/FontEditor.md") })
-        || !Desktop::Launcher::seal_allowlist()) {
-        warnln("Failed to set up allowed launch URLs");
-        return 1;
-    }
-
-    if (pledge("stdio shared_buffer thread rpath accept cpath wpath", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    const char* path = nullptr;
-    Core::ArgsParser args_parser;
-    args_parser.add_positional_argument(path, "The font file for editing.", "file", Core::ArgsParser::Required::No);
-    args_parser.parse(argc, argv);
-
-    RefPtr<Gfx::BitmapFont> edited_font;
-    if (path == nullptr) {
-        path = "/tmp/saved.font";
-        edited_font = static_ptr_cast<Gfx::BitmapFont>(Gfx::FontDatabase::default_font().clone());
-    } else {
-        edited_font = static_ptr_cast<Gfx::BitmapFont>(Gfx::Font::load_from_file(path)->clone());
-        if (!edited_font) {
-            String message = String::formatted("Couldn't load font: {}\n", path);
-            GUI::MessageBox::show(nullptr, message, "Font Editor", GUI::MessageBox::Type::Error);
-            return 1;
-        }
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-font-editor");
-
-    auto window = GUI::Window::construct();
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    auto set_edited_font = [&](const String& path, RefPtr<Gfx::BitmapFont>&& font, Gfx::IntPoint point) {
-        // Convert 256 char font to 384 char font.
-        if (font->type() == Gfx::FontTypes::Default)
-            font->set_type(Gfx::FontTypes::LatinExtendedA);
-
-        window->set_title(String::formatted("{} - Font Editor", path));
-        auto& font_editor_widget = window->set_main_widget<FontEditorWidget>(path, move(font));
-        window->set_rect({ point, { font_editor_widget.preferred_width(), font_editor_widget.preferred_height() } });
-    };
-    set_edited_font(path, move(edited_font), window->position());
-
-    auto menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = menubar->add_menu("Font Editor");
-    app_menu.add_action(GUI::CommonActions::make_open_action([&](auto&) {
-        Optional<String> open_path = GUI::FilePicker::get_open_filepath(window);
-        if (!open_path.has_value())
-            return;
-
-        RefPtr<Gfx::BitmapFont> new_font = static_ptr_cast<Gfx::BitmapFont>(Gfx::Font::load_from_file(open_path.value())->clone());
-        if (!new_font) {
-            String message = String::formatted("Couldn't load font: {}\n", open_path.value());
-            GUI::MessageBox::show(window, message, "Font Editor", GUI::MessageBox::Type::Error);
-            return;
-        }
-
-        set_edited_font(open_path.value(), move(new_font), window->position());
-    }));
-    app_menu.add_action(GUI::CommonActions::make_save_action([&](auto&) {
-        FontEditorWidget* editor = static_cast<FontEditorWidget*>(window->main_widget());
-        editor->save_as(editor->path());
-    }));
-    app_menu.add_action(GUI::CommonActions::make_save_as_action([&](auto&) {
-        FontEditorWidget* editor = static_cast<FontEditorWidget*>(window->main_widget());
-        LexicalPath lexical_path(editor->path());
-        Optional<String> save_path = GUI::FilePicker::get_save_filepath(window, lexical_path.title(), lexical_path.extension());
-        if (!save_path.has_value())
-            return;
-
-        if (editor->save_as(save_path.value()))
-            window->set_title(String::formatted("{} - Font Editor", save_path.value()));
-    }));
-    app_menu.add_separator();
-    app_menu.add_action(GUI::CommonActions::make_quit_action([&](auto&) {
-        app->quit();
-        return;
-    }));
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_help_action([](auto&) {
-        Desktop::Launcher::open(URL::create_with_file_protocol("/usr/share/man/man1/FontEditor.md"), "/bin/Help");
-    }));
-
-    help_menu.add_action(GUI::CommonActions::make_about_action("Font Editor", app_icon, window));
-
-    app->set_menubar(move(menubar));
-
-    window->show();
-
-    return app->exec();
-}
diff --git a/Applications/Help/CMakeLists.txt b/Applications/Help/CMakeLists.txt
deleted file mode 100644
index 46a832c044..0000000000
--- a/Applications/Help/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-set(SOURCES
-    History.cpp
-    main.cpp
-    ManualModel.cpp
-    ManualPageNode.cpp
-    ManualSectionNode.cpp
-)
-
-serenity_app(Help ICON app-help)
-target_link_libraries(Help LibWeb LibMarkdown LibGUI LibDesktop)
diff --git a/Applications/Help/History.cpp b/Applications/Help/History.cpp
deleted file mode 100644
index bb4c822dcb..0000000000
--- a/Applications/Help/History.cpp
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "History.h"
-
-void History::push(const StringView& history_item)
-{
-    m_items.shrink(m_current_history_item + 1);
-    m_items.append(history_item);
-    m_current_history_item++;
-}
-
-String History::current()
-{
-    if (m_current_history_item == -1)
-        return {};
-    return m_items[m_current_history_item];
-}
-
-void History::go_back()
-{
-    ASSERT(can_go_back());
-    m_current_history_item--;
-}
-
-void History::go_forward()
-{
-    ASSERT(can_go_forward());
-    m_current_history_item++;
-}
-
-void History::clear()
-{
-    m_items = {};
-    m_current_history_item = -1;
-}
diff --git a/Applications/Help/History.h b/Applications/Help/History.h
deleted file mode 100644
index c4058fabfc..0000000000
--- a/Applications/Help/History.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/String.h>
-#include <AK/Vector.h>
-
-class History final {
-public:
-    void push(const StringView& history_item);
-    String current();
-
-    void go_back();
-    void go_forward();
-
-    bool can_go_back() { return m_current_history_item > 0; }
-    bool can_go_forward() { return m_current_history_item + 1 < static_cast<int>(m_items.size()); }
-
-    void clear();
-
-private:
-    Vector<String> m_items;
-    int m_current_history_item { -1 };
-};
diff --git a/Applications/Help/ManualModel.cpp b/Applications/Help/ManualModel.cpp
deleted file mode 100644
index 484b1b22c1..0000000000
--- a/Applications/Help/ManualModel.cpp
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ManualModel.h"
-#include "ManualNode.h"
-#include "ManualPageNode.h"
-#include "ManualSectionNode.h"
-#include <AK/ByteBuffer.h>
-#include <LibCore/File.h>
-#include <LibGUI/FilteringProxyModel.h>
-
-static ManualSectionNode s_sections[] = {
-    { "1", "User programs" },
-    { "2", "System calls" },
-    { "3", "Libraries" },
-    { "4", "Special files" },
-    { "5", "File formats" },
-    { "6", "Games" },
-    { "7", "Miscellanea" },
-    { "8", "Sysadmin tools" }
-};
-
-ManualModel::ManualModel()
-{
-    m_section_open_icon.set_bitmap_for_size(16, Gfx::Bitmap::load_from_file("/res/icons/16x16/book-open.png"));
-    m_section_icon.set_bitmap_for_size(16, Gfx::Bitmap::load_from_file("/res/icons/16x16/book.png"));
-    m_page_icon.set_bitmap_for_size(16, Gfx::Bitmap::load_from_file("/res/icons/16x16/filetype-unknown.png"));
-}
-
-Optional<GUI::ModelIndex> ManualModel::index_from_path(const StringView& path) const
-{
-    for (int section = 0; section < row_count(); ++section) {
-        auto parent_index = index(section, 0);
-        for (int row = 0; row < row_count(parent_index); ++row) {
-            auto child_index = index(row, 0, parent_index);
-            auto* node = static_cast<const ManualNode*>(child_index.internal_data());
-            if (!node->is_page())
-                continue;
-            auto* page = static_cast<const ManualPageNode*>(node);
-            if (page->path() != path)
-                continue;
-            return child_index;
-        }
-    }
-    return {};
-}
-
-String ManualModel::page_path(const GUI::ModelIndex& index) const
-{
-    if (!index.is_valid())
-        return {};
-    auto* node = static_cast<const ManualNode*>(index.internal_data());
-    if (!node->is_page())
-        return {};
-    auto* page = static_cast<const ManualPageNode*>(node);
-    return page->path();
-}
-
-Result<StringView, OSError> ManualModel::page_view(const String& path) const
-{
-    if (path.is_empty())
-        return StringView {};
-
-    {
-        // Check if we've got it cached already.
-        auto mapped_file = m_mapped_files.get(path);
-        if (mapped_file.has_value())
-            return StringView { mapped_file.value()->bytes() };
-    }
-
-    auto file_or_error = MappedFile::map(path);
-    if (file_or_error.is_error())
-        return file_or_error.error();
-
-    StringView view { file_or_error.value()->bytes() };
-    m_mapped_files.set(path, file_or_error.release_value());
-    return view;
-}
-
-String ManualModel::page_and_section(const GUI::ModelIndex& index) const
-{
-    if (!index.is_valid())
-        return {};
-    auto* node = static_cast<const ManualNode*>(index.internal_data());
-    if (!node->is_page())
-        return {};
-    auto* page = static_cast<const ManualPageNode*>(node);
-    auto* section = static_cast<const ManualSectionNode*>(page->parent());
-    return String::formatted("{}({})", page->name(), section->section_name());
-}
-
-GUI::ModelIndex ManualModel::index(int row, int column, const GUI::ModelIndex& parent_index) const
-{
-    if (!parent_index.is_valid())
-        return create_index(row, column, &s_sections[row]);
-    auto* parent = static_cast<const ManualNode*>(parent_index.internal_data());
-    auto* child = &parent->children()[row];
-    return create_index(row, column, child);
-}
-
-GUI::ModelIndex ManualModel::parent_index(const GUI::ModelIndex& index) const
-{
-    if (!index.is_valid())
-        return {};
-    auto* child = static_cast<const ManualNode*>(index.internal_data());
-    auto* parent = child->parent();
-    if (parent == nullptr)
-        return {};
-
-    if (parent->parent() == nullptr) {
-        for (size_t row = 0; row < sizeof(s_sections) / sizeof(s_sections[0]); row++)
-            if (&s_sections[row] == parent)
-                return create_index(row, 0, parent);
-        ASSERT_NOT_REACHED();
-    }
-    for (size_t row = 0; row < parent->parent()->children().size(); row++) {
-        ManualNode* child_at_row = &parent->parent()->children()[row];
-        if (child_at_row == parent)
-            return create_index(row, 0, parent);
-    }
-    ASSERT_NOT_REACHED();
-}
-
-int ManualModel::row_count(const GUI::ModelIndex& index) const
-{
-    if (!index.is_valid())
-        return sizeof(s_sections) / sizeof(s_sections[0]);
-    auto* node = static_cast<const ManualNode*>(index.internal_data());
-    return node->children().size();
-}
-
-int ManualModel::column_count(const GUI::ModelIndex&) const
-{
-    return 1;
-}
-
-GUI::Variant ManualModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
-{
-    auto* node = static_cast<const ManualNode*>(index.internal_data());
-    switch (role) {
-    case GUI::ModelRole::Search:
-        if (!node->is_page())
-            return {};
-        return String(page_view(page_path(index)).value());
-    case GUI::ModelRole::Display:
-        return node->name();
-    case GUI::ModelRole::Icon:
-        if (node->is_page())
-            return m_page_icon;
-        if (node->is_open())
-            return m_section_open_icon;
-        return m_section_icon;
-    default:
-        return {};
-    }
-}
-
-void ManualModel::update_section_node_on_toggle(const GUI::ModelIndex& index, const bool open)
-{
-    auto* node = static_cast<ManualSectionNode*>(index.internal_data());
-    node->set_open(open);
-}
-
-TriState ManualModel::data_matches(const GUI::ModelIndex& index, GUI::Variant term) const
-{
-    auto view_result = page_view(page_path(index));
-    if (view_result.is_error() || view_result.value().is_empty())
-        return TriState::False;
-
-    return view_result.value().contains(term.as_string()) ? TriState::True : TriState::False;
-}
-
-void ManualModel::update()
-{
-    did_update();
-}
diff --git a/Applications/Help/ManualModel.h b/Applications/Help/ManualModel.h
deleted file mode 100644
index 02efecaff0..0000000000
--- a/Applications/Help/ManualModel.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/NonnullRefPtr.h>
-#include <AK/Optional.h>
-#include <AK/Result.h>
-#include <AK/String.h>
-#include <LibGUI/Model.h>
-
-class ManualModel final : public GUI::Model {
-public:
-    static NonnullRefPtr<ManualModel> create()
-    {
-        return adopt(*new ManualModel);
-    }
-
-    virtual ~ManualModel() override {};
-
-    Optional<GUI::ModelIndex> index_from_path(const StringView&) const;
-
-    String page_path(const GUI::ModelIndex&) const;
-    String page_and_section(const GUI::ModelIndex&) const;
-    Result<StringView, OSError> page_view(const String& path) const;
-
-    void update_section_node_on_toggle(const GUI::ModelIndex&, const bool);
-    virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
-    virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
-    virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
-    virtual TriState data_matches(const GUI::ModelIndex&, GUI::Variant) const override;
-    virtual void update() override;
-    virtual GUI::ModelIndex parent_index(const GUI::ModelIndex&) const override;
-    virtual GUI::ModelIndex index(int row, int column = 0, const GUI::ModelIndex& parent = GUI::ModelIndex()) const override;
-
-private:
-    ManualModel();
-
-    GUI::Icon m_section_open_icon;
-    GUI::Icon m_section_icon;
-    GUI::Icon m_page_icon;
-    mutable HashMap<String, NonnullRefPtr<MappedFile>> m_mapped_files;
-};
diff --git a/Applications/Help/ManualNode.h b/Applications/Help/ManualNode.h
deleted file mode 100644
index b5901f9787..0000000000
--- a/Applications/Help/ManualNode.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/NonnullOwnPtrVector.h>
-#include <AK/String.h>
-
-class ManualNode {
-public:
-    virtual ~ManualNode() { }
-
-    virtual NonnullOwnPtrVector<ManualNode>& children() const = 0;
-    virtual const ManualNode* parent() const = 0;
-    virtual String name() const = 0;
-    virtual bool is_page() const { return false; }
-    virtual bool is_open() const { return false; }
-};
diff --git a/Applications/Help/ManualPageNode.cpp b/Applications/Help/ManualPageNode.cpp
deleted file mode 100644
index 4b30c4dca4..0000000000
--- a/Applications/Help/ManualPageNode.cpp
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ManualPageNode.h"
-#include "ManualSectionNode.h"
-
-const ManualNode* ManualPageNode::parent() const
-{
-    return &m_section;
-}
-
-NonnullOwnPtrVector<ManualNode>& ManualPageNode::children() const
-{
-    static NonnullOwnPtrVector<ManualNode> empty_vector;
-    return empty_vector;
-}
-
-String ManualPageNode::path() const
-{
-    return String::formatted("{}/{}.md", m_section.path(), m_page);
-}
diff --git a/Applications/Help/ManualPageNode.h b/Applications/Help/ManualPageNode.h
deleted file mode 100644
index 6de744e0e4..0000000000
--- a/Applications/Help/ManualPageNode.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "ManualNode.h"
-
-class ManualSectionNode;
-
-class ManualPageNode : public ManualNode {
-public:
-    virtual ~ManualPageNode() override { }
-
-    ManualPageNode(const ManualSectionNode& section, const StringView& page)
-        : m_section(section)
-        , m_page(page)
-    {
-    }
-
-    virtual NonnullOwnPtrVector<ManualNode>& children() const override;
-    virtual const ManualNode* parent() const override;
-    virtual String name() const override { return m_page; };
-    virtual bool is_page() const override { return true; }
-
-    String path() const;
-
-private:
-    const ManualSectionNode& m_section;
-    String m_page;
-};
diff --git a/Applications/Help/ManualSectionNode.cpp b/Applications/Help/ManualSectionNode.cpp
deleted file mode 100644
index ce34eb3286..0000000000
--- a/Applications/Help/ManualSectionNode.cpp
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ManualSectionNode.h"
-#include "ManualPageNode.h"
-#include <AK/LexicalPath.h>
-#include <AK/QuickSort.h>
-#include <AK/String.h>
-#include <LibCore/DirIterator.h>
-
-String ManualSectionNode::path() const
-{
-    return String::formatted("/usr/share/man/man{}", m_section);
-}
-
-void ManualSectionNode::reify_if_needed() const
-{
-    if (m_reified)
-        return;
-    m_reified = true;
-
-    Core::DirIterator dir_iter { path(), Core::DirIterator::Flags::SkipDots };
-
-    Vector<String> page_names;
-    while (dir_iter.has_next()) {
-        LexicalPath lexical_path(dir_iter.next_path());
-        if (lexical_path.extension() != "md")
-            continue;
-        page_names.append(lexical_path.title());
-    }
-
-    quick_sort(page_names);
-
-    for (auto& page_name : page_names)
-        m_children.append(make<ManualPageNode>(*this, move(page_name)));
-}
-
-void ManualSectionNode::set_open(bool open)
-{
-    if (m_open == open)
-        return;
-    m_open = open;
-}
diff --git a/Applications/Help/ManualSectionNode.h b/Applications/Help/ManualSectionNode.h
deleted file mode 100644
index 9b70ea9812..0000000000
--- a/Applications/Help/ManualSectionNode.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "ManualNode.h"
-
-class ManualSectionNode : public ManualNode {
-public:
-    virtual ~ManualSectionNode() override { }
-
-    ManualSectionNode(String section, String name)
-        : m_section(section)
-        , m_full_name(String::formatted("{}. {}", section, name))
-    {
-    }
-
-    virtual NonnullOwnPtrVector<ManualNode>& children() const override
-    {
-        reify_if_needed();
-        return m_children;
-    }
-
-    virtual const ManualNode* parent() const override { return nullptr; }
-    virtual String name() const override { return m_full_name; }
-    virtual bool is_open() const override { return m_open; }
-    void set_open(bool open);
-
-    const String& section_name() const { return m_section; }
-    String path() const;
-
-private:
-    void reify_if_needed() const;
-
-    String m_section;
-    String m_full_name;
-    mutable NonnullOwnPtrVector<ManualNode> m_children;
-    mutable bool m_reified { false };
-    bool m_open { false };
-};
diff --git a/Applications/Help/main.cpp b/Applications/Help/main.cpp
deleted file mode 100644
index d5a6405fbf..0000000000
--- a/Applications/Help/main.cpp
+++ /dev/null
@@ -1,312 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "History.h"
-#include "ManualModel.h"
-#include <AK/URL.h>
-#include <LibCore/ArgsParser.h>
-#include <LibCore/File.h>
-#include <LibDesktop/Launcher.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/FilteringProxyModel.h>
-#include <LibGUI/ListView.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/Splitter.h>
-#include <LibGUI/TabWidget.h>
-#include <LibGUI/TextBox.h>
-#include <LibGUI/ToolBar.h>
-#include <LibGUI/ToolBarContainer.h>
-#include <LibGUI/TreeView.h>
-#include <LibGUI/Window.h>
-#include <LibMarkdown/Document.h>
-#include <LibWeb/OutOfProcessWebView.h>
-#include <libgen.h>
-#include <stdio.h>
-#include <string.h>
-
-int main(int argc, char* argv[])
-{
-    if (pledge("stdio shared_buffer accept rpath unix cpath fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio shared_buffer accept rpath unix", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/usr/share/man", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/tmp/portal/launch", "rw") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/tmp/portal/webcontent", "rw") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    unveil(nullptr, nullptr);
-
-    const char* start_page = nullptr;
-
-    Core::ArgsParser args_parser;
-    args_parser.add_positional_argument(start_page, "Page to open at launch", "page", Core::ArgsParser::Required::No);
-
-    args_parser.parse(argc, argv);
-
-    auto app_icon = GUI::Icon::default_icon("app-help");
-
-    auto window = GUI::Window::construct();
-    window->set_icon(app_icon.bitmap_for_size(16));
-    window->set_title("Help");
-    window->resize(570, 500);
-
-    auto& widget = window->set_main_widget<GUI::Widget>();
-    widget.set_layout<GUI::VerticalBoxLayout>();
-    widget.set_fill_with_background_color(true);
-    widget.layout()->set_spacing(2);
-
-    auto& toolbar_container = widget.add<GUI::ToolBarContainer>();
-    auto& toolbar = toolbar_container.add<GUI::ToolBar>();
-
-    auto& splitter = widget.add<GUI::HorizontalSplitter>();
-
-    auto model = ManualModel::create();
-
-    auto& left_tab_bar = splitter.add<GUI::TabWidget>();
-    auto& tree_view_container = left_tab_bar.add_tab<GUI::Widget>("Browse");
-    tree_view_container.set_layout<GUI::VerticalBoxLayout>();
-    tree_view_container.layout()->set_margins({ 4, 4, 4, 4 });
-    auto& tree_view = tree_view_container.add<GUI::TreeView>();
-    auto& search_view = left_tab_bar.add_tab<GUI::Widget>("Search");
-    search_view.set_layout<GUI::VerticalBoxLayout>();
-    search_view.layout()->set_margins({ 4, 4, 4, 4 });
-    auto& search_box = search_view.add<GUI::TextBox>();
-    auto& search_list_view = search_view.add<GUI::ListView>();
-    search_box.set_fixed_height(20);
-    search_box.set_placeholder("Search...");
-    search_box.on_change = [&] {
-        if (auto model = search_list_view.model()) {
-            auto& search_model = *static_cast<GUI::FilteringProxyModel*>(model);
-            search_model.set_filter_term(search_box.text());
-            search_model.update();
-        }
-    };
-    search_list_view.set_model(GUI::FilteringProxyModel::construct(model));
-    search_list_view.model()->update();
-
-    tree_view.set_model(model);
-    left_tab_bar.set_fixed_width(200);
-
-    auto& page_view = splitter.add<Web::OutOfProcessWebView>();
-
-    History history;
-
-    RefPtr<GUI::Action> go_back_action;
-    RefPtr<GUI::Action> go_forward_action;
-
-    auto update_actions = [&]() {
-        go_back_action->set_enabled(history.can_go_back());
-        go_forward_action->set_enabled(history.can_go_forward());
-    };
-
-    auto open_page = [&](const String& path) {
-        if (path.is_null()) {
-            window->set_title("Help");
-            page_view.load_empty_document();
-            return;
-        }
-
-        auto source_result = model->page_view(path);
-        if (source_result.is_error()) {
-            GUI::MessageBox::show(window, source_result.error().string(), "Failed to open man page", GUI::MessageBox::Type::Error);
-            return;
-        }
-
-        auto source = source_result.value();
-        String html;
-        {
-            auto md_document = Markdown::Document::parse(source);
-            ASSERT(md_document);
-            html = md_document->render_to_html();
-        }
-
-        auto url = URL::create_with_file_protocol(path);
-        page_view.load_html(html, url);
-
-        auto tree_view_index = model->index_from_path(path);
-        if (tree_view_index.has_value())
-            tree_view.expand_tree(tree_view_index.value().parent());
-
-        String page_and_section = model->page_and_section(tree_view_index.value());
-        window->set_title(String::formatted("{} - Help", page_and_section));
-    };
-
-    tree_view.on_selection_change = [&] {
-        String path = model->page_path(tree_view.selection().first());
-        history.push(path);
-        update_actions();
-        open_page(path);
-    };
-
-    tree_view.on_toggle = [&](const GUI::ModelIndex& index, const bool open) {
-        model->update_section_node_on_toggle(index, open);
-    };
-
-    auto open_external = [&](auto& url) {
-        if (!Desktop::Launcher::open(url)) {
-            GUI::MessageBox::show(window,
-                String::formatted("The link to '{}' could not be opened.", url),
-                "Failed to open link",
-                GUI::MessageBox::Type::Error);
-        }
-    };
-    search_list_view.on_selection = [&](auto index) {
-        if (!index.is_valid())
-            return;
-
-        if (auto model = search_list_view.model()) {
-            auto& search_model = *static_cast<GUI::FilteringProxyModel*>(model);
-            index = search_model.map(index);
-        } else {
-            page_view.load_empty_document();
-            return;
-        }
-        String path = model->page_path(index);
-        if (path.is_null()) {
-            page_view.load_empty_document();
-            return;
-        }
-        tree_view.selection().clear();
-        tree_view.selection().add(index);
-        history.push(path);
-        update_actions();
-        open_page(path);
-    };
-
-    page_view.on_link_click = [&](auto& url, auto&, unsigned) {
-        if (url.protocol() != "file") {
-            open_external(url);
-            return;
-        }
-        auto path = Core::File::real_path_for(url.path());
-        if (!path.starts_with("/usr/share/man/")) {
-            open_external(url);
-            return;
-        }
-        auto tree_view_index = model->index_from_path(path);
-        if (tree_view_index.has_value()) {
-            dbgln("Found path _{}_ in model at index {}", path, tree_view_index.value());
-            tree_view.selection().set(tree_view_index.value());
-            return;
-        }
-        history.push(path);
-        update_actions();
-        open_page(path);
-    };
-
-    go_back_action = GUI::CommonActions::make_go_back_action([&](auto&) {
-        history.go_back();
-        update_actions();
-        open_page(history.current());
-    });
-
-    go_forward_action = GUI::CommonActions::make_go_forward_action([&](auto&) {
-        history.go_forward();
-        update_actions();
-        open_page(history.current());
-    });
-
-    go_back_action->set_enabled(false);
-    go_forward_action->set_enabled(false);
-
-    auto go_home_action = GUI::CommonActions::make_go_home_action([&](auto&) {
-        String path = "/usr/share/man/man7/Help-index.md";
-        history.push(path);
-        update_actions();
-        open_page(path);
-    });
-
-    toolbar.add_action(*go_back_action);
-    toolbar.add_action(*go_forward_action);
-    toolbar.add_action(*go_home_action);
-
-    auto menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = menubar->add_menu("Help");
-    app_menu.add_action(GUI::CommonActions::make_about_action("Help", app_icon, window));
-    app_menu.add_separator();
-    app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
-        GUI::Application::the()->quit();
-    }));
-
-    auto& go_menu = menubar->add_menu("Go");
-    go_menu.add_action(*go_back_action);
-    go_menu.add_action(*go_forward_action);
-    go_menu.add_action(*go_home_action);
-
-    app->set_menubar(move(menubar));
-
-    if (start_page) {
-        URL url = URL::create_with_url_or_path(start_page);
-        if (url.is_valid() && url.path().ends_with(".md")) {
-            history.push(url.path());
-            update_actions();
-            open_page(url.path());
-        } else {
-            left_tab_bar.set_active_widget(&search_view);
-            search_box.set_text(start_page);
-            if (auto model = search_list_view.model()) {
-                auto& search_model = *static_cast<GUI::FilteringProxyModel*>(model);
-                search_model.set_filter_term(search_box.text());
-            }
-        }
-    } else {
-        go_home_action->activate();
-    }
-
-    window->set_focused_widget(&left_tab_bar);
-    window->show();
-
-    return app->exec();
-}
diff --git a/Applications/HexEditor/CMakeLists.txt b/Applications/HexEditor/CMakeLists.txt
deleted file mode 100644
index ebe134863f..0000000000
--- a/Applications/HexEditor/CMakeLists.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-set(SOURCES
-    HexEditor.cpp
-    HexEditorWidget.cpp
-    main.cpp
-)
-
-serenity_app(HexEditor ICON app-hexeditor)
-target_link_libraries(HexEditor LibGUI)
diff --git a/Applications/HexEditor/HexEditor.cpp b/Applications/HexEditor/HexEditor.cpp
deleted file mode 100644
index f4999661f8..0000000000
--- a/Applications/HexEditor/HexEditor.cpp
+++ /dev/null
@@ -1,583 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "HexEditor.h"
-#include <AK/StringBuilder.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/Clipboard.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/ScrollBar.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/FontDatabase.h>
-#include <LibGfx/Palette.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <unistd.h>
-
-HexEditor::HexEditor()
-{
-    set_focus_policy(GUI::FocusPolicy::StrongFocus);
-    set_scrollbars_enabled(true);
-    set_font(Gfx::FontDatabase::default_fixed_width_font());
-    set_background_role(ColorRole::Base);
-    set_foreground_role(ColorRole::BaseText);
-    vertical_scrollbar().set_step(line_height());
-}
-
-HexEditor::~HexEditor()
-{
-}
-
-void HexEditor::set_readonly(bool readonly)
-{
-    if (m_readonly == readonly)
-        return;
-    m_readonly = readonly;
-}
-
-void HexEditor::set_buffer(const ByteBuffer& buffer)
-{
-    m_buffer = buffer;
-    set_content_length(buffer.size());
-    m_tracked_changes.clear();
-    m_position = 0;
-    m_byte_position = 0;
-    update();
-    update_status();
-}
-
-void HexEditor::fill_selection(u8 fill_byte)
-{
-    if (!has_selection())
-        return;
-
-    for (int i = m_selection_start; i <= m_selection_end; i++) {
-        m_tracked_changes.set(i, m_buffer.data()[i]);
-        m_buffer.data()[i] = fill_byte;
-    }
-
-    update();
-    did_change();
-}
-
-void HexEditor::set_position(int position)
-{
-    if (position > static_cast<int>(m_buffer.size()))
-        return;
-
-    m_position = position;
-    m_byte_position = 0;
-    scroll_position_into_view(position);
-    update_status();
-}
-
-bool HexEditor::write_to_file(const StringView& path)
-{
-    if (m_buffer.is_empty())
-        return true;
-
-    int fd = open_with_path_length(path.characters_without_null_termination(), path.length(), O_WRONLY | O_CREAT | O_TRUNC, 0666);
-    if (fd < 0) {
-        perror("open");
-        return false;
-    }
-
-    int rc = ftruncate(fd, m_buffer.size());
-    if (rc < 0) {
-        perror("ftruncate");
-        return false;
-    }
-
-    ssize_t nwritten = write(fd, m_buffer.data(), m_buffer.size());
-    if (nwritten < 0) {
-        perror("write");
-        close(fd);
-        return false;
-    }
-
-    if (static_cast<size_t>(nwritten) == m_buffer.size()) {
-        m_tracked_changes.clear();
-        update();
-    }
-
-    close(fd);
-    return true;
-}
-
-bool HexEditor::copy_selected_hex_to_clipboard()
-{
-    if (!has_selection())
-        return false;
-
-    StringBuilder output_string_builder;
-    for (int i = m_selection_start; i <= m_selection_end; i++)
-        output_string_builder.appendff("{:02X} ", m_buffer.data()[i]);
-
-    GUI::Clipboard::the().set_plain_text(output_string_builder.to_string());
-    return true;
-}
-
-bool HexEditor::copy_selected_text_to_clipboard()
-{
-    if (!has_selection())
-        return false;
-
-    StringBuilder output_string_builder;
-    for (int i = m_selection_start; i <= m_selection_end; i++)
-        output_string_builder.append(isprint(m_buffer.data()[i]) ? m_buffer[i] : '.');
-
-    GUI::Clipboard::the().set_plain_text(output_string_builder.to_string());
-    return true;
-}
-
-bool HexEditor::copy_selected_hex_to_clipboard_as_c_code()
-{
-    if (!has_selection())
-        return false;
-
-    StringBuilder output_string_builder;
-    output_string_builder.appendff("unsigned char raw_data[{}] = {{\n", (m_selection_end - m_selection_start) + 1);
-    output_string_builder.append("    ");
-    for (int i = m_selection_start, j = 1; i <= m_selection_end; i++, j++) {
-        output_string_builder.appendff("{:#02X}", m_buffer.data()[i]);
-        if (i != m_selection_end)
-            output_string_builder.append(", ");
-        if ((j % 12) == 0) {
-            output_string_builder.append("\n");
-            output_string_builder.append("    ");
-        }
-    }
-    output_string_builder.append("\n};\n");
-
-    GUI::Clipboard::the().set_plain_text(output_string_builder.to_string());
-    return true;
-}
-
-void HexEditor::set_bytes_per_row(int bytes_per_row)
-{
-    m_bytes_per_row = bytes_per_row;
-    set_content_size({ offset_margin_width() + (m_bytes_per_row * (character_width() * 3)) + 10 + (m_bytes_per_row * character_width()) + 20, total_rows() * line_height() + 10 });
-    update();
-}
-
-void HexEditor::set_content_length(int length)
-{
-    if (length == m_content_length)
-        return;
-    m_content_length = length;
-    set_content_size({ offset_margin_width() + (m_bytes_per_row * (character_width() * 3)) + 10 + (m_bytes_per_row * character_width()) + 20, total_rows() * line_height() + 10 });
-}
-
-void HexEditor::mousedown_event(GUI::MouseEvent& event)
-{
-    if (event.button() != GUI::MouseButton::Left) {
-        return;
-    }
-
-    auto absolute_x = horizontal_scrollbar().value() + event.x();
-    auto absolute_y = vertical_scrollbar().value() + event.y();
-
-    auto hex_start_x = frame_thickness() + 90;
-    auto hex_start_y = frame_thickness() + 5;
-    auto hex_end_x = hex_start_x + (bytes_per_row() * (character_width() * 3));
-    auto hex_end_y = hex_start_y + 5 + (total_rows() * line_height());
-
-    auto text_start_x = frame_thickness() + 100 + (bytes_per_row() * (character_width() * 3));
-    auto text_start_y = frame_thickness() + 5;
-    auto text_end_x = text_start_x + (bytes_per_row() * character_width());
-    auto text_end_y = text_start_y + 5 + (total_rows() * line_height());
-
-    if (absolute_x >= hex_start_x && absolute_x <= hex_end_x && absolute_y >= hex_start_y && absolute_y <= hex_end_y) {
-        auto byte_x = (absolute_x - hex_start_x) / (character_width() * 3);
-        auto byte_y = (absolute_y - hex_start_y) / line_height();
-        auto offset = (byte_y * m_bytes_per_row) + byte_x;
-
-        if (offset < 0 || offset >= static_cast<int>(m_buffer.size()))
-            return;
-
-#ifdef HEX_DEBUG
-        outln("HexEditor::mousedown_event(hex): offset={}", offset);
-#endif
-
-        m_edit_mode = EditMode::Hex;
-        m_byte_position = 0;
-        m_position = offset;
-        m_in_drag_select = true;
-        m_selection_start = offset;
-        m_selection_end = offset;
-        update();
-        update_status();
-    }
-
-    if (absolute_x >= text_start_x && absolute_x <= text_end_x && absolute_y >= text_start_y && absolute_y <= text_end_y) {
-        auto byte_x = (absolute_x - text_start_x) / character_width();
-        auto byte_y = (absolute_y - text_start_y) / line_height();
-        auto offset = (byte_y * m_bytes_per_row) + byte_x;
-
-        if (offset < 0 || offset >= static_cast<int>(m_buffer.size()))
-            return;
-
-#ifdef HEX_DEBUG
-        outln("HexEditor::mousedown_event(text): offset={}", offset);
-#endif
-
-        m_position = offset;
-        m_byte_position = 0;
-        m_in_drag_select = true;
-        m_selection_start = offset;
-        m_selection_end = offset;
-        m_edit_mode = EditMode::Text;
-        update();
-        update_status();
-    }
-}
-
-void HexEditor::mousemove_event(GUI::MouseEvent& event)
-{
-    auto absolute_x = horizontal_scrollbar().value() + event.x();
-    auto absolute_y = vertical_scrollbar().value() + event.y();
-
-    auto hex_start_x = frame_thickness() + 90;
-    auto hex_start_y = frame_thickness() + 5;
-    auto hex_end_x = hex_start_x + (bytes_per_row() * (character_width() * 3));
-    auto hex_end_y = hex_start_y + 5 + (total_rows() * line_height());
-
-    auto text_start_x = frame_thickness() + 100 + (bytes_per_row() * (character_width() * 3));
-    auto text_start_y = frame_thickness() + 5;
-    auto text_end_x = text_start_x + (bytes_per_row() * character_width());
-    auto text_end_y = text_start_y + 5 + (total_rows() * line_height());
-
-    if ((absolute_x >= hex_start_x && absolute_x <= hex_end_x
-            && absolute_y >= hex_start_y && absolute_y <= hex_end_y)
-        || (absolute_x >= text_start_x && absolute_x <= text_end_x
-            && absolute_y >= text_start_y && absolute_y <= text_end_y)) {
-        set_override_cursor(Gfx::StandardCursor::IBeam);
-    } else {
-        set_override_cursor(Gfx::StandardCursor::None);
-    }
-
-    if (m_in_drag_select) {
-        if (absolute_x >= hex_start_x && absolute_x <= hex_end_x && absolute_y >= hex_start_y && absolute_y <= hex_end_y) {
-            auto byte_x = (absolute_x - hex_start_x) / (character_width() * 3);
-            auto byte_y = (absolute_y - hex_start_y) / line_height();
-            auto offset = (byte_y * m_bytes_per_row) + byte_x;
-
-            if (offset < 0 || offset > static_cast<int>(m_buffer.size()))
-                return;
-
-            m_selection_end = offset;
-            scroll_position_into_view(offset);
-        }
-
-        if (absolute_x >= text_start_x && absolute_x <= text_end_x && absolute_y >= text_start_y && absolute_y <= text_end_y) {
-            auto byte_x = (absolute_x - text_start_x) / character_width();
-            auto byte_y = (absolute_y - text_start_y) / line_height();
-            auto offset = (byte_y * m_bytes_per_row) + byte_x;
-            if (offset < 0 || offset > static_cast<int>(m_buffer.size()))
-                return;
-
-            m_selection_end = offset;
-            scroll_position_into_view(offset);
-        }
-        update_status();
-        update();
-        return;
-    }
-}
-
-void HexEditor::mouseup_event(GUI::MouseEvent& event)
-{
-    if (event.button() == GUI::MouseButton::Left) {
-        if (m_in_drag_select) {
-            if (m_selection_end < m_selection_start) {
-                // lets flip these around
-                auto start = m_selection_end;
-                m_selection_end = m_selection_start;
-                m_selection_start = start;
-            }
-            m_in_drag_select = false;
-        }
-        update();
-        update_status();
-    }
-}
-
-void HexEditor::scroll_position_into_view(int position)
-{
-    int y = position / bytes_per_row();
-    int x = position % bytes_per_row();
-    Gfx::IntRect rect {
-        frame_thickness() + offset_margin_width() + (x * (character_width() * 3)) + 10,
-        frame_thickness() + 5 + (y * line_height()),
-        (character_width() * 3),
-        line_height() - m_line_spacing
-    };
-    scroll_into_view(rect, true, true);
-}
-
-void HexEditor::keydown_event(GUI::KeyEvent& event)
-{
-#ifdef HEX_DEBUG
-    outln("HexEditor::keydown_event key={}", static_cast<u8>(event.key()));
-#endif
-
-    if (event.key() == KeyCode::Key_Up) {
-        if (m_position - bytes_per_row() >= 0) {
-            m_position -= bytes_per_row();
-            m_byte_position = 0;
-            scroll_position_into_view(m_position);
-            update();
-            update_status();
-        }
-        return;
-    }
-
-    if (event.key() == KeyCode::Key_Down) {
-        if (m_position + bytes_per_row() < static_cast<int>(m_buffer.size())) {
-            m_position += bytes_per_row();
-            m_byte_position = 0;
-            scroll_position_into_view(m_position);
-            update();
-            update_status();
-        }
-        return;
-    }
-
-    if (event.key() == KeyCode::Key_Left) {
-        if (m_position - 1 >= 0) {
-            m_position--;
-            m_byte_position = 0;
-            scroll_position_into_view(m_position);
-            update();
-            update_status();
-        }
-        return;
-    }
-
-    if (event.key() == KeyCode::Key_Right) {
-        if (m_position + 1 < static_cast<int>(m_buffer.size())) {
-            m_position++;
-            m_byte_position = 0;
-            scroll_position_into_view(m_position);
-            update();
-            update_status();
-        }
-        return;
-    }
-
-    if (event.key() == KeyCode::Key_Backspace) {
-        if (m_position > 0) {
-            m_position--;
-            m_byte_position = 0;
-            scroll_position_into_view(m_position);
-            update();
-            update_status();
-        }
-        return;
-    }
-
-    if (!is_readonly() && !event.ctrl() && !event.alt() && !event.text().is_empty()) {
-        if (m_edit_mode == EditMode::Hex) {
-            hex_mode_keydown_event(event);
-        } else {
-            text_mode_keydown_event(event);
-        }
-    }
-}
-
-void HexEditor::hex_mode_keydown_event(GUI::KeyEvent& event)
-{
-    if ((event.key() >= KeyCode::Key_0 && event.key() <= KeyCode::Key_9) || (event.key() >= KeyCode::Key_A && event.key() <= KeyCode::Key_F)) {
-        if (m_buffer.is_empty())
-            return;
-        ASSERT(m_position >= 0);
-        ASSERT(m_position < static_cast<int>(m_buffer.size()));
-
-        // yes, this is terrible... but it works.
-        auto value = (event.key() >= KeyCode::Key_0 && event.key() <= KeyCode::Key_9)
-            ? event.key() - KeyCode::Key_0
-            : (event.key() - KeyCode::Key_A) + 0xA;
-
-        if (m_byte_position == 0) {
-            m_tracked_changes.set(m_position, m_buffer.data()[m_position]);
-            m_buffer.data()[m_position] = value << 4 | (m_buffer.data()[m_position] & 0xF); // shift new value left 4 bits, OR with existing last 4 bits
-            m_byte_position++;
-        } else {
-            m_buffer.data()[m_position] = (m_buffer.data()[m_position] & 0xF0) | value; // save the first 4 bits, OR the new value in the last 4
-            if (m_position + 1 < static_cast<int>(m_buffer.size()))
-                m_position++;
-            m_byte_position = 0;
-        }
-
-        update();
-        update_status();
-        did_change();
-    }
-}
-
-void HexEditor::text_mode_keydown_event(GUI::KeyEvent& event)
-{
-    if (m_buffer.is_empty())
-        return;
-    ASSERT(m_position >= 0);
-    ASSERT(m_position < static_cast<int>(m_buffer.size()));
-
-    if (event.code_point() == 0) // This is a control key
-        return;
-
-    m_tracked_changes.set(m_position, m_buffer.data()[m_position]);
-    m_buffer.data()[m_position] = event.code_point();
-    if (m_position + 1 < static_cast<int>(m_buffer.size()))
-        m_position++;
-    m_byte_position = 0;
-
-    update();
-    update_status();
-    did_change();
-}
-
-void HexEditor::update_status()
-{
-    if (on_status_change)
-        on_status_change(m_position, m_edit_mode, m_selection_start, m_selection_end);
-}
-
-void HexEditor::did_change()
-{
-    if (on_change)
-        on_change();
-}
-
-void HexEditor::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(widget_inner_rect());
-    painter.add_clip_rect(event.rect());
-    painter.fill_rect(event.rect(), palette().color(background_role()));
-
-    if (m_buffer.is_empty())
-        return;
-
-    painter.translate(frame_thickness(), frame_thickness());
-    painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value());
-
-    Gfx::IntRect offset_clip_rect {
-        0,
-        vertical_scrollbar().value(),
-        85,
-        height() - height_occupied_by_horizontal_scrollbar() //(total_rows() * line_height()) + 5
-    };
-    painter.fill_rect(offset_clip_rect, palette().ruler());
-    painter.draw_line(offset_clip_rect.top_right(), offset_clip_rect.bottom_right(), palette().ruler_border());
-
-    auto margin_and_hex_width = offset_margin_width() + (m_bytes_per_row * (character_width() * 3)) + 15;
-    painter.draw_line({ margin_and_hex_width, 0 },
-        { margin_and_hex_width, vertical_scrollbar().value() + (height() - height_occupied_by_horizontal_scrollbar()) },
-        palette().ruler_border());
-
-    auto view_height = (height() - height_occupied_by_horizontal_scrollbar());
-    auto min_row = max(0, vertical_scrollbar().value() / line_height());              // if below 0 then use 0
-    auto max_row = min(total_rows(), min_row + ceil_div(view_height, line_height())); // if above calculated rows, use calculated rows
-
-    // paint offsets
-    for (int i = min_row; i < max_row; i++) {
-        Gfx::IntRect side_offset_rect {
-            frame_thickness() + 5,
-            frame_thickness() + 5 + (i * line_height()),
-            width() - width_occupied_by_vertical_scrollbar(),
-            height() - height_occupied_by_horizontal_scrollbar()
-        };
-
-        bool is_current_line = (m_position / bytes_per_row()) == i;
-        auto line = String::formatted("{:#08X}", i * bytes_per_row());
-        painter.draw_text(
-            side_offset_rect,
-            line,
-            is_current_line ? Gfx::FontDatabase::default_bold_font() : font(),
-            Gfx::TextAlignment::TopLeft,
-            is_current_line ? palette().ruler_active_text() : palette().ruler_inactive_text());
-    }
-
-    for (int i = min_row; i < max_row; i++) {
-        for (int j = 0; j < bytes_per_row(); j++) {
-            auto byte_position = (i * bytes_per_row()) + j;
-            if (byte_position >= static_cast<int>(m_buffer.size()))
-                return;
-
-            Color text_color = palette().color(foreground_role());
-            if (m_tracked_changes.contains(byte_position)) {
-                text_color = Color::Red;
-            }
-
-            auto highlight_flag = false;
-            if (m_selection_start > -1 && m_selection_end > -1) {
-                if (byte_position >= m_selection_start && byte_position <= m_selection_end) {
-                    highlight_flag = true;
-                }
-                if (byte_position >= m_selection_end && byte_position <= m_selection_start) {
-                    highlight_flag = true;
-                }
-            }
-
-            Gfx::IntRect hex_display_rect {
-                frame_thickness() + offset_margin_width() + (j * (character_width() * 3)) + 10,
-                frame_thickness() + 5 + (i * line_height()),
-                (character_width() * 3),
-                line_height() - m_line_spacing
-            };
-            if (highlight_flag) {
-                painter.fill_rect(hex_display_rect, palette().selection());
-                text_color = text_color == Color::Red ? Color::from_rgb(0xFFC0CB) : palette().selection_text();
-            } else if (byte_position == m_position) {
-                painter.fill_rect(hex_display_rect, palette().inactive_selection());
-                text_color = palette().inactive_selection_text();
-            }
-
-            auto line = String::formatted("{:02X}", m_buffer[byte_position]);
-            painter.draw_text(hex_display_rect, line, Gfx::TextAlignment::TopLeft, text_color);
-
-            Gfx::IntRect text_display_rect {
-                frame_thickness() + offset_margin_width() + (bytes_per_row() * (character_width() * 3)) + (j * character_width()) + 20,
-                frame_thickness() + 5 + (i * line_height()),
-                character_width(),
-                line_height() - m_line_spacing
-            };
-            // selection highlighting.
-            if (highlight_flag) {
-                painter.fill_rect(text_display_rect, palette().selection());
-            } else if (byte_position == m_position) {
-                painter.fill_rect(text_display_rect, palette().inactive_selection());
-            }
-
-            painter.draw_text(text_display_rect, String::formatted("{:c}", isprint(m_buffer[byte_position]) ? m_buffer[byte_position] : '.'), Gfx::TextAlignment::TopLeft, text_color);
-        }
-    }
-}
diff --git a/Applications/HexEditor/HexEditor.h b/Applications/HexEditor/HexEditor.h
deleted file mode 100644
index e47eedeec3..0000000000
--- a/Applications/HexEditor/HexEditor.h
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/ByteBuffer.h>
-#include <AK/Function.h>
-#include <AK/HashMap.h>
-#include <AK/NonnullOwnPtrVector.h>
-#include <AK/NonnullRefPtrVector.h>
-#include <AK/StdLibExtras.h>
-#include <LibGUI/ScrollableWidget.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/TextAlignment.h>
-
-class HexEditor : public GUI::ScrollableWidget {
-    C_OBJECT(HexEditor)
-public:
-    enum EditMode {
-        Hex,
-        Text
-    };
-
-    virtual ~HexEditor() override;
-
-    bool is_readonly() const { return m_readonly; }
-    void set_readonly(bool);
-
-    void set_buffer(const ByteBuffer&);
-    void fill_selection(u8 fill_byte);
-    bool write_to_file(const StringView& path);
-
-    bool has_selection() const { return !(m_selection_start == -1 || m_selection_end == -1 || (m_selection_end - m_selection_start) < 0 || m_buffer.is_empty()); }
-    bool copy_selected_text_to_clipboard();
-    bool copy_selected_hex_to_clipboard();
-    bool copy_selected_hex_to_clipboard_as_c_code();
-
-    int bytes_per_row() const { return m_bytes_per_row; }
-    void set_bytes_per_row(int);
-
-    void set_position(int position);
-
-    Function<void(int, EditMode, int, int)> on_status_change; // position, edit mode, selection start, selection end
-    Function<void()> on_change;
-
-protected:
-    HexEditor();
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void mousedown_event(GUI::MouseEvent&) override;
-    virtual void mouseup_event(GUI::MouseEvent&) override;
-    virtual void mousemove_event(GUI::MouseEvent&) override;
-    virtual void keydown_event(GUI::KeyEvent&) override;
-
-private:
-    bool m_readonly { false };
-    int m_line_spacing { 4 };
-    int m_content_length { 0 };
-    int m_bytes_per_row { 16 };
-    ByteBuffer m_buffer;
-    bool m_in_drag_select { false };
-    int m_selection_start { 0 };
-    int m_selection_end { 0 };
-    HashMap<int, u8> m_tracked_changes;
-    int m_position { 0 };
-    int m_byte_position { 0 }; // 0 or 1
-    EditMode m_edit_mode { Hex };
-
-    void scroll_position_into_view(int position);
-
-    int total_rows() const { return ceil_div(m_content_length, m_bytes_per_row); }
-    int line_height() const { return font().glyph_height() + m_line_spacing; }
-    int character_width() const { return font().glyph_width('W'); }
-    int offset_margin_width() const { return 80; }
-
-    void hex_mode_keydown_event(GUI::KeyEvent&);
-    void text_mode_keydown_event(GUI::KeyEvent&);
-
-    void set_content_length(int); // I might make this public if I add fetching data on demand.
-    void update_status();
-    void did_change();
-};
diff --git a/Applications/HexEditor/HexEditorWidget.cpp b/Applications/HexEditor/HexEditorWidget.cpp
deleted file mode 100644
index e6f6711884..0000000000
--- a/Applications/HexEditor/HexEditorWidget.cpp
+++ /dev/null
@@ -1,241 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "HexEditorWidget.h"
-#include <AK/Optional.h>
-#include <AK/StringBuilder.h>
-#include <LibCore/File.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/InputBox.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/StatusBar.h>
-#include <LibGUI/TextBox.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGUI/ToolBar.h>
-#include <stdio.h>
-#include <string.h>
-
-HexEditorWidget::HexEditorWidget()
-{
-    set_fill_with_background_color(true);
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_spacing(2);
-
-    m_editor = add<HexEditor>();
-
-    m_editor->on_status_change = [this](int position, HexEditor::EditMode edit_mode, int selection_start, int selection_end) {
-        m_statusbar->set_text(0, String::formatted("Offset: {:#08X}", position));
-        m_statusbar->set_text(1, String::formatted("Edit Mode: {}", edit_mode == HexEditor::EditMode::Hex ? "Hex" : "Text"));
-        m_statusbar->set_text(2, String::formatted("Selection Start: {}", selection_start));
-        m_statusbar->set_text(3, String::formatted("Selection End: {}", selection_end));
-        m_statusbar->set_text(4, String::formatted("Selected Bytes: {}", abs(selection_end - selection_start) + 1));
-    };
-
-    m_editor->on_change = [this] {
-        bool was_dirty = m_document_dirty;
-        m_document_dirty = true;
-        if (!was_dirty)
-            update_title();
-    };
-
-    m_statusbar = add<GUI::StatusBar>(5);
-
-    m_new_action = GUI::Action::create("New", { Mod_Ctrl, Key_N }, Gfx::Bitmap::load_from_file("/res/icons/16x16/new.png"), [this](const GUI::Action&) {
-        if (m_document_dirty) {
-            if (GUI::MessageBox::show(window(), "Save changes to current file first?", "Warning", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::OKCancel) != GUI::Dialog::ExecResult::ExecOK)
-                return;
-            m_save_action->activate();
-        }
-
-        String value;
-        if (GUI::InputBox::show(value, window(), "Enter new file size:", "New file size") == GUI::InputBox::ExecOK && !value.is_empty()) {
-            auto file_size = value.to_int();
-            if (file_size.has_value() && file_size.value() > 0) {
-                m_document_dirty = false;
-                m_editor->set_buffer(ByteBuffer::create_zeroed(file_size.value()));
-                set_path(LexicalPath());
-                update_title();
-            } else {
-                GUI::MessageBox::show(window(), "Invalid file size entered.", "Error", GUI::MessageBox::Type::Error);
-            }
-        }
-    });
-
-    m_open_action = GUI::CommonActions::make_open_action([this](auto&) {
-        Optional<String> open_path = GUI::FilePicker::get_open_filepath(window());
-
-        if (!open_path.has_value())
-            return;
-
-        open_file(open_path.value());
-    });
-
-    m_save_action = GUI::CommonActions::make_save_action([&](auto&) {
-        if (!m_path.is_empty()) {
-            if (!m_editor->write_to_file(m_path)) {
-                GUI::MessageBox::show(window(), "Unable to save file.\n", "Error", GUI::MessageBox::Type::Error);
-            } else {
-                m_document_dirty = false;
-                update_title();
-            }
-            return;
-        }
-
-        m_save_as_action->activate();
-    });
-
-    m_save_as_action = GUI::CommonActions::make_save_as_action([&](auto&) {
-        Optional<String> save_path = GUI::FilePicker::get_save_filepath(window(), m_name.is_null() ? "Untitled" : m_name, m_extension.is_null() ? "bin" : m_extension);
-        if (!save_path.has_value())
-            return;
-
-        if (!m_editor->write_to_file(save_path.value())) {
-            GUI::MessageBox::show(window(), "Unable to save file.\n", "Error", GUI::MessageBox::Type::Error);
-            return;
-        }
-
-        m_document_dirty = false;
-        set_path(LexicalPath(save_path.value()));
-        dbgln("Wrote document to {}", save_path.value());
-    });
-
-    auto menubar = GUI::MenuBar::construct();
-    auto& app_menu = menubar->add_menu("Hex Editor");
-    app_menu.add_action(*m_new_action);
-    app_menu.add_action(*m_open_action);
-    app_menu.add_action(*m_save_action);
-    app_menu.add_action(*m_save_as_action);
-    app_menu.add_separator();
-    app_menu.add_action(GUI::CommonActions::make_quit_action([this](auto&) {
-        if (!request_close())
-            return;
-        GUI::Application::the()->quit();
-    }));
-
-    m_goto_decimal_offset_action = GUI::Action::create("Go To Offset (Decimal)...", { Mod_Ctrl | Mod_Shift, Key_G }, Gfx::Bitmap::load_from_file("/res/icons/16x16/go-forward.png"), [this](const GUI::Action&) {
-        String value;
-        if (GUI::InputBox::show(value, window(), "Enter Decimal offset:", "Go To") == GUI::InputBox::ExecOK && !value.is_empty()) {
-            auto new_offset = value.to_int();
-            if (new_offset.has_value())
-                m_editor->set_position(new_offset.value());
-        }
-    });
-
-    m_goto_hex_offset_action = GUI::Action::create("Go To Offset (Hex)...", { Mod_Ctrl, Key_G }, Gfx::Bitmap::load_from_file("/res/icons/16x16/go-forward.png"), [this](const GUI::Action&) {
-        String value;
-        if (GUI::InputBox::show(value, window(), "Enter Hex offset:", "Go To") == GUI::InputBox::ExecOK && !value.is_empty()) {
-            auto new_offset = strtol(value.characters(), nullptr, 16);
-            m_editor->set_position(new_offset);
-        }
-    });
-
-    auto& edit_menu = menubar->add_menu("Edit");
-    edit_menu.add_action(GUI::Action::create("Fill selection...", { Mod_Ctrl, Key_B }, [&](const GUI::Action&) {
-        String value;
-        if (GUI::InputBox::show(value, window(), "Fill byte (hex):", "Fill Selection") == GUI::InputBox::ExecOK && !value.is_empty()) {
-            auto fill_byte = strtol(value.characters(), nullptr, 16);
-            m_editor->fill_selection(fill_byte);
-        }
-    }));
-    edit_menu.add_separator();
-    edit_menu.add_action(*m_goto_decimal_offset_action);
-    edit_menu.add_action(*m_goto_hex_offset_action);
-    edit_menu.add_separator();
-    edit_menu.add_action(GUI::Action::create("Copy Hex", { Mod_Ctrl, Key_C }, [&](const GUI::Action&) {
-        m_editor->copy_selected_hex_to_clipboard();
-    }));
-    edit_menu.add_action(GUI::Action::create("Copy Text", { Mod_Ctrl | Mod_Shift, Key_C }, [&](const GUI::Action&) {
-        m_editor->copy_selected_text_to_clipboard();
-    }));
-    edit_menu.add_separator();
-    edit_menu.add_action(GUI::Action::create("Copy As C Code", { Mod_Alt | Mod_Shift, Key_C }, [&](const GUI::Action&) {
-        m_editor->copy_selected_hex_to_clipboard_as_c_code();
-    }));
-
-    auto& view_menu = menubar->add_menu("View");
-    auto& bytes_per_row_menu = view_menu.add_submenu("Bytes per row");
-    for (int i = 8; i <= 32; i += 8) {
-        bytes_per_row_menu.add_action(GUI::Action::create(String::number(i), [this, i](auto&) {
-            m_editor->set_bytes_per_row(i);
-            m_editor->update();
-        }));
-    }
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Hex Editor", GUI::Icon::default_icon("Hex Editor"), window()));
-
-    GUI::Application::the()->set_menubar(move(menubar));
-
-    m_editor->set_focus(true);
-}
-
-HexEditorWidget::~HexEditorWidget()
-{
-}
-
-void HexEditorWidget::set_path(const LexicalPath& lexical_path)
-{
-    m_path = lexical_path.string();
-    m_name = lexical_path.title();
-    m_extension = lexical_path.extension();
-    update_title();
-}
-
-void HexEditorWidget::update_title()
-{
-    StringBuilder builder;
-    builder.append(m_path);
-    if (m_document_dirty)
-        builder.append(" (*)");
-    builder.append(" - Hex Editor");
-    window()->set_title(builder.to_string());
-}
-
-void HexEditorWidget::open_file(const String& path)
-{
-    auto file = Core::File::construct(path);
-    if (!file->open(Core::IODevice::ReadOnly)) {
-        GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: {}", path, strerror(errno)), "Error", GUI::MessageBox::Type::Error);
-        return;
-    }
-
-    m_document_dirty = false;
-    m_editor->set_buffer(file->read_all()); // FIXME: On really huge files, this is never going to work. Should really create a framework to fetch data from the file on-demand.
-    set_path(LexicalPath(path));
-}
-
-bool HexEditorWidget::request_close()
-{
-    if (!m_document_dirty)
-        return true;
-    auto result = GUI::MessageBox::show(window(), "The file has been modified. Quit without saving?", "Quit without saving?", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::OKCancel);
-    return result == GUI::MessageBox::ExecOK;
-}
diff --git a/Applications/HexEditor/HexEditorWidget.h b/Applications/HexEditor/HexEditorWidget.h
deleted file mode 100644
index 55152518ab..0000000000
--- a/Applications/HexEditor/HexEditorWidget.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "HexEditor.h"
-#include <AK/Function.h>
-#include <AK/LexicalPath.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-
-class HexEditor;
-
-class HexEditorWidget final : public GUI::Widget {
-    C_OBJECT(HexEditorWidget)
-public:
-    virtual ~HexEditorWidget() override;
-    void open_file(const String& path);
-    bool request_close();
-
-private:
-    HexEditorWidget();
-    void set_path(const LexicalPath& file);
-    void update_title();
-
-    RefPtr<HexEditor> m_editor;
-    String m_path;
-    String m_name;
-    String m_extension;
-    RefPtr<GUI::Action> m_new_action;
-    RefPtr<GUI::Action> m_open_action;
-    RefPtr<GUI::Action> m_save_action;
-    RefPtr<GUI::Action> m_save_as_action;
-    RefPtr<GUI::Action> m_goto_decimal_offset_action;
-    RefPtr<GUI::Action> m_goto_hex_offset_action;
-
-    RefPtr<GUI::StatusBar> m_statusbar;
-
-    bool m_document_dirty { false };
-};
diff --git a/Applications/HexEditor/main.cpp b/Applications/HexEditor/main.cpp
deleted file mode 100644
index 65e358726e..0000000000
--- a/Applications/HexEditor/main.cpp
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "HexEditorWidget.h"
-#include <LibGUI/Icon.h>
-#include <LibGfx/Bitmap.h>
-#include <stdio.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio shared_buffer accept rpath unix cpath wpath fattr thread", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio shared_buffer accept rpath cpath wpath thread", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-hexeditor");
-
-    auto window = GUI::Window::construct();
-    window->set_title("Hex Editor");
-    window->resize(640, 400);
-
-    auto& hex_editor_widget = window->set_main_widget<HexEditorWidget>();
-
-    window->on_close_request = [&]() -> GUI::Window::CloseRequestDecision {
-        if (hex_editor_widget.request_close())
-            return GUI::Window::CloseRequestDecision::Close;
-        return GUI::Window::CloseRequestDecision::StayOpen;
-    };
-
-    window->show();
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    if (argc >= 2)
-        hex_editor_widget.open_file(argv[1]);
-
-    return app->exec();
-}
diff --git a/Applications/IRCClient/CMakeLists.txt b/Applications/IRCClient/CMakeLists.txt
deleted file mode 100644
index 3926bbd5dc..0000000000
--- a/Applications/IRCClient/CMakeLists.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-set(SOURCES
-    IRCAppWindow.cpp
-    IRCChannel.cpp
-    IRCChannelMemberListModel.cpp
-    IRCClient.cpp
-    IRCLogBuffer.cpp
-    IRCQuery.cpp
-    IRCWindow.cpp
-    IRCWindowListModel.cpp
-    main.cpp
-)
-
-serenity_app(IRCClient ICON app-irc-client)
-target_link_libraries(IRCClient LibWeb LibGUI)
diff --git a/Applications/IRCClient/IRCAppWindow.cpp b/Applications/IRCClient/IRCAppWindow.cpp
deleted file mode 100644
index 8d4f931025..0000000000
--- a/Applications/IRCClient/IRCAppWindow.cpp
+++ /dev/null
@@ -1,375 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "IRCAppWindow.h"
-#include "IRCChannel.h"
-#include "IRCWindow.h"
-#include "IRCWindowListModel.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/InputBox.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/Splitter.h>
-#include <LibGUI/StackWidget.h>
-#include <LibGUI/TableView.h>
-#include <LibGUI/ToolBar.h>
-#include <LibGUI/ToolBarContainer.h>
-
-static IRCAppWindow* s_the;
-
-IRCAppWindow& IRCAppWindow::the()
-{
-    return *s_the;
-}
-
-IRCAppWindow::IRCAppWindow(String server, int port)
-    : m_client(IRCClient::construct(server, port))
-{
-    ASSERT(!s_the);
-    s_the = this;
-
-    set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-irc-client.png"));
-
-    update_title();
-    resize(600, 400);
-    setup_actions();
-    setup_menus();
-    setup_widgets();
-
-    setup_client();
-}
-
-IRCAppWindow::~IRCAppWindow()
-{
-}
-
-void IRCAppWindow::update_title()
-{
-    set_title(String::formatted("{}@{}:{} - IRC Client", m_client->nickname(), m_client->hostname(), m_client->port()));
-}
-
-void IRCAppWindow::setup_client()
-{
-    m_client->aid_create_window = [this](void* owner, IRCWindow::Type type, const String& name) {
-        return create_window(owner, type, name);
-    };
-    m_client->aid_get_active_window = [this] {
-        return static_cast<IRCWindow*>(m_container->active_widget());
-    };
-    m_client->aid_update_window_list = [this] {
-        m_window_list->model()->update();
-    };
-    m_client->on_nickname_changed = [this](const String&) {
-        update_title();
-    };
-    m_client->on_part_from_channel = [this](auto&) {
-        update_gui_actions();
-    };
-
-    if (m_client->hostname().is_empty()) {
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter server:", "Connect to server") == GUI::InputBox::ExecCancel)
-            ::exit(0);
-
-        m_client->set_server(value, 6667);
-    }
-    update_title();
-    bool success = m_client->connect();
-    ASSERT(success);
-}
-
-void IRCAppWindow::setup_actions()
-{
-    m_join_action = GUI::Action::create("Join channel", { Mod_Ctrl, Key_J }, Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-join.png"), [&](auto&) {
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter channel name:", "Join channel") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_join_action(value);
-    });
-
-    m_list_channels_action = GUI::Action::create("List channels", Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-list.png"), [&](auto&) {
-        m_client->handle_list_channels_action();
-    });
-
-    m_part_action = GUI::Action::create("Part from channel", { Mod_Ctrl, Key_P }, Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-part.png"), [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        m_client->handle_part_action(window->channel().name());
-    });
-
-    m_whois_action = GUI::Action::create("Whois user", Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-whois.png"), [&](auto&) {
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter nickname:", "IRC WHOIS lookup") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_whois_action(value);
-    });
-
-    m_open_query_action = GUI::Action::create("Open query", { Mod_Ctrl, Key_O }, Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-open-query.png"), [&](auto&) {
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter nickname:", "Open IRC query with...") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_open_query_action(value);
-    });
-
-    m_close_query_action = GUI::Action::create("Close query", { Mod_Ctrl, Key_D }, Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-close-query.png"), [](auto&) {
-        outln("FIXME: Implement close-query action");
-    });
-
-    m_change_nick_action = GUI::Action::create("Change nickname", Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-nick.png"), [this](auto&) {
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter nickname:", "Change nickname") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_change_nick_action(value);
-    });
-
-    m_change_topic_action = GUI::Action::create("Change topic", Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-topic.png"), [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter topic:", "Change topic") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_change_topic_action(window->channel().name(), value);
-    });
-
-    m_invite_user_action = GUI::Action::create("Invite user", Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-invite.png"), [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter nick:", "Invite user") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_invite_user_action(window->channel().name(), value);
-    });
-
-    m_banlist_action = GUI::Action::create("Ban list", [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        m_client->handle_banlist_action(window->channel().name());
-    });
-
-    m_voice_user_action = GUI::Action::create("Voice user", [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter nick:", "Voice user") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_voice_user_action(window->channel().name(), value);
-    });
-
-    m_devoice_user_action = GUI::Action::create("DeVoice user", [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter nick:", "DeVoice user") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_devoice_user_action(window->channel().name(), value);
-    });
-
-    m_hop_user_action = GUI::Action::create("Hop user", [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter nick:", "Hop user") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_hop_user_action(window->channel().name(), value);
-    });
-
-    m_dehop_user_action = GUI::Action::create("DeHop user", [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter nick:", "DeHop user") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_dehop_user_action(window->channel().name(), value);
-    });
-
-    m_op_user_action = GUI::Action::create("Op user", [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter nick:", "Op user") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_op_user_action(window->channel().name(), value);
-    });
-
-    m_deop_user_action = GUI::Action::create("DeOp user", [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        String value;
-        if (GUI::InputBox::show(value, this, "Enter nick:", "DeOp user") == GUI::InputBox::ExecOK && !value.is_empty())
-            m_client->handle_deop_user_action(window->channel().name(), value);
-    });
-
-    m_kick_user_action = GUI::Action::create("Kick user", [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        String nick_value;
-        if (GUI::InputBox::show(nick_value, this, "Enter nick:", "Kick user") != GUI::InputBox::ExecOK || nick_value.is_empty())
-            return;
-        String reason_value;
-        if (GUI::InputBox::show(reason_value, this, "Enter reason:", "Reason") == GUI::InputBox::ExecOK)
-            m_client->handle_kick_user_action(window->channel().name(), nick_value, reason_value.characters());
-    });
-
-    m_cycle_channel_action = GUI::Action::create("Cycle channel", [this](auto&) {
-        auto* window = m_client->current_window();
-        if (!window || window->type() != IRCWindow::Type::Channel) {
-            return;
-        }
-        m_client->handle_cycle_channel_action(window->channel().name());
-    });
-}
-
-void IRCAppWindow::setup_menus()
-{
-    auto menubar = GUI::MenuBar::construct();
-    auto& app_menu = menubar->add_menu("IRC Client");
-    app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
-        dbgln("Terminal: Quit menu activated!");
-        GUI::Application::the()->quit();
-        return;
-    }));
-
-    auto& server_menu = menubar->add_menu("Server");
-    server_menu.add_action(*m_change_nick_action);
-    server_menu.add_separator();
-    server_menu.add_action(*m_join_action);
-    server_menu.add_action(*m_list_channels_action);
-    server_menu.add_separator();
-    server_menu.add_action(*m_whois_action);
-    server_menu.add_action(*m_open_query_action);
-    server_menu.add_action(*m_close_query_action);
-
-    auto& channel_menu = menubar->add_menu("Channel");
-    channel_menu.add_action(*m_change_topic_action);
-    channel_menu.add_action(*m_invite_user_action);
-    channel_menu.add_action(*m_banlist_action);
-
-    auto& channel_control_menu = channel_menu.add_submenu("Control");
-    channel_control_menu.add_action(*m_voice_user_action);
-    channel_control_menu.add_action(*m_devoice_user_action);
-    channel_control_menu.add_action(*m_hop_user_action);
-    channel_control_menu.add_action(*m_dehop_user_action);
-    channel_control_menu.add_action(*m_op_user_action);
-    channel_control_menu.add_action(*m_deop_user_action);
-    channel_control_menu.add_separator();
-    channel_control_menu.add_action(*m_kick_user_action);
-
-    channel_menu.add_separator();
-    channel_menu.add_action(*m_cycle_channel_action);
-    channel_menu.add_action(*m_part_action);
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("IRC Client", GUI::Icon::default_icon("app-irc-client"), this));
-
-    GUI::Application::the()->set_menubar(move(menubar));
-}
-
-void IRCAppWindow::setup_widgets()
-{
-    auto& widget = set_main_widget<GUI::Widget>();
-    widget.set_fill_with_background_color(true);
-    widget.set_layout<GUI::VerticalBoxLayout>();
-    widget.layout()->set_spacing(0);
-
-    auto& toolbar_container = widget.add<GUI::ToolBarContainer>();
-    auto& toolbar = toolbar_container.add<GUI::ToolBar>();
-    toolbar.set_has_frame(false);
-    toolbar.add_action(*m_change_nick_action);
-    toolbar.add_separator();
-    toolbar.add_action(*m_join_action);
-    toolbar.add_action(*m_part_action);
-    toolbar.add_separator();
-    toolbar.add_action(*m_whois_action);
-    toolbar.add_action(*m_open_query_action);
-    toolbar.add_action(*m_close_query_action);
-
-    auto& outer_container = widget.add<GUI::Widget>();
-    outer_container.set_layout<GUI::VerticalBoxLayout>();
-    outer_container.layout()->set_margins({ 2, 0, 2, 2 });
-
-    auto& horizontal_container = outer_container.add<GUI::HorizontalSplitter>();
-
-    m_window_list = horizontal_container.add<GUI::TableView>();
-    m_window_list->set_column_headers_visible(false);
-    m_window_list->set_alternating_row_colors(false);
-    m_window_list->set_model(m_client->client_window_list_model());
-    m_window_list->set_activates_on_selection(true);
-    m_window_list->set_fixed_width(100);
-    m_window_list->on_activation = [this](auto& index) {
-        set_active_window(m_client->window_at(index.row()));
-    };
-
-    m_container = horizontal_container.add<GUI::StackWidget>();
-    m_container->on_active_widget_change = [this](auto*) {
-        update_gui_actions();
-    };
-
-    create_window(&m_client, IRCWindow::Server, "Server");
-}
-
-void IRCAppWindow::set_active_window(IRCWindow& window)
-{
-    m_container->set_active_widget(&window);
-    window.clear_unread_count();
-    auto index = m_window_list->model()->index(m_client->window_index(window));
-    m_window_list->selection().set(index);
-}
-
-void IRCAppWindow::update_gui_actions()
-{
-    auto* window = static_cast<IRCWindow*>(m_container->active_widget());
-    bool is_open_channel = window && window->type() == IRCWindow::Type::Channel && window->channel().is_open();
-    m_change_topic_action->set_enabled(is_open_channel);
-    m_invite_user_action->set_enabled(is_open_channel);
-    m_banlist_action->set_enabled(is_open_channel);
-    m_voice_user_action->set_enabled(is_open_channel);
-    m_devoice_user_action->set_enabled(is_open_channel);
-    m_hop_user_action->set_enabled(is_open_channel);
-    m_dehop_user_action->set_enabled(is_open_channel);
-    m_op_user_action->set_enabled(is_open_channel);
-    m_deop_user_action->set_enabled(is_open_channel);
-    m_kick_user_action->set_enabled(is_open_channel);
-    m_cycle_channel_action->set_enabled(is_open_channel);
-    m_part_action->set_enabled(is_open_channel);
-}
-
-NonnullRefPtr<IRCWindow> IRCAppWindow::create_window(void* owner, IRCWindow::Type type, const String& name)
-{
-    return m_container->add<IRCWindow>(m_client, owner, type, name);
-}
diff --git a/Applications/IRCClient/IRCAppWindow.h b/Applications/IRCClient/IRCAppWindow.h
deleted file mode 100644
index 10f0f5a4ee..0000000000
--- a/Applications/IRCClient/IRCAppWindow.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "IRCClient.h"
-#include "IRCWindow.h"
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-
-class IRCAppWindow : public GUI::Window {
-    C_OBJECT(IRCAppWindow);
-
-public:
-    virtual ~IRCAppWindow() override;
-
-    static IRCAppWindow& the();
-
-    void set_active_window(IRCWindow&);
-
-private:
-    IRCAppWindow(String server, int port);
-
-    void setup_client();
-    void setup_actions();
-    void setup_menus();
-    void setup_widgets();
-    void update_title();
-    void update_gui_actions();
-
-    NonnullRefPtr<IRCWindow> create_window(void* owner, IRCWindow::Type, const String& name);
-    NonnullRefPtr<IRCClient> m_client;
-    RefPtr<GUI::StackWidget> m_container;
-    RefPtr<GUI::TableView> m_window_list;
-    RefPtr<GUI::Action> m_join_action;
-    RefPtr<GUI::Action> m_list_channels_action;
-    RefPtr<GUI::Action> m_part_action;
-    RefPtr<GUI::Action> m_cycle_channel_action;
-    RefPtr<GUI::Action> m_whois_action;
-    RefPtr<GUI::Action> m_open_query_action;
-    RefPtr<GUI::Action> m_close_query_action;
-    RefPtr<GUI::Action> m_change_nick_action;
-    RefPtr<GUI::Action> m_change_topic_action;
-    RefPtr<GUI::Action> m_invite_user_action;
-    RefPtr<GUI::Action> m_banlist_action;
-    RefPtr<GUI::Action> m_voice_user_action;
-    RefPtr<GUI::Action> m_devoice_user_action;
-    RefPtr<GUI::Action> m_hop_user_action;
-    RefPtr<GUI::Action> m_dehop_user_action;
-    RefPtr<GUI::Action> m_op_user_action;
-    RefPtr<GUI::Action> m_deop_user_action;
-    RefPtr<GUI::Action> m_kick_user_action;
-};
diff --git a/Applications/IRCClient/IRCChannel.cpp b/Applications/IRCClient/IRCChannel.cpp
deleted file mode 100644
index 81d9173e31..0000000000
--- a/Applications/IRCClient/IRCChannel.cpp
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "IRCChannel.h"
-#include "IRCChannelMemberListModel.h"
-#include "IRCClient.h"
-#include <stdio.h>
-
-IRCChannel::IRCChannel(IRCClient& client, const String& name)
-    : m_client(client)
-    , m_name(name)
-    , m_log(IRCLogBuffer::create())
-    , m_member_model(IRCChannelMemberListModel::create(*this))
-{
-    m_window = m_client.aid_create_window(this, IRCWindow::Channel, m_name);
-    m_window->set_log_buffer(*m_log);
-}
-
-IRCChannel::~IRCChannel()
-{
-}
-
-NonnullRefPtr<IRCChannel> IRCChannel::create(IRCClient& client, const String& name)
-{
-    return adopt(*new IRCChannel(client, name));
-}
-
-void IRCChannel::add_member(const String& name, char prefix)
-{
-    for (auto& member : m_members) {
-        if (member.name == name) {
-            member.prefix = prefix;
-            return;
-        }
-    }
-    m_members.append({ name, prefix });
-    m_member_model->update();
-}
-
-void IRCChannel::remove_member(const String& name)
-{
-    m_members.remove_first_matching([&](auto& member) { return name == member.name; });
-}
-
-void IRCChannel::add_message(char prefix, const String& name, const String& text, Color color)
-{
-    log().add_message(prefix, name, text, color);
-    window().did_add_message(name, text);
-}
-
-void IRCChannel::add_message(const String& text, Color color)
-{
-    log().add_message(text, color);
-    window().did_add_message();
-}
-
-void IRCChannel::say(const String& text)
-{
-    m_client.send_privmsg(m_name, text);
-    add_message(' ', m_client.nickname(), text);
-}
-
-void IRCChannel::handle_join(const String& nick, const String& hostmask)
-{
-    if (nick == m_client.nickname()) {
-        m_open = true;
-        return;
-    }
-    add_member(nick, (char)0);
-    m_member_model->update();
-    if (m_client.show_join_part_messages())
-        add_message(String::formatted("*** {} [{}] has joined {}", nick, hostmask, m_name), Color::MidGreen);
-}
-
-void IRCChannel::handle_part(const String& nick, const String& hostmask)
-{
-    if (nick == m_client.nickname()) {
-        m_open = false;
-        m_members.clear();
-        m_client.did_part_from_channel({}, *this);
-    } else {
-        remove_member(nick);
-    }
-    m_member_model->update();
-    if (m_client.show_join_part_messages())
-        add_message(String::formatted("*** {} [{}] has parted from {}", nick, hostmask, m_name), Color::MidGreen);
-}
-
-void IRCChannel::handle_quit(const String& nick, const String& hostmask, const String& message)
-{
-    if (nick == m_client.nickname()) {
-        m_open = false;
-        m_members.clear();
-        m_client.did_part_from_channel({}, *this);
-    } else {
-        remove_member(nick);
-    }
-    m_member_model->update();
-    add_message(String::formatted("*** {} [{}] has quit ({})", nick, hostmask, message), Color::MidGreen);
-}
-
-void IRCChannel::handle_topic(const String& nick, const String& topic)
-{
-    if (nick.is_null())
-        add_message(String::formatted("*** Topic is \"{}\"", topic), Color::MidBlue);
-    else
-        add_message(String::formatted("*** {} set topic to \"{}\"", nick, topic), Color::MidBlue);
-}
-
-void IRCChannel::notify_nick_changed(const String& old_nick, const String& new_nick)
-{
-    for (auto& member : m_members) {
-        if (member.name == old_nick) {
-            member.name = new_nick;
-            m_member_model->update();
-            if (m_client.show_nick_change_messages())
-                add_message(String::formatted("~ {} changed nickname to {}", old_nick, new_nick), Color::MidMagenta);
-            return;
-        }
-    }
-}
diff --git a/Applications/IRCClient/IRCChannel.h b/Applications/IRCClient/IRCChannel.h
deleted file mode 100644
index 1d0eb8657b..0000000000
--- a/Applications/IRCClient/IRCChannel.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "IRCLogBuffer.h"
-#include <AK/RefCounted.h>
-#include <AK/RefPtr.h>
-#include <AK/String.h>
-#include <AK/Vector.h>
-
-class IRCClient;
-class IRCChannelMemberListModel;
-class IRCWindow;
-
-class IRCChannel : public RefCounted<IRCChannel> {
-public:
-    static NonnullRefPtr<IRCChannel> create(IRCClient&, const String&);
-    ~IRCChannel();
-
-    bool is_open() const { return m_open; }
-    void set_open(bool b) { m_open = b; }
-
-    String name() const { return m_name; }
-
-    void add_member(const String& name, char prefix);
-    void remove_member(const String& name);
-
-    void add_message(char prefix, const String& name, const String& text, Color = Color::Black);
-    void add_message(const String& text, Color = Color::Black);
-
-    void say(const String&);
-
-    const IRCLogBuffer& log() const { return *m_log; }
-    IRCLogBuffer& log() { return *m_log; }
-
-    IRCChannelMemberListModel* member_model() { return m_member_model.ptr(); }
-    const IRCChannelMemberListModel* member_model() const { return m_member_model.ptr(); }
-
-    int member_count() const { return m_members.size(); }
-    String member_at(int i) { return m_members[i].name; }
-
-    void handle_join(const String& nick, const String& hostmask);
-    void handle_part(const String& nick, const String& hostmask);
-    void handle_quit(const String& nick, const String& hostmask, const String& message);
-    void handle_topic(const String& nick, const String& topic);
-
-    IRCWindow& window() { return *m_window; }
-    const IRCWindow& window() const { return *m_window; }
-
-    String topic() const { return m_topic; }
-
-    void notify_nick_changed(const String& old_nick, const String& new_nick);
-
-private:
-    IRCChannel(IRCClient&, const String&);
-
-    IRCClient& m_client;
-    String m_name;
-    String m_topic;
-    struct Member {
-        String name;
-        char prefix { 0 };
-    };
-    Vector<Member> m_members;
-    bool m_open { false };
-
-    NonnullRefPtr<IRCLogBuffer> m_log;
-    NonnullRefPtr<IRCChannelMemberListModel> m_member_model;
-    IRCWindow* m_window { nullptr };
-};
diff --git a/Applications/IRCClient/IRCChannelMemberListModel.cpp b/Applications/IRCClient/IRCChannelMemberListModel.cpp
deleted file mode 100644
index 22cdcd710f..0000000000
--- a/Applications/IRCClient/IRCChannelMemberListModel.cpp
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "IRCChannelMemberListModel.h"
-#include "IRCChannel.h"
-#include <stdio.h>
-#include <time.h>
-
-IRCChannelMemberListModel::IRCChannelMemberListModel(IRCChannel& channel)
-    : m_channel(channel)
-{
-}
-
-IRCChannelMemberListModel::~IRCChannelMemberListModel()
-{
-}
-
-int IRCChannelMemberListModel::row_count(const GUI::ModelIndex&) const
-{
-    return m_channel.member_count();
-}
-
-int IRCChannelMemberListModel::column_count(const GUI::ModelIndex&) const
-{
-    return 1;
-}
-
-String IRCChannelMemberListModel::column_name(int column) const
-{
-    switch (column) {
-    case Column::Name:
-        return "Name";
-    }
-    ASSERT_NOT_REACHED();
-}
-
-GUI::Variant IRCChannelMemberListModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
-{
-    if (role == GUI::ModelRole::TextAlignment)
-        return Gfx::TextAlignment::CenterLeft;
-    if (role == GUI::ModelRole::Display) {
-        switch (index.column()) {
-        case Column::Name:
-            return m_channel.member_at(index.row());
-        }
-    }
-    return {};
-}
-
-void IRCChannelMemberListModel::update()
-{
-    did_update();
-}
-
-String IRCChannelMemberListModel::nick_at(const GUI::ModelIndex& index) const
-{
-    return data(index, GUI::ModelRole::Display).to_string();
-}
diff --git a/Applications/IRCClient/IRCChannelMemberListModel.h b/Applications/IRCClient/IRCChannelMemberListModel.h
deleted file mode 100644
index 99e4128fc6..0000000000
--- a/Applications/IRCClient/IRCChannelMemberListModel.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <LibGUI/Model.h>
-
-class IRCChannel;
-
-class IRCChannelMemberListModel final : public GUI::Model {
-public:
-    enum Column {
-        Name
-    };
-    static NonnullRefPtr<IRCChannelMemberListModel> create(IRCChannel& channel) { return adopt(*new IRCChannelMemberListModel(channel)); }
-    virtual ~IRCChannelMemberListModel() override;
-
-    virtual int row_count(const GUI::ModelIndex&) const override;
-    virtual int column_count(const GUI::ModelIndex&) const override;
-    virtual String column_name(int column) const override;
-    virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
-    virtual void update() override;
-    virtual String nick_at(const GUI::ModelIndex& index) const;
-
-private:
-    explicit IRCChannelMemberListModel(IRCChannel&);
-
-    IRCChannel& m_channel;
-};
diff --git a/Applications/IRCClient/IRCClient.cpp b/Applications/IRCClient/IRCClient.cpp
deleted file mode 100644
index c0da630b8f..0000000000
--- a/Applications/IRCClient/IRCClient.cpp
+++ /dev/null
@@ -1,1188 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "IRCClient.h"
-#include "IRCAppWindow.h"
-#include "IRCChannel.h"
-#include "IRCLogBuffer.h"
-#include "IRCQuery.h"
-#include "IRCWindow.h"
-#include "IRCWindowListModel.h"
-#include <AK/QuickSort.h>
-#include <AK/StringBuilder.h>
-#include <LibCore/DateTime.h>
-#include <LibCore/Notifier.h>
-#include <pwd.h>
-#include <stdio.h>
-#include <strings.h>
-
-#ifndef IRC_DEBUG
-#    define IRC_DEBUG
-#endif
-
-enum IRCNumeric {
-    RPL_WELCOME = 1,
-    RPL_WHOISUSER = 311,
-    RPL_WHOISSERVER = 312,
-    RPL_WHOISOPERATOR = 313,
-    RPL_ENDOFWHO = 315,
-    RPL_WHOISIDLE = 317,
-    RPL_ENDOFWHOIS = 318,
-    RPL_WHOISCHANNELS = 319,
-    RPL_TOPIC = 332,
-    RPL_TOPICWHOTIME = 333,
-    RPL_NAMREPLY = 353,
-    RPL_ENDOFNAMES = 366,
-    RPL_BANLIST = 367,
-    RPL_ENDOFBANLIST = 368,
-    RPL_ENDOFWHOWAS = 369,
-    RPL_ENDOFMOTD = 376,
-    ERR_NOSUCHNICK = 401,
-    ERR_UNKNOWNCOMMAND = 421,
-    ERR_NICKNAMEINUSE = 433,
-};
-
-IRCClient::IRCClient(String server, int port)
-    : m_nickname("seren1ty")
-    , m_client_window_list_model(IRCWindowListModel::create(*this))
-    , m_log(IRCLogBuffer::create())
-    , m_config(Core::ConfigFile::get_for_app("IRCClient"))
-{
-    struct passwd* user_pw = getpwuid(getuid());
-    m_socket = Core::TCPSocket::construct(this);
-    m_nickname = m_config->read_entry("User", "Nickname", String::formatted("{}_seren1ty", user_pw->pw_name));
-
-    if (server.is_empty()) {
-        m_hostname = m_config->read_entry("Connection", "Server", "");
-        m_port = m_config->read_num_entry("Connection", "Port", 6667);
-    } else {
-        m_hostname = server;
-        m_port = port ? port : 6667;
-    }
-
-    m_show_join_part_messages = m_config->read_bool_entry("Messaging", "ShowJoinPartMessages", 1);
-    m_show_nick_change_messages = m_config->read_bool_entry("Messaging", "ShowNickChangeMessages", 1);
-
-    m_notify_on_message = m_config->read_bool_entry("Notifications", "NotifyOnMessage", 1);
-    m_notify_on_mention = m_config->read_bool_entry("Notifications", "NotifyOnMention", 1);
-
-    m_ctcp_version_reply = m_config->read_entry("CTCP", "VersionReply", "IRC Client [x86] / Serenity OS");
-    m_ctcp_userinfo_reply = m_config->read_entry("CTCP", "UserInfoReply", user_pw->pw_name);
-    m_ctcp_finger_reply = m_config->read_entry("CTCP", "FingerReply", user_pw->pw_name);
-}
-
-IRCClient::~IRCClient()
-{
-}
-
-void IRCClient::set_server(const String& hostname, int port)
-{
-    m_hostname = hostname;
-    m_port = port;
-    m_config->write_entry("Connection", "Server", hostname);
-    m_config->write_num_entry("Connection", "Port", port);
-    m_config->sync();
-}
-
-void IRCClient::on_socket_connected()
-{
-    m_notifier = Core::Notifier::construct(m_socket->fd(), Core::Notifier::Read);
-    m_notifier->on_ready_to_read = [this] { receive_from_server(); };
-
-    send_user();
-    send_nick();
-}
-
-bool IRCClient::connect()
-{
-    if (m_socket->is_connected())
-        ASSERT_NOT_REACHED();
-
-    m_socket->on_connected = [this] { on_socket_connected(); };
-
-    return m_socket->connect(m_hostname, m_port);
-}
-
-void IRCClient::receive_from_server()
-{
-    while (m_socket->can_read_line()) {
-        auto line = m_socket->read_line();
-        if (line.is_null()) {
-            if (!m_socket->is_connected()) {
-                outln("IRCClient: Connection closed!");
-                exit(1);
-            }
-            ASSERT_NOT_REACHED();
-        }
-        process_line(line);
-    }
-}
-
-void IRCClient::process_line(const String& line)
-{
-    Message msg;
-    Vector<char, 32> prefix;
-    Vector<char, 32> command;
-    Vector<char, 256> current_parameter;
-    enum {
-        Start,
-        InPrefix,
-        InCommand,
-        InStartOfParameter,
-        InParameter,
-        InTrailingParameter,
-    } state
-        = Start;
-
-    for (size_t i = 0; i < line.length(); ++i) {
-        char ch = line[i];
-        if (ch == '\r')
-            continue;
-        if (ch == '\n')
-            break;
-        switch (state) {
-        case Start:
-            if (ch == ':') {
-                state = InPrefix;
-                continue;
-            }
-            state = InCommand;
-            [[fallthrough]];
-        case InCommand:
-            if (ch == ' ') {
-                state = InStartOfParameter;
-                continue;
-            }
-            command.append(ch);
-            continue;
-        case InPrefix:
-            if (ch == ' ') {
-                state = InCommand;
-                continue;
-            }
-            prefix.append(ch);
-            continue;
-        case InStartOfParameter:
-            if (ch == ':') {
-                state = InTrailingParameter;
-                continue;
-            }
-            state = InParameter;
-            [[fallthrough]];
-        case InParameter:
-            if (ch == ' ') {
-                if (!current_parameter.is_empty())
-                    msg.arguments.append(String(current_parameter.data(), current_parameter.size()));
-                current_parameter.clear_with_capacity();
-                state = InStartOfParameter;
-                continue;
-            }
-            current_parameter.append(ch);
-            continue;
-        case InTrailingParameter:
-            current_parameter.append(ch);
-            continue;
-        }
-    }
-    if (!current_parameter.is_empty())
-        msg.arguments.append(String::copy(current_parameter));
-    msg.prefix = String::copy(prefix);
-    msg.command = String::copy(command);
-    handle(msg);
-}
-
-void IRCClient::send(const String& text)
-{
-    if (!m_socket->send(text.bytes())) {
-        perror("send");
-        exit(1);
-    }
-}
-
-void IRCClient::send_user()
-{
-    send(String::formatted("USER {} 0 * :{}\r\n", m_nickname, m_nickname));
-}
-
-void IRCClient::send_nick()
-{
-    send(String::formatted("NICK {}\r\n", m_nickname));
-}
-
-void IRCClient::send_pong(const String& server)
-{
-    send(String::formatted("PONG {}\r\n", server));
-    sleep(1);
-}
-
-void IRCClient::join_channel(const String& channel_name)
-{
-    send(String::formatted("JOIN {}\r\n", channel_name));
-}
-
-void IRCClient::part_channel(const String& channel_name)
-{
-    send(String::formatted("PART {}\r\n", channel_name));
-}
-
-void IRCClient::send_whois(const String& nick)
-{
-    send(String::formatted("WHOIS {}\r\n", nick));
-}
-
-void IRCClient::handle(const Message& msg)
-{
-#ifdef IRC_DEBUG
-    outln("IRCClient::execute: prefix='{}', command='{}', arguments={}",
-        msg.prefix,
-        msg.command,
-        msg.arguments.size());
-
-    size_t index = 0;
-    for (auto& arg : msg.arguments)
-        outln("    [{}]: {}", index++, arg);
-#endif
-
-    auto numeric = msg.command.to_uint();
-
-    if (numeric.has_value()) {
-        switch (numeric.value()) {
-        case RPL_WELCOME:
-            return handle_rpl_welcome(msg);
-        case RPL_WHOISCHANNELS:
-            return handle_rpl_whoischannels(msg);
-        case RPL_ENDOFWHO:
-            return handle_rpl_endofwho(msg);
-        case RPL_ENDOFWHOIS:
-            return handle_rpl_endofwhois(msg);
-        case RPL_ENDOFWHOWAS:
-            return handle_rpl_endofwhowas(msg);
-        case RPL_ENDOFMOTD:
-            return handle_rpl_endofmotd(msg);
-        case RPL_WHOISOPERATOR:
-            return handle_rpl_whoisoperator(msg);
-        case RPL_WHOISSERVER:
-            return handle_rpl_whoisserver(msg);
-        case RPL_WHOISUSER:
-            return handle_rpl_whoisuser(msg);
-        case RPL_WHOISIDLE:
-            return handle_rpl_whoisidle(msg);
-        case RPL_TOPICWHOTIME:
-            return handle_rpl_topicwhotime(msg);
-        case RPL_TOPIC:
-            return handle_rpl_topic(msg);
-        case RPL_NAMREPLY:
-            return handle_rpl_namreply(msg);
-        case RPL_ENDOFNAMES:
-            return handle_rpl_endofnames(msg);
-        case RPL_BANLIST:
-            return handle_rpl_banlist(msg);
-        case RPL_ENDOFBANLIST:
-            return handle_rpl_endofbanlist(msg);
-        case ERR_NOSUCHNICK:
-            return handle_err_nosuchnick(msg);
-        case ERR_UNKNOWNCOMMAND:
-            return handle_err_unknowncommand(msg);
-        case ERR_NICKNAMEINUSE:
-            return handle_err_nicknameinuse(msg);
-        }
-    }
-
-    if (msg.command == "PING")
-        return handle_ping(msg);
-
-    if (msg.command == "JOIN")
-        return handle_join(msg);
-
-    if (msg.command == "PART")
-        return handle_part(msg);
-
-    if (msg.command == "QUIT")
-        return handle_quit(msg);
-
-    if (msg.command == "TOPIC")
-        return handle_topic(msg);
-
-    if (msg.command == "PRIVMSG")
-        return handle_privmsg_or_notice(msg, PrivmsgOrNotice::Privmsg);
-
-    if (msg.command == "NOTICE")
-        return handle_privmsg_or_notice(msg, PrivmsgOrNotice::Notice);
-
-    if (msg.command == "NICK")
-        return handle_nick(msg);
-
-    if (msg.arguments.size() >= 2)
-        add_server_message(String::formatted("[{}] {}", msg.command, msg.arguments[1]));
-}
-
-void IRCClient::add_server_message(const String& text, Color color)
-{
-    m_log->add_message(0, "", text, color);
-    m_server_subwindow->did_add_message();
-}
-
-void IRCClient::send_topic(const String& channel_name, const String& text)
-{
-    send(String::formatted("TOPIC {} :{}\r\n", channel_name, text));
-}
-
-void IRCClient::send_invite(const String& channel_name, const String& nick)
-{
-    send(String::formatted("INVITE {} {}\r\n", nick, channel_name));
-}
-
-void IRCClient::send_banlist(const String& channel_name)
-{
-    send(String::formatted("MODE {} +b\r\n", channel_name));
-}
-
-void IRCClient::send_voice_user(const String& channel_name, const String& nick)
-{
-    send(String::formatted("MODE {} +v {}\r\n", channel_name, nick));
-}
-
-void IRCClient::send_devoice_user(const String& channel_name, const String& nick)
-{
-    send(String::formatted("MODE {} -v {}\r\n", channel_name, nick));
-}
-
-void IRCClient::send_hop_user(const String& channel_name, const String& nick)
-{
-    send(String::formatted("MODE {} +h {}\r\n", channel_name, nick));
-}
-
-void IRCClient::send_dehop_user(const String& channel_name, const String& nick)
-{
-    send(String::formatted("MODE {} -h {}\r\n", channel_name, nick));
-}
-
-void IRCClient::send_op_user(const String& channel_name, const String& nick)
-{
-    send(String::formatted("MODE {} +o {}\r\n", channel_name, nick));
-}
-
-void IRCClient::send_deop_user(const String& channel_name, const String& nick)
-{
-    send(String::formatted("MODE {} -o {}\r\n", channel_name, nick));
-}
-
-void IRCClient::send_kick(const String& channel_name, const String& nick, const String& comment)
-{
-    send(String::formatted("KICK {} {} :{}\r\n", channel_name, nick, comment));
-}
-
-void IRCClient::send_list()
-{
-    send("LIST\r\n");
-}
-
-void IRCClient::send_privmsg(const String& target, const String& text)
-{
-    send(String::formatted("PRIVMSG {} :{}\r\n", target, text));
-}
-
-void IRCClient::send_notice(const String& target, const String& text)
-{
-    send(String::formatted("NOTICE {} :{}\r\n", target, text));
-}
-
-void IRCClient::handle_user_input_in_channel(const String& channel_name, const String& input)
-{
-    if (input.is_empty())
-        return;
-    if (input[0] == '/')
-        return handle_user_command(input);
-    ensure_channel(channel_name).say(input);
-}
-
-void IRCClient::handle_user_input_in_query(const String& query_name, const String& input)
-{
-    if (input.is_empty())
-        return;
-    if (input[0] == '/')
-        return handle_user_command(input);
-    ensure_query(query_name).say(input);
-}
-
-void IRCClient::handle_user_input_in_server(const String& input)
-{
-    if (input.is_empty())
-        return;
-    if (input[0] == '/')
-        return handle_user_command(input);
-}
-
-String IRCClient::nick_without_prefix(const String& nick)
-{
-    assert(!nick.is_empty());
-    if (IRCClient::is_nick_prefix(nick[0]))
-        return nick.substring(1, nick.length() - 1);
-    return nick;
-}
-
-bool IRCClient::is_nick_prefix(char ch)
-{
-    switch (ch) {
-    case '@':
-    case '+':
-    case '~':
-    case '&':
-    case '%':
-        return true;
-    }
-    return false;
-}
-
-bool IRCClient::is_channel_prefix(char ch)
-{
-    switch (ch) {
-    case '&':
-    case '#':
-    case '+':
-    case '!':
-        return true;
-    }
-    return false;
-}
-
-static bool has_ctcp_payload(const StringView& string)
-{
-    return string.length() >= 2 && string[0] == 0x01 && string[string.length() - 1] == 0x01;
-}
-
-void IRCClient::handle_privmsg_or_notice(const Message& msg, PrivmsgOrNotice type)
-{
-    if (msg.arguments.size() < 2)
-        return;
-    if (msg.prefix.is_empty())
-        return;
-    auto parts = msg.prefix.split('!');
-    auto sender_nick = parts[0];
-    auto target = msg.arguments[0];
-
-    bool is_ctcp = has_ctcp_payload(msg.arguments[1]);
-
-#ifdef IRC_DEBUG
-    outln("handle_privmsg_or_notice: type='{}'{}, sender_nick='{}', target='{}'",
-        type == PrivmsgOrNotice::Privmsg ? "privmsg" : "notice",
-        is_ctcp ? " (ctcp)" : "",
-        sender_nick,
-        target);
-#endif
-
-    if (sender_nick.is_empty())
-        return;
-
-    char sender_prefix = 0;
-    if (is_nick_prefix(sender_nick[0])) {
-        sender_prefix = sender_nick[0];
-        sender_nick = sender_nick.substring(1, sender_nick.length() - 1);
-    }
-
-    String message_text = msg.arguments[1];
-    auto message_color = Color::Black;
-
-    bool insert_as_raw_message = false;
-
-    if (is_ctcp) {
-        auto ctcp_payload = msg.arguments[1].substring_view(1, msg.arguments[1].length() - 2);
-        if (type == PrivmsgOrNotice::Privmsg)
-            handle_ctcp_request(sender_nick, ctcp_payload);
-        else
-            handle_ctcp_response(sender_nick, ctcp_payload);
-
-        if (ctcp_payload.starts_with("ACTION")) {
-            insert_as_raw_message = true;
-            message_text = String::formatted("* {}{}", sender_nick, ctcp_payload.substring_view(6, ctcp_payload.length() - 6));
-            message_color = Color::Magenta;
-        } else {
-            message_text = String::formatted("(CTCP) {}", ctcp_payload);
-            message_color = Color::Blue;
-        }
-    }
-
-    {
-        auto it = m_channels.find(target);
-        if (it != m_channels.end()) {
-            if (insert_as_raw_message)
-                (*it).value->add_message(message_text, message_color);
-            else
-                (*it).value->add_message(sender_prefix, sender_nick, message_text, message_color);
-            return;
-        }
-    }
-
-    // For NOTICE or CTCP messages, only put them in query if one already exists.
-    // Otherwise, put them in the server window. This seems to match other clients.
-    IRCQuery* query = nullptr;
-    if (is_ctcp || type == PrivmsgOrNotice::Notice) {
-        query = query_with_name(sender_nick);
-    } else {
-        query = &ensure_query(sender_nick);
-    }
-    if (query) {
-        if (insert_as_raw_message)
-            query->add_message(message_text, message_color);
-        else
-            query->add_message(sender_prefix, sender_nick, message_text, message_color);
-    } else {
-        add_server_message(String::formatted("<{}> {}", sender_nick, message_text), message_color);
-    }
-}
-
-IRCQuery* IRCClient::query_with_name(const String& name)
-{
-    return const_cast<IRCQuery*>(m_queries.get(name).value_or(nullptr));
-}
-
-IRCQuery& IRCClient::ensure_query(const String& name)
-{
-    auto it = m_queries.find(name);
-    if (it != m_queries.end())
-        return *(*it).value;
-    auto query = IRCQuery::create(*this, name);
-    auto& query_reference = *query;
-    m_queries.set(name, query);
-    return query_reference;
-}
-
-IRCChannel& IRCClient::ensure_channel(const String& name)
-{
-    auto it = m_channels.find(name);
-    if (it != m_channels.end())
-        return *(*it).value;
-    auto channel = IRCChannel::create(*this, name);
-    auto& channel_reference = *channel;
-    m_channels.set(name, channel);
-    return channel_reference;
-}
-
-void IRCClient::handle_ping(const Message& msg)
-{
-    if (msg.arguments.size() < 1)
-        return;
-    m_log->add_message(0, "", "Ping? Pong!");
-    send_pong(msg.arguments[0]);
-}
-
-void IRCClient::handle_join(const Message& msg)
-{
-    if (msg.arguments.size() != 1)
-        return;
-    auto prefix_parts = msg.prefix.split('!');
-    if (prefix_parts.size() < 1)
-        return;
-    auto nick = prefix_parts[0];
-    auto& channel_name = msg.arguments[0];
-    ensure_channel(channel_name).handle_join(nick, msg.prefix);
-}
-
-void IRCClient::handle_part(const Message& msg)
-{
-    if (msg.arguments.size() < 1)
-        return;
-    auto prefix_parts = msg.prefix.split('!');
-    if (prefix_parts.size() < 1)
-        return;
-    auto nick = prefix_parts[0];
-    auto& channel_name = msg.arguments[0];
-    ensure_channel(channel_name).handle_part(nick, msg.prefix);
-}
-
-void IRCClient::handle_quit(const Message& msg)
-{
-    if (msg.arguments.size() < 1)
-        return;
-    auto prefix_parts = msg.prefix.split('!');
-    if (prefix_parts.size() < 1)
-        return;
-    auto nick = prefix_parts[0];
-    auto& message = msg.arguments[0];
-    for (auto& it : m_channels) {
-        it.value->handle_quit(nick, msg.prefix, message);
-    }
-}
-
-void IRCClient::handle_nick(const Message& msg)
-{
-    auto prefix_parts = msg.prefix.split('!');
-    if (prefix_parts.size() < 1)
-        return;
-    auto old_nick = prefix_parts[0];
-    if (msg.arguments.size() != 1)
-        return;
-    auto& new_nick = msg.arguments[0];
-    if (old_nick == m_nickname)
-        m_nickname = new_nick;
-    if (m_show_nick_change_messages)
-        add_server_message(String::formatted("~ {} changed nickname to {}", old_nick, new_nick));
-    if (on_nickname_changed)
-        on_nickname_changed(new_nick);
-    for (auto& it : m_channels) {
-        it.value->notify_nick_changed(old_nick, new_nick);
-    }
-}
-
-void IRCClient::handle_topic(const Message& msg)
-{
-    if (msg.arguments.size() != 2)
-        return;
-    auto prefix_parts = msg.prefix.split('!');
-    if (prefix_parts.size() < 1)
-        return;
-    auto nick = prefix_parts[0];
-    auto& channel_name = msg.arguments[0];
-    ensure_channel(channel_name).handle_topic(nick, msg.arguments[1]);
-}
-
-void IRCClient::handle_rpl_welcome(const Message& msg)
-{
-    if (msg.arguments.size() < 2)
-        return;
-    auto& welcome_message = msg.arguments[1];
-    add_server_message(welcome_message);
-
-    auto channel_str = m_config->read_entry("Connection", "AutoJoinChannels", "");
-    if (channel_str.is_empty())
-        return;
-    dbgln("IRCClient: Channels to autojoin: {}", channel_str);
-    auto channels = channel_str.split(',');
-    for (auto& channel : channels) {
-        join_channel(channel);
-        dbgln("IRCClient: Auto joining channel: {}", channel);
-    }
-}
-
-void IRCClient::handle_rpl_topic(const Message& msg)
-{
-    if (msg.arguments.size() < 3)
-        return;
-    auto& channel_name = msg.arguments[1];
-    auto& topic = msg.arguments[2];
-    ensure_channel(channel_name).handle_topic({}, topic);
-}
-
-void IRCClient::handle_rpl_namreply(const Message& msg)
-{
-    if (msg.arguments.size() < 4)
-        return;
-    auto& channel_name = msg.arguments[2];
-    auto& channel = ensure_channel(channel_name);
-    auto members = msg.arguments[3].split(' ');
-
-    quick_sort(members, [](auto& a, auto& b) {
-        return strcasecmp(a.characters(), b.characters()) < 0;
-    });
-
-    for (auto& member : members) {
-        if (member.is_empty())
-            continue;
-        char prefix = 0;
-        if (is_nick_prefix(member[0]))
-            prefix = member[0];
-        channel.add_member(member, prefix);
-    }
-}
-
-void IRCClient::handle_rpl_endofnames(const Message&)
-{
-    add_server_message("// End of NAMES");
-}
-
-void IRCClient::handle_rpl_banlist(const Message& msg)
-{
-    if (msg.arguments.size() < 5)
-        return;
-    auto& channel = msg.arguments[1];
-    auto& mask = msg.arguments[2];
-    auto& user = msg.arguments[3];
-    auto& datestamp = msg.arguments[4];
-    add_server_message(String::formatted("* {}: {} on {} by {}", channel, mask, datestamp, user));
-}
-
-void IRCClient::handle_rpl_endofbanlist(const Message&)
-{
-    add_server_message("// End of BANLIST");
-}
-
-void IRCClient::handle_rpl_endofwho(const Message&)
-{
-    add_server_message("// End of WHO");
-}
-
-void IRCClient::handle_rpl_endofwhois(const Message&)
-{
-    add_server_message("// End of WHOIS");
-}
-
-void IRCClient::handle_rpl_endofwhowas(const Message&)
-{
-    add_server_message("// End of WHOWAS");
-}
-
-void IRCClient::handle_rpl_endofmotd(const Message&)
-{
-    add_server_message("// End of MOTD");
-}
-
-void IRCClient::handle_rpl_whoisoperator(const Message& msg)
-{
-    if (msg.arguments.size() < 2)
-        return;
-    auto& nick = msg.arguments[1];
-    add_server_message(String::formatted("* {} is an IRC operator", nick));
-}
-
-void IRCClient::handle_rpl_whoisserver(const Message& msg)
-{
-    if (msg.arguments.size() < 3)
-        return;
-    auto& nick = msg.arguments[1];
-    auto& server = msg.arguments[2];
-    add_server_message(String::formatted("* {} is using server {}", nick, server));
-}
-
-void IRCClient::handle_rpl_whoisuser(const Message& msg)
-{
-    if (msg.arguments.size() < 6)
-        return;
-    auto& nick = msg.arguments[1];
-    auto& username = msg.arguments[2];
-    auto& host = msg.arguments[3];
-    [[maybe_unused]] auto& asterisk = msg.arguments[4];
-    auto& realname = msg.arguments[5];
-    add_server_message(String::formatted("* {} is {}@{}, real name: {}", nick, username, host, realname));
-}
-
-void IRCClient::handle_rpl_whoisidle(const Message& msg)
-{
-    if (msg.arguments.size() < 3)
-        return;
-    auto& nick = msg.arguments[1];
-    auto& secs = msg.arguments[2];
-    add_server_message(String::formatted("* {} is {} seconds idle", nick, secs));
-}
-
-void IRCClient::handle_rpl_whoischannels(const Message& msg)
-{
-    if (msg.arguments.size() < 3)
-        return;
-    auto& nick = msg.arguments[1];
-    auto& channel_list = msg.arguments[2];
-    add_server_message(String::formatted("* {} is in channels {}", nick, channel_list));
-}
-
-void IRCClient::handle_rpl_topicwhotime(const Message& msg)
-{
-    if (msg.arguments.size() < 4)
-        return;
-    auto& channel_name = msg.arguments[1];
-    auto& nick = msg.arguments[2];
-    auto setat = msg.arguments[3];
-    auto setat_time = setat.to_uint();
-    if (setat_time.has_value())
-        setat = Core::DateTime::from_timestamp(setat_time.value()).to_string();
-    ensure_channel(channel_name).add_message(String::formatted("*** (set by {} at {})", nick, setat), Color::Blue);
-}
-
-void IRCClient::handle_err_nosuchnick(const Message& msg)
-{
-    if (msg.arguments.size() < 3)
-        return;
-    auto& nick = msg.arguments[1];
-    auto& message = msg.arguments[2];
-    add_server_message(String::formatted("* {} :{}", nick, message));
-}
-
-void IRCClient::handle_err_unknowncommand(const Message& msg)
-{
-    if (msg.arguments.size() < 2)
-        return;
-    auto& cmd = msg.arguments[1];
-    add_server_message(String::formatted("* Unknown command: {}", cmd));
-}
-
-void IRCClient::handle_err_nicknameinuse(const Message& msg)
-{
-    if (msg.arguments.size() < 2)
-        return;
-    auto& nick = msg.arguments[1];
-    add_server_message(String::formatted("* {} :Nickname in use", nick));
-}
-
-void IRCClient::register_subwindow(IRCWindow& subwindow)
-{
-    if (subwindow.type() == IRCWindow::Server) {
-        m_server_subwindow = &subwindow;
-        subwindow.set_log_buffer(*m_log);
-    }
-    m_windows.append(&subwindow);
-    m_client_window_list_model->update();
-}
-
-void IRCClient::unregister_subwindow(IRCWindow& subwindow)
-{
-    if (subwindow.type() == IRCWindow::Server) {
-        m_server_subwindow = &subwindow;
-    }
-    for (size_t i = 0; i < m_windows.size(); ++i) {
-        if (m_windows.at(i) == &subwindow) {
-            m_windows.remove(i);
-            break;
-        }
-    }
-    m_client_window_list_model->update();
-}
-
-void IRCClient::handle_user_command(const String& input)
-{
-    auto parts = input.split_view(' ');
-    if (parts.is_empty())
-        return;
-    auto command = String(parts[0]).to_uppercase();
-    if (command == "/RAW") {
-        if (parts.size() <= 1)
-            return;
-        int command_length = command.length() + 1;
-        StringView raw_message = input.view().substring_view(command_length, input.view().length() - command_length);
-        send(String::formatted("{}\r\n", raw_message));
-        return;
-    }
-    if (command == "/NICK") {
-        if (parts.size() >= 2)
-            change_nick(parts[1]);
-        return;
-    }
-    if (command == "/JOIN") {
-        if (parts.size() >= 2)
-            join_channel(parts[1]);
-        return;
-    }
-    if (command == "/PART") {
-        if (parts.size() >= 2) {
-            auto channel = parts[1];
-            part_channel(channel);
-        } else {
-            auto* window = current_window();
-            if (!window || window->type() != IRCWindow::Type::Channel)
-                return;
-            auto channel = window->channel().name();
-            join_channel(channel);
-        }
-        return;
-    }
-    if (command == "/CYCLE") {
-        if (parts.size() >= 2) {
-            auto channel = parts[1];
-            part_channel(channel);
-            join_channel(channel);
-        } else {
-            auto* window = current_window();
-            if (!window || window->type() != IRCWindow::Type::Channel)
-                return;
-            auto channel = window->channel().name();
-            part_channel(channel);
-            join_channel(channel);
-        }
-        return;
-    }
-    if (command == "/BANLIST") {
-        if (parts.size() >= 2) {
-            auto channel = parts[1];
-            send_banlist(channel);
-        } else {
-            auto* window = current_window();
-            if (!window || window->type() != IRCWindow::Type::Channel)
-                return;
-            auto channel = window->channel().name();
-            send_banlist(channel);
-        }
-        return;
-    }
-    if (command == "/ME") {
-        if (parts.size() < 2)
-            return;
-
-        auto* window = current_window();
-        if (!window)
-            return;
-
-        auto emote = input.view().substring_view_starting_after_substring(parts[0]);
-        auto action_string = String::formatted("ACTION{}", emote);
-        String peer;
-        if (window->type() == IRCWindow::Type::Channel) {
-            peer = window->channel().name();
-            window->channel().add_message(String::formatted("* {}{}", m_nickname, emote), Gfx::Color::Magenta);
-        } else if (window->type() == IRCWindow::Type::Query) {
-            peer = window->query().name();
-            window->query().add_message(String::formatted("* {}{}", m_nickname, emote), Gfx::Color::Magenta);
-        } else {
-            return;
-        }
-
-        send_ctcp_request(peer, action_string);
-        return;
-    }
-    if (command == "/TOPIC") {
-        if (parts.size() < 2)
-            return;
-        if (parts[1].is_empty())
-            return;
-
-        if (is_channel_prefix(parts[1][0])) {
-            if (parts.size() < 3)
-                return;
-            auto channel = parts[1];
-            auto topic = input.view().substring_view_starting_after_substring(channel);
-            send_topic(channel, topic);
-        } else {
-            auto* window = current_window();
-            if (!window || window->type() != IRCWindow::Type::Channel)
-                return;
-            auto channel = window->channel().name();
-            auto topic = input.view().substring_view_starting_after_substring(parts[0]);
-            send_topic(channel, topic);
-        }
-        return;
-    }
-    if (command == "/KICK") {
-        if (parts.size() < 2)
-            return;
-        if (parts[1].is_empty())
-            return;
-
-        if (is_channel_prefix(parts[1][0])) {
-            if (parts.size() < 3)
-                return;
-            auto channel = parts[1];
-            auto nick = parts[2];
-            auto reason = input.view().substring_view_starting_after_substring(nick);
-            send_kick(channel, nick, reason);
-        } else {
-            auto* window = current_window();
-            if (!window || window->type() != IRCWindow::Type::Channel)
-                return;
-            auto channel = window->channel().name();
-            auto nick = parts[1];
-            auto reason = input.view().substring_view_starting_after_substring(nick);
-            send_kick(channel, nick, reason);
-        }
-        return;
-    }
-    if (command == "/LIST") {
-        send_list();
-        return;
-    }
-    if (command == "/QUERY") {
-        if (parts.size() >= 2) {
-            auto& query = ensure_query(parts[1]);
-            IRCAppWindow::the().set_active_window(query.window());
-        }
-        return;
-    }
-    if (command == "/MSG") {
-        if (parts.size() < 3)
-            return;
-        auto nick = parts[1];
-        auto& query = ensure_query(nick);
-        IRCAppWindow::the().set_active_window(query.window());
-        query.say(input.view().substring_view_starting_after_substring(nick));
-        return;
-    }
-    if (command == "/WHOIS") {
-        if (parts.size() >= 2)
-            send_whois(parts[1]);
-        return;
-    }
-}
-
-void IRCClient::change_nick(const String& nick)
-{
-    send(String::formatted("NICK {}\r\n", nick));
-}
-
-void IRCClient::handle_list_channels_action()
-{
-    send_list();
-}
-
-void IRCClient::handle_whois_action(const String& nick)
-{
-    send_whois(nick);
-}
-
-void IRCClient::handle_ctcp_user_action(const String& nick, const String& message)
-{
-    send_ctcp_request(nick, message);
-}
-
-void IRCClient::handle_open_query_action(const String& nick)
-{
-    ensure_query(nick);
-}
-
-void IRCClient::handle_change_nick_action(const String& nick)
-{
-    change_nick(nick);
-}
-
-void IRCClient::handle_change_topic_action(const String& channel, const String& topic)
-{
-    send_topic(channel, topic);
-}
-
-void IRCClient::handle_invite_user_action(const String& channel, const String& nick)
-{
-    send_invite(channel, nick);
-}
-
-void IRCClient::handle_banlist_action(const String& channel)
-{
-    send_banlist(channel);
-}
-
-void IRCClient::handle_voice_user_action(const String& channel, const String& nick)
-{
-    send_voice_user(channel, nick);
-}
-
-void IRCClient::handle_devoice_user_action(const String& channel, const String& nick)
-{
-    send_devoice_user(channel, nick);
-}
-
-void IRCClient::handle_hop_user_action(const String& channel, const String& nick)
-{
-    send_hop_user(channel, nick);
-}
-
-void IRCClient::handle_dehop_user_action(const String& channel, const String& nick)
-{
-    send_dehop_user(channel, nick);
-}
-
-void IRCClient::handle_op_user_action(const String& channel, const String& nick)
-{
-    send_op_user(channel, nick);
-}
-
-void IRCClient::handle_deop_user_action(const String& channel, const String& nick)
-{
-    send_deop_user(channel, nick);
-}
-
-void IRCClient::handle_kick_user_action(const String& channel, const String& nick, const String& message)
-{
-    send_kick(channel, nick, message);
-}
-
-void IRCClient::handle_close_query_action(const String& nick)
-{
-    m_queries.remove(nick);
-    m_client_window_list_model->update();
-}
-
-void IRCClient::handle_join_action(const String& channel)
-{
-    join_channel(channel);
-}
-
-void IRCClient::handle_part_action(const String& channel)
-{
-    part_channel(channel);
-}
-
-void IRCClient::handle_cycle_channel_action(const String& channel)
-{
-    part_channel(channel);
-    join_channel(channel);
-}
-
-void IRCClient::did_part_from_channel(Badge<IRCChannel>, IRCChannel& channel)
-{
-    if (on_part_from_channel)
-        on_part_from_channel(channel);
-}
-
-void IRCClient::send_ctcp_response(const StringView& peer, const StringView& payload)
-{
-    StringBuilder builder;
-    builder.append(0x01);
-    builder.append(payload);
-    builder.append(0x01);
-    auto message = builder.to_string();
-    send_notice(peer, message);
-}
-
-void IRCClient::send_ctcp_request(const StringView& peer, const StringView& payload)
-{
-    StringBuilder builder;
-    builder.append(0x01);
-    builder.append(payload);
-    builder.append(0x01);
-    auto message = builder.to_string();
-    send_privmsg(peer, message);
-}
-
-void IRCClient::handle_ctcp_request(const StringView& peer, const StringView& payload)
-{
-    dbgln("handle_ctcp_request: {}", payload);
-
-    if (payload == "VERSION") {
-        auto version = ctcp_version_reply();
-        if (version.is_empty())
-            return;
-        send_ctcp_response(peer, String::formatted("VERSION {}", version));
-        return;
-    }
-
-    if (payload == "USERINFO") {
-        auto userinfo = ctcp_userinfo_reply();
-        if (userinfo.is_empty())
-            return;
-        send_ctcp_response(peer, String::formatted("USERINFO {}", userinfo));
-        return;
-    }
-
-    if (payload == "FINGER") {
-        auto finger = ctcp_finger_reply();
-        if (finger.is_empty())
-            return;
-        send_ctcp_response(peer, String::formatted("FINGER {}", finger));
-        return;
-    }
-
-    if (payload.starts_with("PING")) {
-        send_ctcp_response(peer, payload);
-        return;
-    }
-}
-
-void IRCClient::handle_ctcp_response(const StringView& peer, const StringView& payload)
-{
-    dbgln("handle_ctcp_response({}): {}", peer, payload);
-}
diff --git a/Applications/IRCClient/IRCClient.h b/Applications/IRCClient/IRCClient.h
deleted file mode 100644
index 06f7e59289..0000000000
--- a/Applications/IRCClient/IRCClient.h
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "IRCLogBuffer.h"
-#include "IRCWindow.h"
-#include <AK/CircularQueue.h>
-#include <AK/Function.h>
-#include <AK/HashMap.h>
-#include <AK/String.h>
-#include <LibCore/ConfigFile.h>
-#include <LibCore/TCPSocket.h>
-
-class IRCChannel;
-class IRCQuery;
-class IRCWindowListModel;
-
-class IRCClient final : public Core::Object {
-    C_OBJECT(IRCClient)
-    friend class IRCChannel;
-    friend class IRCQuery;
-
-public:
-    virtual ~IRCClient() override;
-
-    void set_server(const String& hostname, int port = 6667);
-
-    bool connect();
-
-    String hostname() const { return m_hostname; }
-    int port() const { return m_port; }
-
-    String nickname() const { return m_nickname; }
-
-    String ctcp_version_reply() const { return m_ctcp_version_reply; }
-    String ctcp_userinfo_reply() const { return m_ctcp_userinfo_reply; }
-    String ctcp_finger_reply() const { return m_ctcp_finger_reply; }
-
-    bool show_join_part_messages() const { return m_show_join_part_messages; }
-    bool show_nick_change_messages() const { return m_show_nick_change_messages; }
-
-    bool notify_on_message() const { return m_notify_on_message; }
-    bool notify_on_mention() const { return m_notify_on_mention; }
-
-    void join_channel(const String&);
-    void part_channel(const String&);
-    void change_nick(const String&);
-
-    static bool is_nick_prefix(char);
-    static bool is_channel_prefix(char);
-    String nick_without_prefix(const String& nick);
-
-    IRCWindow* current_window() { return aid_get_active_window(); }
-    const IRCWindow* current_window() const { return aid_get_active_window(); }
-
-    Function<void()> on_disconnect;
-    Function<void()> on_server_message;
-    Function<void(const String&)> on_nickname_changed;
-    Function<void(IRCChannel&)> on_part_from_channel;
-
-    Function<NonnullRefPtr<IRCWindow>(void*, IRCWindow::Type, const String&)> aid_create_window;
-    Function<IRCWindow*()> aid_get_active_window;
-    Function<void()> aid_update_window_list;
-
-    void register_subwindow(IRCWindow&);
-    void unregister_subwindow(IRCWindow&);
-
-    IRCWindowListModel* client_window_list_model() { return m_client_window_list_model.ptr(); }
-    const IRCWindowListModel* client_window_list_model() const { return m_client_window_list_model.ptr(); }
-
-    int window_count() const { return m_windows.size(); }
-    const IRCWindow& window_at(int index) const { return *m_windows.at(index); }
-    IRCWindow& window_at(int index) { return *m_windows.at(index); }
-
-    size_t window_index(const IRCWindow& window) const
-    {
-        for (size_t i = 0; i < m_windows.size(); ++i) {
-            if (m_windows[i] == &window)
-                return i;
-        }
-        ASSERT_NOT_REACHED();
-    }
-
-    void did_part_from_channel(Badge<IRCChannel>, IRCChannel&);
-
-    void handle_user_input_in_channel(const String& channel_name, const String&);
-    void handle_user_input_in_query(const String& query_name, const String&);
-    void handle_user_input_in_server(const String&);
-
-    void handle_list_channels_action();
-    void handle_whois_action(const String& nick);
-    void handle_ctcp_user_action(const String& nick, const String& message);
-    void handle_open_query_action(const String&);
-    void handle_close_query_action(const String&);
-    void handle_join_action(const String& channel_name);
-    void handle_part_action(const String& channel_name);
-    void handle_cycle_channel_action(const String& channel_name);
-    void handle_change_nick_action(const String& nick);
-    void handle_change_topic_action(const String& channel_name, const String&);
-    void handle_invite_user_action(const String& channel_name, const String& nick);
-    void handle_banlist_action(const String& channel_name);
-    void handle_voice_user_action(const String& channel_name, const String& nick);
-    void handle_devoice_user_action(const String& channel_name, const String& nick);
-    void handle_hop_user_action(const String& channel_name, const String& nick);
-    void handle_dehop_user_action(const String& channel_name, const String& nick);
-    void handle_op_user_action(const String& channel_name, const String& nick);
-    void handle_deop_user_action(const String& channel_name, const String& nick);
-    void handle_kick_user_action(const String& channel_name, const String& nick, const String&);
-
-    IRCQuery* query_with_name(const String&);
-    IRCQuery& ensure_query(const String& name);
-    IRCChannel& ensure_channel(const String& name);
-
-    void add_server_message(const String&, Color = Color::Black);
-
-private:
-    IRCClient(String server, int port);
-
-    struct Message {
-        String prefix;
-        String command;
-        Vector<String> arguments;
-    };
-
-    enum class PrivmsgOrNotice {
-        Privmsg,
-        Notice,
-    };
-
-    void receive_from_server();
-    void send(const String&);
-    void send_user();
-    void send_nick();
-    void send_pong(const String& server);
-    void send_privmsg(const String& target, const String&);
-    void send_notice(const String& target, const String&);
-    void send_topic(const String& channel_name, const String&);
-    void send_invite(const String& channel_name, const String& nick);
-    void send_banlist(const String& channel_name);
-    void send_voice_user(const String& channel_name, const String& nick);
-    void send_devoice_user(const String& channel_name, const String& nick);
-    void send_hop_user(const String& channel_name, const String& nick);
-    void send_dehop_user(const String& channel_name, const String& nick);
-    void send_op_user(const String& channel_name, const String& nick);
-    void send_deop_user(const String& channel_name, const String& nick);
-    void send_kick(const String& channel_name, const String& nick, const String&);
-    void send_list();
-    void send_whois(const String&);
-    void process_line(const String&);
-    void handle_join(const Message&);
-    void handle_part(const Message&);
-    void handle_quit(const Message&);
-    void handle_ping(const Message&);
-    void handle_topic(const Message&);
-    void handle_rpl_welcome(const Message&);
-    void handle_rpl_topic(const Message&);
-    void handle_rpl_whoisuser(const Message&);
-    void handle_rpl_whoisserver(const Message&);
-    void handle_rpl_whoisoperator(const Message&);
-    void handle_rpl_whoisidle(const Message&);
-    void handle_rpl_endofwho(const Message&);
-    void handle_rpl_endofwhois(const Message&);
-    void handle_rpl_endofwhowas(const Message&);
-    void handle_rpl_endofmotd(const Message&);
-    void handle_rpl_whoischannels(const Message&);
-    void handle_rpl_topicwhotime(const Message&);
-    void handle_rpl_endofnames(const Message&);
-    void handle_rpl_endofbanlist(const Message&);
-    void handle_rpl_namreply(const Message&);
-    void handle_rpl_banlist(const Message&);
-    void handle_err_nosuchnick(const Message&);
-    void handle_err_unknowncommand(const Message&);
-    void handle_err_nicknameinuse(const Message&);
-    void handle_privmsg_or_notice(const Message&, PrivmsgOrNotice);
-    void handle_nick(const Message&);
-    void handle(const Message&);
-    void handle_user_command(const String&);
-    void handle_ctcp_request(const StringView& peer, const StringView& payload);
-    void handle_ctcp_response(const StringView& peer, const StringView& payload);
-    void send_ctcp_request(const StringView& peer, const StringView& payload);
-    void send_ctcp_response(const StringView& peer, const StringView& payload);
-
-    void on_socket_connected();
-
-    String m_hostname;
-    int m_port { 6667 };
-
-    RefPtr<Core::TCPSocket> m_socket;
-
-    String m_nickname;
-    RefPtr<Core::Notifier> m_notifier;
-    HashMap<String, RefPtr<IRCChannel>, CaseInsensitiveStringTraits> m_channels;
-    HashMap<String, RefPtr<IRCQuery>, CaseInsensitiveStringTraits> m_queries;
-
-    bool m_show_join_part_messages { 1 };
-    bool m_show_nick_change_messages { 1 };
-
-    bool m_notify_on_message { 1 };
-    bool m_notify_on_mention { 1 };
-
-    String m_ctcp_version_reply;
-    String m_ctcp_userinfo_reply;
-    String m_ctcp_finger_reply;
-
-    Vector<IRCWindow*> m_windows;
-
-    IRCWindow* m_server_subwindow { nullptr };
-
-    NonnullRefPtr<IRCWindowListModel> m_client_window_list_model;
-    NonnullRefPtr<IRCLogBuffer> m_log;
-    NonnullRefPtr<Core::ConfigFile> m_config;
-};
diff --git a/Applications/IRCClient/IRCLogBuffer.cpp b/Applications/IRCClient/IRCLogBuffer.cpp
deleted file mode 100644
index b292e0a4ee..0000000000
--- a/Applications/IRCClient/IRCLogBuffer.cpp
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "IRCLogBuffer.h"
-#include <AK/StringBuilder.h>
-#include <LibWeb/DOM/DocumentFragment.h>
-#include <LibWeb/DOM/DocumentType.h>
-#include <LibWeb/DOM/ElementFactory.h>
-#include <LibWeb/DOM/Text.h>
-#include <LibWeb/HTML/HTMLBodyElement.h>
-#include <time.h>
-
-NonnullRefPtr<IRCLogBuffer> IRCLogBuffer::create()
-{
-    return adopt(*new IRCLogBuffer);
-}
-
-IRCLogBuffer::IRCLogBuffer()
-{
-    m_document = Web::DOM::Document::create();
-    m_document->append_child(adopt(*new Web::DOM::DocumentType(document())));
-    auto html_element = m_document->create_element("html");
-    m_document->append_child(html_element);
-    auto head_element = m_document->create_element("head");
-    html_element->append_child(head_element);
-    auto style_element = m_document->create_element("style");
-    style_element->append_child(adopt(*new Web::DOM::Text(document(), "div { font-family: Csilla; font-weight: lighter; }")));
-    head_element->append_child(style_element);
-    auto body_element = m_document->create_element("body");
-    html_element->append_child(body_element);
-    m_container_element = body_element;
-}
-
-IRCLogBuffer::~IRCLogBuffer()
-{
-}
-
-static String timestamp_string()
-{
-    auto now = time(nullptr);
-    auto* tm = localtime(&now);
-    return String::formatted("{:02}:{:02}:{:02} ", tm->tm_hour, tm->tm_min, tm->tm_sec);
-}
-
-void IRCLogBuffer::add_message(char prefix, const String& name, const String& text, Color color)
-{
-    auto nick_string = String::formatted("<{}{}> ", prefix ? prefix : ' ', name.characters());
-    auto html = String::formatted(
-        "<span>{}</span>"
-        "<b>{}</b>"
-        "<span>{}</span>",
-        timestamp_string(),
-        escape_html_entities(nick_string),
-        escape_html_entities(text));
-
-    auto wrapper = m_document->create_element(Web::HTML::TagNames::div);
-    wrapper->set_attribute(Web::HTML::AttributeNames::style, String::formatted("color: {}", color.to_string()));
-    wrapper->set_inner_html(html);
-    m_container_element->append_child(wrapper);
-    m_document->force_layout();
-}
-
-void IRCLogBuffer::add_message(const String& text, Color color)
-{
-    auto html = String::formatted(
-        "<span>{}</span>"
-        "<span>{}</span>",
-        timestamp_string(),
-        escape_html_entities(text));
-    auto wrapper = m_document->create_element(Web::HTML::TagNames::div);
-    wrapper->set_attribute(Web::HTML::AttributeNames::style, String::formatted("color: {}", color.to_string()));
-    wrapper->set_inner_html(html);
-    m_container_element->append_child(wrapper);
-    m_document->force_layout();
-}
diff --git a/Applications/IRCClient/IRCLogBuffer.h b/Applications/IRCClient/IRCLogBuffer.h
deleted file mode 100644
index db4636f0ee..0000000000
--- a/Applications/IRCClient/IRCLogBuffer.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/RefCounted.h>
-#include <AK/RefPtr.h>
-#include <AK/String.h>
-#include <LibGfx/Color.h>
-#include <LibWeb/DOM/Document.h>
-
-class IRCLogBuffer : public RefCounted<IRCLogBuffer> {
-public:
-    static NonnullRefPtr<IRCLogBuffer> create();
-    ~IRCLogBuffer();
-
-    struct Message {
-        time_t timestamp { 0 };
-        char prefix { 0 };
-        String sender;
-        String text;
-        Color color { Color::Black };
-    };
-
-    void add_message(char prefix, const String& name, const String& text, Color = Color::Black);
-    void add_message(const String& text, Color = Color::Black);
-
-    const Web::DOM::Document& document() const { return *m_document; }
-    Web::DOM::Document& document() { return *m_document; }
-
-private:
-    IRCLogBuffer();
-    RefPtr<Web::DOM::Document> m_document;
-    RefPtr<Web::DOM::Element> m_container_element;
-};
diff --git a/Applications/IRCClient/IRCQuery.cpp b/Applications/IRCClient/IRCQuery.cpp
deleted file mode 100644
index e2795f05d8..0000000000
--- a/Applications/IRCClient/IRCQuery.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "IRCQuery.h"
-#include "IRCClient.h"
-#include <stdio.h>
-
-IRCQuery::IRCQuery(IRCClient& client, const String& name)
-    : m_client(client)
-    , m_name(name)
-    , m_log(IRCLogBuffer::create())
-{
-    m_window = m_client->aid_create_window(this, IRCWindow::Query, m_name);
-    m_window->set_log_buffer(*m_log);
-}
-
-IRCQuery::~IRCQuery()
-{
-}
-
-NonnullRefPtr<IRCQuery> IRCQuery::create(IRCClient& client, const String& name)
-{
-    return adopt(*new IRCQuery(client, name));
-}
-
-void IRCQuery::add_message(char prefix, const String& name, const String& text, Color color)
-{
-    log().add_message(prefix, name, text, color);
-    window().did_add_message(name, text);
-}
-
-void IRCQuery::add_message(const String& text, Color color)
-{
-    log().add_message(text, color);
-    window().did_add_message();
-}
-
-void IRCQuery::say(const String& text)
-{
-    m_client->send_privmsg(m_name, text);
-    add_message(' ', m_client->nickname(), text);
-}
diff --git a/Applications/IRCClient/IRCQuery.h b/Applications/IRCClient/IRCQuery.h
deleted file mode 100644
index 379d9d6492..0000000000
--- a/Applications/IRCClient/IRCQuery.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "IRCLogBuffer.h"
-#include <AK/CircularQueue.h>
-#include <AK/RefCounted.h>
-#include <AK/RefPtr.h>
-#include <AK/String.h>
-#include <AK/Vector.h>
-
-class IRCClient;
-class IRCWindow;
-
-class IRCQuery : public RefCounted<IRCQuery> {
-public:
-    static NonnullRefPtr<IRCQuery> create(IRCClient&, const String& name);
-    ~IRCQuery();
-
-    String name() const { return m_name; }
-    void add_message(char prefix, const String& name, const String& text, Color = Color::Black);
-    void add_message(const String& text, Color = Color::Black);
-
-    const IRCLogBuffer& log() const { return *m_log; }
-    IRCLogBuffer& log() { return *m_log; }
-
-    void say(const String&);
-
-    IRCWindow& window() { return *m_window; }
-    const IRCWindow& window() const { return *m_window; }
-
-private:
-    IRCQuery(IRCClient&, const String& name);
-
-    NonnullRefPtr<IRCClient> m_client;
-    String m_name;
-    RefPtr<IRCWindow> m_window;
-
-    NonnullRefPtr<IRCLogBuffer> m_log;
-};
diff --git a/Applications/IRCClient/IRCWindow.cpp b/Applications/IRCClient/IRCWindow.cpp
deleted file mode 100644
index 7a84795b8f..0000000000
--- a/Applications/IRCClient/IRCWindow.cpp
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "IRCWindow.h"
-#include "IRCChannel.h"
-#include "IRCChannelMemberListModel.h"
-#include "IRCClient.h"
-#include <AK/StringBuilder.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/InputBox.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Notification.h>
-#include <LibGUI/Splitter.h>
-#include <LibGUI/TableView.h>
-#include <LibGUI/TextBox.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGUI/Window.h>
-#include <LibWeb/InProcessWebView.h>
-
-IRCWindow::IRCWindow(IRCClient& client, void* owner, Type type, const String& name)
-    : m_client(client)
-    , m_owner(owner)
-    , m_type(type)
-    , m_name(name)
-{
-    set_layout<GUI::VerticalBoxLayout>();
-
-    // Make a container for the log buffer view + (optional) member list.
-    auto& container = add<GUI::HorizontalSplitter>();
-
-    m_page_view = container.add<Web::InProcessWebView>();
-
-    if (m_type == Channel) {
-        auto& member_view = container.add<GUI::TableView>();
-        member_view.set_column_headers_visible(false);
-        member_view.set_fixed_width(100);
-        member_view.set_alternating_row_colors(false);
-        member_view.set_model(channel().member_model());
-        member_view.set_activates_on_selection(true);
-        member_view.on_activation = [&](auto& index) {
-            if (!index.is_valid())
-                return;
-            auto nick = channel().member_model()->nick_at(member_view.selection().first());
-            if (nick.is_empty())
-                return;
-            m_client->handle_open_query_action(m_client->nick_without_prefix(nick.characters()));
-        };
-        member_view.on_context_menu_request = [&](const GUI::ModelIndex& index, const GUI::ContextMenuEvent& event) {
-            if (!index.is_valid())
-                return;
-
-            m_context_menu = GUI::Menu::construct();
-
-            m_context_menu->add_action(GUI::Action::create("Open query", Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-open-query.png"), [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_open_query_action(m_client->nick_without_prefix(nick.characters()));
-            }));
-
-            m_context_menu->add_action(GUI::Action::create("Whois", Gfx::Bitmap::load_from_file("/res/icons/16x16/irc-whois.png"), [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_whois_action(m_client->nick_without_prefix(nick.characters()));
-            }));
-
-            auto& context_control_menu = m_context_menu->add_submenu("Control");
-
-            context_control_menu.add_action(GUI::Action::create("Voice", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_voice_user_action(m_name.characters(), m_client->nick_without_prefix(nick.characters()));
-            }));
-
-            context_control_menu.add_action(GUI::Action::create("DeVoice", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_devoice_user_action(m_name.characters(), m_client->nick_without_prefix(nick.characters()));
-            }));
-
-            context_control_menu.add_action(GUI::Action::create("Hop", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_hop_user_action(m_name.characters(), m_client->nick_without_prefix(nick.characters()));
-            }));
-
-            context_control_menu.add_action(GUI::Action::create("DeHop", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_dehop_user_action(m_name.characters(), m_client->nick_without_prefix(nick.characters()));
-            }));
-
-            context_control_menu.add_action(GUI::Action::create("Op", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_op_user_action(m_name.characters(), m_client->nick_without_prefix(nick.characters()));
-            }));
-
-            context_control_menu.add_action(GUI::Action::create("DeOp", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_deop_user_action(m_name.characters(), m_client->nick_without_prefix(nick.characters()));
-            }));
-
-            context_control_menu.add_separator();
-
-            context_control_menu.add_action(GUI::Action::create("Kick", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                if (IRCClient::is_nick_prefix(nick[0]))
-                    nick = nick.substring(1, nick.length() - 1);
-                String value;
-                if (GUI::InputBox::show(value, window(), "Enter reason:", "Reason") == GUI::InputBox::ExecOK)
-                    m_client->handle_kick_user_action(m_name.characters(), m_client->nick_without_prefix(nick.characters()), value);
-            }));
-
-            auto& context_ctcp_menu = m_context_menu->add_submenu("CTCP");
-
-            context_ctcp_menu.add_action(GUI::Action::create("User info", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_ctcp_user_action(m_client->nick_without_prefix(nick.characters()), "USERINFO");
-            }));
-
-            context_ctcp_menu.add_action(GUI::Action::create("Finger", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_ctcp_user_action(m_client->nick_without_prefix(nick.characters()), "FINGER");
-            }));
-
-            context_ctcp_menu.add_action(GUI::Action::create("Time", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_ctcp_user_action(m_client->nick_without_prefix(nick.characters()), "TIME");
-            }));
-
-            context_ctcp_menu.add_action(GUI::Action::create("Version", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_ctcp_user_action(m_client->nick_without_prefix(nick.characters()), "VERSION");
-            }));
-
-            context_ctcp_menu.add_action(GUI::Action::create("Client info", [&](const GUI::Action&) {
-                auto nick = channel().member_model()->nick_at(member_view.selection().first());
-                if (nick.is_empty())
-                    return;
-                m_client->handle_ctcp_user_action(m_client->nick_without_prefix(nick.characters()), "CLIENTINFO");
-            }));
-
-            m_context_menu->popup(event.screen_position());
-        };
-    }
-
-    m_text_box = add<GUI::TextBox>();
-    m_text_box->set_fixed_height(19);
-    m_text_box->on_return_pressed = [this] {
-        if (m_type == Channel)
-            m_client->handle_user_input_in_channel(m_name, m_text_box->text());
-        else if (m_type == Query)
-            m_client->handle_user_input_in_query(m_name, m_text_box->text());
-        else if (m_type == Server)
-            m_client->handle_user_input_in_server(m_text_box->text());
-        m_text_box->add_current_text_to_history();
-        m_text_box->clear();
-    };
-    m_text_box->set_history_enabled(true);
-    m_text_box->set_placeholder("Message");
-
-    m_client->register_subwindow(*this);
-}
-
-IRCWindow::~IRCWindow()
-{
-    m_client->unregister_subwindow(*this);
-}
-
-void IRCWindow::set_log_buffer(const IRCLogBuffer& log_buffer)
-{
-    m_log_buffer = &log_buffer;
-    m_page_view->set_document(const_cast<Web::DOM::Document*>(&log_buffer.document()));
-}
-
-bool IRCWindow::is_active() const
-{
-    return m_client->current_window() == this;
-}
-
-void IRCWindow::post_notification_if_needed(const String& name, const String& message)
-{
-    if (name.is_null() || message.is_null())
-        return;
-    if (is_active() && window()->is_active())
-        return;
-
-    auto notification = GUI::Notification::construct();
-
-    if (type() == Type::Channel) {
-        if (!m_client->notify_on_mention())
-            return;
-        if (!message.contains(m_client->nickname()))
-            return;
-
-        StringBuilder builder;
-        builder.append(name);
-        builder.append(" in ");
-        builder.append(m_name);
-        notification->set_title(builder.to_string());
-    } else {
-        if (!m_client->notify_on_message())
-            return;
-        notification->set_title(name);
-    }
-
-    notification->set_icon(Gfx::Bitmap::load_from_file("/res/icons/32x32/app-irc-client.png"));
-    notification->set_text(message);
-    notification->show();
-}
-
-void IRCWindow::did_add_message(const String& name, const String& message)
-{
-    post_notification_if_needed(name, message);
-
-    if (!is_active()) {
-        ++m_unread_count;
-        m_client->aid_update_window_list();
-        return;
-    }
-    m_page_view->scroll_to_bottom();
-}
-
-void IRCWindow::clear_unread_count()
-{
-    if (!m_unread_count)
-        return;
-    m_unread_count = 0;
-    m_client->aid_update_window_list();
-}
-
-int IRCWindow::unread_count() const
-{
-    return m_unread_count;
-}
diff --git a/Applications/IRCClient/IRCWindow.h b/Applications/IRCClient/IRCWindow.h
deleted file mode 100644
index a26e00d65e..0000000000
--- a/Applications/IRCClient/IRCWindow.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Widget.h>
-#include <LibWeb/Forward.h>
-
-class IRCChannel;
-class IRCClient;
-class IRCQuery;
-class IRCLogBuffer;
-
-class IRCWindow : public GUI::Widget {
-    C_OBJECT(IRCWindow)
-public:
-    enum Type {
-        Server,
-        Channel,
-        Query,
-    };
-
-    virtual ~IRCWindow() override;
-
-    String name() const { return m_name; }
-    void set_name(const String& name) { m_name = name; }
-
-    Type type() const { return m_type; }
-
-    void set_log_buffer(const IRCLogBuffer&);
-
-    bool is_active() const;
-
-    int unread_count() const;
-    void clear_unread_count();
-
-    void did_add_message(const String& name = {}, const String& message = {});
-
-    IRCChannel& channel() { return *(IRCChannel*)m_owner; }
-    const IRCChannel& channel() const { return *(const IRCChannel*)m_owner; }
-
-    IRCQuery& query() { return *(IRCQuery*)m_owner; }
-    const IRCQuery& query() const { return *(const IRCQuery*)m_owner; }
-
-private:
-    IRCWindow(IRCClient&, void* owner, Type, const String& name);
-
-    void post_notification_if_needed(const String& name, const String& message);
-
-    NonnullRefPtr<IRCClient> m_client;
-    void* m_owner { nullptr };
-    Type m_type;
-    String m_name;
-    RefPtr<Web::InProcessWebView> m_page_view;
-    RefPtr<GUI::TextBox> m_text_box;
-    RefPtr<IRCLogBuffer> m_log_buffer;
-    RefPtr<GUI::Menu> m_context_menu;
-    int m_unread_count { 0 };
-};
diff --git a/Applications/IRCClient/IRCWindowListModel.cpp b/Applications/IRCClient/IRCWindowListModel.cpp
deleted file mode 100644
index 7ee68c429e..0000000000
--- a/Applications/IRCClient/IRCWindowListModel.cpp
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "IRCWindowListModel.h"
-#include "IRCChannel.h"
-#include "IRCClient.h"
-
-IRCWindowListModel::IRCWindowListModel(IRCClient& client)
-    : m_client(client)
-{
-}
-
-IRCWindowListModel::~IRCWindowListModel()
-{
-}
-
-int IRCWindowListModel::row_count(const GUI::ModelIndex&) const
-{
-    return m_client->window_count();
-}
-
-int IRCWindowListModel::column_count(const GUI::ModelIndex&) const
-{
-    return 1;
-}
-
-String IRCWindowListModel::column_name(int column) const
-{
-    switch (column) {
-    case Column::Name:
-        return "Name";
-    }
-    ASSERT_NOT_REACHED();
-}
-
-GUI::Variant IRCWindowListModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
-{
-    if (role == GUI::ModelRole::TextAlignment)
-        return Gfx::TextAlignment::CenterLeft;
-    if (role == GUI::ModelRole::Display) {
-        switch (index.column()) {
-        case Column::Name: {
-            auto& window = m_client->window_at(index.row());
-            if (window.unread_count())
-                return String::formatted("{} ({})", window.name(), window.unread_count());
-            return window.name();
-        }
-        }
-    }
-    if (role == GUI::ModelRole::ForegroundColor) {
-        switch (index.column()) {
-        case Column::Name: {
-            auto& window = m_client->window_at(index.row());
-            if (window.unread_count())
-                return Color(Color::Red);
-            if (!window.channel().is_open())
-                return Color(Color::WarmGray);
-            return Color(Color::Black);
-        }
-        }
-    }
-    return {};
-}
-
-void IRCWindowListModel::update()
-{
-    did_update();
-}
diff --git a/Applications/IRCClient/IRCWindowListModel.h b/Applications/IRCClient/IRCWindowListModel.h
deleted file mode 100644
index 88e5463b82..0000000000
--- a/Applications/IRCClient/IRCWindowListModel.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <LibGUI/Model.h>
-
-class IRCClient;
-class IRCWindow;
-
-class IRCWindowListModel final : public GUI::Model {
-public:
-    enum Column {
-        Name,
-    };
-
-    static NonnullRefPtr<IRCWindowListModel> create(IRCClient& client) { return adopt(*new IRCWindowListModel(client)); }
-    virtual ~IRCWindowListModel() override;
-
-    virtual int row_count(const GUI::ModelIndex&) const override;
-    virtual int column_count(const GUI::ModelIndex&) const override;
-    virtual String column_name(int column) const override;
-    virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
-    virtual void update() override;
-
-private:
-    explicit IRCWindowListModel(IRCClient&);
-
-    NonnullRefPtr<IRCClient> m_client;
-};
diff --git a/Applications/IRCClient/main.cpp b/Applications/IRCClient/main.cpp
deleted file mode 100644
index a0adf92c0d..0000000000
--- a/Applications/IRCClient/main.cpp
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "IRCAppWindow.h"
-#include "IRCClient.h"
-#include <LibCore/StandardPaths.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/MessageBox.h>
-#include <stdio.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio inet dns unix shared_buffer cpath rpath fattr wpath cpath", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (getuid() == 0) {
-        warnln("Refusing to run as root");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio inet dns unix shared_buffer rpath wpath cpath", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/tmp/portal/lookup", "rw") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/tmp/portal/notify", "rw") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/etc/passwd", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil(Core::StandardPaths::home_directory().characters(), "rwc") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil(nullptr, nullptr) < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    URL url = "";
-    if (app->args().size() >= 1) {
-        url = URL::create_with_url_or_path(app->args()[0]);
-
-        if (url.protocol().to_lowercase() == "ircs") {
-            warnln("Secure IRC over SSL/TLS (ircs) is not supported");
-            return 1;
-        }
-
-        if (url.protocol().to_lowercase() != "irc") {
-            warnln("Unsupported protocol");
-            return 1;
-        }
-
-        if (url.host().is_empty()) {
-            warnln("Invalid URL");
-            return 1;
-        }
-
-        if (!url.port() || url.port() == 80)
-            url.set_port(6667);
-    }
-
-    auto app_window = IRCAppWindow::construct(url.host(), url.port());
-    app_window->show();
-    return app->exec();
-}
diff --git a/Applications/KeyboardMapper/CMakeLists.txt b/Applications/KeyboardMapper/CMakeLists.txt
deleted file mode 100644
index fe24376eb1..0000000000
--- a/Applications/KeyboardMapper/CMakeLists.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-set(SOURCES
-    KeyboardMapperWidget.cpp
-    KeyButton.cpp
-    main.cpp
-)
-
-serenity_bin(KeyboardMapper)
-target_link_libraries(KeyboardMapper LibGUI LibKeyboard)
diff --git a/Applications/KeyboardMapper/KeyButton.cpp b/Applications/KeyboardMapper/KeyButton.cpp
deleted file mode 100644
index 58a687faca..0000000000
--- a/Applications/KeyboardMapper/KeyButton.cpp
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "KeyButton.h"
-#include <LibGUI/Button.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/Palette.h>
-
-KeyButton::~KeyButton()
-{
-}
-
-void KeyButton::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(event.rect());
-
-    auto cont_rect = rect();
-    auto& font = this->font();
-
-    Color color;
-    if (m_pressed) {
-        color = Color::Cyan;
-    } else if (!is_enabled()) {
-        color = Color::LightGray;
-    } else {
-        color = Color::White;
-    }
-
-    painter.fill_rect(cont_rect, Color::Black);
-    painter.fill_rect({ cont_rect.x() + 1, cont_rect.y() + 1, cont_rect.width() - 2, cont_rect.height() - 2 }, Color::from_rgb(0x999999));
-    painter.fill_rect({ cont_rect.x() + 6, cont_rect.y() + 3, cont_rect.width() - 12, cont_rect.height() - 12 }, Color::from_rgb(0x8C7272));
-    painter.fill_rect({ cont_rect.x() + 7, cont_rect.y() + 4, cont_rect.width() - 14, cont_rect.height() - 14 }, color);
-
-    if (!text().is_empty()) {
-        Gfx::IntRect text_rect { 0, 0, font.width(text()), font.glyph_height() };
-        text_rect.align_within({ cont_rect.x() + 7, cont_rect.y() + 4, cont_rect.width() - 14, cont_rect.height() - 14 }, Gfx::TextAlignment::Center);
-
-        painter.draw_text(text_rect, text(), font, Gfx::TextAlignment::Center, palette().button_text(), Gfx::TextElision::Right);
-        if (is_focused())
-            painter.draw_rect(text_rect.inflated(6, 4), palette().focus_outline());
-    }
-}
-
-void KeyButton::click(unsigned)
-{
-    if (on_click)
-        on_click();
-}
-
-void KeyButton::mousemove_event(GUI::MouseEvent& event)
-{
-    if (!is_enabled())
-        return;
-
-    Gfx::IntRect c = { rect().x() + 7, rect().y() + 4, rect().width() - 14, rect().height() - 14 };
-
-    if (c.contains(event.position())) {
-        window()->set_cursor(Gfx::StandardCursor::Hand);
-        return;
-    }
-    window()->set_cursor(Gfx::StandardCursor::Arrow);
-
-    AbstractButton::mousemove_event(event);
-}
-
-void KeyButton::leave_event(Core::Event& event)
-{
-    window()->set_cursor(Gfx::StandardCursor::Arrow);
-    AbstractButton::leave_event(event);
-}
diff --git a/Applications/KeyboardMapper/KeyButton.h b/Applications/KeyboardMapper/KeyButton.h
deleted file mode 100644
index afb57033b3..0000000000
--- a/Applications/KeyboardMapper/KeyButton.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/AbstractButton.h>
-
-class KeyButton : public GUI::AbstractButton {
-    C_OBJECT(KeyButton)
-
-public:
-    virtual ~KeyButton() override;
-
-    void set_pressed(bool value) { m_pressed = value; }
-
-    Function<void()> on_click;
-
-protected:
-    virtual void click(unsigned modifiers = 0) override;
-    virtual void leave_event(Core::Event&) override;
-    virtual void mousemove_event(GUI::MouseEvent&) override;
-    virtual void paint_event(GUI::PaintEvent&) override;
-
-private:
-    bool m_pressed { false };
-};
diff --git a/Applications/KeyboardMapper/KeyPositions.h b/Applications/KeyboardMapper/KeyPositions.h
deleted file mode 100644
index 3cd9dbaaf7..0000000000
--- a/Applications/KeyboardMapper/KeyPositions.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/String.h>
-
-struct KeyPosition {
-    u32 scancode;
-    int x;
-    int y;
-    int width;
-    int height;
-    bool enabled;
-    int map_index;
-    AK::String name;
-};
-
-#define KEY_COUNT 63
-
-struct KeyPosition keys[KEY_COUNT] = {
-    // clang-format off
-    [ 0] = {     0,   0,  0,   0,   0, false,  0, ""},
-
-    [ 1] = {  0x29,   0,  0,  50,  50,  true, 41, "`"},
-    [ 2] = {  0x02,  51,  0,  50,  50,  true,  2, "1"},
-    [ 3] = {  0x03, 102,  0,  50,  50,  true,  3, "2"},
-    [ 4] = {  0x04, 153,  0,  50,  50,  true,  4, "3"},
-    [ 5] = {  0x05, 204,  0,  50,  50,  true,  5, "4"},
-    [ 6] = {  0x06, 255,  0,  50,  50,  true,  6, "5"},
-    [ 7] = {  0x07, 306,  0,  50,  50,  true,  7, "6"},
-    [ 8] = {  0x08, 357,  0,  50,  50,  true,  8, "7"},
-    [ 9] = {  0x09, 408,  0,  50,  50,  true,  9, "8"},
-    [10] = {  0x0A, 459,  0,  50,  50,  true, 10, "9"},
-    [11] = {  0x0B, 510,  0,  50,  50,  true, 11, "0"},
-    [12] = {  0x0C, 561,  0,  50,  50,  true, 12, "-"},
-    [13] = {  0x0D, 612,  0,  50,  50,  true, 13, "="},
-    [14] = {  0x0E, 663,  0, 100,  50, false,  0, "back space"},
-
-    [15] = {  0x0F,   0,  52,  76,  50, false,  0, "tab"},
-    [16] = {  0x10,  77,  52,  50,  50,  true, 16, "q"},
-    [17] = {  0x11, 128,  52,  50,  50,  true, 17, "w"},
-    [18] = {  0x12, 179,  52,  50,  50,  true, 18, "e"},
-    [19] = {  0x13, 230,  52,  50,  50,  true, 19, "r"},
-    [20] = {  0x14, 281,  52,  50,  50,  true, 20, "t"},
-    [21] = {  0x15, 332,  52,  50,  50,  true, 21, "y"},
-    [22] = {  0x16, 383,  52,  50,  50,  true, 22, "u"},
-    [23] = {  0x17, 434,  52,  50,  50,  true, 23, "ı"},
-    [24] = {  0x18, 485,  52,  50,  50,  true, 24, "o"},
-    [25] = {  0x19, 536,  52,  50,  50,  true, 25, "p"},
-    [26] = {  0x1A, 587,  52,  50,  50,  true, 26, "["},
-    [27] = {  0x1B, 638,  52,  50,  50,  true, 27, "]"},
-    [28] = {  0x1C, 689,  52,  74,  50, false,  0, "enter"},
-
-    [29] = {  0x3A,   0, 104, 101,  50, false,  0, "caps lock"},
-    [30] = {  0x1E, 103, 104,  50,  50,  true, 30, "a"},
-    [31] = {  0x1F, 154, 104,  50,  50,  true, 31, "s"},
-    [32] = {  0x20, 205, 104,  50,  50,  true, 32, "d"},
-    [33] = {  0x21, 256, 104,  50,  50,  true, 33, "f"},
-    [34] = {  0x22, 307, 104,  50,  50,  true, 34, "g"},
-    [35] = {  0x23, 358, 104,  50,  50,  true, 35, "h"},
-    [36] = {  0x24, 409, 104,  50,  50,  true, 36, "j"},
-    [37] = {  0x25, 460, 104,  50,  50,  true, 37, "k"},
-    [38] = {  0x26, 511, 104,  50,  50,  true, 38, "l"},
-    [39] = {  0x27, 562, 104,  50,  50,  true, 39, ";"},
-    [40] = {  0x28, 614, 104,  50,  50,  true, 40, "\""},
-    [41] = {  0x2B, 665, 104,  50,  50,  true, 43, "\\"},
-
-    [42] = {  0x2A,   0, 156,  76,  50, false,  0, "left shift"},
-    [43] = {  0x56,  77, 156,  50,  50,  true, 86, "\\"},
-    [44] = {  0x2C, 128, 156,  50,  50,  true, 44, "z"},
-    [45] = {  0x2D, 179, 156,  50,  50,  true, 45, "x"},
-    [46] = {  0x2E, 230, 156,  50,  50,  true, 46, "c"},
-    [47] = {  0x2F, 281, 156,  50,  50,  true, 47, "v"},
-    [48] = {  0x30, 332, 156,  50,  50,  true, 48, "b"},
-    [49] = {  0x31, 383, 156,  50,  50,  true, 49, "n"},
-    [50] = {  0x32, 434, 156,  50,  50,  true, 50, "m"},
-    [51] = {  0x33, 485, 156,  50,  50,  true, 51, ","},
-    [52] = {  0x34, 536, 156,  50,  50,  true, 52, "."},
-    [53] = {  0x35, 587, 156,  50,  50,  true, 53, "/"},
-    [54] = {  0x36, 638, 156, 125,  50, false,  0, "right shift"},
-
-    [55] = {  0x1D,   0, 208,  76,  50, false,  0, "left ctrl"},
-    [56] = {0xE05B,  77, 208,  50,  50, false,  0, "left\nsuper"},
-    [57] = {  0x38, 128, 208,  50,  50, false,  0, "alt"},
-    [58] = {  0x39, 179, 208, 356,  50, false,  0, "space"},
-    [59] = {0xE038, 536, 208,  50,  50, false,  0, "alt gr"},
-    [60] = {0xE05C, 587, 208,  50,  50, false,  0, "right\nsuper"},
-    [61] = {0xE05D, 638, 208,  50,  50, false,  0, "menu"},
-    [62] = {0xE01D, 689, 208,  74,  50, false,  0, "right ctrl"}
-    // clang-format on
-};
diff --git a/Applications/KeyboardMapper/KeyboardMapperWidget.cpp b/Applications/KeyboardMapper/KeyboardMapperWidget.cpp
deleted file mode 100644
index 24df141a01..0000000000
--- a/Applications/KeyboardMapper/KeyboardMapperWidget.cpp
+++ /dev/null
@@ -1,293 +0,0 @@
-/*
- * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "KeyboardMapperWidget.h"
-#include "KeyPositions.h"
-#include <LibCore/File.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/InputBox.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/RadioButton.h>
-#include <LibKeyboard/CharacterMapFile.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <string.h>
-
-KeyboardMapperWidget::KeyboardMapperWidget()
-{
-    create_frame();
-}
-
-KeyboardMapperWidget::~KeyboardMapperWidget()
-{
-}
-
-void KeyboardMapperWidget::create_frame()
-{
-    set_fill_with_background_color(true);
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins({ 4, 4, 4, 4 });
-
-    auto& main_widget = add<GUI::Widget>();
-    main_widget.set_relative_rect(0, 0, 200, 200);
-
-    m_keys.resize(KEY_COUNT);
-
-    for (unsigned i = 0; i < KEY_COUNT; i++) {
-        Gfx::IntRect rect = { keys[i].x, keys[i].y, keys[i].width, keys[i].height };
-
-        auto& tmp_button = main_widget.add<KeyButton>();
-        tmp_button.set_relative_rect(rect);
-        tmp_button.set_text(keys[i].name);
-        tmp_button.set_enabled(keys[i].enabled);
-
-        tmp_button.on_click = [this, &tmp_button]() {
-            String value;
-            if (GUI::InputBox::show(value, window(), "New Character:", "Select Character") == GUI::InputBox::ExecOK) {
-                int i = m_keys.find_first_index(&tmp_button).value_or(0);
-                ASSERT(i > 0);
-
-                auto index = keys[i].map_index;
-                ASSERT(index > 0);
-
-                tmp_button.set_text(value);
-                u32* map;
-
-                if (m_current_map_name == "map") {
-                    map = m_character_map.map;
-                } else if (m_current_map_name == "shift_map") {
-                    map = m_character_map.shift_map;
-                } else if (m_current_map_name == "alt_map") {
-                    map = m_character_map.alt_map;
-                } else if (m_current_map_name == "altgr_map") {
-                    map = m_character_map.altgr_map;
-                } else if (m_current_map_name == "shift_altgr_map") {
-                    map = m_character_map.shift_altgr_map;
-                } else {
-                    ASSERT_NOT_REACHED();
-                }
-
-                if (value.length() == 0)
-                    map[index] = '\0'; // Empty string
-                else
-                    map[index] = value[0];
-
-                m_modified = true;
-                update_window_title();
-            }
-        };
-
-        m_keys.insert(i, &tmp_button);
-    }
-
-    // Action Buttons
-    auto& bottom_widget = add<GUI::Widget>();
-    bottom_widget.set_layout<GUI::HorizontalBoxLayout>();
-    bottom_widget.set_fixed_height(40);
-
-    // Map Selection
-    m_map_group = bottom_widget.add<GUI::Widget>();
-    m_map_group->set_layout<GUI::HorizontalBoxLayout>();
-    m_map_group->set_fixed_width(250);
-
-    auto& radio_map = m_map_group->add<GUI::RadioButton>("Default");
-    radio_map.set_name("map");
-    radio_map.on_checked = [&](bool) {
-        set_current_map("map");
-    };
-    auto& radio_shift = m_map_group->add<GUI::RadioButton>("Shift");
-    radio_shift.set_name("shift_map");
-    radio_shift.on_checked = [this](bool) {
-        set_current_map("shift_map");
-    };
-    auto& radio_altgr = m_map_group->add<GUI::RadioButton>("AltGr");
-    radio_altgr.set_name("altgr_map");
-    radio_altgr.on_checked = [this](bool) {
-        set_current_map("altgr_map");
-    };
-    auto& radio_alt = m_map_group->add<GUI::RadioButton>("Alt");
-    radio_alt.set_name("alt_map");
-    radio_alt.on_checked = [this](bool) {
-        set_current_map("alt_map");
-    };
-    auto& radio_shift_altgr = m_map_group->add<GUI::RadioButton>("Shift+AltGr");
-    radio_shift_altgr.set_name("shift_altgr_map");
-    radio_shift_altgr.on_checked = [this](bool) {
-        set_current_map("shift_altgr_map");
-    };
-
-    bottom_widget.layout()->add_spacer();
-
-    auto& ok_button = bottom_widget.add<GUI::Button>();
-    ok_button.set_text("Save");
-    ok_button.set_fixed_width(80);
-    ok_button.on_click = [this](auto) {
-        save();
-    };
-}
-
-void KeyboardMapperWidget::load_from_file(String file_name)
-{
-    auto result = Keyboard::CharacterMapFile::load_from_file(file_name);
-    if (!result.has_value()) {
-        ASSERT_NOT_REACHED();
-    }
-
-    m_file_name = file_name;
-    m_character_map = result.value();
-    set_current_map("map");
-
-    for (Widget* widget : m_map_group->child_widgets()) {
-        auto radio_button = (GUI::RadioButton*)widget;
-        radio_button->set_checked(radio_button->name() == "map");
-    }
-
-    update_window_title();
-}
-
-void KeyboardMapperWidget::save()
-{
-    save_to_file(m_file_name);
-}
-
-void KeyboardMapperWidget::save_to_file(const StringView& file_name)
-{
-    JsonObject map_json;
-
-    auto add_array = [&](String name, u32* values) {
-        JsonArray items;
-        for (int i = 0; i < 90; i++) {
-            AK::StringBuilder sb;
-            sb.append(values[i]);
-
-            JsonValue val(sb.to_string());
-            items.append(move(val));
-        }
-        map_json.set(name, move(items));
-    };
-
-    add_array("map", m_character_map.map);
-    add_array("shift_map", m_character_map.shift_map);
-    add_array("alt_map", m_character_map.alt_map);
-    add_array("altgr_map", m_character_map.altgr_map);
-    add_array("shift_altgr_map", m_character_map.shift_altgr_map);
-
-    // Write to file.
-    String file_content = map_json.to_string();
-
-    auto file = Core::File::construct(file_name);
-    file->open(Core::IODevice::WriteOnly);
-    if (!file->is_open()) {
-        StringBuilder sb;
-        sb.append("Failed to open ");
-        sb.append(file_name);
-        sb.append(" for write. Error: ");
-        sb.append(file->error_string());
-
-        GUI::MessageBox::show(window(), sb.to_string(), "Error", GUI::MessageBox::Type::Error);
-        return;
-    }
-
-    bool result = file->write(file_content);
-    if (!result) {
-        int error_number = errno;
-        StringBuilder sb;
-        sb.append("Unable to save file. Error: ");
-        sb.append(strerror(error_number));
-
-        GUI::MessageBox::show(window(), sb.to_string(), "Error", GUI::MessageBox::Type::Error);
-        return;
-    }
-
-    m_modified = false;
-    m_file_name = file_name;
-    update_window_title();
-}
-
-void KeyboardMapperWidget::keydown_event(GUI::KeyEvent& event)
-{
-    for (int i = 0; i < KEY_COUNT; i++) {
-        auto& tmp_button = m_keys.at(i);
-        tmp_button->set_pressed(keys[i].scancode == event.scancode());
-        tmp_button->update();
-    }
-}
-
-void KeyboardMapperWidget::keyup_event(GUI::KeyEvent& event)
-{
-    for (int i = 0; i < KEY_COUNT; i++) {
-        if (keys[i].scancode == event.scancode()) {
-            auto& tmp_button = m_keys.at(i);
-            tmp_button->set_pressed(false);
-            tmp_button->update();
-            break;
-        }
-    }
-}
-
-void KeyboardMapperWidget::set_current_map(const String current_map)
-{
-    m_current_map_name = current_map;
-    u32* map;
-
-    if (m_current_map_name == "map") {
-        map = m_character_map.map;
-    } else if (m_current_map_name == "shift_map") {
-        map = m_character_map.shift_map;
-    } else if (m_current_map_name == "alt_map") {
-        map = m_character_map.alt_map;
-    } else if (m_current_map_name == "altgr_map") {
-        map = m_character_map.altgr_map;
-    } else if (m_current_map_name == "shift_altgr_map") {
-        map = m_character_map.shift_altgr_map;
-    } else {
-        ASSERT_NOT_REACHED();
-    }
-
-    for (unsigned k = 0; k < KEY_COUNT; k++) {
-        auto index = keys[k].map_index;
-        if (index == 0)
-            continue;
-
-        AK::StringBuilder sb;
-        sb.append_code_point(map[index]);
-
-        m_keys.at(k)->set_text(sb.to_string());
-    }
-
-    this->update();
-}
-
-void KeyboardMapperWidget::update_window_title()
-{
-    StringBuilder sb;
-    sb.append(m_file_name);
-    if (m_modified)
-        sb.append(" (*)");
-    sb.append(" - KeyboardMapper");
-
-    window()->set_title(sb.to_string());
-}
diff --git a/Applications/KeyboardMapper/KeyboardMapperWidget.h b/Applications/KeyboardMapper/KeyboardMapperWidget.h
deleted file mode 100644
index e0df34ed78..0000000000
--- a/Applications/KeyboardMapper/KeyboardMapperWidget.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "KeyButton.h"
-#include <LibGUI/Button.h>
-#include <LibKeyboard/CharacterMapData.h>
-
-class KeyboardMapperWidget : public GUI::Widget {
-    C_OBJECT(KeyboardMapperWidget)
-
-public:
-    KeyboardMapperWidget();
-    virtual ~KeyboardMapperWidget() override;
-
-    void create_frame();
-    void load_from_file(const String);
-    void save();
-    void save_to_file(const StringView&);
-
-protected:
-    virtual void keydown_event(GUI::KeyEvent&) override;
-    virtual void keyup_event(GUI::KeyEvent&) override;
-
-    void set_current_map(const String);
-    void update_window_title();
-
-private:
-    Vector<KeyButton*> m_keys;
-    RefPtr<GUI::Widget> m_map_group;
-
-    String m_file_name;
-    Keyboard::CharacterMapData m_character_map;
-    String m_current_map_name;
-    bool m_modified { false };
-};
diff --git a/Applications/KeyboardMapper/main.cpp b/Applications/KeyboardMapper/main.cpp
deleted file mode 100644
index 0edeef72fe..0000000000
--- a/Applications/KeyboardMapper/main.cpp
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "KeyboardMapperWidget.h"
-#include <LibCore/ArgsParser.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-
-int main(int argc, char** argv)
-{
-    const char* path = nullptr;
-    Core::ArgsParser args_parser;
-    args_parser.add_positional_argument(path, "Keyboard character mapping file.", "file", Core::ArgsParser::Required::No);
-    args_parser.parse(argc, argv);
-
-    if (pledge("stdio thread rpath accept cpath wpath shared_buffer unix fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio thread rpath accept cpath wpath shared_buffer", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-keyboard-mapper");
-
-    auto window = GUI::Window::construct();
-    window->set_title("Keyboard Mapper");
-    window->set_icon(app_icon.bitmap_for_size(16));
-    window->set_main_widget<KeyboardMapperWidget>();
-    window->resize(775, 315);
-    window->set_resizable(false);
-    window->show();
-
-    auto keyboard_mapper_widget = (KeyboardMapperWidget*)window->main_widget();
-    if (path != nullptr) {
-        keyboard_mapper_widget->load_from_file(path);
-    } else {
-        keyboard_mapper_widget->load_from_file("/res/keymaps/en.json");
-    }
-
-    // Actions
-    auto open_action = GUI::CommonActions::make_open_action(
-        [&](auto&) {
-            Optional<String> path = GUI::FilePicker::get_open_filepath(window, "Open");
-            if (path.has_value()) {
-                keyboard_mapper_widget->load_from_file(path.value());
-            }
-        });
-
-    auto save_action = GUI::CommonActions::make_save_action(
-        [&](auto&) {
-            keyboard_mapper_widget->save();
-        });
-
-    auto save_as_action = GUI::CommonActions::make_save_as_action([&](auto&) {
-        String m_name = "Unnamed";
-        Optional<String> save_path = GUI::FilePicker::get_save_filepath(window, m_name, "json");
-        if (!save_path.has_value())
-            return;
-
-        keyboard_mapper_widget->save_to_file(save_path.value());
-    });
-
-    auto quit_action = GUI::CommonActions::make_quit_action(
-        [&](auto&) {
-            app->quit();
-        });
-
-    // Menu
-    auto menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = menubar->add_menu("Keyboard Mapper");
-    app_menu.add_action(open_action);
-    app_menu.add_action(save_action);
-    app_menu.add_action(save_as_action);
-    app_menu.add_separator();
-    app_menu.add_action(quit_action);
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Keyboard Mapper", app_icon, window));
-
-    app->set_menubar(move(menubar));
-
-    return app->exec();
-}
diff --git a/Applications/KeyboardSettings/CMakeLists.txt b/Applications/KeyboardSettings/CMakeLists.txt
deleted file mode 100644
index 62212cda36..0000000000
--- a/Applications/KeyboardSettings/CMakeLists.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-set(SOURCES
-    main.cpp
-)
-
-serenity_app(KeyboardSettings ICON app-keyboard-settings)
-target_link_libraries(KeyboardSettings LibGUI LibKeyboard)
diff --git a/Applications/KeyboardSettings/CharacterMapFileListModel.h b/Applications/KeyboardSettings/CharacterMapFileListModel.h
deleted file mode 100644
index 4fcd1d8123..0000000000
--- a/Applications/KeyboardSettings/CharacterMapFileListModel.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Vector.h>
-#include <LibGUI/Model.h>
-
-class CharacterMapFileListModel final : public GUI::Model {
-public:
-    static NonnullRefPtr<CharacterMapFileListModel> create(Vector<String>& file_names)
-    {
-        return adopt(*new CharacterMapFileListModel(file_names));
-    }
-
-    virtual ~CharacterMapFileListModel() override { }
-
-    virtual int row_count(const GUI::ModelIndex&) const override
-    {
-        return m_file_names.size();
-    }
-
-    virtual int column_count(const GUI::ModelIndex&) const override
-    {
-        return 1;
-    }
-
-    virtual GUI::Variant data(const GUI::ModelIndex& index, GUI::ModelRole role) const override
-    {
-        ASSERT(index.is_valid());
-        ASSERT(index.column() == 0);
-
-        if (role == GUI::ModelRole::Display)
-            return m_file_names.at(index.row());
-
-        return {};
-    }
-
-    virtual void update() override
-    {
-        did_update();
-    }
-
-private:
-    explicit CharacterMapFileListModel(Vector<String>& file_names)
-        : m_file_names(file_names)
-    {
-    }
-
-    Vector<String>& m_file_names;
-};
diff --git a/Applications/KeyboardSettings/main.cpp b/Applications/KeyboardSettings/main.cpp
deleted file mode 100644
index 8b515d815e..0000000000
--- a/Applications/KeyboardSettings/main.cpp
+++ /dev/null
@@ -1,202 +0,0 @@
-/*
- * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "CharacterMapFileListModel.h"
-#include <AK/JsonObject.h>
-#include <AK/QuickSort.h>
-#include <LibCore/ArgsParser.h>
-#include <LibCore/DirIterator.h>
-#include <LibCore/File.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/ComboBox.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/WindowServerConnection.h>
-#include <LibKeyboard/CharacterMap.h>
-#include <spawn.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio rpath accept cpath wpath shared_buffer unix fattr proc exec", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    // If there is no command line parameter go for GUI.
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio rpath accept shared_buffer proc exec", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/bin/keymap", "x") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/proc/keymap", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil(nullptr, nullptr)) {
-        perror("unveil");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-keyboard-settings");
-
-    auto proc_keymap = Core::File::construct("/proc/keymap");
-    if (!proc_keymap->open(Core::IODevice::OpenMode::ReadOnly))
-        ASSERT_NOT_REACHED();
-
-    auto json = JsonValue::from_string(proc_keymap->read_all());
-    ASSERT(json.has_value());
-    JsonObject keymap_object = json.value().as_object();
-    ASSERT(keymap_object.has("keymap"));
-    String current_keymap = keymap_object.get("keymap").to_string();
-    dbgln("KeyboardSettings thinks the current keymap is: {}", current_keymap);
-
-    Vector<String> character_map_files;
-    Core::DirIterator iterator("/res/keymaps/", Core::DirIterator::Flags::SkipDots);
-    if (iterator.has_error()) {
-        GUI::MessageBox::show(nullptr, String::formatted("Error on reading mapping file list: {}", iterator.error_string()), "Keyboard settings", GUI::MessageBox::Type::Error);
-        return -1;
-    }
-
-    while (iterator.has_next()) {
-        auto name = iterator.next_path();
-        name.replace(".json", "");
-        character_map_files.append(name);
-    }
-    quick_sort(character_map_files);
-
-    size_t initial_keymap_index = SIZE_MAX;
-    for (size_t i = 0; i < character_map_files.size(); ++i) {
-        if (character_map_files[i].equals_ignoring_case(current_keymap))
-            initial_keymap_index = i;
-    }
-    ASSERT(initial_keymap_index < character_map_files.size());
-
-    auto window = GUI::Window::construct();
-    window->set_title("Keyboard Settings");
-    window->resize(300, 70);
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    auto& root_widget = window->set_main_widget<GUI::Widget>();
-    root_widget.set_layout<GUI::VerticalBoxLayout>();
-    root_widget.set_fill_with_background_color(true);
-    root_widget.layout()->set_spacing(0);
-    root_widget.layout()->set_margins({ 4, 4, 4, 4 });
-
-    auto& character_map_file_selection_container = root_widget.add<GUI::Widget>();
-    character_map_file_selection_container.set_layout<GUI::HorizontalBoxLayout>();
-    character_map_file_selection_container.set_fixed_height(22);
-
-    auto& character_map_file_label = character_map_file_selection_container.add<GUI::Label>();
-    character_map_file_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    character_map_file_label.set_fixed_width(130);
-    character_map_file_label.set_text("Character Mapping File:");
-
-    auto& character_map_file_combo = character_map_file_selection_container.add<GUI::ComboBox>();
-    character_map_file_combo.set_only_allow_values_from_model(true);
-    character_map_file_combo.set_model(*CharacterMapFileListModel::create(character_map_files));
-    character_map_file_combo.set_selected_index(initial_keymap_index);
-
-    root_widget.layout()->add_spacer();
-
-    auto apply_settings = [&](bool quit) {
-        String character_map_file = character_map_file_combo.text();
-        if (character_map_file.is_empty()) {
-            GUI::MessageBox::show(window, "Please select character mapping file.", "Keyboard settings", GUI::MessageBox::Type::Error);
-            return;
-        }
-        pid_t child_pid;
-        const char* argv[] = { "/bin/keymap", character_map_file.characters(), nullptr };
-        if ((errno = posix_spawn(&child_pid, "/bin/keymap", nullptr, nullptr, const_cast<char**>(argv), environ))) {
-            perror("posix_spawn");
-            exit(1);
-        }
-        if (quit)
-            app->quit();
-    };
-
-    auto& bottom_widget = root_widget.add<GUI::Widget>();
-    bottom_widget.set_layout<GUI::HorizontalBoxLayout>();
-    bottom_widget.layout()->add_spacer();
-    bottom_widget.set_fixed_height(22);
-
-    auto& apply_button = bottom_widget.add<GUI::Button>();
-    apply_button.set_text("Apply");
-    apply_button.set_fixed_width(60);
-    apply_button.on_click = [&](auto) {
-        apply_settings(false);
-    };
-
-    auto& ok_button = bottom_widget.add<GUI::Button>();
-    ok_button.set_text("OK");
-    ok_button.set_fixed_width(60);
-    ok_button.on_click = [&](auto) {
-        apply_settings(true);
-    };
-
-    auto& cancel_button = bottom_widget.add<GUI::Button>();
-    cancel_button.set_text("Cancel");
-    cancel_button.set_fixed_width(60);
-    cancel_button.on_click = [&](auto) {
-        app->quit();
-    };
-
-    auto quit_action = GUI::CommonActions::make_quit_action(
-        [&](auto&) {
-            app->quit();
-        });
-
-    auto menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = menubar->add_menu("Keyboard Settings");
-    app_menu.add_action(quit_action);
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Keyboard Settings", app_icon, window));
-
-    app->set_menubar(move(menubar));
-
-    window->show();
-
-    return app->exec();
-}
diff --git a/Applications/MouseSettings/CMakeLists.txt b/Applications/MouseSettings/CMakeLists.txt
deleted file mode 100644
index f52df8d76c..0000000000
--- a/Applications/MouseSettings/CMakeLists.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-set(SOURCES
-    main.cpp
-)
-
-serenity_app(MouseSettings ICON app-mouse)
-target_link_libraries(MouseSettings LibGUI)
diff --git a/Applications/MouseSettings/main.cpp b/Applications/MouseSettings/main.cpp
deleted file mode 100644
index 74b07d0b0a..0000000000
--- a/Applications/MouseSettings/main.cpp
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Copyright (c) 2020, Idan Horowitz <idan.horowitz@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/GroupBox.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/Slider.h>
-#include <LibGUI/SpinBox.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-#include <LibGUI/WindowServerConnection.h>
-#include <LibGfx/SystemTheme.h>
-#include <WindowServer/Screen.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio cpath rpath shared_buffer unix fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio cpath rpath shared_buffer", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-mouse");
-    auto window = GUI::Window::construct();
-    window->set_title("Mouse Settings");
-    window->resize(200, 130);
-    window->set_resizable(false);
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    auto& settings = window->set_main_widget<GUI::Widget>();
-    settings.set_fill_with_background_color(true);
-    settings.set_background_role(ColorRole::Button);
-    settings.set_layout<GUI::VerticalBoxLayout>();
-    settings.layout()->set_margins({ 4, 4, 4, 4 });
-
-    auto& speed_container = settings.add<GUI::GroupBox>("Mouse speed");
-    speed_container.set_layout<GUI::VerticalBoxLayout>();
-    speed_container.layout()->set_margins({ 6, 16, 6, 6 });
-    speed_container.set_fixed_height(50);
-
-    auto& speed_slider = speed_container.add<GUI::HorizontalSlider>();
-    const auto scalar = 1000.0;
-    speed_slider.set_range(WindowServer::mouse_accel_min * scalar, WindowServer::mouse_accel_max * scalar); // These values are scaled down (by a factor of 1000) to get fractional values
-    int current_value = GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::GetMouseAcceleration>()->factor() * scalar;
-    speed_slider.set_value(current_value);
-
-    auto& scroll_container = settings.add<GUI::GroupBox>("Scroll length");
-    scroll_container.set_layout<GUI::VerticalBoxLayout>();
-    scroll_container.layout()->set_margins({ 6, 16, 6, 6 });
-    scroll_container.set_fixed_height(46);
-
-    auto& scroll_spinbox = scroll_container.add<GUI::SpinBox>();
-    scroll_spinbox.set_min(WindowServer::scroll_step_size_min);
-    scroll_spinbox.set_value(GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::GetScrollStepSize>()->step_size());
-
-    auto update_window_server = [&]() {
-        float factor = speed_slider.value() / scalar;
-        GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::SetMouseAcceleration>(factor);
-        GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::SetScrollStepSize>(scroll_spinbox.value());
-    };
-
-    auto& prompt_buttons = settings.add<GUI::Widget>();
-    prompt_buttons.set_layout<GUI::HorizontalBoxLayout>();
-    prompt_buttons.set_fixed_height(22);
-
-    auto& ok_button = prompt_buttons.add<GUI::Button>();
-    ok_button.set_text("OK");
-    prompt_buttons.set_fixed_height(22);
-    ok_button.on_click = [&](auto) {
-        update_window_server();
-        app->quit();
-    };
-    auto& apply_button = prompt_buttons.add<GUI::Button>();
-    apply_button.set_text("Apply");
-    prompt_buttons.set_fixed_height(22);
-    apply_button.on_click = [&](auto) {
-        update_window_server();
-    };
-    auto& reset_button = prompt_buttons.add<GUI::Button>();
-    reset_button.set_text("Reset");
-    prompt_buttons.set_fixed_height(22);
-    reset_button.on_click = [&](auto) {
-        speed_slider.set_value(scalar);
-        scroll_spinbox.set_value(4);
-        update_window_server();
-    };
-
-    auto menubar = GUI::MenuBar::construct();
-    auto& app_menu = menubar->add_menu("Mouse Settings");
-    app_menu.add_action(GUI::CommonActions::make_quit_action([&](auto&) {
-        app->quit();
-    }));
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Mouse Settings", app_icon, window));
-    app->set_menubar(move(menubar));
-
-    window->show();
-    return app->exec();
-}
diff --git a/Applications/Piano/CMakeLists.txt b/Applications/Piano/CMakeLists.txt
deleted file mode 100644
index 382e023c3b..0000000000
--- a/Applications/Piano/CMakeLists.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-set(SOURCES
-    Track.cpp
-    TrackManager.cpp
-    KeysWidget.cpp
-    KnobsWidget.cpp
-    main.cpp
-    MainWidget.cpp
-    RollWidget.cpp
-    SamplerWidget.cpp
-    WaveWidget.cpp
-)
-
-serenity_app(Piano ICON app-piano)
-target_link_libraries(Piano LibAudio LibGUI)
diff --git a/Applications/Piano/KeysWidget.cpp b/Applications/Piano/KeysWidget.cpp
deleted file mode 100644
index 65fcdc39b5..0000000000
--- a/Applications/Piano/KeysWidget.cpp
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "KeysWidget.h"
-#include "TrackManager.h"
-#include <LibGUI/Painter.h>
-
-KeysWidget::KeysWidget(TrackManager& track_manager)
-    : m_track_manager(track_manager)
-{
-    set_fill_with_background_color(true);
-}
-
-KeysWidget::~KeysWidget()
-{
-}
-
-int KeysWidget::mouse_note() const
-{
-    if (m_mouse_down && m_mouse_note + m_track_manager.octave_base() < note_count)
-        return m_mouse_note; // Can be -1.
-    else
-        return -1;
-}
-
-void KeysWidget::set_key(int key, Switch switch_key)
-{
-    if (key == -1 || key + m_track_manager.octave_base() >= note_count)
-        return;
-
-    if (switch_key == On) {
-        ++m_key_on[key];
-    } else {
-        if (m_key_on[key] >= 1)
-            --m_key_on[key];
-    }
-    ASSERT(m_key_on[key] <= 2);
-
-    m_track_manager.set_note_current_octave(key, switch_key);
-}
-
-bool KeysWidget::note_is_set(int note) const
-{
-    if (note < m_track_manager.octave_base())
-        return false;
-
-    if (note >= m_track_manager.octave_base() + note_count)
-        return false;
-
-    return m_key_on[note - m_track_manager.octave_base()] != 0;
-}
-
-int KeysWidget::key_code_to_key(int key_code) const
-{
-    switch (key_code) {
-    case Key_A:
-        return 0;
-    case Key_W:
-        return 1;
-    case Key_S:
-        return 2;
-    case Key_E:
-        return 3;
-    case Key_D:
-        return 4;
-    case Key_F:
-        return 5;
-    case Key_T:
-        return 6;
-    case Key_G:
-        return 7;
-    case Key_Y:
-        return 8;
-    case Key_H:
-        return 9;
-    case Key_U:
-        return 10;
-    case Key_J:
-        return 11;
-    case Key_K:
-        return 12;
-    case Key_O:
-        return 13;
-    case Key_L:
-        return 14;
-    case Key_P:
-        return 15;
-    case Key_Semicolon:
-        return 16;
-    case Key_Apostrophe:
-        return 17;
-    case Key_RightBracket:
-        return 18;
-    case Key_Return:
-        return 19;
-    default:
-        return -1;
-    }
-}
-
-constexpr int white_key_width = 24;
-constexpr int black_key_width = 16;
-constexpr int black_key_x_offset = black_key_width / 2;
-constexpr int black_key_height = 60;
-
-constexpr char white_key_labels[] = {
-    'A',
-    'S',
-    'D',
-    'F',
-    'G',
-    'H',
-    'J',
-    'K',
-    'L',
-    ';',
-    '\'',
-    'r',
-};
-constexpr int white_key_labels_count = sizeof(white_key_labels) / sizeof(char);
-
-constexpr char black_key_labels[] = {
-    'W',
-    'E',
-    'T',
-    'Y',
-    'U',
-    'O',
-    'P',
-    ']',
-};
-constexpr int black_key_labels_count = sizeof(black_key_labels) / sizeof(char);
-
-constexpr int black_key_offsets[] = {
-    white_key_width,
-    white_key_width * 2,
-    white_key_width,
-    white_key_width,
-    white_key_width * 2,
-};
-
-constexpr int white_key_note_accumulator[] = {
-    2,
-    2,
-    1,
-    2,
-    2,
-    2,
-    1,
-};
-
-constexpr int black_key_note_accumulator[] = {
-    2,
-    3,
-    2,
-    2,
-    3,
-};
-
-void KeysWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Painter painter(*this);
-    painter.translate(frame_thickness(), frame_thickness());
-
-    int note = 0;
-    int x = 0;
-    int i = 0;
-    for (;;) {
-        Gfx::IntRect rect(x, 0, white_key_width, frame_inner_rect().height());
-        painter.fill_rect(rect, m_key_on[note] ? note_pressed_color : Color::White);
-        painter.draw_rect(rect, Color::Black);
-        if (i < white_key_labels_count) {
-            rect.set_height(rect.height() * 1.5);
-            painter.draw_text(rect, StringView(&white_key_labels[i], 1), Gfx::TextAlignment::Center, Color::Black);
-        }
-
-        note += white_key_note_accumulator[i % white_keys_per_octave];
-        x += white_key_width;
-        ++i;
-
-        if (note + m_track_manager.octave_base() >= note_count)
-            break;
-        if (x >= frame_inner_rect().width())
-            break;
-    }
-
-    note = 1;
-    x = white_key_width - black_key_x_offset;
-    i = 0;
-    for (;;) {
-        Gfx::IntRect rect(x, 0, black_key_width, black_key_height);
-        painter.fill_rect(rect, m_key_on[note] ? note_pressed_color : Color::Black);
-        painter.draw_rect(rect, Color::Black);
-        if (i < black_key_labels_count) {
-            rect.set_height(rect.height() * 1.5);
-            painter.draw_text(rect, StringView(&black_key_labels[i], 1), Gfx::TextAlignment::Center, Color::White);
-        }
-
-        note += black_key_note_accumulator[i % black_keys_per_octave];
-        x += black_key_offsets[i % black_keys_per_octave];
-        ++i;
-
-        if (note + m_track_manager.octave_base() >= note_count)
-            break;
-        if (x >= frame_inner_rect().width())
-            break;
-    }
-
-    GUI::Frame::paint_event(event);
-}
-
-constexpr int notes_per_white_key[] = {
-    1,
-    3,
-    5,
-    6,
-    8,
-    10,
-    12,
-};
-
-// Keep in mind that in any of these functions a note value can be out of
-// bounds. Bounds checking is done in set_key().
-
-static inline int note_from_white_keys(int white_keys)
-{
-    int octaves = white_keys / white_keys_per_octave;
-    int remainder = white_keys % white_keys_per_octave;
-    int notes_from_octaves = octaves * notes_per_octave;
-    int notes_from_remainder = notes_per_white_key[remainder];
-    int note = (notes_from_octaves + notes_from_remainder) - 1;
-    return note;
-}
-
-int KeysWidget::note_for_event_position(const Gfx::IntPoint& a_point) const
-{
-    if (!frame_inner_rect().contains(a_point))
-        return -1;
-
-    auto point = a_point;
-    point.move_by(-frame_thickness(), -frame_thickness());
-
-    int white_keys = point.x() / white_key_width;
-    int note = note_from_white_keys(white_keys);
-
-    bool black_key_on_left = note != 0 && key_pattern[(note - 1) % notes_per_octave] == Black;
-    if (black_key_on_left) {
-        int black_key_x = (white_keys * white_key_width) - black_key_x_offset;
-        Gfx::IntRect black_key(black_key_x, 0, black_key_width, black_key_height);
-        if (black_key.contains(point))
-            return note - 1;
-    }
-
-    bool black_key_on_right = key_pattern[(note + 1) % notes_per_octave] == Black;
-    if (black_key_on_right) {
-        int black_key_x = ((white_keys + 1) * white_key_width) - black_key_x_offset;
-        Gfx::IntRect black_key(black_key_x, 0, black_key_width, black_key_height);
-        if (black_key.contains(point))
-            return note + 1;
-    }
-
-    return note;
-}
-
-void KeysWidget::mousedown_event(GUI::MouseEvent& event)
-{
-    if (event.button() != GUI::MouseButton::Left)
-        return;
-
-    m_mouse_down = true;
-
-    m_mouse_note = note_for_event_position(event.position());
-
-    set_key(m_mouse_note, On);
-    update();
-}
-
-void KeysWidget::mouseup_event(GUI::MouseEvent& event)
-{
-    if (event.button() != GUI::MouseButton::Left)
-        return;
-
-    m_mouse_down = false;
-
-    set_key(m_mouse_note, Off);
-    update();
-}
-
-void KeysWidget::mousemove_event(GUI::MouseEvent& event)
-{
-    if (!m_mouse_down)
-        return;
-
-    int new_mouse_note = note_for_event_position(event.position());
-
-    if (m_mouse_note == new_mouse_note)
-        return;
-
-    set_key(m_mouse_note, Off);
-    set_key(new_mouse_note, On);
-    update();
-
-    m_mouse_note = new_mouse_note;
-}
diff --git a/Applications/Piano/KeysWidget.h b/Applications/Piano/KeysWidget.h
deleted file mode 100644
index d0b5a833ce..0000000000
--- a/Applications/Piano/KeysWidget.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Music.h"
-#include <LibGUI/Frame.h>
-
-class TrackManager;
-
-class KeysWidget final : public GUI::Frame {
-    C_OBJECT(KeysWidget)
-public:
-    virtual ~KeysWidget() override;
-
-    int key_code_to_key(int key_code) const;
-    int mouse_note() const;
-
-    void set_key(int key, Switch);
-    bool note_is_set(int note) const;
-
-private:
-    explicit KeysWidget(TrackManager&);
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void mousedown_event(GUI::MouseEvent&) override;
-    virtual void mouseup_event(GUI::MouseEvent&) override;
-    virtual void mousemove_event(GUI::MouseEvent&) override;
-
-    int note_for_event_position(const Gfx::IntPoint&) const;
-
-    TrackManager& m_track_manager;
-
-    u8 m_key_on[note_count] { 0 };
-
-    bool m_mouse_down { false };
-    int m_mouse_note { -1 };
-};
diff --git a/Applications/Piano/KnobsWidget.cpp b/Applications/Piano/KnobsWidget.cpp
deleted file mode 100644
index 4b9e4360c2..0000000000
--- a/Applications/Piano/KnobsWidget.cpp
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "KnobsWidget.h"
-#include "MainWidget.h"
-#include "TrackManager.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Slider.h>
-
-constexpr int max_attack = 1000;
-constexpr int max_decay = 1000;
-constexpr int max_sustain = 1000;
-constexpr int max_release = 1000;
-constexpr int max_delay = 8;
-
-KnobsWidget::KnobsWidget(TrackManager& track_manager, MainWidget& main_widget)
-    : m_track_manager(track_manager)
-    , m_main_widget(main_widget)
-{
-    set_layout<GUI::VerticalBoxLayout>();
-    set_fill_with_background_color(true);
-
-    m_labels_container = add<GUI::Widget>();
-    m_labels_container->set_layout<GUI::HorizontalBoxLayout>();
-    m_labels_container->set_fixed_height(20);
-
-    m_octave_label = m_labels_container->add<GUI::Label>("Octave");
-    m_wave_label = m_labels_container->add<GUI::Label>("Wave");
-    m_attack_label = m_labels_container->add<GUI::Label>("Attack");
-    m_decay_label = m_labels_container->add<GUI::Label>("Decay");
-    m_sustain_label = m_labels_container->add<GUI::Label>("Sustain");
-    m_release_label = m_labels_container->add<GUI::Label>("Release");
-    m_delay_label = m_labels_container->add<GUI::Label>("Delay");
-
-    m_values_container = add<GUI::Widget>();
-    m_values_container->set_layout<GUI::HorizontalBoxLayout>();
-    m_values_container->set_fixed_height(10);
-
-    m_octave_value = m_values_container->add<GUI::Label>(String::number(m_track_manager.octave()));
-    m_wave_value = m_values_container->add<GUI::Label>(wave_strings[m_track_manager.current_track().wave()]);
-    m_attack_value = m_values_container->add<GUI::Label>(String::number(m_track_manager.current_track().attack()));
-    m_decay_value = m_values_container->add<GUI::Label>(String::number(m_track_manager.current_track().decay()));
-    m_sustain_value = m_values_container->add<GUI::Label>(String::number(m_track_manager.current_track().sustain()));
-    m_release_value = m_values_container->add<GUI::Label>(String::number(m_track_manager.current_track().release()));
-    m_delay_value = m_values_container->add<GUI::Label>(String::number(m_track_manager.current_track().delay()));
-
-    m_knobs_container = add<GUI::Widget>();
-    m_knobs_container->set_layout<GUI::HorizontalBoxLayout>();
-
-    // FIXME: Implement vertical flipping in GUI::Slider, not here.
-
-    m_octave_knob = m_knobs_container->add<GUI::VerticalSlider>();
-    m_octave_knob->set_tooltip("Z: octave down, X: octave up");
-    m_octave_knob->set_range(octave_min - 1, octave_max - 1);
-    m_octave_knob->set_value((octave_max - 1) - (m_track_manager.octave() - 1));
-    m_octave_knob->on_change = [this](int value) {
-        int new_octave = octave_max - value;
-        if (m_change_underlying)
-            m_main_widget.set_octave_and_ensure_note_change(new_octave);
-        ASSERT(new_octave == m_track_manager.octave());
-        m_octave_value->set_text(String::number(new_octave));
-    };
-
-    m_wave_knob = m_knobs_container->add<GUI::VerticalSlider>();
-    m_wave_knob->set_tooltip("C: cycle through waveforms");
-    m_wave_knob->set_range(0, last_wave);
-    m_wave_knob->set_value(last_wave - m_track_manager.current_track().wave());
-    m_wave_knob->on_change = [this](int value) {
-        int new_wave = last_wave - value;
-        if (m_change_underlying)
-            m_track_manager.current_track().set_wave(new_wave);
-        ASSERT(new_wave == m_track_manager.current_track().wave());
-        m_wave_value->set_text(wave_strings[new_wave]);
-    };
-
-    m_attack_knob = m_knobs_container->add<GUI::VerticalSlider>();
-    m_attack_knob->set_range(0, max_attack);
-    m_attack_knob->set_value(max_attack - m_track_manager.current_track().attack());
-    m_attack_knob->set_step(100);
-    m_attack_knob->on_change = [this](int value) {
-        int new_attack = max_attack - value;
-        if (m_change_underlying)
-            m_track_manager.current_track().set_attack(new_attack);
-        ASSERT(new_attack == m_track_manager.current_track().attack());
-        m_attack_value->set_text(String::number(new_attack));
-    };
-
-    m_decay_knob = m_knobs_container->add<GUI::VerticalSlider>();
-    m_decay_knob->set_range(0, max_decay);
-    m_decay_knob->set_value(max_decay - m_track_manager.current_track().decay());
-    m_decay_knob->set_step(100);
-    m_decay_knob->on_change = [this](int value) {
-        int new_decay = max_decay - value;
-        if (m_change_underlying)
-            m_track_manager.current_track().set_decay(new_decay);
-        ASSERT(new_decay == m_track_manager.current_track().decay());
-        m_decay_value->set_text(String::number(new_decay));
-    };
-
-    m_sustain_knob = m_knobs_container->add<GUI::VerticalSlider>();
-    m_sustain_knob->set_range(0, max_sustain);
-    m_sustain_knob->set_value(max_sustain - m_track_manager.current_track().sustain());
-    m_sustain_knob->set_step(100);
-    m_sustain_knob->on_change = [this](int value) {
-        int new_sustain = max_sustain - value;
-        if (m_change_underlying)
-            m_track_manager.current_track().set_sustain(new_sustain);
-        ASSERT(new_sustain == m_track_manager.current_track().sustain());
-        m_sustain_value->set_text(String::number(new_sustain));
-    };
-
-    m_release_knob = m_knobs_container->add<GUI::VerticalSlider>();
-    m_release_knob->set_range(0, max_release);
-    m_release_knob->set_value(max_release - m_track_manager.current_track().release());
-    m_release_knob->set_step(100);
-    m_release_knob->on_change = [this](int value) {
-        int new_release = max_release - value;
-        if (m_change_underlying)
-            m_track_manager.current_track().set_release(new_release);
-        ASSERT(new_release == m_track_manager.current_track().release());
-        m_release_value->set_text(String::number(new_release));
-    };
-
-    m_delay_knob = m_knobs_container->add<GUI::VerticalSlider>();
-    m_delay_knob->set_range(0, max_delay);
-    m_delay_knob->set_value(max_delay - m_track_manager.current_track().delay());
-    m_delay_knob->on_change = [this](int value) {
-        int new_delay = max_delay - value;
-        if (m_change_underlying)
-            m_track_manager.current_track().set_delay(new_delay);
-        ASSERT(new_delay == m_track_manager.current_track().delay());
-        m_delay_value->set_text(String::number(new_delay));
-    };
-}
-
-KnobsWidget::~KnobsWidget()
-{
-}
-
-void KnobsWidget::update_knobs()
-{
-    m_wave_knob->set_value(last_wave - m_track_manager.current_track().wave());
-
-    // FIXME: This is needed because when the slider is changed normally, we
-    // need to change the underlying value, but if the keyboard was used, we
-    // need to change the slider without changing the underlying value.
-    m_change_underlying = false;
-
-    m_octave_knob->set_value(octave_max - m_track_manager.octave());
-    m_wave_knob->set_value(last_wave - m_track_manager.current_track().wave());
-    m_attack_knob->set_value(max_attack - m_track_manager.current_track().attack());
-    m_decay_knob->set_value(max_decay - m_track_manager.current_track().decay());
-    m_sustain_knob->set_value(max_sustain - m_track_manager.current_track().sustain());
-    m_release_knob->set_value(max_release - m_track_manager.current_track().release());
-    m_delay_knob->set_value(max_delay - m_track_manager.current_track().delay());
-
-    m_change_underlying = true;
-}
diff --git a/Applications/Piano/KnobsWidget.h b/Applications/Piano/KnobsWidget.h
deleted file mode 100644
index d5abea5be0..0000000000
--- a/Applications/Piano/KnobsWidget.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Frame.h>
-
-class TrackManager;
-class MainWidget;
-
-class KnobsWidget final : public GUI::Frame {
-    C_OBJECT(KnobsWidget)
-public:
-    virtual ~KnobsWidget() override;
-
-    void update_knobs();
-
-private:
-    KnobsWidget(TrackManager&, MainWidget&);
-
-    TrackManager& m_track_manager;
-    MainWidget& m_main_widget;
-
-    RefPtr<GUI::Widget> m_labels_container;
-    RefPtr<GUI::Label> m_octave_label;
-    RefPtr<GUI::Label> m_wave_label;
-    RefPtr<GUI::Label> m_attack_label;
-    RefPtr<GUI::Label> m_decay_label;
-    RefPtr<GUI::Label> m_sustain_label;
-    RefPtr<GUI::Label> m_release_label;
-    RefPtr<GUI::Label> m_delay_label;
-
-    RefPtr<GUI::Widget> m_values_container;
-    RefPtr<GUI::Label> m_octave_value;
-    RefPtr<GUI::Label> m_wave_value;
-    RefPtr<GUI::Label> m_attack_value;
-    RefPtr<GUI::Label> m_decay_value;
-    RefPtr<GUI::Label> m_sustain_value;
-    RefPtr<GUI::Label> m_release_value;
-    RefPtr<GUI::Label> m_delay_value;
-
-    RefPtr<GUI::Widget> m_knobs_container;
-    RefPtr<GUI::Slider> m_octave_knob;
-    RefPtr<GUI::Slider> m_wave_knob;
-    RefPtr<GUI::Slider> m_attack_knob;
-    RefPtr<GUI::Slider> m_decay_knob;
-    RefPtr<GUI::Slider> m_sustain_knob;
-    RefPtr<GUI::Slider> m_release_knob;
-    RefPtr<GUI::Slider> m_delay_knob;
-
-    bool m_change_underlying { true };
-};
diff --git a/Applications/Piano/MainWidget.cpp b/Applications/Piano/MainWidget.cpp
deleted file mode 100644
index ef40a4fd1a..0000000000
--- a/Applications/Piano/MainWidget.cpp
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "MainWidget.h"
-#include "KeysWidget.h"
-#include "KnobsWidget.h"
-#include "RollWidget.h"
-#include "SamplerWidget.h"
-#include "TrackManager.h"
-#include "WaveWidget.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/TabWidget.h>
-
-MainWidget::MainWidget(TrackManager& track_manager)
-    : m_track_manager(track_manager)
-{
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_spacing(2);
-    layout()->set_margins({ 2, 2, 2, 2 });
-    set_fill_with_background_color(true);
-
-    m_wave_widget = add<WaveWidget>(track_manager);
-    m_wave_widget->set_fixed_height(100);
-
-    m_tab_widget = add<GUI::TabWidget>();
-    m_roll_widget = m_tab_widget->add_tab<RollWidget>("Piano Roll", track_manager);
-
-    m_roll_widget->set_fixed_height(300);
-
-    m_tab_widget->add_tab<SamplerWidget>("Sampler", track_manager);
-
-    m_keys_and_knobs_container = add<GUI::Widget>();
-    m_keys_and_knobs_container->set_layout<GUI::HorizontalBoxLayout>();
-    m_keys_and_knobs_container->layout()->set_spacing(2);
-    m_keys_and_knobs_container->set_fixed_height(100);
-    m_keys_and_knobs_container->set_fill_with_background_color(true);
-
-    m_keys_widget = m_keys_and_knobs_container->add<KeysWidget>(track_manager);
-
-    m_knobs_widget = m_keys_and_knobs_container->add<KnobsWidget>(track_manager, *this);
-    m_knobs_widget->set_fixed_width(350);
-
-    m_roll_widget->set_keys_widget(m_keys_widget);
-}
-
-MainWidget::~MainWidget()
-{
-}
-
-void MainWidget::add_actions(GUI::Menu& menu)
-{
-    menu.add_action(GUI::Action::create("Add track", { Mod_Ctrl, Key_T }, [&](auto&) {
-        m_track_manager.add_track();
-    }));
-
-    menu.add_action(GUI::Action::create("Next track", { Mod_Ctrl, Key_N }, [&](auto&) {
-        turn_off_pressed_keys();
-        m_track_manager.next_track();
-        turn_on_pressed_keys();
-
-        m_knobs_widget->update_knobs();
-    }));
-}
-
-// FIXME: There are some unnecessary calls to update() throughout this program,
-// which are an easy target for optimization.
-
-void MainWidget::custom_event(Core::CustomEvent&)
-{
-    m_wave_widget->update();
-    m_roll_widget->update();
-}
-
-void MainWidget::keydown_event(GUI::KeyEvent& event)
-{
-    // This is to stop held-down keys from creating multiple events.
-    if (m_keys_pressed[event.key()])
-        return;
-    else
-        m_keys_pressed[event.key()] = true;
-
-    note_key_action(event.key(), On);
-    special_key_action(event.key());
-    m_keys_widget->update();
-}
-
-void MainWidget::keyup_event(GUI::KeyEvent& event)
-{
-    m_keys_pressed[event.key()] = false;
-
-    note_key_action(event.key(), Off);
-    m_keys_widget->update();
-}
-
-void MainWidget::note_key_action(int key_code, Switch switch_note)
-{
-    int key = m_keys_widget->key_code_to_key(key_code);
-    m_keys_widget->set_key(key, switch_note);
-}
-
-void MainWidget::special_key_action(int key_code)
-{
-    switch (key_code) {
-    case Key_Z:
-        set_octave_and_ensure_note_change(Down);
-        break;
-    case Key_X:
-        set_octave_and_ensure_note_change(Up);
-        break;
-    case Key_C:
-        m_track_manager.current_track().set_wave(Up);
-        m_knobs_widget->update_knobs();
-        break;
-    }
-}
-
-void MainWidget::turn_off_pressed_keys()
-{
-    m_keys_widget->set_key(m_keys_widget->mouse_note(), Off);
-    for (int i = 0; i < key_code_count; ++i) {
-        if (m_keys_pressed[i])
-            note_key_action(i, Off);
-    }
-}
-
-void MainWidget::turn_on_pressed_keys()
-{
-    m_keys_widget->set_key(m_keys_widget->mouse_note(), On);
-    for (int i = 0; i < key_code_count; ++i) {
-        if (m_keys_pressed[i])
-            note_key_action(i, On);
-    }
-}
-
-void MainWidget::set_octave_and_ensure_note_change(int octave)
-{
-    turn_off_pressed_keys();
-    m_track_manager.set_octave(octave);
-    turn_on_pressed_keys();
-
-    m_knobs_widget->update_knobs();
-    m_keys_widget->update();
-}
-
-void MainWidget::set_octave_and_ensure_note_change(Direction direction)
-{
-    turn_off_pressed_keys();
-    m_track_manager.set_octave(direction);
-    turn_on_pressed_keys();
-
-    m_knobs_widget->update_knobs();
-    m_keys_widget->update();
-}
diff --git a/Applications/Piano/MainWidget.h b/Applications/Piano/MainWidget.h
deleted file mode 100644
index a2a6a35a0c..0000000000
--- a/Applications/Piano/MainWidget.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Music.h"
-#include <LibGUI/Widget.h>
-
-class TrackManager;
-class WaveWidget;
-class RollWidget;
-class SamplerWidget;
-class KeysWidget;
-class KnobsWidget;
-
-class MainWidget final : public GUI::Widget {
-    C_OBJECT(MainWidget)
-public:
-    virtual ~MainWidget() override;
-
-    void add_actions(GUI::Menu&);
-
-    void set_octave_and_ensure_note_change(Direction);
-    void set_octave_and_ensure_note_change(int);
-
-private:
-    explicit MainWidget(TrackManager&);
-
-    virtual void keydown_event(GUI::KeyEvent&) override;
-    virtual void keyup_event(GUI::KeyEvent&) override;
-    virtual void custom_event(Core::CustomEvent&) override;
-
-    void note_key_action(int key_code, Switch);
-    void special_key_action(int key_code);
-
-    void turn_off_pressed_keys();
-    void turn_on_pressed_keys();
-
-    TrackManager& m_track_manager;
-
-    RefPtr<WaveWidget> m_wave_widget;
-    RefPtr<RollWidget> m_roll_widget;
-    RefPtr<SamplerWidget> m_sampler_widget;
-    RefPtr<GUI::TabWidget> m_tab_widget;
-    RefPtr<GUI::Widget> m_keys_and_knobs_container;
-    RefPtr<KeysWidget> m_keys_widget;
-    RefPtr<KnobsWidget> m_knobs_widget;
-
-    bool m_keys_pressed[key_code_count] { false };
-};
diff --git a/Applications/Piano/Music.h b/Applications/Piano/Music.h
deleted file mode 100644
index 3a150944ec..0000000000
--- a/Applications/Piano/Music.h
+++ /dev/null
@@ -1,329 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Types.h>
-#include <LibGfx/Color.h>
-
-namespace Music {
-
-// CD quality
-// - Stereo
-// - 16 bit
-// - 44,100 samples/sec
-// - 1,411.2 kbps
-
-struct Sample {
-    i16 left;
-    i16 right;
-};
-
-constexpr int sample_count = 1024;
-
-constexpr int buffer_size = sample_count * sizeof(Sample);
-
-constexpr double sample_rate = 44100;
-
-constexpr double volume = 1800;
-
-enum Switch {
-    Off,
-    On,
-};
-
-struct RollNote {
-    u32 length() const { return (off_sample - on_sample) + 1; }
-
-    u32 on_sample;
-    u32 off_sample;
-};
-
-enum Direction {
-    Down,
-    Up,
-};
-
-enum Wave {
-    Sine,
-    Triangle,
-    Square,
-    Saw,
-    Noise,
-    RecordedSample,
-};
-
-constexpr const char* wave_strings[] = {
-    "Sine",
-    "Triangle",
-    "Square",
-    "Saw",
-    "Noise",
-    "Sample",
-};
-
-constexpr int first_wave = Sine;
-constexpr int last_wave = RecordedSample;
-
-enum Envelope {
-    Done,
-    Attack,
-    Decay,
-    Release,
-};
-
-enum KeyColor {
-    White,
-    Black,
-};
-
-constexpr KeyColor key_pattern[] = {
-    White,
-    Black,
-    White,
-    Black,
-    White,
-    White,
-    Black,
-    White,
-    Black,
-    White,
-    Black,
-    White,
-};
-
-const Color note_pressed_color(64, 64, 255);
-const Color column_playing_color(128, 128, 255);
-
-const Color left_wave_colors[] = {
-    // Sine
-    {
-        255,
-        192,
-        0,
-    },
-    // Triangle
-    {
-        35,
-        171,
-        35,
-    },
-    // Square
-    {
-        128,
-        160,
-        255,
-    },
-    // Saw
-    {
-        240,
-        100,
-        128,
-    },
-    // Noise
-    {
-        197,
-        214,
-        225,
-    },
-    // RecordedSample
-    {
-        227,
-        39,
-        39,
-    },
-};
-
-const Color right_wave_colors[] = {
-    // Sine
-    {
-        255,
-        223,
-        0,
-    },
-    // Triangle
-    {
-        35,
-        171,
-        90,
-    },
-    // Square
-    {
-        139,
-        128,
-        255,
-    },
-    // Saw
-    {
-        240,
-        100,
-        220,
-    },
-    // Noise
-    {
-        197,
-        223,
-        225,
-    },
-    // RecordedSample
-    {
-        227,
-        105,
-        39,
-    },
-};
-
-constexpr int notes_per_octave = 12;
-constexpr int white_keys_per_octave = 7;
-constexpr int black_keys_per_octave = 5;
-constexpr int octave_min = 1;
-constexpr int octave_max = 7;
-
-constexpr double beats_per_minute = 60;
-constexpr int beats_per_bar = 4;
-constexpr int notes_per_beat = 4;
-constexpr int roll_length = (sample_rate / (beats_per_minute / 60)) * beats_per_bar;
-
-constexpr const char* note_names[] = {
-    "C",
-    "C#",
-    "D",
-    "D#",
-    "E",
-    "F",
-    "F#",
-    "G",
-    "G#",
-    "A",
-    "A#",
-    "B",
-};
-
-// Equal temperament, A = 440Hz
-// We calculate note frequencies relative to A4:
-// 440.0 * pow(pow(2.0, 1.0 / 12.0), N)
-// Where N is the note distance from A.
-constexpr double note_frequencies[] = {
-    // Octave 1
-    32.703195662574764,
-    34.647828872108946,
-    36.708095989675876,
-    38.890872965260044,
-    41.203444614108669,
-    43.653528929125407,
-    46.249302838954222,
-    48.99942949771858,
-    51.913087197493056,
-    54.999999999999915,
-    58.270470189761156,
-    61.735412657015416,
-    // Octave 2
-    65.406391325149571,
-    69.295657744217934,
-    73.416191979351794,
-    77.781745930520117,
-    82.406889228217381,
-    87.307057858250872,
-    92.4986056779085,
-    97.998858995437217,
-    103.82617439498618,
-    109.99999999999989,
-    116.54094037952237,
-    123.4708253140309,
-    // Octave 3
-    130.8127826502992,
-    138.59131548843592,
-    146.83238395870364,
-    155.56349186104035,
-    164.81377845643485,
-    174.61411571650183,
-    184.99721135581709,
-    195.99771799087452,
-    207.65234878997245,
-    219.99999999999989,
-    233.08188075904488,
-    246.94165062806198,
-    // Octave 4
-    261.62556530059851,
-    277.18263097687202,
-    293.66476791740746,
-    311.12698372208081,
-    329.62755691286986,
-    349.22823143300383,
-    369.99442271163434,
-    391.99543598174927,
-    415.30469757994513,
-    440,
-    466.16376151808993,
-    493.88330125612413,
-    // Octave 5
-    523.25113060119736,
-    554.36526195374427,
-    587.32953583481526,
-    622.25396744416196,
-    659.25511382574007,
-    698.456462866008,
-    739.98884542326903,
-    783.99087196349899,
-    830.60939515989071,
-    880.00000000000034,
-    932.32752303618031,
-    987.76660251224882,
-    // Octave 6
-    1046.5022612023952,
-    1108.7305239074892,
-    1174.659071669631,
-    1244.5079348883246,
-    1318.5102276514808,
-    1396.9129257320169,
-    1479.977690846539,
-    1567.9817439269987,
-    1661.2187903197821,
-    1760.000000000002,
-    1864.6550460723618,
-    1975.5332050244986,
-    // Octave 7
-    2093.0045224047913,
-    2217.4610478149793,
-    2349.3181433392633,
-    2489.0158697766506,
-    2637.020455302963,
-    2793.8258514640347,
-    2959.9553816930793,
-    3135.9634878539991,
-    3322.437580639566,
-    3520.0000000000055,
-    3729.3100921447249,
-    3951.0664100489994,
-};
-constexpr int note_count = sizeof(note_frequencies) / sizeof(double);
-
-constexpr double middle_c = note_frequencies[36];
-
-}
-
-using namespace Music;
diff --git a/Applications/Piano/RollWidget.cpp b/Applications/Piano/RollWidget.cpp
deleted file mode 100644
index 2677fed384..0000000000
--- a/Applications/Piano/RollWidget.cpp
+++ /dev/null
@@ -1,248 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "RollWidget.h"
-#include "TrackManager.h"
-#include <LibGUI/Painter.h>
-#include <LibGUI/ScrollBar.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/FontDatabase.h>
-#include <math.h>
-
-constexpr int note_height = 20;
-constexpr int max_note_width = note_height * 2;
-constexpr int roll_height = note_count * note_height;
-constexpr int horizontal_scroll_sensitivity = 20;
-constexpr int max_zoom = 1 << 8;
-
-RollWidget::RollWidget(TrackManager& track_manager)
-    : m_track_manager(track_manager)
-{
-    set_should_hide_unnecessary_scrollbars(true);
-    set_content_size({ 0, roll_height });
-    vertical_scrollbar().set_value(roll_height / 2);
-}
-
-RollWidget::~RollWidget()
-{
-}
-
-void RollWidget::paint_event(GUI::PaintEvent& event)
-{
-    m_roll_width = widget_inner_rect().width() * m_zoom_level;
-    set_content_size({ m_roll_width, roll_height });
-
-    // Divide the roll by the maximum note width. If we get fewer notes than
-    // our time signature requires, round up. Otherwise, round down to the
-    // nearest x*(2^y), where x is the base number of notes of our time
-    // signature. In other words, find a number that is a double of our time
-    // signature. For 4/4 that would be 16, 32, 64, 128 ...
-    m_num_notes = m_roll_width / max_note_width;
-    int time_signature_notes = beats_per_bar * notes_per_beat;
-    if (m_num_notes < time_signature_notes)
-        m_num_notes = time_signature_notes;
-    else
-        m_num_notes = time_signature_notes * pow(2, static_cast<int>(log2(m_num_notes / time_signature_notes)));
-    m_note_width = static_cast<double>(m_roll_width) / m_num_notes;
-
-    // This calculates the minimum number of rows needed. We account for a
-    // partial row at the top and/or bottom.
-    int y_offset = vertical_scrollbar().value();
-    int note_offset = y_offset / note_height;
-    int note_offset_remainder = y_offset % note_height;
-    int paint_area = widget_inner_rect().height() + note_offset_remainder;
-    if (paint_area % note_height != 0)
-        paint_area += note_height;
-    int notes_to_paint = paint_area / note_height;
-    int key_pattern_index = (notes_per_octave - 1) - (note_offset % notes_per_octave);
-
-    int x_offset = horizontal_scrollbar().value();
-    int horizontal_note_offset_remainder = fmod(x_offset, m_note_width);
-    int horizontal_paint_area = widget_inner_rect().width() + horizontal_note_offset_remainder;
-    if (fmod(horizontal_paint_area, m_note_width) != 0)
-        horizontal_paint_area += m_note_width;
-    int horizontal_notes_to_paint = horizontal_paint_area / m_note_width;
-
-    GUI::Painter painter(*this);
-    painter.translate(frame_thickness(), frame_thickness());
-    painter.add_clip_rect(event.rect());
-    painter.translate(-horizontal_note_offset_remainder, -note_offset_remainder);
-
-    for (int y = 0; y < notes_to_paint; ++y) {
-        int y_pos = y * note_height;
-
-        int note = (note_count - note_offset - 1) - y;
-        for (int x = 0; x < horizontal_notes_to_paint; ++x) {
-            // This is needed to avoid rounding errors. You can't just use
-            // m_note_width as the width.
-            int x_pos = x * m_note_width;
-            int next_x_pos = (x + 1) * m_note_width;
-            int distance_to_next_x = next_x_pos - x_pos;
-            Gfx::IntRect rect(x_pos, y_pos, distance_to_next_x, note_height);
-
-            if (key_pattern[key_pattern_index] == Black)
-                painter.fill_rect(rect, Color::LightGray);
-            else
-                painter.fill_rect(rect, Color::White);
-
-            if (keys_widget() && keys_widget()->note_is_set(note))
-                painter.fill_rect(rect, note_pressed_color.with_alpha(128));
-
-            painter.draw_line(rect.top_right(), rect.bottom_right(), Color::Black);
-            painter.draw_line(rect.bottom_left(), rect.bottom_right(), Color::Black);
-        }
-
-        if (--key_pattern_index == -1)
-            key_pattern_index = notes_per_octave - 1;
-    }
-
-    painter.translate(-x_offset, -y_offset);
-    painter.translate(horizontal_note_offset_remainder, note_offset_remainder);
-
-    for (int note = note_count - (note_offset + notes_to_paint); note <= (note_count - 1) - note_offset; ++note) {
-        int y = ((note_count - 1) - note) * note_height;
-        for (auto roll_note : m_track_manager.current_track().roll_notes(note)) {
-            int x = m_roll_width * (static_cast<double>(roll_note.on_sample) / roll_length);
-            int width = m_roll_width * (static_cast<double>(roll_note.length()) / roll_length);
-            if (x + width < x_offset || x > x_offset + widget_inner_rect().width())
-                continue;
-            if (width < 2)
-                width = 2;
-
-            int height = note_height;
-
-            Gfx::IntRect rect(x, y, width, height);
-            painter.fill_rect(rect, note_pressed_color);
-            painter.draw_rect(rect, Color::Black);
-        }
-        Gfx::IntRect note_name_rect(3, y, 1, note_height);
-        const char* note_name = note_names[note % notes_per_octave];
-
-        painter.draw_text(note_name_rect, note_name, Gfx::TextAlignment::CenterLeft);
-        note_name_rect.move_by(Gfx::FontDatabase::default_font().width(note_name) + 2, 0);
-        if (note % notes_per_octave == 0)
-            painter.draw_text(note_name_rect, String::formatted("{}", note / notes_per_octave + 1), Gfx::TextAlignment::CenterLeft);
-    }
-
-    int x = m_roll_width * (static_cast<double>(m_track_manager.time()) / roll_length);
-    if (x > x_offset && x <= x_offset + widget_inner_rect().width())
-        painter.draw_line({ x, 0 }, { x, roll_height }, Gfx::Color::Black);
-
-    GUI::Frame::paint_event(event);
-}
-
-void RollWidget::mousedown_event(GUI::MouseEvent& event)
-{
-    if (!widget_inner_rect().contains(event.x(), event.y()))
-        return;
-
-    m_note_drag_start = event.position();
-
-    int y = (m_note_drag_start.value().y() + vertical_scrollbar().value()) - frame_thickness();
-    y /= note_height;
-    m_drag_note = (note_count - 1) - y;
-
-    mousemove_event(event);
-}
-
-void RollWidget::mousemove_event(GUI::MouseEvent& event)
-{
-    if (!m_note_drag_start.has_value())
-        return;
-
-    if (m_note_drag_location.has_value()) {
-        // Clear previous note
-        m_track_manager.current_track().set_roll_note(m_drag_note, m_note_drag_location.value().on_sample, m_note_drag_location.value().off_sample);
-    }
-
-    auto get_note_x = [&](int x0) {
-        // There's a case where we can't just use x / m_note_width. For example, if
-        // your m_note_width is 3.1 you will have a rect starting at 3. When that
-        // leftmost pixel of the rect is clicked you will do 3 / 3.1 which is 0
-        // and not 1. We can avoid that case by shifting x by 1 if m_note_width is
-        // fractional, being careful not to shift out of bounds.
-        int x = (x0 + horizontal_scrollbar().value()) - frame_thickness();
-        bool note_width_is_fractional = m_note_width - static_cast<int>(m_note_width) != 0;
-        bool x_is_not_last = x != widget_inner_rect().width() - 1;
-        if (note_width_is_fractional && x_is_not_last)
-            ++x;
-        x /= m_note_width;
-        return x;
-    };
-
-    int x0 = get_note_x(m_note_drag_start.value().x());
-    int x1 = get_note_x(event.x());
-
-    u32 on_sample = roll_length * (static_cast<double>(min(x0, x1)) / m_num_notes);
-    u32 off_sample = (roll_length * (static_cast<double>(max(x0, x1) + 1) / m_num_notes)) - 1;
-    m_track_manager.current_track().set_roll_note(m_drag_note, on_sample, off_sample);
-    m_note_drag_location = RollNote({ on_sample, off_sample });
-
-    update();
-}
-
-void RollWidget::mouseup_event([[maybe_unused]] GUI::MouseEvent& event)
-{
-    m_note_drag_start = {};
-    m_note_drag_location = {};
-}
-
-// FIXME: Implement zoom and horizontal scroll events in LibGUI, not here.
-void RollWidget::mousewheel_event(GUI::MouseEvent& event)
-{
-    if (event.modifiers() & KeyModifier::Mod_Shift) {
-        horizontal_scrollbar().set_value(horizontal_scrollbar().value() + (event.wheel_delta() * horizontal_scroll_sensitivity));
-        return;
-    }
-
-    if (!(event.modifiers() & KeyModifier::Mod_Ctrl)) {
-        GUI::ScrollableWidget::mousewheel_event(event);
-        return;
-    }
-
-    double multiplier = event.wheel_delta() >= 0 ? 0.5 : 2;
-
-    if (m_zoom_level * multiplier > max_zoom)
-        return;
-
-    if (m_zoom_level * multiplier < 1) {
-        if (m_zoom_level == 1)
-            return;
-        m_zoom_level = 1;
-    } else {
-        m_zoom_level *= multiplier;
-    }
-
-    int absolute_x_of_pixel_at_cursor = horizontal_scrollbar().value() + event.position().x();
-    int absolute_x_of_pixel_at_cursor_after_resize = absolute_x_of_pixel_at_cursor * multiplier;
-    int new_scrollbar = absolute_x_of_pixel_at_cursor_after_resize - event.position().x();
-
-    m_roll_width = widget_inner_rect().width() * m_zoom_level;
-    set_content_size({ m_roll_width, roll_height });
-
-    horizontal_scrollbar().set_value(new_scrollbar);
-}
diff --git a/Applications/Piano/RollWidget.h b/Applications/Piano/RollWidget.h
deleted file mode 100644
index bbfcc8bb62..0000000000
--- a/Applications/Piano/RollWidget.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "KeysWidget.h"
-#include "Music.h"
-#include <LibGUI/ScrollableWidget.h>
-
-class TrackManager;
-
-class RollWidget final : public GUI::ScrollableWidget {
-    C_OBJECT(RollWidget)
-public:
-    virtual ~RollWidget() override;
-
-    const KeysWidget* keys_widget() const { return m_keys_widget; }
-    void set_keys_widget(const KeysWidget* widget) { m_keys_widget = widget; }
-
-private:
-    explicit RollWidget(TrackManager&);
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void mousedown_event(GUI::MouseEvent& event) override;
-    virtual void mousemove_event(GUI::MouseEvent& event) override;
-    virtual void mouseup_event(GUI::MouseEvent& event) override;
-    virtual void mousewheel_event(GUI::MouseEvent&) override;
-
-    TrackManager& m_track_manager;
-    const KeysWidget* m_keys_widget;
-
-    int m_roll_width { 0 };
-    int m_num_notes { 0 };
-    double m_note_width { 0.0 };
-    int m_zoom_level { 1 };
-
-    Optional<Gfx::IntPoint> m_note_drag_start;
-    Optional<RollNote> m_note_drag_location;
-    int m_drag_note;
-};
diff --git a/Applications/Piano/SamplerWidget.cpp b/Applications/Piano/SamplerWidget.cpp
deleted file mode 100644
index 72704f28c7..0000000000
--- a/Applications/Piano/SamplerWidget.cpp
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * Copyright (c) 2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "SamplerWidget.h"
-#include "TrackManager.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/Painter.h>
-
-WaveEditor::WaveEditor(TrackManager& track_manager)
-    : m_track_manager(track_manager)
-{
-}
-
-WaveEditor::~WaveEditor()
-{
-}
-
-int WaveEditor::sample_to_y(double percentage) const
-{
-    double portion_of_half_height = percentage * ((frame_inner_rect().height() - 1) / 2.0);
-    double y = (frame_inner_rect().height() / 2.0) + portion_of_half_height;
-    return y;
-}
-
-void WaveEditor::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-
-    GUI::Painter painter(*this);
-    painter.fill_rect(frame_inner_rect(), Color::Black);
-
-    auto recorded_sample = m_track_manager.current_track().recorded_sample();
-    if (recorded_sample.is_empty())
-        return;
-
-    double width_scale = static_cast<double>(frame_inner_rect().width()) / recorded_sample.size();
-
-    painter.translate(frame_thickness(), frame_thickness());
-
-    int prev_x = 0;
-    int left_prev_y = sample_to_y(recorded_sample[0].left);
-    int right_prev_y = sample_to_y(recorded_sample[0].right);
-    painter.set_pixel({ prev_x, left_prev_y }, left_wave_colors[RecordedSample]);
-    painter.set_pixel({ prev_x, right_prev_y }, right_wave_colors[RecordedSample]);
-
-    for (size_t x = 1; x < recorded_sample.size(); ++x) {
-        int left_y = sample_to_y(recorded_sample[x].left);
-        int right_y = sample_to_y(recorded_sample[x].right);
-
-        Gfx::IntPoint left_point1(prev_x * width_scale, left_prev_y);
-        Gfx::IntPoint left_point2(x * width_scale, left_y);
-        painter.draw_line(left_point1, left_point2, left_wave_colors[RecordedSample]);
-
-        Gfx::IntPoint right_point1(prev_x * width_scale, right_prev_y);
-        Gfx::IntPoint right_point2(x * width_scale, right_y);
-        painter.draw_line(right_point1, right_point2, right_wave_colors[RecordedSample]);
-
-        prev_x = x;
-        left_prev_y = left_y;
-        right_prev_y = right_y;
-    }
-}
-
-SamplerWidget::SamplerWidget(TrackManager& track_manager)
-    : m_track_manager(track_manager)
-{
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins({ 10, 10, 10, 10 });
-    layout()->set_spacing(10);
-    set_fill_with_background_color(true);
-
-    m_open_button_and_recorded_sample_name_container = add<GUI::Widget>();
-    m_open_button_and_recorded_sample_name_container->set_layout<GUI::HorizontalBoxLayout>();
-    m_open_button_and_recorded_sample_name_container->layout()->set_spacing(10);
-    m_open_button_and_recorded_sample_name_container->set_fixed_height(24);
-
-    m_open_button = m_open_button_and_recorded_sample_name_container->add<GUI::Button>();
-    m_open_button->set_fixed_size(24, 24);
-    m_open_button->set_focus_policy(GUI::FocusPolicy::TabFocus);
-    m_open_button->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/open.png"));
-    m_open_button->on_click = [this](auto) {
-        Optional<String> open_path = GUI::FilePicker::get_open_filepath(window());
-        if (!open_path.has_value())
-            return;
-        String error_string = m_track_manager.current_track().set_recorded_sample(open_path.value());
-        if (!error_string.is_empty()) {
-            GUI::MessageBox::show(window(), String::formatted("Failed to load WAV file: {}", error_string.characters()), "Error", GUI::MessageBox::Type::Error);
-            return;
-        }
-        m_recorded_sample_name->set_text(open_path.value());
-        m_wave_editor->update();
-    };
-
-    m_recorded_sample_name = m_open_button_and_recorded_sample_name_container->add<GUI::Label>("No sample loaded");
-    m_recorded_sample_name->set_text_alignment(Gfx::TextAlignment::CenterLeft);
-
-    m_wave_editor = add<WaveEditor>(m_track_manager);
-    m_wave_editor->set_fixed_height(100);
-}
-
-SamplerWidget::~SamplerWidget()
-{
-}
diff --git a/Applications/Piano/SamplerWidget.h b/Applications/Piano/SamplerWidget.h
deleted file mode 100644
index b99dbcbe02..0000000000
--- a/Applications/Piano/SamplerWidget.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Frame.h>
-
-class TrackManager;
-
-class WaveEditor final : public GUI::Frame {
-    C_OBJECT(WaveEditor)
-public:
-    virtual ~WaveEditor() override;
-
-private:
-    explicit WaveEditor(TrackManager&);
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-
-    int sample_to_y(double percentage) const;
-
-    TrackManager& m_track_manager;
-};
-
-class SamplerWidget final : public GUI::Frame {
-    C_OBJECT(SamplerWidget)
-public:
-    virtual ~SamplerWidget() override;
-
-private:
-    explicit SamplerWidget(TrackManager&);
-
-    TrackManager& m_track_manager;
-
-    RefPtr<GUI::Widget> m_open_button_and_recorded_sample_name_container;
-    RefPtr<GUI::Button> m_open_button;
-    RefPtr<GUI::Label> m_recorded_sample_name;
-    RefPtr<WaveEditor> m_wave_editor;
-};
diff --git a/Applications/Piano/Track.cpp b/Applications/Piano/Track.cpp
deleted file mode 100644
index 61d4351d06..0000000000
--- a/Applications/Piano/Track.cpp
+++ /dev/null
@@ -1,369 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Track.h"
-#include <AK/NumericLimits.h>
-#include <LibAudio/Loader.h>
-#include <math.h>
-
-Track::Track(const u32& time)
-    : m_time(time)
-{
-    set_sustain_impl(1000);
-    set_attack(5);
-    set_decay(1000);
-    set_release(5);
-}
-
-Track::~Track()
-{
-}
-
-void Track::fill_sample(Sample& sample)
-{
-    Audio::Sample new_sample;
-
-    for (size_t note = 0; note < note_count; ++note) {
-        if (!m_roll_iters[note].is_end()) {
-            if (m_roll_iters[note]->on_sample == m_time) {
-                set_note(note, On);
-            } else if (m_roll_iters[note]->off_sample == m_time) {
-                set_note(note, Off);
-                ++m_roll_iters[note];
-                if (m_roll_iters[note].is_end())
-                    m_roll_iters[note] = m_roll_notes[note].begin();
-            }
-        }
-
-        switch (m_envelope[note]) {
-        case Done:
-            continue;
-        case Attack:
-            m_power[note] += m_attack_step;
-            if (m_power[note] >= 1) {
-                m_power[note] = 1;
-                m_envelope[note] = Decay;
-            }
-            break;
-        case Decay:
-            m_power[note] -= m_decay_step;
-            if (m_power[note] < m_sustain_level)
-                m_power[note] = m_sustain_level;
-            break;
-        case Release:
-            m_power[note] -= m_release_step[note];
-            if (m_power[note] <= 0) {
-                m_power[note] = 0;
-                m_envelope[note] = Done;
-                continue;
-            }
-            break;
-        default:
-            ASSERT_NOT_REACHED();
-        }
-
-        Audio::Sample note_sample;
-        switch (m_wave) {
-        case Wave::Sine:
-            note_sample = sine(note);
-            break;
-        case Wave::Saw:
-            note_sample = saw(note);
-            break;
-        case Wave::Square:
-            note_sample = square(note);
-            break;
-        case Wave::Triangle:
-            note_sample = triangle(note);
-            break;
-        case Wave::Noise:
-            note_sample = noise();
-            break;
-        case Wave::RecordedSample:
-            note_sample = recorded_sample(note);
-            break;
-        default:
-            ASSERT_NOT_REACHED();
-        }
-        new_sample.left += note_sample.left * m_power[note] * volume;
-        new_sample.right += note_sample.right * m_power[note] * volume;
-    }
-
-    if (m_delay) {
-        new_sample.left += m_delay_buffer[m_delay_index].left * 0.333333;
-        new_sample.right += m_delay_buffer[m_delay_index].right * 0.333333;
-        m_delay_buffer[m_delay_index].left = new_sample.left;
-        m_delay_buffer[m_delay_index].right = new_sample.right;
-        if (++m_delay_index >= m_delay_samples)
-            m_delay_index = 0;
-    }
-
-    sample.left += new_sample.left;
-    sample.right += new_sample.right;
-}
-
-void Track::reset()
-{
-    memset(m_delay_buffer.data(), 0, m_delay_buffer.size() * sizeof(Sample));
-    m_delay_index = 0;
-
-    memset(m_note_on, 0, sizeof(m_note_on));
-    memset(m_power, 0, sizeof(m_power));
-    memset(m_envelope, 0, sizeof(m_envelope));
-}
-
-String Track::set_recorded_sample(const StringView& path)
-{
-    NonnullRefPtr<Audio::Loader> loader = Audio::Loader::create(path);
-    if (loader->has_error())
-        return String(loader->error_string());
-    auto buffer = loader->get_more_samples(60 * sample_rate * sizeof(Sample)); // 1 minute maximum
-
-    if (!m_recorded_sample.is_empty())
-        m_recorded_sample.clear();
-    m_recorded_sample.resize(buffer->sample_count());
-
-    double peak = 0;
-    for (int i = 0; i < buffer->sample_count(); ++i) {
-        double left_abs = fabs(buffer->samples()[i].left);
-        double right_abs = fabs(buffer->samples()[i].right);
-        if (left_abs > peak)
-            peak = left_abs;
-        if (right_abs > peak)
-            peak = right_abs;
-    }
-
-    if (peak) {
-        for (int i = 0; i < buffer->sample_count(); ++i) {
-            m_recorded_sample[i].left = buffer->samples()[i].left / peak;
-            m_recorded_sample[i].right = buffer->samples()[i].right / peak;
-        }
-    }
-
-    return String::empty();
-}
-
-// All of the information for these waves is on Wikipedia.
-
-Audio::Sample Track::sine(size_t note)
-{
-    double pos = note_frequencies[note] / sample_rate;
-    double sin_step = pos * 2 * M_PI;
-    double w = sin(m_pos[note]);
-    m_pos[note] += sin_step;
-    return w;
-}
-
-Audio::Sample Track::saw(size_t note)
-{
-    double saw_step = note_frequencies[note] / sample_rate;
-    double t = m_pos[note];
-    double w = (0.5 - (t - floor(t))) * 2;
-    m_pos[note] += saw_step;
-    return w;
-}
-
-Audio::Sample Track::square(size_t note)
-{
-    double pos = note_frequencies[note] / sample_rate;
-    double square_step = pos * 2 * M_PI;
-    double w = sin(m_pos[note]) >= 0 ? 1 : -1;
-    m_pos[note] += square_step;
-    return w;
-}
-
-Audio::Sample Track::triangle(size_t note)
-{
-    double triangle_step = note_frequencies[note] / sample_rate;
-    double t = m_pos[note];
-    double w = fabs(fmod((4 * t) + 1, 4) - 2) - 1;
-    m_pos[note] += triangle_step;
-    return w;
-}
-
-Audio::Sample Track::noise() const
-{
-    double random_percentage = static_cast<double>(rand()) / RAND_MAX;
-    double w = (random_percentage * 2) - 1;
-    return w;
-}
-
-Audio::Sample Track::recorded_sample(size_t note)
-{
-    int t = m_pos[note];
-    if (t >= static_cast<int>(m_recorded_sample.size()))
-        return 0;
-    double w_left = m_recorded_sample[t].left;
-    double w_right = m_recorded_sample[t].right;
-    if (t + 1 < static_cast<int>(m_recorded_sample.size())) {
-        double t_fraction = m_pos[note] - t;
-        w_left += (m_recorded_sample[t + 1].left - m_recorded_sample[t].left) * t_fraction;
-        w_right += (m_recorded_sample[t + 1].right - m_recorded_sample[t].right) * t_fraction;
-    }
-    double recorded_sample_step = note_frequencies[note] / middle_c;
-    m_pos[note] += recorded_sample_step;
-    return { w_left, w_right };
-}
-
-static inline double calculate_step(double distance, int milliseconds)
-{
-    if (milliseconds == 0)
-        return distance;
-
-    constexpr double samples_per_millisecond = sample_rate / 1000.0;
-    double samples = milliseconds * samples_per_millisecond;
-    double step = distance / samples;
-    return step;
-}
-
-void Track::set_note(int note, Switch switch_note)
-{
-    ASSERT(note >= 0 && note < note_count);
-
-    if (switch_note == On) {
-        if (m_note_on[note] == 0) {
-            m_pos[note] = 0;
-            m_envelope[note] = Attack;
-        }
-        ++m_note_on[note];
-    } else {
-        if (m_note_on[note] >= 1) {
-            if (m_note_on[note] == 1) {
-                m_release_step[note] = calculate_step(m_power[note], m_release);
-                m_envelope[note] = Release;
-            }
-            --m_note_on[note];
-        }
-    }
-
-    ASSERT(m_note_on[note] != NumericLimits<u8>::max());
-    ASSERT(m_power[note] >= 0);
-}
-
-void Track::sync_roll(int note)
-{
-    auto it = m_roll_notes[note].find_if([&](auto& roll_note) { return roll_note.off_sample > m_time; });
-    if (it.is_end())
-        m_roll_iters[note] = m_roll_notes[note].begin();
-    else
-        m_roll_iters[note] = it;
-}
-
-void Track::set_roll_note(int note, u32 on_sample, u32 off_sample)
-{
-    RollNote new_roll_note = { on_sample, off_sample };
-
-    ASSERT(note >= 0 && note < note_count);
-    ASSERT(new_roll_note.off_sample < roll_length);
-    ASSERT(new_roll_note.length() >= 2);
-
-    for (auto it = m_roll_notes[note].begin(); !it.is_end();) {
-        if (it->on_sample > new_roll_note.off_sample) {
-            m_roll_notes[note].insert_before(it, new_roll_note);
-            sync_roll(note);
-            return;
-        }
-        if (it->on_sample <= new_roll_note.on_sample && it->off_sample >= new_roll_note.on_sample) {
-            if (m_time >= it->on_sample && m_time <= it->off_sample)
-                set_note(note, Off);
-            m_roll_notes[note].remove(it);
-            sync_roll(note);
-            return;
-        }
-        if ((new_roll_note.on_sample == 0 || it->on_sample >= new_roll_note.on_sample - 1) && it->on_sample <= new_roll_note.off_sample) {
-            if (m_time >= new_roll_note.off_sample && m_time <= it->off_sample)
-                set_note(note, Off);
-            m_roll_notes[note].remove(it);
-            it = m_roll_notes[note].begin();
-            continue;
-        }
-        ++it;
-    }
-
-    m_roll_notes[note].append(new_roll_note);
-    sync_roll(note);
-}
-
-void Track::set_wave(int wave)
-{
-    ASSERT(wave >= first_wave && wave <= last_wave);
-    m_wave = wave;
-}
-
-void Track::set_wave(Direction direction)
-{
-    if (direction == Up) {
-        if (++m_wave > last_wave)
-            m_wave = first_wave;
-    } else {
-        if (--m_wave < first_wave)
-            m_wave = last_wave;
-    }
-}
-
-void Track::set_attack(int attack)
-{
-    ASSERT(attack >= 0);
-    m_attack = attack;
-    m_attack_step = calculate_step(1, m_attack);
-}
-
-void Track::set_decay(int decay)
-{
-    ASSERT(decay >= 0);
-    m_decay = decay;
-    m_decay_step = calculate_step(1 - m_sustain_level, m_decay);
-}
-
-void Track::set_sustain_impl(int sustain)
-{
-    ASSERT(sustain >= 0);
-    m_sustain = sustain;
-    m_sustain_level = sustain / 1000.0;
-}
-
-void Track::set_sustain(int sustain)
-{
-    set_sustain_impl(sustain);
-    set_decay(m_decay);
-}
-
-void Track::set_release(int release)
-{
-    ASSERT(release >= 0);
-    m_release = release;
-}
-
-void Track::set_delay(int delay)
-{
-    ASSERT(delay >= 0);
-    m_delay = delay;
-    m_delay_samples = m_delay == 0 ? 0 : (sample_rate / (beats_per_minute / 60)) / m_delay;
-    m_delay_buffer.resize(m_delay_samples);
-    memset(m_delay_buffer.data(), 0, m_delay_buffer.size() * sizeof(Sample));
-    m_delay_index = 0;
-}
diff --git a/Applications/Piano/Track.h b/Applications/Piano/Track.h
deleted file mode 100644
index 0acca429b0..0000000000
--- a/Applications/Piano/Track.h
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Music.h"
-#include <AK/Noncopyable.h>
-#include <AK/SinglyLinkedList.h>
-#include <LibAudio/Buffer.h>
-
-typedef AK::SinglyLinkedListIterator<SinglyLinkedList<RollNote>, RollNote> RollIter;
-
-class Track {
-    AK_MAKE_NONCOPYABLE(Track);
-    AK_MAKE_NONMOVABLE(Track);
-
-public:
-    explicit Track(const u32& time);
-    ~Track();
-
-    const Vector<Audio::Sample>& recorded_sample() const { return m_recorded_sample; }
-    const SinglyLinkedList<RollNote>& roll_notes(int note) const { return m_roll_notes[note]; }
-    int wave() const { return m_wave; }
-    int attack() const { return m_attack; }
-    int decay() const { return m_decay; }
-    int sustain() const { return m_sustain; }
-    int release() const { return m_release; }
-    int delay() const { return m_delay; }
-
-    void fill_sample(Sample& sample);
-    void reset();
-    String set_recorded_sample(const StringView& path);
-    void set_note(int note, Switch);
-    void set_roll_note(int note, u32 on_sample, u32 off_sample);
-    void set_wave(int wave);
-    void set_wave(Direction);
-    void set_attack(int attack);
-    void set_decay(int decay);
-    void set_sustain(int sustain);
-    void set_release(int release);
-    void set_delay(int delay);
-
-private:
-    Audio::Sample sine(size_t note);
-    Audio::Sample saw(size_t note);
-    Audio::Sample square(size_t note);
-    Audio::Sample triangle(size_t note);
-    Audio::Sample noise() const;
-    Audio::Sample recorded_sample(size_t note);
-
-    void sync_roll(int note);
-    void set_sustain_impl(int sustain);
-
-    Vector<Sample> m_delay_buffer;
-
-    Vector<Audio::Sample> m_recorded_sample;
-
-    u8 m_note_on[note_count] { 0 };
-    double m_power[note_count] { 0 };
-    double m_pos[note_count]; // Initialized lazily.
-    Envelope m_envelope[note_count] { Done };
-
-    int m_wave { first_wave };
-    int m_attack;
-    double m_attack_step;
-    int m_decay;
-    double m_decay_step;
-    int m_sustain;
-    double m_sustain_level;
-    int m_release;
-    double m_release_step[note_count];
-    int m_delay { 0 };
-    size_t m_delay_samples { 0 };
-    size_t m_delay_index { 0 };
-
-    const u32& m_time;
-
-    SinglyLinkedList<RollNote> m_roll_notes[note_count];
-    RollIter m_roll_iters[note_count];
-};
diff --git a/Applications/Piano/TrackManager.cpp b/Applications/Piano/TrackManager.cpp
deleted file mode 100644
index 5aa1856a11..0000000000
--- a/Applications/Piano/TrackManager.cpp
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "TrackManager.h"
-
-TrackManager::TrackManager()
-{
-    add_track();
-}
-
-TrackManager::~TrackManager()
-{
-}
-
-void TrackManager::fill_buffer(Span<Sample> buffer)
-{
-    memset(buffer.data(), 0, buffer_size);
-
-    for (size_t i = 0; i < buffer.size(); ++i) {
-        for (auto& track : m_tracks)
-            track->fill_sample(buffer[i]);
-
-        if (++m_time >= roll_length) {
-            m_time = 0;
-            if (!m_should_loop)
-                break;
-        }
-    }
-
-    memcpy(m_current_back_buffer.data(), buffer.data(), buffer_size);
-    swap(m_current_front_buffer, m_current_back_buffer);
-}
-
-void TrackManager::reset()
-{
-    memset(m_front_buffer.data(), 0, buffer_size);
-    memset(m_back_buffer.data(), 0, buffer_size);
-
-    m_current_front_buffer = m_front_buffer.span();
-    m_current_back_buffer = m_back_buffer.span();
-
-    m_time = 0;
-
-    for (auto& track : m_tracks)
-        track->reset();
-}
-
-void TrackManager::set_note_current_octave(int note, Switch switch_note)
-{
-    current_track().set_note(note + octave_base(), switch_note);
-}
-
-void TrackManager::set_octave(Direction direction)
-{
-    if (direction == Up) {
-        if (m_octave < octave_max)
-            ++m_octave;
-    } else {
-        if (m_octave > octave_min)
-            --m_octave;
-    }
-}
-
-void TrackManager::set_octave(int octave)
-{
-    if (octave <= octave_max && octave >= octave_min) {
-        m_octave = octave;
-    }
-}
-
-void TrackManager::add_track()
-{
-    m_tracks.append(make<Track>(m_time));
-}
-
-void TrackManager::next_track()
-{
-    if (++m_current_track >= m_tracks.size())
-        m_current_track = 0;
-}
diff --git a/Applications/Piano/TrackManager.h b/Applications/Piano/TrackManager.h
deleted file mode 100644
index 70cb661bc4..0000000000
--- a/Applications/Piano/TrackManager.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Music.h"
-#include "Track.h"
-#include <AK/Array.h>
-#include <AK/Noncopyable.h>
-#include <AK/NonnullOwnPtr.h>
-#include <AK/Vector.h>
-
-class TrackManager {
-    AK_MAKE_NONCOPYABLE(TrackManager);
-    AK_MAKE_NONMOVABLE(TrackManager);
-
-public:
-    TrackManager();
-    ~TrackManager();
-
-    Track& current_track() { return *m_tracks[m_current_track]; }
-    Span<const Sample> buffer() const { return m_current_front_buffer; }
-    int octave() const { return m_octave; }
-    int octave_base() const { return (m_octave - octave_min) * 12; }
-    int time() const { return m_time; }
-
-    void fill_buffer(Span<Sample>);
-    void reset();
-    void set_should_loop(bool b) { m_should_loop = b; }
-    void set_note_current_octave(int note, Switch);
-    void set_octave(Direction);
-    void set_octave(int octave);
-    void add_track();
-    void next_track();
-
-private:
-    Vector<NonnullOwnPtr<Track>> m_tracks;
-    size_t m_current_track { 0 };
-
-    Array<Sample, sample_count> m_front_buffer;
-    Array<Sample, sample_count> m_back_buffer;
-    Span<Sample> m_current_front_buffer { m_front_buffer.span() };
-    Span<Sample> m_current_back_buffer { m_back_buffer.span() };
-
-    int m_octave { 4 };
-
-    u32 m_time { 0 };
-
-    bool m_should_loop { true };
-};
diff --git a/Applications/Piano/WaveWidget.cpp b/Applications/Piano/WaveWidget.cpp
deleted file mode 100644
index 9c40b46bde..0000000000
--- a/Applications/Piano/WaveWidget.cpp
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "WaveWidget.h"
-#include "TrackManager.h"
-#include <AK/NumericLimits.h>
-#include <LibGUI/Painter.h>
-
-WaveWidget::WaveWidget(TrackManager& track_manager)
-    : m_track_manager(track_manager)
-{
-}
-
-WaveWidget::~WaveWidget()
-{
-}
-
-int WaveWidget::sample_to_y(int sample) const
-{
-    constexpr int nice_scale_factor = 4;
-    sample *= nice_scale_factor;
-    constexpr double sample_max = NumericLimits<i16>::max();
-    double percentage = sample / sample_max;
-    double portion_of_half_height = percentage * ((frame_inner_rect().height() - 1) / 2.0);
-    double y = (frame_inner_rect().height() / 2.0) + portion_of_half_height;
-    return y;
-}
-
-void WaveWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Painter painter(*this);
-    painter.fill_rect(frame_inner_rect(), Color::Black);
-    painter.translate(frame_thickness(), frame_thickness());
-
-    Color left_wave_color = left_wave_colors[m_track_manager.current_track().wave()];
-    Color right_wave_color = right_wave_colors[m_track_manager.current_track().wave()];
-    auto buffer = m_track_manager.buffer();
-    double width_scale = static_cast<double>(frame_inner_rect().width()) / buffer.size();
-
-    int prev_x = 0;
-    int prev_y_left = sample_to_y(buffer[0].left);
-    int prev_y_right = sample_to_y(buffer[0].right);
-    painter.set_pixel({ prev_x, prev_y_left }, left_wave_color);
-    painter.set_pixel({ prev_x, prev_y_right }, right_wave_color);
-
-    for (size_t x = 1; x < buffer.size(); ++x) {
-        int y_left = sample_to_y(buffer[x].left);
-        int y_right = sample_to_y(buffer[x].right);
-
-        Gfx::IntPoint point1_left(prev_x * width_scale, prev_y_left);
-        Gfx::IntPoint point2_left(x * width_scale, y_left);
-        painter.draw_line(point1_left, point2_left, left_wave_color);
-
-        Gfx::IntPoint point1_right(prev_x * width_scale, prev_y_right);
-        Gfx::IntPoint point2_right(x * width_scale, y_right);
-        painter.draw_line(point1_right, point2_right, right_wave_color);
-
-        prev_x = x;
-        prev_y_left = y_left;
-        prev_y_right = y_right;
-    }
-
-    GUI::Frame::paint_event(event);
-}
diff --git a/Applications/Piano/WaveWidget.h b/Applications/Piano/WaveWidget.h
deleted file mode 100644
index e8b9cd4d5f..0000000000
--- a/Applications/Piano/WaveWidget.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Frame.h>
-
-class TrackManager;
-
-class WaveWidget final : public GUI::Frame {
-    C_OBJECT(WaveWidget)
-public:
-    virtual ~WaveWidget() override;
-
-private:
-    explicit WaveWidget(TrackManager&);
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-
-    int sample_to_y(int sample) const;
-
-    TrackManager& m_track_manager;
-};
diff --git a/Applications/Piano/main.cpp b/Applications/Piano/main.cpp
deleted file mode 100644
index dc75e2944d..0000000000
--- a/Applications/Piano/main.cpp
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "MainWidget.h"
-#include "TrackManager.h"
-#include <AK/Array.h>
-#include <LibAudio/ClientConnection.h>
-#include <LibAudio/WavWriter.h>
-#include <LibCore/EventLoop.h>
-#include <LibCore/File.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <LibThread/Thread.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio thread rpath accept cpath wpath shared_buffer unix fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio thread rpath accept cpath wpath shared_buffer unix", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto audio_client = Audio::ClientConnection::construct();
-    audio_client->handshake();
-
-    TrackManager track_manager;
-
-    auto app_icon = GUI::Icon::default_icon("app-piano");
-    auto window = GUI::Window::construct();
-    auto& main_widget = window->set_main_widget<MainWidget>(track_manager);
-    window->set_title("Piano");
-    window->resize(840, 600);
-    window->set_icon(app_icon.bitmap_for_size(16));
-    window->show();
-
-    Audio::WavWriter wav_writer;
-    Optional<String> save_path;
-    bool need_to_write_wav = false;
-
-    auto audio_thread = LibThread::Thread::construct([&] {
-        auto audio = Core::File::construct("/dev/audio");
-        if (!audio->open(Core::IODevice::WriteOnly)) {
-            dbgln("Can't open audio device: {}", audio->error_string());
-            return 1;
-        }
-
-        Array<Sample, sample_count> buffer;
-        while (!Core::EventLoop::current().was_exit_requested()) {
-            track_manager.fill_buffer(buffer);
-            audio->write(reinterpret_cast<u8*>(buffer.data()), buffer_size);
-            Core::EventLoop::current().post_event(main_widget, make<Core::CustomEvent>(0));
-            Core::EventLoop::wake();
-
-            if (need_to_write_wav) {
-                need_to_write_wav = false;
-                track_manager.reset();
-                track_manager.set_should_loop(false);
-                do {
-                    track_manager.fill_buffer(buffer);
-                    wav_writer.write_samples(reinterpret_cast<u8*>(buffer.data()), buffer_size);
-                } while (track_manager.time());
-                track_manager.reset();
-                track_manager.set_should_loop(true);
-                wav_writer.finalize();
-            }
-        }
-        return 0;
-    });
-    audio_thread->start();
-
-    auto menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = menubar->add_menu("Piano");
-    app_menu.add_action(GUI::Action::create("Export", { Mod_Ctrl, Key_E }, [&](const GUI::Action&) {
-        save_path = GUI::FilePicker::get_save_filepath(window, "Untitled", "wav");
-        if (!save_path.has_value())
-            return;
-        wav_writer.set_file(save_path.value());
-        if (wav_writer.has_error()) {
-            GUI::MessageBox::show(window, String::formatted("Failed to export WAV file: {}", wav_writer.error_string()), "Error", GUI::MessageBox::Type::Error);
-            wav_writer.clear_error();
-            return;
-        }
-        need_to_write_wav = true;
-    }));
-    app_menu.add_separator();
-    app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
-        GUI::Application::the()->quit();
-        return;
-    }));
-
-    auto& edit_menu = menubar->add_menu("Edit");
-    main_widget.add_actions(edit_menu);
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Piano", app_icon, window));
-
-    app->set_menubar(move(menubar));
-
-    return app->exec();
-}
diff --git a/Applications/PixelPaint/BrushTool.cpp b/Applications/PixelPaint/BrushTool.cpp
deleted file mode 100644
index 200e270ea7..0000000000
--- a/Applications/PixelPaint/BrushTool.cpp
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "BrushTool.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/Slider.h>
-#include <LibGfx/Color.h>
-#include <LibGfx/Rect.h>
-#include <utility>
-
-namespace PixelPaint {
-
-BrushTool::BrushTool()
-{
-}
-
-BrushTool::~BrushTool()
-{
-}
-
-void BrushTool::on_mousedown(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() != GUI::MouseButton::Left && event.button() != GUI::MouseButton::Right)
-        return;
-
-    m_last_position = event.position();
-}
-
-void BrushTool::on_mousemove(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (!(event.buttons() & GUI::MouseButton::Left || event.buttons() & GUI::MouseButton::Right))
-        return;
-
-    draw_line(layer.bitmap(), m_editor->color_for(event), m_last_position, event.position());
-    layer.did_modify_bitmap(*m_editor->image());
-    m_last_position = event.position();
-    m_was_drawing = true;
-}
-
-void BrushTool::on_mouseup(Layer&, GUI::MouseEvent&, GUI::MouseEvent&)
-{
-    if (m_was_drawing) {
-        m_editor->did_complete_action();
-        m_was_drawing = false;
-    }
-}
-
-void BrushTool::draw_point(Gfx::Bitmap& bitmap, const Gfx::Color& color, const Gfx::IntPoint& point)
-{
-    for (int y = point.y() - m_size; y < point.y() + m_size; y++) {
-        for (int x = point.x() - m_size; x < point.x() + m_size; x++) {
-            auto distance = point.distance_from({ x, y });
-            if (x < 0 || x >= bitmap.width() || y < 0 || y >= bitmap.height())
-                continue;
-            if (distance >= m_size)
-                continue;
-
-            auto falloff = (1.0 - (distance / (float)m_size)) * (1.0f / (100 - m_hardness));
-            auto pixel_color = color;
-            pixel_color.set_alpha(falloff * 255);
-            bitmap.set_pixel(x, y, bitmap.get_pixel(x, y).blend(pixel_color));
-        }
-    }
-}
-
-void BrushTool::draw_line(Gfx::Bitmap& bitmap, const Gfx::Color& color, const Gfx::IntPoint& start, const Gfx::IntPoint& end)
-{
-    int length_x = end.x() - start.x();
-    int length_y = end.y() - start.y();
-    float y_step = length_y == 0 ? 0 : (float)(length_y) / (float)(length_x);
-    if (y_step > abs(length_y))
-        y_step = abs(length_y);
-    if (y_step < -abs(length_y))
-        y_step = -abs(length_y);
-    if (y_step == 0 && start.x() == end.x())
-        return;
-
-    int start_x = start.x();
-    int end_x = end.x();
-    int start_y = start.y();
-    int end_y = end.y();
-    if (start_x > end_x) {
-        swap(start_x, end_x);
-        swap(start_y, end_y);
-    }
-
-    float y = start_y;
-    for (int x = start_x; x <= end_x; x++) {
-        int start_step_y = y;
-        int end_step_y = y + y_step;
-        if (start_step_y > end_step_y)
-            swap(start_step_y, end_step_y);
-        for (int i = start_step_y; i <= end_step_y; i++)
-            draw_point(bitmap, color, { x, i });
-        y += y_step;
-    }
-}
-
-GUI::Widget* BrushTool::get_properties_widget()
-{
-    if (!m_properties_widget) {
-        m_properties_widget = GUI::Widget::construct();
-        m_properties_widget->set_layout<GUI::VerticalBoxLayout>();
-
-        auto& size_container = m_properties_widget->add<GUI::Widget>();
-        size_container.set_fixed_height(20);
-        size_container.set_layout<GUI::HorizontalBoxLayout>();
-
-        auto& size_label = size_container.add<GUI::Label>("Size:");
-        size_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-        size_label.set_fixed_size(80, 20);
-
-        auto& size_slider = size_container.add<GUI::HorizontalSlider>();
-        size_slider.set_fixed_height(20);
-        size_slider.set_range(1, 100);
-        size_slider.set_value(m_size);
-        size_slider.on_change = [this](int value) {
-            m_size = value;
-        };
-
-        auto& hardness_container = m_properties_widget->add<GUI::Widget>();
-        hardness_container.set_fixed_height(20);
-        hardness_container.set_layout<GUI::HorizontalBoxLayout>();
-
-        auto& hardness_label = hardness_container.add<GUI::Label>("Hardness:");
-        hardness_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-        hardness_label.set_fixed_size(80, 20);
-
-        auto& hardness_slider = hardness_container.add<GUI::HorizontalSlider>();
-        hardness_slider.set_fixed_height(20);
-        hardness_slider.set_range(1, 99);
-        hardness_slider.set_value(m_hardness);
-        hardness_slider.on_change = [this](int value) {
-            m_hardness = value;
-        };
-    }
-
-    return m_properties_widget.ptr();
-}
-
-}
diff --git a/Applications/PixelPaint/BrushTool.h b/Applications/PixelPaint/BrushTool.h
deleted file mode 100644
index 939ccdeef4..0000000000
--- a/Applications/PixelPaint/BrushTool.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Tool.h"
-
-namespace PixelPaint {
-
-class BrushTool final : public Tool {
-public:
-    BrushTool();
-    virtual ~BrushTool() override;
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mousemove(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mouseup(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual GUI::Widget* get_properties_widget() override;
-
-private:
-    RefPtr<GUI::Widget> m_properties_widget;
-    int m_size { 20 };
-    int m_hardness { 80 };
-    bool m_was_drawing { false };
-    Gfx::IntPoint m_last_position;
-
-    void draw_line(Gfx::Bitmap& bitmap, const Gfx::Color& color, const Gfx::IntPoint& start, const Gfx::IntPoint& end);
-    void draw_point(Gfx::Bitmap& bitmap, const Gfx::Color& color, const Gfx::IntPoint& point);
-};
-
-}
diff --git a/Applications/PixelPaint/BucketTool.cpp b/Applications/PixelPaint/BucketTool.cpp
deleted file mode 100644
index 6cffddac20..0000000000
--- a/Applications/PixelPaint/BucketTool.cpp
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "BucketTool.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <AK/Queue.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/Slider.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/Rect.h>
-
-namespace PixelPaint {
-
-BucketTool::BucketTool()
-{
-}
-
-BucketTool::~BucketTool()
-{
-}
-
-static float color_distance_squared(const Gfx::Color& lhs, const Gfx::Color& rhs)
-{
-    int a = rhs.red() - lhs.red();
-    int b = rhs.green() - lhs.green();
-    int c = rhs.blue() - lhs.blue();
-    return (a * a + b * b + c * c) / (255.0f * 255.0f);
-}
-
-static void flood_fill(Gfx::Bitmap& bitmap, const Gfx::IntPoint& start_position, Color target_color, Color fill_color, int threshold)
-{
-    ASSERT(bitmap.bpp() == 32);
-
-    if (target_color == fill_color)
-        return;
-
-    if (!bitmap.rect().contains(start_position))
-        return;
-
-    float threshold_normalized_squared = (threshold / 100.0f) * (threshold / 100.0f);
-
-    Queue<Gfx::IntPoint> queue;
-    queue.enqueue(start_position);
-    while (!queue.is_empty()) {
-        auto position = queue.dequeue();
-
-        auto pixel_color = bitmap.get_pixel<Gfx::StorageFormat::RGBA32>(position.x(), position.y());
-        if (color_distance_squared(pixel_color, target_color) > threshold_normalized_squared)
-            continue;
-
-        bitmap.set_pixel<Gfx::StorageFormat::RGBA32>(position.x(), position.y(), fill_color);
-
-        if (position.x() != 0)
-            queue.enqueue(position.translated(-1, 0));
-
-        if (position.x() != bitmap.width() - 1)
-            queue.enqueue(position.translated(1, 0));
-
-        if (position.y() != 0)
-            queue.enqueue(position.translated(0, -1));
-
-        if (position.y() != bitmap.height() - 1)
-            queue.enqueue(position.translated(0, 1));
-    }
-}
-
-void BucketTool::on_mousedown(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (!layer.rect().contains(event.position()))
-        return;
-
-    GUI::Painter painter(layer.bitmap());
-    auto target_color = layer.bitmap().get_pixel(event.x(), event.y());
-
-    flood_fill(layer.bitmap(), event.position(), target_color, m_editor->color_for(event), m_threshold);
-
-    layer.did_modify_bitmap(*m_editor->image());
-    m_editor->did_complete_action();
-}
-
-GUI::Widget* BucketTool::get_properties_widget()
-{
-    if (!m_properties_widget) {
-        m_properties_widget = GUI::Widget::construct();
-        m_properties_widget->set_layout<GUI::VerticalBoxLayout>();
-
-        auto& threshold_container = m_properties_widget->add<GUI::Widget>();
-        threshold_container.set_fixed_height(20);
-        threshold_container.set_layout<GUI::HorizontalBoxLayout>();
-
-        auto& threshold_label = threshold_container.add<GUI::Label>("Threshold:");
-        threshold_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-        threshold_label.set_fixed_size(80, 20);
-
-        auto& threshold_slider = threshold_container.add<GUI::HorizontalSlider>();
-        threshold_slider.set_fixed_height(20);
-        threshold_slider.set_range(0, 100);
-        threshold_slider.set_value(m_threshold);
-        threshold_slider.on_change = [this](int value) {
-            m_threshold = value;
-        };
-    }
-
-    return m_properties_widget.ptr();
-}
-
-}
diff --git a/Applications/PixelPaint/BucketTool.h b/Applications/PixelPaint/BucketTool.h
deleted file mode 100644
index b4bf700815..0000000000
--- a/Applications/PixelPaint/BucketTool.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Tool.h"
-
-namespace PixelPaint {
-
-class BucketTool final : public Tool {
-public:
-    BucketTool();
-    virtual ~BucketTool() override;
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual GUI::Widget* get_properties_widget() override;
-
-private:
-    RefPtr<GUI::Widget> m_properties_widget;
-    int m_threshold { 0 };
-};
-
-}
diff --git a/Applications/PixelPaint/CMakeLists.txt b/Applications/PixelPaint/CMakeLists.txt
deleted file mode 100644
index 713845c80e..0000000000
--- a/Applications/PixelPaint/CMakeLists.txt
+++ /dev/null
@@ -1,27 +0,0 @@
-set(SOURCES
-    BrushTool.cpp
-    BucketTool.cpp
-    CreateNewImageDialog.cpp
-    CreateNewLayerDialog.cpp
-    EllipseTool.cpp
-    EraseTool.cpp
-    Image.cpp
-    ImageEditor.cpp
-    Layer.cpp
-    LayerListWidget.cpp
-    LayerPropertiesWidget.cpp
-    LineTool.cpp
-    main.cpp
-    MoveTool.cpp
-    PaletteWidget.cpp
-    PenTool.cpp
-    PickerTool.cpp
-    RectangleTool.cpp
-    SprayTool.cpp
-    ToolboxWidget.cpp
-    ToolPropertiesWidget.cpp
-    Tool.cpp
-)
-
-serenity_app(PixelPaint ICON app-pixel-paint)
-target_link_libraries(PixelPaint LibGUI LibGfx)
diff --git a/Applications/PixelPaint/CreateNewImageDialog.cpp b/Applications/PixelPaint/CreateNewImageDialog.cpp
deleted file mode 100644
index 0696b69ba8..0000000000
--- a/Applications/PixelPaint/CreateNewImageDialog.cpp
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "CreateNewImageDialog.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/SpinBox.h>
-#include <LibGUI/TextBox.h>
-
-namespace PixelPaint {
-
-CreateNewImageDialog::CreateNewImageDialog(GUI::Window* parent_window)
-    : Dialog(parent_window)
-{
-    set_title("Create new image");
-    resize(200, 200);
-
-    auto& main_widget = set_main_widget<GUI::Widget>();
-    main_widget.set_fill_with_background_color(true);
-
-    auto& layout = main_widget.set_layout<GUI::VerticalBoxLayout>();
-    layout.set_margins({ 4, 4, 4, 4 });
-
-    auto& name_label = main_widget.add<GUI::Label>("Name:");
-    name_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-
-    m_name_textbox = main_widget.add<GUI::TextBox>();
-    m_name_textbox->on_change = [this] {
-        m_image_name = m_name_textbox->text();
-    };
-
-    auto& width_label = main_widget.add<GUI::Label>("Width:");
-    width_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-
-    auto& width_spinbox = main_widget.add<GUI::SpinBox>();
-
-    auto& height_label = main_widget.add<GUI::Label>("Height:");
-    height_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-
-    auto& height_spinbox = main_widget.add<GUI::SpinBox>();
-
-    auto& button_container = main_widget.add<GUI::Widget>();
-    button_container.set_layout<GUI::HorizontalBoxLayout>();
-
-    auto& ok_button = button_container.add<GUI::Button>("OK");
-    ok_button.on_click = [this](auto) {
-        done(ExecOK);
-    };
-
-    auto& cancel_button = button_container.add<GUI::Button>("Cancel");
-    cancel_button.on_click = [this](auto) {
-        done(ExecCancel);
-    };
-
-    width_spinbox.on_change = [this](int value) {
-        m_image_size.set_width(value);
-    };
-
-    height_spinbox.on_change = [this](int value) {
-        m_image_size.set_height(value);
-    };
-
-    width_spinbox.set_range(0, 16384);
-    height_spinbox.set_range(0, 16384);
-}
-
-}
diff --git a/Applications/PixelPaint/CreateNewImageDialog.h b/Applications/PixelPaint/CreateNewImageDialog.h
deleted file mode 100644
index b46b65adab..0000000000
--- a/Applications/PixelPaint/CreateNewImageDialog.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Dialog.h>
-
-namespace PixelPaint {
-
-class CreateNewImageDialog final : public GUI::Dialog {
-    C_OBJECT(CreateNewImageDialog)
-
-public:
-    const Gfx::IntSize& image_size() const { return m_image_size; }
-    const String& image_name() const { return m_image_name; }
-
-private:
-    CreateNewImageDialog(GUI::Window* parent_window);
-
-    String m_image_name;
-    Gfx::IntSize m_image_size;
-
-    RefPtr<GUI::TextBox> m_name_textbox;
-};
-
-}
diff --git a/Applications/PixelPaint/CreateNewLayerDialog.cpp b/Applications/PixelPaint/CreateNewLayerDialog.cpp
deleted file mode 100644
index 02f65b51ad..0000000000
--- a/Applications/PixelPaint/CreateNewLayerDialog.cpp
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "CreateNewLayerDialog.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/SpinBox.h>
-#include <LibGUI/TextBox.h>
-
-namespace PixelPaint {
-
-CreateNewLayerDialog::CreateNewLayerDialog(const Gfx::IntSize& suggested_size, GUI::Window* parent_window)
-    : Dialog(parent_window)
-{
-    set_title("Create new layer");
-    set_icon(parent_window->icon());
-    resize(200, 200);
-
-    auto& main_widget = set_main_widget<GUI::Widget>();
-    main_widget.set_fill_with_background_color(true);
-
-    auto& layout = main_widget.set_layout<GUI::VerticalBoxLayout>();
-    layout.set_margins({ 4, 4, 4, 4 });
-
-    auto& name_label = main_widget.add<GUI::Label>("Name:");
-    name_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-
-    m_name_textbox = main_widget.add<GUI::TextBox>();
-    m_name_textbox->on_change = [this] {
-        m_layer_name = m_name_textbox->text();
-    };
-
-    auto& width_label = main_widget.add<GUI::Label>("Width:");
-    width_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-
-    auto& width_spinbox = main_widget.add<GUI::SpinBox>();
-
-    auto& height_label = main_widget.add<GUI::Label>("Height:");
-    height_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-
-    auto& height_spinbox = main_widget.add<GUI::SpinBox>();
-
-    auto& button_container = main_widget.add<GUI::Widget>();
-    button_container.set_layout<GUI::HorizontalBoxLayout>();
-
-    auto& ok_button = button_container.add<GUI::Button>("OK");
-    ok_button.on_click = [this](auto) {
-        done(ExecOK);
-    };
-
-    auto& cancel_button = button_container.add<GUI::Button>("Cancel");
-    cancel_button.on_click = [this](auto) {
-        done(ExecCancel);
-    };
-
-    width_spinbox.on_change = [this](int value) {
-        m_layer_size.set_width(value);
-    };
-
-    height_spinbox.on_change = [this](int value) {
-        m_layer_size.set_height(value);
-    };
-
-    width_spinbox.set_range(0, 16384);
-    height_spinbox.set_range(0, 16384);
-
-    width_spinbox.set_value(suggested_size.width());
-    height_spinbox.set_value(suggested_size.height());
-}
-
-}
diff --git a/Applications/PixelPaint/CreateNewLayerDialog.h b/Applications/PixelPaint/CreateNewLayerDialog.h
deleted file mode 100644
index bb07ff9943..0000000000
--- a/Applications/PixelPaint/CreateNewLayerDialog.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Dialog.h>
-
-namespace PixelPaint {
-
-class CreateNewLayerDialog final : public GUI::Dialog {
-    C_OBJECT(CreateNewLayerDialog);
-
-public:
-    const Gfx::IntSize& layer_size() const { return m_layer_size; }
-    const String& layer_name() const { return m_layer_name; }
-
-private:
-    CreateNewLayerDialog(const Gfx::IntSize& suggested_size, GUI::Window* parent_window);
-
-    Gfx::IntSize m_layer_size;
-    String m_layer_name;
-
-    RefPtr<GUI::TextBox> m_name_textbox;
-};
-
-}
diff --git a/Applications/PixelPaint/EllipseTool.cpp b/Applications/PixelPaint/EllipseTool.cpp
deleted file mode 100644
index 0501e2fb96..0000000000
--- a/Applications/PixelPaint/EllipseTool.cpp
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "EllipseTool.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Painter.h>
-#include <LibGfx/Rect.h>
-#include <math.h>
-
-namespace PixelPaint {
-
-EllipseTool::EllipseTool()
-{
-}
-
-EllipseTool::~EllipseTool()
-{
-}
-
-void EllipseTool::draw_using(GUI::Painter& painter, const Gfx::IntRect& ellipse_intersecting_rect)
-{
-    switch (m_mode) {
-    case Mode::Outline:
-        painter.draw_ellipse_intersecting(ellipse_intersecting_rect, m_editor->color_for(m_drawing_button), m_thickness);
-        break;
-    default:
-        ASSERT_NOT_REACHED();
-    }
-}
-
-void EllipseTool::on_mousedown(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() != GUI::MouseButton::Left && event.button() != GUI::MouseButton::Right)
-        return;
-
-    if (m_drawing_button != GUI::MouseButton::None)
-        return;
-
-    m_drawing_button = event.button();
-    m_ellipse_start_position = event.position();
-    m_ellipse_end_position = event.position();
-    m_editor->update();
-}
-
-void EllipseTool::on_mouseup(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() == m_drawing_button) {
-        GUI::Painter painter(layer.bitmap());
-        draw_using(painter, Gfx::IntRect::from_two_points(m_ellipse_start_position, m_ellipse_end_position));
-        m_drawing_button = GUI::MouseButton::None;
-        m_editor->update();
-        m_editor->did_complete_action();
-    }
-}
-
-void EllipseTool::on_mousemove(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (m_drawing_button == GUI::MouseButton::None)
-        return;
-
-    m_ellipse_end_position = event.position();
-    m_editor->update();
-}
-
-void EllipseTool::on_second_paint(const Layer& layer, GUI::PaintEvent& event)
-{
-    if (m_drawing_button == GUI::MouseButton::None)
-        return;
-
-    GUI::Painter painter(*m_editor);
-    painter.add_clip_rect(event.rect());
-    auto preview_start = m_editor->layer_position_to_editor_position(layer, m_ellipse_start_position).to_type<int>();
-    auto preview_end = m_editor->layer_position_to_editor_position(layer, m_ellipse_end_position).to_type<int>();
-    draw_using(painter, Gfx::IntRect::from_two_points(preview_start, preview_end));
-}
-
-void EllipseTool::on_keydown(GUI::KeyEvent& event)
-{
-    if (event.key() == Key_Escape && m_drawing_button != GUI::MouseButton::None) {
-        m_drawing_button = GUI::MouseButton::None;
-        m_editor->update();
-        event.accept();
-    }
-}
-
-void EllipseTool::on_tool_button_contextmenu(GUI::ContextMenuEvent& event)
-{
-    if (!m_context_menu) {
-        m_context_menu = GUI::Menu::construct();
-        m_context_menu->add_action(GUI::Action::create("Outline", [this](auto&) {
-            m_mode = Mode::Outline;
-        }));
-        m_context_menu->add_separator();
-        m_thickness_actions.set_exclusive(true);
-        auto insert_action = [&](int size, bool checked = false) {
-            auto action = GUI::Action::create_checkable(String::number(size), [this, size](auto&) {
-                m_thickness = size;
-            });
-            action->set_checked(checked);
-            m_thickness_actions.add_action(*action);
-            m_context_menu->add_action(move(action));
-        };
-        insert_action(1, true);
-        insert_action(2);
-        insert_action(3);
-        insert_action(4);
-    }
-    m_context_menu->popup(event.screen_position());
-}
-
-}
diff --git a/Applications/PixelPaint/EllipseTool.h b/Applications/PixelPaint/EllipseTool.h
deleted file mode 100644
index 0b1c10c89a..0000000000
--- a/Applications/PixelPaint/EllipseTool.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Tool.h"
-#include <LibGUI/ActionGroup.h>
-#include <LibGfx/Point.h>
-
-namespace PixelPaint {
-
-class EllipseTool final : public Tool {
-public:
-    EllipseTool();
-    virtual ~EllipseTool() override;
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mousemove(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mouseup(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_tool_button_contextmenu(GUI::ContextMenuEvent&) override;
-    virtual void on_second_paint(const Layer&, GUI::PaintEvent&) override;
-    virtual void on_keydown(GUI::KeyEvent&) override;
-
-private:
-    enum class Mode {
-        Outline,
-        // FIXME: Add Mode::Fill
-    };
-
-    void draw_using(GUI::Painter&, const Gfx::IntRect&);
-
-    GUI::MouseButton m_drawing_button { GUI::MouseButton::None };
-    Gfx::IntPoint m_ellipse_start_position;
-    Gfx::IntPoint m_ellipse_end_position;
-    RefPtr<GUI::Menu> m_context_menu;
-    int m_thickness { 1 };
-    GUI::ActionGroup m_thickness_actions;
-    Mode m_mode { Mode::Outline };
-};
-
-}
diff --git a/Applications/PixelPaint/EraseTool.cpp b/Applications/PixelPaint/EraseTool.cpp
deleted file mode 100644
index 19d1482ba8..0000000000
--- a/Applications/PixelPaint/EraseTool.cpp
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "EraseTool.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Painter.h>
-#include <LibGfx/Bitmap.h>
-
-namespace PixelPaint {
-
-EraseTool::EraseTool()
-{
-}
-
-EraseTool::~EraseTool()
-{
-}
-
-Gfx::IntRect EraseTool::build_rect(const Gfx::IntPoint& pos, const Gfx::IntRect& widget_rect)
-{
-    const int base_eraser_size = 10;
-    const int eraser_size = (base_eraser_size * m_thickness);
-    const int eraser_radius = eraser_size / 2;
-    const auto ex = pos.x();
-    const auto ey = pos.y();
-    return Gfx::IntRect(ex - eraser_radius, ey - eraser_radius, eraser_size, eraser_size).intersected(widget_rect);
-}
-
-void EraseTool::on_mousedown(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() != GUI::MouseButton::Left && event.button() != GUI::MouseButton::Right)
-        return;
-    Gfx::IntRect r = build_rect(event.position(), layer.rect());
-    GUI::Painter painter(layer.bitmap());
-    painter.clear_rect(r, get_color());
-    layer.did_modify_bitmap(*m_editor->image());
-}
-
-void EraseTool::on_mousemove(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.buttons() & GUI::MouseButton::Left || event.buttons() & GUI::MouseButton::Right) {
-        Gfx::IntRect r = build_rect(event.position(), layer.rect());
-        GUI::Painter painter(layer.bitmap());
-        painter.clear_rect(r, get_color());
-        layer.did_modify_bitmap(*m_editor->image());
-    }
-}
-
-void EraseTool::on_mouseup(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() != GUI::MouseButton::Left && event.button() != GUI::MouseButton::Right)
-        return;
-    m_editor->did_complete_action();
-}
-
-void EraseTool::on_tool_button_contextmenu(GUI::ContextMenuEvent& event)
-{
-    if (!m_context_menu) {
-        m_context_menu = GUI::Menu::construct();
-
-        auto eraser_color_toggler = GUI::Action::create_checkable("Use secondary color", [&](auto& action) {
-            m_use_secondary_color = action.is_checked();
-        });
-        eraser_color_toggler->set_checked(m_use_secondary_color);
-
-        m_context_menu->add_action(eraser_color_toggler);
-        m_context_menu->add_separator();
-
-        m_thickness_actions.set_exclusive(true);
-        auto insert_action = [&](int size, bool checked = false) {
-            auto action = GUI::Action::create_checkable(String::number(size), [this, size](auto&) {
-                m_thickness = size;
-            });
-            action->set_checked(checked);
-            m_thickness_actions.add_action(*action);
-            m_context_menu->add_action(move(action));
-        };
-        insert_action(1, true);
-        insert_action(2);
-        insert_action(3);
-        insert_action(4);
-    }
-
-    m_context_menu->popup(event.screen_position());
-}
-
-Color EraseTool::get_color() const
-{
-    if (m_use_secondary_color)
-        return m_editor->secondary_color();
-    return Color(255, 255, 255, 0);
-}
-
-}
diff --git a/Applications/PixelPaint/EraseTool.h b/Applications/PixelPaint/EraseTool.h
deleted file mode 100644
index 16241e87f0..0000000000
--- a/Applications/PixelPaint/EraseTool.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Tool.h"
-#include <LibGUI/ActionGroup.h>
-#include <LibGfx/Forward.h>
-#include <LibGfx/Point.h>
-
-namespace PixelPaint {
-
-class EraseTool final : public Tool {
-public:
-    EraseTool();
-    virtual ~EraseTool() override;
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mousemove(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mouseup(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_tool_button_contextmenu(GUI::ContextMenuEvent&) override;
-
-private:
-    Gfx::Color get_color() const;
-    Gfx::IntRect build_rect(const Gfx::IntPoint& pos, const Gfx::IntRect& widget_rect);
-    RefPtr<GUI::Menu> m_context_menu;
-
-    bool m_use_secondary_color { false };
-    int m_thickness { 1 };
-    GUI::ActionGroup m_thickness_actions;
-};
-
-}
diff --git a/Applications/PixelPaint/FilterParams.h b/Applications/PixelPaint/FilterParams.h
deleted file mode 100644
index 398caecf9f..0000000000
--- a/Applications/PixelPaint/FilterParams.h
+++ /dev/null
@@ -1,191 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Action.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/CheckBox.h>
-#include <LibGUI/Dialog.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/TextBox.h>
-#include <LibGfx/Filters/BoxBlurFilter.h>
-#include <LibGfx/Filters/GenericConvolutionFilter.h>
-#include <LibGfx/Filters/LaplacianFilter.h>
-#include <LibGfx/Filters/SharpenFilter.h>
-#include <LibGfx/Filters/SpatialGaussianBlurFilter.h>
-
-namespace PixelPaint {
-
-template<typename Filter>
-struct FilterParameters {
-};
-
-template<size_t N>
-class GenericConvolutionFilterInputDialog : public GUI::Dialog {
-    C_OBJECT(GenericConvolutionFilterInputDialog);
-
-public:
-    const Matrix<N, float>& matrix() const { return m_matrix; }
-    bool should_wrap() const { return m_should_wrap; }
-
-private:
-    explicit GenericConvolutionFilterInputDialog(GUI::Window* parent_window)
-        : Dialog(parent_window)
-    {
-        // FIXME: Help! Make this GUI less ugly.
-        StringBuilder builder;
-        builder.appendf("%zux%zu", N, N);
-        builder.append(" Convolution");
-        set_title(builder.string_view());
-
-        resize(200, 250);
-        auto& main_widget = set_main_widget<GUI::Frame>();
-        main_widget.set_frame_shape(Gfx::FrameShape::Container);
-        main_widget.set_frame_shadow(Gfx::FrameShadow::Raised);
-        main_widget.set_fill_with_background_color(true);
-        auto& layout = main_widget.template set_layout<GUI::VerticalBoxLayout>();
-        layout.set_margins({ 4, 4, 4, 4 });
-
-        size_t index = 0;
-        size_t columns = N;
-        size_t rows = N;
-
-        for (size_t row = 0; row < rows; ++row) {
-            auto& horizontal_container = main_widget.template add<GUI::Widget>();
-            horizontal_container.template set_layout<GUI::HorizontalBoxLayout>();
-            for (size_t column = 0; column < columns; ++column) {
-                if (index < columns * rows) {
-                    auto& textbox = horizontal_container.template add<GUI::TextBox>();
-                    textbox.on_change = [&, row = row, column = column] {
-                        auto& element = m_matrix.elements()[row][column];
-                        char* endptr = nullptr;
-                        auto value = strtof(textbox.text().characters(), &endptr);
-                        if (endptr != nullptr)
-                            element = value;
-                        else
-                            textbox.set_text("");
-                    };
-                } else {
-                    horizontal_container.template add<GUI::Widget>();
-                }
-            }
-        }
-
-        auto& norm_checkbox = main_widget.template add<GUI::CheckBox>("Normalize");
-        norm_checkbox.set_checked(false);
-
-        auto& wrap_checkbox = main_widget.template add<GUI::CheckBox>("Wrap");
-        wrap_checkbox.set_checked(m_should_wrap);
-
-        auto& button = main_widget.template add<GUI::Button>("Done");
-        button.on_click = [&](auto) {
-            m_should_wrap = wrap_checkbox.is_checked();
-            if (norm_checkbox.is_checked())
-                normalize(m_matrix);
-            done(ExecOK);
-        };
-    }
-
-    Matrix<N, float> m_matrix {};
-    bool m_should_wrap { false };
-};
-
-template<size_t N>
-struct FilterParameters<Gfx::SpatialGaussianBlurFilter<N>> {
-    static OwnPtr<typename Gfx::SpatialGaussianBlurFilter<N>::Parameters> get()
-    {
-        constexpr static ssize_t offset = N / 2;
-        Matrix<N, float> kernel;
-        auto sigma = 1.0f;
-        auto s = 2.0f * sigma * sigma;
-
-        for (auto x = -offset; x <= offset; x++) {
-            for (auto y = -offset; y <= offset; y++) {
-                auto r = sqrt(x * x + y * y);
-                kernel.elements()[x + offset][y + offset] = (exp(-(r * r) / s)) / (M_PI * s);
-            }
-        }
-
-        normalize(kernel);
-
-        return make<typename Gfx::GenericConvolutionFilter<N>::Parameters>(kernel);
-    }
-};
-
-template<>
-struct FilterParameters<Gfx::SharpenFilter> {
-    static OwnPtr<Gfx::GenericConvolutionFilter<3>::Parameters> get()
-    {
-        return make<Gfx::GenericConvolutionFilter<3>::Parameters>(Matrix<3, float>(0, -1, 0, -1, 5, -1, 0, -1, 0));
-    }
-};
-
-template<>
-struct FilterParameters<Gfx::LaplacianFilter> {
-    static OwnPtr<Gfx::GenericConvolutionFilter<3>::Parameters> get(bool diagonal)
-    {
-        if (diagonal)
-            return make<Gfx::GenericConvolutionFilter<3>::Parameters>(Matrix<3, float>(-1, -1, -1, -1, 8, -1, -1, -1, -1));
-
-        return make<Gfx::GenericConvolutionFilter<3>::Parameters>(Matrix<3, float>(0, -1, 0, -1, 4, -1, 0, -1, 0));
-    }
-};
-
-template<size_t N>
-struct FilterParameters<Gfx::GenericConvolutionFilter<N>> {
-    static OwnPtr<typename Gfx::GenericConvolutionFilter<N>::Parameters> get(GUI::Window* parent_window)
-    {
-        auto input = GenericConvolutionFilterInputDialog<N>::construct(parent_window);
-        input->exec();
-        if (input->result() == GUI::Dialog::ExecOK)
-            return make<typename Gfx::GenericConvolutionFilter<N>::Parameters>(input->matrix(), input->should_wrap());
-
-        return {};
-    }
-};
-
-template<size_t N>
-struct FilterParameters<Gfx::BoxBlurFilter<N>> {
-    static OwnPtr<typename Gfx::GenericConvolutionFilter<N>::Parameters> get()
-    {
-        Matrix<N, float> kernel;
-
-        for (size_t i = 0; i < N; ++i) {
-            for (size_t j = 0; j < N; ++j) {
-                kernel.elements()[i][j] = 1;
-            }
-        }
-
-        normalize(kernel);
-
-        return make<typename Gfx::GenericConvolutionFilter<N>::Parameters>(kernel);
-    }
-};
-
-}
diff --git a/Applications/PixelPaint/Image.cpp b/Applications/PixelPaint/Image.cpp
deleted file mode 100644
index 09a075dfe0..0000000000
--- a/Applications/PixelPaint/Image.cpp
+++ /dev/null
@@ -1,331 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Image.h"
-#include "Layer.h"
-#include <AK/Base64.h>
-#include <AK/JsonObject.h>
-#include <AK/JsonObjectSerializer.h>
-#include <AK/JsonValue.h>
-#include <AK/StringBuilder.h>
-#include <LibGUI/Painter.h>
-#include <LibGfx/BMPWriter.h>
-#include <LibGfx/ImageDecoder.h>
-#include <stdio.h>
-
-//#define PAINT_DEBUG
-
-namespace PixelPaint {
-
-RefPtr<Image> Image::create_with_size(const Gfx::IntSize& size)
-{
-    if (size.is_empty())
-        return nullptr;
-
-    if (size.width() > 16384 || size.height() > 16384)
-        return nullptr;
-
-    return adopt(*new Image(size));
-}
-
-Image::Image(const Gfx::IntSize& size)
-    : m_size(size)
-{
-}
-
-void Image::paint_into(GUI::Painter& painter, const Gfx::IntRect& dest_rect)
-{
-    float scale = (float)dest_rect.width() / (float)rect().width();
-    Gfx::PainterStateSaver saver(painter);
-    painter.add_clip_rect(dest_rect);
-    for (auto& layer : m_layers) {
-        if (!layer.is_visible())
-            continue;
-        auto target = dest_rect.translated(layer.location().x() * scale, layer.location().y() * scale);
-        target.set_size(layer.size().width() * scale, layer.size().height() * scale);
-        painter.draw_scaled_bitmap(target, layer.bitmap(), layer.rect(), (float)layer.opacity_percent() / 100.0f);
-    }
-}
-
-RefPtr<Image> Image::create_from_file(const String& file_path)
-{
-    auto file = fopen(file_path.characters(), "r");
-    fseek(file, 0L, SEEK_END);
-    auto length = ftell(file);
-    rewind(file);
-
-    auto buffer = ByteBuffer::create_uninitialized(length);
-    fread(buffer.data(), sizeof(u8), length, file);
-    fclose(file);
-
-    auto json_or_error = JsonValue::from_string(String::copy(buffer));
-    if (!json_or_error.has_value())
-        return nullptr;
-
-    auto json = json_or_error.value().as_object();
-    auto image = create_with_size({ json.get("width").to_i32(), json.get("height").to_i32() });
-    json.get("layers").as_array().for_each([&](JsonValue json_layer) {
-        auto json_layer_object = json_layer.as_object();
-        auto width = json_layer_object.get("width").to_i32();
-        auto height = json_layer_object.get("height").to_i32();
-        auto name = json_layer_object.get("name").as_string();
-        auto layer = Layer::create_with_size(*image, { width, height }, name);
-        layer->set_location({ json_layer_object.get("locationx").to_i32(), json_layer_object.get("locationy").to_i32() });
-        layer->set_opacity_percent(json_layer_object.get("opacity_percent").to_i32());
-        layer->set_visible(json_layer_object.get("visible").as_bool());
-        layer->set_selected(json_layer_object.get("selected").as_bool());
-
-        auto bitmap_base64_encoded = json_layer_object.get("bitmap").as_string();
-        auto bitmap_data = decode_base64(bitmap_base64_encoded);
-        auto image_decoder = Gfx::ImageDecoder::create(bitmap_data);
-        layer->set_bitmap(*image_decoder->bitmap());
-        image->add_layer(*layer);
-    });
-
-    return image;
-}
-
-void Image::save(const String& file_path) const
-{
-    // Build json file
-    StringBuilder builder;
-    JsonObjectSerializer json(builder);
-    json.add("width", m_size.width());
-    json.add("height", m_size.height());
-    {
-        auto json_layers = json.add_array("layers");
-        for (const auto& layer : m_layers) {
-            Gfx::BMPWriter bmp_dumber;
-            auto json_layer = json_layers.add_object();
-            json_layer.add("width", layer.size().width());
-            json_layer.add("height", layer.size().height());
-            json_layer.add("name", layer.name());
-            json_layer.add("locationx", layer.location().x());
-            json_layer.add("locationy", layer.location().y());
-            json_layer.add("opacity_percent", layer.opacity_percent());
-            json_layer.add("visible", layer.is_visible());
-            json_layer.add("selected", layer.is_selected());
-            json_layer.add("bitmap", encode_base64(bmp_dumber.dump(layer.bitmap())));
-        }
-    }
-    json.finish();
-
-    // Write json to disk
-    auto file = fopen(file_path.characters(), "w");
-    auto byte_buffer = builder.to_byte_buffer();
-    fwrite(byte_buffer.data(), sizeof(u8), byte_buffer.size(), file);
-    fclose(file);
-}
-
-void Image::export_bmp(const String& file_path)
-{
-    auto bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, m_size);
-    GUI::Painter painter(*bitmap);
-    paint_into(painter, { 0, 0, m_size.width(), m_size.height() });
-
-    Gfx::BMPWriter dumper;
-    auto bmp = dumper.dump(bitmap);
-    auto file = fopen(file_path.characters(), "wb");
-    fwrite(bmp.data(), sizeof(u8), bmp.size(), file);
-    fclose(file);
-}
-
-void Image::add_layer(NonnullRefPtr<Layer> layer)
-{
-    for (auto& existing_layer : m_layers) {
-        ASSERT(&existing_layer != layer.ptr());
-    }
-    m_layers.append(move(layer));
-
-    for (auto* client : m_clients)
-        client->image_did_add_layer(m_layers.size() - 1);
-
-    did_modify_layer_stack();
-}
-
-RefPtr<Image> Image::take_snapshot() const
-{
-    auto snapshot = create_with_size(m_size);
-    for (const auto& layer : m_layers)
-        snapshot->add_layer(*Layer::create_snapshot(*snapshot, layer));
-    return snapshot;
-}
-
-void Image::restore_snapshot(const Image& snapshot)
-{
-    m_layers.clear();
-    select_layer(nullptr);
-    for (const auto& snapshot_layer : snapshot.m_layers) {
-        auto layer = Layer::create_snapshot(*this, snapshot_layer);
-        if (layer->is_selected())
-            select_layer(layer.ptr());
-        add_layer(*layer);
-    }
-
-    did_modify_layer_stack();
-}
-
-size_t Image::index_of(const Layer& layer) const
-{
-    for (size_t i = 0; i < m_layers.size(); ++i) {
-        if (&m_layers.at(i) == &layer)
-            return i;
-    }
-    ASSERT_NOT_REACHED();
-}
-
-void Image::move_layer_to_back(Layer& layer)
-{
-    NonnullRefPtr<Layer> protector(layer);
-    auto index = index_of(layer);
-    m_layers.remove(index);
-    m_layers.prepend(layer);
-
-    did_modify_layer_stack();
-}
-
-void Image::move_layer_to_front(Layer& layer)
-{
-    NonnullRefPtr<Layer> protector(layer);
-    auto index = index_of(layer);
-    m_layers.remove(index);
-    m_layers.append(layer);
-
-    did_modify_layer_stack();
-}
-
-void Image::move_layer_down(Layer& layer)
-{
-    NonnullRefPtr<Layer> protector(layer);
-    auto index = index_of(layer);
-    if (!index)
-        return;
-    m_layers.remove(index);
-    m_layers.insert(index - 1, layer);
-
-    did_modify_layer_stack();
-}
-
-void Image::move_layer_up(Layer& layer)
-{
-    NonnullRefPtr<Layer> protector(layer);
-    auto index = index_of(layer);
-    if (index == m_layers.size() - 1)
-        return;
-    m_layers.remove(index);
-    m_layers.insert(index + 1, layer);
-
-    did_modify_layer_stack();
-}
-
-void Image::change_layer_index(size_t old_index, size_t new_index)
-{
-    ASSERT(old_index < m_layers.size());
-    ASSERT(new_index < m_layers.size());
-    auto layer = m_layers.take(old_index);
-    m_layers.insert(new_index, move(layer));
-    did_modify_layer_stack();
-}
-
-void Image::did_modify_layer_stack()
-{
-    for (auto* client : m_clients)
-        client->image_did_modify_layer_stack();
-
-    did_change();
-}
-
-void Image::remove_layer(Layer& layer)
-{
-    NonnullRefPtr<Layer> protector(layer);
-    auto index = index_of(layer);
-    m_layers.remove(index);
-
-    for (auto* client : m_clients)
-        client->image_did_remove_layer(index);
-
-    did_modify_layer_stack();
-}
-
-void Image::select_layer(Layer* layer)
-{
-    for (auto* client : m_clients)
-        client->image_select_layer(layer);
-}
-
-void Image::add_client(ImageClient& client)
-{
-    ASSERT(!m_clients.contains(&client));
-    m_clients.set(&client);
-}
-
-void Image::remove_client(ImageClient& client)
-{
-    ASSERT(m_clients.contains(&client));
-    m_clients.remove(&client);
-}
-
-void Image::layer_did_modify_bitmap(Badge<Layer>, const Layer& layer)
-{
-    auto layer_index = index_of(layer);
-    for (auto* client : m_clients)
-        client->image_did_modify_layer(layer_index);
-
-    did_change();
-}
-
-void Image::layer_did_modify_properties(Badge<Layer>, const Layer& layer)
-{
-    auto layer_index = index_of(layer);
-    for (auto* client : m_clients)
-        client->image_did_modify_layer(layer_index);
-
-    did_change();
-}
-
-void Image::did_change()
-{
-    for (auto* client : m_clients)
-        client->image_did_change();
-}
-
-ImageUndoCommand::ImageUndoCommand(Image& image)
-    : m_snapshot(image.take_snapshot())
-    , m_image(image)
-{
-}
-
-void ImageUndoCommand::undo()
-{
-    m_image.restore_snapshot(*m_snapshot);
-}
-
-void ImageUndoCommand::redo()
-{
-    undo();
-}
-
-}
diff --git a/Applications/PixelPaint/Image.h b/Applications/PixelPaint/Image.h
deleted file mode 100644
index 63184b3ad3..0000000000
--- a/Applications/PixelPaint/Image.h
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/HashTable.h>
-#include <AK/NonnullRefPtrVector.h>
-#include <AK/RefCounted.h>
-#include <AK/RefPtr.h>
-#include <AK/Vector.h>
-#include <LibGUI/Command.h>
-#include <LibGUI/Forward.h>
-#include <LibGfx/Forward.h>
-#include <LibGfx/Rect.h>
-#include <LibGfx/Size.h>
-
-namespace PixelPaint {
-
-class Layer;
-
-class ImageClient {
-public:
-    virtual void image_did_add_layer(size_t) { }
-    virtual void image_did_remove_layer(size_t) { }
-    virtual void image_did_modify_layer(size_t) { }
-    virtual void image_did_modify_layer_stack() { }
-    virtual void image_did_change() { }
-    virtual void image_select_layer(Layer*) { }
-};
-
-class Image : public RefCounted<Image> {
-public:
-    static RefPtr<Image> create_with_size(const Gfx::IntSize&);
-    static RefPtr<Image> create_from_file(const String& file_path);
-
-    size_t layer_count() const { return m_layers.size(); }
-    const Layer& layer(size_t index) const { return m_layers.at(index); }
-    Layer& layer(size_t index) { return m_layers.at(index); }
-
-    const Gfx::IntSize& size() const { return m_size; }
-    Gfx::IntRect rect() const { return { {}, m_size }; }
-
-    void add_layer(NonnullRefPtr<Layer>);
-    RefPtr<Image> take_snapshot() const;
-    void restore_snapshot(const Image&);
-
-    void paint_into(GUI::Painter&, const Gfx::IntRect& dest_rect);
-    void save(const String& file_path) const;
-    void export_bmp(const String& file_path);
-
-    void move_layer_to_front(Layer&);
-    void move_layer_to_back(Layer&);
-    void move_layer_up(Layer&);
-    void move_layer_down(Layer&);
-    void change_layer_index(size_t old_index, size_t new_index);
-    void remove_layer(Layer&);
-    void select_layer(Layer*);
-
-    void add_client(ImageClient&);
-    void remove_client(ImageClient&);
-
-    void layer_did_modify_bitmap(Badge<Layer>, const Layer&);
-    void layer_did_modify_properties(Badge<Layer>, const Layer&);
-
-    size_t index_of(const Layer&) const;
-
-private:
-    explicit Image(const Gfx::IntSize&);
-
-    void did_change();
-    void did_modify_layer_stack();
-
-    Gfx::IntSize m_size;
-    NonnullRefPtrVector<Layer> m_layers;
-
-    HashTable<ImageClient*> m_clients;
-};
-
-class ImageUndoCommand : public GUI::Command {
-public:
-    ImageUndoCommand(Image& image);
-
-    virtual void undo() override;
-    virtual void redo() override;
-
-private:
-    RefPtr<Image> m_snapshot;
-    Image& m_image;
-};
-
-}
diff --git a/Applications/PixelPaint/ImageEditor.cpp b/Applications/PixelPaint/ImageEditor.cpp
deleted file mode 100644
index f29551c050..0000000000
--- a/Applications/PixelPaint/ImageEditor.cpp
+++ /dev/null
@@ -1,418 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ImageEditor.h"
-#include "Image.h"
-#include "Layer.h"
-#include "MoveTool.h"
-#include "Tool.h"
-#include <LibGUI/Command.h>
-#include <LibGUI/Painter.h>
-#include <LibGfx/Palette.h>
-#include <LibGfx/Rect.h>
-
-namespace PixelPaint {
-
-ImageEditor::ImageEditor()
-    : m_undo_stack(make<GUI::UndoStack>())
-{
-    set_focus_policy(GUI::FocusPolicy::StrongFocus);
-}
-
-ImageEditor::~ImageEditor()
-{
-    if (m_image)
-        m_image->remove_client(*this);
-}
-
-void ImageEditor::set_image(RefPtr<Image> image)
-{
-    if (m_image)
-        m_image->remove_client(*this);
-
-    m_image = move(image);
-    m_active_layer = nullptr;
-    m_undo_stack = make<GUI::UndoStack>();
-    m_undo_stack->push(make<ImageUndoCommand>(*m_image));
-    update();
-    relayout();
-
-    if (m_image)
-        m_image->add_client(*this);
-}
-
-void ImageEditor::did_complete_action()
-{
-    if (!m_image)
-        return;
-    m_undo_stack->finalize_current_combo();
-    m_undo_stack->push(make<ImageUndoCommand>(*m_image));
-}
-
-bool ImageEditor::undo()
-{
-    if (!m_image)
-        return false;
-    if (m_undo_stack->can_undo()) {
-        m_undo_stack->undo();
-        layers_did_change();
-        return true;
-    }
-    return false;
-}
-
-bool ImageEditor::redo()
-{
-    if (!m_image)
-        return false;
-    if (m_undo_stack->can_redo()) {
-        m_undo_stack->redo();
-        layers_did_change();
-        return true;
-    }
-    return false;
-}
-
-void ImageEditor::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(event.rect());
-    painter.add_clip_rect(frame_inner_rect());
-
-    Gfx::StylePainter::paint_transparency_grid(painter, rect(), palette());
-
-    if (m_image) {
-        painter.draw_rect(m_editor_image_rect.inflated(2, 2), Color::Black);
-        m_image->paint_into(painter, m_editor_image_rect);
-    }
-
-    if (m_active_layer) {
-        painter.draw_rect(enclosing_int_rect(image_rect_to_editor_rect(m_active_layer->relative_rect())).inflated(2, 2), Color::Black);
-    }
-}
-
-Gfx::FloatRect ImageEditor::layer_rect_to_editor_rect(const Layer& layer, const Gfx::IntRect& layer_rect) const
-{
-    return image_rect_to_editor_rect(layer_rect.translated(layer.location()));
-}
-
-Gfx::FloatRect ImageEditor::image_rect_to_editor_rect(const Gfx::IntRect& image_rect) const
-{
-    Gfx::FloatRect editor_rect;
-    editor_rect.set_location(image_position_to_editor_position(image_rect.location()));
-    editor_rect.set_width((float)image_rect.width() * m_scale);
-    editor_rect.set_height((float)image_rect.height() * m_scale);
-    return editor_rect;
-}
-
-Gfx::FloatRect ImageEditor::editor_rect_to_image_rect(const Gfx::IntRect& editor_rect) const
-{
-    Gfx::FloatRect image_rect;
-    image_rect.set_location(editor_position_to_image_position(editor_rect.location()));
-    image_rect.set_width((float)editor_rect.width() / m_scale);
-    image_rect.set_height((float)editor_rect.height() / m_scale);
-    return image_rect;
-}
-
-Gfx::FloatPoint ImageEditor::layer_position_to_editor_position(const Layer& layer, const Gfx::IntPoint& layer_position) const
-{
-    return image_position_to_editor_position(layer_position.translated(layer.location()));
-}
-
-Gfx::FloatPoint ImageEditor::image_position_to_editor_position(const Gfx::IntPoint& image_position) const
-{
-    Gfx::FloatPoint editor_position;
-    editor_position.set_x(m_editor_image_rect.x() + ((float)image_position.x() * m_scale));
-    editor_position.set_y(m_editor_image_rect.y() + ((float)image_position.y() * m_scale));
-    return editor_position;
-}
-
-Gfx::FloatPoint ImageEditor::editor_position_to_image_position(const Gfx::IntPoint& editor_position) const
-{
-    Gfx::FloatPoint image_position;
-    image_position.set_x(((float)editor_position.x() - m_editor_image_rect.x()) / m_scale);
-    image_position.set_y(((float)editor_position.y() - m_editor_image_rect.y()) / m_scale);
-    return image_position;
-}
-
-void ImageEditor::second_paint_event(GUI::PaintEvent& event)
-{
-    if (m_active_tool && m_active_layer)
-        m_active_tool->on_second_paint(*m_active_layer, event);
-}
-
-GUI::MouseEvent ImageEditor::event_with_pan_and_scale_applied(const GUI::MouseEvent& event) const
-{
-    auto image_position = editor_position_to_image_position(event.position());
-    return {
-        static_cast<GUI::Event::Type>(event.type()),
-        Gfx::IntPoint(image_position.x(), image_position.y()),
-        event.buttons(),
-        event.button(),
-        event.modifiers(),
-        event.wheel_delta()
-    };
-}
-
-GUI::MouseEvent ImageEditor::event_adjusted_for_layer(const GUI::MouseEvent& event, const Layer& layer) const
-{
-    auto image_position = editor_position_to_image_position(event.position());
-    image_position.move_by(-layer.location().x(), -layer.location().y());
-    return {
-        static_cast<GUI::Event::Type>(event.type()),
-        Gfx::IntPoint(image_position.x(), image_position.y()),
-        event.buttons(),
-        event.button(),
-        event.modifiers(),
-        event.wheel_delta()
-    };
-}
-
-void ImageEditor::mousedown_event(GUI::MouseEvent& event)
-{
-    if (event.button() == GUI::MouseButton::Middle) {
-        m_click_position = event.position();
-        m_saved_pan_origin = m_pan_origin;
-        return;
-    }
-
-    if (!m_active_tool)
-        return;
-
-    if (is<MoveTool>(*m_active_tool)) {
-        if (auto* other_layer = layer_at_editor_position(event.position())) {
-            set_active_layer(other_layer);
-        }
-    }
-
-    if (!m_active_layer)
-        return;
-
-    auto layer_event = event_adjusted_for_layer(event, *m_active_layer);
-    auto image_event = event_with_pan_and_scale_applied(event);
-    m_active_tool->on_mousedown(*m_active_layer, layer_event, image_event);
-}
-
-void ImageEditor::mousemove_event(GUI::MouseEvent& event)
-{
-    if (event.buttons() & GUI::MouseButton::Middle) {
-        auto delta = event.position() - m_click_position;
-        m_pan_origin = m_saved_pan_origin.translated(
-            -delta.x() / m_scale,
-            -delta.y() / m_scale);
-
-        relayout();
-        return;
-    }
-
-    if (!m_active_layer || !m_active_tool)
-        return;
-    auto layer_event = event_adjusted_for_layer(event, *m_active_layer);
-    auto image_event = event_with_pan_and_scale_applied(event);
-
-    m_active_tool->on_mousemove(*m_active_layer, layer_event, image_event);
-}
-
-void ImageEditor::mouseup_event(GUI::MouseEvent& event)
-{
-    if (!m_active_layer || !m_active_tool)
-        return;
-    auto layer_event = event_adjusted_for_layer(event, *m_active_layer);
-    auto image_event = event_with_pan_and_scale_applied(event);
-    m_active_tool->on_mouseup(*m_active_layer, layer_event, image_event);
-}
-
-void ImageEditor::mousewheel_event(GUI::MouseEvent& event)
-{
-    auto old_scale = m_scale;
-
-    m_scale += -event.wheel_delta() * 0.1f;
-    if (m_scale < 0.1f)
-        m_scale = 0.1f;
-    if (m_scale > 100.0f)
-        m_scale = 100.0f;
-
-    auto focus_point = Gfx::FloatPoint(
-        m_pan_origin.x() - ((float)event.x() - (float)width() / 2.0) / old_scale,
-        m_pan_origin.y() - ((float)event.y() - (float)height() / 2.0) / old_scale);
-
-    m_pan_origin = Gfx::FloatPoint(
-        focus_point.x() - m_scale / old_scale * (focus_point.x() - m_pan_origin.x()),
-        focus_point.y() - m_scale / old_scale * (focus_point.y() - m_pan_origin.y()));
-
-    if (old_scale != m_scale)
-        relayout();
-}
-
-void ImageEditor::context_menu_event(GUI::ContextMenuEvent& event)
-{
-    if (!m_active_layer || !m_active_tool)
-        return;
-    m_active_tool->on_context_menu(*m_active_layer, event);
-}
-
-void ImageEditor::resize_event(GUI::ResizeEvent& event)
-{
-    relayout();
-    GUI::Frame::resize_event(event);
-}
-
-void ImageEditor::keydown_event(GUI::KeyEvent& event)
-{
-    if (m_active_tool)
-        m_active_tool->on_keydown(event);
-}
-
-void ImageEditor::keyup_event(GUI::KeyEvent& event)
-{
-    if (m_active_tool)
-        m_active_tool->on_keyup(event);
-}
-
-void ImageEditor::set_active_layer(Layer* layer)
-{
-    if (m_active_layer == layer)
-        return;
-    m_active_layer = layer;
-
-    if (m_active_layer) {
-        size_t index = 0;
-        for (; index < m_image->layer_count(); ++index) {
-            if (&m_image->layer(index) == layer)
-                break;
-        }
-        if (on_active_layer_change)
-            on_active_layer_change(layer);
-    } else {
-        if (on_active_layer_change)
-            on_active_layer_change({});
-    }
-
-    layers_did_change();
-}
-
-void ImageEditor::set_active_tool(Tool* tool)
-{
-    if (m_active_tool == tool)
-        return;
-
-    if (m_active_tool)
-        m_active_tool->clear();
-
-    m_active_tool = tool;
-
-    if (m_active_tool)
-        m_active_tool->setup(*this);
-}
-
-void ImageEditor::layers_did_change()
-{
-    update();
-}
-
-Color ImageEditor::color_for(GUI::MouseButton button) const
-{
-    if (button == GUI::MouseButton::Left)
-        return m_primary_color;
-    if (button == GUI::MouseButton::Right)
-        return m_secondary_color;
-    ASSERT_NOT_REACHED();
-}
-
-Color ImageEditor::color_for(const GUI::MouseEvent& event) const
-{
-    if (event.buttons() & GUI::MouseButton::Left)
-        return m_primary_color;
-    if (event.buttons() & GUI::MouseButton::Right)
-        return m_secondary_color;
-    ASSERT_NOT_REACHED();
-}
-
-void ImageEditor::set_primary_color(Color color)
-{
-    if (m_primary_color == color)
-        return;
-    m_primary_color = color;
-    if (on_primary_color_change)
-        on_primary_color_change(color);
-}
-
-void ImageEditor::set_secondary_color(Color color)
-{
-    if (m_secondary_color == color)
-        return;
-    m_secondary_color = color;
-    if (on_secondary_color_change)
-        on_secondary_color_change(color);
-}
-
-Layer* ImageEditor::layer_at_editor_position(const Gfx::IntPoint& editor_position)
-{
-    if (!m_image)
-        return nullptr;
-    auto image_position = editor_position_to_image_position(editor_position);
-    for (ssize_t i = m_image->layer_count() - 1; i >= 0; --i) {
-        auto& layer = m_image->layer(i);
-        if (!layer.is_visible())
-            continue;
-        if (layer.relative_rect().contains(Gfx::IntPoint(image_position.x(), image_position.y())))
-            return const_cast<Layer*>(&layer);
-    }
-    return nullptr;
-}
-
-void ImageEditor::relayout()
-{
-    if (!image())
-        return;
-    auto& image = *this->image();
-
-    Gfx::IntSize new_size;
-    new_size.set_width(image.size().width() * m_scale);
-    new_size.set_height(image.size().height() * m_scale);
-    m_editor_image_rect.set_size(new_size);
-
-    Gfx::IntPoint new_location;
-    new_location.set_x((width() / 2) - (new_size.width() / 2) - (m_pan_origin.x() * m_scale));
-    new_location.set_y((height() / 2) - (new_size.height() / 2) - (m_pan_origin.y() * m_scale));
-    m_editor_image_rect.set_location(new_location);
-
-    update();
-}
-
-void ImageEditor::image_did_change()
-{
-    update();
-}
-
-void ImageEditor::image_select_layer(Layer* layer)
-{
-    set_active_layer(layer);
-}
-
-}
diff --git a/Applications/PixelPaint/ImageEditor.h b/Applications/PixelPaint/ImageEditor.h
deleted file mode 100644
index b6cdc8fb62..0000000000
--- a/Applications/PixelPaint/ImageEditor.h
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Image.h"
-#include <LibGUI/Frame.h>
-#include <LibGUI/UndoStack.h>
-#include <LibGfx/Point.h>
-
-namespace PixelPaint {
-
-class Layer;
-class Tool;
-
-class ImageEditor final
-    : public GUI::Frame
-    , public ImageClient {
-    C_OBJECT(ImageEditor);
-
-public:
-    virtual ~ImageEditor() override;
-
-    const Image* image() const { return m_image; }
-    Image* image() { return m_image; }
-
-    void set_image(RefPtr<Image>);
-
-    Layer* active_layer() { return m_active_layer; }
-    void set_active_layer(Layer*);
-
-    Tool* active_tool() { return m_active_tool; }
-    void set_active_tool(Tool*);
-
-    void did_complete_action();
-    bool undo();
-    bool redo();
-
-    void layers_did_change();
-
-    Layer* layer_at_editor_position(const Gfx::IntPoint&);
-
-    Color primary_color() const { return m_primary_color; }
-    void set_primary_color(Color);
-
-    Color secondary_color() const { return m_secondary_color; }
-    void set_secondary_color(Color);
-
-    Color color_for(const GUI::MouseEvent&) const;
-    Color color_for(GUI::MouseButton) const;
-
-    Function<void(Color)> on_primary_color_change;
-    Function<void(Color)> on_secondary_color_change;
-
-    Function<void(Layer*)> on_active_layer_change;
-
-    Gfx::FloatRect layer_rect_to_editor_rect(const Layer&, const Gfx::IntRect&) const;
-    Gfx::FloatRect image_rect_to_editor_rect(const Gfx::IntRect&) const;
-    Gfx::FloatRect editor_rect_to_image_rect(const Gfx::IntRect&) const;
-    Gfx::FloatPoint layer_position_to_editor_position(const Layer&, const Gfx::IntPoint&) const;
-    Gfx::FloatPoint image_position_to_editor_position(const Gfx::IntPoint&) const;
-    Gfx::FloatPoint editor_position_to_image_position(const Gfx::IntPoint&) const;
-
-private:
-    ImageEditor();
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void second_paint_event(GUI::PaintEvent&) override;
-    virtual void mousedown_event(GUI::MouseEvent&) override;
-    virtual void mousemove_event(GUI::MouseEvent&) override;
-    virtual void mouseup_event(GUI::MouseEvent&) override;
-    virtual void mousewheel_event(GUI::MouseEvent&) override;
-    virtual void keydown_event(GUI::KeyEvent&) override;
-    virtual void keyup_event(GUI::KeyEvent&) override;
-    virtual void context_menu_event(GUI::ContextMenuEvent&) override;
-    virtual void resize_event(GUI::ResizeEvent&) override;
-
-    virtual void image_did_change() override;
-    virtual void image_select_layer(Layer*) override;
-
-    GUI::MouseEvent event_adjusted_for_layer(const GUI::MouseEvent&, const Layer&) const;
-    GUI::MouseEvent event_with_pan_and_scale_applied(const GUI::MouseEvent&) const;
-
-    void relayout();
-
-    RefPtr<Image> m_image;
-    RefPtr<Layer> m_active_layer;
-    OwnPtr<GUI::UndoStack> m_undo_stack;
-
-    Tool* m_active_tool { nullptr };
-
-    Color m_primary_color { Color::Black };
-    Color m_secondary_color { Color::White };
-
-    Gfx::IntRect m_editor_image_rect;
-    float m_scale { 1 };
-    Gfx::FloatPoint m_pan_origin;
-    Gfx::FloatPoint m_saved_pan_origin;
-    Gfx::IntPoint m_click_position;
-};
-
-}
diff --git a/Applications/PixelPaint/Layer.cpp b/Applications/PixelPaint/Layer.cpp
deleted file mode 100644
index e607113c32..0000000000
--- a/Applications/PixelPaint/Layer.cpp
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Layer.h"
-#include "Image.h"
-#include <LibGfx/Bitmap.h>
-
-namespace PixelPaint {
-
-RefPtr<Layer> Layer::create_with_size(Image& image, const Gfx::IntSize& size, const String& name)
-{
-    if (size.is_empty())
-        return nullptr;
-
-    if (size.width() > 16384 || size.height() > 16384)
-        return nullptr;
-
-    return adopt(*new Layer(image, size, name));
-}
-
-RefPtr<Layer> Layer::create_with_bitmap(Image& image, const Gfx::Bitmap& bitmap, const String& name)
-{
-    if (bitmap.size().is_empty())
-        return nullptr;
-
-    if (bitmap.size().width() > 16384 || bitmap.size().height() > 16384)
-        return nullptr;
-
-    return adopt(*new Layer(image, bitmap, name));
-}
-
-RefPtr<Layer> Layer::create_snapshot(Image& image, const Layer& layer)
-{
-    auto snapshot = create_with_bitmap(image, *layer.bitmap().clone(), layer.name());
-    snapshot->set_opacity_percent(layer.opacity_percent());
-    snapshot->set_visible(layer.is_visible());
-    snapshot->set_selected(layer.is_selected());
-    snapshot->set_location(layer.location());
-    return snapshot;
-}
-
-Layer::Layer(Image& image, const Gfx::IntSize& size, const String& name)
-    : m_image(image)
-    , m_name(name)
-{
-    m_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGBA32, size);
-}
-
-Layer::Layer(Image& image, const Gfx::Bitmap& bitmap, const String& name)
-    : m_image(image)
-    , m_name(name)
-    , m_bitmap(bitmap)
-{
-}
-
-void Layer::did_modify_bitmap(Image& image)
-{
-    image.layer_did_modify_bitmap({}, *this);
-}
-
-void Layer::set_visible(bool visible)
-{
-    if (m_visible == visible)
-        return;
-    m_visible = visible;
-    m_image.layer_did_modify_properties({}, *this);
-}
-
-void Layer::set_opacity_percent(int opacity_percent)
-{
-    if (m_opacity_percent == opacity_percent)
-        return;
-    m_opacity_percent = opacity_percent;
-    m_image.layer_did_modify_properties({}, *this);
-}
-
-void Layer::set_name(const String& name)
-{
-    if (m_name == name)
-        return;
-    m_name = name;
-    m_image.layer_did_modify_properties({}, *this);
-}
-
-}
diff --git a/Applications/PixelPaint/Layer.h b/Applications/PixelPaint/Layer.h
deleted file mode 100644
index b3b7d4d603..0000000000
--- a/Applications/PixelPaint/Layer.h
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Noncopyable.h>
-#include <AK/RefCounted.h>
-#include <AK/String.h>
-#include <AK/Weakable.h>
-#include <LibGfx/Bitmap.h>
-
-namespace PixelPaint {
-
-class Image;
-
-class Layer
-    : public RefCounted<Layer>
-    , public Weakable<Layer> {
-
-    AK_MAKE_NONCOPYABLE(Layer);
-    AK_MAKE_NONMOVABLE(Layer);
-
-public:
-    static RefPtr<Layer> create_with_size(Image&, const Gfx::IntSize&, const String& name);
-    static RefPtr<Layer> create_with_bitmap(Image&, const Gfx::Bitmap&, const String& name);
-    static RefPtr<Layer> create_snapshot(Image&, const Layer&);
-
-    ~Layer() { }
-
-    const Gfx::IntPoint& location() const { return m_location; }
-    void set_location(const Gfx::IntPoint& location) { m_location = location; }
-
-    const Gfx::Bitmap& bitmap() const { return *m_bitmap; }
-    Gfx::Bitmap& bitmap() { return *m_bitmap; }
-    Gfx::IntSize size() const { return bitmap().size(); }
-
-    Gfx::IntRect relative_rect() const { return { location(), size() }; }
-    Gfx::IntRect rect() const { return { {}, size() }; }
-
-    const String& name() const { return m_name; }
-    void set_name(const String&);
-
-    void set_bitmap(Gfx::Bitmap& bitmap) { m_bitmap = bitmap; }
-
-    void did_modify_bitmap(Image&);
-
-    void set_selected(bool selected) { m_selected = selected; }
-    bool is_selected() const { return m_selected; }
-
-    bool is_visible() const { return m_visible; }
-    void set_visible(bool visible);
-
-    int opacity_percent() const { return m_opacity_percent; }
-    void set_opacity_percent(int);
-
-private:
-    Layer(Image&, const Gfx::IntSize&, const String& name);
-    Layer(Image&, const Gfx::Bitmap&, const String& name);
-
-    Image& m_image;
-
-    String m_name;
-    Gfx::IntPoint m_location;
-    RefPtr<Gfx::Bitmap> m_bitmap;
-
-    bool m_selected { false };
-    bool m_visible { true };
-
-    int m_opacity_percent { 100 };
-};
-
-}
diff --git a/Applications/PixelPaint/LayerListWidget.cpp b/Applications/PixelPaint/LayerListWidget.cpp
deleted file mode 100644
index 756772bb87..0000000000
--- a/Applications/PixelPaint/LayerListWidget.cpp
+++ /dev/null
@@ -1,285 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "LayerListWidget.h"
-#include "Image.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <LibGUI/Painter.h>
-#include <LibGfx/Palette.h>
-
-namespace PixelPaint {
-
-LayerListWidget::LayerListWidget()
-{
-}
-
-LayerListWidget::~LayerListWidget()
-{
-    if (m_image)
-        m_image->remove_client(*this);
-}
-
-void LayerListWidget::set_image(Image* image)
-{
-    if (m_image == image)
-        return;
-    if (m_image)
-        m_image->remove_client(*this);
-    m_image = image;
-    if (m_image)
-        m_image->add_client(*this);
-
-    rebuild_gadgets();
-}
-
-void LayerListWidget::rebuild_gadgets()
-{
-    m_gadgets.clear();
-    if (m_image) {
-        for (size_t layer_index = 0; layer_index < m_image->layer_count(); ++layer_index) {
-            m_gadgets.append({ layer_index, {}, {}, false, {} });
-        }
-    }
-    relayout_gadgets();
-}
-
-void LayerListWidget::resize_event(GUI::ResizeEvent& event)
-{
-    Widget::resize_event(event);
-    relayout_gadgets();
-}
-
-void LayerListWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(event.rect());
-
-    painter.fill_rect(event.rect(), palette().button());
-
-    if (!m_image)
-        return;
-
-    painter.fill_rect(event.rect(), palette().button());
-
-    auto paint_gadget = [&](auto& gadget) {
-        auto& layer = m_image->layer(gadget.layer_index);
-
-        auto adjusted_rect = gadget.rect;
-
-        if (gadget.is_moving) {
-            adjusted_rect.move_by(0, gadget.movement_delta.y());
-        }
-
-        if (gadget.is_moving) {
-            painter.fill_rect(adjusted_rect, palette().selection().lightened(1.5f));
-        } else if (layer.is_selected()) {
-            painter.fill_rect(adjusted_rect, palette().selection());
-        }
-
-        painter.draw_rect(adjusted_rect, Color::Black);
-
-        Gfx::IntRect thumbnail_rect { adjusted_rect.x(), adjusted_rect.y(), adjusted_rect.height(), adjusted_rect.height() };
-        thumbnail_rect.shrink(8, 8);
-        painter.draw_scaled_bitmap(thumbnail_rect, layer.bitmap(), layer.bitmap().rect());
-
-        Gfx::IntRect text_rect { thumbnail_rect.right() + 10, adjusted_rect.y(), adjusted_rect.width(), adjusted_rect.height() };
-        text_rect.intersect(adjusted_rect);
-
-        painter.draw_text(text_rect, layer.name(), Gfx::TextAlignment::CenterLeft, layer.is_selected() ? palette().selection_text() : palette().button_text());
-    };
-
-    for (auto& gadget : m_gadgets) {
-        if (!gadget.is_moving)
-            paint_gadget(gadget);
-    }
-
-    if (m_moving_gadget_index.has_value())
-        paint_gadget(m_gadgets[m_moving_gadget_index.value()]);
-}
-
-Optional<size_t> LayerListWidget::gadget_at(const Gfx::IntPoint& position)
-{
-    for (size_t i = 0; i < m_gadgets.size(); ++i) {
-        if (m_gadgets[i].rect.contains(position))
-            return i;
-    }
-    return {};
-}
-
-void LayerListWidget::mousedown_event(GUI::MouseEvent& event)
-{
-    if (!m_image)
-        return;
-    if (event.button() != GUI::MouseButton::Left)
-        return;
-    auto gadget_index = gadget_at(event.position());
-    if (!gadget_index.has_value()) {
-        if (on_layer_select)
-            on_layer_select(nullptr);
-        return;
-    }
-    m_moving_gadget_index = gadget_index;
-    m_moving_event_origin = event.position();
-    auto& gadget = m_gadgets[m_moving_gadget_index.value()];
-    auto& layer = m_image->layer(gadget_index.value());
-    set_selected_layer(&layer);
-    gadget.is_moving = true;
-    gadget.movement_delta = {};
-    update();
-}
-
-void LayerListWidget::mousemove_event(GUI::MouseEvent& event)
-{
-    if (!m_image)
-        return;
-    if (!m_moving_gadget_index.has_value())
-        return;
-
-    auto delta = event.position() - m_moving_event_origin;
-    auto& gadget = m_gadgets[m_moving_gadget_index.value()];
-    ASSERT(gadget.is_moving);
-    gadget.movement_delta = delta;
-    relayout_gadgets();
-}
-
-void LayerListWidget::mouseup_event(GUI::MouseEvent& event)
-{
-    if (!m_image)
-        return;
-    if (event.button() != GUI::MouseButton::Left)
-        return;
-    if (!m_moving_gadget_index.has_value())
-        return;
-
-    size_t old_index = m_moving_gadget_index.value();
-    size_t new_index = hole_index_during_move();
-    if (new_index >= m_image->layer_count())
-        new_index = m_image->layer_count() - 1;
-
-    m_moving_gadget_index = {};
-    m_image->change_layer_index(old_index, new_index);
-}
-
-void LayerListWidget::image_did_add_layer(size_t layer_index)
-{
-    if (m_moving_gadget_index.has_value()) {
-        m_gadgets[m_moving_gadget_index.value()].is_moving = false;
-        m_moving_gadget_index = {};
-    }
-    Gadget gadget { layer_index, {}, {}, false, {} };
-    m_gadgets.insert(layer_index, move(gadget));
-    relayout_gadgets();
-}
-
-void LayerListWidget::image_did_remove_layer(size_t layer_index)
-{
-    if (m_moving_gadget_index.has_value()) {
-        m_gadgets[m_moving_gadget_index.value()].is_moving = false;
-        m_moving_gadget_index = {};
-    }
-    m_gadgets.remove(layer_index);
-    relayout_gadgets();
-}
-
-void LayerListWidget::image_did_modify_layer(size_t layer_index)
-{
-    update(m_gadgets[layer_index].rect);
-}
-
-void LayerListWidget::image_did_modify_layer_stack()
-{
-    rebuild_gadgets();
-}
-
-static constexpr int gadget_height = 30;
-static constexpr int gadget_spacing = 1;
-static constexpr int vertical_step = gadget_height + gadget_spacing;
-
-size_t LayerListWidget::hole_index_during_move() const
-{
-    ASSERT(is_moving_gadget());
-    auto& moving_gadget = m_gadgets[m_moving_gadget_index.value()];
-    int center_y_of_moving_gadget = moving_gadget.rect.translated(0, moving_gadget.movement_delta.y()).center().y();
-    return center_y_of_moving_gadget / vertical_step;
-}
-
-void LayerListWidget::select_bottom_layer()
-{
-    if (!m_image || !m_image->layer_count())
-        return;
-    set_selected_layer(&m_image->layer(0));
-}
-
-void LayerListWidget::select_top_layer()
-{
-    if (!m_image || !m_image->layer_count())
-        return;
-    set_selected_layer(&m_image->layer(m_image->layer_count() - 1));
-}
-
-void LayerListWidget::move_selection(int delta)
-{
-    if (!m_image || !m_image->layer_count())
-        return;
-    int new_layer_index = min(max(0, (int)m_image->layer_count() + delta), (int)m_image->layer_count() - 1);
-    set_selected_layer(&m_image->layer(new_layer_index));
-}
-
-void LayerListWidget::relayout_gadgets()
-{
-    int y = 0;
-
-    Optional<size_t> hole_index;
-    if (is_moving_gadget())
-        hole_index = hole_index_during_move();
-
-    size_t index = 0;
-    for (auto& gadget : m_gadgets) {
-        if (gadget.is_moving)
-            continue;
-        if (hole_index.has_value() && index == hole_index.value())
-            y += vertical_step;
-        gadget.rect = { 0, y, width(), gadget_height };
-        y += vertical_step;
-        ++index;
-    }
-
-    update();
-}
-
-void LayerListWidget::set_selected_layer(Layer* layer)
-{
-    if (!m_image)
-        return;
-    for (size_t i = 0; i < m_image->layer_count(); ++i)
-        m_image->layer(i).set_selected(layer == &m_image->layer(i));
-    if (on_layer_select)
-        on_layer_select(layer);
-    update();
-}
-
-}
diff --git a/Applications/PixelPaint/LayerListWidget.h b/Applications/PixelPaint/LayerListWidget.h
deleted file mode 100644
index 9550913b8e..0000000000
--- a/Applications/PixelPaint/LayerListWidget.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Image.h"
-#include <LibGUI/Widget.h>
-
-namespace PixelPaint {
-
-class LayerListWidget final
-    : public GUI::Widget
-    , ImageClient {
-    C_OBJECT(LayerListWidget);
-
-public:
-    virtual ~LayerListWidget() override;
-
-    void set_image(Image*);
-
-    void set_selected_layer(Layer*);
-    Function<void(Layer*)> on_layer_select;
-
-    void select_bottom_layer();
-    void select_top_layer();
-    void move_selection(int delta);
-
-private:
-    explicit LayerListWidget();
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void mousedown_event(GUI::MouseEvent&) override;
-    virtual void mousemove_event(GUI::MouseEvent&) override;
-    virtual void mouseup_event(GUI::MouseEvent&) override;
-    virtual void resize_event(GUI::ResizeEvent&) override;
-
-    virtual void image_did_add_layer(size_t) override;
-    virtual void image_did_remove_layer(size_t) override;
-    virtual void image_did_modify_layer(size_t) override;
-    virtual void image_did_modify_layer_stack() override;
-
-    void rebuild_gadgets();
-    void relayout_gadgets();
-
-    size_t hole_index_during_move() const;
-
-    struct Gadget {
-        size_t layer_index { 0 };
-        Gfx::IntRect rect;
-        Gfx::IntRect temporary_rect_during_move;
-        bool is_moving { false };
-        Gfx::IntPoint movement_delta;
-    };
-
-    bool is_moving_gadget() const { return m_moving_gadget_index.has_value(); }
-
-    Optional<size_t> gadget_at(const Gfx::IntPoint&);
-
-    Vector<Gadget> m_gadgets;
-    RefPtr<Image> m_image;
-
-    Optional<size_t> m_moving_gadget_index;
-    Gfx::IntPoint m_moving_event_origin;
-};
-
-}
diff --git a/Applications/PixelPaint/LayerPropertiesWidget.cpp b/Applications/PixelPaint/LayerPropertiesWidget.cpp
deleted file mode 100644
index cfdee65c0a..0000000000
--- a/Applications/PixelPaint/LayerPropertiesWidget.cpp
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "LayerPropertiesWidget.h"
-#include "Layer.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/CheckBox.h>
-#include <LibGUI/GroupBox.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/OpacitySlider.h>
-#include <LibGUI/TextBox.h>
-#include <LibGfx/Font.h>
-
-namespace PixelPaint {
-
-LayerPropertiesWidget::LayerPropertiesWidget()
-{
-    set_layout<GUI::VerticalBoxLayout>();
-
-    auto& group_box = add<GUI::GroupBox>("Layer properties");
-    auto& layout = group_box.set_layout<GUI::VerticalBoxLayout>();
-
-    layout.set_margins({ 10, 20, 10, 10 });
-
-    auto& name_container = group_box.add<GUI::Widget>();
-    name_container.set_fixed_height(20);
-    name_container.set_layout<GUI::HorizontalBoxLayout>();
-
-    auto& name_label = name_container.add<GUI::Label>("Name:");
-    name_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    name_label.set_fixed_size(80, 20);
-
-    m_name_textbox = name_container.add<GUI::TextBox>();
-    m_name_textbox->set_fixed_height(20);
-    m_name_textbox->on_change = [this] {
-        if (m_layer)
-            m_layer->set_name(m_name_textbox->text());
-    };
-
-    auto& opacity_container = group_box.add<GUI::Widget>();
-    opacity_container.set_fixed_height(20);
-    opacity_container.set_layout<GUI::HorizontalBoxLayout>();
-
-    auto& opacity_label = opacity_container.add<GUI::Label>("Opacity:");
-    opacity_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    opacity_label.set_fixed_size(80, 20);
-
-    m_opacity_slider = opacity_container.add<GUI::OpacitySlider>();
-    m_opacity_slider->set_range(0, 100);
-    m_opacity_slider->on_change = [this](int value) {
-        if (m_layer)
-            m_layer->set_opacity_percent(value);
-    };
-
-    m_visibility_checkbox = group_box.add<GUI::CheckBox>("Visible");
-    m_visibility_checkbox->set_fixed_height(20);
-    m_visibility_checkbox->on_checked = [this](bool checked) {
-        if (m_layer)
-            m_layer->set_visible(checked);
-    };
-}
-
-LayerPropertiesWidget::~LayerPropertiesWidget()
-{
-}
-
-void LayerPropertiesWidget::set_layer(Layer* layer)
-{
-    if (m_layer == layer)
-        return;
-
-    if (layer) {
-        m_layer = layer->make_weak_ptr();
-        m_name_textbox->set_text(layer->name());
-        m_opacity_slider->set_value(layer->opacity_percent());
-        m_visibility_checkbox->set_checked(layer->is_visible());
-        set_enabled(true);
-    } else {
-        m_layer = nullptr;
-        set_enabled(false);
-    }
-}
-
-}
diff --git a/Applications/PixelPaint/LayerPropertiesWidget.h b/Applications/PixelPaint/LayerPropertiesWidget.h
deleted file mode 100644
index e07e02ec93..0000000000
--- a/Applications/PixelPaint/LayerPropertiesWidget.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Widget.h>
-
-namespace PixelPaint {
-
-class Layer;
-
-class LayerPropertiesWidget final : public GUI::Widget {
-    C_OBJECT(LayerPropertiesWidget);
-
-public:
-    virtual ~LayerPropertiesWidget() override;
-
-    void set_layer(Layer*);
-
-private:
-    LayerPropertiesWidget();
-
-    RefPtr<GUI::CheckBox> m_visibility_checkbox;
-    RefPtr<GUI::OpacitySlider> m_opacity_slider;
-    RefPtr<GUI::TextBox> m_name_textbox;
-
-    WeakPtr<Layer> m_layer;
-};
-
-}
diff --git a/Applications/PixelPaint/LineTool.cpp b/Applications/PixelPaint/LineTool.cpp
deleted file mode 100644
index 7c3e37e836..0000000000
--- a/Applications/PixelPaint/LineTool.cpp
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "LineTool.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Painter.h>
-#include <math.h>
-
-namespace PixelPaint {
-
-static Gfx::IntPoint constrain_line_angle(const Gfx::IntPoint& start_pos, const Gfx::IntPoint& end_pos, float angle_increment)
-{
-    float current_angle = atan2(end_pos.y() - start_pos.y(), end_pos.x() - start_pos.x()) + M_PI * 2.;
-
-    float constrained_angle = ((int)((current_angle + angle_increment / 2.) / angle_increment)) * angle_increment;
-
-    auto diff = end_pos - start_pos;
-    float line_length = sqrt(diff.x() * diff.x() + diff.y() * diff.y());
-
-    return { start_pos.x() + (int)(cos(constrained_angle) * line_length),
-        start_pos.y() + (int)(sin(constrained_angle) * line_length) };
-}
-
-LineTool::LineTool()
-{
-}
-
-LineTool::~LineTool()
-{
-}
-
-void LineTool::on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent&)
-{
-    if (layer_event.button() != GUI::MouseButton::Left && layer_event.button() != GUI::MouseButton::Right)
-        return;
-
-    if (m_drawing_button != GUI::MouseButton::None)
-        return;
-
-    m_drawing_button = layer_event.button();
-
-    m_line_start_position = layer_event.position();
-    m_line_end_position = layer_event.position();
-
-    m_editor->update();
-}
-
-void LineTool::on_mouseup(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() == m_drawing_button) {
-        GUI::Painter painter(layer.bitmap());
-        painter.draw_line(m_line_start_position, m_line_end_position, m_editor->color_for(m_drawing_button), m_thickness);
-        m_drawing_button = GUI::MouseButton::None;
-        layer.did_modify_bitmap(*m_editor->image());
-        m_editor->did_complete_action();
-    }
-}
-
-void LineTool::on_mousemove(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent&)
-{
-    if (m_drawing_button == GUI::MouseButton::None)
-        return;
-
-    if (!m_constrain_angle) {
-        m_line_end_position = layer_event.position();
-    } else {
-        const float ANGLE_STEP = M_PI / 8.0f;
-        m_line_end_position = constrain_line_angle(m_line_start_position, layer_event.position(), ANGLE_STEP);
-    }
-    m_editor->update();
-}
-
-void LineTool::on_second_paint(const Layer& layer, GUI::PaintEvent& event)
-{
-    if (m_drawing_button == GUI::MouseButton::None)
-        return;
-
-    GUI::Painter painter(*m_editor);
-    painter.add_clip_rect(event.rect());
-    auto preview_start = m_editor->layer_position_to_editor_position(layer, m_line_start_position).to_type<int>();
-    auto preview_end = m_editor->layer_position_to_editor_position(layer, m_line_end_position).to_type<int>();
-    painter.draw_line(preview_start, preview_end, m_editor->color_for(m_drawing_button), m_thickness);
-}
-
-void LineTool::on_keydown(GUI::KeyEvent& event)
-{
-    if (event.key() == Key_Escape && m_drawing_button != GUI::MouseButton::None) {
-        m_drawing_button = GUI::MouseButton::None;
-        m_editor->update();
-        event.accept();
-    }
-
-    if (event.key() == Key_Shift) {
-        m_constrain_angle = true;
-        m_editor->update();
-        event.accept();
-    }
-}
-
-void LineTool::on_keyup(GUI::KeyEvent& event)
-{
-    if (event.key() == Key_Shift) {
-        m_constrain_angle = false;
-        m_editor->update();
-        event.accept();
-    }
-}
-
-void LineTool::on_tool_button_contextmenu(GUI::ContextMenuEvent& event)
-{
-    if (!m_context_menu) {
-        m_context_menu = GUI::Menu::construct();
-        m_thickness_actions.set_exclusive(true);
-        auto insert_action = [&](int size, bool checked = false) {
-            auto action = GUI::Action::create_checkable(String::number(size), [this, size](auto&) {
-                m_thickness = size;
-            });
-            action->set_checked(checked);
-            m_thickness_actions.add_action(*action);
-            m_context_menu->add_action(move(action));
-        };
-        insert_action(1, true);
-        insert_action(2);
-        insert_action(3);
-        insert_action(4);
-    }
-    m_context_menu->popup(event.screen_position());
-}
-
-}
diff --git a/Applications/PixelPaint/LineTool.h b/Applications/PixelPaint/LineTool.h
deleted file mode 100644
index aa8757655c..0000000000
--- a/Applications/PixelPaint/LineTool.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Tool.h"
-#include <LibGUI/ActionGroup.h>
-#include <LibGfx/Point.h>
-
-namespace PixelPaint {
-
-class LineTool final : public Tool {
-public:
-    LineTool();
-    virtual ~LineTool() override;
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mousemove(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mouseup(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_tool_button_contextmenu(GUI::ContextMenuEvent&) override;
-    virtual void on_second_paint(const Layer&, GUI::PaintEvent&) override;
-    virtual void on_keydown(GUI::KeyEvent&) override;
-    virtual void on_keyup(GUI::KeyEvent&) override;
-
-private:
-    GUI::MouseButton m_drawing_button { GUI::MouseButton::None };
-    Gfx::IntPoint m_line_start_position;
-    Gfx::IntPoint m_line_end_position;
-
-    RefPtr<GUI::Menu> m_context_menu;
-    GUI::ActionGroup m_thickness_actions;
-    int m_thickness { 1 };
-    bool m_constrain_angle { false };
-};
-
-}
diff --git a/Applications/PixelPaint/MoveTool.cpp b/Applications/PixelPaint/MoveTool.cpp
deleted file mode 100644
index ebeba5ba89..0000000000
--- a/Applications/PixelPaint/MoveTool.cpp
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "MoveTool.h"
-#include "Image.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-
-namespace PixelPaint {
-
-MoveTool::MoveTool()
-{
-}
-
-MoveTool::~MoveTool()
-{
-}
-
-void MoveTool::on_mousedown(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent& image_event)
-{
-    if (event.button() != GUI::MouseButton::Left)
-        return;
-    if (!layer.rect().contains(event.position()))
-        return;
-    m_layer_being_moved = layer;
-    m_event_origin = image_event.position();
-    m_layer_origin = layer.location();
-    m_editor->window()->set_cursor(Gfx::StandardCursor::Move);
-}
-
-void MoveTool::on_mousemove(Layer&, GUI::MouseEvent&, GUI::MouseEvent& image_event)
-{
-    if (!m_layer_being_moved)
-        return;
-    auto delta = image_event.position() - m_event_origin;
-    m_layer_being_moved->set_location(m_layer_origin.translated(delta));
-    m_editor->layers_did_change();
-}
-
-void MoveTool::on_mouseup(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() != GUI::MouseButton::Left)
-        return;
-    m_layer_being_moved = nullptr;
-    m_editor->window()->set_cursor(Gfx::StandardCursor::None);
-    m_editor->did_complete_action();
-}
-
-void MoveTool::on_keydown(GUI::KeyEvent& event)
-{
-    if (event.modifiers() != 0)
-        return;
-
-    auto* layer = m_editor->active_layer();
-    if (!layer)
-        return;
-
-    auto new_location = layer->location();
-
-    switch (event.key()) {
-    case Key_Up:
-        new_location.move_by(0, -1);
-        break;
-    case Key_Down:
-        new_location.move_by(0, 1);
-        break;
-    case Key_Left:
-        new_location.move_by(-1, 0);
-        break;
-    case Key_Right:
-        new_location.move_by(1, 0);
-        break;
-    default:
-        return;
-    }
-
-    layer->set_location(new_location);
-    m_editor->layers_did_change();
-}
-
-void MoveTool::on_context_menu(Layer& layer, GUI::ContextMenuEvent& event)
-{
-    if (!m_context_menu) {
-        m_context_menu = GUI::Menu::construct();
-        m_context_menu->add_action(GUI::CommonActions::make_move_to_front_action(
-            [this](auto&) {
-                m_editor->image()->move_layer_to_front(*m_context_menu_layer);
-                m_editor->layers_did_change();
-            },
-            m_editor));
-        m_context_menu->add_action(GUI::CommonActions::make_move_to_back_action(
-            [this](auto&) {
-                m_editor->image()->move_layer_to_back(*m_context_menu_layer);
-                m_editor->layers_did_change();
-            },
-            m_editor));
-        m_context_menu->add_separator();
-        m_context_menu->add_action(GUI::Action::create(
-            "Delete layer", Gfx::Bitmap::load_from_file("/res/icons/16x16/delete.png"), [this](auto&) {
-                m_editor->image()->remove_layer(*m_context_menu_layer);
-                // FIXME: This should not be done imperatively here. Perhaps a Image::Client interface that ImageEditor can implement?
-                if (m_editor->active_layer() == m_context_menu_layer)
-                    m_editor->set_active_layer(nullptr);
-                m_editor->layers_did_change();
-            },
-            m_editor));
-    }
-    m_context_menu_layer = layer;
-    m_context_menu->popup(event.screen_position());
-}
-
-}
diff --git a/Applications/PixelPaint/MoveTool.h b/Applications/PixelPaint/MoveTool.h
deleted file mode 100644
index a0c16e5282..0000000000
--- a/Applications/PixelPaint/MoveTool.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Tool.h"
-
-namespace PixelPaint {
-
-class MoveTool final : public Tool {
-public:
-    MoveTool();
-    virtual ~MoveTool() override;
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mousemove(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mouseup(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_keydown(GUI::KeyEvent&) override;
-    virtual void on_context_menu(Layer&, GUI::ContextMenuEvent&) override;
-
-private:
-    RefPtr<Layer> m_layer_being_moved;
-    Gfx::IntPoint m_event_origin;
-    Gfx::IntPoint m_layer_origin;
-    RefPtr<GUI::Menu> m_context_menu;
-    RefPtr<Layer> m_context_menu_layer;
-};
-
-}
diff --git a/Applications/PixelPaint/PaletteWidget.cpp b/Applications/PixelPaint/PaletteWidget.cpp
deleted file mode 100644
index 52620b4b31..0000000000
--- a/Applications/PixelPaint/PaletteWidget.cpp
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "PaletteWidget.h"
-#include "ImageEditor.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/ColorPicker.h>
-#include <LibGfx/Palette.h>
-
-namespace PixelPaint {
-
-class ColorWidget : public GUI::Frame {
-    C_OBJECT(ColorWidget);
-
-public:
-    explicit ColorWidget(Color color, PaletteWidget& palette_widget)
-        : m_palette_widget(palette_widget)
-        , m_color(color)
-    {
-    }
-
-    virtual ~ColorWidget() override
-    {
-    }
-
-    virtual void mousedown_event(GUI::MouseEvent& event) override
-    {
-        if (event.modifiers() & KeyModifier::Mod_Ctrl && event.button() == GUI::MouseButton::Left) {
-            auto dialog = GUI::ColorPicker::construct(m_color, window());
-            if (dialog->exec() == GUI::Dialog::ExecOK) {
-                m_color = dialog->color();
-                auto pal = palette();
-                pal.set_color(ColorRole::Background, m_color);
-                set_palette(pal);
-                update();
-            }
-            return;
-        }
-
-        if (event.button() == GUI::MouseButton::Left)
-            m_palette_widget.set_primary_color(m_color);
-        else if (event.button() == GUI::MouseButton::Right)
-            m_palette_widget.set_secondary_color(m_color);
-    }
-
-private:
-    PaletteWidget& m_palette_widget;
-    Color m_color;
-};
-
-PaletteWidget::PaletteWidget(ImageEditor& editor)
-    : m_editor(editor)
-{
-    set_frame_shape(Gfx::FrameShape::Panel);
-    set_frame_shadow(Gfx::FrameShadow::Raised);
-    set_frame_thickness(0);
-    set_fill_with_background_color(true);
-
-    set_fixed_height(34);
-
-    m_secondary_color_widget = add<GUI::Frame>();
-    m_secondary_color_widget->set_relative_rect({ 2, 2, 60, 31 });
-    m_secondary_color_widget->set_fill_with_background_color(true);
-    set_secondary_color(m_editor.secondary_color());
-
-    m_primary_color_widget = add<GUI::Frame>();
-    Gfx::IntRect rect { 0, 0, 38, 15 };
-    rect.center_within(m_secondary_color_widget->relative_rect());
-    m_primary_color_widget->set_relative_rect(rect);
-    m_primary_color_widget->set_fill_with_background_color(true);
-    set_primary_color(m_editor.primary_color());
-
-    m_editor.on_primary_color_change = [this](Color color) {
-        set_primary_color(color);
-    };
-
-    m_editor.on_secondary_color_change = [this](Color color) {
-        set_secondary_color(color);
-    };
-
-    auto& color_container = add<GUI::Widget>();
-    color_container.set_relative_rect(m_secondary_color_widget->relative_rect().right() + 2, 2, 500, 32);
-    color_container.set_layout<GUI::VerticalBoxLayout>();
-    color_container.layout()->set_spacing(1);
-
-    auto& top_color_container = color_container.add<GUI::Widget>();
-    top_color_container.set_layout<GUI::HorizontalBoxLayout>();
-    top_color_container.layout()->set_spacing(1);
-
-    auto& bottom_color_container = color_container.add<GUI::Widget>();
-    bottom_color_container.set_layout<GUI::HorizontalBoxLayout>();
-    bottom_color_container.layout()->set_spacing(1);
-
-    auto add_color_widget = [&](GUI::Widget& container, Color color) {
-        auto& color_widget = container.add<ColorWidget>(color, *this);
-        color_widget.set_fill_with_background_color(true);
-        auto pal = color_widget.palette();
-        pal.set_color(ColorRole::Background, color);
-        color_widget.set_palette(pal);
-    };
-
-    add_color_widget(top_color_container, Color::from_rgb(0x000000));
-    add_color_widget(top_color_container, Color::from_rgb(0x808080));
-    add_color_widget(top_color_container, Color::from_rgb(0x800000));
-    add_color_widget(top_color_container, Color::from_rgb(0x808000));
-    add_color_widget(top_color_container, Color::from_rgb(0x008000));
-    add_color_widget(top_color_container, Color::from_rgb(0x008080));
-    add_color_widget(top_color_container, Color::from_rgb(0x000080));
-    add_color_widget(top_color_container, Color::from_rgb(0x800080));
-    add_color_widget(top_color_container, Color::from_rgb(0x808040));
-    add_color_widget(top_color_container, Color::from_rgb(0x004040));
-    add_color_widget(top_color_container, Color::from_rgb(0x0080ff));
-    add_color_widget(top_color_container, Color::from_rgb(0x004080));
-    add_color_widget(top_color_container, Color::from_rgb(0x8000ff));
-    add_color_widget(top_color_container, Color::from_rgb(0x804000));
-
-    add_color_widget(bottom_color_container, Color::from_rgb(0xffffff));
-    add_color_widget(bottom_color_container, Color::from_rgb(0xc0c0c0));
-    add_color_widget(bottom_color_container, Color::from_rgb(0xff0000));
-    add_color_widget(bottom_color_container, Color::from_rgb(0xffff00));
-    add_color_widget(bottom_color_container, Color::from_rgb(0x00ff00));
-    add_color_widget(bottom_color_container, Color::from_rgb(0x00ffff));
-    add_color_widget(bottom_color_container, Color::from_rgb(0x0000ff));
-    add_color_widget(bottom_color_container, Color::from_rgb(0xff00ff));
-    add_color_widget(bottom_color_container, Color::from_rgb(0xffff80));
-    add_color_widget(bottom_color_container, Color::from_rgb(0x00ff80));
-    add_color_widget(bottom_color_container, Color::from_rgb(0x80ffff));
-    add_color_widget(bottom_color_container, Color::from_rgb(0x8080ff));
-    add_color_widget(bottom_color_container, Color::from_rgb(0xff0080));
-    add_color_widget(bottom_color_container, Color::from_rgb(0xff8040));
-}
-
-PaletteWidget::~PaletteWidget()
-{
-}
-
-void PaletteWidget::set_primary_color(Color color)
-{
-    m_editor.set_primary_color(color);
-    auto pal = m_primary_color_widget->palette();
-    pal.set_color(ColorRole::Background, color);
-    m_primary_color_widget->set_palette(pal);
-    m_primary_color_widget->update();
-}
-
-void PaletteWidget::set_secondary_color(Color color)
-{
-    m_editor.set_secondary_color(color);
-    auto pal = m_secondary_color_widget->palette();
-    pal.set_color(ColorRole::Background, color);
-    m_secondary_color_widget->set_palette(pal);
-    m_secondary_color_widget->update();
-}
-
-}
diff --git a/Applications/PixelPaint/PaletteWidget.h b/Applications/PixelPaint/PaletteWidget.h
deleted file mode 100644
index 02c843f038..0000000000
--- a/Applications/PixelPaint/PaletteWidget.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Frame.h>
-
-namespace PixelPaint {
-
-class ImageEditor;
-
-class PaletteWidget final : public GUI::Frame {
-    C_OBJECT(PaletteWidget);
-
-public:
-    virtual ~PaletteWidget() override;
-
-    void set_primary_color(Color);
-    void set_secondary_color(Color);
-
-private:
-    explicit PaletteWidget(ImageEditor&);
-
-    ImageEditor& m_editor;
-    RefPtr<GUI::Frame> m_primary_color_widget;
-    RefPtr<GUI::Frame> m_secondary_color_widget;
-};
-
-}
diff --git a/Applications/PixelPaint/PenTool.cpp b/Applications/PixelPaint/PenTool.cpp
deleted file mode 100644
index 579231edf7..0000000000
--- a/Applications/PixelPaint/PenTool.cpp
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "PenTool.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/Slider.h>
-
-namespace PixelPaint {
-
-PenTool::PenTool()
-{
-}
-
-PenTool::~PenTool()
-{
-}
-
-void PenTool::on_mousedown(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() != GUI::MouseButton::Left && event.button() != GUI::MouseButton::Right)
-        return;
-
-    GUI::Painter painter(layer.bitmap());
-    painter.draw_line(event.position(), event.position(), m_editor->color_for(event), m_thickness);
-    layer.did_modify_bitmap(*m_editor->image());
-    m_last_drawing_event_position = event.position();
-}
-
-void PenTool::on_mouseup(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() == GUI::MouseButton::Left || event.button() == GUI::MouseButton::Right) {
-        m_last_drawing_event_position = { -1, -1 };
-        m_editor->did_complete_action();
-    }
-}
-
-void PenTool::on_mousemove(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (!(event.buttons() & GUI::MouseButton::Left || event.buttons() & GUI::MouseButton::Right))
-        return;
-    GUI::Painter painter(layer.bitmap());
-
-    if (m_last_drawing_event_position != Gfx::IntPoint(-1, -1))
-        painter.draw_line(m_last_drawing_event_position, event.position(), m_editor->color_for(event), m_thickness);
-    else
-        painter.draw_line(event.position(), event.position(), m_editor->color_for(event), m_thickness);
-    layer.did_modify_bitmap(*m_editor->image());
-
-    m_last_drawing_event_position = event.position();
-}
-
-void PenTool::on_tool_button_contextmenu(GUI::ContextMenuEvent& event)
-{
-    if (!m_context_menu) {
-        m_context_menu = GUI::Menu::construct();
-        m_thickness_actions.set_exclusive(true);
-        auto insert_action = [&](int size, bool checked = false) {
-            auto action = GUI::Action::create_checkable(String::number(size), [this, size](auto&) {
-                m_thickness = size;
-            });
-            action->set_checked(checked);
-            m_thickness_actions.add_action(*action);
-            m_context_menu->add_action(move(action));
-        };
-        insert_action(1, true);
-        insert_action(2);
-        insert_action(3);
-        insert_action(4);
-    }
-    m_context_menu->popup(event.screen_position());
-}
-
-GUI::Widget* PenTool::get_properties_widget()
-{
-    if (!m_properties_widget) {
-        m_properties_widget = GUI::Widget::construct();
-        m_properties_widget->set_layout<GUI::VerticalBoxLayout>();
-
-        auto& thickness_container = m_properties_widget->add<GUI::Widget>();
-        thickness_container.set_fixed_height(20);
-        thickness_container.set_layout<GUI::HorizontalBoxLayout>();
-
-        auto& thickness_label = thickness_container.add<GUI::Label>("Thickness:");
-        thickness_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-        thickness_label.set_fixed_size(80, 20);
-
-        auto& thickness_slider = thickness_container.add<GUI::HorizontalSlider>();
-        thickness_slider.set_fixed_height(20);
-        thickness_slider.set_range(1, 20);
-        thickness_slider.set_value(m_thickness);
-        thickness_slider.on_change = [this](int value) {
-            m_thickness = value;
-        };
-    }
-
-    return m_properties_widget.ptr();
-}
-
-}
diff --git a/Applications/PixelPaint/PenTool.h b/Applications/PixelPaint/PenTool.h
deleted file mode 100644
index 137e58251e..0000000000
--- a/Applications/PixelPaint/PenTool.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Tool.h"
-#include <LibGUI/ActionGroup.h>
-#include <LibGfx/Point.h>
-
-namespace PixelPaint {
-
-class PenTool final : public Tool {
-public:
-    PenTool();
-    virtual ~PenTool() override;
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mousemove(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mouseup(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_tool_button_contextmenu(GUI::ContextMenuEvent&) override;
-    virtual GUI::Widget* get_properties_widget() override;
-
-private:
-    Gfx::IntPoint m_last_drawing_event_position { -1, -1 };
-    RefPtr<GUI::Menu> m_context_menu;
-    RefPtr<GUI::Widget> m_properties_widget;
-    int m_thickness { 1 };
-    GUI::ActionGroup m_thickness_actions;
-};
-
-}
diff --git a/Applications/PixelPaint/PickerTool.cpp b/Applications/PixelPaint/PickerTool.cpp
deleted file mode 100644
index 86a7acf961..0000000000
--- a/Applications/PixelPaint/PickerTool.cpp
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "PickerTool.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <LibGfx/Bitmap.h>
-
-namespace PixelPaint {
-
-PickerTool::PickerTool()
-{
-}
-
-PickerTool::~PickerTool()
-{
-}
-
-void PickerTool::on_mousedown(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (!layer.rect().contains(event.position()))
-        return;
-    auto color = layer.bitmap().get_pixel(event.position());
-    if (event.button() == GUI::MouseButton::Left)
-        m_editor->set_primary_color(color);
-    else if (event.button() == GUI::MouseButton::Right)
-        m_editor->set_secondary_color(color);
-}
-
-}
diff --git a/Applications/PixelPaint/PickerTool.h b/Applications/PixelPaint/PickerTool.h
deleted file mode 100644
index 163a0aeeee..0000000000
--- a/Applications/PixelPaint/PickerTool.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Tool.h"
-
-namespace PixelPaint {
-
-class PickerTool final : public Tool {
-public:
-    PickerTool();
-    virtual ~PickerTool() override;
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-};
-
-}
diff --git a/Applications/PixelPaint/RectangleTool.cpp b/Applications/PixelPaint/RectangleTool.cpp
deleted file mode 100644
index a5b023f18b..0000000000
--- a/Applications/PixelPaint/RectangleTool.cpp
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "RectangleTool.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Painter.h>
-#include <LibGfx/Rect.h>
-#include <math.h>
-
-namespace PixelPaint {
-
-RectangleTool::RectangleTool()
-{
-}
-
-RectangleTool::~RectangleTool()
-{
-}
-
-void RectangleTool::draw_using(GUI::Painter& painter, const Gfx::IntRect& rect)
-{
-    switch (m_mode) {
-    case Mode::Fill:
-        painter.fill_rect(rect, m_editor->color_for(m_drawing_button));
-        break;
-    case Mode::Outline:
-        painter.draw_rect(rect, m_editor->color_for(m_drawing_button));
-        break;
-    case Mode::Gradient:
-        painter.fill_rect_with_gradient(rect, m_editor->primary_color(), m_editor->secondary_color());
-        break;
-    default:
-        ASSERT_NOT_REACHED();
-    }
-}
-
-void RectangleTool::on_mousedown(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() != GUI::MouseButton::Left && event.button() != GUI::MouseButton::Right)
-        return;
-
-    if (m_drawing_button != GUI::MouseButton::None)
-        return;
-
-    m_drawing_button = event.button();
-    m_rectangle_start_position = event.position();
-    m_rectangle_end_position = event.position();
-    m_editor->update();
-}
-
-void RectangleTool::on_mouseup(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (event.button() == m_drawing_button) {
-        GUI::Painter painter(layer.bitmap());
-        auto rect = Gfx::IntRect::from_two_points(m_rectangle_start_position, m_rectangle_end_position);
-        draw_using(painter, rect);
-        m_drawing_button = GUI::MouseButton::None;
-        layer.did_modify_bitmap(*m_editor->image());
-        m_editor->did_complete_action();
-    }
-}
-
-void RectangleTool::on_mousemove(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    if (m_drawing_button == GUI::MouseButton::None)
-        return;
-
-    m_rectangle_end_position = event.position();
-    m_editor->update();
-}
-
-void RectangleTool::on_second_paint(const Layer& layer, GUI::PaintEvent& event)
-{
-    if (m_drawing_button == GUI::MouseButton::None)
-        return;
-
-    GUI::Painter painter(*m_editor);
-    painter.add_clip_rect(event.rect());
-    auto rect = Gfx::IntRect::from_two_points(
-        m_editor->layer_position_to_editor_position(layer, m_rectangle_start_position).to_type<int>(),
-        m_editor->layer_position_to_editor_position(layer, m_rectangle_end_position).to_type<int>());
-    draw_using(painter, rect);
-}
-
-void RectangleTool::on_keydown(GUI::KeyEvent& event)
-{
-    if (event.key() == Key_Escape && m_drawing_button != GUI::MouseButton::None) {
-        m_drawing_button = GUI::MouseButton::None;
-        m_editor->update();
-        event.accept();
-    }
-}
-
-void RectangleTool::on_tool_button_contextmenu(GUI::ContextMenuEvent& event)
-{
-    if (!m_context_menu) {
-        m_context_menu = GUI::Menu::construct();
-        m_context_menu->add_action(GUI::Action::create("Fill", [this](auto&) {
-            m_mode = Mode::Fill;
-        }));
-        m_context_menu->add_action(GUI::Action::create("Outline", [this](auto&) {
-            m_mode = Mode::Outline;
-        }));
-        m_context_menu->add_action(GUI::Action::create("Gradient", [this](auto&) {
-            m_mode = Mode::Gradient;
-        }));
-    }
-    m_context_menu->popup(event.screen_position());
-}
-
-}
diff --git a/Applications/PixelPaint/RectangleTool.h b/Applications/PixelPaint/RectangleTool.h
deleted file mode 100644
index f7d8c53273..0000000000
--- a/Applications/PixelPaint/RectangleTool.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Tool.h"
-#include <LibGUI/Forward.h>
-#include <LibGfx/Point.h>
-
-namespace PixelPaint {
-
-class RectangleTool final : public Tool {
-public:
-    RectangleTool();
-    virtual ~RectangleTool() override;
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mousemove(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mouseup(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_tool_button_contextmenu(GUI::ContextMenuEvent&) override;
-    virtual void on_second_paint(const Layer&, GUI::PaintEvent&) override;
-    virtual void on_keydown(GUI::KeyEvent&) override;
-
-private:
-    enum class Mode {
-        Outline,
-        Fill,
-        Gradient,
-    };
-
-    void draw_using(GUI::Painter&, const Gfx::IntRect&);
-
-    GUI::MouseButton m_drawing_button { GUI::MouseButton::None };
-    Gfx::IntPoint m_rectangle_start_position;
-    Gfx::IntPoint m_rectangle_end_position;
-    RefPtr<GUI::Menu> m_context_menu;
-    Mode m_mode { Mode::Outline };
-};
-
-}
diff --git a/Applications/PixelPaint/SprayTool.cpp b/Applications/PixelPaint/SprayTool.cpp
deleted file mode 100644
index 9997c29674..0000000000
--- a/Applications/PixelPaint/SprayTool.cpp
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "SprayTool.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include <AK/Queue.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/Slider.h>
-#include <LibGfx/Bitmap.h>
-#include <math.h>
-#include <stdio.h>
-
-namespace PixelPaint {
-
-SprayTool::SprayTool()
-{
-    m_timer = Core::Timer::construct();
-    m_timer->on_timeout = [&]() {
-        paint_it();
-    };
-    m_timer->set_interval(200);
-}
-
-SprayTool::~SprayTool()
-{
-}
-
-static double nrand()
-{
-    return double(rand()) / double(RAND_MAX);
-}
-
-void SprayTool::paint_it()
-{
-    auto* layer = m_editor->active_layer();
-    if (!layer)
-        return;
-
-    auto& bitmap = layer->bitmap();
-    GUI::Painter painter(bitmap);
-    ASSERT(bitmap.bpp() == 32);
-    m_editor->update();
-    const double minimal_radius = 2;
-    const double base_radius = minimal_radius * m_thickness;
-    for (int i = 0; i < M_PI * base_radius * base_radius * (m_density / 100.0f); i++) {
-        double radius = base_radius * nrand();
-        double angle = 2 * M_PI * nrand();
-        const int xpos = m_last_pos.x() + radius * cos(angle);
-        const int ypos = m_last_pos.y() - radius * sin(angle);
-        if (xpos < 0 || xpos >= bitmap.width())
-            continue;
-        if (ypos < 0 || ypos >= bitmap.height())
-            continue;
-        bitmap.set_pixel<Gfx::StorageFormat::RGBA32>(xpos, ypos, m_color);
-    }
-
-    layer->did_modify_bitmap(*m_editor->image());
-}
-
-void SprayTool::on_mousedown(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    m_color = m_editor->color_for(event);
-    m_last_pos = event.position();
-    m_timer->start();
-    paint_it();
-}
-
-void SprayTool::on_mousemove(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
-{
-    m_last_pos = event.position();
-    if (m_timer->is_active()) {
-        paint_it();
-        m_timer->restart(m_timer->interval());
-    }
-}
-
-void SprayTool::on_mouseup(Layer&, GUI::MouseEvent&, GUI::MouseEvent&)
-{
-    if (m_timer->is_active()) {
-        m_timer->stop();
-        m_editor->did_complete_action();
-    }
-}
-
-void SprayTool::on_tool_button_contextmenu(GUI::ContextMenuEvent& event)
-{
-    if (!m_context_menu) {
-        m_context_menu = GUI::Menu::construct();
-        m_thickness_actions.set_exclusive(true);
-        auto insert_action = [&](int size, bool checked = false) {
-            auto action = GUI::Action::create_checkable(String::number(size), [this, size](auto&) {
-                m_thickness = size;
-            });
-            action->set_checked(checked);
-            m_thickness_actions.add_action(*action);
-            m_context_menu->add_action(move(action));
-        };
-        insert_action(1, true);
-        insert_action(2);
-        insert_action(3);
-        insert_action(4);
-    }
-    m_context_menu->popup(event.screen_position());
-}
-
-GUI::Widget* SprayTool::get_properties_widget()
-{
-    if (!m_properties_widget) {
-        m_properties_widget = GUI::Widget::construct();
-        m_properties_widget->set_layout<GUI::VerticalBoxLayout>();
-
-        auto& thickness_container = m_properties_widget->add<GUI::Widget>();
-        thickness_container.set_fixed_height(20);
-        thickness_container.set_layout<GUI::HorizontalBoxLayout>();
-
-        auto& thickness_label = thickness_container.add<GUI::Label>("Thickness:");
-        thickness_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-        thickness_label.set_fixed_size(80, 20);
-
-        auto& thickness_slider = thickness_container.add<GUI::HorizontalSlider>();
-        thickness_slider.set_fixed_height(20);
-        thickness_slider.set_range(1, 20);
-        thickness_slider.set_value(m_thickness);
-        thickness_slider.on_change = [this](int value) {
-            m_thickness = value;
-        };
-
-        auto& density_container = m_properties_widget->add<GUI::Widget>();
-        density_container.set_fixed_height(20);
-        density_container.set_layout<GUI::HorizontalBoxLayout>();
-
-        auto& density_label = density_container.add<GUI::Label>("Density:");
-        density_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-        density_label.set_fixed_size(80, 20);
-
-        auto& density_slider = density_container.add<GUI::HorizontalSlider>();
-        density_slider.set_fixed_height(30);
-        density_slider.set_range(1, 100);
-        density_slider.set_value(m_density);
-        density_slider.on_change = [this](int value) {
-            m_density = value;
-        };
-    }
-
-    return m_properties_widget.ptr();
-}
-
-}
diff --git a/Applications/PixelPaint/SprayTool.h b/Applications/PixelPaint/SprayTool.h
deleted file mode 100644
index a3e55efd52..0000000000
--- a/Applications/PixelPaint/SprayTool.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Tool.h"
-#include <LibCore/Timer.h>
-#include <LibGUI/ActionGroup.h>
-#include <LibGUI/Painter.h>
-
-namespace PixelPaint {
-
-class SprayTool final : public Tool {
-public:
-    SprayTool();
-    virtual ~SprayTool() override;
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mouseup(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_mousemove(Layer&, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event) override;
-    virtual void on_tool_button_contextmenu(GUI::ContextMenuEvent&) override;
-    virtual GUI::Widget* get_properties_widget() override;
-
-private:
-    void paint_it();
-
-    RefPtr<GUI::Widget> m_properties_widget;
-    RefPtr<Core::Timer> m_timer;
-    Gfx::IntPoint m_last_pos;
-    Color m_color;
-    RefPtr<GUI::Menu> m_context_menu;
-    GUI::ActionGroup m_thickness_actions;
-    int m_thickness { 10 };
-    int m_density { 40 };
-};
-
-}
diff --git a/Applications/PixelPaint/Tool.cpp b/Applications/PixelPaint/Tool.cpp
deleted file mode 100644
index 846e017410..0000000000
--- a/Applications/PixelPaint/Tool.cpp
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Tool.h"
-#include "ImageEditor.h"
-#include <LibGUI/Action.h>
-
-namespace PixelPaint {
-
-Tool::Tool()
-{
-}
-
-Tool::~Tool()
-{
-}
-
-void Tool::setup(ImageEditor& editor)
-{
-    m_editor = editor;
-}
-
-void Tool::set_action(GUI::Action* action)
-{
-    m_action = action;
-}
-
-}
diff --git a/Applications/PixelPaint/Tool.h b/Applications/PixelPaint/Tool.h
deleted file mode 100644
index e7deb5f1cb..0000000000
--- a/Applications/PixelPaint/Tool.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Event.h>
-#include <LibGUI/Forward.h>
-
-namespace PixelPaint {
-
-class ImageEditor;
-class Layer;
-
-class Tool {
-public:
-    virtual ~Tool();
-
-    virtual void on_mousedown(Layer&, GUI::MouseEvent&, GUI::MouseEvent&) { }
-    virtual void on_mousemove(Layer&, GUI::MouseEvent&, GUI::MouseEvent&) { }
-    virtual void on_mouseup(Layer&, GUI::MouseEvent&, GUI::MouseEvent&) { }
-    virtual void on_context_menu(Layer&, GUI::ContextMenuEvent&) { }
-    virtual void on_tool_button_contextmenu(GUI::ContextMenuEvent&) { }
-    virtual void on_second_paint(const Layer&, GUI::PaintEvent&) { }
-    virtual void on_keydown(GUI::KeyEvent&) { }
-    virtual void on_keyup(GUI::KeyEvent&) { }
-    virtual GUI::Widget* get_properties_widget() { return nullptr; }
-
-    void clear() { m_editor = nullptr; }
-    void setup(ImageEditor&);
-
-    GUI::Action* action() { return m_action; }
-    void set_action(GUI::Action*);
-
-protected:
-    Tool();
-    WeakPtr<ImageEditor> m_editor;
-    RefPtr<GUI::Action> m_action;
-};
-
-}
diff --git a/Applications/PixelPaint/ToolPropertiesWidget.cpp b/Applications/PixelPaint/ToolPropertiesWidget.cpp
deleted file mode 100644
index a27103d3e7..0000000000
--- a/Applications/PixelPaint/ToolPropertiesWidget.cpp
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ToolPropertiesWidget.h"
-#include "Tool.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/GroupBox.h>
-
-namespace PixelPaint {
-
-ToolPropertiesWidget::ToolPropertiesWidget()
-{
-    set_layout<GUI::VerticalBoxLayout>();
-
-    m_group_box = add<GUI::GroupBox>("Tool properties");
-    auto& layout = m_group_box->set_layout<GUI::VerticalBoxLayout>();
-    layout.set_margins({ 10, 20, 10, 10 });
-}
-
-void ToolPropertiesWidget::set_active_tool(Tool* tool)
-{
-    if (tool == m_active_tool)
-        return;
-
-    if (m_active_tool_widget != nullptr)
-        m_group_box->remove_child(*m_active_tool_widget);
-
-    m_active_tool = tool;
-    m_active_tool_widget = tool->get_properties_widget();
-    if (m_active_tool_widget != nullptr)
-        m_group_box->add_child(*m_active_tool_widget);
-}
-
-ToolPropertiesWidget::~ToolPropertiesWidget()
-{
-}
-
-}
diff --git a/Applications/PixelPaint/ToolPropertiesWidget.h b/Applications/PixelPaint/ToolPropertiesWidget.h
deleted file mode 100644
index 41c1675cfa..0000000000
--- a/Applications/PixelPaint/ToolPropertiesWidget.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/RefPtr.h>
-#include <LibGUI/Forward.h>
-#include <LibGUI/Widget.h>
-
-namespace PixelPaint {
-
-class Tool;
-
-class ToolPropertiesWidget final : public GUI::Widget {
-    C_OBJECT(ToolPropertiesWidget);
-
-public:
-    virtual ~ToolPropertiesWidget() override;
-
-    void set_active_tool(Tool*);
-
-private:
-    ToolPropertiesWidget();
-
-    RefPtr<GUI::GroupBox> m_group_box;
-
-    Tool* m_active_tool { nullptr };
-    GUI::Widget* m_active_tool_widget { nullptr };
-};
-
-}
diff --git a/Applications/PixelPaint/ToolboxWidget.cpp b/Applications/PixelPaint/ToolboxWidget.cpp
deleted file mode 100644
index c746901887..0000000000
--- a/Applications/PixelPaint/ToolboxWidget.cpp
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ToolboxWidget.h"
-#include "BrushTool.h"
-#include "BucketTool.h"
-#include "EllipseTool.h"
-#include "EraseTool.h"
-#include "LineTool.h"
-#include "MoveTool.h"
-#include "PenTool.h"
-#include "PickerTool.h"
-#include "RectangleTool.h"
-#include "SprayTool.h"
-#include <AK/StringBuilder.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/Window.h>
-
-namespace PixelPaint {
-
-class ToolButton final : public GUI::Button {
-    C_OBJECT(ToolButton)
-public:
-    ToolButton(ToolboxWidget& toolbox, const String& name, const GUI::Shortcut& shortcut, OwnPtr<Tool> tool)
-        : m_toolbox(toolbox)
-        , m_tool(move(tool))
-    {
-        StringBuilder builder;
-        builder.append(name);
-        builder.append(" (");
-        builder.append(shortcut.to_string());
-        builder.append(")");
-        set_tooltip(builder.to_string());
-
-        m_action = GUI::Action::create_checkable(
-            name, shortcut, [this](auto& action) {
-                if (action.is_checked())
-                    m_toolbox.on_tool_selection(m_tool);
-                else
-                    m_toolbox.on_tool_selection(nullptr);
-            },
-            toolbox.window());
-
-        m_tool->set_action(m_action);
-        set_action(*m_action);
-        m_toolbox.m_action_group.add_action(*m_action);
-    }
-
-    const Tool& tool() const { return *m_tool; }
-    Tool& tool() { return *m_tool; }
-
-    virtual bool is_uncheckable() const override { return false; }
-
-    virtual void context_menu_event(GUI::ContextMenuEvent& event) override
-    {
-        m_action->activate();
-        m_tool->on_tool_button_contextmenu(event);
-    }
-
-private:
-    ToolboxWidget& m_toolbox;
-    OwnPtr<Tool> m_tool;
-    RefPtr<GUI::Action> m_action;
-};
-
-ToolboxWidget::ToolboxWidget()
-{
-    set_fill_with_background_color(true);
-
-    set_frame_thickness(1);
-    set_frame_shape(Gfx::FrameShape::Panel);
-    set_frame_shadow(Gfx::FrameShadow::Raised);
-
-    set_fixed_width(48);
-
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins({ 4, 4, 4, 4 });
-
-    m_action_group.set_exclusive(true);
-    m_action_group.set_unchecking_allowed(false);
-
-    deferred_invoke([this](auto&) {
-        setup_tools();
-    });
-}
-
-ToolboxWidget::~ToolboxWidget()
-{
-}
-
-void ToolboxWidget::setup_tools()
-{
-    auto add_tool = [&](const StringView& name, const StringView& icon_name, const GUI::Shortcut& shortcut, NonnullOwnPtr<Tool> tool) -> ToolButton& {
-        m_tools.append(tool.ptr());
-        auto& button = add<ToolButton>(*this, name, shortcut, move(tool));
-        button.set_focus_policy(GUI::FocusPolicy::TabFocus);
-        button.set_fixed_height(32);
-        button.set_checkable(true);
-        button.set_icon(Gfx::Bitmap::load_from_file(String::formatted("/res/icons/pixelpaint/{}.png", icon_name)));
-        return button;
-    };
-
-    add_tool("Move", "move", { 0, Key_M }, make<MoveTool>());
-    add_tool("Pen", "pen", { 0, Key_N }, make<PenTool>());
-    add_tool("Brush", "brush", { 0, Key_P }, make<BrushTool>());
-    add_tool("Bucket Fill", "bucket", { Mod_Shift, Key_B }, make<BucketTool>());
-    add_tool("Spray", "spray", { Mod_Shift, Key_S }, make<SprayTool>());
-    add_tool("Color Picker", "picker", { 0, Key_O }, make<PickerTool>());
-    add_tool("Erase", "eraser", { Mod_Shift, Key_E }, make<EraseTool>());
-    add_tool("Line", "line", { Mod_Ctrl | Mod_Shift, Key_L }, make<LineTool>());
-    add_tool("Rectangle", "rectangle", { Mod_Ctrl | Mod_Shift, Key_R }, make<RectangleTool>());
-    add_tool("Ellipse", "circle", { Mod_Ctrl | Mod_Shift, Key_E }, make<EllipseTool>());
-}
-
-}
diff --git a/Applications/PixelPaint/ToolboxWidget.h b/Applications/PixelPaint/ToolboxWidget.h
deleted file mode 100644
index 23794179f6..0000000000
--- a/Applications/PixelPaint/ToolboxWidget.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/ActionGroup.h>
-#include <LibGUI/Frame.h>
-
-namespace PixelPaint {
-
-class Tool;
-
-class ToolboxWidget final : public GUI::Frame {
-    C_OBJECT(ToolboxWidget)
-public:
-    virtual ~ToolboxWidget() override;
-
-    Function<void(Tool*)> on_tool_selection;
-
-    template<typename Callback>
-    void for_each_tool(Callback callback)
-    {
-        for (auto& tool : m_tools)
-            callback(*tool);
-    }
-
-private:
-    friend class ToolButton;
-
-    void setup_tools();
-
-    explicit ToolboxWidget();
-    GUI::ActionGroup m_action_group;
-    Vector<Tool*> m_tools;
-};
-
-}
diff --git a/Applications/PixelPaint/main.cpp b/Applications/PixelPaint/main.cpp
deleted file mode 100644
index 02164a52ce..0000000000
--- a/Applications/PixelPaint/main.cpp
+++ /dev/null
@@ -1,387 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "CreateNewImageDialog.h"
-#include "CreateNewLayerDialog.h"
-#include "FilterParams.h"
-#include "Image.h"
-#include "ImageEditor.h"
-#include "Layer.h"
-#include "LayerListWidget.h"
-#include "LayerPropertiesWidget.h"
-#include "PaletteWidget.h"
-#include "Tool.h"
-#include "ToolPropertiesWidget.h"
-#include "ToolboxWidget.h"
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Clipboard.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/TableView.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/Matrix4x4.h>
-#include <stdio.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio thread shared_buffer accept rpath unix wpath cpath fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio thread shared_buffer accept rpath wpath cpath", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-pixel-paint");
-
-    auto window = GUI::Window::construct();
-    window->set_title("PixelPaint");
-    window->resize(950, 570);
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    auto& horizontal_container = window->set_main_widget<GUI::Widget>();
-    horizontal_container.set_layout<GUI::HorizontalBoxLayout>();
-    horizontal_container.layout()->set_spacing(0);
-
-    auto& toolbox = horizontal_container.add<PixelPaint::ToolboxWidget>();
-
-    auto& vertical_container = horizontal_container.add<GUI::Widget>();
-    vertical_container.set_layout<GUI::VerticalBoxLayout>();
-    vertical_container.layout()->set_spacing(0);
-
-    auto& image_editor = vertical_container.add<PixelPaint::ImageEditor>();
-    image_editor.set_focus(true);
-
-    vertical_container.add<PixelPaint::PaletteWidget>(image_editor);
-
-    auto& right_panel = horizontal_container.add<GUI::Widget>();
-    right_panel.set_fill_with_background_color(true);
-    right_panel.set_fixed_width(230);
-    right_panel.set_layout<GUI::VerticalBoxLayout>();
-
-    auto& layer_list_widget = right_panel.add<PixelPaint::LayerListWidget>();
-
-    auto& layer_properties_widget = right_panel.add<PixelPaint::LayerPropertiesWidget>();
-
-    auto& tool_properties_widget = right_panel.add<PixelPaint::ToolPropertiesWidget>();
-
-    toolbox.on_tool_selection = [&](auto* tool) {
-        image_editor.set_active_tool(tool);
-        tool_properties_widget.set_active_tool(tool);
-    };
-
-    window->show();
-
-    auto menubar = GUI::MenuBar::construct();
-    auto& app_menu = menubar->add_menu("PixelPaint");
-
-    app_menu.add_action(
-        GUI::Action::create(
-            "New", [&](auto&) {
-                auto dialog = PixelPaint::CreateNewImageDialog::construct(window);
-                if (dialog->exec() == GUI::Dialog::ExecOK) {
-                    auto image = PixelPaint::Image::create_with_size(dialog->image_size());
-                    auto bg_layer = PixelPaint::Layer::create_with_size(*image, image->size(), "Background");
-                    image->add_layer(*bg_layer);
-                    bg_layer->bitmap().fill(Color::White);
-
-                    image_editor.set_image(image);
-                    layer_list_widget.set_image(image);
-                    image_editor.set_active_layer(bg_layer);
-                }
-            },
-            window));
-    app_menu.add_action(GUI::CommonActions::make_open_action([&](auto&) {
-        Optional<String> open_path = GUI::FilePicker::get_open_filepath(window);
-
-        if (!open_path.has_value())
-            return;
-
-        auto image = PixelPaint::Image::create_from_file(open_path.value());
-        image_editor.set_image(image);
-        layer_list_widget.set_image(image);
-    }));
-    app_menu.add_action(GUI::CommonActions::make_save_as_action([&](auto&) {
-        if (!image_editor.image())
-            return;
-
-        Optional<String> save_path = GUI::FilePicker::get_save_filepath(window, "untitled", "pp");
-
-        if (!save_path.has_value())
-            return;
-
-        image_editor.image()->save(save_path.value());
-    }));
-    auto& export_submenu = app_menu.add_submenu("Export");
-    export_submenu.add_action(
-        GUI::Action::create(
-            "As BMP", [&](auto&) {
-                if (!image_editor.image())
-                    return;
-
-                Optional<String> save_path = GUI::FilePicker::get_save_filepath(window, "untitled", "bmp");
-
-                if (!save_path.has_value())
-                    return;
-
-                image_editor.image()->export_bmp(save_path.value());
-            },
-            window));
-
-    app_menu.add_separator();
-    app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
-        GUI::Application::the()->quit();
-        return;
-    }));
-
-    auto& edit_menu = menubar->add_menu("Edit");
-    auto paste_action = GUI::CommonActions::make_paste_action([&](auto&) {
-        ASSERT(image_editor.image());
-        auto bitmap = GUI::Clipboard::the().bitmap();
-        if (!bitmap)
-            return;
-
-        auto layer = PixelPaint::Layer::create_with_bitmap(*image_editor.image(), *bitmap, "Pasted layer");
-        image_editor.image()->add_layer(layer.release_nonnull());
-    });
-    GUI::Clipboard::the().on_change = [&](auto& mime_type) {
-        paste_action->set_enabled(mime_type == "image/x-serenityos");
-    };
-    paste_action->set_enabled(GUI::Clipboard::the().mime_type() == "image/x-serenityos");
-
-    edit_menu.add_action(paste_action);
-
-    auto undo_action = GUI::CommonActions::make_undo_action([&](auto&) {
-        ASSERT(image_editor.image());
-        image_editor.undo();
-    });
-    edit_menu.add_action(undo_action);
-
-    auto redo_action = GUI::CommonActions::make_redo_action([&](auto&) {
-        ASSERT(image_editor.image());
-        image_editor.redo();
-    });
-    edit_menu.add_action(redo_action);
-
-    auto& tool_menu = menubar->add_menu("Tool");
-    toolbox.for_each_tool([&](auto& tool) {
-        if (tool.action())
-            tool_menu.add_action(*tool.action());
-        return IterationDecision::Continue;
-    });
-
-    auto& layer_menu = menubar->add_menu("Layer");
-    layer_menu.add_action(GUI::Action::create(
-        "Create new layer...", { Mod_Ctrl | Mod_Shift, Key_N }, [&](auto&) {
-            auto dialog = PixelPaint::CreateNewLayerDialog::construct(image_editor.image()->size(), window);
-            if (dialog->exec() == GUI::Dialog::ExecOK) {
-                auto layer = PixelPaint::Layer::create_with_size(*image_editor.image(), dialog->layer_size(), dialog->layer_name());
-                if (!layer) {
-                    GUI::MessageBox::show_error(window, String::formatted("Unable to create layer with size {}", dialog->size().to_string()));
-                    return;
-                }
-                image_editor.image()->add_layer(layer.release_nonnull());
-                image_editor.layers_did_change();
-            }
-        },
-        window));
-
-    layer_menu.add_separator();
-    layer_menu.add_action(GUI::Action::create(
-        "Select previous layer", { 0, Key_PageUp }, [&](auto&) {
-            layer_list_widget.move_selection(1);
-        },
-        window));
-    layer_menu.add_action(GUI::Action::create(
-        "Select next layer", { 0, Key_PageDown }, [&](auto&) {
-            layer_list_widget.move_selection(-1);
-        },
-        window));
-    layer_menu.add_action(GUI::Action::create(
-        "Select top layer", { 0, Key_Home }, [&](auto&) {
-            layer_list_widget.select_top_layer();
-        },
-        window));
-    layer_menu.add_action(GUI::Action::create(
-        "Select bottom layer", { 0, Key_End }, [&](auto&) {
-            layer_list_widget.select_bottom_layer();
-        },
-        window));
-    layer_menu.add_separator();
-    layer_menu.add_action(GUI::Action::create(
-        "Move active layer up", { Mod_Ctrl, Key_PageUp }, [&](auto&) {
-            auto active_layer = image_editor.active_layer();
-            if (!active_layer)
-                return;
-            image_editor.image()->move_layer_up(*active_layer);
-        },
-        window));
-    layer_menu.add_action(GUI::Action::create(
-        "Move active layer down", { Mod_Ctrl, Key_PageDown }, [&](auto&) {
-            auto active_layer = image_editor.active_layer();
-            if (!active_layer)
-                return;
-            image_editor.image()->move_layer_down(*active_layer);
-        },
-        window));
-    layer_menu.add_separator();
-    layer_menu.add_action(GUI::Action::create(
-        "Remove active layer", { Mod_Ctrl, Key_D }, [&](auto&) {
-            auto active_layer = image_editor.active_layer();
-            if (!active_layer)
-                return;
-            image_editor.image()->remove_layer(*active_layer);
-            image_editor.set_active_layer(nullptr);
-        },
-        window));
-
-    auto& filter_menu = menubar->add_menu("Filter");
-    auto& spatial_filters_menu = filter_menu.add_submenu("Spatial");
-
-    auto& edge_detect_submenu = spatial_filters_menu.add_submenu("Edge Detect");
-    edge_detect_submenu.add_action(GUI::Action::create("Laplacian (cardinal)", [&](auto&) {
-        if (auto* layer = image_editor.active_layer()) {
-            Gfx::LaplacianFilter filter;
-            if (auto parameters = PixelPaint::FilterParameters<Gfx::LaplacianFilter>::get(false)) {
-                filter.apply(layer->bitmap(), layer->rect(), layer->bitmap(), layer->rect(), *parameters);
-                image_editor.did_complete_action();
-            }
-        }
-    }));
-    edge_detect_submenu.add_action(GUI::Action::create("Laplacian (diagonal)", [&](auto&) {
-        if (auto* layer = image_editor.active_layer()) {
-            Gfx::LaplacianFilter filter;
-            if (auto parameters = PixelPaint::FilterParameters<Gfx::LaplacianFilter>::get(true)) {
-                filter.apply(layer->bitmap(), layer->rect(), layer->bitmap(), layer->rect(), *parameters);
-                image_editor.did_complete_action();
-            }
-        }
-    }));
-    auto& blur_submenu = spatial_filters_menu.add_submenu("Blur and Sharpen");
-    blur_submenu.add_action(GUI::Action::create("Gaussian Blur (3x3)", [&](auto&) {
-        if (auto* layer = image_editor.active_layer()) {
-            Gfx::SpatialGaussianBlurFilter<3> filter;
-            if (auto parameters = PixelPaint::FilterParameters<Gfx::SpatialGaussianBlurFilter<3>>::get()) {
-                filter.apply(layer->bitmap(), layer->rect(), layer->bitmap(), layer->rect(), *parameters);
-                image_editor.did_complete_action();
-            }
-        }
-    }));
-    blur_submenu.add_action(GUI::Action::create("Gaussian Blur (5x5)", [&](auto&) {
-        if (auto* layer = image_editor.active_layer()) {
-            Gfx::SpatialGaussianBlurFilter<5> filter;
-            if (auto parameters = PixelPaint::FilterParameters<Gfx::SpatialGaussianBlurFilter<5>>::get()) {
-                filter.apply(layer->bitmap(), layer->rect(), layer->bitmap(), layer->rect(), *parameters);
-                image_editor.did_complete_action();
-            }
-        }
-    }));
-    blur_submenu.add_action(GUI::Action::create("Box Blur (3x3)", [&](auto&) {
-        if (auto* layer = image_editor.active_layer()) {
-            Gfx::BoxBlurFilter<3> filter;
-            if (auto parameters = PixelPaint::FilterParameters<Gfx::BoxBlurFilter<3>>::get()) {
-                filter.apply(layer->bitmap(), layer->rect(), layer->bitmap(), layer->rect(), *parameters);
-                image_editor.did_complete_action();
-            }
-        }
-    }));
-    blur_submenu.add_action(GUI::Action::create("Box Blur (5x5)", [&](auto&) {
-        if (auto* layer = image_editor.active_layer()) {
-            Gfx::BoxBlurFilter<5> filter;
-            if (auto parameters = PixelPaint::FilterParameters<Gfx::BoxBlurFilter<5>>::get()) {
-                filter.apply(layer->bitmap(), layer->rect(), layer->bitmap(), layer->rect(), *parameters);
-                image_editor.did_complete_action();
-            }
-        }
-    }));
-    blur_submenu.add_action(GUI::Action::create("Sharpen", [&](auto&) {
-        if (auto* layer = image_editor.active_layer()) {
-            Gfx::SharpenFilter filter;
-            if (auto parameters = PixelPaint::FilterParameters<Gfx::SharpenFilter>::get()) {
-                filter.apply(layer->bitmap(), layer->rect(), layer->bitmap(), layer->rect(), *parameters);
-                image_editor.did_complete_action();
-            }
-        }
-    }));
-
-    spatial_filters_menu.add_separator();
-    spatial_filters_menu.add_action(GUI::Action::create("Generic 5x5 Convolution", [&](auto&) {
-        if (auto* layer = image_editor.active_layer()) {
-            Gfx::GenericConvolutionFilter<5> filter;
-            if (auto parameters = PixelPaint::FilterParameters<Gfx::GenericConvolutionFilter<5>>::get(window)) {
-                filter.apply(layer->bitmap(), layer->rect(), layer->bitmap(), layer->rect(), *parameters);
-                image_editor.did_complete_action();
-            }
-        }
-    }));
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("PixelPaint", app_icon, window));
-
-    app->set_menubar(move(menubar));
-
-    image_editor.on_active_layer_change = [&](auto* layer) {
-        layer_list_widget.set_selected_layer(layer);
-        layer_properties_widget.set_layer(layer);
-    };
-
-    auto image = PixelPaint::Image::create_with_size({ 640, 480 });
-
-    auto bg_layer = PixelPaint::Layer::create_with_size(*image, { 640, 480 }, "Background");
-    image->add_layer(*bg_layer);
-    bg_layer->bitmap().fill(Color::White);
-
-    auto fg_layer1 = PixelPaint::Layer::create_with_size(*image, { 200, 200 }, "FG Layer 1");
-    fg_layer1->set_location({ 50, 50 });
-    image->add_layer(*fg_layer1);
-    fg_layer1->bitmap().fill(Color::Yellow);
-
-    auto fg_layer2 = PixelPaint::Layer::create_with_size(*image, { 100, 100 }, "FG Layer 2");
-    fg_layer2->set_location({ 300, 300 });
-    image->add_layer(*fg_layer2);
-    fg_layer2->bitmap().fill(Color::Blue);
-
-    layer_list_widget.on_layer_select = [&](auto* layer) {
-        image_editor.set_active_layer(layer);
-    };
-
-    layer_list_widget.set_image(image);
-
-    image_editor.set_image(image);
-    image_editor.set_active_layer(bg_layer);
-
-    return app->exec();
-}
diff --git a/Applications/QuickShow/CMakeLists.txt b/Applications/QuickShow/CMakeLists.txt
deleted file mode 100644
index 8d2b46e217..0000000000
--- a/Applications/QuickShow/CMakeLists.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-set(SOURCES
-    main.cpp
-    QSWidget.cpp
-)
-
-serenity_app(QuickShow ICON filetype-image)
-target_link_libraries(QuickShow LibGUI LibGfx)
diff --git a/Applications/QuickShow/QSWidget.cpp b/Applications/QuickShow/QSWidget.cpp
deleted file mode 100644
index 94dbe858ea..0000000000
--- a/Applications/QuickShow/QSWidget.cpp
+++ /dev/null
@@ -1,283 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "QSWidget.h"
-#include <AK/StringBuilder.h>
-#include <LibCore/DirIterator.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/Orientation.h>
-#include <LibGfx/Palette.h>
-
-QSWidget::QSWidget()
-{
-    set_fill_with_background_color(false);
-}
-
-QSWidget::~QSWidget()
-{
-}
-
-void QSWidget::clear()
-{
-    m_bitmap = nullptr;
-    m_path = {};
-
-    set_scale(100);
-    update();
-}
-
-void QSWidget::flip(Gfx::Orientation orientation)
-{
-    m_bitmap = m_bitmap->flipped(orientation);
-    set_scale(m_scale);
-
-    resize_window();
-}
-
-void QSWidget::rotate(Gfx::RotationDirection rotation_direction)
-{
-    m_bitmap = m_bitmap->rotated(rotation_direction);
-    set_scale(m_scale);
-
-    resize_window();
-}
-
-void QSWidget::navigate(Directions direction)
-{
-    if (m_path == nullptr)
-        return;
-
-    auto parts = m_path.split('/');
-    parts.remove(parts.size() - 1);
-    StringBuilder sb;
-    sb.append("/");
-    sb.join("/", parts);
-    AK::String current_dir = sb.to_string();
-
-    if (m_files_in_same_dir.is_empty()) {
-        Core::DirIterator iterator(current_dir, Core::DirIterator::Flags::SkipDots);
-        while (iterator.has_next()) {
-            String file = iterator.next_full_path();
-            if (!Gfx::Bitmap::is_path_a_supported_image_format(file))
-                continue;
-            m_files_in_same_dir.append(file);
-        }
-    }
-
-    auto current_index = m_files_in_same_dir.find_first_index(m_path);
-    if (!current_index.has_value()) {
-        return;
-    }
-
-    size_t index = current_index.value();
-    if (direction == Directions::Back) {
-        if (index == 0) {
-            GUI::MessageBox::show(window(), "This is the first file.", "Cannot open image", GUI::MessageBox::Type::Error);
-            return;
-        }
-
-        index--;
-    } else if (direction == Directions::Forward) {
-        if (index == m_files_in_same_dir.size() - 1) {
-            GUI::MessageBox::show(window(), "This is the last file.", "Cannot open image", GUI::MessageBox::Type::Error);
-            return;
-        }
-
-        index++;
-    } else if (direction == Directions::First) {
-        index = 0;
-    } else if (direction == Directions::Last) {
-        index = m_files_in_same_dir.size() - 1;
-    }
-
-    this->load_from_file(m_files_in_same_dir.at(index));
-}
-
-void QSWidget::set_scale(int scale)
-{
-    if (m_bitmap.is_null())
-        return;
-
-    if (m_scale == scale) {
-        update();
-        return;
-    }
-
-    if (scale < 10)
-        scale = 10;
-    if (scale > 1000)
-        scale = 1000;
-
-    if (scale == 100)
-        m_pan_origin = { 0, 0 };
-
-    m_scale = scale;
-    float scale_factor = (float)m_scale / 100.0f;
-
-    Gfx::IntSize new_size;
-    new_size.set_width(m_bitmap->width() * scale_factor);
-    new_size.set_height(m_bitmap->height() * scale_factor);
-    m_bitmap_rect.set_size(new_size);
-
-    if (on_scale_change)
-        on_scale_change(m_scale, m_bitmap_rect);
-
-    relayout();
-}
-
-void QSWidget::relayout()
-{
-    if (m_bitmap.is_null())
-        return;
-
-    float scale_factor = (float)m_scale / 100.0f;
-    Gfx::IntSize new_size = m_bitmap_rect.size();
-
-    Gfx::IntPoint new_location;
-    new_location.set_x((width() / 2) - (new_size.width() / 2) - (m_pan_origin.x() * scale_factor));
-    new_location.set_y((height() / 2) - (new_size.height() / 2) - (m_pan_origin.y() * scale_factor));
-    m_bitmap_rect.set_location(new_location);
-
-    update();
-}
-
-void QSWidget::resize_event(GUI::ResizeEvent& event)
-{
-    relayout();
-    GUI::Widget::resize_event(event);
-}
-
-void QSWidget::doubleclick_event(GUI::MouseEvent&)
-{
-    on_doubleclick();
-}
-
-void QSWidget::paint_event(GUI::PaintEvent& event)
-{
-    Frame::paint_event(event);
-
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(event.rect());
-    painter.add_clip_rect(frame_inner_rect());
-
-    Gfx::StylePainter::paint_transparency_grid(painter, frame_inner_rect(), palette());
-
-    if (!m_bitmap.is_null())
-        painter.draw_scaled_bitmap(m_bitmap_rect, *m_bitmap, m_bitmap->rect());
-}
-
-void QSWidget::mousedown_event(GUI::MouseEvent& event)
-{
-    if (event.button() != GUI::MouseButton::Left)
-        return;
-    m_click_position = event.position();
-    m_saved_pan_origin = m_pan_origin;
-}
-
-void QSWidget::mouseup_event([[maybe_unused]] GUI::MouseEvent& event) { }
-
-void QSWidget::mousemove_event(GUI::MouseEvent& event)
-{
-    if (!(event.buttons() & GUI::MouseButton::Left))
-        return;
-
-    auto delta = event.position() - m_click_position;
-    float scale_factor = (float)m_scale / 100.0f;
-    m_pan_origin = m_saved_pan_origin.translated(
-        -delta.x() / scale_factor,
-        -delta.y() / scale_factor);
-
-    relayout();
-}
-
-void QSWidget::mousewheel_event(GUI::MouseEvent& event)
-{
-    int new_scale = m_scale - event.wheel_delta() * 10;
-    if (new_scale < 10)
-        new_scale = 10;
-    if (new_scale > 1000)
-        new_scale = 1000;
-
-    if (new_scale == m_scale) {
-        return;
-    }
-
-    auto old_scale_factor = (float)m_scale / 100.0f;
-    auto new_scale_factor = (float)new_scale / 100.0f;
-
-    auto focus_point = Gfx::FloatPoint(
-        m_pan_origin.x() - ((float)event.x() - (float)width() / 2.0) / old_scale_factor,
-        m_pan_origin.y() - ((float)event.y() - (float)height() / 2.0) / old_scale_factor);
-
-    m_pan_origin = Gfx::FloatPoint(
-        focus_point.x() - new_scale_factor / old_scale_factor * (focus_point.x() - m_pan_origin.x()),
-        focus_point.y() - new_scale_factor / old_scale_factor * (focus_point.y() - m_pan_origin.y()));
-
-    set_scale(new_scale);
-}
-
-void QSWidget::load_from_file(const String& path)
-{
-    auto bitmap = Gfx::Bitmap::load_from_file(path);
-    if (!bitmap) {
-        GUI::MessageBox::show(window(), String::formatted("Failed to open {}", path), "Cannot open image", GUI::MessageBox::Type::Error);
-        return;
-    }
-
-    m_path = path;
-    m_bitmap = bitmap;
-    m_scale = -1;
-    set_scale(100);
-}
-
-void QSWidget::drop_event(GUI::DropEvent& event)
-{
-    event.accept();
-    if (on_drop)
-        on_drop(event);
-}
-
-void QSWidget::resize_window()
-{
-    if (window()->is_fullscreen())
-        return;
-
-    if (!m_bitmap)
-        return;
-
-    auto new_size = m_bitmap->size();
-
-    if (new_size.width() < 300)
-        new_size.set_width(300);
-    if (new_size.height() < 200)
-        new_size.set_height(200);
-
-    new_size.set_height(new_size.height() + m_toolbar_height);
-    window()->resize(new_size);
-}
diff --git a/Applications/QuickShow/QSWidget.h b/Applications/QuickShow/QSWidget.h
deleted file mode 100644
index 047241e25e..0000000000
--- a/Applications/QuickShow/QSWidget.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Frame.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/Point.h>
-
-class QSLabel;
-
-class QSWidget final : public GUI::Frame {
-    C_OBJECT(QSWidget)
-public:
-    enum Directions {
-        First,
-        Back,
-        Forward,
-        Last
-    };
-
-    virtual ~QSWidget() override;
-
-    const Gfx::Bitmap* bitmap() const { return m_bitmap.ptr(); }
-    const String& path() const { return m_path; }
-    void set_scale(int);
-    int scale() { return m_scale; }
-    void set_toolbar_height(int height) { m_toolbar_height = height; }
-    int toolbar_height() { return m_toolbar_height; }
-
-    void clear();
-    void flip(Gfx::Orientation);
-    void rotate(Gfx::RotationDirection);
-    void navigate(Directions);
-    void load_from_file(const String&);
-
-    Function<void(int, Gfx::IntRect)> on_scale_change;
-    Function<void()> on_doubleclick;
-    Function<void(const GUI::DropEvent&)> on_drop;
-
-private:
-    QSWidget();
-    virtual void doubleclick_event(GUI::MouseEvent&) override;
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void resize_event(GUI::ResizeEvent&) override;
-    virtual void mousedown_event(GUI::MouseEvent&) override;
-    virtual void mouseup_event(GUI::MouseEvent&) override;
-    virtual void mousemove_event(GUI::MouseEvent&) override;
-    virtual void mousewheel_event(GUI::MouseEvent&) override;
-    virtual void drop_event(GUI::DropEvent&) override;
-
-    void relayout();
-    void resize_window();
-
-    String m_path;
-    RefPtr<Gfx::Bitmap> m_bitmap;
-    int m_toolbar_height { 28 };
-
-    Gfx::IntRect m_bitmap_rect;
-    int m_scale { -1 };
-    Gfx::FloatPoint m_pan_origin;
-
-    Gfx::IntPoint m_click_position;
-    Gfx::FloatPoint m_saved_pan_origin;
-    Vector<String> m_files_in_same_dir;
-};
diff --git a/Applications/QuickShow/main.cpp b/Applications/QuickShow/main.cpp
deleted file mode 100644
index 2319c24a9a..0000000000
--- a/Applications/QuickShow/main.cpp
+++ /dev/null
@@ -1,309 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "QSWidget.h"
-#include <AK/URL.h>
-#include <LibCore/ArgsParser.h>
-#include <LibCore/MimeData.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Clipboard.h>
-#include <LibGUI/Desktop.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/ToolBar.h>
-#include <LibGUI/ToolBarContainer.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/Palette.h>
-#include <LibGfx/Rect.h>
-#include <serenity.h>
-#include <spawn.h>
-#include <stdio.h>
-#include <string.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio shared_buffer accept cpath rpath wpath unix cpath fattr proc exec thread", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio shared_buffer accept cpath rpath wpath proc exec thread", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("filetype-image");
-
-    const char* path = nullptr;
-    Core::ArgsParser args_parser;
-    args_parser.add_positional_argument(path, "The image file to be displayed.", "file", Core::ArgsParser::Required::No);
-    args_parser.parse(argc, argv);
-
-    auto window = GUI::Window::construct();
-    window->set_double_buffering_enabled(true);
-    window->resize(300, 200);
-    window->set_icon(app_icon.bitmap_for_size(16));
-    window->set_title("QuickShow");
-
-    auto& root_widget = window->set_main_widget<GUI::Widget>();
-    root_widget.set_fill_with_background_color(true);
-    root_widget.set_layout<GUI::VerticalBoxLayout>();
-    root_widget.layout()->set_spacing(2);
-
-    auto& toolbar_container = root_widget.add<GUI::ToolBarContainer>();
-    auto& main_toolbar = toolbar_container.add<GUI::ToolBar>();
-
-    auto& widget = root_widget.add<QSWidget>();
-    widget.on_scale_change = [&](int scale, Gfx::IntRect rect) {
-        if (!widget.bitmap()) {
-            window->set_title("QuickShow");
-            return;
-        }
-
-        window->set_title(String::formatted("{} {} {}% - QuickShow", widget.path(), widget.bitmap()->size().to_string(), scale));
-
-        if (window->is_fullscreen())
-            return;
-
-        if (window->is_maximized())
-            return;
-
-        auto w = max(window->width(), rect.width() + 4);
-        auto h = max(window->height(), rect.height() + widget.toolbar_height() + 6);
-        window->resize(w, h);
-    };
-    widget.on_drop = [&](auto& event) {
-        window->move_to_front();
-
-        if (event.mime_data().has_urls()) {
-            auto urls = event.mime_data().urls();
-
-            if (!urls.is_empty()) {
-                auto url = urls.first();
-                widget.load_from_file(url.path());
-            }
-
-            pid_t child;
-            for (size_t i = 1; i < urls.size(); ++i) {
-                const char* argv[] = { "/bin/QuickShow", urls[i].path().characters(), nullptr };
-                if ((errno = posix_spawn(&child, "/bin/QuickShow", nullptr, nullptr, const_cast<char**>(argv), environ))) {
-                    perror("posix_spawn");
-                } else {
-                    if (disown(child) < 0)
-                        perror("disown");
-                }
-            }
-        }
-    };
-    widget.on_doubleclick = [&] {
-        window->set_fullscreen(!window->is_fullscreen());
-        toolbar_container.set_visible(!window->is_fullscreen());
-    };
-
-    // Actions
-    auto open_action = GUI::CommonActions::make_open_action(
-        [&](auto&) {
-            Optional<String> path = GUI::FilePicker::get_open_filepath(window, "Open image...");
-            if (path.has_value()) {
-                widget.load_from_file(path.value());
-            }
-        });
-
-    auto delete_action = GUI::CommonActions::make_delete_action(
-        [&](auto&) {
-            auto path = widget.path();
-            if (path.is_empty())
-                return;
-
-            auto msgbox_result = GUI::MessageBox::show(window,
-                String::formatted("Really delete {}?", path),
-                "Confirm deletion",
-                GUI::MessageBox::Type::Warning,
-                GUI::MessageBox::InputType::OKCancel);
-
-            if (msgbox_result == GUI::MessageBox::ExecCancel)
-                return;
-
-            auto unlink_result = unlink(widget.path().characters());
-            dbgln("unlink_result::{}", unlink_result);
-
-            if (unlink_result < 0) {
-                int saved_errno = errno;
-                GUI::MessageBox::show(window,
-                    String::formatted("unlink({}) failed: {}", path, strerror(saved_errno)),
-                    "Delete failed",
-                    GUI::MessageBox::Type::Error);
-
-                return;
-            }
-
-            widget.clear();
-        });
-
-    auto quit_action = GUI::CommonActions::make_quit_action(
-        [&](auto&) {
-            app->quit();
-        });
-
-    auto rotate_left_action = GUI::Action::create("Rotate Left", { Mod_None, Key_L },
-        [&](auto&) {
-            widget.rotate(Gfx::RotationDirection::Left);
-        });
-
-    auto rotate_right_action = GUI::Action::create("Rotate Right", { Mod_None, Key_R },
-        [&](auto&) {
-            widget.rotate(Gfx::RotationDirection::Right);
-        });
-
-    auto vertical_flip_action = GUI::Action::create("Vertical Flip", { Mod_None, Key_V },
-        [&](auto&) {
-            widget.flip(Gfx::Orientation::Vertical);
-        });
-
-    auto horizontal_flip_action = GUI::Action::create("Horizontal Flip", { Mod_None, Key_H },
-        [&](auto&) {
-            widget.flip(Gfx::Orientation::Horizontal);
-        });
-
-    auto desktop_wallpaper_action = GUI::Action::create("Set as desktop wallpaper",
-        [&](auto&) {
-            GUI::Desktop::the().set_wallpaper(widget.path());
-        });
-
-    auto go_first_action = GUI::Action::create("First", { Mod_None, Key_Home }, Gfx::Bitmap::load_from_file("/res/icons/16x16/go-first.png"),
-        [&](auto&) {
-            widget.navigate(QSWidget::Directions::First);
-        });
-
-    auto go_back_action = GUI::Action::create("Back", { Mod_None, Key_Left }, Gfx::Bitmap::load_from_file("/res/icons/16x16/go-back.png"),
-        [&](auto&) {
-            widget.navigate(QSWidget::Directions::Back);
-        });
-
-    auto go_forward_action = GUI::Action::create("Forward", { Mod_None, Key_Right }, Gfx::Bitmap::load_from_file("/res/icons/16x16/go-forward.png"),
-        [&](auto&) {
-            widget.navigate(QSWidget::Directions::Forward);
-        });
-
-    auto go_last_action = GUI::Action::create("Last", { Mod_None, Key_End }, Gfx::Bitmap::load_from_file("/res/icons/16x16/go-last.png"),
-        [&](auto&) {
-            widget.navigate(QSWidget::Directions::Last);
-        });
-
-    auto full_sceen_action = GUI::CommonActions::make_fullscreen_action(
-        [&](auto&) {
-            widget.on_doubleclick();
-        });
-
-    auto zoom_in_action = GUI::Action::create("Zoom In", { Mod_None, Key_Plus }, Gfx::Bitmap::load_from_file("/res/icons/16x16/zoom-in.png"),
-        [&](auto&) {
-            widget.set_scale(widget.scale() + 10);
-        });
-
-    auto zoom_reset_action = GUI::Action::create("Zoom 100%", { Mod_None, Key_0 }, Gfx::Bitmap::load_from_file("/res/icons/16x16/zoom-reset.png"),
-        [&](auto&) {
-            widget.set_scale(100);
-        });
-
-    auto zoom_out_action = GUI::Action::create("Zoom Out", { Mod_None, Key_Minus }, Gfx::Bitmap::load_from_file("/res/icons/16x16/zoom-out.png"),
-        [&](auto&) {
-            widget.set_scale(widget.scale() - 10);
-        });
-
-    auto hide_show_toolbar_action = GUI::Action::create("Hide/Show Toolbar", { Mod_Ctrl, Key_T },
-        [&](auto&) {
-            toolbar_container.set_visible(!toolbar_container.is_visible());
-        });
-
-    auto copy_action = GUI::CommonActions::make_copy_action([&](auto&) {
-        if (widget.bitmap())
-            GUI::Clipboard::the().set_bitmap(*widget.bitmap());
-    });
-
-    main_toolbar.add_action(open_action);
-    main_toolbar.add_action(delete_action);
-    main_toolbar.add_separator();
-    main_toolbar.add_action(go_first_action);
-    main_toolbar.add_action(go_back_action);
-    main_toolbar.add_action(go_forward_action);
-    main_toolbar.add_action(go_last_action);
-    main_toolbar.add_separator();
-    main_toolbar.add_action(zoom_in_action);
-    main_toolbar.add_action(zoom_reset_action);
-    main_toolbar.add_action(zoom_out_action);
-
-    auto menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = menubar->add_menu("QuickShow");
-    app_menu.add_action(open_action);
-    app_menu.add_action(delete_action);
-    app_menu.add_separator();
-    app_menu.add_action(quit_action);
-
-    auto& image_menu = menubar->add_menu("Image");
-    image_menu.add_action(rotate_left_action);
-    image_menu.add_action(rotate_right_action);
-    image_menu.add_action(vertical_flip_action);
-    image_menu.add_action(horizontal_flip_action);
-    image_menu.add_separator();
-    image_menu.add_action(desktop_wallpaper_action);
-
-    auto& navigate_menu = menubar->add_menu("Navigate");
-    navigate_menu.add_action(go_first_action);
-    navigate_menu.add_action(go_back_action);
-    navigate_menu.add_action(go_forward_action);
-    navigate_menu.add_action(go_last_action);
-
-    auto& view_menu = menubar->add_menu("View");
-    view_menu.add_action(full_sceen_action);
-    view_menu.add_separator();
-    view_menu.add_action(zoom_in_action);
-    view_menu.add_action(zoom_reset_action);
-    view_menu.add_action(zoom_out_action);
-    view_menu.add_separator();
-    view_menu.add_action(hide_show_toolbar_action);
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("QuickShow", app_icon, window));
-
-    app->set_menubar(move(menubar));
-
-    if (path != nullptr) {
-        widget.load_from_file(path);
-    }
-
-    window->show();
-
-    return app->exec();
-}
diff --git a/Applications/SoundPlayer/CMakeLists.txt b/Applications/SoundPlayer/CMakeLists.txt
deleted file mode 100644
index 99e1da4653..0000000000
--- a/Applications/SoundPlayer/CMakeLists.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-set(SOURCES
-    main.cpp
-    PlaybackManager.cpp
-    SampleWidget.cpp
-    SoundPlayerWidget.cpp
-)
-
-serenity_app(SoundPlayer ICON app-sound-player)
-target_link_libraries(SoundPlayer LibAudio LibGUI)
diff --git a/Applications/SoundPlayer/PlaybackManager.cpp b/Applications/SoundPlayer/PlaybackManager.cpp
deleted file mode 100644
index 1421e75215..0000000000
--- a/Applications/SoundPlayer/PlaybackManager.cpp
+++ /dev/null
@@ -1,188 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "PlaybackManager.h"
-
-PlaybackManager::PlaybackManager(NonnullRefPtr<Audio::ClientConnection> connection)
-    : m_connection(connection)
-{
-    m_timer = Core::Timer::construct(100, [&]() {
-        if (!m_loader)
-            return;
-        next_buffer();
-    });
-    m_timer->stop();
-}
-
-PlaybackManager::~PlaybackManager()
-{
-}
-
-void PlaybackManager::set_loader(NonnullRefPtr<Audio::Loader>&& loader)
-{
-    stop();
-    m_loader = loader;
-    if (m_loader) {
-        m_total_length = m_loader->total_samples() / static_cast<float>(m_loader->sample_rate());
-        m_timer->start();
-        load_next_buffer();
-    } else {
-        m_timer->stop();
-    }
-}
-
-void PlaybackManager::stop()
-{
-    set_paused(true);
-    m_connection->clear_buffer(true);
-    m_buffers.clear();
-    m_last_seek = 0;
-    m_next_buffer = nullptr;
-    m_current_buffer = nullptr;
-    m_next_ptr = 0;
-
-    if (m_loader)
-        m_loader->reset();
-}
-
-void PlaybackManager::play()
-{
-    set_paused(false);
-}
-
-void PlaybackManager::loop(bool loop)
-{
-    m_loop = loop;
-}
-
-void PlaybackManager::seek(const int position)
-{
-    if (!m_loader)
-        return;
-
-    m_last_seek = position;
-    bool paused_state = m_paused;
-    set_paused(true);
-
-    m_connection->clear_buffer(true);
-    m_next_buffer = nullptr;
-    m_current_buffer = nullptr;
-    m_next_ptr = 0;
-    m_buffers.clear();
-    m_loader->seek(position);
-
-    if (!paused_state)
-        set_paused(false);
-}
-
-void PlaybackManager::pause()
-{
-    set_paused(true);
-}
-
-void PlaybackManager::remove_dead_buffers()
-{
-    int id = m_connection->get_playing_buffer();
-    int current_id = -1;
-    if (m_current_buffer)
-        current_id = m_current_buffer->shbuf_id();
-
-    if (id >= 0 && id != current_id) {
-        while (!m_buffers.is_empty()) {
-            --m_next_ptr;
-            auto buffer = m_buffers.take_first();
-
-            if (buffer->shbuf_id() == id) {
-                m_current_buffer = buffer;
-                break;
-            }
-        }
-    }
-}
-
-void PlaybackManager::load_next_buffer()
-{
-    if (m_buffers.size() < 10) {
-        for (int i = 0; i < 20 && m_loader->loaded_samples() < m_loader->total_samples(); i++) {
-            auto buffer = m_loader->get_more_samples(PLAYBACK_MANAGER_BUFFER_SIZE);
-            if (buffer)
-                m_buffers.append(buffer);
-        }
-    }
-
-    if (m_next_ptr < m_buffers.size()) {
-        m_next_buffer = m_buffers.at(m_next_ptr++);
-    } else {
-        m_next_buffer = nullptr;
-    }
-}
-
-void PlaybackManager::set_paused(bool paused)
-{
-    if (!m_next_buffer && m_loader)
-        load_next_buffer();
-
-    m_paused = paused;
-    m_connection->set_paused(paused);
-}
-
-bool PlaybackManager::toggle_pause()
-{
-    if (m_paused) {
-        play();
-    } else {
-        pause();
-    }
-    return m_paused;
-}
-
-void PlaybackManager::next_buffer()
-{
-    if (on_update)
-        on_update();
-
-    if (m_paused)
-        return;
-
-    remove_dead_buffers();
-    if (!m_next_buffer) {
-        if (!m_connection->get_remaining_samples() && !m_paused) {
-            dbgln("Exhausted samples :^)");
-            if (m_loop)
-                seek(0);
-            else
-                stop();
-        }
-
-        return;
-    }
-
-    bool enqueued = m_connection->try_enqueue(*m_next_buffer);
-    if (!enqueued)
-        return;
-
-    load_next_buffer();
-}
diff --git a/Applications/SoundPlayer/PlaybackManager.h b/Applications/SoundPlayer/PlaybackManager.h
deleted file mode 100644
index 35be78fe9d..0000000000
--- a/Applications/SoundPlayer/PlaybackManager.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Vector.h>
-#include <LibAudio/Buffer.h>
-#include <LibAudio/ClientConnection.h>
-#include <LibAudio/Loader.h>
-#include <LibCore/Timer.h>
-
-#define PLAYBACK_MANAGER_BUFFER_SIZE 64 * KiB
-#define PLAYBACK_MANAGER_RATE 44100
-
-class PlaybackManager final {
-public:
-    PlaybackManager(NonnullRefPtr<Audio::ClientConnection>);
-    ~PlaybackManager();
-
-    void play();
-    void stop();
-    void pause();
-    void seek(const int position);
-    void loop(bool);
-    bool toggle_pause();
-    void set_loader(NonnullRefPtr<Audio::Loader>&&);
-
-    int last_seek() const { return m_last_seek; }
-    bool is_paused() const { return m_paused; }
-    float total_length() const { return m_total_length; }
-    RefPtr<Audio::Buffer> current_buffer() const { return m_current_buffer; }
-
-    NonnullRefPtr<Audio::ClientConnection> connection() const { return m_connection; }
-
-    Function<void()> on_update;
-
-private:
-    void next_buffer();
-    void set_paused(bool);
-    void load_next_buffer();
-    void remove_dead_buffers();
-
-    bool m_paused { true };
-    bool m_loop = { false };
-    size_t m_next_ptr { 0 };
-    size_t m_last_seek { 0 };
-    float m_total_length { 0 };
-    RefPtr<Audio::Loader> m_loader { nullptr };
-    NonnullRefPtr<Audio::ClientConnection> m_connection;
-    RefPtr<Audio::Buffer> m_next_buffer;
-    RefPtr<Audio::Buffer> m_current_buffer;
-    Vector<RefPtr<Audio::Buffer>> m_buffers;
-    RefPtr<Core::Timer> m_timer;
-};
diff --git a/Applications/SoundPlayer/SampleWidget.cpp b/Applications/SoundPlayer/SampleWidget.cpp
deleted file mode 100644
index b3884a175a..0000000000
--- a/Applications/SoundPlayer/SampleWidget.cpp
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "SampleWidget.h"
-#include <LibAudio/Buffer.h>
-#include <LibGUI/Painter.h>
-#include <math.h>
-
-SampleWidget::SampleWidget()
-{
-}
-
-SampleWidget::~SampleWidget()
-{
-}
-
-void SampleWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-    GUI::Painter painter(*this);
-
-    painter.add_clip_rect(event.rect());
-    painter.fill_rect(frame_inner_rect(), Color::Black);
-
-    float sample_max = 0;
-    int count = 0;
-    int x_offset = frame_inner_rect().x();
-    int x = x_offset;
-    int y_offset = frame_inner_rect().center().y();
-
-    if (m_buffer) {
-        int samples_per_pixel = m_buffer->sample_count() / frame_inner_rect().width();
-        for (int sample_index = 0; sample_index < m_buffer->sample_count() && (x - x_offset) < frame_inner_rect().width(); ++sample_index) {
-            float sample = fabsf((float)m_buffer->samples()[sample_index].left);
-
-            sample_max = max(sample, sample_max);
-            ++count;
-
-            if (count >= samples_per_pixel) {
-                Gfx::IntPoint min_point = { x, y_offset + static_cast<int>(-sample_max * frame_inner_rect().height() / 2) };
-                Gfx::IntPoint max_point = { x++, y_offset + static_cast<int>(sample_max * frame_inner_rect().height() / 2) };
-                painter.draw_line(min_point, max_point, Color::Green);
-
-                count = 0;
-                sample_max = 0;
-            }
-        }
-    } else {
-        painter.draw_line({ x, y_offset }, { frame_inner_rect().width(), y_offset }, Color::Green);
-    }
-}
-
-void SampleWidget::set_buffer(Audio::Buffer* buffer)
-{
-    if (m_buffer == buffer)
-        return;
-    m_buffer = buffer;
-    update();
-}
diff --git a/Applications/SoundPlayer/SampleWidget.h b/Applications/SoundPlayer/SampleWidget.h
deleted file mode 100644
index 7da9c20b38..0000000000
--- a/Applications/SoundPlayer/SampleWidget.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Frame.h>
-
-namespace Audio {
-class Buffer;
-}
-
-class SampleWidget final : public GUI::Frame {
-    C_OBJECT(SampleWidget)
-public:
-    virtual ~SampleWidget() override;
-
-    void set_buffer(Audio::Buffer*);
-
-private:
-    SampleWidget();
-    virtual void paint_event(GUI::PaintEvent&) override;
-
-    RefPtr<Audio::Buffer> m_buffer;
-};
diff --git a/Applications/SoundPlayer/SoundPlayerWidget.cpp b/Applications/SoundPlayer/SoundPlayerWidget.cpp
deleted file mode 100644
index f2066aca89..0000000000
--- a/Applications/SoundPlayer/SoundPlayerWidget.cpp
+++ /dev/null
@@ -1,194 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "SoundPlayerWidget.h"
-#include <AK/StringBuilder.h>
-#include <LibCore/MimeData.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/MessageBox.h>
-#include <math.h>
-
-SoundPlayerWidget::SoundPlayerWidget(GUI::Window& window, NonnullRefPtr<Audio::ClientConnection> connection)
-    : m_window(window)
-    , m_connection(connection)
-    , m_manager(connection)
-{
-    set_fill_with_background_color(true);
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins({ 2, 2, 2, 2 });
-
-    auto& status_widget = add<GUI::Widget>();
-    status_widget.set_fill_with_background_color(true);
-    status_widget.set_layout<GUI::HorizontalBoxLayout>();
-
-    m_elapsed = status_widget.add<GUI::Label>();
-    m_elapsed->set_frame_shape(Gfx::FrameShape::Container);
-    m_elapsed->set_frame_shadow(Gfx::FrameShadow::Sunken);
-    m_elapsed->set_frame_thickness(2);
-    m_elapsed->set_fixed_width(80);
-
-    auto& sample_widget_container = status_widget.add<GUI::Widget>();
-    sample_widget_container.set_layout<GUI::HorizontalBoxLayout>();
-
-    m_sample_widget = sample_widget_container.add<SampleWidget>();
-
-    m_remaining = status_widget.add<GUI::Label>();
-    m_remaining->set_frame_shape(Gfx::FrameShape::Container);
-    m_remaining->set_frame_shadow(Gfx::FrameShadow::Sunken);
-    m_remaining->set_frame_thickness(2);
-    m_remaining->set_fixed_width(80);
-
-    m_slider = add<Slider>(Orientation::Horizontal);
-    m_slider->set_min(0);
-    m_slider->set_enabled(false);
-    m_slider->on_knob_released = [&](int value) { m_manager.seek(denormalize_rate(value)); };
-
-    auto& control_widget = add<GUI::Widget>();
-    control_widget.set_fill_with_background_color(true);
-    control_widget.set_layout<GUI::HorizontalBoxLayout>();
-    control_widget.set_fixed_height(30);
-    control_widget.layout()->set_margins({ 10, 2, 10, 2 });
-    control_widget.layout()->set_spacing(10);
-
-    m_play = control_widget.add<GUI::Button>();
-    m_play->set_icon(*m_pause_icon);
-    m_play->set_enabled(false);
-    m_play->on_click = [this](auto) {
-        m_play->set_icon(m_manager.toggle_pause() ? *m_play_icon : *m_pause_icon);
-    };
-
-    m_stop = control_widget.add<GUI::Button>();
-    m_stop->set_enabled(false);
-    m_stop->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/stop.png"));
-    m_stop->on_click = [this](auto) { m_manager.stop(); };
-
-    m_status = add<GUI::Label>();
-    m_status->set_frame_shape(Gfx::FrameShape::Box);
-    m_status->set_frame_shadow(Gfx::FrameShadow::Raised);
-    m_status->set_frame_thickness(4);
-    m_status->set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    m_status->set_fixed_height(18);
-    m_status->set_text("No file open!");
-
-    update_position(0);
-
-    m_manager.on_update = [&]() { update_ui(); };
-}
-
-SoundPlayerWidget::~SoundPlayerWidget()
-{
-}
-
-SoundPlayerWidget::Slider::~Slider()
-{
-}
-
-void SoundPlayerWidget::hide_scope(bool hide)
-{
-    m_sample_widget->set_visible(!hide);
-}
-
-void SoundPlayerWidget::open_file(String path)
-{
-    NonnullRefPtr<Audio::Loader> loader = Audio::Loader::create(path);
-    if (loader->has_error() || !loader->sample_rate()) {
-        const String error_string = loader->error_string();
-        GUI::MessageBox::show(window(),
-            String::formatted("Failed to load audio file: {} ({})", path, error_string.is_null() ? "Unknown error" : error_string),
-            "Filetype error", GUI::MessageBox::Type::Error);
-        return;
-    }
-
-    m_sample_ratio = PLAYBACK_MANAGER_RATE / static_cast<float>(loader->sample_rate());
-
-    m_slider->set_max(normalize_rate(static_cast<int>(loader->total_samples())));
-    m_slider->set_enabled(true);
-    m_play->set_enabled(true);
-    m_stop->set_enabled(true);
-
-    m_window.set_title(String::formatted("{} - SoundPlayer", loader->file()->filename()));
-    m_status->set_text(String::formatted(
-        "Sample rate {}Hz, {} channel(s), {} bits per sample",
-        loader->sample_rate(),
-        loader->num_channels(),
-        loader->bits_per_sample()));
-
-    m_manager.set_loader(move(loader));
-    update_position(0);
-}
-
-void SoundPlayerWidget::drop_event(GUI::DropEvent& event)
-{
-    event.accept();
-    window()->move_to_front();
-
-    if (event.mime_data().has_urls()) {
-        auto urls = event.mime_data().urls();
-        if (urls.is_empty())
-            return;
-        open_file(urls.first().path());
-    }
-}
-
-int SoundPlayerWidget::normalize_rate(int rate) const
-{
-    return static_cast<int>(rate * m_sample_ratio);
-}
-
-int SoundPlayerWidget::denormalize_rate(int rate) const
-{
-    return static_cast<int>(rate / m_sample_ratio);
-}
-
-void SoundPlayerWidget::update_ui()
-{
-    m_sample_widget->set_buffer(m_manager.current_buffer());
-    m_play->set_icon(m_manager.is_paused() ? *m_play_icon : *m_pause_icon);
-    update_position(m_manager.connection()->get_played_samples());
-}
-
-void SoundPlayerWidget::update_position(const int position)
-{
-    int total_norm_samples = position + normalize_rate(m_manager.last_seek());
-    float seconds = (total_norm_samples / static_cast<float>(PLAYBACK_MANAGER_RATE));
-    float remaining_seconds = m_manager.total_length() - seconds;
-
-    m_elapsed->set_text(String::formatted(
-        "Elapsed:\n{}:{:02}.{:02}",
-        static_cast<int>(seconds / 60),
-        static_cast<int>(seconds) % 60,
-        static_cast<int>(seconds * 100) % 100));
-
-    m_remaining->set_text(String::formatted(
-        "Remaining:\n{}:{:02}.{:02}",
-        static_cast<int>(remaining_seconds / 60),
-        static_cast<int>(remaining_seconds) % 60,
-        static_cast<int>(remaining_seconds * 100) % 100));
-
-    m_slider->set_value(total_norm_samples);
-}
diff --git a/Applications/SoundPlayer/SoundPlayerWidget.h b/Applications/SoundPlayer/SoundPlayerWidget.h
deleted file mode 100644
index ab7bc60aea..0000000000
--- a/Applications/SoundPlayer/SoundPlayerWidget.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "PlaybackManager.h"
-#include "SampleWidget.h"
-#include <LibGUI/Button.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Slider.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-
-class SoundPlayerWidget final : public GUI::Widget {
-    C_OBJECT(SoundPlayerWidget)
-public:
-    virtual ~SoundPlayerWidget() override;
-    void open_file(String path);
-    void hide_scope(bool);
-    PlaybackManager& manager() { return m_manager; }
-
-private:
-    explicit SoundPlayerWidget(GUI::Window&, NonnullRefPtr<Audio::ClientConnection>);
-
-    virtual void drop_event(GUI::DropEvent&) override;
-
-    void update_position(const int position);
-    void update_ui();
-    int normalize_rate(int) const;
-    int denormalize_rate(int) const;
-
-    class Slider final : public GUI::Slider {
-        C_OBJECT(Slider)
-    public:
-        virtual ~Slider() override;
-        Function<void(int)> on_knob_released;
-        void set_value(int value)
-        {
-            if (!knob_dragging())
-                GUI::Slider::set_value(value);
-        }
-
-    protected:
-        Slider(Orientation orientation)
-            : GUI::Slider(orientation)
-        {
-        }
-
-        virtual void mouseup_event(GUI::MouseEvent& event) override
-        {
-            if (on_knob_released && is_enabled())
-                on_knob_released(value());
-
-            GUI::Slider::mouseup_event(event);
-        }
-    };
-
-    GUI::Window& m_window;
-    NonnullRefPtr<Audio::ClientConnection> m_connection;
-    PlaybackManager m_manager;
-    float m_sample_ratio { 1.0 };
-    RefPtr<GUI::Label> m_status;
-    RefPtr<GUI::Label> m_elapsed;
-    RefPtr<GUI::Label> m_remaining;
-    RefPtr<Slider> m_slider;
-    RefPtr<SampleWidget> m_sample_widget;
-    RefPtr<Gfx::Bitmap> m_play_icon { Gfx::Bitmap::load_from_file("/res/icons/16x16/play.png") };
-    RefPtr<Gfx::Bitmap> m_pause_icon { Gfx::Bitmap::load_from_file("/res/icons/16x16/pause.png") };
-    RefPtr<GUI::Button> m_play;
-    RefPtr<GUI::Button> m_stop;
-};
diff --git a/Applications/SoundPlayer/main.cpp b/Applications/SoundPlayer/main.cpp
deleted file mode 100644
index 47dbd555c8..0000000000
--- a/Applications/SoundPlayer/main.cpp
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "SoundPlayerWidget.h"
-#include <LibAudio/ClientConnection.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/CharacterBitmap.h>
-#include <stdio.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio shared_buffer accept rpath thread unix cpath fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio shared_buffer accept rpath thread unix", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto audio_client = Audio::ClientConnection::construct();
-    audio_client->handshake();
-
-    if (pledge("stdio shared_buffer accept rpath thread", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-sound-player");
-
-    auto window = GUI::Window::construct();
-    window->set_title("Sound Player");
-    window->set_resizable(false);
-    window->resize(350, 140);
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    auto menubar = GUI::MenuBar::construct();
-    auto& app_menu = menubar->add_menu("Sound Player");
-    auto& player = window->set_main_widget<SoundPlayerWidget>(window, audio_client);
-
-    if (argc > 1) {
-        String path = argv[1];
-        player.open_file(path);
-        player.manager().play();
-    }
-
-    auto hide_scope = GUI::Action::create_checkable("Hide scope", { Mod_Ctrl, Key_H }, [&](auto& action) {
-        player.hide_scope(action.is_checked());
-    });
-
-    app_menu.add_action(GUI::CommonActions::make_open_action([&](auto&) {
-        Optional<String> path = GUI::FilePicker::get_open_filepath(window, "Open sound file...");
-        if (path.has_value()) {
-            player.open_file(path.value());
-        }
-    }));
-    app_menu.add_action(move(hide_scope));
-    app_menu.add_separator();
-    app_menu.add_action(GUI::CommonActions::make_quit_action([&](auto&) {
-        app->quit();
-    }));
-
-    auto& playback_menu = menubar->add_menu("Playback");
-
-    auto loop = GUI::Action::create_checkable("Loop", { Mod_Ctrl, Key_R }, [&](auto& action) {
-        player.manager().loop(action.is_checked());
-    });
-
-    playback_menu.add_action(move(loop));
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Sound Player", app_icon, window));
-
-    app->set_menubar(move(menubar));
-
-    window->show();
-    return app->exec();
-}
diff --git a/Applications/SpaceAnalyzer/CMakeLists.txt b/Applications/SpaceAnalyzer/CMakeLists.txt
deleted file mode 100644
index 23cc18f13e..0000000000
--- a/Applications/SpaceAnalyzer/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-compile_gml(SpaceAnalyzer.gml SpaceAnalyzerGML.h space_analyzer_gml)
-
-set(SOURCES
-    main.cpp
-    TreeMapWidget.cpp
-    SpaceAnalyzerGML.h
-)
-
-serenity_app(SpaceAnalyzer ICON app-space-analyzer)
-target_link_libraries(SpaceAnalyzer LibGfx LibGUI)
diff --git a/Applications/SpaceAnalyzer/SpaceAnalyzer.gml b/Applications/SpaceAnalyzer/SpaceAnalyzer.gml
deleted file mode 100644
index a4a3363c6a..0000000000
--- a/Applications/SpaceAnalyzer/SpaceAnalyzer.gml
+++ /dev/null
@@ -1,20 +0,0 @@
-@GUI::Widget {
-	layout: @GUI::VerticalBoxLayout {
-		spacing: 0
-	}
-	
-	@GUI::ToolBarContainer {
-		@GUI::BreadcrumbBar {
-			fixed_height: 25
-			name: "breadcrumb_bar"
-		}
-	}
-	
-	@SpaceAnalyzer::TreeMapWidget {
-		name: "tree_map"
-	}
-	
-	@GUI::StatusBar {
-		name: "status_bar"
-	}
-}
diff --git a/Applications/SpaceAnalyzer/TreeMapWidget.cpp b/Applications/SpaceAnalyzer/TreeMapWidget.cpp
deleted file mode 100644
index 97d9b58a9e..0000000000
--- a/Applications/SpaceAnalyzer/TreeMapWidget.cpp
+++ /dev/null
@@ -1,376 +0,0 @@
-/*
- * Copyright (c) 2021, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "TreeMapWidget.h"
-#include <AK/NumberFormat.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/WindowServerConnection.h>
-#include <LibGfx/Font.h>
-#include <WindowServer/WindowManager.h>
-
-namespace SpaceAnalyzer {
-
-REGISTER_WIDGET(SpaceAnalyzer, TreeMapWidget)
-
-TreeMapWidget::TreeMapWidget()
-    : m_viewpoint(0)
-{
-}
-
-TreeMapWidget::~TreeMapWidget()
-{
-}
-
-static const Color colors[] = {
-    Color(253, 231, 37),
-    Color(148, 216, 64),
-    Color(60, 188, 117),
-    Color(31, 150, 139),
-    Color(45, 112, 142),
-    Color(63, 71, 136),
-    Color(85, 121, 104),
-};
-
-static float get_normalized_aspect_ratio(float a, float b)
-{
-    if (a < b) {
-        return a / b;
-    } else {
-        return b / a;
-    }
-}
-
-static bool node_is_leaf(const TreeMapNode& node)
-{
-    return node.num_children() == 0;
-}
-
-bool TreeMapWidget::rect_can_contain_label(const Gfx::IntRect& rect) const
-{
-    return rect.height() > font().presentation_size() && rect.width() > 20;
-}
-
-bool TreeMapWidget::rect_can_contain_children(const Gfx::IntRect& rect) const
-{
-    return rect.height() > 10 && rect.width() > 10;
-}
-
-Gfx::IntRect TreeMapWidget::inner_rect_for_frame(const Gfx::IntRect& rect) const
-{
-    const int margin = 5;
-    Gfx::IntRect tmp_rect = rect;
-    tmp_rect.shrink(2, 2); // border
-    tmp_rect.shrink(2, 2); // shading
-    if (rect_can_contain_label(rect)) {
-        tmp_rect.set_y(tmp_rect.y() + font().presentation_size() + margin);
-        tmp_rect.set_height(tmp_rect.height() - (font().presentation_size() + margin * 2));
-        tmp_rect.set_x(tmp_rect.x() + margin);
-        tmp_rect.set_width(tmp_rect.width() - margin * 2);
-    }
-    return tmp_rect;
-}
-
-void TreeMapWidget::paint_cell_frame(GUI::Painter& painter, const TreeMapNode& node, const Gfx::IntRect& cell_rect, int depth, bool fill_frame) const
-{
-    const Gfx::IntRect border_rect = cell_rect.shrunken(2, 2);
-    const Gfx::IntRect outer_rect = border_rect.shrunken(2, 2);
-    const Gfx::IntRect inner_rect = inner_rect_for_frame(cell_rect);
-
-    painter.clear_clip_rect();
-    painter.add_clip_rect(cell_rect);
-    Color color = colors[depth % (sizeof(colors) / sizeof(colors[0]))];
-    if (m_selected_node_cache == &node) {
-        color = color.darkened(0.8f);
-    }
-
-    // Draw borders.
-    painter.draw_rect(cell_rect, Color::Black, false);
-    painter.draw_line(border_rect.bottom_left(), border_rect.top_left(), color.lightened());
-    painter.draw_line(border_rect.top_left(), border_rect.top_right(), color.lightened());
-    painter.draw_line(border_rect.top_right(), border_rect.bottom_right(), color.darkened());
-    painter.draw_line(border_rect.bottom_left(), border_rect.bottom_right(), color.darkened());
-
-    // Paint the background.
-    if (fill_frame) {
-        painter.fill_rect(outer_rect, color);
-    } else {
-        for (auto& shard : outer_rect.shatter(inner_rect)) {
-            painter.fill_rect(shard, color);
-        }
-    }
-
-    // Paint text.
-    if (rect_can_contain_label(outer_rect)) {
-        Gfx::IntRect text_rect = outer_rect;
-        text_rect.move_by(2, 2);
-        painter.draw_text(text_rect, node.name(), font(), Gfx::TextAlignment::TopLeft, Color::Black);
-        if (node_is_leaf(node)) {
-            text_rect.move_by(0, font().presentation_size() + 1);
-            painter.draw_text(text_rect, human_readable_size(node.area()), font(), Gfx::TextAlignment::TopLeft, Color::Black);
-        }
-    }
-}
-
-template<typename Function>
-void TreeMapWidget::lay_out_children(const TreeMapNode& node, const Gfx::IntRect& rect, int depth, Function callback)
-{
-    if (node.num_children() == 0) {
-        return;
-    }
-
-    // Check if the children are sorted yet, if not do that now.
-    for (size_t k = 0; k < node.num_children() - 1; k++) {
-        if (node.child_at(k).area() < node.child_at(k + 1).area()) {
-            node.sort_children_by_area();
-            break;
-        }
-    }
-
-    int total_area = node.area();
-    Gfx::IntRect canvas = rect;
-    bool remaining_nodes_are_too_small = false;
-    for (size_t i = 0; !remaining_nodes_are_too_small && i < node.num_children(); i++) {
-        const int i_node_area = node.child_at(i).area();
-        if (i_node_area == 0)
-            break;
-
-        const int long_side_size = max(canvas.width(), canvas.height());
-        const int short_side_size = min(canvas.width(), canvas.height());
-
-        int row_or_column_size = (long long int)long_side_size * i_node_area / total_area;
-        int node_area_sum = i_node_area;
-        size_t k = i + 1;
-
-        // Try to add nodes to this row or column so long as the worst aspect ratio of
-        // the new set of nodes is better than the worst aspect ratio of the current set.
-        {
-            float best_worst_aspect_ratio_so_far = get_normalized_aspect_ratio(row_or_column_size, short_side_size);
-            for (; k < node.num_children(); k++) {
-                // Do a preliminary calculation of the worst aspect ratio of the nodes at index i and k
-                // if that aspect ratio is better than the 'best_worst_aspect_ratio_so_far' we keep it,
-                // otherwise it is discarded.
-                int k_node_area = node.child_at(k).area();
-                if (k_node_area == 0) {
-                    break;
-                }
-                int new_node_area_sum = node_area_sum + k_node_area;
-                int new_row_or_column_size = (long long int)long_side_size * new_node_area_sum / total_area;
-                int i_node_size = (long long int)short_side_size * i_node_area / new_node_area_sum;
-                int k_node_size = (long long int)short_side_size * k_node_area / new_node_area_sum;
-                float i_node_aspect_ratio = get_normalized_aspect_ratio(new_row_or_column_size, i_node_size);
-                float k_node_aspect_ratio = get_normalized_aspect_ratio(new_row_or_column_size, k_node_size);
-                float new_worst_aspect_ratio = min(i_node_aspect_ratio, k_node_aspect_ratio);
-                if (new_worst_aspect_ratio < best_worst_aspect_ratio_so_far) {
-                    break;
-                }
-                best_worst_aspect_ratio_so_far = new_worst_aspect_ratio;
-                node_area_sum = new_node_area_sum;
-                row_or_column_size = new_row_or_column_size;
-            }
-        }
-
-        // Paint the elements from 'i' up to and including 'k-1'.
-        {
-            const int fixed_side_size = row_or_column_size;
-            int placement_area = node_area_sum;
-            int main_dim = short_side_size;
-
-            // Lay out nodes in a row or column.
-            Orientation orientation = canvas.width() > canvas.height() ? Orientation::Horizontal : Orientation::Vertical;
-            Gfx::IntRect layout_rect = canvas;
-            layout_rect.set_primary_size_for_orientation(orientation, fixed_side_size);
-            for (size_t q = i; q < k; q++) {
-                auto& child = node.child_at(q);
-                int node_size = (long long int)main_dim * child.area() / placement_area;
-                Gfx::IntRect cell_rect = layout_rect;
-                cell_rect.set_secondary_size_for_orientation(orientation, node_size);
-                Gfx::IntRect inner_rect = inner_rect_for_frame(cell_rect);
-                bool is_visual_leaf = child.num_children() == 0 || !rect_can_contain_children(inner_rect);
-                callback(child, q, cell_rect, depth, is_visual_leaf ? IsVisualLeaf::Yes : IsVisualLeaf::No, IsRemainder::No);
-                if (cell_rect.width() * cell_rect.height() < 16) {
-                    remaining_nodes_are_too_small = true;
-                } else {
-                    lay_out_children(child, inner_rect, depth + 1, callback);
-                }
-                layout_rect.set_secondary_offset_for_orientation(orientation, layout_rect.secondary_offset_for_orientation(orientation) + node_size);
-                main_dim -= node_size;
-                placement_area -= child.area();
-            }
-            canvas.set_primary_offset_for_orientation(orientation, canvas.primary_offset_for_orientation(orientation) + fixed_side_size);
-            canvas.set_primary_size_for_orientation(orientation, canvas.primary_size_for_orientation(orientation) - fixed_side_size);
-        }
-
-        // Consume nodes that were added to this row or column.
-        i = k - 1;
-        total_area -= node_area_sum;
-    }
-
-    // If not the entire canvas was filled with nodes, fill the remaining area with a dither pattern.
-    if (!canvas.is_empty()) {
-        callback(node, 0, canvas, depth, IsVisualLeaf::No, IsRemainder::Yes);
-    }
-}
-
-const TreeMapNode* TreeMapWidget::path_node(size_t n) const
-{
-    if (!m_tree.ptr())
-        return nullptr;
-    const TreeMapNode* iter = &m_tree->root();
-    size_t path_index = 0;
-    while (iter && path_index < m_path.size() && path_index < n) {
-        size_t child_index = m_path[path_index];
-        if (child_index >= iter->num_children()) {
-            return nullptr;
-        }
-        iter = &iter->child_at(child_index);
-        path_index++;
-    }
-    return iter;
-}
-
-void TreeMapWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-    GUI::Painter painter(*this);
-
-    m_selected_node_cache = path_node(m_path.size());
-
-    const TreeMapNode* node = path_node(m_viewpoint);
-    if (!node) {
-        painter.fill_rect(frame_inner_rect(), Color::MidGray);
-    } else if (node_is_leaf(*node)) {
-        paint_cell_frame(painter, *node, frame_inner_rect(), m_viewpoint - 1, true);
-    } else {
-        lay_out_children(*node, frame_inner_rect(), m_viewpoint, [&](const TreeMapNode& node, int, const Gfx::IntRect& rect, int depth, IsVisualLeaf visual_leaf, IsRemainder remainder) {
-            if (remainder == IsRemainder::No) {
-                bool fill = visual_leaf == IsVisualLeaf::Yes ? true : false;
-                paint_cell_frame(painter, node, rect, depth, fill);
-            } else {
-                Color color = colors[depth % (sizeof(colors) / sizeof(colors[0]))];
-                painter.clear_clip_rect();
-                painter.add_clip_rect(rect);
-                painter.draw_rect(rect, Color::Black);
-                painter.fill_rect_with_dither_pattern(rect.shrunken(2, 2), color, Color::Black);
-            }
-        });
-    }
-}
-
-Vector<int> TreeMapWidget::path_to_position(const Gfx::IntPoint& position)
-{
-    const TreeMapNode* node = path_node(m_viewpoint);
-    if (!node) {
-        return {};
-    }
-    Vector<int> path;
-    lay_out_children(*node, frame_inner_rect(), m_viewpoint, [&](const TreeMapNode&, int index, const Gfx::IntRect& rect, int, IsVisualLeaf, IsRemainder is_remainder) {
-        if (is_remainder == IsRemainder::No && rect.contains(position)) {
-            path.append(index);
-        }
-    });
-    return path;
-}
-
-void TreeMapWidget::mousedown_event(GUI::MouseEvent& event)
-{
-    const TreeMapNode* node = path_node(m_viewpoint);
-    if (node && !node_is_leaf(*node)) {
-        Vector<int> path = path_to_position(event.position());
-        if (!path.is_empty()) {
-            m_path.shrink(m_viewpoint);
-            m_path.append(path);
-            if (on_path_change) {
-                on_path_change();
-            }
-            update();
-        }
-    }
-}
-
-void TreeMapWidget::doubleclick_event(GUI::MouseEvent& event)
-{
-    const TreeMapNode* node = path_node(m_viewpoint);
-    if (node && !node_is_leaf(*node)) {
-        Vector<int> path = path_to_position(event.position());
-        m_path.shrink(m_viewpoint);
-        m_path.append(path);
-        m_viewpoint = m_path.size();
-        if (on_path_change) {
-            on_path_change();
-        }
-        update();
-    }
-}
-
-void TreeMapWidget::mousewheel_event(GUI::MouseEvent& event)
-{
-    int delta = event.wheel_delta();
-    // FIXME: The wheel_delta is premultiplied in the window server, we actually want a raw value here.
-    int step_size = GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::GetScrollStepSize>()->step_size();
-    if (delta > 0) {
-        size_t step_back = delta / step_size;
-        if (step_back > m_viewpoint)
-            step_back = m_viewpoint;
-        set_viewpoint(m_viewpoint - step_back);
-    } else {
-        size_t step_up = (-delta) / step_size;
-        set_viewpoint(m_viewpoint + step_up);
-    }
-}
-
-void TreeMapWidget::set_tree(RefPtr<TreeMap> tree)
-{
-    m_tree = tree;
-    m_path.clear();
-    m_viewpoint = 0;
-    if (on_path_change) {
-        on_path_change();
-    }
-    update();
-}
-
-void TreeMapWidget::set_viewpoint(size_t viewpoint)
-{
-    if (viewpoint > m_path.size())
-        viewpoint = m_path.size();
-    m_viewpoint = viewpoint;
-    if (on_path_change) {
-        on_path_change();
-    }
-    update();
-}
-
-size_t TreeMapWidget::path_size() const
-{
-    return m_path.size() + 1;
-}
-
-size_t TreeMapWidget::viewpoint() const
-{
-    return m_viewpoint;
-}
-
-}
diff --git a/Applications/SpaceAnalyzer/TreeMapWidget.h b/Applications/SpaceAnalyzer/TreeMapWidget.h
deleted file mode 100644
index 8b4e1e9269..0000000000
--- a/Applications/SpaceAnalyzer/TreeMapWidget.h
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * Copyright (c) 2021, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Frame.h>
-#include <LibGfx/Rect.h>
-
-namespace SpaceAnalyzer {
-
-struct TreeMapNode {
-    virtual String name() const = 0;
-    virtual int64_t area() const = 0;
-    virtual size_t num_children() const = 0;
-    virtual const TreeMapNode& child_at(size_t i) const = 0;
-    virtual void sort_children_by_area() const = 0;
-};
-
-struct TreeMap : public RefCounted<TreeMap> {
-    virtual ~TreeMap() { }
-    virtual const TreeMapNode& root() const = 0;
-};
-
-class TreeMapWidget final : public GUI::Frame {
-    C_OBJECT(TreeMapWidget)
-
-public:
-    virtual ~TreeMapWidget() override;
-    Function<void()> on_path_change;
-    size_t path_size() const;
-    const TreeMapNode* path_node(size_t n) const;
-    size_t viewpoint() const;
-    void set_viewpoint(size_t);
-    void set_tree(RefPtr<TreeMap> tree);
-
-private:
-    TreeMapWidget();
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void mousedown_event(GUI::MouseEvent&) override;
-    virtual void doubleclick_event(GUI::MouseEvent&) override;
-    virtual void mousewheel_event(GUI::MouseEvent&) override;
-
-    bool rect_can_contain_children(const Gfx::IntRect& rect) const;
-    bool rect_can_contain_label(const Gfx::IntRect& rect) const;
-    Gfx::IntRect inner_rect_for_frame(const Gfx::IntRect& rect) const;
-
-    enum class IsVisualLeaf {
-        Yes,
-        No
-    };
-    enum class IsRemainder {
-        Yes,
-        No
-    };
-
-    template<typename Function>
-    void lay_out_children(const TreeMapNode&, const Gfx::IntRect&, int depth, Function);
-    void paint_cell_frame(GUI::Painter&, const TreeMapNode&, const Gfx::IntRect&, int depth, bool fill) const;
-    Vector<int> path_to_position(const Gfx::IntPoint&);
-
-    RefPtr<TreeMap> m_tree;
-    Vector<int> m_path;
-    size_t m_viewpoint;
-    const void* m_selected_node_cache;
-};
-
-}
diff --git a/Applications/SpaceAnalyzer/main.cpp b/Applications/SpaceAnalyzer/main.cpp
deleted file mode 100644
index 2ce061f786..0000000000
--- a/Applications/SpaceAnalyzer/main.cpp
+++ /dev/null
@@ -1,300 +0,0 @@
-/*
- * Copyright (c) 2021, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "TreeMapWidget.h"
-#include <AK/Queue.h>
-#include <AK/QuickSort.h>
-#include <AK/RefCounted.h>
-#include <Applications/SpaceAnalyzer/SpaceAnalyzerGML.h>
-#include <LibCore/DirIterator.h>
-#include <LibCore/File.h>
-#include <LibGUI/AboutDialog.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BreadcrumbBar.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/StatusBar.h>
-#include <sys/stat.h>
-
-static const char* APP_NAME = "Space Analyzer";
-
-struct TreeNode : public SpaceAnalyzer::TreeMapNode {
-    TreeNode(String name)
-        : m_name(move(name)) {};
-
-    virtual String name() const { return m_name; }
-    virtual int64_t area() const { return m_area; }
-    virtual size_t num_children() const
-    {
-        if (m_children) {
-            return m_children->size();
-        }
-        return 0;
-    }
-    virtual const TreeNode& child_at(size_t i) const { return m_children->at(i); }
-    virtual void sort_children_by_area() const
-    {
-        if (m_children) {
-            Vector<TreeNode>* children = const_cast<Vector<TreeNode>*>(m_children.ptr());
-            quick_sort(*children, [](auto& a, auto& b) { return b.m_area < a.m_area; });
-        }
-    }
-
-    String m_name;
-    int64_t m_area { 0 };
-    OwnPtr<Vector<TreeNode>> m_children;
-};
-
-struct Tree : public SpaceAnalyzer::TreeMap {
-    Tree(String root_name)
-        : m_root(move(root_name)) {};
-    virtual ~Tree() {};
-    TreeNode m_root;
-    virtual const SpaceAnalyzer::TreeMapNode& root() const override
-    {
-        return m_root;
-    };
-};
-
-struct MountInfo {
-    String mount_point;
-    String source;
-};
-
-static void fill_mounts(Vector<MountInfo>& output)
-{
-    // Output info about currently mounted filesystems.
-    auto df = Core::File::construct("/proc/df");
-    if (!df->open(Core::IODevice::ReadOnly)) {
-        fprintf(stderr, "Failed to open /proc/df: %s\n", df->error_string());
-        return;
-    }
-
-    auto content = df->read_all();
-    auto json = JsonValue::from_string(content);
-    ASSERT(json.has_value());
-
-    json.value().as_array().for_each([&output](auto& value) {
-        auto filesystem_object = value.as_object();
-        MountInfo mount_info;
-        mount_info.mount_point = filesystem_object.get("mount_point").to_string();
-        mount_info.source = filesystem_object.get("source").as_string_or("none");
-        output.append(mount_info);
-    });
-}
-
-static MountInfo* find_mount_for_path(String path, Vector<MountInfo>& mounts)
-{
-    MountInfo* result = nullptr;
-    size_t length = 0;
-    for (auto& mount_info : mounts) {
-        String& mount_point = mount_info.mount_point;
-        if (path.starts_with(mount_point)) {
-            if (!result || mount_point.length() > length) {
-                result = &mount_info;
-                length = mount_point.length();
-            }
-        }
-    }
-    return result;
-}
-
-static long long int update_totals(TreeNode& node)
-{
-    long long int result = 0;
-    if (node.m_children) {
-        for (auto& child : *node.m_children) {
-            result += update_totals(child);
-        }
-        node.m_area = result;
-    } else {
-        result = node.m_area;
-    }
-    return result;
-}
-
-struct QueueEntry {
-    QueueEntry(String path, TreeNode* node)
-        : path(move(path))
-        , node(node) {};
-    String path;
-    TreeNode* node { nullptr };
-};
-
-static void populate_filesize_tree(TreeNode& root, Vector<MountInfo>& mounts, HashMap<int, int>& error_accumulator)
-{
-    ASSERT(!root.m_name.ends_with("/"));
-
-    Queue<QueueEntry> queue;
-    queue.enqueue(QueueEntry(root.m_name, &root));
-
-    StringBuilder builder = StringBuilder();
-    builder.append(root.m_name);
-    builder.append("/");
-    MountInfo* root_mount_info = find_mount_for_path(builder.to_string(), mounts);
-    if (!root_mount_info) {
-        return;
-    }
-    while (!queue.is_empty()) {
-        QueueEntry queue_entry = queue.dequeue();
-
-        builder.clear();
-        builder.append(queue_entry.path);
-        builder.append("/");
-
-        MountInfo* mount_info = find_mount_for_path(builder.to_string(), mounts);
-        if (!mount_info || (mount_info != root_mount_info && mount_info->source != root_mount_info->source)) {
-            continue;
-        }
-
-        Core::DirIterator dir_iterator(builder.to_string(), Core::DirIterator::SkipParentAndBaseDir);
-        if (dir_iterator.has_error()) {
-            int error_sum = error_accumulator.get(dir_iterator.error()).value_or(0);
-            error_accumulator.set(dir_iterator.error(), error_sum + 1);
-        } else {
-            queue_entry.node->m_children = make<Vector<TreeNode>>();
-            while (dir_iterator.has_next()) {
-                queue_entry.node->m_children->append(TreeNode(dir_iterator.next_path()));
-            }
-            for (auto& child : *queue_entry.node->m_children) {
-                String& name = child.m_name;
-                int name_len = name.length();
-                builder.append(name);
-                struct stat st;
-                int stat_result = lstat(builder.to_string().characters(), &st);
-                if (stat_result < 0) {
-                    int error_sum = error_accumulator.get(errno).value_or(0);
-                    error_accumulator.set(errno, error_sum + 1);
-                } else {
-                    if (S_ISDIR(st.st_mode)) {
-                        queue.enqueue(QueueEntry(builder.to_string(), &child));
-                    } else {
-                        child.m_area = st.st_size;
-                    }
-                }
-                builder.trim(name_len);
-            }
-        }
-    }
-
-    update_totals(root);
-}
-
-static void analyze(RefPtr<Tree> tree, SpaceAnalyzer::TreeMapWidget& treemapwidget, GUI::StatusBar& statusbar)
-{
-    // Build an in-memory tree mirroring the filesystem and for each node
-    // calculate the sum of the file size for all its descendants.
-    TreeNode* root = &tree->m_root;
-    Vector<MountInfo> mounts;
-    fill_mounts(mounts);
-    HashMap<int, int> error_accumulator;
-    populate_filesize_tree(*root, mounts, error_accumulator);
-
-    // Display an error summary in the statusbar.
-    if (!error_accumulator.is_empty()) {
-        StringBuilder builder;
-        bool first = true;
-        builder.append("Some directories were not analyzed: ");
-        for (auto& key : error_accumulator.keys()) {
-            if (!first) {
-                builder.append(", ");
-            }
-            builder.append(strerror(key));
-            builder.append(" (");
-            int value = error_accumulator.get(key).value();
-            builder.append(String::number(value));
-            if (value == 1) {
-                builder.append(" time");
-            } else {
-                builder.append(" times");
-            }
-            builder.append(")");
-            first = false;
-        }
-        statusbar.set_text(builder.to_string());
-    } else {
-        statusbar.set_text("No errors");
-    }
-    treemapwidget.set_tree(tree);
-}
-
-int main(int argc, char* argv[])
-{
-    auto app = GUI::Application::construct(argc, argv);
-
-    RefPtr<Tree> tree = adopt(*new Tree(""));
-
-    // Configure application window.
-    auto app_icon = GUI::Icon::default_icon("app-space-analyzer");
-    auto window = GUI::Window::construct();
-    window->set_title(APP_NAME);
-    window->resize(640, 480);
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    // Load widgets.
-    auto& mainwidget = window->set_main_widget<GUI::Widget>();
-    mainwidget.load_from_gml(space_analyzer_gml);
-    auto& breadcrumbbar = *mainwidget.find_descendant_of_type_named<GUI::BreadcrumbBar>("breadcrumb_bar");
-    auto& treemapwidget = *mainwidget.find_descendant_of_type_named<SpaceAnalyzer::TreeMapWidget>("tree_map");
-    auto& statusbar = *mainwidget.find_descendant_of_type_named<GUI::StatusBar>("status_bar");
-
-    // Configure the menubar.
-    auto menubar = GUI::MenuBar::construct();
-    auto& app_menu = menubar->add_menu(APP_NAME);
-    app_menu.add_action(GUI::Action::create("Analyze", [&](auto&) {
-        analyze(tree, treemapwidget, statusbar);
-    }));
-    app_menu.add_action(GUI::CommonActions::make_quit_action([&](auto&) {
-        app->quit();
-    }));
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action(APP_NAME, app_icon, window));
-    app->set_menubar(move(menubar));
-
-    // Configure event handlers.
-    breadcrumbbar.on_segment_click = [&](size_t index) {
-        ASSERT(index < treemapwidget.path_size());
-        treemapwidget.set_viewpoint(index);
-    };
-    treemapwidget.on_path_change = [&]() {
-        breadcrumbbar.clear_segments();
-        for (size_t k = 0; k < treemapwidget.path_size(); k++) {
-            if (k == 0) {
-                breadcrumbbar.append_segment("/");
-            } else {
-                const SpaceAnalyzer::TreeMapNode* node = treemapwidget.path_node(k);
-                breadcrumbbar.append_segment(node->name());
-            }
-        }
-        breadcrumbbar.set_selected_segment(treemapwidget.viewpoint());
-    };
-
-    // At startup automatically do an analysis of root.
-    analyze(tree, treemapwidget, statusbar);
-
-    window->show();
-    return app->exec();
-}
diff --git a/Applications/Spreadsheet/CMakeLists.txt b/Applications/Spreadsheet/CMakeLists.txt
deleted file mode 100644
index f41922655a..0000000000
--- a/Applications/Spreadsheet/CMakeLists.txt
+++ /dev/null
@@ -1,28 +0,0 @@
-compile_gml(CondFormatting.gml CondFormattingGML.h cond_fmt_gml)
-compile_gml(CondView.gml CondFormattingViewGML.h cond_fmt_view_gml)
-
-set(SOURCES
-    Cell.cpp
-    CellSyntaxHighlighter.cpp
-    CellType/Date.cpp
-    CellType/Format.cpp
-    CellType/Identity.cpp
-    CellType/Numeric.cpp
-    CellType/String.cpp
-    CellType/Type.cpp
-    CellTypeDialog.cpp
-    CondFormattingGML.h
-    CondFormattingViewGML.h
-    HelpWindow.cpp
-    JSIntegration.cpp
-    Readers/XSV.cpp
-    Spreadsheet.cpp
-    SpreadsheetModel.cpp
-    SpreadsheetView.cpp
-    SpreadsheetWidget.cpp
-    Workbook.cpp
-    main.cpp
-)
-
-serenity_app(Spreadsheet ICON app-spreadsheet)
-target_link_libraries(Spreadsheet LibGUI LibJS LibWeb)
diff --git a/Applications/Spreadsheet/Cell.cpp b/Applications/Spreadsheet/Cell.cpp
deleted file mode 100644
index d2f511753f..0000000000
--- a/Applications/Spreadsheet/Cell.cpp
+++ /dev/null
@@ -1,211 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Cell.h"
-#include "Spreadsheet.h"
-#include <AK/StringBuilder.h>
-#include <AK/TemporaryChange.h>
-
-namespace Spreadsheet {
-
-void Cell::set_data(String new_data)
-{
-    if (m_data == new_data)
-        return;
-
-    if (new_data.starts_with("=")) {
-        new_data = new_data.substring(1, new_data.length() - 1);
-        m_kind = Formula;
-    } else {
-        m_kind = LiteralString;
-    }
-
-    m_data = move(new_data);
-    m_dirty = true;
-    m_evaluated_externally = false;
-}
-
-void Cell::set_data(JS::Value new_data)
-{
-    m_dirty = true;
-    m_evaluated_externally = true;
-
-    StringBuilder builder;
-
-    builder.append(new_data.to_string_without_side_effects());
-    m_data = builder.build();
-
-    m_evaluated_data = move(new_data);
-}
-
-void Cell::set_type(const CellType* type)
-{
-    m_type = type;
-}
-
-void Cell::set_type(const StringView& name)
-{
-    auto* cell_type = CellType::get_by_name(name);
-    if (cell_type) {
-        return set_type(cell_type);
-    }
-
-    ASSERT_NOT_REACHED();
-}
-
-void Cell::set_type_metadata(CellTypeMetadata&& metadata)
-{
-    m_type_metadata = move(metadata);
-}
-
-const CellType& Cell::type() const
-{
-    if (m_type)
-        return *m_type;
-
-    if (m_kind == LiteralString) {
-        if (m_data.to_int().has_value())
-            return *CellType::get_by_name("Numeric");
-    }
-
-    return *CellType::get_by_name("Identity");
-}
-
-String Cell::typed_display() const
-{
-    return type().display(const_cast<Cell&>(*this), m_type_metadata);
-}
-
-JS::Value Cell::typed_js_data() const
-{
-    return type().js_value(const_cast<Cell&>(*this), m_type_metadata);
-}
-
-void Cell::update_data(Badge<Sheet>)
-{
-    TemporaryChange cell_change { m_sheet->current_evaluated_cell(), this };
-    if (!m_dirty)
-        return;
-
-    m_js_exception = {};
-
-    if (m_dirty) {
-        m_dirty = false;
-        if (m_kind == Formula) {
-            if (!m_evaluated_externally) {
-                auto [value, exception] = m_sheet->evaluate(m_data, this);
-                m_evaluated_data = value;
-                m_js_exception = move(exception);
-            }
-        }
-
-        for (auto& ref : m_referencing_cells) {
-            if (ref) {
-                ref->m_dirty = true;
-                ref->update();
-            }
-        }
-    }
-
-    m_evaluated_formats.background_color.clear();
-    m_evaluated_formats.foreground_color.clear();
-    if (!m_js_exception) {
-        StringBuilder builder;
-        for (auto& fmt : m_conditional_formats) {
-            if (!fmt.condition.is_empty()) {
-                builder.clear();
-                builder.append("return (");
-                builder.append(fmt.condition);
-                builder.append(')');
-                auto [value, exception] = m_sheet->evaluate(builder.string_view(), this);
-                if (exception) {
-                    m_js_exception = move(exception);
-                } else {
-                    if (value.to_boolean()) {
-                        if (fmt.background_color.has_value())
-                            m_evaluated_formats.background_color = fmt.background_color;
-                        if (fmt.foreground_color.has_value())
-                            m_evaluated_formats.foreground_color = fmt.foreground_color;
-                    }
-                }
-            }
-        }
-    }
-}
-
-void Cell::update()
-{
-    m_sheet->update(*this);
-}
-
-JS::Value Cell::js_data()
-{
-    if (m_dirty)
-        update();
-
-    if (m_kind == Formula)
-        return m_evaluated_data;
-
-    return JS::js_string(m_sheet->interpreter().heap(), m_data);
-}
-
-String Cell::source() const
-{
-    StringBuilder builder;
-    if (m_kind == Formula)
-        builder.append('=');
-    builder.append(m_data);
-    return builder.to_string();
-}
-
-// FIXME: Find a better way to figure out dependencies
-void Cell::reference_from(Cell* other)
-{
-    if (!other || other == this)
-        return;
-
-    if (!m_referencing_cells.find_if([other](const auto& ptr) { return ptr.ptr() == other; }).is_end())
-        return;
-
-    m_referencing_cells.append(other->make_weak_ptr());
-}
-
-void Cell::copy_from(const Cell& other)
-{
-    m_dirty = true;
-    m_evaluated_externally = other.m_evaluated_externally;
-    m_data = other.m_data;
-    m_evaluated_data = other.m_evaluated_data;
-    m_kind = other.m_kind;
-    m_type = other.m_type;
-    m_type_metadata = other.m_type_metadata;
-    m_conditional_formats = other.m_conditional_formats;
-    m_evaluated_formats = other.m_evaluated_formats;
-    if (!other.m_js_exception)
-        m_js_exception = other.m_js_exception;
-}
-
-}
diff --git a/Applications/Spreadsheet/Cell.h b/Applications/Spreadsheet/Cell.h
deleted file mode 100644
index fef9031d5e..0000000000
--- a/Applications/Spreadsheet/Cell.h
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "CellType/Type.h"
-#include "ConditionalFormatting.h"
-#include "Forward.h"
-#include "JSIntegration.h"
-#include "Position.h"
-#include <AK/String.h>
-#include <AK/Types.h>
-#include <AK/WeakPtr.h>
-
-namespace Spreadsheet {
-
-struct Cell : public Weakable<Cell> {
-    enum Kind {
-        LiteralString,
-        Formula,
-    };
-
-    Cell(String data, Position position, WeakPtr<Sheet> sheet)
-        : m_dirty(false)
-        , m_data(move(data))
-        , m_kind(LiteralString)
-        , m_sheet(sheet)
-        , m_position(move(position))
-    {
-    }
-
-    Cell(String source, JS::Value&& cell_value, Position position, WeakPtr<Sheet> sheet)
-        : m_dirty(false)
-        , m_data(move(source))
-        , m_evaluated_data(move(cell_value))
-        , m_kind(Formula)
-        , m_sheet(sheet)
-        , m_position(move(position))
-    {
-    }
-
-    void reference_from(Cell*);
-
-    void set_data(String new_data);
-    void set_data(JS::Value new_data);
-    bool dirty() const { return m_dirty; }
-    void clear_dirty() { m_dirty = false; }
-
-    void set_exception(JS::Exception* exc) { m_js_exception = exc; }
-    JS::Exception* exception() const { return m_js_exception; }
-
-    const String& data() const { return m_data; }
-    const JS::Value& evaluated_data() const { return m_evaluated_data; }
-    Kind kind() const { return m_kind; }
-    const Vector<WeakPtr<Cell>>& referencing_cells() const { return m_referencing_cells; }
-
-    void set_type(const StringView& name);
-    void set_type(const CellType*);
-    void set_type_metadata(CellTypeMetadata&&);
-
-    const Position& position() const { return m_position; }
-    void set_position(Position position, Badge<Sheet>)
-    {
-        if (position != m_position) {
-            m_dirty = true;
-            m_position = move(position);
-        }
-    }
-
-    const Format& evaluated_formats() const { return m_evaluated_formats; }
-    Format& evaluated_formats() { return m_evaluated_formats; }
-    const Vector<ConditionalFormat>& conditional_formats() const { return m_conditional_formats; }
-    void set_conditional_formats(Vector<ConditionalFormat>&& fmts)
-    {
-        m_dirty = true;
-        m_conditional_formats = move(fmts);
-    }
-
-    String typed_display() const;
-    JS::Value typed_js_data() const;
-
-    const CellType& type() const;
-    const CellTypeMetadata& type_metadata() const { return m_type_metadata; }
-    CellTypeMetadata& type_metadata() { return m_type_metadata; }
-
-    String source() const;
-
-    JS::Value js_data();
-
-    void update();
-    void update_data(Badge<Sheet>);
-
-    const Sheet& sheet() const { return *m_sheet; }
-    Sheet& sheet() { return *m_sheet; }
-
-    void copy_from(const Cell&);
-
-private:
-    bool m_dirty { false };
-    bool m_evaluated_externally { false };
-    String m_data;
-    JS::Value m_evaluated_data;
-    JS::Exception* m_js_exception { nullptr };
-    Kind m_kind { LiteralString };
-    WeakPtr<Sheet> m_sheet;
-    Vector<WeakPtr<Cell>> m_referencing_cells;
-    const CellType* m_type { nullptr };
-    CellTypeMetadata m_type_metadata;
-    Position m_position;
-
-    Vector<ConditionalFormat> m_conditional_formats;
-    Format m_evaluated_formats;
-};
-
-}
diff --git a/Applications/Spreadsheet/CellSyntaxHighlighter.cpp b/Applications/Spreadsheet/CellSyntaxHighlighter.cpp
deleted file mode 100644
index c26d2aa238..0000000000
--- a/Applications/Spreadsheet/CellSyntaxHighlighter.cpp
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "CellSyntaxHighlighter.h"
-#include <LibGUI/JSSyntaxHighlighter.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGfx/Palette.h>
-#include <LibJS/Lexer.h>
-
-namespace Spreadsheet {
-
-void CellSyntaxHighlighter::rehighlight(Gfx::Palette palette)
-{
-    ASSERT(m_editor);
-    auto text = m_editor->text();
-    m_editor->document().spans().clear();
-    if (!text.starts_with('=')) {
-        m_editor->update();
-        return;
-    }
-
-    JSSyntaxHighlighter::rehighlight(palette);
-
-    // Highlight the '='
-    m_editor->document().spans().empend(
-        GUI::TextRange { { 0, 0 }, { 0, 1 } },
-        Gfx::TextAttributes {
-            palette.syntax_keyword(),
-            Optional<Color> {},
-            false,
-            false,
-        },
-        nullptr,
-        false);
-
-    if (m_cell && m_cell->exception()) {
-        auto range = m_cell->exception()->source_ranges().first();
-        GUI::TextRange text_range { { range.start.line - 1, range.start.column }, { range.end.line - 1, range.end.column - 1 } };
-        m_editor->document().spans().prepend(
-            GUI::TextDocumentSpan {
-                text_range,
-                Gfx::TextAttributes {
-                    Color::Black,
-                    Color::Red,
-                    false,
-                    false,
-                },
-                nullptr,
-                false });
-    }
-    m_editor->update();
-}
-
-CellSyntaxHighlighter::~CellSyntaxHighlighter()
-{
-}
-
-}
diff --git a/Applications/Spreadsheet/CellSyntaxHighlighter.h b/Applications/Spreadsheet/CellSyntaxHighlighter.h
deleted file mode 100644
index f02f7e2bbb..0000000000
--- a/Applications/Spreadsheet/CellSyntaxHighlighter.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Cell.h"
-#include <LibGUI/JSSyntaxHighlighter.h>
-#include <LibGUI/SyntaxHighlighter.h>
-
-namespace Spreadsheet {
-
-class CellSyntaxHighlighter final : public GUI::JSSyntaxHighlighter {
-public:
-    CellSyntaxHighlighter() { }
-    virtual ~CellSyntaxHighlighter() override;
-
-    virtual void rehighlight(Gfx::Palette) override;
-    void set_cell(const Cell* cell) { m_cell = cell; }
-
-private:
-    const Cell* m_cell { nullptr };
-};
-
-}
diff --git a/Applications/Spreadsheet/CellType/Date.cpp b/Applications/Spreadsheet/CellType/Date.cpp
deleted file mode 100644
index 005620006f..0000000000
--- a/Applications/Spreadsheet/CellType/Date.cpp
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Date.h"
-#include "../Cell.h"
-#include "../Spreadsheet.h"
-#include <AK/ScopeGuard.h>
-#include <LibCore/DateTime.h>
-
-namespace Spreadsheet {
-
-DateCell::DateCell()
-    : CellType("Date")
-{
-}
-
-DateCell::~DateCell()
-{
-}
-
-String DateCell::display(Cell& cell, const CellTypeMetadata& metadata) const
-{
-    ScopeGuard propagate_exception { [&cell] {
-        if (auto exc = cell.sheet().interpreter().exception()) {
-            cell.sheet().interpreter().vm().clear_exception();
-            cell.set_exception(exc);
-        }
-    } };
-    auto timestamp = js_value(cell, metadata);
-    auto string = Core::DateTime::from_timestamp(timestamp.to_i32(cell.sheet().global_object())).to_string(metadata.format.is_empty() ? "%Y-%m-%d %H:%M:%S" : metadata.format.characters());
-
-    if (metadata.length >= 0)
-        return string.substring(0, metadata.length);
-
-    return string;
-}
-
-JS::Value DateCell::js_value(Cell& cell, const CellTypeMetadata&) const
-{
-    auto js_data = cell.js_data();
-    auto value = js_data.to_double(cell.sheet().global_object());
-    return JS::Value(value / 1000); // Turn it to seconds
-}
-
-}
diff --git a/Applications/Spreadsheet/CellType/Date.h b/Applications/Spreadsheet/CellType/Date.h
deleted file mode 100644
index 3221fad0f1..0000000000
--- a/Applications/Spreadsheet/CellType/Date.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Type.h"
-
-namespace Spreadsheet {
-
-class DateCell : public CellType {
-
-public:
-    DateCell();
-    virtual ~DateCell() override;
-    virtual String display(Cell&, const CellTypeMetadata&) const override;
-    virtual JS::Value js_value(Cell&, const CellTypeMetadata&) const override;
-};
-
-}
diff --git a/Applications/Spreadsheet/CellType/Format.cpp b/Applications/Spreadsheet/CellType/Format.cpp
deleted file mode 100644
index d7c590a550..0000000000
--- a/Applications/Spreadsheet/CellType/Format.cpp
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Format.h"
-#include <AK/PrintfImplementation.h>
-#include <AK/String.h>
-#include <AK/StringBuilder.h>
-
-namespace Spreadsheet {
-
-template<typename T, typename V>
-struct SingleEntryListNext {
-    ALWAYS_INLINE T operator()(V value) const
-    {
-        return (T)value;
-    }
-};
-
-template<typename PutChFunc, typename ArgumentListRefT, template<typename T, typename U = ArgumentListRefT> typename NextArgument>
-struct PrintfImpl : public PrintfImplementation::PrintfImpl<PutChFunc, ArgumentListRefT, NextArgument> {
-    ALWAYS_INLINE PrintfImpl(PutChFunc& putch, char*& bufptr, const int& nwritten)
-        : PrintfImplementation::PrintfImpl<PutChFunc, ArgumentListRefT, NextArgument>(putch, bufptr, nwritten)
-    {
-    }
-
-    // Disallow pointer formats.
-    ALWAYS_INLINE int format_n(const PrintfImplementation::ModifierState&, ArgumentListRefT&) const
-    {
-        return 0;
-    }
-    ALWAYS_INLINE int format_s(const PrintfImplementation::ModifierState&, ArgumentListRefT&) const
-    {
-        return 0;
-    }
-};
-
-String format_double(const char* format, double value)
-{
-    StringBuilder builder;
-    auto putch = [&](auto, auto ch) { builder.append(ch); };
-    printf_internal<decltype(putch), PrintfImpl, double, SingleEntryListNext>(putch, nullptr, format, value);
-
-    return builder.build();
-}
-
-}
diff --git a/Applications/Spreadsheet/CellType/Format.h b/Applications/Spreadsheet/CellType/Format.h
deleted file mode 100644
index 98f3cdc741..0000000000
--- a/Applications/Spreadsheet/CellType/Format.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Forward.h>
-
-namespace Spreadsheet {
-
-String format_double(const char* format, double value);
-
-}
diff --git a/Applications/Spreadsheet/CellType/Identity.cpp b/Applications/Spreadsheet/CellType/Identity.cpp
deleted file mode 100644
index eed7cb190c..0000000000
--- a/Applications/Spreadsheet/CellType/Identity.cpp
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Identity.h"
-#include "../Cell.h"
-#include "../Spreadsheet.h"
-
-namespace Spreadsheet {
-
-IdentityCell::IdentityCell()
-    : CellType("Identity")
-{
-}
-
-IdentityCell::~IdentityCell()
-{
-}
-
-String IdentityCell::display(Cell& cell, const CellTypeMetadata&) const
-{
-    return cell.js_data().to_string_without_side_effects();
-}
-
-JS::Value IdentityCell::js_value(Cell& cell, const CellTypeMetadata&) const
-{
-    return cell.js_data();
-}
-
-}
diff --git a/Applications/Spreadsheet/CellType/Identity.h b/Applications/Spreadsheet/CellType/Identity.h
deleted file mode 100644
index 09089153ec..0000000000
--- a/Applications/Spreadsheet/CellType/Identity.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Type.h"
-
-namespace Spreadsheet {
-
-class IdentityCell : public CellType {
-
-public:
-    IdentityCell();
-    virtual ~IdentityCell() override;
-    virtual String display(Cell&, const CellTypeMetadata&) const override;
-    virtual JS::Value js_value(Cell&, const CellTypeMetadata&) const override;
-};
-
-}
diff --git a/Applications/Spreadsheet/CellType/Numeric.cpp b/Applications/Spreadsheet/CellType/Numeric.cpp
deleted file mode 100644
index d58d48cd85..0000000000
--- a/Applications/Spreadsheet/CellType/Numeric.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Numeric.h"
-#include "../Cell.h"
-#include "../Spreadsheet.h"
-#include "Format.h"
-#include <AK/ScopeGuard.h>
-
-namespace Spreadsheet {
-
-NumericCell::NumericCell()
-    : CellType("Numeric")
-{
-}
-
-NumericCell::~NumericCell()
-{
-}
-
-String NumericCell::display(Cell& cell, const CellTypeMetadata& metadata) const
-{
-    ScopeGuard propagate_exception { [&cell] {
-        if (auto exc = cell.sheet().interpreter().exception()) {
-            cell.sheet().interpreter().vm().clear_exception();
-            cell.set_exception(exc);
-        }
-    } };
-    auto value = js_value(cell, metadata);
-    String string;
-    if (metadata.format.is_empty())
-        string = value.to_string_without_side_effects();
-    else
-        string = format_double(metadata.format.characters(), value.to_double(cell.sheet().global_object()));
-
-    if (metadata.length >= 0)
-        return string.substring(0, metadata.length);
-
-    return string;
-}
-
-JS::Value NumericCell::js_value(Cell& cell, const CellTypeMetadata&) const
-{
-    ScopeGuard propagate_exception { [&cell] {
-        if (auto exc = cell.sheet().interpreter().exception()) {
-            cell.sheet().interpreter().vm().clear_exception();
-            cell.set_exception(exc);
-        }
-    } };
-    return cell.js_data().to_number(cell.sheet().global_object());
-}
-
-}
diff --git a/Applications/Spreadsheet/CellType/Numeric.h b/Applications/Spreadsheet/CellType/Numeric.h
deleted file mode 100644
index e0cd4a295a..0000000000
--- a/Applications/Spreadsheet/CellType/Numeric.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Type.h"
-
-namespace Spreadsheet {
-
-class NumericCell : public CellType {
-
-public:
-    NumericCell();
-    virtual ~NumericCell() override;
-    virtual String display(Cell&, const CellTypeMetadata&) const override;
-    virtual JS::Value js_value(Cell&, const CellTypeMetadata&) const override;
-};
-
-}
diff --git a/Applications/Spreadsheet/CellType/String.cpp b/Applications/Spreadsheet/CellType/String.cpp
deleted file mode 100644
index ccda9947fe..0000000000
--- a/Applications/Spreadsheet/CellType/String.cpp
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "String.h"
-#include "../Cell.h"
-#include "../Spreadsheet.h"
-
-namespace Spreadsheet {
-
-StringCell::StringCell()
-    : CellType("String")
-{
-}
-
-StringCell::~StringCell()
-{
-}
-
-String StringCell::display(Cell& cell, const CellTypeMetadata& metadata) const
-{
-    auto string = cell.js_data().to_string_without_side_effects();
-    if (metadata.length >= 0)
-        return string.substring(0, metadata.length);
-
-    return string;
-}
-
-JS::Value StringCell::js_value(Cell& cell, const CellTypeMetadata& metadata) const
-{
-    auto string = display(cell, metadata);
-    return JS::js_string(cell.sheet().interpreter().heap(), string);
-}
-
-}
diff --git a/Applications/Spreadsheet/CellType/String.h b/Applications/Spreadsheet/CellType/String.h
deleted file mode 100644
index e4ba28eb24..0000000000
--- a/Applications/Spreadsheet/CellType/String.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Type.h"
-
-namespace Spreadsheet {
-
-class StringCell : public CellType {
-
-public:
-    StringCell();
-    virtual ~StringCell() override;
-    virtual String display(Cell&, const CellTypeMetadata&) const override;
-    virtual JS::Value js_value(Cell&, const CellTypeMetadata&) const override;
-};
-
-}
diff --git a/Applications/Spreadsheet/CellType/Type.cpp b/Applications/Spreadsheet/CellType/Type.cpp
deleted file mode 100644
index cd64e8f239..0000000000
--- a/Applications/Spreadsheet/CellType/Type.cpp
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Type.h"
-#include "Date.h"
-#include "Identity.h"
-#include "Numeric.h"
-#include "String.h"
-#include <AK/HashMap.h>
-#include <AK/OwnPtr.h>
-
-static HashMap<String, Spreadsheet::CellType*> s_cell_types;
-static Spreadsheet::StringCell s_string_cell;
-static Spreadsheet::NumericCell s_numeric_cell;
-static Spreadsheet::IdentityCell s_identity_cell;
-static Spreadsheet::DateCell s_date_cell;
-
-namespace Spreadsheet {
-
-const CellType* CellType::get_by_name(const StringView& name)
-{
-    return s_cell_types.get(name).value_or(nullptr);
-}
-
-Vector<StringView> CellType::names()
-{
-    Vector<StringView> names;
-    for (auto& it : s_cell_types)
-        names.append(it.key);
-    return names;
-}
-
-CellType::CellType(const StringView& name)
-    : m_name(name)
-{
-    ASSERT(!s_cell_types.contains(name));
-    s_cell_types.set(name, this);
-}
-
-}
diff --git a/Applications/Spreadsheet/CellType/Type.h b/Applications/Spreadsheet/CellType/Type.h
deleted file mode 100644
index 0145a8fa8d..0000000000
--- a/Applications/Spreadsheet/CellType/Type.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "../ConditionalFormatting.h"
-#include "../Forward.h"
-#include <AK/Forward.h>
-#include <AK/String.h>
-#include <LibGfx/Color.h>
-#include <LibGfx/TextAlignment.h>
-#include <LibJS/Forward.h>
-
-namespace Spreadsheet {
-
-struct CellTypeMetadata {
-    int length { -1 };
-    String format;
-    Gfx::TextAlignment alignment { Gfx::TextAlignment::CenterRight };
-    Format static_format;
-};
-
-class CellType {
-public:
-    static const CellType* get_by_name(const StringView&);
-    static Vector<StringView> names();
-
-    virtual String display(Cell&, const CellTypeMetadata&) const = 0;
-    virtual JS::Value js_value(Cell&, const CellTypeMetadata&) const = 0;
-    virtual ~CellType() { }
-
-    const String& name() const { return m_name; }
-
-protected:
-    CellType(const StringView& name);
-
-private:
-    String m_name;
-};
-
-}
diff --git a/Applications/Spreadsheet/CellTypeDialog.cpp b/Applications/Spreadsheet/CellTypeDialog.cpp
deleted file mode 100644
index b94feab5e5..0000000000
--- a/Applications/Spreadsheet/CellTypeDialog.cpp
+++ /dev/null
@@ -1,483 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "CellTypeDialog.h"
-#include "Cell.h"
-#include "Spreadsheet.h"
-#include <AK/StringBuilder.h>
-#include <Applications/Spreadsheet/CondFormattingGML.h>
-#include <Applications/Spreadsheet/CondFormattingViewGML.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/CheckBox.h>
-#include <LibGUI/ColorInput.h>
-#include <LibGUI/ComboBox.h>
-#include <LibGUI/ItemListModel.h>
-#include <LibGUI/JSSyntaxHighlighter.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/ListView.h>
-#include <LibGUI/SpinBox.h>
-#include <LibGUI/TabWidget.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGUI/Widget.h>
-#include <LibGfx/FontDatabase.h>
-
-REGISTER_WIDGET(Spreadsheet, ConditionsView);
-
-namespace Spreadsheet {
-
-CellTypeDialog::CellTypeDialog(const Vector<Position>& positions, Sheet& sheet, GUI::Window* parent)
-    : GUI::Dialog(parent)
-{
-    ASSERT(!positions.is_empty());
-
-    StringBuilder builder;
-
-    if (positions.size() == 1)
-        builder.appendff("Format cell {}{}", positions.first().column, positions.first().row);
-    else
-        builder.appendff("Format {} cells", positions.size());
-
-    set_title(builder.string_view());
-    set_icon(parent->icon());
-    resize(285, 360);
-
-    auto& main_widget = set_main_widget<GUI::Widget>();
-    main_widget.set_layout<GUI::VerticalBoxLayout>().set_margins({ 4, 4, 4, 4 });
-    main_widget.set_fill_with_background_color(true);
-
-    auto& tab_widget = main_widget.add<GUI::TabWidget>();
-    setup_tabs(tab_widget, positions, sheet);
-
-    auto& buttonbox = main_widget.add<GUI::Widget>();
-    buttonbox.set_shrink_to_fit(true);
-    auto& button_layout = buttonbox.set_layout<GUI::HorizontalBoxLayout>();
-    button_layout.set_spacing(10);
-    button_layout.add_spacer();
-    auto& ok_button = buttonbox.add<GUI::Button>("OK");
-    ok_button.set_fixed_width(80);
-    ok_button.on_click = [&](auto) { done(ExecOK); };
-}
-
-const Vector<String> g_horizontal_alignments { "Left", "Center", "Right" };
-const Vector<String> g_vertical_alignments { "Top", "Center", "Bottom" };
-Vector<String> g_types;
-
-constexpr static CellTypeDialog::VerticalAlignment vertical_alignment_from(Gfx::TextAlignment alignment)
-{
-    switch (alignment) {
-    case Gfx::TextAlignment::CenterRight:
-    case Gfx::TextAlignment::CenterLeft:
-    case Gfx::TextAlignment::Center:
-        return CellTypeDialog::VerticalAlignment::Center;
-
-    case Gfx::TextAlignment::TopRight:
-    case Gfx::TextAlignment::TopLeft:
-        return CellTypeDialog::VerticalAlignment::Top;
-
-    case Gfx::TextAlignment::BottomRight:
-        return CellTypeDialog::VerticalAlignment::Bottom;
-    }
-
-    return CellTypeDialog::VerticalAlignment::Center;
-}
-
-constexpr static CellTypeDialog::HorizontalAlignment horizontal_alignment_from(Gfx::TextAlignment alignment)
-{
-    switch (alignment) {
-    case Gfx::TextAlignment::Center:
-        return CellTypeDialog::HorizontalAlignment::Center;
-
-    case Gfx::TextAlignment::CenterRight:
-    case Gfx::TextAlignment::TopRight:
-    case Gfx::TextAlignment::BottomRight:
-        return CellTypeDialog::HorizontalAlignment::Right;
-
-    case Gfx::TextAlignment::TopLeft:
-    case Gfx::TextAlignment::CenterLeft:
-        return CellTypeDialog::HorizontalAlignment::Left;
-    }
-
-    return CellTypeDialog::HorizontalAlignment::Right;
-}
-
-void CellTypeDialog::setup_tabs(GUI::TabWidget& tabs, const Vector<Position>& positions, Sheet& sheet)
-{
-    g_types.clear();
-    for (auto& type_name : CellType::names())
-        g_types.append(type_name);
-
-    Vector<Cell*> cells;
-    for (auto& position : positions) {
-        if (auto cell = sheet.at(position))
-            cells.append(cell);
-    }
-
-    if (cells.size() == 1) {
-        auto& cell = *cells.first();
-        m_format = cell.type_metadata().format;
-        m_length = cell.type_metadata().length;
-        m_type = &cell.type();
-        m_vertical_alignment = vertical_alignment_from(cell.type_metadata().alignment);
-        m_horizontal_alignment = horizontal_alignment_from(cell.type_metadata().alignment);
-        m_static_format = cell.type_metadata().static_format;
-        m_conditional_formats = cell.conditional_formats();
-    }
-
-    auto& type_tab = tabs.add_tab<GUI::Widget>("Type");
-    type_tab.set_layout<GUI::HorizontalBoxLayout>().set_margins({ 4, 4, 4, 4 });
-    {
-        auto& left_side = type_tab.add<GUI::Widget>();
-        left_side.set_layout<GUI::VerticalBoxLayout>();
-        auto& right_side = type_tab.add<GUI::Widget>();
-        right_side.set_layout<GUI::VerticalBoxLayout>();
-        right_side.set_fixed_width(170);
-
-        auto& type_list = left_side.add<GUI::ListView>();
-        type_list.set_model(*GUI::ItemListModel<String>::create(g_types));
-        type_list.set_should_hide_unnecessary_scrollbars(true);
-        type_list.on_selection = [&](auto& index) {
-            if (!index.is_valid()) {
-                m_type = nullptr;
-                return;
-            }
-
-            m_type = CellType::get_by_name(g_types.at(index.row()));
-        };
-
-        {
-            auto& checkbox = right_side.add<GUI::CheckBox>("Override max length");
-            auto& spinbox = right_side.add<GUI::SpinBox>();
-            checkbox.set_checked(m_length != -1);
-            spinbox.set_min(0);
-            spinbox.set_enabled(m_length != -1);
-            if (m_length > -1)
-                spinbox.set_value(m_length);
-
-            checkbox.on_checked = [&](auto checked) {
-                spinbox.set_enabled(checked);
-                if (!checked) {
-                    m_length = -1;
-                    spinbox.set_value(0);
-                }
-            };
-            spinbox.on_change = [&](auto value) {
-                m_length = value;
-            };
-        }
-        {
-            auto& checkbox = right_side.add<GUI::CheckBox>("Override display format");
-            auto& editor = right_side.add<GUI::TextEditor>();
-            checkbox.set_checked(!m_format.is_empty());
-            editor.set_should_hide_unnecessary_scrollbars(true);
-            editor.set_enabled(!m_format.is_empty());
-            editor.set_text(m_format);
-
-            checkbox.on_checked = [&](auto checked) {
-                editor.set_enabled(checked);
-                if (!checked)
-                    m_format = String::empty();
-                editor.set_text(m_format);
-            };
-            editor.on_change = [&] {
-                m_format = editor.text();
-            };
-        }
-    }
-
-    auto& alignment_tab = tabs.add_tab<GUI::Widget>("Alignment");
-    alignment_tab.set_layout<GUI::VerticalBoxLayout>().set_margins({ 4, 4, 4, 4 });
-    {
-        // FIXME: Frame?
-        // Horizontal alignment
-        {
-            auto& horizontal_alignment_selection_container = alignment_tab.add<GUI::Widget>();
-            horizontal_alignment_selection_container.set_layout<GUI::HorizontalBoxLayout>();
-            horizontal_alignment_selection_container.layout()->set_margins({ 0, 4, 0, 0 });
-            horizontal_alignment_selection_container.set_fixed_height(22);
-
-            auto& horizontal_alignment_label = horizontal_alignment_selection_container.add<GUI::Label>();
-            horizontal_alignment_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-            horizontal_alignment_label.set_text("Horizontal text alignment");
-
-            auto& horizontal_combobox = alignment_tab.add<GUI::ComboBox>();
-            horizontal_combobox.set_only_allow_values_from_model(true);
-            horizontal_combobox.set_model(*GUI::ItemListModel<String>::create(g_horizontal_alignments));
-            horizontal_combobox.set_selected_index((int)m_horizontal_alignment);
-            horizontal_combobox.on_change = [&](auto&, const GUI::ModelIndex& index) {
-                switch (index.row()) {
-                case 0:
-                    m_horizontal_alignment = HorizontalAlignment::Left;
-                    break;
-                case 1:
-                    m_horizontal_alignment = HorizontalAlignment::Center;
-                    break;
-                case 2:
-                    m_horizontal_alignment = HorizontalAlignment::Right;
-                    break;
-                default:
-                    ASSERT_NOT_REACHED();
-                }
-            };
-        }
-
-        // Vertical alignment
-        {
-            auto& vertical_alignment_container = alignment_tab.add<GUI::Widget>();
-            vertical_alignment_container.set_layout<GUI::HorizontalBoxLayout>();
-            vertical_alignment_container.layout()->set_margins({ 0, 4, 0, 0 });
-            vertical_alignment_container.set_fixed_height(22);
-
-            auto& vertical_alignment_label = vertical_alignment_container.add<GUI::Label>();
-            vertical_alignment_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-            vertical_alignment_label.set_text("Vertical text alignment");
-
-            auto& vertical_combobox = alignment_tab.add<GUI::ComboBox>();
-            vertical_combobox.set_only_allow_values_from_model(true);
-            vertical_combobox.set_model(*GUI::ItemListModel<String>::create(g_vertical_alignments));
-            vertical_combobox.set_selected_index((int)m_vertical_alignment);
-            vertical_combobox.on_change = [&](auto&, const GUI::ModelIndex& index) {
-                switch (index.row()) {
-                case 0:
-                    m_vertical_alignment = VerticalAlignment::Top;
-                    break;
-                case 1:
-                    m_vertical_alignment = VerticalAlignment::Center;
-                    break;
-                case 2:
-                    m_vertical_alignment = VerticalAlignment::Bottom;
-                    break;
-                default:
-                    ASSERT_NOT_REACHED();
-                }
-            };
-        }
-    }
-
-    auto& colors_tab = tabs.add_tab<GUI::Widget>("Color");
-    colors_tab.set_layout<GUI::VerticalBoxLayout>().set_margins({ 4, 4, 4, 4 });
-    {
-        // Static formatting
-        {
-            auto& static_formatting_container = colors_tab.add<GUI::Widget>();
-            static_formatting_container.set_layout<GUI::VerticalBoxLayout>();
-            static_formatting_container.set_shrink_to_fit(true);
-
-            // Foreground
-            {
-                // FIXME: Somehow allow unsetting these.
-                auto& foreground_container = static_formatting_container.add<GUI::Widget>();
-                foreground_container.set_layout<GUI::HorizontalBoxLayout>();
-                foreground_container.layout()->set_margins({ 0, 4, 0, 0 });
-                foreground_container.set_fixed_height(22);
-
-                auto& foreground_label = foreground_container.add<GUI::Label>();
-                foreground_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-                foreground_label.set_text("Static foreground color");
-
-                auto& foreground_selector = foreground_container.add<GUI::ColorInput>();
-                if (m_static_format.foreground_color.has_value())
-                    foreground_selector.set_color(m_static_format.foreground_color.value());
-                foreground_selector.on_change = [&]() {
-                    m_static_format.foreground_color = foreground_selector.color();
-                };
-            }
-
-            // Background
-            {
-                // FIXME: Somehow allow unsetting these.
-                auto& background_container = static_formatting_container.add<GUI::Widget>();
-                background_container.set_layout<GUI::HorizontalBoxLayout>();
-                background_container.layout()->set_margins({ 0, 4, 0, 0 });
-                background_container.set_fixed_height(22);
-
-                auto& background_label = background_container.add<GUI::Label>();
-                background_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-                background_label.set_text("Static background color");
-
-                auto& background_selector = background_container.add<GUI::ColorInput>();
-                if (m_static_format.background_color.has_value())
-                    background_selector.set_color(m_static_format.background_color.value());
-                background_selector.on_change = [&]() {
-                    m_static_format.background_color = background_selector.color();
-                };
-            }
-        }
-    }
-
-    auto& conditional_fmt_tab = tabs.add_tab<GUI::Widget>("Conditional format");
-    conditional_fmt_tab.load_from_gml(cond_fmt_gml);
-    {
-        auto& view = *conditional_fmt_tab.find_descendant_of_type_named<Spreadsheet::ConditionsView>("conditions_view");
-        view.set_formats(&m_conditional_formats);
-
-        auto& add_button = *conditional_fmt_tab.find_descendant_of_type_named<GUI::Button>("add_button");
-        add_button.on_click = [&](auto) {
-            view.add_format();
-        };
-
-        // FIXME: Disable this when empty.
-        auto& remove_button = *conditional_fmt_tab.find_descendant_of_type_named<GUI::Button>("remove_button");
-        remove_button.on_click = [&](auto) {
-            view.remove_top();
-        };
-    }
-}
-
-CellTypeMetadata CellTypeDialog::metadata() const
-{
-    CellTypeMetadata metadata;
-    metadata.format = m_format;
-    metadata.length = m_length;
-    metadata.static_format = m_static_format;
-
-    switch (m_vertical_alignment) {
-    case VerticalAlignment::Top:
-        switch (m_horizontal_alignment) {
-        case HorizontalAlignment::Left:
-            metadata.alignment = Gfx::TextAlignment::TopLeft;
-            break;
-        case HorizontalAlignment::Center:
-            metadata.alignment = Gfx::TextAlignment::Center; // TopCenter?
-            break;
-        case HorizontalAlignment::Right:
-            metadata.alignment = Gfx::TextAlignment::TopRight;
-            break;
-        }
-        break;
-    case VerticalAlignment::Center:
-        switch (m_horizontal_alignment) {
-        case HorizontalAlignment::Left:
-            metadata.alignment = Gfx::TextAlignment::CenterLeft;
-            break;
-        case HorizontalAlignment::Center:
-            metadata.alignment = Gfx::TextAlignment::Center;
-            break;
-        case HorizontalAlignment::Right:
-            metadata.alignment = Gfx::TextAlignment::CenterRight;
-            break;
-        }
-        break;
-    case VerticalAlignment::Bottom:
-        switch (m_horizontal_alignment) {
-        case HorizontalAlignment::Left:
-            metadata.alignment = Gfx::TextAlignment::CenterLeft; // BottomLeft?
-            break;
-        case HorizontalAlignment::Center:
-            metadata.alignment = Gfx::TextAlignment::Center;
-            break;
-        case HorizontalAlignment::Right:
-            metadata.alignment = Gfx::TextAlignment::BottomRight;
-            break;
-        }
-        break;
-    }
-
-    return metadata;
-}
-
-ConditionView::ConditionView(ConditionalFormat& fmt)
-    : m_format(fmt)
-{
-    load_from_gml(cond_fmt_view_gml);
-
-    auto& fg_input = *find_descendant_of_type_named<GUI::ColorInput>("foreground_input");
-    auto& bg_input = *find_descendant_of_type_named<GUI::ColorInput>("background_input");
-    auto& formula_editor = *find_descendant_of_type_named<GUI::TextEditor>("formula_editor");
-
-    if (m_format.foreground_color.has_value())
-        fg_input.set_color(m_format.foreground_color.value());
-
-    if (m_format.background_color.has_value())
-        bg_input.set_color(m_format.background_color.value());
-
-    formula_editor.set_text(m_format.condition);
-
-    // FIXME: Allow unsetting these.
-    fg_input.on_change = [&] {
-        m_format.foreground_color = fg_input.color();
-    };
-
-    bg_input.on_change = [&] {
-        m_format.background_color = bg_input.color();
-    };
-
-    formula_editor.set_syntax_highlighter(make<GUI::JSSyntaxHighlighter>());
-    formula_editor.set_should_hide_unnecessary_scrollbars(true);
-    formula_editor.set_font(&Gfx::FontDatabase::default_fixed_width_font());
-    formula_editor.on_change = [&] {
-        m_format.condition = formula_editor.text();
-    };
-}
-
-ConditionView::~ConditionView()
-{
-}
-
-ConditionsView::ConditionsView()
-{
-    set_layout<GUI::VerticalBoxLayout>().set_spacing(2);
-}
-
-void ConditionsView::set_formats(Vector<ConditionalFormat>* formats)
-{
-    ASSERT(!m_formats);
-
-    m_formats = formats;
-
-    for (auto& entry : *m_formats)
-        m_widgets.append(add<ConditionView>(entry));
-}
-
-void ConditionsView::add_format()
-{
-    ASSERT(m_formats);
-
-    m_formats->empend();
-    auto& last = m_formats->last();
-
-    m_widgets.append(add<ConditionView>(last));
-
-    update();
-}
-
-void ConditionsView::remove_top()
-{
-    ASSERT(m_formats);
-
-    if (m_formats->is_empty())
-        return;
-
-    m_formats->take_last();
-    m_widgets.take_last()->remove_from_parent();
-    update();
-}
-
-ConditionsView::~ConditionsView()
-{
-}
-
-}
diff --git a/Applications/Spreadsheet/CellTypeDialog.h b/Applications/Spreadsheet/CellTypeDialog.h
deleted file mode 100644
index ede19ebd51..0000000000
--- a/Applications/Spreadsheet/CellTypeDialog.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "CellType/Type.h"
-#include "ConditionalFormatting.h"
-#include "Forward.h"
-#include <LibGUI/Dialog.h>
-
-namespace Spreadsheet {
-
-class CellTypeDialog : public GUI::Dialog {
-    C_OBJECT(CellTypeDialog);
-
-public:
-    CellTypeMetadata metadata() const;
-    const CellType* type() const { return m_type; }
-    Vector<ConditionalFormat> conditional_formats() { return m_conditional_formats; }
-
-    enum class HorizontalAlignment : int {
-        Left = 0,
-        Center,
-        Right,
-    };
-    enum class VerticalAlignment : int {
-        Top = 0,
-        Center,
-        Bottom,
-    };
-
-private:
-    CellTypeDialog(const Vector<Position>&, Sheet&, GUI::Window* parent = nullptr);
-    void setup_tabs(GUI::TabWidget&, const Vector<Position>&, Sheet&);
-
-    const CellType* m_type { nullptr };
-
-    int m_length { -1 };
-    String m_format;
-    HorizontalAlignment m_horizontal_alignment { HorizontalAlignment::Right };
-    VerticalAlignment m_vertical_alignment { VerticalAlignment::Center };
-    Format m_static_format;
-    Vector<ConditionalFormat> m_conditional_formats;
-};
-
-}
diff --git a/Applications/Spreadsheet/CondFormatting.gml b/Applications/Spreadsheet/CondFormatting.gml
deleted file mode 100644
index 437b5a1c3d..0000000000
--- a/Applications/Spreadsheet/CondFormatting.gml
+++ /dev/null
@@ -1,40 +0,0 @@
-@GUI::Widget {
-    name: "main"
-    fill_with_background_color: true
-
-    layout: @GUI::VerticalBoxLayout {
-        margins: [4, 4, 4, 4]
-        spacing: 4
-    }
-
-    @Spreadsheet::ConditionsView {
-        name: "conditions_view"
-    }
-
-    @GUI::Widget {
-        shrink_to_fit: true
-
-        layout: @GUI::HorizontalBoxLayout {
-            spacing: 10
-        }
-
-        @GUI::Widget {
-        }
-
-        @GUI::Button {
-            name: "add_button"
-            text: "Add"
-            fixed_width: 70
-        }
-
-        @GUI::Button {
-            name: "remove_button"
-            text: "Remove"
-            fixed_width: 70
-        }
-
-        @GUI::Widget {
-        }
-
-    }
-}
diff --git a/Applications/Spreadsheet/CondView.gml b/Applications/Spreadsheet/CondView.gml
deleted file mode 100644
index d2161da89f..0000000000
--- a/Applications/Spreadsheet/CondView.gml
+++ /dev/null
@@ -1,54 +0,0 @@
-@GUI::Widget {
-    layout: @GUI::VerticalBoxLayout {
-    }
-
-    @GUI::Widget {
-        shrink_to_fit: true
-
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            text: "if..."
-            fixed_width: 40
-        }
-
-        @GUI::TextEditor {
-            name: "formula_editor"
-            fixed_height: 25
-            tooltip: "Use 'value' to refer to the current cell's value"
-        }
-    }
-
-    @GUI::Widget {
-        shrink_to_fit: true
-
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            text: "Foreground..."
-            fixed_width: 150
-        }
-
-        @GUI::ColorInput {
-            name: "foreground_input"
-        }
-    }
-
-    @GUI::Widget {
-        shrink_to_fit: true
-
-        layout: @GUI::HorizontalBoxLayout {
-        }
-
-        @GUI::Label {
-            text: "Background..."
-            fixed_width: 150
-        }
-
-        @GUI::ColorInput {
-            name: "background_input"
-        }
-    }
-}
diff --git a/Applications/Spreadsheet/ConditionalFormatting.h b/Applications/Spreadsheet/ConditionalFormatting.h
deleted file mode 100644
index 8e32bc8046..0000000000
--- a/Applications/Spreadsheet/ConditionalFormatting.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Forward.h"
-#include <AK/String.h>
-#include <LibGUI/ScrollableWidget.h>
-#include <LibGfx/Color.h>
-
-namespace Spreadsheet {
-
-struct Format {
-    Optional<Color> foreground_color;
-    Optional<Color> background_color;
-};
-
-struct ConditionalFormat : public Format {
-    String condition;
-};
-
-class ConditionView : public GUI::Widget {
-    C_OBJECT(ConditionView)
-public:
-    virtual ~ConditionView() override;
-
-private:
-    ConditionView(ConditionalFormat&);
-
-    ConditionalFormat& m_format;
-};
-
-class ConditionsView : public GUI::Widget {
-    C_OBJECT(ConditionsView)
-public:
-    virtual ~ConditionsView() override;
-
-    void set_formats(Vector<ConditionalFormat>*);
-
-    void add_format();
-    void remove_top();
-
-private:
-    ConditionsView();
-
-    Vector<ConditionalFormat>* m_formats { nullptr };
-    NonnullRefPtrVector<GUI::Widget> m_widgets;
-};
-
-}
diff --git a/Applications/Spreadsheet/Forward.h b/Applications/Spreadsheet/Forward.h
deleted file mode 100644
index 183c684972..0000000000
--- a/Applications/Spreadsheet/Forward.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-namespace Spreadsheet {
-
-class ConditionView;
-class Sheet;
-class SheetGlobalObject;
-class Workbook;
-class WorkbookObject;
-struct Cell;
-struct ConditionalFormat;
-struct Format;
-struct Position;
-
-}
diff --git a/Applications/Spreadsheet/HelpWindow.cpp b/Applications/Spreadsheet/HelpWindow.cpp
deleted file mode 100644
index eecd0bbb45..0000000000
--- a/Applications/Spreadsheet/HelpWindow.cpp
+++ /dev/null
@@ -1,229 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "HelpWindow.h"
-#include "SpreadsheetWidget.h"
-#include <AK/LexicalPath.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Frame.h>
-#include <LibGUI/ListView.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/Model.h>
-#include <LibGUI/Splitter.h>
-#include <LibMarkdown/Document.h>
-#include <LibWeb/Layout/Node.h>
-#include <LibWeb/OutOfProcessWebView.h>
-
-namespace Spreadsheet {
-
-class HelpListModel final : public GUI::Model {
-public:
-    static NonnullRefPtr<HelpListModel> create() { return adopt(*new HelpListModel); }
-
-    virtual ~HelpListModel() override { }
-
-    virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return m_keys.size(); }
-    virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return 1; }
-    virtual void update() override { }
-
-    virtual GUI::Variant data(const GUI::ModelIndex& index, GUI::ModelRole role = GUI::ModelRole::Display) const override
-    {
-        if (role == GUI::ModelRole::Display) {
-            return key(index);
-        }
-
-        return {};
-    }
-
-    String key(const GUI::ModelIndex& index) const { return m_keys[index.row()]; }
-
-    void set_from(const JsonObject& object)
-    {
-        m_keys.clear();
-        object.for_each_member([this](auto& name, auto&) {
-            m_keys.append(name);
-        });
-        did_update();
-    }
-
-private:
-    HelpListModel()
-    {
-    }
-
-    Vector<String> m_keys;
-};
-
-RefPtr<HelpWindow> HelpWindow::s_the { nullptr };
-
-HelpWindow::HelpWindow(GUI::Window* parent)
-    : GUI::Window(parent)
-{
-    resize(530, 365);
-    set_title("Spreadsheet Functions Help");
-    set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-help.png"));
-
-    auto& widget = set_main_widget<GUI::Widget>();
-    widget.set_layout<GUI::VerticalBoxLayout>();
-    widget.set_fill_with_background_color(true);
-
-    auto& splitter = widget.add<GUI::HorizontalSplitter>();
-    auto& left_frame = splitter.add<GUI::Frame>();
-    left_frame.set_layout<GUI::VerticalBoxLayout>();
-    left_frame.set_fixed_width(100);
-    m_listview = left_frame.add<GUI::ListView>();
-    m_listview->set_activates_on_selection(true);
-    m_listview->set_model(HelpListModel::create());
-
-    m_webview = splitter.add<Web::OutOfProcessWebView>();
-    m_webview->on_link_click = [this](auto& url, auto&, auto&&) {
-        ASSERT(url.protocol() == "spreadsheet");
-        if (url.host() == "example") {
-            auto entry = LexicalPath(url.path()).basename();
-            auto doc_option = m_docs.get(entry);
-            if (!doc_option.is_object()) {
-                GUI::MessageBox::show_error(this, String::formatted("No documentation entry found for '{}'", url.path()));
-                return;
-            }
-            auto& doc = doc_option.as_object();
-            const auto& name = url.fragment();
-
-            auto example_data_value = doc.get_or("example_data", JsonObject {});
-            if (!example_data_value.is_object()) {
-                GUI::MessageBox::show_error(this, String::formatted("No example data found for '{}'", url.path()));
-                return;
-            }
-
-            auto& example_data = example_data_value.as_object();
-            auto value = example_data.get(name);
-            if (!value.is_object()) {
-                GUI::MessageBox::show_error(this, String::formatted("Example '{}' not found for '{}'", name, url.path()));
-                return;
-            }
-
-            auto window = GUI::Window::construct(this);
-            window->resize(size());
-            window->set_icon(icon());
-            window->set_title(String::formatted("Spreadsheet Help - Example {} for {}", name, entry));
-            window->on_close = [window = window.ptr()] { window->remove_from_parent(); };
-
-            auto& widget = window->set_main_widget<SpreadsheetWidget>(NonnullRefPtrVector<Sheet> {}, false);
-            auto sheet = Sheet::from_json(value.as_object(), widget.workbook());
-            if (!sheet) {
-                GUI::MessageBox::show_error(this, String::formatted("Corrupted example '{}' in '{}'", name, url.path()));
-                return;
-            }
-
-            widget.add_sheet(sheet.release_nonnull());
-            window->show();
-        } else if (url.host() == "doc") {
-            auto entry = LexicalPath(url.path()).basename();
-            m_webview->load(URL::create_with_data("text/html", render(entry)));
-        } else {
-            dbgln("Invalid spreadsheet action domain '{}'", url.host());
-        }
-    };
-
-    m_listview->on_activation = [this](auto& index) {
-        if (!m_webview)
-            return;
-
-        auto key = static_cast<HelpListModel*>(m_listview->model())->key(index);
-        m_webview->load(URL::create_with_data("text/html", render(key)));
-    };
-}
-
-String HelpWindow::render(const StringView& key)
-{
-    auto doc_option = m_docs.get(key);
-    ASSERT(doc_option.is_object());
-
-    auto& doc = doc_option.as_object();
-
-    auto name = doc.get("name").to_string();
-    auto argc = doc.get("argc").to_u32(0);
-    auto argnames_value = doc.get("argnames");
-    ASSERT(argnames_value.is_array());
-    auto& argnames = argnames_value.as_array();
-
-    auto docstring = doc.get("doc").to_string();
-    auto examples_value = doc.get_or("examples", JsonObject {});
-    ASSERT(examples_value.is_object());
-    auto& examples = examples_value.as_object();
-
-    StringBuilder markdown_builder;
-
-    markdown_builder.append("# NAME\n`");
-    markdown_builder.append(name);
-    markdown_builder.append("`\n\n");
-
-    markdown_builder.append("# ARGUMENTS\n");
-    if (argc > 0)
-        markdown_builder.appendff("{} required argument(s):\n", argc);
-    else
-        markdown_builder.appendf("No required arguments.\n");
-
-    for (size_t i = 0; i < argc; ++i)
-        markdown_builder.appendff("- `{}`\n", argnames.at(i).to_string());
-
-    if (argc > 0)
-        markdown_builder.append("\n");
-
-    if ((size_t)argnames.size() > argc) {
-        auto opt_count = argnames.size() - argc;
-        markdown_builder.appendff("{} optional argument(s):\n", opt_count);
-        for (size_t i = argc; i < (size_t)argnames.size(); ++i)
-            markdown_builder.appendff("- `{}`\n", argnames.at(i).to_string());
-        markdown_builder.append("\n");
-    }
-
-    markdown_builder.append("# DESCRIPTION\n");
-    markdown_builder.append(docstring);
-    markdown_builder.append("\n\n");
-
-    if (!examples.is_empty()) {
-        markdown_builder.append("# EXAMPLES\n");
-        examples.for_each_member([&](auto& text, auto& description_value) {
-            dbgln("- {}\n\n```js\n{}\n```\n", description_value.to_string(), text);
-            markdown_builder.appendff("- {}\n\n```js\n{}\n```\n", description_value.to_string(), text);
-        });
-    }
-
-    auto document = Markdown::Document::parse(markdown_builder.string_view());
-    return document->render_to_html();
-}
-
-void HelpWindow::set_docs(JsonObject&& docs)
-{
-    m_docs = move(docs);
-    static_cast<HelpListModel*>(m_listview->model())->set_from(m_docs);
-    m_listview->update();
-}
-
-HelpWindow::~HelpWindow()
-{
-}
-}
diff --git a/Applications/Spreadsheet/HelpWindow.h b/Applications/Spreadsheet/HelpWindow.h
deleted file mode 100644
index 1c02d90eed..0000000000
--- a/Applications/Spreadsheet/HelpWindow.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/JsonObject.h>
-#include <LibGUI/Dialog.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-#include <LibWeb/OutOfProcessWebView.h>
-
-namespace Spreadsheet {
-
-class HelpWindow : public GUI::Window {
-    C_OBJECT(HelpWindow);
-
-public:
-    static NonnullRefPtr<HelpWindow> the(GUI::Window* window)
-    {
-        if (s_the)
-            return *s_the;
-
-        return *(s_the = adopt(*new HelpWindow(window)));
-    }
-
-    virtual ~HelpWindow() override;
-
-    void set_docs(JsonObject&& docs);
-
-private:
-    static RefPtr<HelpWindow> s_the;
-    String render(const StringView& key);
-    HelpWindow(GUI::Window* parent = nullptr);
-
-    JsonObject m_docs;
-    RefPtr<Web::OutOfProcessWebView> m_webview;
-    RefPtr<GUI::ListView> m_listview;
-};
-
-}
diff --git a/Applications/Spreadsheet/JSIntegration.cpp b/Applications/Spreadsheet/JSIntegration.cpp
deleted file mode 100644
index 12a249593e..0000000000
--- a/Applications/Spreadsheet/JSIntegration.cpp
+++ /dev/null
@@ -1,444 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "JSIntegration.h"
-#include "Spreadsheet.h"
-#include "Workbook.h"
-#include <LibJS/Lexer.h>
-#include <LibJS/Runtime/Error.h>
-#include <LibJS/Runtime/GlobalObject.h>
-#include <LibJS/Runtime/Object.h>
-#include <LibJS/Runtime/Value.h>
-
-namespace Spreadsheet {
-
-Optional<FunctionAndArgumentIndex> get_function_and_argument_index(StringView source)
-{
-    JS::Lexer lexer { source };
-    // Track <identifier> <OpenParen>'s, and how many complete expressions are inside the parenthesised expression.
-    Vector<size_t> state;
-    StringView last_name;
-    Vector<StringView> names;
-    size_t open_parens_since_last_commit = 0;
-    size_t open_curlies_and_brackets_since_last_commit = 0;
-    bool previous_was_identifier = false;
-    auto token = lexer.next();
-    while (token.type() != JS::TokenType::Eof) {
-        switch (token.type()) {
-        case JS::TokenType::Identifier:
-            previous_was_identifier = true;
-            last_name = token.value();
-            break;
-        case JS::TokenType::ParenOpen:
-            if (!previous_was_identifier) {
-                open_parens_since_last_commit++;
-                break;
-            }
-            previous_was_identifier = false;
-            state.append(0);
-            names.append(last_name);
-            break;
-        case JS::TokenType::ParenClose:
-            previous_was_identifier = false;
-            if (open_parens_since_last_commit == 0) {
-                state.take_last();
-                names.take_last();
-                break;
-            }
-            --open_parens_since_last_commit;
-            break;
-        case JS::TokenType::Comma:
-            previous_was_identifier = false;
-            if (open_parens_since_last_commit == 0 && open_curlies_and_brackets_since_last_commit == 0) {
-                state.last()++;
-                break;
-            }
-            break;
-        case JS::TokenType::BracketOpen:
-            previous_was_identifier = false;
-            open_curlies_and_brackets_since_last_commit++;
-            break;
-        case JS::TokenType::BracketClose:
-            previous_was_identifier = false;
-            if (open_curlies_and_brackets_since_last_commit > 0)
-                open_curlies_and_brackets_since_last_commit--;
-            break;
-        case JS::TokenType::CurlyOpen:
-            previous_was_identifier = false;
-            open_curlies_and_brackets_since_last_commit++;
-            break;
-        case JS::TokenType::CurlyClose:
-            previous_was_identifier = false;
-            if (open_curlies_and_brackets_since_last_commit > 0)
-                open_curlies_and_brackets_since_last_commit--;
-            break;
-        default:
-            previous_was_identifier = false;
-            break;
-        }
-
-        token = lexer.next();
-    }
-    if (!names.is_empty() && !state.is_empty())
-        return FunctionAndArgumentIndex { names.last(), state.last() };
-    return {};
-}
-
-SheetGlobalObject::SheetGlobalObject(Sheet& sheet)
-    : m_sheet(sheet)
-{
-}
-
-SheetGlobalObject::~SheetGlobalObject()
-{
-}
-
-JS::Value SheetGlobalObject::get(const JS::PropertyName& name, JS::Value receiver) const
-{
-    if (name.is_string()) {
-        if (name.as_string() == "value") {
-            if (auto cell = m_sheet.current_evaluated_cell())
-                return cell->js_data();
-
-            return JS::js_undefined();
-        }
-        if (auto pos = Sheet::parse_cell_name(name.as_string()); pos.has_value()) {
-            auto& cell = m_sheet.ensure(pos.value());
-            cell.reference_from(m_sheet.current_evaluated_cell());
-            return cell.typed_js_data();
-        }
-    }
-
-    return GlobalObject::get(name, receiver);
-}
-
-bool SheetGlobalObject::put(const JS::PropertyName& name, JS::Value value, JS::Value receiver)
-{
-    if (name.is_string()) {
-        if (auto pos = Sheet::parse_cell_name(name.as_string()); pos.has_value()) {
-            auto& cell = m_sheet.ensure(pos.value());
-            if (auto current = m_sheet.current_evaluated_cell())
-                current->reference_from(&cell);
-
-            cell.set_data(value); // FIXME: This produces un-savable state!
-            return true;
-        }
-    }
-
-    return GlobalObject::put(name, value, receiver);
-}
-
-void SheetGlobalObject::initialize()
-{
-    GlobalObject::initialize();
-    define_native_function("get_real_cell_contents", get_real_cell_contents, 1);
-    define_native_function("set_real_cell_contents", set_real_cell_contents, 2);
-    define_native_function("parse_cell_name", parse_cell_name, 1);
-    define_native_function("current_cell_position", current_cell_position, 0);
-    define_native_function("column_arithmetic", column_arithmetic, 2);
-    define_native_function("column_index", column_index, 1);
-}
-
-void SheetGlobalObject::visit_edges(Visitor& visitor)
-{
-    GlobalObject::visit_edges(visitor);
-    for (auto& it : m_sheet.cells()) {
-        if (it.value->exception())
-            visitor.visit(it.value->exception());
-        visitor.visit(it.value->evaluated_data());
-    }
-}
-
-JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::get_real_cell_contents)
-{
-    auto* this_object = vm.this_value(global_object).to_object(global_object);
-    if (!this_object)
-        return JS::js_null();
-
-    if (StringView("SheetGlobalObject") != this_object->class_name()) {
-        vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "SheetGlobalObject");
-        return {};
-    }
-
-    auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
-
-    if (vm.argument_count() != 1) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected exactly one argument to get_real_cell_contents()");
-        return {};
-    }
-
-    auto name_value = vm.argument(0);
-    if (!name_value.is_string()) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected a String argument to get_real_cell_contents()");
-        return {};
-    }
-    auto position = Sheet::parse_cell_name(name_value.as_string().string());
-    if (!position.has_value()) {
-        vm.throw_exception<JS::TypeError>(global_object, "Invalid cell name");
-        return {};
-    }
-
-    const auto* cell = sheet_object->m_sheet.at(position.value());
-    if (!cell)
-        return JS::js_undefined();
-
-    if (cell->kind() == Spreadsheet::Cell::Kind::Formula)
-        return JS::js_string(vm.heap(), String::formatted("={}", cell->data()));
-
-    return JS::js_string(vm.heap(), cell->data());
-}
-
-JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::set_real_cell_contents)
-{
-    auto* this_object = vm.this_value(global_object).to_object(global_object);
-    if (!this_object)
-        return JS::js_null();
-
-    if (StringView("SheetGlobalObject") != this_object->class_name()) {
-        vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "SheetGlobalObject");
-        return {};
-    }
-
-    auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
-
-    if (vm.argument_count() != 2) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected exactly two arguments to set_real_cell_contents()");
-        return {};
-    }
-
-    auto name_value = vm.argument(0);
-    if (!name_value.is_string()) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected the first argument of set_real_cell_contents() to be a String");
-        return {};
-    }
-    auto position = Sheet::parse_cell_name(name_value.as_string().string());
-    if (!position.has_value()) {
-        vm.throw_exception<JS::TypeError>(global_object, "Invalid cell name");
-        return {};
-    }
-
-    auto new_contents_value = vm.argument(1);
-    if (!new_contents_value.is_string()) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected the second argument of set_real_cell_contents() to be a String");
-        return {};
-    }
-
-    auto& cell = sheet_object->m_sheet.ensure(position.value());
-    auto& new_contents = new_contents_value.as_string().string();
-    cell.set_data(new_contents);
-    return JS::js_null();
-}
-
-JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::parse_cell_name)
-{
-    if (vm.argument_count() != 1) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected exactly one argument to parse_cell_name()");
-        return {};
-    }
-    auto name_value = vm.argument(0);
-    if (!name_value.is_string()) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected a String argument to parse_cell_name()");
-        return {};
-    }
-    auto position = Sheet::parse_cell_name(name_value.as_string().string());
-    if (!position.has_value())
-        return JS::js_undefined();
-
-    auto object = JS::Object::create_empty(global_object);
-    object->put("column", JS::js_string(vm, position.value().column));
-    object->put("row", JS::Value((unsigned)position.value().row));
-
-    return object;
-}
-
-JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::current_cell_position)
-{
-    if (vm.argument_count() != 0) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected no arguments to current_cell_position()");
-        return {};
-    }
-
-    auto* this_object = vm.this_value(global_object).to_object(global_object);
-    if (!this_object)
-        return JS::js_null();
-
-    if (StringView("SheetGlobalObject") != this_object->class_name()) {
-        vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "SheetGlobalObject");
-        return {};
-    }
-
-    auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
-    auto* current_cell = sheet_object->m_sheet.current_evaluated_cell();
-    if (!current_cell)
-        return JS::js_null();
-
-    auto position = current_cell->position();
-
-    auto object = JS::Object::create_empty(global_object);
-    object->put("column", JS::js_string(vm, position.column));
-    object->put("row", JS::Value((unsigned)position.row));
-
-    return object;
-}
-
-JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::column_index)
-{
-    if (vm.argument_count() != 1) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected exactly one argument to column_index()");
-        return {};
-    }
-
-    auto column_name = vm.argument(0);
-    if (!column_name.is_string()) {
-        vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "String");
-        return {};
-    }
-
-    auto& column_name_str = column_name.as_string().string();
-
-    auto* this_object = vm.this_value(global_object).to_object(global_object);
-    if (!this_object)
-        return JS::js_null();
-
-    if (StringView("SheetGlobalObject") != this_object->class_name()) {
-        vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "SheetGlobalObject");
-        return {};
-    }
-
-    auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
-    auto& sheet = sheet_object->m_sheet;
-    auto column_index = sheet.column_index(column_name_str);
-    if (!column_index.has_value()) {
-        vm.throw_exception(global_object, JS::TypeError::create(global_object, String::formatted("'{}' is not a valid column", column_name_str)));
-        return {};
-    }
-
-    return JS::Value((i32)column_index.value());
-}
-
-JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::column_arithmetic)
-{
-    if (vm.argument_count() != 2) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected exactly two arguments to column_arithmetic()");
-        return {};
-    }
-
-    auto column_name = vm.argument(0);
-    if (!column_name.is_string()) {
-        vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "String");
-        return {};
-    }
-
-    auto& column_name_str = column_name.as_string().string();
-
-    auto offset = vm.argument(1).to_number(global_object);
-    if (!offset.is_number())
-        return {};
-
-    auto offset_number = offset.as_i32();
-
-    auto* this_object = vm.this_value(global_object).to_object(global_object);
-    if (!this_object)
-        return JS::js_null();
-
-    if (StringView("SheetGlobalObject") != this_object->class_name()) {
-        vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "SheetGlobalObject");
-        return {};
-    }
-
-    auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
-    auto& sheet = sheet_object->m_sheet;
-    auto new_column = sheet.column_arithmetic(column_name_str, offset_number);
-    if (!new_column.has_value()) {
-        vm.throw_exception(global_object, JS::TypeError::create(global_object, String::formatted("'{}' is not a valid column", column_name_str)));
-        return {};
-    }
-
-    return JS::js_string(vm, new_column.release_value());
-}
-
-WorkbookObject::WorkbookObject(Workbook& workbook)
-    : JS::Object(*JS::Object::create_empty(workbook.global_object()))
-    , m_workbook(workbook)
-{
-}
-
-WorkbookObject::~WorkbookObject()
-{
-}
-
-void WorkbookObject::initialize(JS::GlobalObject& global_object)
-{
-    Object::initialize(global_object);
-    define_native_function("sheet", sheet, 1);
-}
-
-void WorkbookObject::visit_edges(Visitor& visitor)
-{
-    Base::visit_edges(visitor);
-    for (auto& sheet : m_workbook.sheets())
-        visitor.visit(&sheet.global_object());
-}
-
-JS_DEFINE_NATIVE_FUNCTION(WorkbookObject::sheet)
-{
-    if (vm.argument_count() != 1) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected exactly one argument to sheet()");
-        return {};
-    }
-    auto name_value = vm.argument(0);
-    if (!name_value.is_string() && !name_value.is_number()) {
-        vm.throw_exception<JS::TypeError>(global_object, "Expected a String or Number argument to sheet()");
-        return {};
-    }
-
-    auto* this_object = vm.this_value(global_object).to_object(global_object);
-    if (!this_object)
-        return {};
-
-    if (!is<WorkbookObject>(this_object)) {
-        vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotA, "WorkbookObject");
-        return {};
-    }
-
-    auto& workbook = static_cast<WorkbookObject*>(this_object)->m_workbook;
-
-    if (name_value.is_string()) {
-        auto& name = name_value.as_string().string();
-        for (auto& sheet : workbook.sheets()) {
-            if (sheet.name() == name)
-                return JS::Value(&sheet.global_object());
-        }
-    } else {
-        auto index = name_value.as_size_t();
-        if (index < workbook.sheets().size())
-            return JS::Value(&workbook.sheets()[index].global_object());
-    }
-
-    return JS::js_undefined();
-}
-
-}
diff --git a/Applications/Spreadsheet/JSIntegration.h b/Applications/Spreadsheet/JSIntegration.h
deleted file mode 100644
index 88f46d929d..0000000000
--- a/Applications/Spreadsheet/JSIntegration.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Forward.h"
-#include <LibJS/Forward.h>
-#include <LibJS/Runtime/GlobalObject.h>
-
-namespace Spreadsheet {
-
-struct FunctionAndArgumentIndex {
-    String function_name;
-    size_t argument_index { 0 };
-};
-Optional<FunctionAndArgumentIndex> get_function_and_argument_index(StringView source);
-
-class SheetGlobalObject final : public JS::GlobalObject {
-    JS_OBJECT(SheetGlobalObject, JS::GlobalObject);
-
-public:
-    SheetGlobalObject(Sheet&);
-
-    virtual ~SheetGlobalObject() override;
-
-    virtual JS::Value get(const JS::PropertyName&, JS::Value receiver = {}) const override;
-    virtual bool put(const JS::PropertyName&, JS::Value value, JS::Value receiver = {}) override;
-    virtual void initialize() override;
-
-    JS_DECLARE_NATIVE_FUNCTION(get_real_cell_contents);
-    JS_DECLARE_NATIVE_FUNCTION(set_real_cell_contents);
-    JS_DECLARE_NATIVE_FUNCTION(parse_cell_name);
-    JS_DECLARE_NATIVE_FUNCTION(current_cell_position);
-    JS_DECLARE_NATIVE_FUNCTION(column_index);
-    JS_DECLARE_NATIVE_FUNCTION(column_arithmetic);
-
-private:
-    virtual void visit_edges(Visitor&) override;
-    Sheet& m_sheet;
-};
-
-class WorkbookObject final : public JS::Object {
-    JS_OBJECT(WorkbookObject, JS::Object);
-
-public:
-    WorkbookObject(Workbook&);
-
-    virtual ~WorkbookObject() override;
-
-    virtual void initialize(JS::GlobalObject&) override;
-
-    JS_DECLARE_NATIVE_FUNCTION(sheet);
-
-private:
-    virtual void visit_edges(Visitor&) override;
-    Workbook& m_workbook;
-};
-
-}
diff --git a/Applications/Spreadsheet/Position.h b/Applications/Spreadsheet/Position.h
deleted file mode 100644
index af7d7f70a9..0000000000
--- a/Applications/Spreadsheet/Position.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/String.h>
-#include <AK/Types.h>
-#include <AK/URL.h>
-
-namespace Spreadsheet {
-
-struct Position {
-    String column;
-    size_t row { 0 };
-
-    bool operator==(const Position& other) const
-    {
-        return row == other.row && column == other.column;
-    }
-
-    bool operator!=(const Position& other) const
-    {
-        return !(other == *this);
-    }
-
-    URL to_url() const
-    {
-        URL url;
-        url.set_protocol("spreadsheet");
-        url.set_host("cell");
-        url.set_path(String::formatted("/{}", getpid()));
-        url.set_fragment(String::formatted("{}{}", column, row));
-        return url;
-    }
-};
-
-}
diff --git a/Applications/Spreadsheet/Readers/CSV.h b/Applications/Spreadsheet/Readers/CSV.h
deleted file mode 100644
index 866ae67141..0000000000
--- a/Applications/Spreadsheet/Readers/CSV.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "XSV.h"
-#include <AK/Forward.h>
-#include <AK/StringView.h>
-
-namespace Reader {
-
-class CSV : public XSV {
-public:
-    CSV(StringView source, ParserBehaviour behaviours = default_behaviours())
-        : XSV(source, { ",", "\"", ParserTraits::Repeat }, behaviours)
-    {
-    }
-};
-
-}
diff --git a/Applications/Spreadsheet/Readers/Test/TestXSV.cpp b/Applications/Spreadsheet/Readers/Test/TestXSV.cpp
deleted file mode 100644
index b80093d556..0000000000
--- a/Applications/Spreadsheet/Readers/Test/TestXSV.cpp
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/TestSuite.h>
-
-#include "../CSV.h"
-#include "../XSV.h"
-#include <LibCore/File.h>
-
-TEST_CASE(should_parse_valid_data)
-{
-    {
-        auto data = R"~~~(Foo, Bar, Baz
-                      1, 2, 3
-                      4, 5, 6
-                      """x", y"z, 9)~~~";
-        auto csv = Reader::CSV { data, Reader::default_behaviours() | Reader::ParserBehaviour::ReadHeaders | Reader::ParserBehaviour::TrimLeadingFieldSpaces };
-        EXPECT(!csv.has_error());
-
-        EXPECT_EQ(csv[0]["Foo"], "1");
-        EXPECT_EQ(csv[2]["Foo"], "\"x");
-        EXPECT_EQ(csv[2]["Bar"], "y\"z");
-    }
-
-    {
-        auto data = R"~~~(Foo, Bar, Baz
-                      1     	 , 2, 3
-                      4, "5 "       , 6
-                      """x", y"z, 9                       )~~~";
-        auto csv = Reader::CSV { data, Reader::default_behaviours() | Reader::ParserBehaviour::ReadHeaders | Reader::ParserBehaviour::TrimLeadingFieldSpaces | Reader::ParserBehaviour::TrimTrailingFieldSpaces };
-        EXPECT(!csv.has_error());
-
-        EXPECT_EQ(csv[0]["Foo"], "1");
-        EXPECT_EQ(csv[1]["Bar"], "5 ");
-        EXPECT_EQ(csv[2]["Foo"], "\"x");
-        EXPECT_EQ(csv[2]["Baz"], "9");
-    }
-}
-
-TEST_CASE(should_fail_nicely)
-{
-    {
-        auto data = R"~~~(Foo, Bar, Baz
-                      x, y)~~~";
-        auto csv = Reader::CSV { data, Reader::default_behaviours() | Reader::ParserBehaviour::ReadHeaders | Reader::ParserBehaviour::TrimLeadingFieldSpaces };
-        EXPECT(csv.has_error());
-        EXPECT_EQ(csv.error(), Reader::ReadError::NonConformingColumnCount);
-    }
-
-    {
-        auto data = R"~~~(Foo, Bar, Baz
-                      x, y, "z)~~~";
-        auto csv = Reader::CSV { data, Reader::default_behaviours() | Reader::ParserBehaviour::ReadHeaders | Reader::ParserBehaviour::TrimLeadingFieldSpaces };
-        EXPECT(csv.has_error());
-        EXPECT_EQ(csv.error(), Reader::ReadError::QuoteFailure);
-    }
-}
-
-TEST_CASE(should_iterate_rows)
-{
-    auto data = R"~~~(Foo, Bar, Baz
-                      1, 2, 3
-                      4, 5, 6
-                      """x", y"z, 9)~~~";
-    auto csv = Reader::CSV { data, Reader::default_behaviours() | Reader::ParserBehaviour::ReadHeaders | Reader::ParserBehaviour::TrimLeadingFieldSpaces };
-    EXPECT(!csv.has_error());
-
-    bool ran = false;
-    for (auto row : csv)
-        ran = !row[0].is_empty();
-
-    EXPECT(ran);
-}
-
-BENCHMARK_CASE(fairly_big_data)
-{
-    auto file_or_error = Core::File::open(__FILE__ ".data", Core::IODevice::OpenMode::ReadOnly);
-    EXPECT_EQ_FORCE(file_or_error.is_error(), false);
-
-    auto data = file_or_error.value()->read_all();
-    auto csv = Reader::CSV { data, Reader::default_behaviours() | Reader::ParserBehaviour::ReadHeaders };
-
-    EXPECT(!csv.has_error());
-    EXPECT_EQ(csv.size(), 100000u);
-}
-
-TEST_MAIN(XSV)
diff --git a/Applications/Spreadsheet/Readers/XSV.cpp b/Applications/Spreadsheet/Readers/XSV.cpp
deleted file mode 100644
index 99a61b0abc..0000000000
--- a/Applications/Spreadsheet/Readers/XSV.cpp
+++ /dev/null
@@ -1,272 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "XSV.h"
-#include <AK/StringBuilder.h>
-
-namespace Reader {
-
-ParserBehaviour operator&(ParserBehaviour left, ParserBehaviour right)
-{
-    return static_cast<ParserBehaviour>(static_cast<u32>(left) & static_cast<u32>(right));
-}
-
-ParserBehaviour operator|(ParserBehaviour left, ParserBehaviour right)
-{
-    return static_cast<ParserBehaviour>(static_cast<u32>(left) | static_cast<u32>(right));
-}
-
-void XSV::set_error(ReadError error)
-{
-    if (m_error == ReadError::None)
-        m_error = error;
-}
-
-Vector<String> XSV::headers() const
-{
-    Vector<String> headers;
-    for (auto& field : m_names)
-        headers.append(field.is_string_view ? field.as_string_view : field.as_string.view());
-
-    return headers;
-}
-
-void XSV::parse()
-{
-    if ((m_behaviours & ParserBehaviour::ReadHeaders) != ParserBehaviour::None)
-        read_headers();
-
-    while (!has_error() && !m_lexer.is_eof())
-        m_rows.append(read_row());
-
-    if (!m_lexer.is_eof())
-        set_error(ReadError::DataPastLogicalEnd);
-}
-
-void XSV::read_headers()
-{
-    if (!m_names.is_empty()) {
-        set_error(ReadError::InternalError);
-        m_names.clear();
-    }
-
-    m_names = read_row(true);
-}
-
-Vector<XSV::Field> XSV::read_row(bool header_row)
-{
-    Vector<Field> row;
-    bool first = true;
-    while (!(m_lexer.is_eof() || m_lexer.next_is('\n') || m_lexer.next_is("\r\n")) && (first || m_lexer.consume_specific(m_traits.separator))) {
-        first = false;
-        row.append(read_one_field());
-    }
-
-    if (!m_lexer.is_eof()) {
-        auto crlf_ok = m_lexer.consume_specific("\r\n");
-        if (!crlf_ok) {
-            auto lf_ok = m_lexer.consume_specific('\n');
-            if (!lf_ok)
-                set_error(ReadError::DataPastLogicalEnd);
-        }
-    }
-
-    if (!header_row && (m_behaviours & ParserBehaviour::ReadHeaders) != ParserBehaviour::None && row.size() != m_names.size())
-        set_error(ReadError::NonConformingColumnCount);
-
-    return row;
-}
-
-XSV::Field XSV::read_one_field()
-{
-    if ((m_behaviours & ParserBehaviour::TrimLeadingFieldSpaces) != ParserBehaviour::None)
-        m_lexer.consume_while(is_any_of(" \t\v"));
-
-    bool is_quoted = false;
-    Field field;
-    if (m_lexer.next_is(m_traits.quote.view())) {
-        is_quoted = true;
-        field = read_one_quoted_field();
-    } else {
-        field = read_one_unquoted_field();
-    }
-
-    if ((m_behaviours & ParserBehaviour::TrimTrailingFieldSpaces) != ParserBehaviour::None) {
-        m_lexer.consume_while(is_any_of(" \t\v"));
-
-        if (!is_quoted) {
-            // Also have to trim trailing spaces from unquoted fields.
-            StringView view;
-            if (field.is_string_view)
-                view = field.as_string_view;
-            else
-                view = field.as_string;
-
-            if (!view.is_empty()) {
-                ssize_t i = view.length() - 1;
-                for (; i >= 0; --i) {
-                    if (!view.substring_view(i, 1).is_one_of(" ", "\t", "\v"))
-                        break;
-                }
-                view = view.substring_view(0, i + 1);
-            }
-
-            if (field.is_string_view)
-                field.as_string_view = view;
-            else
-                field.as_string = field.as_string.substring(0, view.length());
-        }
-    }
-
-    return field;
-}
-
-XSV::Field XSV::read_one_quoted_field()
-{
-    if (!m_lexer.consume_specific(m_traits.quote))
-        set_error(ReadError::InternalError);
-
-    size_t start = m_lexer.tell(), end = start;
-    bool is_copy = false;
-    StringBuilder builder;
-    auto allow_newlines = (m_behaviours & ParserBehaviour::AllowNewlinesInFields) != ParserBehaviour::None;
-
-    for (; !m_lexer.is_eof();) {
-        char ch;
-        switch (m_traits.quote_escape) {
-        case ParserTraits::Backslash:
-            if (m_lexer.consume_specific('\\') && m_lexer.consume_specific(m_traits.quote)) {
-                // If there is an escaped quote, we have no choice but to make a copy.
-                if (!is_copy) {
-                    is_copy = true;
-                    builder.append(m_source.substring_view(start, end - start));
-                }
-                builder.append(m_traits.quote);
-                end = m_lexer.tell();
-                continue;
-            }
-            break;
-        case ParserTraits::Repeat:
-            if (m_lexer.consume_specific(m_traits.quote)) {
-                if (m_lexer.consume_specific(m_traits.quote)) {
-                    // If there is an escaped quote, we have no choice but to make a copy.
-                    if (!is_copy) {
-                        is_copy = true;
-                        builder.append(m_source.substring_view(start, end - start));
-                    }
-                    builder.append(m_traits.quote);
-                    end = m_lexer.tell();
-                    continue;
-                }
-                for (size_t i = 0; i < m_traits.quote.length(); ++i)
-                    m_lexer.retreat();
-                goto end;
-            }
-            break;
-        }
-
-        if (m_lexer.next_is(m_traits.quote.view()))
-            goto end;
-
-        if (!allow_newlines) {
-            if (m_lexer.next_is('\n') || m_lexer.next_is("\r\n"))
-                goto end;
-        }
-
-        ch = m_lexer.consume();
-        if (is_copy)
-            builder.append(ch);
-        end = m_lexer.tell();
-        continue;
-
-    end:
-        break;
-    }
-
-    if (!m_lexer.consume_specific(m_traits.quote))
-        set_error(ReadError::QuoteFailure);
-
-    if (is_copy)
-        return { {}, builder.to_string(), false };
-
-    return { m_source.substring_view(start, end - start), {}, true };
-}
-
-XSV::Field XSV::read_one_unquoted_field()
-{
-    size_t start = m_lexer.tell(), end = start;
-    bool allow_quote_in_field = (m_behaviours & ParserBehaviour::QuoteOnlyInFieldStart) != ParserBehaviour::None;
-
-    for (; !m_lexer.is_eof();) {
-        if (m_lexer.next_is(m_traits.separator.view()))
-            break;
-
-        if (m_lexer.next_is("\r\n") || m_lexer.next_is("\n"))
-            break;
-
-        if (m_lexer.consume_specific(m_traits.quote)) {
-            if (!allow_quote_in_field)
-                set_error(ReadError::QuoteFailure);
-            end = m_lexer.tell();
-            continue;
-        }
-
-        m_lexer.consume();
-        end = m_lexer.tell();
-    }
-
-    return { m_source.substring_view(start, end - start), {}, true };
-}
-
-StringView XSV::Row::operator[](StringView name) const
-{
-    ASSERT(!m_xsv.m_names.is_empty());
-    auto it = m_xsv.m_names.find_if([&](const auto& entry) { return name == entry; });
-    ASSERT(!it.is_end());
-
-    return (*this)[it.index()];
-}
-
-StringView XSV::Row::operator[](size_t column) const
-{
-    auto& field = m_xsv.m_rows[m_index][column];
-    if (field.is_string_view)
-        return field.as_string_view;
-    return field.as_string;
-}
-
-const XSV::Row XSV::operator[](size_t index) const
-{
-    return const_cast<XSV&>(*this)[index];
-}
-
-XSV::Row XSV::operator[](size_t index)
-{
-    ASSERT(m_rows.size() > index);
-    return Row { *this, index };
-}
-
-}
diff --git a/Applications/Spreadsheet/Readers/XSV.h b/Applications/Spreadsheet/Readers/XSV.h
deleted file mode 100644
index 0b32ca767d..0000000000
--- a/Applications/Spreadsheet/Readers/XSV.h
+++ /dev/null
@@ -1,208 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/GenericLexer.h>
-#include <AK/String.h>
-#include <AK/StringView.h>
-#include <AK/Types.h>
-#include <AK/Vector.h>
-
-namespace Reader {
-
-enum class ParserBehaviour : u32 {
-    None = 0,
-    ReadHeaders = 1,
-    AllowNewlinesInFields = ReadHeaders << 1,
-    TrimLeadingFieldSpaces = ReadHeaders << 2,
-    TrimTrailingFieldSpaces = ReadHeaders << 3,
-    QuoteOnlyInFieldStart = ReadHeaders << 4,
-};
-
-ParserBehaviour operator&(ParserBehaviour left, ParserBehaviour right);
-ParserBehaviour operator|(ParserBehaviour left, ParserBehaviour right);
-
-struct ParserTraits {
-    String separator;
-    String quote { "\"" };
-    enum {
-        Repeat,
-        Backslash,
-    } quote_escape { Repeat };
-};
-
-#define ENUMERATE_READ_ERRORS()                                                   \
-    E(None, "No errors")                                                          \
-    E(NonConformingColumnCount, "Header count does not match given column count") \
-    E(QuoteFailure, "Quoting failure")                                            \
-    E(InternalError, "Internal error")                                            \
-    E(DataPastLogicalEnd, "Exrta data past the logical end of the rows")
-
-enum class ReadError {
-#define E(name, _) name,
-    ENUMERATE_READ_ERRORS()
-#undef E
-};
-
-inline constexpr ParserBehaviour default_behaviours()
-{
-    return ParserBehaviour::QuoteOnlyInFieldStart;
-}
-
-class XSV {
-public:
-    XSV(StringView source, const ParserTraits& traits, ParserBehaviour behaviours = default_behaviours())
-        : m_source(source)
-        , m_lexer(m_source)
-        , m_traits(traits)
-        , m_behaviours(behaviours)
-    {
-        parse();
-    }
-
-    virtual ~XSV() { }
-
-    bool has_error() const { return m_error != ReadError::None; }
-    ReadError error() const { return m_error; }
-    String error_string() const
-    {
-        switch (m_error) {
-#define E(x, y)        \
-    case ReadError::x: \
-        return y;
-
-            ENUMERATE_READ_ERRORS();
-#undef E
-        }
-        ASSERT_NOT_REACHED();
-    }
-
-    size_t size() const { return m_rows.size(); }
-    Vector<String> headers() const;
-
-    class Row {
-    public:
-        explicit Row(XSV& xsv, size_t index)
-            : m_xsv(xsv)
-            , m_index(index)
-        {
-        }
-
-        StringView operator[](StringView name) const;
-        StringView operator[](size_t column) const;
-
-        size_t index() const { return m_index; }
-
-        // FIXME: Implement begin() and end(), keeping `Field' out of the API.
-
-    private:
-        XSV& m_xsv;
-        size_t m_index { 0 };
-    };
-
-    template<bool const_>
-    class RowIterator {
-    public:
-        explicit RowIterator(const XSV& xsv, size_t init_index = 0) requires(const_)
-            : m_xsv(const_cast<XSV&>(xsv))
-            , m_index(init_index)
-        {
-        }
-
-        explicit RowIterator(XSV& xsv, size_t init_index = 0) requires(!const_)
-            : m_xsv(xsv)
-            , m_index(init_index)
-        {
-        }
-
-        Row operator*() const { return Row { m_xsv, m_index }; }
-        Row operator*() requires(!const_) { return Row { m_xsv, m_index }; }
-
-        RowIterator& operator++()
-        {
-            ++m_index;
-            return *this;
-        }
-
-        bool is_end() const { return m_index == m_xsv.m_rows.size(); }
-        bool operator==(const RowIterator& other) const
-        {
-            return m_index == other.m_index && &m_xsv == &other.m_xsv;
-        }
-        bool operator==(const RowIterator<!const_>& other) const
-        {
-            return m_index == other.m_index && &m_xsv == &other.m_xsv;
-        }
-
-    private:
-        XSV& m_xsv;
-        size_t m_index { 0 };
-    };
-
-    const Row operator[](size_t index) const;
-    Row operator[](size_t index);
-
-    auto begin() { return RowIterator<false>(*this); }
-    auto end() { return RowIterator<false>(*this, m_rows.size()); }
-
-    auto begin() const { return RowIterator<true>(*this); }
-    auto end() const { return RowIterator<true>(*this, m_rows.size()); }
-
-    using ConstIterator = RowIterator<true>;
-    using Iterator = RowIterator<false>;
-
-private:
-    struct Field {
-        StringView as_string_view;
-        String as_string; // This member only used if the parser couldn't use the original source verbatim.
-        bool is_string_view { true };
-
-        bool operator==(StringView other) const
-        {
-            if (is_string_view)
-                return other == as_string_view;
-            return as_string == other;
-        }
-    };
-    void set_error(ReadError error);
-    void parse();
-    void read_headers();
-    Vector<Field> read_row(bool header_row = false);
-    Field read_one_field();
-    Field read_one_quoted_field();
-    Field read_one_unquoted_field();
-
-    StringView m_source;
-    GenericLexer m_lexer;
-    const ParserTraits& m_traits;
-    ParserBehaviour m_behaviours;
-    Vector<Field> m_names;
-    Vector<Vector<Field>> m_rows;
-    ReadError m_error { ReadError::None };
-};
-
-}
diff --git a/Applications/Spreadsheet/Spreadsheet.cpp b/Applications/Spreadsheet/Spreadsheet.cpp
deleted file mode 100644
index 0d20b22fdd..0000000000
--- a/Applications/Spreadsheet/Spreadsheet.cpp
+++ /dev/null
@@ -1,734 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Spreadsheet.h"
-#include "JSIntegration.h"
-#include "Workbook.h"
-#include <AK/ByteBuffer.h>
-#include <AK/GenericLexer.h>
-#include <AK/JsonArray.h>
-#include <AK/JsonObject.h>
-#include <AK/JsonParser.h>
-#include <AK/ScopeGuard.h>
-#include <AK/TemporaryChange.h>
-#include <AK/URL.h>
-#include <LibCore/File.h>
-#include <LibJS/Parser.h>
-#include <LibJS/Runtime/Function.h>
-#include <ctype.h>
-
-//#define COPY_DEBUG
-
-namespace Spreadsheet {
-
-Sheet::Sheet(const StringView& name, Workbook& workbook)
-    : Sheet(workbook)
-{
-    m_name = name;
-
-    for (size_t i = 0; i < default_row_count; ++i)
-        add_row();
-
-    for (size_t i = 0; i < default_column_count; ++i)
-        add_column();
-}
-
-Sheet::Sheet(Workbook& workbook)
-    : m_workbook(workbook)
-{
-    JS::DeferGC defer_gc(m_workbook.interpreter().heap());
-    m_global_object = m_workbook.interpreter().heap().allocate_without_global_object<SheetGlobalObject>(*this);
-    global_object().initialize();
-    global_object().put("workbook", m_workbook.workbook_object());
-    global_object().put("thisSheet", &global_object()); // Self-reference is unfortunate, but required.
-
-    // Sadly, these have to be evaluated once per sheet.
-    auto file_or_error = Core::File::open("/res/js/Spreadsheet/runtime.js", Core::IODevice::OpenMode::ReadOnly);
-    if (!file_or_error.is_error()) {
-        auto buffer = file_or_error.value()->read_all();
-        JS::Parser parser { JS::Lexer(buffer) };
-        if (parser.has_errors()) {
-            warnln("Spreadsheet: Failed to parse runtime code");
-            parser.print_errors();
-        } else {
-            interpreter().run(global_object(), parser.parse_program());
-            if (auto exc = interpreter().exception()) {
-                warnln("Spreadsheet: Failed to run runtime code: ");
-                for (auto& t : exc->trace())
-                    warnln("{}", t);
-                interpreter().vm().clear_exception();
-            }
-        }
-    }
-}
-
-Sheet::~Sheet()
-{
-}
-
-JS::Interpreter& Sheet::interpreter() const
-{
-    return m_workbook.interpreter();
-}
-
-size_t Sheet::add_row()
-{
-    return m_rows++;
-}
-
-static String convert_to_string(size_t value, unsigned base = 26, StringView map = {})
-{
-    if (map.is_null())
-        map = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
-
-    ASSERT(base >= 2 && base <= map.length());
-
-    // The '8 bits per byte' assumption may need to go?
-    Array<char, round_up_to_power_of_two(sizeof(size_t) * 8 + 1, 2)> buffer;
-    size_t i = 0;
-    do {
-        buffer[i++] = map[value % base];
-        value /= base;
-    } while (value > 0);
-
-    // NOTE: Weird as this may seem, the thing that comes after 'A' is 'AA', which as a number would be '00'
-    //       to make this work, only the most significant digit has to be in a range of (1..25) as opposed to (0..25),
-    //       but only if it's not the only digit in the string.
-    if (i > 1)
-        --buffer[i - 1];
-
-    for (size_t j = 0; j < i / 2; ++j)
-        swap(buffer[j], buffer[i - j - 1]);
-
-    return String { ReadonlyBytes(buffer.data(), i) };
-}
-
-static size_t convert_from_string(StringView str, unsigned base = 26, StringView map = {})
-{
-    if (map.is_null())
-        map = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
-
-    ASSERT(base >= 2 && base <= map.length());
-
-    size_t value = 0;
-    for (size_t i = str.length(); i > 0; --i) {
-        auto digit_value = map.find_first_of(str[i - 1]).value_or(0);
-        // NOTE: Refer to the note in `convert_to_string()'.
-        if (i == str.length() && str.length() > 1)
-            ++digit_value;
-        value = value * base + digit_value;
-    }
-
-    return value;
-}
-
-String Sheet::add_column()
-{
-    auto next_column = convert_to_string(m_columns.size());
-    m_columns.append(next_column);
-    return next_column;
-}
-
-void Sheet::update()
-{
-    if (m_should_ignore_updates) {
-        m_update_requested = true;
-        return;
-    }
-    m_visited_cells_in_update.clear();
-    Vector<Cell*> cells_copy;
-
-    // Grab a copy as updates might insert cells into the table.
-    for (auto& it : m_cells) {
-        if (it.value->dirty()) {
-            cells_copy.append(it.value);
-            m_workbook.set_dirty(true);
-        }
-    }
-
-    for (auto& cell : cells_copy)
-        update(*cell);
-
-    m_visited_cells_in_update.clear();
-}
-
-void Sheet::update(Cell& cell)
-{
-    if (m_should_ignore_updates) {
-        m_update_requested = true;
-        return;
-    }
-    if (cell.dirty()) {
-        if (has_been_visited(&cell)) {
-            // This may be part of an cyclic reference chain,
-            // so just ignore it.
-            cell.clear_dirty();
-            return;
-        }
-        m_visited_cells_in_update.set(&cell);
-        cell.update_data({});
-    }
-}
-
-Sheet::ValueAndException Sheet::evaluate(const StringView& source, Cell* on_behalf_of)
-{
-    TemporaryChange cell_change { m_current_cell_being_evaluated, on_behalf_of };
-    ScopeGuard clear_exception { [&] { interpreter().vm().clear_exception(); } };
-
-    auto parser = JS::Parser(JS::Lexer(source));
-    if (parser.has_errors() || interpreter().exception())
-        return { JS::js_undefined(), interpreter().exception() };
-
-    auto program = parser.parse_program();
-    interpreter().run(global_object(), program);
-    if (interpreter().exception()) {
-        auto exc = interpreter().exception();
-        return { JS::js_undefined(), exc };
-    }
-
-    auto value = interpreter().vm().last_value();
-    if (value.is_empty())
-        return { JS::js_undefined(), {} };
-    return { value, {} };
-}
-
-Cell* Sheet::at(const StringView& name)
-{
-    auto pos = parse_cell_name(name);
-    if (pos.has_value())
-        return at(pos.value());
-
-    return nullptr;
-}
-
-Cell* Sheet::at(const Position& position)
-{
-    auto it = m_cells.find(position);
-
-    if (it == m_cells.end())
-        return nullptr;
-
-    return it->value;
-}
-
-Optional<Position> Sheet::parse_cell_name(const StringView& name)
-{
-    GenericLexer lexer(name);
-    auto col = lexer.consume_while(isalpha);
-    auto row = lexer.consume_while(isdigit);
-
-    if (!lexer.is_eof() || row.is_empty() || col.is_empty())
-        return {};
-
-    return Position { col, row.to_uint().value() };
-}
-
-Optional<size_t> Sheet::column_index(const StringView& column_name) const
-{
-    auto index = convert_from_string(column_name);
-    if (m_columns.size() <= index || m_columns[index] != column_name)
-        return {};
-
-    return index;
-}
-
-Optional<String> Sheet::column_arithmetic(const StringView& column_name, int offset)
-{
-    auto maybe_index = column_index(column_name);
-    if (!maybe_index.has_value())
-        return {};
-
-    if (offset < 0 && maybe_index.value() < (size_t)(0 - offset))
-        return m_columns.first();
-
-    auto index = maybe_index.value() + offset;
-    if (m_columns.size() > index)
-        return m_columns[index];
-
-    for (size_t i = m_columns.size(); i <= index; ++i)
-        add_column();
-
-    return m_columns.last();
-}
-
-Cell* Sheet::from_url(const URL& url)
-{
-    auto maybe_position = position_from_url(url);
-    if (!maybe_position.has_value())
-        return nullptr;
-
-    return at(maybe_position.value());
-}
-
-Optional<Position> Sheet::position_from_url(const URL& url) const
-{
-    if (!url.is_valid()) {
-        dbgln("Invalid url: {}", url.to_string());
-        return {};
-    }
-
-    if (url.protocol() != "spreadsheet" || url.host() != "cell") {
-        dbgln("Bad url: {}", url.to_string());
-        return {};
-    }
-
-    // FIXME: Figure out a way to do this cross-process.
-    ASSERT(url.path() == String::formatted("/{}", getpid()));
-
-    return parse_cell_name(url.fragment());
-}
-
-Position Sheet::offset_relative_to(const Position& base, const Position& offset, const Position& offset_base) const
-{
-    auto offset_column_it = m_columns.find(offset.column);
-    auto offset_base_column_it = m_columns.find(offset_base.column);
-    auto base_column_it = m_columns.find(base.column);
-
-    if (offset_column_it.is_end()) {
-        dbgln("Column '{}' does not exist!", offset.column);
-        return base;
-    }
-    if (offset_base_column_it.is_end()) {
-        dbgln("Column '{}' does not exist!", offset.column);
-        return base;
-    }
-    if (base_column_it.is_end()) {
-        dbgln("Column '{}' does not exist!", offset.column);
-        return offset;
-    }
-
-    auto new_column = column(offset_column_it.index() + base_column_it.index() - offset_base_column_it.index());
-    auto new_row = offset.row + base.row - offset_base.row;
-
-    return { move(new_column), new_row };
-}
-
-void Sheet::copy_cells(Vector<Position> from, Vector<Position> to, Optional<Position> resolve_relative_to)
-{
-    auto copy_to = [&](auto& source_position, Position target_position) {
-        auto& target_cell = ensure(target_position);
-        auto* source_cell = at(source_position);
-
-        if (!source_cell) {
-            target_cell.set_data("");
-            return;
-        }
-
-        target_cell.copy_from(*source_cell);
-    };
-
-    if (from.size() == to.size()) {
-        auto from_it = from.begin();
-        // FIXME: Ordering.
-        for (auto& position : to)
-            copy_to(*from_it++, position);
-
-        return;
-    }
-
-    if (to.size() == 1) {
-        // Resolve each index as relative to the first index offset from the selection.
-        auto& target = to.first();
-
-        for (auto& position : from) {
-#ifdef COPY_DEBUG
-            dbg() << "Paste from '" << position.to_url() << "' to '" << target.to_url() << "'";
-#endif
-            copy_to(position, resolve_relative_to.has_value() ? offset_relative_to(target, position, resolve_relative_to.value()) : target);
-        }
-
-        return;
-    }
-
-    if (from.size() == 1) {
-        // Fill the target selection with the single cell.
-        auto& source = from.first();
-        for (auto& position : to) {
-#ifdef COPY_DEBUG
-            dbg() << "Paste from '" << source.to_url() << "' to '" << position.to_url() << "'";
-#endif
-            copy_to(source, resolve_relative_to.has_value() ? offset_relative_to(position, source, resolve_relative_to.value()) : position);
-        }
-        return;
-    }
-
-    // Just disallow misaligned copies.
-    dbgln("Cannot copy {} cells to {} cells", from.size(), to.size());
-}
-
-RefPtr<Sheet> Sheet::from_json(const JsonObject& object, Workbook& workbook)
-{
-    auto sheet = adopt(*new Sheet(workbook));
-    auto rows = object.get("rows").to_u32(default_row_count);
-    auto columns = object.get("columns");
-    auto name = object.get("name").as_string_or("Sheet");
-
-    sheet->set_name(name);
-
-    for (size_t i = 0; i < max(rows, (unsigned)Sheet::default_row_count); ++i)
-        sheet->add_row();
-
-    // FIXME: Better error checking.
-    if (columns.is_array()) {
-        columns.as_array().for_each([&](auto& value) {
-            sheet->m_columns.append(value.as_string());
-            return IterationDecision::Continue;
-        });
-    }
-
-    if (sheet->m_columns.size() < default_column_count && sheet->columns_are_standard()) {
-        for (size_t i = sheet->m_columns.size(); i < default_column_count; ++i)
-            sheet->add_column();
-    }
-
-    auto cells = object.get("cells").as_object();
-    auto json = sheet->interpreter().global_object().get("JSON");
-    auto& parse_function = json.as_object().get("parse").as_function();
-
-    auto read_format = [](auto& format, const auto& obj) {
-        if (auto value = obj.get("foreground_color"); value.is_string())
-            format.foreground_color = Color::from_string(value.as_string());
-        if (auto value = obj.get("background_color"); value.is_string())
-            format.background_color = Color::from_string(value.as_string());
-    };
-
-    cells.for_each_member([&](auto& name, JsonValue& value) {
-        auto position_option = parse_cell_name(name);
-        if (!position_option.has_value())
-            return IterationDecision::Continue;
-
-        auto position = position_option.value();
-        auto& obj = value.as_object();
-        auto kind = obj.get("kind").as_string_or("LiteralString") == "LiteralString" ? Cell::LiteralString : Cell::Formula;
-
-        OwnPtr<Cell> cell;
-        switch (kind) {
-        case Cell::LiteralString:
-            cell = make<Cell>(obj.get("value").to_string(), position, *sheet);
-            break;
-        case Cell::Formula: {
-            auto& interpreter = sheet->interpreter();
-            auto value = interpreter.vm().call(parse_function, json, JS::js_string(interpreter.heap(), obj.get("value").as_string()));
-            cell = make<Cell>(obj.get("source").to_string(), move(value), position, *sheet);
-            break;
-        }
-        }
-
-        auto type_name = obj.get_or("type", "Numeric").to_string();
-        cell->set_type(type_name);
-
-        auto type_meta = obj.get("type_metadata");
-        if (type_meta.is_object()) {
-            auto& meta_obj = type_meta.as_object();
-            auto meta = cell->type_metadata();
-            if (auto value = meta_obj.get("length"); value.is_number())
-                meta.length = value.to_i32();
-            if (auto value = meta_obj.get("format"); value.is_string())
-                meta.format = value.as_string();
-            read_format(meta.static_format, meta_obj);
-
-            cell->set_type_metadata(move(meta));
-        }
-
-        auto conditional_formats = obj.get("conditional_formats");
-        auto cformats = cell->conditional_formats();
-        if (conditional_formats.is_array()) {
-            conditional_formats.as_array().for_each([&](const auto& fmt_val) {
-                if (!fmt_val.is_object())
-                    return IterationDecision::Continue;
-
-                auto& fmt_obj = fmt_val.as_object();
-                auto fmt_cond = fmt_obj.get("condition").to_string();
-                if (fmt_cond.is_empty())
-                    return IterationDecision::Continue;
-
-                ConditionalFormat fmt;
-                fmt.condition = move(fmt_cond);
-                read_format(fmt, fmt_obj);
-                cformats.append(move(fmt));
-
-                return IterationDecision::Continue;
-            });
-            cell->set_conditional_formats(move(cformats));
-        }
-
-        auto evaluated_format = obj.get("evaluated_formats");
-        if (evaluated_format.is_object()) {
-            auto& evaluated_format_obj = evaluated_format.as_object();
-            auto& evaluated_fmts = cell->evaluated_formats();
-
-            read_format(evaluated_fmts, evaluated_format_obj);
-        }
-
-        sheet->m_cells.set(position, cell.release_nonnull());
-        return IterationDecision::Continue;
-    });
-
-    return sheet;
-}
-
-Position Sheet::written_data_bounds() const
-{
-    Position bound;
-    for (auto& entry : m_cells) {
-        if (entry.key.row >= bound.row)
-            bound.row = entry.key.row;
-        if (entry.key.column >= bound.column)
-            bound.column = entry.key.column;
-    }
-
-    return bound;
-}
-
-/// The sheet is allowed to have nonstandard column names
-/// this checks whether all existing columns are 'standard'
-/// (i.e. as generated by 'convert_to_string()'
-bool Sheet::columns_are_standard() const
-{
-    for (size_t i = 0; i < m_columns.size(); ++i) {
-        if (m_columns[i] != convert_to_string(i))
-            return false;
-    }
-
-    return true;
-}
-
-JsonObject Sheet::to_json() const
-{
-    JsonObject object;
-    object.set("name", m_name);
-
-    auto save_format = [](const auto& format, auto& obj) {
-        if (format.foreground_color.has_value())
-            obj.set("foreground_color", format.foreground_color.value().to_string());
-        if (format.background_color.has_value())
-            obj.set("background_color", format.background_color.value().to_string());
-    };
-
-    auto bottom_right = written_data_bounds();
-
-    if (!columns_are_standard()) {
-        auto columns = JsonArray();
-        for (auto& column : m_columns)
-            columns.append(column);
-        object.set("columns", move(columns));
-    }
-    object.set("rows", bottom_right.row + 1);
-
-    JsonObject cells;
-    for (auto& it : m_cells) {
-        StringBuilder builder;
-        builder.append(it.key.column);
-        builder.appendff("{}", it.key.row);
-        auto key = builder.to_string();
-
-        JsonObject data;
-        data.set("kind", it.value->kind() == Cell::Kind::Formula ? "Formula" : "LiteralString");
-        if (it.value->kind() == Cell::Formula) {
-            data.set("source", it.value->data());
-            auto json = interpreter().global_object().get("JSON");
-            auto stringified = interpreter().vm().call(json.as_object().get("stringify").as_function(), json, it.value->evaluated_data());
-            data.set("value", stringified.to_string_without_side_effects());
-        } else {
-            data.set("value", it.value->data());
-        }
-
-        // Set type & meta
-        auto& type = it.value->type();
-        auto& meta = it.value->type_metadata();
-        data.set("type", type.name());
-
-        JsonObject metadata_object;
-        metadata_object.set("length", meta.length);
-        metadata_object.set("format", meta.format);
-#if 0
-        metadata_object.set("alignment", alignment_to_string(meta.alignment));
-#endif
-        save_format(meta.static_format, metadata_object);
-
-        data.set("type_metadata", move(metadata_object));
-
-        // Set conditional formats
-        JsonArray conditional_formats;
-        for (auto& fmt : it.value->conditional_formats()) {
-            JsonObject fmt_object;
-            fmt_object.set("condition", fmt.condition);
-            save_format(fmt, fmt_object);
-
-            conditional_formats.append(move(fmt_object));
-        }
-
-        data.set("conditional_formats", move(conditional_formats));
-
-        auto& evaluated_formats = it.value->evaluated_formats();
-        JsonObject evaluated_formats_obj;
-
-        save_format(evaluated_formats, evaluated_formats_obj);
-        data.set("evaluated_formats", move(evaluated_formats_obj));
-
-        cells.set(key, move(data));
-    }
-    object.set("cells", move(cells));
-
-    return object;
-}
-
-Vector<Vector<String>> Sheet::to_xsv() const
-{
-    Vector<Vector<String>> data;
-
-    auto bottom_right = written_data_bounds();
-
-    // First row = headers.
-    size_t column_count = m_columns.size();
-    if (columns_are_standard()) {
-        column_count = convert_from_string(bottom_right.column) + 1;
-        Vector<String> cols;
-        for (size_t i = 0; i < column_count; ++i)
-            cols.append(m_columns[i]);
-        data.append(move(cols));
-    } else {
-        data.append(m_columns);
-    }
-
-    for (size_t i = 0; i <= bottom_right.row; ++i) {
-        Vector<String> row;
-        row.resize(column_count);
-        for (size_t j = 0; j < column_count; ++j) {
-            auto cell = at({ m_columns[j], i });
-            if (cell)
-                row[j] = cell->typed_display();
-        }
-
-        data.append(move(row));
-    }
-
-    return data;
-}
-
-RefPtr<Sheet> Sheet::from_xsv(const Reader::XSV& xsv, Workbook& workbook)
-{
-    auto cols = xsv.headers();
-    auto rows = xsv.size();
-
-    auto sheet = adopt(*new Sheet(workbook));
-    sheet->m_columns = cols;
-    for (size_t i = 0; i < max(rows, Sheet::default_row_count); ++i)
-        sheet->add_row();
-    if (sheet->columns_are_standard()) {
-        for (size_t i = sheet->m_columns.size(); i < Sheet::default_column_count; ++i)
-            sheet->add_column();
-    }
-
-    for (auto row : xsv) {
-        for (size_t i = 0; i < cols.size(); ++i) {
-            auto str = row[i];
-            if (str.is_empty())
-                continue;
-            Position position { cols[i], row.index() };
-            auto cell = make<Cell>(str, position, *sheet);
-            sheet->m_cells.set(position, move(cell));
-        }
-    }
-
-    return sheet;
-}
-
-JsonObject Sheet::gather_documentation() const
-{
-    JsonObject object;
-    const JS::PropertyName doc_name { "__documentation" };
-
-    auto add_docs_from = [&](auto& it, auto& global_object) {
-        auto value = global_object.get(it.key);
-        if (!value.is_function() && !value.is_object())
-            return;
-
-        auto& value_object = value.is_object() ? value.as_object() : value.as_function();
-        if (!value_object.has_own_property(doc_name))
-            return;
-
-        dbgln("Found '{}'", it.key.to_display_string());
-        auto doc = value_object.get(doc_name);
-        if (!doc.is_string())
-            return;
-
-        JsonParser parser(doc.to_string_without_side_effects());
-        auto doc_object = parser.parse();
-
-        if (doc_object.has_value())
-            object.set(it.key.to_display_string(), doc_object.value());
-        else
-            dbgln("Sheet::gather_documentation(): Failed to parse the documentation for '{}'!", it.key.to_display_string());
-    };
-
-    for (auto& it : interpreter().global_object().shape().property_table())
-        add_docs_from(it, interpreter().global_object());
-
-    for (auto& it : global_object().shape().property_table())
-        add_docs_from(it, global_object());
-
-    m_cached_documentation = move(object);
-    return m_cached_documentation.value();
-}
-
-String Sheet::generate_inline_documentation_for(StringView function, size_t argument_index)
-{
-    if (!m_cached_documentation.has_value())
-        gather_documentation();
-
-    auto& docs = m_cached_documentation.value();
-    auto entry = docs.get(function);
-    if (entry.is_null() || !entry.is_object())
-        return String::formatted("{}(...???{})", function, argument_index);
-
-    auto& entry_object = entry.as_object();
-    size_t argc = entry_object.get("argc").to_int(0);
-    auto argnames_value = entry_object.get("argnames");
-    if (!argnames_value.is_array())
-        return String::formatted("{}(...{}???{})", function, argc, argument_index);
-    auto& argnames = argnames_value.as_array();
-    StringBuilder builder;
-    builder.appendff("{}(", function);
-    for (size_t i = 0; i < (size_t)argnames.size(); ++i) {
-        if (i != 0 && i < (size_t)argnames.size())
-            builder.append(", ");
-        if (i == argument_index)
-            builder.append('<');
-        else if (i >= argc)
-            builder.append('[');
-        builder.append(argnames[i].to_string());
-        if (i == argument_index)
-            builder.append('>');
-        else if (i >= argc)
-            builder.append(']');
-    }
-
-    builder.append(')');
-    return builder.build();
-}
-
-}
diff --git a/Applications/Spreadsheet/Spreadsheet.h b/Applications/Spreadsheet/Spreadsheet.h
deleted file mode 100644
index bbef6c8116..0000000000
--- a/Applications/Spreadsheet/Spreadsheet.h
+++ /dev/null
@@ -1,188 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Cell.h"
-#include "Forward.h"
-#include "Readers/XSV.h"
-#include <AK/HashMap.h>
-#include <AK/HashTable.h>
-#include <AK/String.h>
-#include <AK/StringBuilder.h>
-#include <AK/Traits.h>
-#include <AK/Types.h>
-#include <AK/WeakPtr.h>
-#include <AK/Weakable.h>
-#include <LibCore/Object.h>
-#include <LibJS/Interpreter.h>
-
-namespace Spreadsheet {
-
-class Sheet : public Core::Object {
-    C_OBJECT(Sheet);
-
-public:
-    constexpr static size_t default_row_count = 100;
-    constexpr static size_t default_column_count = 26;
-
-    ~Sheet();
-
-    static Optional<Position> parse_cell_name(const StringView&);
-    Optional<size_t> column_index(const StringView& column_name) const;
-    Optional<String> column_arithmetic(const StringView& column_name, int offset);
-
-    Cell* from_url(const URL&);
-    const Cell* from_url(const URL& url) const { return const_cast<Sheet*>(this)->from_url(url); }
-    Optional<Position> position_from_url(const URL& url) const;
-
-    /// Resolve 'offset' to an absolute position assuming 'base' is at 'offset_base'.
-    /// Effectively, "Walk the distance between 'offset' and 'offset_base' away from 'base'".
-    Position offset_relative_to(const Position& base, const Position& offset, const Position& offset_base) const;
-
-    JsonObject to_json() const;
-    static RefPtr<Sheet> from_json(const JsonObject&, Workbook&);
-
-    Vector<Vector<String>> to_xsv() const;
-    static RefPtr<Sheet> from_xsv(const Reader::XSV&, Workbook&);
-
-    const String& name() const { return m_name; }
-    void set_name(const StringView& name) { m_name = name; }
-
-    JsonObject gather_documentation() const;
-
-    const HashTable<Position>& selected_cells() const { return m_selected_cells; }
-    HashTable<Position>& selected_cells() { return m_selected_cells; }
-    const HashMap<Position, NonnullOwnPtr<Cell>>& cells() const { return m_cells; }
-    HashMap<Position, NonnullOwnPtr<Cell>>& cells() { return m_cells; }
-
-    Cell* at(const Position& position);
-    const Cell* at(const Position& position) const { return const_cast<Sheet*>(this)->at(position); }
-
-    const Cell* at(const StringView& name) const { return const_cast<Sheet*>(this)->at(name); }
-    Cell* at(const StringView&);
-
-    const Cell& ensure(const Position& position) const { return const_cast<Sheet*>(this)->ensure(position); }
-    Cell& ensure(const Position& position)
-    {
-        if (auto cell = at(position))
-            return *cell;
-
-        m_cells.set(position, make<Cell>(String::empty(), position, *this));
-        return *at(position);
-    }
-
-    size_t add_row();
-    String add_column();
-
-    size_t row_count() const { return m_rows; }
-    size_t column_count() const { return m_columns.size(); }
-    const Vector<String>& columns() const { return m_columns; }
-    const String& column(size_t index)
-    {
-        for (size_t i = column_count(); i < index; ++i)
-            add_column();
-
-        ASSERT(column_count() > index);
-        return m_columns[index];
-    }
-    const String& column(size_t index) const
-    {
-        ASSERT(column_count() > index);
-        return m_columns[index];
-    }
-
-    void update();
-    void update(Cell&);
-    void disable_updates() { m_should_ignore_updates = true; }
-    void enable_updates()
-    {
-        m_should_ignore_updates = false;
-        if (m_update_requested) {
-            m_update_requested = false;
-            update();
-        }
-    }
-
-    struct ValueAndException {
-        JS::Value value;
-        JS::Exception* exception { nullptr };
-    };
-    ValueAndException evaluate(const StringView&, Cell* = nullptr);
-    JS::Interpreter& interpreter() const;
-    SheetGlobalObject& global_object() const { return *m_global_object; }
-
-    Cell*& current_evaluated_cell() { return m_current_cell_being_evaluated; }
-    bool has_been_visited(Cell* cell) const { return m_visited_cells_in_update.contains(cell); }
-
-    const Workbook& workbook() const { return m_workbook; }
-
-    void copy_cells(Vector<Position> from, Vector<Position> to, Optional<Position> resolve_relative_to = {});
-
-    /// Gives the bottom-right corner of the smallest bounding box containing all the written data.
-    Position written_data_bounds() const;
-
-    bool columns_are_standard() const;
-
-    String generate_inline_documentation_for(StringView function, size_t argument_index);
-
-private:
-    explicit Sheet(Workbook&);
-    explicit Sheet(const StringView& name, Workbook&);
-
-    String m_name;
-    Vector<String> m_columns;
-    size_t m_rows { 0 };
-    HashMap<Position, NonnullOwnPtr<Cell>> m_cells;
-    HashTable<Position> m_selected_cells;
-
-    Workbook& m_workbook;
-    mutable SheetGlobalObject* m_global_object;
-
-    Cell* m_current_cell_being_evaluated { nullptr };
-
-    HashTable<Cell*> m_visited_cells_in_update;
-    bool m_should_ignore_updates { false };
-    bool m_update_requested { false };
-    mutable Optional<JsonObject> m_cached_documentation;
-};
-
-}
-
-namespace AK {
-
-template<>
-struct Traits<Spreadsheet::Position> : public GenericTraits<Spreadsheet::Position> {
-    static constexpr bool is_trivial() { return false; }
-    static unsigned hash(const Spreadsheet::Position& p)
-    {
-        return pair_int_hash(
-            string_hash(p.column.characters(), p.column.length()),
-            u64_hash(p.row));
-    }
-};
-
-}
diff --git a/Applications/Spreadsheet/SpreadsheetModel.cpp b/Applications/Spreadsheet/SpreadsheetModel.cpp
deleted file mode 100644
index 70193e4b63..0000000000
--- a/Applications/Spreadsheet/SpreadsheetModel.cpp
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "SpreadsheetModel.h"
-#include "ConditionalFormatting.h"
-#include <AK/URL.h>
-#include <LibGUI/AbstractView.h>
-#include <LibJS/Runtime/Error.h>
-#include <LibJS/Runtime/Object.h>
-
-namespace Spreadsheet {
-
-SheetModel::~SheetModel()
-{
-}
-
-GUI::Variant SheetModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
-{
-    if (!index.is_valid())
-        return {};
-
-    if (role == GUI::ModelRole::Display) {
-        const auto* cell = m_sheet->at({ m_sheet->column(index.column()), (size_t)index.row() });
-        if (!cell)
-            return String::empty();
-
-        if (cell->kind() == Spreadsheet::Cell::Formula) {
-            if (auto exception = cell->exception()) {
-                StringBuilder builder;
-                builder.append("Error: ");
-                auto value = exception->value();
-                if (value.is_object()) {
-                    auto& object = value.as_object();
-                    if (is<JS::Error>(object)) {
-                        auto error = object.get("message").to_string_without_side_effects();
-                        builder.append(error);
-                        return builder.to_string();
-                    }
-                }
-                auto error = value.to_string(cell->sheet().global_object());
-                // This is annoying, but whatever.
-                cell->sheet().interpreter().vm().clear_exception();
-
-                builder.append(error);
-                return builder.to_string();
-            }
-        }
-
-        return cell->typed_display();
-    }
-
-    if (role == GUI::ModelRole::MimeData)
-        return Position { m_sheet->column(index.column()), (size_t)index.row() }.to_url().to_string();
-
-    if (role == GUI::ModelRole::TextAlignment) {
-        const auto* cell = m_sheet->at({ m_sheet->column(index.column()), (size_t)index.row() });
-        if (!cell)
-            return {};
-
-        return cell->type_metadata().alignment;
-    }
-
-    if (role == GUI::ModelRole::ForegroundColor) {
-        const auto* cell = m_sheet->at({ m_sheet->column(index.column()), (size_t)index.row() });
-        if (!cell)
-            return {};
-
-        if (cell->kind() == Spreadsheet::Cell::Formula) {
-            if (cell->exception())
-                return Color(Color::Red);
-        }
-
-        if (cell->evaluated_formats().foreground_color.has_value())
-            return cell->evaluated_formats().foreground_color.value();
-
-        if (auto color = cell->type_metadata().static_format.foreground_color; color.has_value())
-            return color.value();
-
-        return {};
-    }
-
-    if (role == GUI::ModelRole::BackgroundColor) {
-        const auto* cell = m_sheet->at({ m_sheet->column(index.column()), (size_t)index.row() });
-        if (!cell)
-            return {};
-
-        if (cell->evaluated_formats().background_color.has_value())
-            return cell->evaluated_formats().background_color.value();
-
-        if (auto color = cell->type_metadata().static_format.background_color; color.has_value())
-            return color.value();
-
-        return {};
-    }
-
-    return {};
-}
-
-RefPtr<Core::MimeData> SheetModel::mime_data(const GUI::ModelSelection& selection) const
-{
-    auto mime_data = GUI::Model::mime_data(selection);
-
-    bool first = true;
-    const GUI::ModelIndex* cursor = nullptr;
-    const_cast<SheetModel*>(this)->for_each_view([&](const GUI::AbstractView& view) {
-        if (!first)
-            return;
-        cursor = &view.cursor_index();
-        first = false;
-    });
-
-    ASSERT(cursor);
-
-    Position cursor_position { m_sheet->column(cursor->column()), (size_t)cursor->row() };
-    auto new_data = String::formatted("{}\n{}",
-        cursor_position.to_url().to_string(),
-        StringView(mime_data->data("text/x-spreadsheet-data")));
-    mime_data->set_data("text/x-spreadsheet-data", new_data.to_byte_buffer());
-
-    return mime_data;
-}
-
-String SheetModel::column_name(int index) const
-{
-    if (index < 0)
-        return {};
-
-    return m_sheet->column(index);
-}
-
-bool SheetModel::is_editable(const GUI::ModelIndex& index) const
-{
-    if (!index.is_valid())
-        return false;
-
-    return true;
-}
-
-void SheetModel::set_data(const GUI::ModelIndex& index, const GUI::Variant& value)
-{
-    if (!index.is_valid())
-        return;
-
-    auto& cell = m_sheet->ensure({ m_sheet->column(index.column()), (size_t)index.row() });
-    cell.set_data(value.to_string());
-    update();
-}
-
-void SheetModel::update()
-{
-    m_sheet->update();
-    did_update(UpdateFlag::DontInvalidateIndexes);
-}
-
-}
diff --git a/Applications/Spreadsheet/SpreadsheetModel.h b/Applications/Spreadsheet/SpreadsheetModel.h
deleted file mode 100644
index 14527d4c37..0000000000
--- a/Applications/Spreadsheet/SpreadsheetModel.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Spreadsheet.h"
-#include <LibGUI/Model.h>
-
-namespace Spreadsheet {
-
-class SheetModel final : public GUI::Model {
-public:
-    static NonnullRefPtr<SheetModel> create(Sheet& sheet) { return adopt(*new SheetModel(sheet)); }
-    virtual ~SheetModel() override;
-
-    virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return m_sheet->row_count(); }
-    virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return m_sheet->column_count(); }
-    virtual String column_name(int) const override;
-    virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
-    virtual RefPtr<Core::MimeData> mime_data(const GUI::ModelSelection&) const override;
-    virtual bool is_editable(const GUI::ModelIndex&) const override;
-    virtual void set_data(const GUI::ModelIndex&, const GUI::Variant&) override;
-    virtual void update() override;
-    virtual bool is_column_sortable(int) const override { return false; }
-    virtual StringView drag_data_type() const override { return "text/x-spreadsheet-data"; }
-    Sheet& sheet() { return *m_sheet; }
-
-private:
-    explicit SheetModel(Sheet& sheet)
-        : m_sheet(sheet)
-    {
-    }
-
-    NonnullRefPtr<Sheet> m_sheet;
-};
-
-}
diff --git a/Applications/Spreadsheet/SpreadsheetView.cpp b/Applications/Spreadsheet/SpreadsheetView.cpp
deleted file mode 100644
index 9762f77578..0000000000
--- a/Applications/Spreadsheet/SpreadsheetView.cpp
+++ /dev/null
@@ -1,334 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "SpreadsheetView.h"
-#include "CellTypeDialog.h"
-#include "SpreadsheetModel.h"
-#include <AK/ScopeGuard.h>
-#include <AK/URL.h>
-#include <LibCore/MimeData.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/HeaderView.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/ModelEditingDelegate.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/ScrollBar.h>
-#include <LibGUI/TableView.h>
-#include <LibGfx/Palette.h>
-
-namespace Spreadsheet {
-
-SpreadsheetView::~SpreadsheetView()
-{
-}
-
-void SpreadsheetView::EditingDelegate::set_value(const GUI::Variant& value)
-{
-    if (value.as_string().is_null()) {
-        StringModelEditingDelegate::set_value("");
-        commit();
-        return;
-    }
-
-    if (m_has_set_initial_value)
-        return StringModelEditingDelegate::set_value(value);
-
-    m_has_set_initial_value = true;
-    const auto option = m_sheet.at({ m_sheet.column(index().column()), (size_t)index().row() });
-    if (option)
-        return StringModelEditingDelegate::set_value(option->source());
-
-    StringModelEditingDelegate::set_value("");
-}
-
-void InfinitelyScrollableTableView::did_scroll()
-{
-    TableView::did_scroll();
-    auto& vscrollbar = vertical_scrollbar();
-    auto& hscrollbar = horizontal_scrollbar();
-    if (vscrollbar.is_visible() && vscrollbar.value() == vscrollbar.max()) {
-        if (on_reaching_vertical_end)
-            on_reaching_vertical_end();
-    }
-    if (hscrollbar.is_visible() && hscrollbar.value() == hscrollbar.max()) {
-        if (on_reaching_horizontal_end)
-            on_reaching_horizontal_end();
-    }
-}
-
-void InfinitelyScrollableTableView::mousemove_event(GUI::MouseEvent& event)
-{
-    if (auto model = this->model()) {
-        auto index = index_at_event_position(event.position());
-        if (!index.is_valid())
-            return TableView::mousemove_event(event);
-
-        auto& sheet = static_cast<SheetModel&>(*model).sheet();
-        sheet.disable_updates();
-        ScopeGuard sheet_update_enabler { [&] { sheet.enable_updates(); } };
-
-        auto holding_left_button = !!(event.buttons() & GUI::MouseButton::Left);
-        auto rect = content_rect(index);
-        auto distance = rect.center().absolute_relative_distance_to(event.position());
-        if (distance.x() >= rect.width() / 2 - 5 && distance.y() >= rect.height() / 2 - 5) {
-            set_override_cursor(Gfx::StandardCursor::Crosshair);
-            m_should_intercept_drag = false;
-            if (holding_left_button) {
-                m_has_committed_to_dragging = true;
-                // Force a drag to happen by moving the mousedown position to the center of the cell.
-                m_left_mousedown_position = rect.center();
-            }
-        } else if (!m_should_intercept_drag) {
-            set_override_cursor(Gfx::StandardCursor::Arrow);
-            if (!holding_left_button) {
-                m_starting_selection_index = index;
-            } else {
-                m_should_intercept_drag = true;
-                m_might_drag = false;
-            }
-        }
-
-        if (holding_left_button && m_should_intercept_drag && !m_has_committed_to_dragging) {
-            if (!m_starting_selection_index.is_valid())
-                m_starting_selection_index = index;
-
-            Vector<GUI::ModelIndex> new_selection;
-            for (auto i = min(m_starting_selection_index.row(), index.row()), imax = max(m_starting_selection_index.row(), index.row()); i <= imax; ++i) {
-                for (auto j = min(m_starting_selection_index.column(), index.column()), jmax = max(m_starting_selection_index.column(), index.column()); j <= jmax; ++j) {
-                    auto index = model->index(i, j);
-                    if (index.is_valid())
-                        new_selection.append(move(index));
-                }
-            }
-
-            if (!event.ctrl())
-                selection().clear();
-            selection().add_all(new_selection);
-        }
-    }
-
-    TableView::mousemove_event(event);
-}
-
-void InfinitelyScrollableTableView::mouseup_event(GUI::MouseEvent& event)
-{
-    m_should_intercept_drag = false;
-    m_has_committed_to_dragging = false;
-    TableView::mouseup_event(event);
-}
-
-void SpreadsheetView::update_with_model()
-{
-    m_table_view->model()->update();
-    m_table_view->update();
-}
-
-SpreadsheetView::SpreadsheetView(Sheet& sheet)
-    : m_sheet(sheet)
-{
-    set_layout<GUI::VerticalBoxLayout>().set_margins({ 2, 2, 2, 2 });
-    m_table_view = add<InfinitelyScrollableTableView>();
-    m_table_view->set_grid_style(GUI::TableView::GridStyle::Both);
-    m_table_view->set_selection_behavior(GUI::AbstractView::SelectionBehavior::SelectItems);
-    m_table_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed | GUI::AbstractView::AnyKeyPressed | GUI::AbstractView::DoubleClicked);
-    m_table_view->set_tab_key_navigation_enabled(true);
-    m_table_view->row_header().set_visible(true);
-    m_table_view->set_model(SheetModel::create(*m_sheet));
-    m_table_view->on_reaching_vertical_end = [&]() {
-        for (size_t i = 0; i < 100; ++i) {
-            auto index = m_sheet->add_row();
-            m_table_view->set_column_painting_delegate(index, make<TableCellPainter>(*m_table_view));
-        };
-        update_with_model();
-    };
-    m_table_view->on_reaching_horizontal_end = [&]() {
-        for (size_t i = 0; i < 10; ++i) {
-            m_sheet->add_column();
-            auto last_column_index = m_sheet->column_count() - 1;
-            m_table_view->set_column_width(last_column_index, 50);
-            m_table_view->set_column_header_alignment(last_column_index, Gfx::TextAlignment::Center);
-        }
-        update_with_model();
-    };
-
-    set_focus_proxy(m_table_view);
-
-    // FIXME: This is dumb.
-    for (size_t i = 0; i < m_sheet->column_count(); ++i) {
-        m_table_view->set_column_painting_delegate(i, make<TableCellPainter>(*m_table_view));
-        m_table_view->set_column_width(i, 50);
-        m_table_view->set_column_header_alignment(i, Gfx::TextAlignment::Center);
-    }
-
-    m_table_view->set_alternating_row_colors(false);
-    m_table_view->set_highlight_selected_rows(false);
-    m_table_view->set_editable(true);
-    m_table_view->aid_create_editing_delegate = [this](auto&) {
-        auto delegate = make<EditingDelegate>(*m_sheet);
-        delegate->on_cursor_key_pressed = [this](auto& event) {
-            m_table_view->stop_editing();
-            m_table_view->event(event);
-        };
-        return delegate;
-    };
-
-    m_table_view->on_selection_change = [&] {
-        m_sheet->selected_cells().clear();
-        for (auto& index : m_table_view->selection().indexes()) {
-            Position position { m_sheet->column(index.column()), (size_t)index.row() };
-            m_sheet->selected_cells().set(position);
-        }
-
-        if (m_table_view->selection().is_empty() && on_selection_dropped)
-            return on_selection_dropped();
-
-        Vector<Position> selected_positions;
-        selected_positions.ensure_capacity(m_table_view->selection().size());
-        for (auto& selection : m_table_view->selection().indexes())
-            selected_positions.empend(m_sheet->column(selection.column()), (size_t)selection.row());
-
-        if (on_selection_changed) {
-            on_selection_changed(move(selected_positions));
-            update_with_model();
-        };
-    };
-
-    m_table_view->on_activation = [this](auto&) {
-        m_table_view->move_cursor(GUI::AbstractView::CursorMovement::Down, GUI::AbstractView::SelectionUpdate::Set);
-    };
-
-    m_table_view->on_context_menu_request = [&](const GUI::ModelIndex&, const GUI::ContextMenuEvent& event) {
-        // NOTE: We ignore the specific cell for now.
-        m_cell_range_context_menu->popup(event.screen_position());
-    };
-
-    m_cell_range_context_menu = GUI::Menu::construct();
-    m_cell_range_context_menu->add_action(GUI::Action::create("Type and Formatting...", [this](auto&) {
-        Vector<Position> positions;
-        for (auto& index : m_table_view->selection().indexes()) {
-            Position position { m_sheet->column(index.column()), (size_t)index.row() };
-            positions.append(move(position));
-        }
-
-        if (positions.is_empty()) {
-            auto& index = m_table_view->cursor_index();
-            Position position { m_sheet->column(index.column()), (size_t)index.row() };
-            positions.append(move(position));
-        }
-
-        auto dialog = CellTypeDialog::construct(positions, *m_sheet, window());
-        if (dialog->exec() == GUI::Dialog::ExecOK) {
-            for (auto& position : positions) {
-                auto& cell = m_sheet->ensure(position);
-                cell.set_type(dialog->type());
-                cell.set_type_metadata(dialog->metadata());
-                cell.set_conditional_formats(dialog->conditional_formats());
-            }
-
-            m_table_view->update();
-        }
-    }));
-
-    m_table_view->on_drop = [&](const GUI::ModelIndex& index, const GUI::DropEvent& event) {
-        if (!index.is_valid())
-            return;
-
-        ScopeGuard update_after_drop { [this] { update(); } };
-
-        if (event.mime_data().has_format("text/x-spreadsheet-data")) {
-            auto data = event.mime_data().data("text/x-spreadsheet-data");
-            StringView urls { data.data(), data.size() };
-            Vector<Position> source_positions, target_positions;
-
-            for (auto& line : urls.lines(false)) {
-                auto position = m_sheet->position_from_url(line);
-                if (position.has_value())
-                    source_positions.append(position.release_value());
-            }
-
-            // Drop always has a single target.
-            Position target { m_sheet->column(index.column()), (size_t)index.row() };
-            target_positions.append(move(target));
-
-            if (source_positions.is_empty())
-                return;
-
-            auto first_position = source_positions.take_first();
-            m_sheet->copy_cells(move(source_positions), move(target_positions), first_position);
-
-            return;
-        }
-
-        if (event.mime_data().has_text()) {
-            auto* target_cell = m_sheet->at({ m_sheet->column(index.column()), (size_t)index.row() });
-            ASSERT(target_cell);
-
-            target_cell->set_data(event.text());
-            return;
-        }
-    };
-}
-
-void SpreadsheetView::hide_event(GUI::HideEvent&)
-{
-    if (on_selection_dropped)
-        on_selection_dropped();
-}
-
-void SpreadsheetView::show_event(GUI::ShowEvent&)
-{
-    if (on_selection_changed && !m_table_view->selection().is_empty()) {
-        Vector<Position> selected_positions;
-        selected_positions.ensure_capacity(m_table_view->selection().size());
-        for (auto& selection : m_table_view->selection().indexes())
-            selected_positions.empend(m_sheet->column(selection.column()), (size_t)selection.row());
-
-        on_selection_changed(move(selected_positions));
-    }
-}
-
-void SpreadsheetView::TableCellPainter::paint(GUI::Painter& painter, const Gfx::IntRect& rect, const Gfx::Palette& palette, const GUI::ModelIndex& index)
-{
-    // Draw a border.
-    // Undo the horizontal padding done by the table view...
-    auto cell_rect = rect.inflated(m_table_view.horizontal_padding() * 2, 0);
-
-    if (auto bg = index.data(GUI::ModelRole::BackgroundColor); bg.is_color())
-        painter.fill_rect(cell_rect, bg.as_color());
-
-    if (m_table_view.selection().contains(index)) {
-        Color fill_color = palette.selection();
-        fill_color.set_alpha(80);
-        painter.fill_rect(cell_rect, fill_color);
-    }
-
-    auto text_color = index.data(GUI::ModelRole::ForegroundColor).to_color(palette.color(m_table_view.foreground_role()));
-    auto data = index.data();
-    auto text_alignment = index.data(GUI::ModelRole::TextAlignment).to_text_alignment(Gfx::TextAlignment::CenterRight);
-    painter.draw_text(rect, data.to_string(), m_table_view.font_for_index(index), text_alignment, text_color, Gfx::TextElision::Right);
-}
-
-}
diff --git a/Applications/Spreadsheet/SpreadsheetView.h b/Applications/Spreadsheet/SpreadsheetView.h
deleted file mode 100644
index bc07d31bc3..0000000000
--- a/Applications/Spreadsheet/SpreadsheetView.h
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Spreadsheet.h"
-#include <LibGUI/AbstractTableView.h>
-#include <LibGUI/ModelEditingDelegate.h>
-#include <LibGUI/TableView.h>
-#include <LibGUI/Widget.h>
-#include <string.h>
-
-namespace Spreadsheet {
-
-class CellEditor final : public GUI::TextEditor {
-    C_OBJECT(CellEditor);
-
-public:
-    virtual ~CellEditor() { }
-
-    Function<void(GUI::KeyEvent&)> on_cursor_key_pressed;
-
-private:
-    CellEditor()
-        : TextEditor(TextEditor::Type::SingleLine)
-    {
-    }
-
-    static bool is_navigation(const GUI::KeyEvent& event)
-    {
-        if (event.modifiers() == KeyModifier::Mod_Shift && event.key() == KeyCode::Key_Tab)
-            return true;
-
-        if (event.modifiers())
-            return false;
-
-        switch (event.key()) {
-        case KeyCode::Key_Tab:
-        case KeyCode::Key_Left:
-        case KeyCode::Key_Right:
-        case KeyCode::Key_Up:
-        case KeyCode::Key_Down:
-        case KeyCode::Key_Return:
-            return true;
-        default:
-            return false;
-        }
-    }
-
-    virtual void keydown_event(GUI::KeyEvent& event) override
-    {
-        if (is_navigation(event))
-            on_cursor_key_pressed(event);
-        else
-            TextEditor::keydown_event(event);
-    }
-};
-
-class InfinitelyScrollableTableView : public GUI::TableView {
-    C_OBJECT(InfinitelyScrollableTableView)
-public:
-    Function<void()> on_reaching_vertical_end;
-    Function<void()> on_reaching_horizontal_end;
-
-private:
-    virtual void did_scroll() override;
-    virtual void mousemove_event(GUI::MouseEvent&) override;
-    virtual void mouseup_event(GUI::MouseEvent&) override;
-
-    bool m_should_intercept_drag { false };
-    bool m_has_committed_to_dragging { false };
-    GUI::ModelIndex m_starting_selection_index;
-};
-
-class SpreadsheetView final : public GUI::Widget {
-    C_OBJECT(SpreadsheetView);
-
-public:
-    ~SpreadsheetView();
-
-    const Sheet& sheet() const { return *m_sheet; }
-    Sheet& sheet() { return *m_sheet; }
-
-    const GUI::ModelIndex* cursor() const
-    {
-        return &m_table_view->cursor_index();
-    }
-
-    Function<void(Vector<Position>&&)> on_selection_changed;
-    Function<void()> on_selection_dropped;
-
-private:
-    virtual void hide_event(GUI::HideEvent&) override;
-    virtual void show_event(GUI::ShowEvent&) override;
-
-    void update_with_model();
-
-    SpreadsheetView(Sheet&);
-
-    class EditingDelegate final : public GUI::StringModelEditingDelegate {
-    public:
-        EditingDelegate(const Sheet& sheet)
-            : m_sheet(sheet)
-        {
-        }
-        virtual void set_value(const GUI::Variant& value) override;
-
-        virtual RefPtr<Widget> create_widget() override
-        {
-            auto textbox = CellEditor::construct();
-            textbox->on_escape_pressed = [this] {
-                rollback();
-            };
-            textbox->on_cursor_key_pressed = [this](auto& event) {
-                commit();
-                on_cursor_key_pressed(event);
-            };
-            return textbox;
-        }
-
-        Function<void(GUI::KeyEvent&)> on_cursor_key_pressed;
-
-    private:
-        bool m_has_set_initial_value { false };
-        const Sheet& m_sheet;
-    };
-
-    class TableCellPainter final : public GUI::TableCellPaintingDelegate {
-    public:
-        TableCellPainter(const GUI::TableView& view)
-            : m_table_view(view)
-        {
-        }
-        void paint(GUI::Painter&, const Gfx::IntRect&, const Gfx::Palette&, const GUI::ModelIndex&) override;
-
-    private:
-        const GUI::TableView& m_table_view;
-    };
-
-    NonnullRefPtr<Sheet> m_sheet;
-    RefPtr<InfinitelyScrollableTableView> m_table_view;
-    RefPtr<GUI::Menu> m_cell_range_context_menu;
-};
-
-}
diff --git a/Applications/Spreadsheet/SpreadsheetWidget.cpp b/Applications/Spreadsheet/SpreadsheetWidget.cpp
deleted file mode 100644
index 65e48e3f12..0000000000
--- a/Applications/Spreadsheet/SpreadsheetWidget.cpp
+++ /dev/null
@@ -1,347 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "SpreadsheetWidget.h"
-#include "CellSyntaxHighlighter.h"
-#include "HelpWindow.h"
-#include "LibGUI/InputBox.h"
-#include <LibCore/File.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/Splitter.h>
-#include <LibGUI/TabWidget.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGfx/FontDatabase.h>
-#include <string.h>
-
-namespace Spreadsheet {
-
-SpreadsheetWidget::SpreadsheetWidget(NonnullRefPtrVector<Sheet>&& sheets, bool should_add_sheet_if_empty)
-    : m_workbook(make<Workbook>(move(sheets)))
-{
-    set_fill_with_background_color(true);
-    set_layout<GUI::VerticalBoxLayout>().set_margins({ 2, 2, 2, 2 });
-    auto& container = add<GUI::VerticalSplitter>();
-
-    auto& top_bar = container.add<GUI::Frame>();
-    top_bar.set_layout<GUI::HorizontalBoxLayout>().set_spacing(1);
-    top_bar.set_fixed_height(26);
-    auto& current_cell_label = top_bar.add<GUI::Label>("");
-    current_cell_label.set_fixed_width(50);
-
-    auto& help_button = top_bar.add<GUI::Button>("🛈");
-    help_button.set_fixed_size(20, 20);
-    help_button.on_click = [&](auto) {
-        auto docs = m_selected_view->sheet().gather_documentation();
-        auto help_window = HelpWindow::the(window());
-        help_window->set_docs(move(docs));
-        help_window->show();
-    };
-
-    auto& cell_value_editor = top_bar.add<GUI::TextEditor>(GUI::TextEditor::Type::SingleLine);
-    cell_value_editor.set_font(Gfx::FontDatabase::default_fixed_width_font());
-    cell_value_editor.set_scrollbars_enabled(false);
-
-    cell_value_editor.set_syntax_highlighter(make<CellSyntaxHighlighter>());
-    cell_value_editor.set_enabled(false);
-    current_cell_label.set_enabled(false);
-
-    m_tab_widget = container.add<GUI::TabWidget>();
-    m_tab_widget->set_tab_position(GUI::TabWidget::TabPosition::Bottom);
-
-    m_cell_value_editor = cell_value_editor;
-    m_current_cell_label = current_cell_label;
-    m_inline_documentation_window = GUI::Window::construct(window());
-    m_inline_documentation_window->set_rect(m_cell_value_editor->rect().translated(0, m_cell_value_editor->height() + 7).inflated(6, 6));
-    m_inline_documentation_window->set_window_type(GUI::WindowType::Tooltip);
-    m_inline_documentation_window->set_resizable(false);
-    auto& inline_widget = m_inline_documentation_window->set_main_widget<GUI::Frame>();
-    inline_widget.set_fill_with_background_color(true);
-    inline_widget.set_layout<GUI::VerticalBoxLayout>().set_margins({ 4, 4, 4, 4 });
-    inline_widget.set_frame_shape(Gfx::FrameShape::Box);
-    m_inline_documentation_label = inline_widget.add<GUI::Label>();
-    m_inline_documentation_label->set_fill_with_background_color(true);
-    m_inline_documentation_label->set_autosize(false);
-    m_inline_documentation_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
-
-    if (!m_workbook->has_sheets() && should_add_sheet_if_empty)
-        m_workbook->add_sheet("Sheet 1");
-
-    m_tab_context_menu = GUI::Menu::construct();
-    auto rename_action = GUI::Action::create("Rename...", [this](auto&) {
-        ASSERT(m_tab_context_menu_sheet_view);
-
-        auto& sheet = m_tab_context_menu_sheet_view->sheet();
-        String new_name;
-        if (GUI::InputBox::show(new_name, window(), String::formatted("New name for '{}'", sheet.name()), "Rename sheet") == GUI::Dialog::ExecOK) {
-            sheet.set_name(new_name);
-            sheet.update();
-            m_tab_widget->set_tab_title(static_cast<GUI::Widget&>(*m_tab_context_menu_sheet_view), new_name);
-        }
-    });
-    m_tab_context_menu->add_action(rename_action);
-    m_tab_context_menu->add_action(GUI::Action::create("Add new sheet...", [this](auto&) {
-        String name;
-        if (GUI::InputBox::show(name, window(), "Name for new sheet", "Create sheet") == GUI::Dialog::ExecOK) {
-            NonnullRefPtrVector<Sheet> new_sheets;
-            new_sheets.append(m_workbook->add_sheet(name));
-            setup_tabs(move(new_sheets));
-        }
-    }));
-
-    setup_tabs(m_workbook->sheets());
-}
-
-void SpreadsheetWidget::resize_event(GUI::ResizeEvent& event)
-{
-    GUI::Widget::resize_event(event);
-    if (m_inline_documentation_window && m_cell_value_editor && window())
-        m_inline_documentation_window->set_rect(m_cell_value_editor->screen_relative_rect().translated(0, m_cell_value_editor->height() + 7).inflated(6, 6));
-}
-
-void SpreadsheetWidget::setup_tabs(NonnullRefPtrVector<Sheet> new_sheets)
-{
-    RefPtr<GUI::Widget> first_tab_widget;
-    for (auto& sheet : new_sheets) {
-        auto& tab = m_tab_widget->add_tab<SpreadsheetView>(sheet.name(), sheet);
-        if (!first_tab_widget)
-            first_tab_widget = &tab;
-    }
-
-    auto change = [&](auto& selected_widget) {
-        if (m_selected_view) {
-            m_selected_view->on_selection_changed = nullptr;
-            m_selected_view->on_selection_dropped = nullptr;
-        };
-        m_selected_view = &static_cast<SpreadsheetView&>(selected_widget);
-        m_selected_view->on_selection_changed = [&](Vector<Position>&& selection) {
-            if (selection.is_empty()) {
-                m_current_cell_label->set_enabled(false);
-                m_current_cell_label->set_text({});
-                m_cell_value_editor->on_change = nullptr;
-                m_cell_value_editor->on_focusin = nullptr;
-                m_cell_value_editor->on_focusout = nullptr;
-                m_cell_value_editor->set_text("");
-                m_cell_value_editor->set_enabled(false);
-                return;
-            }
-
-            if (selection.size() == 1) {
-                auto& position = selection.first();
-                StringBuilder builder;
-                builder.append(position.column);
-                builder.appendff("{}", position.row);
-                m_current_cell_label->set_enabled(true);
-                m_current_cell_label->set_text(builder.string_view());
-
-                auto& cell = m_selected_view->sheet().ensure(position);
-                m_cell_value_editor->on_change = nullptr;
-                m_cell_value_editor->set_text(cell.source());
-                m_cell_value_editor->on_change = [&] {
-                    auto text = m_cell_value_editor->text();
-                    // FIXME: Lines?
-                    auto offset = m_cell_value_editor->cursor().column();
-                    try_generate_tip_for_input_expression(text, offset);
-                    cell.set_data(move(text));
-                    m_selected_view->sheet().update();
-                    update();
-                };
-                m_cell_value_editor->set_enabled(true);
-                static_cast<CellSyntaxHighlighter*>(const_cast<GUI::SyntaxHighlighter*>(m_cell_value_editor->syntax_highlighter()))->set_cell(&cell);
-                return;
-            }
-
-            // There are many cells selected, change all of them.
-            StringBuilder builder;
-            builder.appendff("<{}>", selection.size());
-            m_current_cell_label->set_enabled(true);
-            m_current_cell_label->set_text(builder.string_view());
-
-            Vector<Cell*> cells;
-            for (auto& position : selection)
-                cells.append(&m_selected_view->sheet().ensure(position));
-
-            auto first_cell = cells.first();
-            m_cell_value_editor->on_change = nullptr;
-            m_cell_value_editor->set_text("");
-            m_should_change_selected_cells = false;
-            m_cell_value_editor->on_focusin = [this] { m_should_change_selected_cells = true; };
-            m_cell_value_editor->on_focusout = [this] { m_should_change_selected_cells = false; };
-            m_cell_value_editor->on_change = [cells = move(cells), this] {
-                if (m_should_change_selected_cells) {
-                    auto text = m_cell_value_editor->text();
-                    // FIXME: Lines?
-                    auto offset = m_cell_value_editor->cursor().column();
-                    try_generate_tip_for_input_expression(text, offset);
-                    for (auto* cell : cells)
-                        cell->set_data(text);
-                    m_selected_view->sheet().update();
-                    update();
-                }
-            };
-            m_cell_value_editor->set_enabled(true);
-            static_cast<CellSyntaxHighlighter*>(const_cast<GUI::SyntaxHighlighter*>(m_cell_value_editor->syntax_highlighter()))->set_cell(first_cell);
-        };
-        m_selected_view->on_selection_dropped = [&]() {
-            m_cell_value_editor->set_enabled(false);
-            static_cast<CellSyntaxHighlighter*>(const_cast<GUI::SyntaxHighlighter*>(m_cell_value_editor->syntax_highlighter()))->set_cell(nullptr);
-            m_cell_value_editor->set_text("");
-            m_current_cell_label->set_enabled(false);
-            m_current_cell_label->set_text("");
-        };
-    };
-
-    if (first_tab_widget)
-        change(*first_tab_widget);
-
-    m_tab_widget->on_change = [change = move(change)](auto& selected_widget) {
-        change(selected_widget);
-    };
-
-    m_tab_widget->on_context_menu_request = [&](auto& widget, auto& event) {
-        m_tab_context_menu_sheet_view = widget;
-        m_tab_context_menu->popup(event.screen_position());
-    };
-}
-
-void SpreadsheetWidget::try_generate_tip_for_input_expression(StringView source, size_t cursor_offset)
-{
-    m_inline_documentation_window->set_rect(m_cell_value_editor->screen_relative_rect().translated(0, m_cell_value_editor->height() + 7).inflated(6, 6));
-    if (!m_selected_view || !source.starts_with('=')) {
-        m_inline_documentation_window->hide();
-        return;
-    }
-    auto maybe_function_and_argument = get_function_and_argument_index(source.substring_view(0, cursor_offset));
-    if (!maybe_function_and_argument.has_value()) {
-        m_inline_documentation_window->hide();
-        return;
-    }
-
-    auto& [name, index] = maybe_function_and_argument.value();
-    auto& sheet = m_selected_view->sheet();
-    auto text = sheet.generate_inline_documentation_for(name, index);
-    if (text.is_empty()) {
-        m_inline_documentation_window->hide();
-    } else {
-        m_inline_documentation_label->set_text(move(text));
-        m_inline_documentation_window->show();
-    }
-}
-
-void SpreadsheetWidget::save(const StringView& filename)
-{
-    auto result = m_workbook->save(filename);
-    if (result.is_error())
-        GUI::MessageBox::show_error(window(), result.error());
-}
-
-void SpreadsheetWidget::load(const StringView& filename)
-{
-    auto result = m_workbook->load(filename);
-    if (result.is_error()) {
-        GUI::MessageBox::show_error(window(), result.error());
-        return;
-    }
-
-    m_tab_widget->on_change = nullptr;
-    m_cell_value_editor->on_change = nullptr;
-    m_current_cell_label->set_text("");
-    m_should_change_selected_cells = false;
-    while (auto* widget = m_tab_widget->active_widget()) {
-        m_tab_widget->remove_tab(*widget);
-    }
-
-    setup_tabs(m_workbook->sheets());
-}
-
-bool SpreadsheetWidget::request_close()
-{
-    if (!m_workbook->dirty())
-        return true;
-
-    auto result = GUI::MessageBox::show(window(), "The spreadsheet has been modified. Would you like to save?", "Unsaved changes", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
-
-    if (result == GUI::MessageBox::ExecYes) {
-        if (current_filename().is_empty()) {
-            String name = "workbook";
-            Optional<String> save_path = GUI::FilePicker::get_save_filepath(window(), name, "sheets");
-            if (!save_path.has_value())
-                return false;
-
-            save(save_path.value());
-        } else {
-            save(current_filename());
-        }
-        return true;
-    }
-
-    if (result == GUI::MessageBox::ExecNo)
-        return true;
-
-    return false;
-}
-
-void SpreadsheetWidget::add_sheet()
-{
-    StringBuilder name;
-    name.append("Sheet");
-    name.appendff(" {}", m_workbook->sheets().size() + 1);
-
-    NonnullRefPtrVector<Sheet> new_sheets;
-    new_sheets.append(m_workbook->add_sheet(name.string_view()));
-    setup_tabs(move(new_sheets));
-}
-
-void SpreadsheetWidget::add_sheet(NonnullRefPtr<Sheet>&& sheet)
-{
-    ASSERT(m_workbook == &sheet->workbook());
-
-    NonnullRefPtrVector<Sheet> new_sheets;
-    new_sheets.append(move(sheet));
-    m_workbook->sheets().append(new_sheets);
-    setup_tabs(new_sheets);
-}
-
-void SpreadsheetWidget::set_filename(const String& filename)
-{
-    if (m_workbook->set_filename(filename)) {
-        StringBuilder builder;
-        builder.append("Spreadsheet - ");
-        builder.append(current_filename());
-
-        window()->set_title(builder.string_view());
-        window()->update();
-    }
-}
-
-SpreadsheetWidget::~SpreadsheetWidget()
-{
-}
-}
diff --git a/Applications/Spreadsheet/SpreadsheetWidget.h b/Applications/Spreadsheet/SpreadsheetWidget.h
deleted file mode 100644
index b29fc557d6..0000000000
--- a/Applications/Spreadsheet/SpreadsheetWidget.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "SpreadsheetView.h"
-#include "Workbook.h"
-#include <AK/NonnullRefPtrVector.h>
-#include <LibGUI/Widget.h>
-
-namespace Spreadsheet {
-
-class SpreadsheetWidget final : public GUI::Widget {
-    C_OBJECT(SpreadsheetWidget);
-
-public:
-    ~SpreadsheetWidget();
-
-    void save(const StringView& filename);
-    void load(const StringView& filename);
-    bool request_close();
-    void add_sheet();
-    void add_sheet(NonnullRefPtr<Sheet>&&);
-
-    const String& current_filename() const { return m_workbook->current_filename(); }
-    const Sheet& current_worksheet() const { return m_selected_view->sheet(); }
-    Sheet& current_worksheet() { return m_selected_view->sheet(); }
-    void set_filename(const String& filename);
-
-    Workbook& workbook() { return *m_workbook; }
-    const Workbook& workbook() const { return *m_workbook; }
-
-    const GUI::ModelIndex* current_selection_cursor() const
-    {
-        if (!m_selected_view)
-            return nullptr;
-
-        return m_selected_view->cursor();
-    }
-
-private:
-    virtual void resize_event(GUI::ResizeEvent&) override;
-
-    explicit SpreadsheetWidget(NonnullRefPtrVector<Sheet>&& sheets = {}, bool should_add_sheet_if_empty = true);
-
-    void setup_tabs(NonnullRefPtrVector<Sheet> new_sheets);
-
-    void try_generate_tip_for_input_expression(StringView source, size_t offset);
-
-    SpreadsheetView* m_selected_view { nullptr };
-    RefPtr<GUI::Label> m_current_cell_label;
-    RefPtr<GUI::TextEditor> m_cell_value_editor;
-    RefPtr<GUI::Window> m_inline_documentation_window;
-    RefPtr<GUI::Label> m_inline_documentation_label;
-    RefPtr<GUI::TabWidget> m_tab_widget;
-    RefPtr<GUI::Menu> m_tab_context_menu;
-    RefPtr<SpreadsheetView> m_tab_context_menu_sheet_view;
-    bool m_should_change_selected_cells { false };
-
-    OwnPtr<Workbook> m_workbook;
-};
-
-}
diff --git a/Applications/Spreadsheet/Workbook.cpp b/Applications/Spreadsheet/Workbook.cpp
deleted file mode 100644
index db5bf16cb5..0000000000
--- a/Applications/Spreadsheet/Workbook.cpp
+++ /dev/null
@@ -1,190 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Workbook.h"
-#include "JSIntegration.h"
-#include "Readers/CSV.h"
-#include "Writers/CSV.h"
-#include <AK/ByteBuffer.h>
-#include <AK/JsonArray.h>
-#include <AK/JsonObject.h>
-#include <AK/JsonObjectSerializer.h>
-#include <AK/JsonParser.h>
-#include <AK/Stream.h>
-#include <LibCore/File.h>
-#include <LibCore/FileStream.h>
-#include <LibCore/MimeData.h>
-#include <LibJS/Parser.h>
-#include <LibJS/Runtime/GlobalObject.h>
-#include <string.h>
-
-namespace Spreadsheet {
-
-static JS::VM& global_vm()
-{
-    static RefPtr<JS::VM> vm;
-    if (!vm)
-        vm = JS::VM::create();
-    return *vm;
-}
-
-Workbook::Workbook(NonnullRefPtrVector<Sheet>&& sheets)
-    : m_sheets(move(sheets))
-    , m_interpreter(JS::Interpreter::create<JS::GlobalObject>(global_vm()))
-    , m_interpreter_scope(JS::VM::InterpreterExecutionScope(interpreter()))
-{
-    m_workbook_object = interpreter().heap().allocate<WorkbookObject>(global_object(), *this);
-    global_object().put("workbook", workbook_object());
-}
-
-bool Workbook::set_filename(const String& filename)
-{
-    if (m_current_filename == filename)
-        return false;
-
-    m_current_filename = filename;
-    return true;
-}
-
-Result<bool, String> Workbook::load(const StringView& filename)
-{
-    auto file_or_error = Core::File::open(filename, Core::IODevice::OpenMode::ReadOnly);
-    if (file_or_error.is_error()) {
-        StringBuilder sb;
-        sb.append("Failed to open ");
-        sb.append(filename);
-        sb.append(" for reading. Error: ");
-        sb.append(file_or_error.error());
-
-        return sb.to_string();
-    }
-
-    auto mime = Core::guess_mime_type_based_on_filename(filename);
-
-    if (mime == "text/csv") {
-        // FIXME: Prompt the user for settings.
-        NonnullRefPtrVector<Sheet> sheets;
-
-        auto sheet = Sheet::from_xsv(Reader::CSV(file_or_error.value()->read_all(), Reader::default_behaviours() | Reader::ParserBehaviour::ReadHeaders), *this);
-        if (sheet)
-            sheets.append(sheet.release_nonnull());
-
-        m_sheets.clear();
-        m_sheets = move(sheets);
-    } else {
-        // Assume JSON.
-        auto json_value_option = JsonParser(file_or_error.value()->read_all()).parse();
-        if (!json_value_option.has_value()) {
-            StringBuilder sb;
-            sb.append("Failed to parse ");
-            sb.append(filename);
-
-            return sb.to_string();
-        }
-
-        auto& json_value = json_value_option.value();
-        if (!json_value.is_array()) {
-            StringBuilder sb;
-            sb.append("Did not find a spreadsheet in ");
-            sb.append(filename);
-
-            return sb.to_string();
-        }
-
-        NonnullRefPtrVector<Sheet> sheets;
-
-        auto& json_array = json_value.as_array();
-        json_array.for_each([&](auto& sheet_json) {
-            if (!sheet_json.is_object())
-                return IterationDecision::Continue;
-
-            auto sheet = Sheet::from_json(sheet_json.as_object(), *this);
-            if (!sheet)
-                return IterationDecision::Continue;
-
-            sheets.append(sheet.release_nonnull());
-
-            return IterationDecision::Continue;
-        });
-
-        m_sheets.clear();
-        m_sheets = move(sheets);
-    }
-
-    set_filename(filename);
-
-    return true;
-}
-
-Result<bool, String> Workbook::save(const StringView& filename)
-{
-    auto mime = Core::guess_mime_type_based_on_filename(filename);
-    auto file = Core::File::construct(filename);
-    file->open(Core::IODevice::WriteOnly);
-    if (!file->is_open()) {
-        StringBuilder sb;
-        sb.append("Failed to open ");
-        sb.append(filename);
-        sb.append(" for write. Error: ");
-        sb.append(file->error_string());
-
-        return sb.to_string();
-    }
-
-    if (mime == "text/csv") {
-        // FIXME: Prompt the user for settings and which sheet to export.
-        Core::OutputFileStream stream { file };
-        auto data = m_sheets[0].to_xsv();
-        auto header_string = data.take_first();
-        Vector<StringView> headers;
-        for (auto& str : header_string)
-            headers.append(str);
-        Writer::CSV csv { stream, data, headers };
-        if (csv.has_error())
-            return String::formatted("Unable to save file, CSV writer error: {}", csv.error_string());
-    } else {
-        JsonArray array;
-        for (auto& sheet : m_sheets)
-            array.append(sheet.to_json());
-
-        auto file_content = array.to_string();
-        bool result = file->write(file_content);
-        if (!result) {
-            int error_number = errno;
-            StringBuilder sb;
-            sb.append("Unable to save file. Error: ");
-            sb.append(strerror(error_number));
-
-            return sb.to_string();
-        }
-    }
-
-    set_filename(filename);
-    set_dirty(false);
-    return true;
-}
-
-}
diff --git a/Applications/Spreadsheet/Workbook.h b/Applications/Spreadsheet/Workbook.h
deleted file mode 100644
index 63c016d501..0000000000
--- a/Applications/Spreadsheet/Workbook.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "Forward.h"
-#include "Spreadsheet.h"
-#include <AK/NonnullOwnPtrVector.h>
-#include <AK/Result.h>
-
-namespace Spreadsheet {
-
-class Workbook {
-public:
-    Workbook(NonnullRefPtrVector<Sheet>&& sheets);
-
-    Result<bool, String> save(const StringView& filename);
-    Result<bool, String> load(const StringView& filename);
-
-    const String& current_filename() const { return m_current_filename; }
-    bool set_filename(const String& filename);
-    bool dirty() { return m_dirty; }
-    void set_dirty(bool dirty) { m_dirty = dirty; }
-
-    bool has_sheets() const { return !m_sheets.is_empty(); }
-
-    const NonnullRefPtrVector<Sheet>& sheets() const { return m_sheets; }
-    NonnullRefPtrVector<Sheet> sheets() { return m_sheets; }
-
-    Sheet& add_sheet(const StringView& name)
-    {
-        auto sheet = Sheet::construct(name, *this);
-        m_sheets.append(sheet);
-        return *sheet;
-    }
-
-    JS::Interpreter& interpreter() { return *m_interpreter; }
-    const JS::Interpreter& interpreter() const { return *m_interpreter; }
-
-    JS::GlobalObject& global_object() { return m_interpreter->global_object(); }
-    const JS::GlobalObject& global_object() const { return m_interpreter->global_object(); }
-
-    WorkbookObject* workbook_object() { return m_workbook_object; }
-
-private:
-    NonnullRefPtrVector<Sheet> m_sheets;
-    NonnullOwnPtr<JS::Interpreter> m_interpreter;
-    JS::VM::InterpreterExecutionScope m_interpreter_scope;
-    WorkbookObject* m_workbook_object { nullptr };
-
-    String m_current_filename;
-    bool m_dirty { false };
-};
-
-}
diff --git a/Applications/Spreadsheet/Writers/CSV.h b/Applications/Spreadsheet/Writers/CSV.h
deleted file mode 100644
index 49940fbdf1..0000000000
--- a/Applications/Spreadsheet/Writers/CSV.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include "XSV.h"
-#include <AK/Forward.h>
-#include <AK/StringView.h>
-
-namespace Writer {
-
-template<typename ContainerType>
-class CSV : public XSV<ContainerType> {
-public:
-    CSV(OutputStream& output, const ContainerType& data, const Vector<StringView>& headers = {}, WriterBehaviour behaviours = default_behaviours())
-        : XSV<ContainerType>(output, data, { ",", "\"", WriterTraits::Repeat }, headers, behaviours)
-    {
-    }
-};
-
-}
diff --git a/Applications/Spreadsheet/Writers/Test/TestXSVWriter.cpp b/Applications/Spreadsheet/Writers/Test/TestXSVWriter.cpp
deleted file mode 100644
index 4971658431..0000000000
--- a/Applications/Spreadsheet/Writers/Test/TestXSVWriter.cpp
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/TestSuite.h>
-
-#include "../CSV.h"
-#include "../XSV.h"
-#include <AK/MemoryStream.h>
-
-TEST_CASE(can_write)
-{
-    Vector<Vector<int>> data = {
-        { 1, 2, 3 },
-        { 4, 5, 6 },
-        { 7, 8, 9 },
-    };
-
-    auto buffer = ByteBuffer::create_uninitialized(1024);
-    OutputMemoryStream stream { buffer };
-
-    Writer::CSV csv(stream, data);
-
-    auto expected_output = R"~(1,2,3
-4,5,6
-7,8,9
-)~";
-
-    EXPECT_EQ(StringView { stream.bytes() }, expected_output);
-}
-
-TEST_CASE(can_write_with_header)
-{
-    Vector<Vector<int>> data = {
-        { 1, 2, 3 },
-        { 4, 5, 6 },
-        { 7, 8, 9 },
-    };
-
-    auto buffer = ByteBuffer::create_uninitialized(1024);
-    OutputMemoryStream stream { buffer };
-
-    Writer::CSV csv(stream, data, { "A", "B\"", "C" });
-
-    auto expected_output = R"~(A,"B""",C
-1,2,3
-4,5,6
-7,8,9
-)~";
-
-    EXPECT_EQ(StringView { stream.bytes() }, expected_output);
-}
-
-TEST_CASE(can_write_with_different_behaviours)
-{
-    Vector<Vector<String>> data = {
-        { "Well", "Hello\"", "Friends" },
-        { "We\"ll", "Hello,", "   Friends" },
-    };
-
-    auto buffer = ByteBuffer::create_uninitialized(1024);
-    OutputMemoryStream stream { buffer };
-
-    Writer::CSV csv(stream, data, { "A", "B\"", "C" }, Writer::WriterBehaviour::QuoteOnlyInFieldStart | Writer::WriterBehaviour::WriteHeaders);
-
-    auto expected_output = R"~(A,B",C
-Well,Hello",Friends
-We"ll,"Hello,",   Friends
-)~";
-
-    EXPECT_EQ(StringView { stream.bytes() }, expected_output);
-}
-
-TEST_MAIN(XSV)
diff --git a/Applications/Spreadsheet/Writers/XSV.h b/Applications/Spreadsheet/Writers/XSV.h
deleted file mode 100644
index 7a065f87d1..0000000000
--- a/Applications/Spreadsheet/Writers/XSV.h
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/GenericLexer.h>
-#include <AK/OwnPtr.h>
-#include <AK/Stream.h>
-#include <AK/String.h>
-#include <AK/StringView.h>
-#include <AK/Types.h>
-#include <AK/Vector.h>
-
-namespace Writer {
-
-enum class WriterBehaviour : u32 {
-    None = 0,
-    WriteHeaders = 1,
-    AllowNewlinesInFields = WriteHeaders << 1,
-    QuoteOnlyInFieldStart = WriteHeaders << 2,
-    QuoteAll = WriteHeaders << 3,
-};
-
-inline WriterBehaviour operator&(WriterBehaviour left, WriterBehaviour right)
-{
-    return static_cast<WriterBehaviour>(static_cast<u32>(left) & static_cast<u32>(right));
-}
-
-inline WriterBehaviour operator|(WriterBehaviour left, WriterBehaviour right)
-{
-    return static_cast<WriterBehaviour>(static_cast<u32>(left) | static_cast<u32>(right));
-}
-
-struct WriterTraits {
-    String separator;
-    String quote { "\"" };
-    enum {
-        Repeat,
-        Backslash,
-    } quote_escape { Repeat };
-};
-
-#define ENUMERATE_WRITE_ERRORS()                                                  \
-    E(None, "No errors")                                                          \
-    E(NonConformingColumnCount, "Header count does not match given column count") \
-    E(InternalError, "Internal error")
-
-enum class WriteError {
-#define E(name, _) name,
-    ENUMERATE_WRITE_ERRORS()
-#undef E
-};
-
-inline constexpr WriterBehaviour default_behaviours()
-{
-    return WriterBehaviour::None;
-}
-
-template<typename ContainerType>
-class XSV {
-public:
-    XSV(OutputStream& output, const ContainerType& data, const WriterTraits& traits, const Vector<StringView>& headers = {}, WriterBehaviour behaviours = default_behaviours())
-        : m_data(data)
-        , m_traits(traits)
-        , m_behaviours(behaviours)
-        , m_names(headers)
-        , m_output(output)
-    {
-        if (!headers.is_empty())
-            m_behaviours = m_behaviours | WriterBehaviour::WriteHeaders;
-
-        generate();
-    }
-
-    virtual ~XSV() { }
-
-    bool has_error() const { return m_error != WriteError::None; }
-    WriteError error() const { return m_error; }
-    String error_string() const
-    {
-        switch (m_error) {
-#define E(x, y)         \
-    case WriteError::x: \
-        return y;
-
-            ENUMERATE_WRITE_ERRORS();
-#undef E
-        }
-        ASSERT_NOT_REACHED();
-    }
-
-private:
-    void set_error(WriteError error)
-    {
-        if (m_error == WriteError::None)
-            m_error = error;
-    }
-
-    void generate()
-    {
-        auto with_headers = (m_behaviours & WriterBehaviour::WriteHeaders) != WriterBehaviour::None;
-        if (with_headers) {
-            write_row(m_names);
-            if (m_output.write({ "\n", 1 }) != 1)
-                set_error(WriteError::InternalError);
-        }
-
-        for (auto&& row : m_data) {
-            if (with_headers) {
-                if (row.size() != m_names.size())
-                    set_error(WriteError::NonConformingColumnCount);
-            }
-
-            write_row(row);
-            if (m_output.write({ "\n", 1 }) != 1)
-                set_error(WriteError::InternalError);
-        }
-    }
-
-    template<typename T>
-    void write_row(T&& row)
-    {
-        bool first = true;
-        for (auto&& entry : row) {
-            if (!first) {
-                if (m_output.write(m_traits.separator.bytes()) != m_traits.separator.length())
-                    set_error(WriteError::InternalError);
-            }
-            first = false;
-            write_entry(entry);
-        }
-    }
-
-    template<typename T>
-    void write_entry(T&& entry)
-    {
-        auto string = String::formatted("{}", FormatIfSupported(entry));
-
-        auto safe_to_write_normally = !string.contains("\n") && !string.contains(m_traits.separator);
-        if (safe_to_write_normally) {
-            if ((m_behaviours & WriterBehaviour::QuoteOnlyInFieldStart) == WriterBehaviour::None)
-                safe_to_write_normally = !string.contains(m_traits.quote);
-            else
-                safe_to_write_normally = !string.starts_with(m_traits.quote);
-        }
-        if (safe_to_write_normally) {
-            if (m_output.write(string.bytes()) != string.length())
-                set_error(WriteError::InternalError);
-            return;
-        }
-
-        if (m_output.write(m_traits.quote.bytes()) != m_traits.quote.length())
-            set_error(WriteError::InternalError);
-
-        GenericLexer lexer(string);
-        while (!lexer.is_eof()) {
-            if (lexer.consume_specific(m_traits.quote)) {
-                switch (m_traits.quote_escape) {
-                case WriterTraits::Repeat:
-                    if (m_output.write(m_traits.quote.bytes()) != m_traits.quote.length())
-                        set_error(WriteError::InternalError);
-                    if (m_output.write(m_traits.quote.bytes()) != m_traits.quote.length())
-                        set_error(WriteError::InternalError);
-                    break;
-                case WriterTraits::Backslash:
-                    if (m_output.write({ "\\", 1 }) != 1)
-                        set_error(WriteError::InternalError);
-                    if (m_output.write(m_traits.quote.bytes()) != m_traits.quote.length())
-                        set_error(WriteError::InternalError);
-                    break;
-                }
-                continue;
-            }
-
-            auto ch = lexer.consume();
-            if (m_output.write({ &ch, 1 }) != 1)
-                set_error(WriteError::InternalError);
-        }
-
-        if (m_output.write(m_traits.quote.bytes()) != m_traits.quote.length())
-            set_error(WriteError::InternalError);
-    }
-
-    const ContainerType& m_data;
-    const WriterTraits& m_traits;
-    WriterBehaviour m_behaviours;
-    const Vector<StringView>& m_names;
-    WriteError m_error { WriteError::None };
-    OutputStream& m_output;
-};
-
-}
diff --git a/Applications/Spreadsheet/main.cpp b/Applications/Spreadsheet/main.cpp
deleted file mode 100644
index e13a89cdac..0000000000
--- a/Applications/Spreadsheet/main.cpp
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "HelpWindow.h"
-#include "Spreadsheet.h"
-#include "SpreadsheetWidget.h"
-#include <AK/ScopeGuard.h>
-#include <LibCore/ArgsParser.h>
-#include <LibCore/File.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/Clipboard.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/Forward.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/Window.h>
-
-int main(int argc, char* argv[])
-{
-    if (pledge("stdio shared_buffer accept rpath unix cpath wpath fattr thread", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio thread rpath accept cpath wpath shared_buffer unix", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    const char* filename = nullptr;
-
-    Core::ArgsParser args_parser;
-    args_parser.add_positional_argument(filename, "File to read from", "file", Core::ArgsParser::Required::No);
-
-    args_parser.parse(argc, argv);
-
-    if (filename) {
-        if (!Core::File::exists(filename) || Core::File::is_directory(filename)) {
-            warnln("File does not exist or is a directory: {}", filename);
-            return 1;
-        }
-    }
-
-    if (unveil("/tmp/portal/webcontent", "rw") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/etc", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil(Core::StandardPaths::home_directory().characters(), "rwc") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil(nullptr, nullptr) < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-spreadsheet");
-    auto window = GUI::Window::construct();
-    window->set_title("Spreadsheet");
-    window->resize(640, 480);
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    auto& spreadsheet_widget = window->set_main_widget<Spreadsheet::SpreadsheetWidget>(NonnullRefPtrVector<Spreadsheet::Sheet> {}, filename == nullptr);
-
-    if (filename)
-        spreadsheet_widget.load(filename);
-
-    auto menubar = GUI::MenuBar::construct();
-    auto& app_menu = menubar->add_menu("Spreadsheet");
-
-    app_menu.add_action(GUI::Action::create("Add New Sheet", Gfx::Bitmap::load_from_file("/res/icons/16x16/new-tab.png"), [&](auto&) {
-        spreadsheet_widget.add_sheet();
-    }));
-
-    app_menu.add_separator();
-
-    app_menu.add_action(GUI::CommonActions::make_quit_action([&](auto&) {
-        if (!spreadsheet_widget.request_close())
-            return;
-        app->quit(0);
-    }));
-
-    window->on_close_request = [&]() -> GUI::Window::CloseRequestDecision {
-        if (spreadsheet_widget.request_close())
-            return GUI::Window::CloseRequestDecision::Close;
-        return GUI::Window::CloseRequestDecision::StayOpen;
-    };
-
-    auto& file_menu = menubar->add_menu("File");
-    file_menu.add_action(GUI::CommonActions::make_open_action([&](auto&) {
-        Optional<String> load_path = GUI::FilePicker::get_open_filepath(window);
-        if (!load_path.has_value())
-            return;
-
-        spreadsheet_widget.load(load_path.value());
-    }));
-
-    file_menu.add_action(GUI::CommonActions::make_save_action([&](auto&) {
-        if (spreadsheet_widget.current_filename().is_empty()) {
-            String name = "workbook";
-            Optional<String> save_path = GUI::FilePicker::get_save_filepath(window, name, "sheets");
-            if (!save_path.has_value())
-                return;
-
-            spreadsheet_widget.save(save_path.value());
-        } else {
-            spreadsheet_widget.save(spreadsheet_widget.current_filename());
-        }
-    }));
-
-    file_menu.add_action(GUI::CommonActions::make_save_as_action([&](auto&) {
-        auto current_filename = spreadsheet_widget.current_filename();
-        String name = "workbook";
-        Optional<String> save_path = GUI::FilePicker::get_save_filepath(window, name, "sheets");
-        if (!save_path.has_value())
-            return;
-
-        spreadsheet_widget.save(save_path.value());
-
-        if (!current_filename.is_empty())
-            spreadsheet_widget.set_filename(current_filename);
-    }));
-
-    auto& edit_menu = menubar->add_menu("Edit");
-    edit_menu.add_action(GUI::CommonActions::make_copy_action([&](auto&) {
-        /// text/x-spreadsheet-data:
-        /// - currently selected cell
-        /// - selected cell+
-        auto& cells = spreadsheet_widget.current_worksheet().selected_cells();
-        ASSERT(!cells.is_empty());
-        StringBuilder text_builder, url_builder;
-        bool first = true;
-        auto cursor = spreadsheet_widget.current_selection_cursor();
-        if (cursor) {
-            Spreadsheet::Position position { spreadsheet_widget.current_worksheet().column(cursor->column()), (size_t)cursor->row() };
-            url_builder.append(position.to_url().to_string());
-            url_builder.append('\n');
-        }
-
-        for (auto& cell : cells) {
-            if (first && !cursor) {
-                url_builder.append(cell.to_url().to_string());
-                url_builder.append('\n');
-            }
-
-            url_builder.append(cell.to_url().to_string());
-            url_builder.append('\n');
-
-            auto cell_data = spreadsheet_widget.current_worksheet().at(cell);
-            if (!first)
-                text_builder.append('\t');
-            if (cell_data)
-                text_builder.append(cell_data->data());
-            first = false;
-        }
-        HashMap<String, String> metadata;
-        metadata.set("text/x-spreadsheet-data", url_builder.to_string());
-
-        GUI::Clipboard::the().set_data(text_builder.string_view().bytes(), "text/plain", move(metadata));
-    },
-        window));
-    edit_menu.add_action(GUI::CommonActions::make_paste_action([&](auto&) {
-        ScopeGuard update_after_paste { [&] { spreadsheet_widget.update(); } };
-
-        auto& cells = spreadsheet_widget.current_worksheet().selected_cells();
-        ASSERT(!cells.is_empty());
-        const auto& data = GUI::Clipboard::the().data_and_type();
-        if (auto spreadsheet_data = data.metadata.get("text/x-spreadsheet-data"); spreadsheet_data.has_value()) {
-            Vector<Spreadsheet::Position> source_positions, target_positions;
-            auto& sheet = spreadsheet_widget.current_worksheet();
-
-            for (auto& line : spreadsheet_data.value().split_view('\n')) {
-                dbgln("Paste line '{}'", line);
-                auto position = sheet.position_from_url(line);
-                if (position.has_value())
-                    source_positions.append(position.release_value());
-            }
-
-            for (auto& position : spreadsheet_widget.current_worksheet().selected_cells())
-                target_positions.append(position);
-
-            if (source_positions.is_empty())
-                return;
-
-            auto first_position = source_positions.take_first();
-            sheet.copy_cells(move(source_positions), move(target_positions), first_position);
-        } else {
-            for (auto& cell : spreadsheet_widget.current_worksheet().selected_cells())
-                spreadsheet_widget.current_worksheet().ensure(cell).set_data(StringView { data.data.data(), data.data.size() });
-            spreadsheet_widget.update();
-        }
-    },
-        window));
-
-    auto& help_menu = menubar->add_menu("Help");
-
-    help_menu.add_action(GUI::Action::create(
-        "Functions Help", [&](auto&) {
-            auto docs = spreadsheet_widget.current_worksheet().gather_documentation();
-            auto help_window = Spreadsheet::HelpWindow::the(window);
-            help_window->set_docs(move(docs));
-            help_window->show();
-        },
-        window));
-
-    app_menu.add_separator();
-
-    help_menu.add_action(GUI::CommonActions::make_about_action("Spreadsheet", app_icon, window));
-
-    app->set_menubar(move(menubar));
-
-    window->show();
-
-    return app->exec();
-}
diff --git a/Applications/SystemMonitor/CMakeLists.txt b/Applications/SystemMonitor/CMakeLists.txt
deleted file mode 100644
index ee2e4d2323..0000000000
--- a/Applications/SystemMonitor/CMakeLists.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-set(SOURCES
-    DevicesModel.cpp
-    GraphWidget.cpp
-    InterruptsWidget.cpp
-    main.cpp
-    MemoryStatsWidget.cpp
-    NetworkStatisticsWidget.cpp
-    ProcessFileDescriptorMapWidget.cpp
-    ProcessMemoryMapWidget.cpp
-    ProcessModel.cpp
-    ProcessUnveiledPathsWidget.cpp
-    ThreadStackWidget.cpp
-)
-
-serenity_app(SystemMonitor ICON app-system-monitor)
-target_link_libraries(SystemMonitor LibGUI LibPCIDB)
diff --git a/Applications/SystemMonitor/DevicesModel.cpp b/Applications/SystemMonitor/DevicesModel.cpp
deleted file mode 100644
index f0692cdd24..0000000000
--- a/Applications/SystemMonitor/DevicesModel.cpp
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "DevicesModel.h"
-#include <AK/JsonArray.h>
-#include <AK/JsonObject.h>
-#include <AK/JsonValue.h>
-#include <LibCore/DirIterator.h>
-#include <LibCore/File.h>
-#include <sys/stat.h>
-
-NonnullRefPtr<DevicesModel> DevicesModel::create()
-{
-    return adopt(*new DevicesModel);
-}
-
-DevicesModel::DevicesModel()
-{
-}
-
-DevicesModel::~DevicesModel()
-{
-}
-
-int DevicesModel::row_count(const GUI::ModelIndex&) const
-{
-    return m_devices.size();
-}
-
-int DevicesModel::column_count(const GUI::ModelIndex&) const
-{
-    return Column::__Count;
-}
-
-String DevicesModel::column_name(int column) const
-{
-    switch (column) {
-    case Column::Device:
-        return "Device";
-    case Column::Major:
-        return "Major";
-    case Column::Minor:
-        return "Minor";
-    case Column::ClassName:
-        return "Class";
-    case Column::Type:
-        return "Type";
-    default:
-        ASSERT_NOT_REACHED();
-    }
-}
-
-GUI::Variant DevicesModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
-{
-    ASSERT(is_valid(index));
-
-    if (role == GUI::ModelRole::TextAlignment) {
-        switch (index.column()) {
-        case Column::Device:
-            return Gfx::TextAlignment::CenterLeft;
-        case Column::Major:
-            return Gfx::TextAlignment::CenterRight;
-        case Column::Minor:
-            return Gfx::TextAlignment::CenterRight;
-        case Column::ClassName:
-            return Gfx::TextAlignment::CenterLeft;
-        case Column::Type:
-            return Gfx::TextAlignment::CenterLeft;
-        }
-        return {};
-    }
-
-    if (role == GUI::ModelRole::Sort) {
-        const DeviceInfo& device = m_devices[index.row()];
-        switch (index.column()) {
-        case Column::Device:
-            return device.path;
-        case Column::Major:
-            return device.major;
-        case Column::Minor:
-            return device.minor;
-        case Column::ClassName:
-            return device.class_name;
-        case Column::Type:
-            return device.type;
-        default:
-            ASSERT_NOT_REACHED();
-        }
-    }
-
-    if (role == GUI::ModelRole::Display) {
-        const DeviceInfo& device = m_devices[index.row()];
-        switch (index.column()) {
-        case Column::Device:
-            return device.path;
-        case Column::Major:
-            return device.major;
-        case Column::Minor:
-            return device.minor;
-        case Column::ClassName:
-            return device.class_name;
-        case Column::Type:
-            switch (device.type) {
-            case DeviceInfo::Type::Block:
-                return "Block";
-            case DeviceInfo::Type::Character:
-                return "Character";
-            default:
-                ASSERT_NOT_REACHED();
-            }
-        default:
-            ASSERT_NOT_REACHED();
-        }
-    }
-
-    return {};
-}
-
-void DevicesModel::update()
-{
-    auto proc_devices = Core::File::construct("/proc/devices");
-    if (!proc_devices->open(Core::IODevice::OpenMode::ReadOnly))
-        ASSERT_NOT_REACHED();
-
-    auto json = JsonValue::from_string(proc_devices->read_all());
-    ASSERT(json.has_value());
-
-    m_devices.clear();
-    json.value().as_array().for_each([this](auto& value) {
-        JsonObject device = value.as_object();
-        DeviceInfo device_info;
-
-        device_info.major = device.get("major").to_uint();
-        device_info.minor = device.get("minor").to_uint();
-        device_info.class_name = device.get("class_name").to_string();
-
-        String type_str = device.get("type").to_string();
-        if (type_str == "block")
-            device_info.type = DeviceInfo::Type::Block;
-        else if (type_str == "character")
-            device_info.type = DeviceInfo::Type::Character;
-        else
-            ASSERT_NOT_REACHED();
-
-        m_devices.append(move(device_info));
-    });
-
-    auto fill_in_paths_from_dir = [this](const String& dir) {
-        Core::DirIterator dir_iter { dir, Core::DirIterator::Flags::SkipDots };
-        while (dir_iter.has_next()) {
-            auto name = dir_iter.next_path();
-            auto path = String::format("%s/%s", dir.characters(), name.characters());
-            struct stat statbuf;
-            if (lstat(path.characters(), &statbuf) != 0) {
-                ASSERT_NOT_REACHED();
-            }
-            if (!S_ISBLK(statbuf.st_mode) && !S_ISCHR(statbuf.st_mode))
-                continue;
-            unsigned _major = major(statbuf.st_rdev);
-            unsigned _minor = minor(statbuf.st_rdev);
-
-            auto it = m_devices.find_if([_major, _minor](const auto& device_info) {
-                return device_info.major == _major && device_info.minor == _minor;
-            });
-            if (it != m_devices.end()) {
-                (*it).path = move(path);
-            }
-        }
-    };
-
-    fill_in_paths_from_dir("/dev");
-    fill_in_paths_from_dir("/dev/pts");
-
-    did_update();
-}
diff --git a/Applications/SystemMonitor/DevicesModel.h b/Applications/SystemMonitor/DevicesModel.h
deleted file mode 100644
index dd8cacc7e0..0000000000
--- a/Applications/SystemMonitor/DevicesModel.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/String.h>
-#include <AK/Vector.h>
-#include <LibGUI/Model.h>
-
-class DevicesModel final : public GUI::Model {
-public:
-    enum Column {
-        Device = 0,
-        Major,
-        Minor,
-        ClassName,
-        Type,
-        __Count
-    };
-
-    virtual ~DevicesModel() override;
-    static NonnullRefPtr<DevicesModel> create();
-
-    virtual int row_count(const GUI::ModelIndex&) const override;
-    virtual int column_count(const GUI::ModelIndex&) const override;
-    virtual String column_name(int column) const override;
-    virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
-    virtual void update() override;
-
-private:
-    DevicesModel();
-
-    struct DeviceInfo {
-        String path;
-        unsigned major;
-        unsigned minor;
-        String class_name;
-        enum Type {
-            Block,
-            Character
-        };
-        Type type;
-    };
-
-    Vector<DeviceInfo> m_devices;
-};
diff --git a/Applications/SystemMonitor/GraphWidget.cpp b/Applications/SystemMonitor/GraphWidget.cpp
deleted file mode 100644
index 5c1d9982d4..0000000000
--- a/Applications/SystemMonitor/GraphWidget.cpp
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "GraphWidget.h"
-#include <LibGUI/Painter.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/Path.h>
-
-GraphWidget::GraphWidget()
-{
-}
-
-GraphWidget::~GraphWidget()
-{
-}
-
-void GraphWidget::add_value(Vector<int, 1>&& value)
-{
-    m_values.enqueue(move(value));
-    update();
-}
-
-void GraphWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(event.rect());
-    painter.add_clip_rect(frame_inner_rect());
-    painter.fill_rect(event.rect(), m_background_color);
-
-    auto inner_rect = frame_inner_rect();
-    float scale = (float)inner_rect.height() / (float)m_max;
-
-    if (!m_values.is_empty()) {
-        // Draw one set of values at a time
-        for (size_t k = 0; k < m_value_format.size(); k++) {
-            const auto& format = m_value_format[k];
-            if (format.line_color == Color::Transparent && format.background_color == Color::Transparent)
-                continue;
-            m_calculated_points.clear_with_capacity();
-            for (size_t i = 0; i < m_values.size(); i++) {
-                int x = inner_rect.right() - (i * 2) + 1;
-                if (x < 0)
-                    break;
-                const auto& current_values = m_values.at(m_values.size() - i - 1);
-                if (current_values.size() <= k) {
-                    // Don't have a data point
-                    m_calculated_points.append({ -1, -1 });
-                    continue;
-                }
-                float value = current_values[k];
-                if (m_stack_values) {
-                    for (size_t l = k + 1; l < current_values.size(); l++)
-                        value += current_values[l];
-                }
-                float scaled_value = value * scale;
-                Gfx::IntPoint current_point { x, inner_rect.bottom() - (int)scaled_value };
-                m_calculated_points.append(current_point);
-            }
-            ASSERT(m_calculated_points.size() <= m_values.size());
-            if (format.background_color != Color::Transparent) {
-                // Fill the background for the area we have values for
-                Gfx::Path path;
-                size_t points_in_path = 0;
-                bool started_path = false;
-                const Gfx::IntPoint* current_point = nullptr;
-                const Gfx::IntPoint* first_point = nullptr;
-                auto check_fill_area = [&]() {
-                    if (!started_path)
-                        return;
-                    if (points_in_path > 1) {
-                        ASSERT(current_point);
-                        ASSERT(first_point);
-                        path.line_to({ current_point->x() - 1, inner_rect.bottom() + 1 });
-                        path.line_to({ first_point->x() + 1, inner_rect.bottom() + 1 });
-                        path.close();
-                        painter.fill_path(path, format.background_color, Gfx::Painter::WindingRule::EvenOdd);
-                    } else if (points_in_path == 1 && current_point) {
-                        // Can't fill any area, we only have one data point.
-                        // Just draw a vertical line as a "fill"...
-                        painter.draw_line(*current_point, { current_point->x(), inner_rect.bottom() }, format.background_color);
-                    }
-                    path = {};
-                    points_in_path = 0;
-                    first_point = nullptr;
-                    started_path = false;
-                };
-                for (size_t i = 0; i < m_calculated_points.size(); i++) {
-                    current_point = &m_calculated_points[i];
-                    if (current_point->x() < 0) {
-                        check_fill_area();
-                        continue;
-                    }
-                    if (!started_path) {
-                        path.move_to({ current_point->x() + 1, current_point->y() });
-                        points_in_path = 1;
-                        first_point = current_point;
-                        started_path = true;
-                    } else {
-                        path.line_to({ current_point->x(), current_point->y() });
-                        points_in_path++;
-                    }
-                }
-                check_fill_area();
-            }
-            if (format.line_color != Color::Transparent) {
-                // Draw the line for the data points we have
-                const Gfx::IntPoint* previous_point = nullptr;
-                for (size_t i = 0; i < m_calculated_points.size(); i++) {
-                    const auto& current_point = m_calculated_points[i];
-                    if (current_point.x() < 0) {
-                        previous_point = nullptr;
-                        continue;
-                    }
-                    if (previous_point)
-                        painter.draw_line(*previous_point, current_point, format.line_color);
-                    previous_point = &current_point;
-                }
-            }
-        }
-    }
-
-    if (!m_values.is_empty() && !m_value_format.is_empty()) {
-        const auto& current_values = m_values.last();
-        int y = 0;
-        for (size_t i = 0; i < min(m_value_format.size(), current_values.size()); i++) {
-            const auto& format = m_value_format[i];
-            if (!format.text_formatter)
-                continue;
-            auto constrain_rect = inner_rect.shrunken(8, 8);
-            auto text_rect = constrain_rect.translated(0, y).intersected(constrain_rect);
-            text_rect.set_height(font().glyph_height());
-            auto text = format.text_formatter(current_values[i]);
-            if (format.text_shadow_color != Color::Transparent)
-                painter.draw_text(text_rect.translated(1, 1), text.characters(), Gfx::TextAlignment::CenterRight, format.text_shadow_color);
-            painter.draw_text(text_rect, text.characters(), Gfx::TextAlignment::CenterRight, format.line_color);
-            y += text_rect.height() + 4;
-        }
-    }
-}
diff --git a/Applications/SystemMonitor/GraphWidget.h b/Applications/SystemMonitor/GraphWidget.h
deleted file mode 100644
index fc40f59bbd..0000000000
--- a/Applications/SystemMonitor/GraphWidget.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/CircularQueue.h>
-#include <LibGUI/Frame.h>
-
-class GraphWidget final : public GUI::Frame {
-    C_OBJECT(GraphWidget)
-public:
-    virtual ~GraphWidget() override;
-
-    void set_max(int max) { m_max = max; }
-    int max() const { return m_max; }
-
-    void add_value(Vector<int, 1>&&);
-
-    void set_background_color(Color color) { m_background_color = color; }
-
-    struct ValueFormat {
-        Color line_color { Color::Transparent };
-        Color background_color { Color::Transparent };
-        Color text_shadow_color { Color::Transparent };
-        Function<String(int)> text_formatter;
-    };
-    void set_value_format(size_t index, ValueFormat&& format)
-    {
-        if (m_value_format.size() <= index)
-            m_value_format.resize(index + 1);
-        m_value_format[index] = move(format);
-    }
-    void set_stack_values(bool stack_values) { m_stack_values = stack_values; }
-
-private:
-    explicit GraphWidget();
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-
-    int m_max { 100 };
-    Vector<ValueFormat, 1> m_value_format;
-    CircularQueue<Vector<int, 1>, 4000> m_values;
-    Color m_background_color { Color::Black };
-    bool m_stack_values { false };
-
-    Vector<Gfx::IntPoint, 1> m_calculated_points;
-};
diff --git a/Applications/SystemMonitor/InterruptsWidget.cpp b/Applications/SystemMonitor/InterruptsWidget.cpp
deleted file mode 100644
index 3e56f29ec4..0000000000
--- a/Applications/SystemMonitor/InterruptsWidget.cpp
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "InterruptsWidget.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/GroupBox.h>
-#include <LibGUI/JsonArrayModel.h>
-#include <LibGUI/SortingProxyModel.h>
-#include <LibGUI/TableView.h>
-
-InterruptsWidget::InterruptsWidget()
-{
-    on_first_show = [this](auto&) {
-        set_layout<GUI::VerticalBoxLayout>();
-        layout()->set_margins({ 4, 4, 4, 4 });
-
-        Vector<GUI::JsonArrayModel::FieldSpec> interrupts_field;
-        interrupts_field.empend("interrupt_line", "Line", Gfx::TextAlignment::CenterRight);
-        interrupts_field.empend("purpose", "Purpose", Gfx::TextAlignment::CenterLeft);
-        interrupts_field.empend("controller", "Controller", Gfx::TextAlignment::CenterLeft);
-        interrupts_field.empend("cpu_handler", "CPU Handler", Gfx::TextAlignment::CenterRight);
-        interrupts_field.empend("device_sharing", "# Devices Sharing", Gfx::TextAlignment::CenterRight);
-        interrupts_field.empend("call_count", "Call Count", Gfx::TextAlignment::CenterRight);
-
-        m_interrupt_table_view = add<GUI::TableView>();
-        m_interrupt_model = GUI::JsonArrayModel::create("/proc/interrupts", move(interrupts_field));
-        m_interrupt_table_view->set_model(GUI::SortingProxyModel::create(*m_interrupt_model));
-
-        m_update_timer = add<Core::Timer>(
-            1000, [this] {
-                update_model();
-            });
-
-        update_model();
-    };
-}
-
-InterruptsWidget::~InterruptsWidget()
-{
-}
-
-void InterruptsWidget::update_model()
-{
-    m_interrupt_table_view->model()->update();
-}
diff --git a/Applications/SystemMonitor/InterruptsWidget.h b/Applications/SystemMonitor/InterruptsWidget.h
deleted file mode 100644
index bc11215217..0000000000
--- a/Applications/SystemMonitor/InterruptsWidget.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibCore/Timer.h>
-#include <LibGUI/LazyWidget.h>
-
-class InterruptsWidget final : public GUI::LazyWidget {
-    C_OBJECT(InterruptsWidget)
-public:
-    virtual ~InterruptsWidget() override;
-
-private:
-    InterruptsWidget();
-    void update_model();
-
-    RefPtr<GUI::TableView> m_interrupt_table_view;
-    RefPtr<GUI::JsonArrayModel> m_interrupt_model;
-    RefPtr<Core::Timer> m_update_timer;
-};
diff --git a/Applications/SystemMonitor/MemoryStatsWidget.cpp b/Applications/SystemMonitor/MemoryStatsWidget.cpp
deleted file mode 100644
index 6675ea8c4a..0000000000
--- a/Applications/SystemMonitor/MemoryStatsWidget.cpp
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "MemoryStatsWidget.h"
-#include "GraphWidget.h"
-#include <AK/ByteBuffer.h>
-#include <AK/JsonObject.h>
-#include <LibCore/File.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/Painter.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/FontDatabase.h>
-#include <LibGfx/StylePainter.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-static MemoryStatsWidget* s_the;
-
-MemoryStatsWidget* MemoryStatsWidget::the()
-{
-    return s_the;
-}
-
-MemoryStatsWidget::MemoryStatsWidget(GraphWidget& graph)
-    : m_graph(graph)
-{
-    ASSERT(!s_the);
-    s_the = this;
-
-    set_fixed_height(110);
-
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins({ 0, 8, 0, 0 });
-    layout()->set_spacing(3);
-
-    auto build_widgets_for_label = [this](const String& description) -> RefPtr<GUI::Label> {
-        auto& container = add<GUI::Widget>();
-        container.set_layout<GUI::HorizontalBoxLayout>();
-        container.set_fixed_size(275, 12);
-        auto& description_label = container.add<GUI::Label>(description);
-        description_label.set_font(Gfx::FontDatabase::default_bold_font());
-        description_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-        auto& label = container.add<GUI::Label>();
-        label.set_text_alignment(Gfx::TextAlignment::CenterRight);
-        return label;
-    };
-
-    m_user_physical_pages_label = build_widgets_for_label("Physical memory:");
-    m_user_physical_pages_committed_label = build_widgets_for_label("Committed memory:");
-    m_supervisor_physical_pages_label = build_widgets_for_label("Supervisor physical:");
-    m_kmalloc_space_label = build_widgets_for_label("Kernel heap:");
-    m_kmalloc_count_label = build_widgets_for_label("Calls kmalloc:");
-    m_kfree_count_label = build_widgets_for_label("Calls kfree:");
-    m_kmalloc_difference_label = build_widgets_for_label("Difference:");
-
-    refresh();
-}
-
-MemoryStatsWidget::~MemoryStatsWidget()
-{
-}
-
-static inline size_t page_count_to_kb(size_t kb)
-{
-    return (kb * 4096) / 1024;
-}
-
-static inline size_t bytes_to_kb(size_t bytes)
-{
-    return bytes / 1024;
-}
-
-void MemoryStatsWidget::refresh()
-{
-    auto proc_memstat = Core::File::construct("/proc/memstat");
-    if (!proc_memstat->open(Core::IODevice::OpenMode::ReadOnly))
-        ASSERT_NOT_REACHED();
-
-    auto file_contents = proc_memstat->read_all();
-    auto json_result = JsonValue::from_string(file_contents);
-    ASSERT(json_result.has_value());
-    auto json = json_result.value().as_object();
-
-    [[maybe_unused]] unsigned kmalloc_eternal_allocated = json.get("kmalloc_eternal_allocated").to_u32();
-    unsigned kmalloc_allocated = json.get("kmalloc_allocated").to_u32();
-    unsigned kmalloc_available = json.get("kmalloc_available").to_u32();
-    unsigned user_physical_allocated = json.get("user_physical_allocated").to_u32();
-    unsigned user_physical_available = json.get("user_physical_available").to_u32();
-    unsigned user_physical_committed = json.get("user_physical_committed").to_u32();
-    unsigned user_physical_uncommitted = json.get("user_physical_uncommitted").to_u32();
-    unsigned super_physical_alloc = json.get("super_physical_allocated").to_u32();
-    unsigned super_physical_free = json.get("super_physical_available").to_u32();
-    unsigned kmalloc_call_count = json.get("kmalloc_call_count").to_u32();
-    unsigned kfree_call_count = json.get("kfree_call_count").to_u32();
-
-    size_t kmalloc_bytes_total = kmalloc_allocated + kmalloc_available;
-    size_t user_physical_pages_total = user_physical_allocated + user_physical_available;
-    size_t supervisor_pages_total = super_physical_alloc + super_physical_free;
-
-    size_t physical_pages_total = user_physical_pages_total + supervisor_pages_total;
-    size_t physical_pages_in_use = user_physical_allocated + super_physical_alloc;
-    size_t total_userphysical_and_swappable_pages = user_physical_allocated + user_physical_committed + user_physical_uncommitted;
-
-    m_kmalloc_space_label->set_text(String::formatted("{}K/{}K", bytes_to_kb(kmalloc_allocated), bytes_to_kb(kmalloc_bytes_total)));
-    m_user_physical_pages_label->set_text(String::formatted("{}K/{}K", page_count_to_kb(physical_pages_in_use), page_count_to_kb(physical_pages_total)));
-    m_user_physical_pages_committed_label->set_text(String::formatted("{}K", page_count_to_kb(user_physical_committed)));
-    m_supervisor_physical_pages_label->set_text(String::formatted("{}K/{}K", page_count_to_kb(super_physical_alloc), page_count_to_kb(supervisor_pages_total)));
-    m_kmalloc_count_label->set_text(String::formatted("{}", kmalloc_call_count));
-    m_kfree_count_label->set_text(String::formatted("{}", kfree_call_count));
-    m_kmalloc_difference_label->set_text(String::formatted("{:+}", kmalloc_call_count - kfree_call_count));
-
-    m_graph.set_max(page_count_to_kb(total_userphysical_and_swappable_pages) + bytes_to_kb(kmalloc_bytes_total));
-    m_graph.add_value({ (int)page_count_to_kb(user_physical_committed), (int)page_count_to_kb(user_physical_allocated), (int)bytes_to_kb(kmalloc_bytes_total) });
-}
diff --git a/Applications/SystemMonitor/MemoryStatsWidget.h b/Applications/SystemMonitor/MemoryStatsWidget.h
deleted file mode 100644
index e915730257..0000000000
--- a/Applications/SystemMonitor/MemoryStatsWidget.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Widget.h>
-
-class GraphWidget;
-
-class MemoryStatsWidget final : public GUI::Widget {
-    C_OBJECT(MemoryStatsWidget)
-public:
-    static MemoryStatsWidget* the();
-
-    virtual ~MemoryStatsWidget() override;
-
-    void refresh();
-
-private:
-    MemoryStatsWidget(GraphWidget& graph);
-
-    GraphWidget& m_graph;
-    RefPtr<GUI::Label> m_user_physical_pages_label;
-    RefPtr<GUI::Label> m_user_physical_pages_committed_label;
-    RefPtr<GUI::Label> m_supervisor_physical_pages_label;
-    RefPtr<GUI::Label> m_kmalloc_space_label;
-    RefPtr<GUI::Label> m_kmalloc_count_label;
-    RefPtr<GUI::Label> m_kfree_count_label;
-    RefPtr<GUI::Label> m_kmalloc_difference_label;
-};
diff --git a/Applications/SystemMonitor/NetworkStatisticsWidget.cpp b/Applications/SystemMonitor/NetworkStatisticsWidget.cpp
deleted file mode 100644
index 7ee2450ee1..0000000000
--- a/Applications/SystemMonitor/NetworkStatisticsWidget.cpp
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "NetworkStatisticsWidget.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/GroupBox.h>
-#include <LibGUI/JsonArrayModel.h>
-#include <LibGUI/SortingProxyModel.h>
-#include <LibGUI/TableView.h>
-
-NetworkStatisticsWidget::NetworkStatisticsWidget()
-{
-    on_first_show = [this](auto&) {
-        set_layout<GUI::VerticalBoxLayout>();
-        layout()->set_margins({ 4, 4, 4, 4 });
-        set_fill_with_background_color(true);
-
-        auto& adapters_group_box = add<GUI::GroupBox>("Adapters");
-        adapters_group_box.set_layout<GUI::VerticalBoxLayout>();
-        adapters_group_box.layout()->set_margins({ 6, 16, 6, 6 });
-        adapters_group_box.set_fixed_height(120);
-
-        m_adapter_table_view = adapters_group_box.add<GUI::TableView>();
-
-        Vector<GUI::JsonArrayModel::FieldSpec> net_adapters_fields;
-        net_adapters_fields.empend("name", "Name", Gfx::TextAlignment::CenterLeft);
-        net_adapters_fields.empend("class_name", "Class", Gfx::TextAlignment::CenterLeft);
-        net_adapters_fields.empend("mac_address", "MAC", Gfx::TextAlignment::CenterLeft);
-        net_adapters_fields.empend("ipv4_address", "IPv4", Gfx::TextAlignment::CenterLeft);
-        net_adapters_fields.empend("packets_in", "Pkt In", Gfx::TextAlignment::CenterRight);
-        net_adapters_fields.empend("packets_out", "Pkt Out", Gfx::TextAlignment::CenterRight);
-        net_adapters_fields.empend("bytes_in", "Bytes In", Gfx::TextAlignment::CenterRight);
-        net_adapters_fields.empend("bytes_out", "Bytes Out", Gfx::TextAlignment::CenterRight);
-        m_adapter_model = GUI::JsonArrayModel::create("/proc/net/adapters", move(net_adapters_fields));
-        m_adapter_table_view->set_model(GUI::SortingProxyModel::create(*m_adapter_model));
-
-        auto& sockets_group_box = add<GUI::GroupBox>("Sockets");
-        sockets_group_box.set_layout<GUI::VerticalBoxLayout>();
-        sockets_group_box.layout()->set_margins({ 6, 16, 6, 6 });
-
-        m_socket_table_view = sockets_group_box.add<GUI::TableView>();
-
-        Vector<GUI::JsonArrayModel::FieldSpec> net_tcp_fields;
-        net_tcp_fields.empend("peer_address", "Peer", Gfx::TextAlignment::CenterLeft);
-        net_tcp_fields.empend("peer_port", "Port", Gfx::TextAlignment::CenterRight);
-        net_tcp_fields.empend("local_address", "Local", Gfx::TextAlignment::CenterLeft);
-        net_tcp_fields.empend("local_port", "Port", Gfx::TextAlignment::CenterRight);
-        net_tcp_fields.empend("state", "State", Gfx::TextAlignment::CenterLeft);
-        net_tcp_fields.empend("ack_number", "Ack#", Gfx::TextAlignment::CenterRight);
-        net_tcp_fields.empend("sequence_number", "Seq#", Gfx::TextAlignment::CenterRight);
-        net_tcp_fields.empend("packets_in", "Pkt In", Gfx::TextAlignment::CenterRight);
-        net_tcp_fields.empend("packets_out", "Pkt Out", Gfx::TextAlignment::CenterRight);
-        net_tcp_fields.empend("bytes_in", "Bytes In", Gfx::TextAlignment::CenterRight);
-        net_tcp_fields.empend("bytes_out", "Bytes Out", Gfx::TextAlignment::CenterRight);
-        m_socket_model = GUI::JsonArrayModel::create("/proc/net/tcp", move(net_tcp_fields));
-        m_socket_table_view->set_model(GUI::SortingProxyModel::create(*m_socket_model));
-
-        m_update_timer = add<Core::Timer>(
-            1000, [this] {
-                update_models();
-            });
-
-        update_models();
-    };
-}
-
-NetworkStatisticsWidget::~NetworkStatisticsWidget()
-{
-}
-
-void NetworkStatisticsWidget::update_models()
-{
-    m_adapter_table_view->model()->update();
-    m_socket_table_view->model()->update();
-}
diff --git a/Applications/SystemMonitor/NetworkStatisticsWidget.h b/Applications/SystemMonitor/NetworkStatisticsWidget.h
deleted file mode 100644
index d49a9641c8..0000000000
--- a/Applications/SystemMonitor/NetworkStatisticsWidget.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibCore/Timer.h>
-#include <LibGUI/LazyWidget.h>
-
-class NetworkStatisticsWidget final : public GUI::LazyWidget {
-    C_OBJECT(NetworkStatisticsWidget)
-public:
-    virtual ~NetworkStatisticsWidget() override;
-
-private:
-    NetworkStatisticsWidget();
-    void update_models();
-
-    RefPtr<GUI::TableView> m_adapter_table_view;
-    RefPtr<GUI::TableView> m_socket_table_view;
-    RefPtr<GUI::JsonArrayModel> m_adapter_model;
-    RefPtr<GUI::JsonArrayModel> m_socket_model;
-    RefPtr<Core::Timer> m_update_timer;
-};
diff --git a/Applications/SystemMonitor/ProcessFileDescriptorMapWidget.cpp b/Applications/SystemMonitor/ProcessFileDescriptorMapWidget.cpp
deleted file mode 100644
index 48dfae098d..0000000000
--- a/Applications/SystemMonitor/ProcessFileDescriptorMapWidget.cpp
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ProcessFileDescriptorMapWidget.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/JsonArrayModel.h>
-#include <LibGUI/SortingProxyModel.h>
-#include <LibGUI/TableView.h>
-
-ProcessFileDescriptorMapWidget::ProcessFileDescriptorMapWidget()
-{
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins({ 4, 4, 4, 4 });
-    m_table_view = add<GUI::TableView>();
-
-    Vector<GUI::JsonArrayModel::FieldSpec> pid_fds_fields;
-    pid_fds_fields.empend("fd", "FD", Gfx::TextAlignment::CenterRight);
-    pid_fds_fields.empend("class", "Class", Gfx::TextAlignment::CenterLeft);
-    pid_fds_fields.empend("offset", "Offset", Gfx::TextAlignment::CenterRight);
-    pid_fds_fields.empend("absolute_path", "Path", Gfx::TextAlignment::CenterLeft);
-    pid_fds_fields.empend("Access", Gfx::TextAlignment::CenterLeft, [](auto& object) {
-        return object.get("seekable").to_bool() ? "Seekable" : "Sequential";
-    });
-    pid_fds_fields.empend("Blocking", Gfx::TextAlignment::CenterLeft, [](auto& object) {
-        return object.get("blocking").to_bool() ? "Blocking" : "Nonblocking";
-    });
-    pid_fds_fields.empend("On exec", Gfx::TextAlignment::CenterLeft, [](auto& object) {
-        return object.get("cloexec").to_bool() ? "Close" : "Keep";
-    });
-    pid_fds_fields.empend("Can read", Gfx::TextAlignment::CenterLeft, [](auto& object) {
-        return object.get("can_read").to_bool() ? "Yes" : "No";
-    });
-    pid_fds_fields.empend("Can write", Gfx::TextAlignment::CenterLeft, [](auto& object) {
-        return object.get("can_write").to_bool() ? "Yes" : "No";
-    });
-
-    m_model = GUI::JsonArrayModel::create({}, move(pid_fds_fields));
-    m_table_view->set_model(GUI::SortingProxyModel::create(*m_model));
-}
-
-ProcessFileDescriptorMapWidget::~ProcessFileDescriptorMapWidget()
-{
-}
-
-void ProcessFileDescriptorMapWidget::set_pid(pid_t pid)
-{
-    if (m_pid == pid)
-        return;
-    m_pid = pid;
-    m_model->set_json_path(String::formatted("/proc/{}/fds", m_pid));
-}
diff --git a/Applications/SystemMonitor/ProcessFileDescriptorMapWidget.h b/Applications/SystemMonitor/ProcessFileDescriptorMapWidget.h
deleted file mode 100644
index 2c45577525..0000000000
--- a/Applications/SystemMonitor/ProcessFileDescriptorMapWidget.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Widget.h>
-
-class ProcessFileDescriptorMapWidget final : public GUI::Widget {
-    C_OBJECT(ProcessFileDescriptorMapWidget);
-
-public:
-    virtual ~ProcessFileDescriptorMapWidget() override;
-
-    void set_pid(pid_t);
-
-private:
-    ProcessFileDescriptorMapWidget();
-
-    RefPtr<GUI::TableView> m_table_view;
-    RefPtr<GUI::JsonArrayModel> m_model;
-    pid_t m_pid { -1 };
-};
diff --git a/Applications/SystemMonitor/ProcessMemoryMapWidget.cpp b/Applications/SystemMonitor/ProcessMemoryMapWidget.cpp
deleted file mode 100644
index d36a7f57ab..0000000000
--- a/Applications/SystemMonitor/ProcessMemoryMapWidget.cpp
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ProcessMemoryMapWidget.h"
-#include <LibCore/Timer.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/JsonArrayModel.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/SortingProxyModel.h>
-#include <LibGUI/TableView.h>
-#include <LibGfx/Palette.h>
-
-class PagemapPaintingDelegate final : public GUI::TableCellPaintingDelegate {
-public:
-    virtual ~PagemapPaintingDelegate() override { }
-
-    virtual void paint(GUI::Painter& painter, const Gfx::IntRect& a_rect, const Gfx::Palette&, const GUI::ModelIndex& index) override
-    {
-        auto rect = a_rect.shrunken(2, 2);
-        auto pagemap = index.data(GUI::ModelRole::Custom).to_string();
-
-        float scale_factor = (float)pagemap.length() / (float)rect.width();
-
-        for (int i = 0; i < rect.width(); ++i) {
-            int x = rect.x() + i;
-            char c = pagemap[(float)i * scale_factor];
-            Color color;
-            if (c == 'N') // Null (no page at all, typically an inode-backed page that hasn't been paged in.)
-                color = Color::White;
-            else if (c == 'Z') // Zero (globally shared zero page, typically an untouched anonymous page.)
-                color = Color::from_rgb(0xc0c0ff);
-            else if (c == 'P') // Physical (a resident page)
-                color = Color::Black;
-            else
-                ASSERT_NOT_REACHED();
-
-            painter.draw_line({ x, rect.top() }, { x, rect.bottom() }, color);
-        }
-
-        painter.draw_rect(rect, Color::Black);
-    }
-};
-
-ProcessMemoryMapWidget::ProcessMemoryMapWidget()
-{
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins({ 4, 4, 4, 4 });
-    m_table_view = add<GUI::TableView>();
-    Vector<GUI::JsonArrayModel::FieldSpec> pid_vm_fields;
-    pid_vm_fields.empend(
-        "Address", Gfx::TextAlignment::CenterLeft,
-        [](auto& object) { return String::formatted("{:#x}", object.get("address").to_u32()); },
-        [](auto& object) { return object.get("address").to_u32(); });
-    pid_vm_fields.empend("size", "Size", Gfx::TextAlignment::CenterRight);
-    pid_vm_fields.empend("amount_resident", "Resident", Gfx::TextAlignment::CenterRight);
-    pid_vm_fields.empend("amount_dirty", "Dirty", Gfx::TextAlignment::CenterRight);
-    pid_vm_fields.empend("Access", Gfx::TextAlignment::CenterLeft, [](auto& object) {
-        StringBuilder builder;
-        if (!object.get("user_accessible").to_bool())
-            builder.append('K');
-        if (object.get("readable").to_bool())
-            builder.append('R');
-        if (object.get("writable").to_bool())
-            builder.append('W');
-        if (object.get("executable").to_bool())
-            builder.append('X');
-        if (object.get("shared").to_bool())
-            builder.append('S');
-        if (object.get("stack").to_bool())
-            builder.append('T');
-        return builder.to_string();
-    });
-    pid_vm_fields.empend("vmobject", "VMObject type", Gfx::TextAlignment::CenterLeft);
-    pid_vm_fields.empend("Purgeable", Gfx::TextAlignment::CenterLeft, [](auto& object) {
-        if (object.get("volatile").to_bool())
-            return "Volatile";
-        return "Non-volatile";
-    });
-    pid_vm_fields.empend(
-        "Page map", Gfx::TextAlignment::CenterLeft,
-        [](auto&) {
-            return GUI::Variant();
-        },
-        [](auto&) {
-            return GUI::Variant(0);
-        },
-        [](const JsonObject& object) {
-            auto pagemap = object.get("pagemap").as_string_or({});
-            return pagemap;
-        });
-    pid_vm_fields.empend("cow_pages", "# CoW", Gfx::TextAlignment::CenterRight);
-    pid_vm_fields.empend("name", "Name", Gfx::TextAlignment::CenterLeft);
-    m_json_model = GUI::JsonArrayModel::create({}, move(pid_vm_fields));
-    m_table_view->set_model(GUI::SortingProxyModel::create(*m_json_model));
-
-    m_table_view->set_column_painting_delegate(7, make<PagemapPaintingDelegate>());
-
-    m_table_view->set_key_column_and_sort_order(0, GUI::SortOrder::Ascending);
-    m_timer = add<Core::Timer>(1000, [this] { refresh(); });
-}
-
-ProcessMemoryMapWidget::~ProcessMemoryMapWidget()
-{
-}
-
-void ProcessMemoryMapWidget::set_pid(pid_t pid)
-{
-    if (m_pid == pid)
-        return;
-    m_pid = pid;
-    m_json_model->set_json_path(String::formatted("/proc/{}/vm", pid));
-}
-
-void ProcessMemoryMapWidget::refresh()
-{
-    if (m_pid != -1)
-        m_json_model->update();
-}
diff --git a/Applications/SystemMonitor/ProcessMemoryMapWidget.h b/Applications/SystemMonitor/ProcessMemoryMapWidget.h
deleted file mode 100644
index 71a554fe51..0000000000
--- a/Applications/SystemMonitor/ProcessMemoryMapWidget.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Widget.h>
-
-class ProcessMemoryMapWidget final : public GUI::Widget {
-    C_OBJECT(ProcessMemoryMapWidget);
-
-public:
-    virtual ~ProcessMemoryMapWidget() override;
-
-    void set_pid(pid_t);
-    void refresh();
-
-private:
-    ProcessMemoryMapWidget();
-    RefPtr<GUI::TableView> m_table_view;
-    RefPtr<GUI::JsonArrayModel> m_json_model;
-    pid_t m_pid { -1 };
-    RefPtr<Core::Timer> m_timer;
-};
diff --git a/Applications/SystemMonitor/ProcessModel.cpp b/Applications/SystemMonitor/ProcessModel.cpp
deleted file mode 100644
index c12a5503ab..0000000000
--- a/Applications/SystemMonitor/ProcessModel.cpp
+++ /dev/null
@@ -1,454 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ProcessModel.h"
-#include "GraphWidget.h"
-#include <AK/JsonArray.h>
-#include <AK/JsonObject.h>
-#include <AK/JsonValue.h>
-#include <AK/SharedBuffer.h>
-#include <LibCore/File.h>
-#include <LibCore/ProcessStatisticsReader.h>
-#include <LibGUI/FileIconProvider.h>
-#include <fcntl.h>
-#include <stdio.h>
-
-static ProcessModel* s_the;
-
-ProcessModel& ProcessModel::the()
-{
-    ASSERT(s_the);
-    return *s_the;
-}
-
-ProcessModel::ProcessModel()
-{
-    ASSERT(!s_the);
-    s_the = this;
-    m_generic_process_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/gear.png");
-    m_high_priority_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/highpriority.png");
-    m_low_priority_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/lowpriority.png");
-    m_normal_priority_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/normalpriority.png");
-
-    auto file = Core::File::construct("/proc/cpuinfo");
-    if (file->open(Core::IODevice::ReadOnly)) {
-        auto json = JsonValue::from_string({ file->read_all() });
-        auto cpuinfo_array = json.value().as_array();
-        cpuinfo_array.for_each([&](auto& value) {
-            auto& cpu_object = value.as_object();
-            auto cpu_id = cpu_object.get("processor").as_u32();
-            m_cpus.append(make<CpuInfo>(cpu_id));
-        });
-    }
-
-    if (m_cpus.is_empty())
-        m_cpus.append(make<CpuInfo>(0));
-}
-
-ProcessModel::~ProcessModel()
-{
-}
-
-int ProcessModel::row_count(const GUI::ModelIndex&) const
-{
-    return m_pids.size();
-}
-
-int ProcessModel::column_count(const GUI::ModelIndex&) const
-{
-    return Column::__Count;
-}
-
-String ProcessModel::column_name(int column) const
-{
-    switch (column) {
-    case Column::Icon:
-        return "";
-    case Column::PID:
-        return "PID";
-    case Column::TID:
-        return "TID";
-    case Column::PPID:
-        return "PPID";
-    case Column::PGID:
-        return "PGID";
-    case Column::SID:
-        return "SID";
-    case Column::State:
-        return "State";
-    case Column::User:
-        return "User";
-    case Column::Priority:
-        return "Pr";
-    case Column::EffectivePriority:
-        return "EPr";
-    case Column::Virtual:
-        return "Virtual";
-    case Column::Physical:
-        return "Physical";
-    case Column::DirtyPrivate:
-        return "DirtyP";
-    case Column::CleanInode:
-        return "CleanI";
-    case Column::PurgeableVolatile:
-        return "Purg:V";
-    case Column::PurgeableNonvolatile:
-        return "Purg:N";
-    case Column::CPU:
-        return "CPU";
-    case Column::Processor:
-        return "Processor";
-    case Column::Name:
-        return "Name";
-    case Column::Syscalls:
-        return "Syscalls";
-    case Column::InodeFaults:
-        return "F:Inode";
-    case Column::ZeroFaults:
-        return "F:Zero";
-    case Column::CowFaults:
-        return "F:CoW";
-    case Column::IPv4SocketReadBytes:
-        return "IPv4 In";
-    case Column::IPv4SocketWriteBytes:
-        return "IPv4 Out";
-    case Column::UnixSocketReadBytes:
-        return "Unix In";
-    case Column::UnixSocketWriteBytes:
-        return "Unix Out";
-    case Column::FileReadBytes:
-        return "File In";
-    case Column::FileWriteBytes:
-        return "File Out";
-    case Column::Pledge:
-        return "Pledge";
-    case Column::Veil:
-        return "Veil";
-    default:
-        ASSERT_NOT_REACHED();
-    }
-}
-
-static String pretty_byte_size(size_t size)
-{
-    return String::formatted("{}K", size / 1024);
-}
-
-GUI::Variant ProcessModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
-{
-    ASSERT(is_valid(index));
-
-    if (role == GUI::ModelRole::TextAlignment) {
-        switch (index.column()) {
-        case Column::Icon:
-        case Column::Name:
-        case Column::State:
-        case Column::User:
-        case Column::Pledge:
-        case Column::Veil:
-            return Gfx::TextAlignment::CenterLeft;
-        case Column::PID:
-        case Column::TID:
-        case Column::PPID:
-        case Column::PGID:
-        case Column::SID:
-        case Column::Priority:
-        case Column::EffectivePriority:
-        case Column::Virtual:
-        case Column::Physical:
-        case Column::DirtyPrivate:
-        case Column::CleanInode:
-        case Column::PurgeableVolatile:
-        case Column::PurgeableNonvolatile:
-        case Column::CPU:
-        case Column::Processor:
-        case Column::Syscalls:
-        case Column::InodeFaults:
-        case Column::ZeroFaults:
-        case Column::CowFaults:
-        case Column::FileReadBytes:
-        case Column::FileWriteBytes:
-        case Column::UnixSocketReadBytes:
-        case Column::UnixSocketWriteBytes:
-        case Column::IPv4SocketReadBytes:
-        case Column::IPv4SocketWriteBytes:
-            return Gfx::TextAlignment::CenterRight;
-        default:
-            ASSERT_NOT_REACHED();
-        }
-    }
-
-    auto it = m_threads.find(m_pids[index.row()]);
-    auto& thread = *(*it).value;
-
-    if (role == GUI::ModelRole::Sort) {
-        switch (index.column()) {
-        case Column::Icon:
-            return 0;
-        case Column::PID:
-            return thread.current_state.pid;
-        case Column::TID:
-            return thread.current_state.tid;
-        case Column::PPID:
-            return thread.current_state.ppid;
-        case Column::PGID:
-            return thread.current_state.pgid;
-        case Column::SID:
-            return thread.current_state.sid;
-        case Column::State:
-            return thread.current_state.state;
-        case Column::User:
-            return thread.current_state.user;
-        case Column::Priority:
-            return thread.current_state.priority;
-        case Column::EffectivePriority:
-            return thread.current_state.effective_priority;
-        case Column::Virtual:
-            return (int)thread.current_state.amount_virtual;
-        case Column::Physical:
-            return (int)thread.current_state.amount_resident;
-        case Column::DirtyPrivate:
-            return (int)thread.current_state.amount_dirty_private;
-        case Column::CleanInode:
-            return (int)thread.current_state.amount_clean_inode;
-        case Column::PurgeableVolatile:
-            return (int)thread.current_state.amount_purgeable_volatile;
-        case Column::PurgeableNonvolatile:
-            return (int)thread.current_state.amount_purgeable_nonvolatile;
-        case Column::CPU:
-            return thread.current_state.cpu_percent;
-        case Column::Processor:
-            return thread.current_state.cpu;
-        case Column::Name:
-            return thread.current_state.name;
-        case Column::Syscalls:
-            return thread.current_state.syscall_count;
-        case Column::InodeFaults:
-            return thread.current_state.inode_faults;
-        case Column::ZeroFaults:
-            return thread.current_state.zero_faults;
-        case Column::CowFaults:
-            return thread.current_state.cow_faults;
-        case Column::IPv4SocketReadBytes:
-            return thread.current_state.ipv4_socket_read_bytes;
-        case Column::IPv4SocketWriteBytes:
-            return thread.current_state.ipv4_socket_write_bytes;
-        case Column::UnixSocketReadBytes:
-            return thread.current_state.unix_socket_read_bytes;
-        case Column::UnixSocketWriteBytes:
-            return thread.current_state.unix_socket_write_bytes;
-        case Column::FileReadBytes:
-            return thread.current_state.file_read_bytes;
-        case Column::FileWriteBytes:
-            return thread.current_state.file_write_bytes;
-        case Column::Pledge:
-            return thread.current_state.pledge;
-        case Column::Veil:
-            return thread.current_state.veil;
-        }
-        ASSERT_NOT_REACHED();
-        return {};
-    }
-
-    if (role == GUI::ModelRole::Display) {
-        switch (index.column()) {
-        case Column::Icon: {
-            auto icon = GUI::FileIconProvider::icon_for_executable(thread.current_state.executable);
-            if (auto* bitmap = icon.bitmap_for_size(16))
-                return *bitmap;
-            return *m_generic_process_icon;
-        }
-        case Column::PID:
-            return thread.current_state.pid;
-        case Column::TID:
-            return thread.current_state.tid;
-        case Column::PPID:
-            return thread.current_state.ppid;
-        case Column::PGID:
-            return thread.current_state.pgid;
-        case Column::SID:
-            return thread.current_state.sid;
-        case Column::State:
-            return thread.current_state.state;
-        case Column::User:
-            return thread.current_state.user;
-        case Column::Priority:
-            return thread.current_state.priority;
-        case Column::EffectivePriority:
-            return thread.current_state.effective_priority;
-        case Column::Virtual:
-            return pretty_byte_size(thread.current_state.amount_virtual);
-        case Column::Physical:
-            return pretty_byte_size(thread.current_state.amount_resident);
-        case Column::DirtyPrivate:
-            return pretty_byte_size(thread.current_state.amount_dirty_private);
-        case Column::CleanInode:
-            return pretty_byte_size(thread.current_state.amount_clean_inode);
-        case Column::PurgeableVolatile:
-            return pretty_byte_size(thread.current_state.amount_purgeable_volatile);
-        case Column::PurgeableNonvolatile:
-            return pretty_byte_size(thread.current_state.amount_purgeable_nonvolatile);
-        case Column::CPU:
-            return thread.current_state.cpu_percent;
-        case Column::Processor:
-            return thread.current_state.cpu;
-        case Column::Name:
-            return thread.current_state.name;
-        case Column::Syscalls:
-            return thread.current_state.syscall_count;
-        case Column::InodeFaults:
-            return thread.current_state.inode_faults;
-        case Column::ZeroFaults:
-            return thread.current_state.zero_faults;
-        case Column::CowFaults:
-            return thread.current_state.cow_faults;
-        case Column::IPv4SocketReadBytes:
-            return thread.current_state.ipv4_socket_read_bytes;
-        case Column::IPv4SocketWriteBytes:
-            return thread.current_state.ipv4_socket_write_bytes;
-        case Column::UnixSocketReadBytes:
-            return thread.current_state.unix_socket_read_bytes;
-        case Column::UnixSocketWriteBytes:
-            return thread.current_state.unix_socket_write_bytes;
-        case Column::FileReadBytes:
-            return thread.current_state.file_read_bytes;
-        case Column::FileWriteBytes:
-            return thread.current_state.file_write_bytes;
-        case Column::Pledge:
-            return thread.current_state.pledge;
-        case Column::Veil:
-            return thread.current_state.veil;
-        }
-    }
-
-    return {};
-}
-
-void ProcessModel::update()
-{
-    auto previous_pid_count = m_pids.size();
-    auto all_processes = Core::ProcessStatisticsReader::get_all(m_proc_all);
-
-    u64 last_sum_ticks_scheduled = 0, last_sum_ticks_scheduled_kernel = 0;
-    for (auto& it : m_threads) {
-        auto& current_state = it.value->current_state;
-        last_sum_ticks_scheduled += current_state.ticks_user + current_state.ticks_kernel;
-        last_sum_ticks_scheduled_kernel += current_state.ticks_kernel;
-    }
-
-    HashTable<PidAndTid> live_pids;
-    u64 sum_ticks_scheduled = 0, sum_ticks_scheduled_kernel = 0;
-    if (all_processes.has_value()) {
-        for (auto& it : all_processes.value()) {
-            for (auto& thread : it.value.threads) {
-                ThreadState state;
-                state.pid = it.value.pid;
-                state.user = it.value.username;
-                state.pledge = it.value.pledge;
-                state.veil = it.value.veil;
-                state.syscall_count = thread.syscall_count;
-                state.inode_faults = thread.inode_faults;
-                state.zero_faults = thread.zero_faults;
-                state.cow_faults = thread.cow_faults;
-                state.unix_socket_read_bytes = thread.unix_socket_read_bytes;
-                state.unix_socket_write_bytes = thread.unix_socket_write_bytes;
-                state.ipv4_socket_read_bytes = thread.ipv4_socket_read_bytes;
-                state.ipv4_socket_write_bytes = thread.ipv4_socket_write_bytes;
-                state.file_read_bytes = thread.file_read_bytes;
-                state.file_write_bytes = thread.file_write_bytes;
-                state.amount_virtual = it.value.amount_virtual;
-                state.amount_resident = it.value.amount_resident;
-                state.amount_dirty_private = it.value.amount_dirty_private;
-                state.amount_clean_inode = it.value.amount_clean_inode;
-                state.amount_purgeable_volatile = it.value.amount_purgeable_volatile;
-                state.amount_purgeable_nonvolatile = it.value.amount_purgeable_nonvolatile;
-
-                state.name = thread.name;
-                state.executable = it.value.executable;
-
-                state.ppid = it.value.ppid;
-                state.tid = thread.tid;
-                state.pgid = it.value.pgid;
-                state.sid = it.value.sid;
-                state.times_scheduled = thread.times_scheduled;
-                state.ticks_user = thread.ticks_user;
-                state.ticks_kernel = thread.ticks_kernel;
-                state.cpu = thread.cpu;
-                state.cpu_percent = 0;
-                state.priority = thread.priority;
-                state.effective_priority = thread.effective_priority;
-                state.state = thread.state;
-                sum_ticks_scheduled += thread.ticks_user + thread.ticks_kernel;
-                sum_ticks_scheduled_kernel += thread.ticks_kernel;
-                {
-                    auto pit = m_threads.find({ it.value.pid, thread.tid });
-                    if (pit == m_threads.end())
-                        m_threads.set({ it.value.pid, thread.tid }, make<Thread>());
-                }
-                auto pit = m_threads.find({ it.value.pid, thread.tid });
-                ASSERT(pit != m_threads.end());
-                (*pit).value->previous_state = (*pit).value->current_state;
-                (*pit).value->current_state = state;
-
-                live_pids.set({ it.value.pid, thread.tid });
-            }
-        }
-    }
-
-    m_pids.clear();
-    for (auto& c : m_cpus) {
-        c.total_cpu_percent = 0.0;
-        c.total_cpu_percent_kernel = 0.0;
-    }
-    Vector<PidAndTid, 16> pids_to_remove;
-    for (auto& it : m_threads) {
-        if (!live_pids.contains(it.key)) {
-            pids_to_remove.append(it.key);
-            continue;
-        }
-        auto& process = *it.value;
-        u32 ticks_scheduled_diff = (process.current_state.ticks_user + process.current_state.ticks_kernel)
-            - (process.previous_state.ticks_user + process.previous_state.ticks_kernel);
-        u32 ticks_scheduled_diff_kernel = process.current_state.ticks_kernel - process.previous_state.ticks_kernel;
-        process.current_state.cpu_percent = ((float)ticks_scheduled_diff * 100) / (float)(sum_ticks_scheduled - last_sum_ticks_scheduled);
-        process.current_state.cpu_percent_kernel = ((float)ticks_scheduled_diff_kernel * 100) / (float)(sum_ticks_scheduled - last_sum_ticks_scheduled);
-        if (it.key.pid != 0) {
-            auto& cpu_info = m_cpus[process.current_state.cpu];
-            cpu_info.total_cpu_percent += process.current_state.cpu_percent;
-            cpu_info.total_cpu_percent_kernel += process.current_state.cpu_percent_kernel;
-            m_pids.append(it.key);
-        }
-    }
-    for (auto pid : pids_to_remove)
-        m_threads.remove(pid);
-
-    if (on_cpu_info_change)
-        on_cpu_info_change(m_cpus);
-
-    // FIXME: This is a rather hackish way of invalidating indexes.
-    //        It would be good if GUI::Model had a way to orchestrate removal/insertion while preserving indexes.
-    did_update(previous_pid_count == m_pids.size() ? GUI::Model::UpdateFlag::DontInvalidateIndexes : GUI::Model::UpdateFlag::InvalidateAllIndexes);
-}
diff --git a/Applications/SystemMonitor/ProcessModel.h b/Applications/SystemMonitor/ProcessModel.h
deleted file mode 100644
index 11f39cac76..0000000000
--- a/Applications/SystemMonitor/ProcessModel.h
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/HashMap.h>
-#include <AK/NonnullOwnPtrVector.h>
-#include <AK/String.h>
-#include <AK/Vector.h>
-#include <LibGUI/Model.h>
-#include <unistd.h>
-
-class GraphWidget;
-
-struct PidAndTid {
-    bool operator==(const PidAndTid& other) const
-    {
-        return pid == other.pid && tid == other.tid;
-    }
-    pid_t pid;
-    int tid;
-};
-
-class ProcessModel final : public GUI::Model {
-public:
-    enum Column {
-        Icon = 0,
-        Name,
-        CPU,
-        Processor,
-        State,
-        Priority,
-        EffectivePriority,
-        User,
-        PID,
-        TID,
-        PPID,
-        PGID,
-        SID,
-        Virtual,
-        Physical,
-        DirtyPrivate,
-        CleanInode,
-        PurgeableVolatile,
-        PurgeableNonvolatile,
-        Veil,
-        Pledge,
-        Syscalls,
-        InodeFaults,
-        ZeroFaults,
-        CowFaults,
-        FileReadBytes,
-        FileWriteBytes,
-        UnixSocketReadBytes,
-        UnixSocketWriteBytes,
-        IPv4SocketReadBytes,
-        IPv4SocketWriteBytes,
-        __Count
-    };
-
-    static ProcessModel& the();
-
-    static NonnullRefPtr<ProcessModel> create() { return adopt(*new ProcessModel); }
-    virtual ~ProcessModel() override;
-
-    virtual int row_count(const GUI::ModelIndex&) const override;
-    virtual int column_count(const GUI::ModelIndex&) const override;
-    virtual String column_name(int column) const override;
-    virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
-    virtual void update() override;
-
-    struct CpuInfo {
-        u32 id;
-        float total_cpu_percent { 0.0 };
-        float total_cpu_percent_kernel { 0.0 };
-
-        CpuInfo(u32 id)
-            : id(id)
-        {
-        }
-    };
-
-    Function<void(const NonnullOwnPtrVector<CpuInfo>&)> on_cpu_info_change;
-
-    const NonnullOwnPtrVector<CpuInfo>& cpus() const { return m_cpus; }
-
-private:
-    ProcessModel();
-
-    struct ThreadState {
-        pid_t tid;
-        pid_t pid;
-        pid_t ppid;
-        pid_t pgid;
-        pid_t sid;
-        unsigned times_scheduled;
-        unsigned ticks_user;
-        unsigned ticks_kernel;
-        String executable;
-        String name;
-        String state;
-        String user;
-        String pledge;
-        String veil;
-        u32 cpu;
-        u32 priority;
-        u32 effective_priority;
-        size_t amount_virtual;
-        size_t amount_resident;
-        size_t amount_dirty_private;
-        size_t amount_clean_inode;
-        size_t amount_purgeable_volatile;
-        size_t amount_purgeable_nonvolatile;
-        unsigned syscall_count;
-        unsigned inode_faults;
-        unsigned zero_faults;
-        unsigned cow_faults;
-        unsigned unix_socket_read_bytes;
-        unsigned unix_socket_write_bytes;
-        unsigned ipv4_socket_read_bytes;
-        unsigned ipv4_socket_write_bytes;
-        unsigned file_read_bytes;
-        unsigned file_write_bytes;
-        float cpu_percent;
-        float cpu_percent_kernel;
-    };
-
-    struct Thread {
-        ThreadState current_state;
-        ThreadState previous_state;
-    };
-
-    HashMap<uid_t, String> m_usernames;
-    HashMap<PidAndTid, NonnullOwnPtr<Thread>> m_threads;
-    NonnullOwnPtrVector<CpuInfo> m_cpus;
-    Vector<PidAndTid> m_pids;
-    RefPtr<Gfx::Bitmap> m_generic_process_icon;
-    RefPtr<Gfx::Bitmap> m_high_priority_icon;
-    RefPtr<Gfx::Bitmap> m_low_priority_icon;
-    RefPtr<Gfx::Bitmap> m_normal_priority_icon;
-    RefPtr<Core::File> m_proc_all;
-};
-
-namespace AK {
-template<>
-struct Traits<PidAndTid> : public GenericTraits<PidAndTid> {
-    static unsigned hash(const PidAndTid& value) { return pair_int_hash(value.pid, value.tid); }
-};
-}
diff --git a/Applications/SystemMonitor/ProcessUnveiledPathsWidget.cpp b/Applications/SystemMonitor/ProcessUnveiledPathsWidget.cpp
deleted file mode 100644
index 9e2d22443c..0000000000
--- a/Applications/SystemMonitor/ProcessUnveiledPathsWidget.cpp
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ProcessUnveiledPathsWidget.h"
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/JsonArrayModel.h>
-#include <LibGUI/SortingProxyModel.h>
-#include <LibGUI/TableView.h>
-
-ProcessUnveiledPathsWidget::ProcessUnveiledPathsWidget()
-{
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins({ 4, 4, 4, 4 });
-    m_table_view = add<GUI::TableView>();
-
-    Vector<GUI::JsonArrayModel::FieldSpec> pid_unveil_fields;
-    pid_unveil_fields.empend("path", "Path", Gfx::TextAlignment::CenterLeft);
-    pid_unveil_fields.empend("permissions", "Permissions", Gfx::TextAlignment::CenterLeft);
-
-    m_model = GUI::JsonArrayModel::create({}, move(pid_unveil_fields));
-    m_table_view->set_model(GUI::SortingProxyModel::create(*m_model));
-}
-
-ProcessUnveiledPathsWidget::~ProcessUnveiledPathsWidget()
-{
-}
-
-void ProcessUnveiledPathsWidget::set_pid(pid_t pid)
-{
-    if (m_pid == pid)
-        return;
-    m_pid = pid;
-    m_model->set_json_path(String::formatted("/proc/{}/unveil", m_pid));
-}
diff --git a/Applications/SystemMonitor/ProcessUnveiledPathsWidget.h b/Applications/SystemMonitor/ProcessUnveiledPathsWidget.h
deleted file mode 100644
index d1eac898b2..0000000000
--- a/Applications/SystemMonitor/ProcessUnveiledPathsWidget.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Widget.h>
-
-class ProcessUnveiledPathsWidget final : public GUI::Widget {
-    C_OBJECT(ProcessUnveiledPathsWidget);
-
-public:
-    virtual ~ProcessUnveiledPathsWidget() override;
-
-    void set_pid(pid_t);
-
-private:
-    ProcessUnveiledPathsWidget();
-
-    RefPtr<GUI::TableView> m_table_view;
-    RefPtr<GUI::JsonArrayModel> m_model;
-    pid_t m_pid { -1 };
-};
diff --git a/Applications/SystemMonitor/ThreadStackWidget.cpp b/Applications/SystemMonitor/ThreadStackWidget.cpp
deleted file mode 100644
index 01e37791a0..0000000000
--- a/Applications/SystemMonitor/ThreadStackWidget.cpp
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "ThreadStackWidget.h"
-#include <AK/ByteBuffer.h>
-#include <LibCore/File.h>
-#include <LibCore/Timer.h>
-#include <LibGUI/BoxLayout.h>
-
-ThreadStackWidget::ThreadStackWidget()
-{
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins({ 4, 4, 4, 4 });
-    m_stack_editor = add<GUI::TextEditor>();
-    m_stack_editor->set_mode(GUI::TextEditor::ReadOnly);
-
-    m_timer = add<Core::Timer>(1000, [this] { refresh(); });
-}
-
-ThreadStackWidget::~ThreadStackWidget()
-{
-}
-
-void ThreadStackWidget::set_ids(pid_t pid, pid_t tid)
-{
-    if (m_pid == pid && m_tid == tid)
-        return;
-    m_pid = pid;
-    m_tid = tid;
-    refresh();
-}
-
-void ThreadStackWidget::refresh()
-{
-    auto file = Core::File::construct(String::formatted("/proc/{}/stacks/{}", m_pid, m_tid));
-    if (!file->open(Core::IODevice::ReadOnly)) {
-        m_stack_editor->set_text(String::formatted("Unable to open {}", file->filename()));
-        return;
-    }
-
-    auto new_text = file->read_all();
-    if (m_stack_editor->text() != new_text) {
-        m_stack_editor->set_text(new_text);
-    }
-}
diff --git a/Applications/SystemMonitor/ThreadStackWidget.h b/Applications/SystemMonitor/ThreadStackWidget.h
deleted file mode 100644
index 5a10e93b0a..0000000000
--- a/Applications/SystemMonitor/ThreadStackWidget.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/TextEditor.h>
-#include <LibGUI/Widget.h>
-
-class ThreadStackWidget final : public GUI::Widget {
-    C_OBJECT(ThreadStackWidget)
-public:
-    virtual ~ThreadStackWidget() override;
-
-    void set_ids(pid_t pid, pid_t tid);
-    void refresh();
-
-private:
-    ThreadStackWidget();
-
-    pid_t m_pid { -1 };
-    pid_t m_tid { -1 };
-    RefPtr<GUI::TextEditor> m_stack_editor;
-    RefPtr<Core::Timer> m_timer;
-};
diff --git a/Applications/SystemMonitor/main.cpp b/Applications/SystemMonitor/main.cpp
deleted file mode 100644
index bdf88e44d1..0000000000
--- a/Applications/SystemMonitor/main.cpp
+++ /dev/null
@@ -1,670 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "DevicesModel.h"
-#include "GraphWidget.h"
-#include "InterruptsWidget.h"
-#include "MemoryStatsWidget.h"
-#include "NetworkStatisticsWidget.h"
-#include "ProcessFileDescriptorMapWidget.h"
-#include "ProcessMemoryMapWidget.h"
-#include "ProcessModel.h"
-#include "ProcessUnveiledPathsWidget.h"
-#include "ThreadStackWidget.h"
-#include <AK/NumberFormat.h>
-#include <LibCore/ArgsParser.h>
-#include <LibCore/Timer.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/ActionGroup.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/GroupBox.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/JsonArrayModel.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/LazyWidget.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/SortingProxyModel.h>
-#include <LibGUI/Splitter.h>
-#include <LibGUI/TabWidget.h>
-#include <LibGUI/TableView.h>
-#include <LibGUI/ToolBar.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Palette.h>
-#include <LibPCIDB/Database.h>
-#include <serenity.h>
-#include <signal.h>
-#include <spawn.h>
-#include <stdio.h>
-#include <unistd.h>
-
-static NonnullRefPtr<GUI::Widget> build_file_systems_tab();
-static NonnullRefPtr<GUI::Widget> build_pci_devices_tab();
-static NonnullRefPtr<GUI::Widget> build_devices_tab();
-static NonnullRefPtr<GUI::Widget> build_graphs_tab();
-static NonnullRefPtr<GUI::Widget> build_processors_tab();
-
-class UnavailableProcessWidget final : public GUI::Frame {
-    C_OBJECT(UnavailableProcessWidget)
-public:
-    virtual ~UnavailableProcessWidget() override { }
-
-    const String& text() const { return m_text; }
-    void set_text(String text) { m_text = move(text); }
-
-private:
-    UnavailableProcessWidget(String text)
-        : m_text(move(text))
-    {
-    }
-
-    virtual void paint_event(GUI::PaintEvent& event) override
-    {
-        Frame::paint_event(event);
-        if (text().is_empty())
-            return;
-        GUI::Painter painter(*this);
-        painter.add_clip_rect(event.rect());
-        painter.draw_text(frame_inner_rect(), text(), Gfx::TextAlignment::Center, palette().window_text(), Gfx::TextElision::Right);
-    }
-
-    String m_text;
-};
-
-static bool can_access_pid(pid_t pid)
-{
-    auto path = String::formatted("/proc/{}", pid);
-    return access(path.characters(), X_OK) == 0;
-}
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio proc shared_buffer accept rpath exec unix cpath fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio proc shared_buffer accept rpath exec", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/etc/passwd", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/proc", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/dev", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/bin", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/bin/Profiler", "rx") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/bin/Inspector", "rx") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    unveil(nullptr, nullptr);
-
-    const char* args_tab = "processes";
-    Core::ArgsParser parser;
-    parser.add_option(args_tab, "Tab, one of 'processes', 'graphs', 'fs', 'pci', 'devices', 'network', 'processors' or 'interrupts'", "open-tab", 't', "tab");
-    parser.parse(argc, argv);
-    StringView args_tab_view = args_tab;
-
-    auto app_icon = GUI::Icon::default_icon("app-system-monitor");
-
-    auto window = GUI::Window::construct();
-    window->set_title("System Monitor");
-    window->resize(680, 400);
-
-    auto& keeper = window->set_main_widget<GUI::Widget>();
-    keeper.set_layout<GUI::VerticalBoxLayout>();
-    keeper.set_fill_with_background_color(true);
-    keeper.layout()->set_margins({ 2, 2, 2, 2 });
-
-    auto& tabwidget = keeper.add<GUI::TabWidget>();
-
-    auto process_container_splitter = GUI::VerticalSplitter::construct();
-    tabwidget.add_widget("Processes", process_container_splitter);
-    process_container_splitter->layout()->set_margins({ 4, 4, 4, 4 });
-
-    auto& process_table_container = process_container_splitter->add<GUI::Widget>();
-
-    auto graphs_widget = build_graphs_tab();
-    tabwidget.add_widget("Graphs", graphs_widget);
-
-    auto file_systems_widget = build_file_systems_tab();
-    tabwidget.add_widget("File systems", file_systems_widget);
-
-    auto pci_devices_widget = build_pci_devices_tab();
-    tabwidget.add_widget("PCI devices", pci_devices_widget);
-
-    auto devices_widget = build_devices_tab();
-    tabwidget.add_widget("Devices", devices_widget);
-
-    auto network_stats_widget = NetworkStatisticsWidget::construct();
-    tabwidget.add_widget("Network", network_stats_widget);
-
-    auto processors_widget = build_processors_tab();
-    tabwidget.add_widget("Processors", processors_widget);
-
-    auto interrupts_widget = InterruptsWidget::construct();
-    tabwidget.add_widget("Interrupts", interrupts_widget);
-
-    process_table_container.set_layout<GUI::VerticalBoxLayout>();
-    process_table_container.layout()->set_spacing(0);
-
-    auto& process_table_view = process_table_container.add<GUI::TableView>();
-    process_table_view.set_column_headers_visible(true);
-    process_table_view.set_model(GUI::SortingProxyModel::create(ProcessModel::create()));
-    process_table_view.set_key_column_and_sort_order(ProcessModel::Column::CPU, GUI::SortOrder::Descending);
-    process_table_view.model()->update();
-
-    auto& refresh_timer = window->add<Core::Timer>(
-        3000, [&] {
-            process_table_view.model()->update();
-            if (auto* memory_stats_widget = MemoryStatsWidget::the())
-                memory_stats_widget->refresh();
-        });
-
-    auto selected_id = [&](ProcessModel::Column column) -> pid_t {
-        if (process_table_view.selection().is_empty())
-            return -1;
-        auto pid_index = process_table_view.model()->index(process_table_view.selection().first().row(), column);
-        return pid_index.data().to_i32();
-    };
-
-    auto kill_action = GUI::Action::create("Kill process", { Mod_Ctrl, Key_K }, Gfx::Bitmap::load_from_file("/res/icons/16x16/kill.png"), [&](const GUI::Action&) {
-        pid_t pid = selected_id(ProcessModel::Column::PID);
-        if (pid != -1)
-            kill(pid, SIGKILL);
-    });
-
-    auto stop_action = GUI::Action::create("Stop process", { Mod_Ctrl, Key_S }, Gfx::Bitmap::load_from_file("/res/icons/16x16/stop-hand.png"), [&](const GUI::Action&) {
-        pid_t pid = selected_id(ProcessModel::Column::PID);
-        if (pid != -1)
-            kill(pid, SIGSTOP);
-    });
-
-    auto continue_action = GUI::Action::create("Continue process", { Mod_Ctrl, Key_C }, Gfx::Bitmap::load_from_file("/res/icons/16x16/continue.png"), [&](const GUI::Action&) {
-        pid_t pid = selected_id(ProcessModel::Column::PID);
-        if (pid != -1)
-            kill(pid, SIGCONT);
-    });
-
-    auto profile_action = GUI::Action::create("Profile process", { Mod_Ctrl, Key_P },
-        Gfx::Bitmap::load_from_file("/res/icons/16x16/app-profiler.png"), [&](auto&) {
-            pid_t pid = selected_id(ProcessModel::Column::PID);
-            if (pid != -1) {
-                auto pid_string = String::format("%d", pid);
-                pid_t child;
-                const char* argv[] = { "/bin/Profiler", "--pid", pid_string.characters(), nullptr };
-                if ((errno = posix_spawn(&child, "/bin/Profiler", nullptr, nullptr, const_cast<char**>(argv), environ))) {
-                    perror("posix_spawn");
-                } else {
-                    if (disown(child) < 0)
-                        perror("disown");
-                }
-            }
-        });
-
-    auto inspect_action = GUI::Action::create("Inspect process", { Mod_Ctrl, Key_I },
-        Gfx::Bitmap::load_from_file("/res/icons/16x16/app-inspector.png"), [&](auto&) {
-            pid_t pid = selected_id(ProcessModel::Column::PID);
-            if (pid != -1) {
-                auto pid_string = String::format("%d", pid);
-                pid_t child;
-                const char* argv[] = { "/bin/Inspector", pid_string.characters(), nullptr };
-                if ((errno = posix_spawn(&child, "/bin/Inspector", nullptr, nullptr, const_cast<char**>(argv), environ))) {
-                    perror("posix_spawn");
-                } else {
-                    if (disown(child) < 0)
-                        perror("disown");
-                }
-            }
-        });
-
-    auto menubar = GUI::MenuBar::construct();
-    auto& app_menu = menubar->add_menu("System Monitor");
-    app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
-        GUI::Application::the()->quit();
-        return;
-    }));
-
-    auto& process_menu = menubar->add_menu("Process");
-    process_menu.add_action(kill_action);
-    process_menu.add_action(stop_action);
-    process_menu.add_action(continue_action);
-    process_menu.add_separator();
-    process_menu.add_action(profile_action);
-    process_menu.add_action(inspect_action);
-
-    auto process_context_menu = GUI::Menu::construct();
-    process_context_menu->add_action(kill_action);
-    process_context_menu->add_action(stop_action);
-    process_context_menu->add_action(continue_action);
-    process_context_menu->add_separator();
-    process_context_menu->add_action(profile_action);
-    process_context_menu->add_action(inspect_action);
-    process_table_view.on_context_menu_request = [&]([[maybe_unused]] const GUI::ModelIndex& index, const GUI::ContextMenuEvent& event) {
-        process_context_menu->popup(event.screen_position());
-    };
-
-    auto& frequency_menu = menubar->add_menu("Frequency");
-    GUI::ActionGroup frequency_action_group;
-    frequency_action_group.set_exclusive(true);
-
-    auto make_frequency_action = [&](auto& title, int interval, bool checked = false) {
-        auto action = GUI::Action::create_checkable(title, [&refresh_timer, interval](auto&) {
-            refresh_timer.restart(interval);
-        });
-        action->set_checked(checked);
-        frequency_action_group.add_action(*action);
-        frequency_menu.add_action(*action);
-    };
-
-    make_frequency_action("1 sec", 1000);
-    make_frequency_action("3 sec", 3000, true);
-    make_frequency_action("5 sec", 5000);
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("System Monitor", app_icon, window));
-
-    app->set_menubar(move(menubar));
-
-    auto& process_tab_unused_widget = process_container_splitter->add<UnavailableProcessWidget>("No process selected");
-    process_tab_unused_widget.set_visible(true);
-
-    auto& process_tab_widget = process_container_splitter->add<GUI::TabWidget>();
-    process_tab_widget.set_tab_position(GUI::TabWidget::TabPosition::Bottom);
-    process_tab_widget.set_visible(false);
-
-    auto& memory_map_widget = process_tab_widget.add_tab<ProcessMemoryMapWidget>("Memory map");
-    auto& open_files_widget = process_tab_widget.add_tab<ProcessFileDescriptorMapWidget>("Open files");
-    auto& unveiled_paths_widget = process_tab_widget.add_tab<ProcessUnveiledPathsWidget>("Unveiled paths");
-    auto& stack_widget = process_tab_widget.add_tab<ThreadStackWidget>("Stack");
-
-    process_table_view.on_selection = [&](auto&) {
-        auto pid = selected_id(ProcessModel::Column::PID);
-        auto tid = selected_id(ProcessModel::Column::TID);
-        if (!can_access_pid(pid)) {
-            process_tab_widget.set_visible(false);
-            process_tab_unused_widget.set_text("Process cannot be accessed");
-            process_tab_unused_widget.set_visible(true);
-            return;
-        }
-
-        process_tab_widget.set_visible(true);
-        process_tab_unused_widget.set_visible(false);
-        open_files_widget.set_pid(pid);
-        stack_widget.set_ids(pid, tid);
-        memory_map_widget.set_pid(pid);
-        unveiled_paths_widget.set_pid(pid);
-    };
-
-    window->show();
-
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    if (args_tab_view == "processes")
-        tabwidget.set_active_widget(process_container_splitter);
-    else if (args_tab_view == "graphs")
-        tabwidget.set_active_widget(graphs_widget);
-    else if (args_tab_view == "fs")
-        tabwidget.set_active_widget(file_systems_widget);
-    else if (args_tab_view == "pci")
-        tabwidget.set_active_widget(pci_devices_widget);
-    else if (args_tab_view == "devices")
-        tabwidget.set_active_widget(devices_widget);
-    else if (args_tab_view == "network")
-        tabwidget.set_active_widget(network_stats_widget);
-    else if (args_tab_view == "processors")
-        tabwidget.set_active_widget(processors_widget);
-    else if (args_tab_view == "interrupts")
-        tabwidget.set_active_widget(interrupts_widget);
-
-    return app->exec();
-}
-
-class ProgressBarPaintingDelegate final : public GUI::TableCellPaintingDelegate {
-public:
-    virtual ~ProgressBarPaintingDelegate() override { }
-
-    virtual void paint(GUI::Painter& painter, const Gfx::IntRect& a_rect, const Palette& palette, const GUI::ModelIndex& index) override
-    {
-        auto rect = a_rect.shrunken(2, 2);
-        auto percentage = index.data(GUI::ModelRole::Custom).to_i32();
-
-        auto data = index.data();
-        String text;
-        if (data.is_string())
-            text = data.as_string();
-        Gfx::StylePainter::paint_progress_bar(painter, rect, palette, 0, 100, percentage, text);
-        painter.draw_rect(rect, Color::Black);
-    }
-};
-
-NonnullRefPtr<GUI::Widget> build_file_systems_tab()
-{
-    auto fs_widget = GUI::LazyWidget::construct();
-
-    fs_widget->on_first_show = [](GUI::LazyWidget& self) {
-        self.set_layout<GUI::VerticalBoxLayout>();
-        self.layout()->set_margins({ 4, 4, 4, 4 });
-        auto& fs_table_view = self.add<GUI::TableView>();
-
-        Vector<GUI::JsonArrayModel::FieldSpec> df_fields;
-        df_fields.empend("mount_point", "Mount point", Gfx::TextAlignment::CenterLeft);
-        df_fields.empend("class_name", "Class", Gfx::TextAlignment::CenterLeft);
-        df_fields.empend("source", "Source", Gfx::TextAlignment::CenterLeft);
-        df_fields.empend(
-            "Size", Gfx::TextAlignment::CenterRight,
-            [](const JsonObject& object) {
-                StringBuilder size_builder;
-                size_builder.append(" ");
-                size_builder.append(human_readable_size(object.get("total_block_count").to_u32() * object.get("block_size").to_u32()));
-                size_builder.append(" ");
-                return size_builder.to_string();
-            },
-            [](const JsonObject& object) {
-                return object.get("total_block_count").to_u32() * object.get("block_size").to_u32();
-            },
-            [](const JsonObject& object) {
-                auto total_blocks = object.get("total_block_count").to_u32();
-                if (total_blocks == 0)
-                    return 0;
-                auto free_blocks = object.get("free_block_count").to_u32();
-                auto used_blocks = total_blocks - free_blocks;
-                int percentage = (int)((float)used_blocks / (float)total_blocks * 100.0f);
-                return percentage;
-            });
-        df_fields.empend(
-            "Used", Gfx::TextAlignment::CenterRight,
-            [](const JsonObject& object) {
-            auto total_blocks = object.get("total_block_count").to_u32();
-            auto free_blocks = object.get("free_block_count").to_u32();
-            auto used_blocks = total_blocks - free_blocks;
-            return human_readable_size(used_blocks * object.get("block_size").to_u32()); },
-            [](const JsonObject& object) {
-                auto total_blocks = object.get("total_block_count").to_u32();
-                auto free_blocks = object.get("free_block_count").to_u32();
-                auto used_blocks = total_blocks - free_blocks;
-                return used_blocks * object.get("block_size").to_u32();
-            });
-        df_fields.empend(
-            "Available", Gfx::TextAlignment::CenterRight,
-            [](const JsonObject& object) {
-                return human_readable_size(object.get("free_block_count").to_u32() * object.get("block_size").to_u32());
-            },
-            [](const JsonObject& object) {
-                return object.get("free_block_count").to_u32() * object.get("block_size").to_u32();
-            });
-        df_fields.empend("Access", Gfx::TextAlignment::CenterLeft, [](const JsonObject& object) {
-            bool readonly = object.get("readonly").to_bool();
-            int mount_flags = object.get("mount_flags").to_int();
-            return readonly || (mount_flags & MS_RDONLY) ? "Read-only" : "Read/Write";
-        });
-        df_fields.empend("Mount flags", Gfx::TextAlignment::CenterLeft, [](const JsonObject& object) {
-            int mount_flags = object.get("mount_flags").to_int();
-            StringBuilder builder;
-            bool first = true;
-            auto check = [&](int flag, const char* name) {
-                if (!(mount_flags & flag))
-                    return;
-                if (!first)
-                    builder.append(',');
-                builder.append(name);
-                first = false;
-            };
-            check(MS_NODEV, "nodev");
-            check(MS_NOEXEC, "noexec");
-            check(MS_NOSUID, "nosuid");
-            check(MS_BIND, "bind");
-            check(MS_RDONLY, "ro");
-            if (builder.string_view().is_empty())
-                return String("defaults");
-            return builder.to_string();
-        });
-        df_fields.empend("free_block_count", "Free blocks", Gfx::TextAlignment::CenterRight);
-        df_fields.empend("total_block_count", "Total blocks", Gfx::TextAlignment::CenterRight);
-        df_fields.empend("free_inode_count", "Free inodes", Gfx::TextAlignment::CenterRight);
-        df_fields.empend("total_inode_count", "Total inodes", Gfx::TextAlignment::CenterRight);
-        df_fields.empend("block_size", "Block size", Gfx::TextAlignment::CenterRight);
-        fs_table_view.set_model(GUI::SortingProxyModel::create(GUI::JsonArrayModel::create("/proc/df", move(df_fields))));
-
-        fs_table_view.set_column_painting_delegate(3, make<ProgressBarPaintingDelegate>());
-
-        fs_table_view.model()->update();
-    };
-    return fs_widget;
-}
-
-NonnullRefPtr<GUI::Widget> build_pci_devices_tab()
-{
-    auto pci_widget = GUI::LazyWidget::construct();
-
-    pci_widget->on_first_show = [](GUI::LazyWidget& self) {
-        self.set_layout<GUI::VerticalBoxLayout>();
-        self.layout()->set_margins({ 4, 4, 4, 4 });
-        auto& pci_table_view = self.add<GUI::TableView>();
-
-        auto db = PCIDB::Database::open();
-
-        Vector<GUI::JsonArrayModel::FieldSpec> pci_fields;
-        pci_fields.empend(
-            "Address", Gfx::TextAlignment::CenterLeft,
-            [](const JsonObject& object) {
-                auto seg = object.get("seg").to_u32();
-                auto bus = object.get("bus").to_u32();
-                auto slot = object.get("slot").to_u32();
-                auto function = object.get("function").to_u32();
-                return String::formatted("{:04x}:{:02x}:{:02x}.{}", seg, bus, slot, function);
-            });
-        pci_fields.empend(
-            "Class", Gfx::TextAlignment::CenterLeft,
-            [db](const JsonObject& object) {
-                auto class_id = object.get("class").to_u32();
-                String class_name = db->get_class(class_id);
-                return class_name == "" ? String::formatted("{:04x}", class_id) : class_name;
-            });
-        pci_fields.empend(
-            "Vendor", Gfx::TextAlignment::CenterLeft,
-            [db](const JsonObject& object) {
-                auto vendor_id = object.get("vendor_id").to_u32();
-                String vendor_name = db->get_vendor(vendor_id);
-                return vendor_name == "" ? String::formatted("{:02x}", vendor_id) : vendor_name;
-            });
-        pci_fields.empend(
-            "Device", Gfx::TextAlignment::CenterLeft,
-            [db](const JsonObject& object) {
-                auto vendor_id = object.get("vendor_id").to_u32();
-                auto device_id = object.get("device_id").to_u32();
-                String device_name = db->get_device(vendor_id, device_id);
-                return device_name == "" ? String::formatted("{:02x}", device_id) : device_name;
-            });
-        pci_fields.empend(
-            "Revision", Gfx::TextAlignment::CenterRight,
-            [](const JsonObject& object) {
-                auto revision_id = object.get("revision_id").to_u32();
-                return String::formatted("{:02x}", revision_id);
-            });
-
-        pci_table_view.set_model(GUI::SortingProxyModel::create(GUI::JsonArrayModel::create("/proc/pci", move(pci_fields))));
-        pci_table_view.model()->update();
-    };
-
-    return pci_widget;
-}
-
-NonnullRefPtr<GUI::Widget> build_devices_tab()
-{
-    auto devices_widget = GUI::LazyWidget::construct();
-
-    devices_widget->on_first_show = [](GUI::LazyWidget& self) {
-        self.set_layout<GUI::VerticalBoxLayout>();
-        self.layout()->set_margins({ 4, 4, 4, 4 });
-
-        auto& devices_table_view = self.add<GUI::TableView>();
-        devices_table_view.set_model(GUI::SortingProxyModel::create(DevicesModel::create()));
-        devices_table_view.model()->update();
-    };
-
-    return devices_widget;
-}
-
-NonnullRefPtr<GUI::Widget> build_graphs_tab()
-{
-    auto graphs_container = GUI::LazyWidget::construct();
-
-    graphs_container->on_first_show = [](GUI::LazyWidget& self) {
-        self.set_fill_with_background_color(true);
-        self.set_background_role(ColorRole::Button);
-        self.set_layout<GUI::VerticalBoxLayout>();
-        self.layout()->set_margins({ 4, 4, 4, 4 });
-
-        auto& cpu_graph_group_box = self.add<GUI::GroupBox>("CPU usage");
-        cpu_graph_group_box.set_layout<GUI::HorizontalBoxLayout>();
-        cpu_graph_group_box.layout()->set_margins({ 6, 16, 6, 6 });
-        cpu_graph_group_box.set_fixed_height(120);
-        Vector<GraphWidget*> cpu_graphs;
-        for (size_t i = 0; i < ProcessModel::the().cpus().size(); i++) {
-            auto& cpu_graph = cpu_graph_group_box.add<GraphWidget>();
-            cpu_graph.set_max(100);
-            cpu_graph.set_background_color(Color::White);
-            cpu_graph.set_value_format(0, {
-                                              .line_color = Color::Blue,
-                                              .background_color = Color::from_rgb(0xaaaaff),
-                                              .text_formatter = [](int value) {
-                                                  return String::formatted("Total: {}%", value);
-                                              },
-                                          });
-            cpu_graph.set_value_format(1, {
-                                              .line_color = Color::Red,
-                                              .background_color = Color::from_rgb(0xffaaaa),
-                                              .text_formatter = [](int value) {
-                                                  return String::formatted("Kernel: {}%", value);
-                                              },
-                                          });
-            cpu_graphs.append(&cpu_graph);
-        }
-        ProcessModel::the().on_cpu_info_change = [cpu_graphs](const NonnullOwnPtrVector<ProcessModel::CpuInfo>& cpus) {
-            for (size_t i = 0; i < cpus.size(); i++)
-                cpu_graphs[i]->add_value({ (int)cpus[i].total_cpu_percent, (int)cpus[i].total_cpu_percent_kernel });
-        };
-
-        auto& memory_graph_group_box = self.add<GUI::GroupBox>("Memory usage");
-        memory_graph_group_box.set_layout<GUI::VerticalBoxLayout>();
-        memory_graph_group_box.layout()->set_margins({ 6, 16, 6, 6 });
-        memory_graph_group_box.set_fixed_height(120);
-        auto& memory_graph = memory_graph_group_box.add<GraphWidget>();
-        memory_graph.set_background_color(Color::White);
-        memory_graph.set_stack_values(true);
-        memory_graph.set_value_format(0, {
-                                             .line_color = Color::from_rgb(0x619910),
-                                             .background_color = Color::from_rgb(0xbbffbb),
-                                             .text_formatter = [&memory_graph](int value) {
-                                                 return String::formatted("Committed: {} KiB", value);
-                                             },
-                                         });
-        memory_graph.set_value_format(1, {
-                                             .line_color = Color::Blue,
-                                             .background_color = Color::from_rgb(0xaaaaff),
-                                             .text_formatter = [&memory_graph](int value) {
-                                                 return String::formatted("Allocated: {} KiB", value);
-                                             },
-                                         });
-        memory_graph.set_value_format(2, {
-                                             .line_color = Color::Red,
-                                             .background_color = Color::from_rgb(0xffaaaa),
-                                             .text_formatter = [&memory_graph](int value) {
-                                                 return String::formatted("Kernel heap: {} KiB", value);
-                                             },
-                                         });
-
-        self.add<MemoryStatsWidget>(memory_graph);
-    };
-    return graphs_container;
-}
-
-NonnullRefPtr<GUI::Widget> build_processors_tab()
-{
-    auto processors_widget = GUI::LazyWidget::construct();
-
-    processors_widget->on_first_show = [](GUI::LazyWidget& self) {
-        self.set_layout<GUI::VerticalBoxLayout>();
-        self.layout()->set_margins({ 4, 4, 4, 4 });
-
-        Vector<GUI::JsonArrayModel::FieldSpec> processors_field;
-        processors_field.empend("processor", "Processor", Gfx::TextAlignment::CenterRight);
-        processors_field.empend("cpuid", "CPUID", Gfx::TextAlignment::CenterLeft);
-        processors_field.empend("brandstr", "Brand", Gfx::TextAlignment::CenterLeft);
-        processors_field.empend("Features", Gfx::TextAlignment::CenterLeft, [](auto& object) {
-            StringBuilder builder;
-            auto features = object.get("features").as_array();
-            for (auto& feature : features.values()) {
-                builder.append(feature.to_string());
-                builder.append(' ');
-            }
-            return GUI::Variant(builder.to_string());
-        });
-        processors_field.empend("family", "Family", Gfx::TextAlignment::CenterRight);
-        processors_field.empend("model", "Model", Gfx::TextAlignment::CenterRight);
-        processors_field.empend("stepping", "Stepping", Gfx::TextAlignment::CenterRight);
-        processors_field.empend("type", "Type", Gfx::TextAlignment::CenterRight);
-
-        auto& processors_table_view = self.add<GUI::TableView>();
-        processors_table_view.set_model(GUI::JsonArrayModel::create("/proc/cpuinfo", move(processors_field)));
-        processors_table_view.model()->update();
-    };
-
-    return processors_widget;
-}
diff --git a/Applications/Terminal/CMakeLists.txt b/Applications/Terminal/CMakeLists.txt
deleted file mode 100644
index 1fb969546e..0000000000
--- a/Applications/Terminal/CMakeLists.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-compile_gml(TerminalSettingsWindow.gml TerminalSettingsWindowGML.h terminal_settings_window_gml)
-
-set(SOURCES
-    TerminalSettingsWindowGML.h
-    main.cpp
-)
-
-serenity_app(Terminal ICON app-terminal)
-target_link_libraries(Terminal LibGUI LibVT)
diff --git a/Applications/Terminal/TerminalSettingsWindow.gml b/Applications/Terminal/TerminalSettingsWindow.gml
deleted file mode 100644
index 07b8400c56..0000000000
--- a/Applications/Terminal/TerminalSettingsWindow.gml
+++ /dev/null
@@ -1,63 +0,0 @@
-@GUI::Widget {
-    fill_with_background_color: true
-
-    layout: @GUI::VerticalBoxLayout {
-        margins: [4, 4, 4, 4]
-    }
-
-    @GUI::GroupBox {
-        title: "Bell mode"
-        shrink_to_fit: true
-
-        layout: @GUI::VerticalBoxLayout {
-            margins: [6, 16, 6, 6]
-        }
-
-        @GUI::RadioButton {
-            name: "beep_bell_radio"
-            text: "System beep"
-        }
-
-        @GUI::RadioButton {
-            name: "visual_bell_radio"
-            text: "Visual bell"
-        }
-
-        @GUI::RadioButton {
-            name: "no_bell_radio"
-            text: "No bell"
-        }
-    }
-
-    @GUI::GroupBox {
-        title: "Background opacity"
-        shrink_to_fit: true
-
-        layout: @GUI::VerticalBoxLayout {
-            margins: [6, 16, 6, 6]
-        }
-
-        @GUI::OpacitySlider {
-            name: "background_opacity_slider"
-            min: 0
-            max: 255
-            orientation: "Horizontal"
-        }
-    }
-
-    @GUI::GroupBox {
-        title: "Scrollback size (lines)"
-        shrink_to_fit: true
-
-        layout: @GUI::VerticalBoxLayout {
-            margins: [6, 16, 6, 6]
-        }
-
-        @GUI::SpinBox {
-            name: "history_size_spinbox"
-            min: 0
-            max: 40960
-            orientation: "Horizontal"
-        }
-    }
-}
diff --git a/Applications/Terminal/main.cpp b/Applications/Terminal/main.cpp
deleted file mode 100644
index 9267b9465f..0000000000
--- a/Applications/Terminal/main.cpp
+++ /dev/null
@@ -1,525 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/URL.h>
-#include <Applications/Terminal/TerminalSettingsWindowGML.h>
-#include <LibCore/ArgsParser.h>
-#include <LibDesktop/Launcher.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/ActionGroup.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/CheckBox.h>
-#include <LibGUI/Event.h>
-#include <LibGUI/FontPicker.h>
-#include <LibGUI/GroupBox.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/OpacitySlider.h>
-#include <LibGUI/RadioButton.h>
-#include <LibGUI/SpinBox.h>
-#include <LibGUI/TextBox.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/Palette.h>
-#include <LibVT/TerminalWidget.h>
-#include <assert.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <pwd.h>
-#include <serenity.h>
-#include <signal.h>
-#include <spawn.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/select.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-static void utmp_update(const char* tty, pid_t pid, bool create)
-{
-    if (!tty)
-        return;
-    int utmpupdate_pid = fork();
-    if (utmpupdate_pid < 0) {
-        perror("fork");
-        return;
-    }
-    if (utmpupdate_pid == 0) {
-        // Be careful here! Because fork() only clones one thread it's
-        // possible that we deadlock on anything involving a mutex,
-        // including the heap! So resort to low-level APIs
-        char pid_str[32];
-        snprintf(pid_str, sizeof(pid_str), "%d", pid);
-        execl("/bin/utmpupdate", "/bin/utmpupdate", "-f", "Terminal", "-p", pid_str, (create ? "-c" : "-d"), tty, nullptr);
-    } else {
-    wait_again:
-        int status = 0;
-        if (waitpid(utmpupdate_pid, &status, 0) < 0) {
-            int err = errno;
-            if (err == EINTR)
-                goto wait_again;
-            perror("waitpid");
-            return;
-        }
-        if (WIFEXITED(status) && WEXITSTATUS(status) != 0)
-            dbgln("Terminal: utmpupdate exited with status {}", WEXITSTATUS(status));
-        else if (WIFSIGNALED(status))
-            dbgln("Terminal: utmpupdate exited due to unhandled signal {}", WTERMSIG(status));
-    }
-}
-
-static pid_t run_command(int ptm_fd, String command)
-{
-    pid_t pid = fork();
-    if (pid < 0) {
-        perror("fork");
-        dbgln("run_command: could not fork to run '{}'", command);
-        return pid;
-    }
-
-    if (pid == 0) {
-        const char* tty_name = ptsname(ptm_fd);
-        if (!tty_name) {
-            perror("ptsname");
-            exit(1);
-        }
-        close(ptm_fd);
-        int pts_fd = open(tty_name, O_RDWR);
-        if (pts_fd < 0) {
-            perror("open");
-            exit(1);
-        }
-
-        if (setsid() < 0) {
-            perror("setsid");
-        }
-
-        close(0);
-        close(1);
-        close(2);
-
-        int rc = dup2(pts_fd, 0);
-        if (rc < 0) {
-            perror("dup2");
-            exit(1);
-        }
-        rc = dup2(pts_fd, 1);
-        if (rc < 0) {
-            perror("dup2");
-            exit(1);
-        }
-        rc = dup2(pts_fd, 2);
-        if (rc < 0) {
-            perror("dup2");
-            exit(1);
-        }
-        rc = close(pts_fd);
-        if (rc < 0) {
-            perror("close");
-            exit(1);
-        }
-        rc = ioctl(0, TIOCSCTTY);
-        if (rc < 0) {
-            perror("ioctl(TIOCSCTTY)");
-            exit(1);
-        }
-
-        String shell = "/bin/Shell";
-        auto* pw = getpwuid(getuid());
-        if (pw && pw->pw_shell) {
-            shell = pw->pw_shell;
-        }
-        endpwent();
-
-        const char* args[4] = { shell.characters(), nullptr, nullptr, nullptr };
-        if (!command.is_empty()) {
-            args[1] = "-c";
-            args[2] = command.characters();
-        }
-        const char* envs[] = { "PROMPT=\\X\\u@\\h:\\w\\a\\e[33;1m\\h\\e[0m \\e[34;1m\\w\\e[0m \\p ", "TERM=xterm", "PAGER=more", "PATH=/bin:/usr/bin:/usr/local/bin", nullptr };
-        rc = execve(shell.characters(), const_cast<char**>(args), const_cast<char**>(envs));
-        if (rc < 0) {
-            perror("execve");
-            exit(1);
-        }
-        ASSERT_NOT_REACHED();
-    }
-
-    return pid;
-}
-
-static RefPtr<GUI::Window> create_settings_window(TerminalWidget& terminal)
-{
-    auto window = GUI::Window::construct(terminal.window());
-    window->set_title("Terminal settings");
-    window->set_minimizable(false);
-    window->set_resizable(false);
-    window->resize(200, 210);
-    window->set_modal(true);
-
-    auto& settings = window->set_main_widget<GUI::Widget>();
-    settings.load_from_gml(terminal_settings_window_gml);
-
-    auto& beep_bell_radio = *settings.find_descendant_of_type_named<GUI::RadioButton>("beep_bell_radio");
-    auto& visual_bell_radio = *settings.find_descendant_of_type_named<GUI::RadioButton>("visual_bell_radio");
-    auto& no_bell_radio = *settings.find_descendant_of_type_named<GUI::RadioButton>("no_bell_radio");
-
-    switch (terminal.bell_mode()) {
-    case TerminalWidget::BellMode::Visible:
-        visual_bell_radio.set_checked(true);
-        break;
-    case TerminalWidget::BellMode::AudibleBeep:
-        beep_bell_radio.set_checked(true);
-        break;
-    case TerminalWidget::BellMode::Disabled:
-        no_bell_radio.set_checked(true);
-        break;
-    }
-
-    beep_bell_radio.on_checked = [&terminal](bool) {
-        terminal.set_bell_mode(TerminalWidget::BellMode::AudibleBeep);
-    };
-    visual_bell_radio.on_checked = [&terminal](bool) {
-        terminal.set_bell_mode(TerminalWidget::BellMode::Visible);
-    };
-    no_bell_radio.on_checked = [&terminal](bool) {
-        terminal.set_bell_mode(TerminalWidget::BellMode::Disabled);
-    };
-
-    auto& slider = *settings.find_descendant_of_type_named<GUI::OpacitySlider>("background_opacity_slider");
-    slider.on_change = [&terminal](int value) {
-        terminal.set_opacity(value);
-    };
-    slider.set_value(terminal.opacity());
-
-    auto& history_size_spinbox = *settings.find_descendant_of_type_named<GUI::SpinBox>("history_size_spinbox");
-    history_size_spinbox.set_value(terminal.max_history_size());
-    history_size_spinbox.on_change = [&terminal](int value) {
-        terminal.set_max_history_size(value);
-    };
-
-    return window;
-}
-
-static RefPtr<GUI::Window> create_find_window(TerminalWidget& terminal)
-{
-    auto window = GUI::Window::construct();
-    window->set_title("Find in Terminal");
-    window->set_resizable(false);
-    window->resize(300, 90);
-    window->set_modal(true);
-
-    auto& search = window->set_main_widget<GUI::Widget>();
-    search.set_fill_with_background_color(true);
-    search.set_background_role(ColorRole::Button);
-    search.set_layout<GUI::VerticalBoxLayout>();
-    search.layout()->set_margins({ 4, 4, 4, 4 });
-
-    auto& find = search.add<GUI::Widget>();
-    find.set_layout<GUI::HorizontalBoxLayout>();
-    find.layout()->set_margins({ 4, 4, 4, 4 });
-    find.set_fixed_height(30);
-
-    auto& find_textbox = find.add<GUI::TextBox>();
-    find_textbox.set_fixed_width(230);
-    find_textbox.set_focus(true);
-    if (terminal.has_selection()) {
-        String selected_text = terminal.selected_text();
-        selected_text.replace("\n", " ", true);
-        find_textbox.set_text(selected_text);
-    }
-    auto& find_backwards = find.add<GUI::Button>();
-    find_backwards.set_fixed_width(25);
-    find_backwards.set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/upward-triangle.png"));
-    auto& find_forwards = find.add<GUI::Button>();
-    find_forwards.set_fixed_width(25);
-    find_forwards.set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/downward-triangle.png"));
-
-    find_textbox.on_return_pressed = [&]() {
-        find_backwards.click();
-    };
-
-    auto& match_case = search.add<GUI::CheckBox>("Case sensitive");
-    auto& wrap_around = search.add<GUI::CheckBox>("Wrap around");
-
-    find_backwards.on_click = [&](auto) {
-        auto needle = find_textbox.text();
-        if (needle.is_empty()) {
-            return;
-        }
-
-        auto found_range = terminal.find_previous(needle, terminal.normalized_selection().start(), match_case.is_checked(), wrap_around.is_checked());
-
-        if (found_range.is_valid()) {
-            terminal.scroll_to_row(found_range.start().row());
-            terminal.set_selection(found_range);
-        }
-    };
-    find_forwards.on_click = [&](auto) {
-        auto needle = find_textbox.text();
-        if (needle.is_empty()) {
-            return;
-        }
-
-        auto found_range = terminal.find_next(needle, terminal.normalized_selection().end(), match_case.is_checked(), wrap_around.is_checked());
-
-        if (found_range.is_valid()) {
-            terminal.scroll_to_row(found_range.start().row());
-            terminal.set_selection(found_range);
-        }
-    };
-
-    return window;
-}
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio tty rpath accept cpath wpath shared_buffer proc exec unix fattr sigaction", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    struct sigaction act;
-    memset(&act, 0, sizeof(act));
-    act.sa_flags = SA_NOCLDWAIT;
-    act.sa_handler = SIG_IGN;
-    int rc = sigaction(SIGCHLD, &act, nullptr);
-    if (rc < 0) {
-        perror("sigaction");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio tty rpath accept cpath wpath shared_buffer proc exec unix", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    const char* command_to_execute = nullptr;
-
-    Core::ArgsParser args_parser;
-    args_parser.add_option(command_to_execute, "Execute this command inside the terminal", nullptr, 'e', "command");
-
-    args_parser.parse(argc, argv);
-
-    int ptm_fd = posix_openpt(O_RDWR | O_CLOEXEC);
-    if (ptm_fd < 0) {
-        perror("posix_openpt");
-        return 1;
-    }
-    if (grantpt(ptm_fd) < 0) {
-        perror("grantpt");
-        return 1;
-    }
-    if (unlockpt(ptm_fd) < 0) {
-        perror("unlockpt");
-        return 1;
-    }
-
-    RefPtr<Core::ConfigFile> config = Core::ConfigFile::get_for_app("Terminal");
-
-    pid_t shell_pid = 0;
-
-    if (command_to_execute)
-        shell_pid = run_command(ptm_fd, command_to_execute);
-    else
-        shell_pid = run_command(ptm_fd, config->read_entry("Startup", "Command", ""));
-
-    auto* pts_name = ptsname(ptm_fd);
-    utmp_update(pts_name, shell_pid, true);
-
-    auto app_icon = GUI::Icon::default_icon("app-terminal");
-
-    auto window = GUI::Window::construct();
-    window->set_title("Terminal");
-    window->set_background_color(Color::Black);
-    window->set_double_buffering_enabled(false);
-
-    auto& terminal = window->set_main_widget<TerminalWidget>(ptm_fd, true, config);
-    terminal.on_command_exit = [&] {
-        app->quit(0);
-    };
-    terminal.on_title_change = [&](auto& title) {
-        window->set_title(title);
-    };
-    terminal.apply_size_increments_to_window(*window);
-    window->show();
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    auto bell = config->read_entry("Window", "Bell", "Visible");
-    if (bell == "AudibleBeep") {
-        terminal.set_bell_mode(TerminalWidget::BellMode::AudibleBeep);
-    } else if (bell == "Disabled") {
-        terminal.set_bell_mode(TerminalWidget::BellMode::Disabled);
-    } else {
-        terminal.set_bell_mode(TerminalWidget::BellMode::Visible);
-    }
-
-    RefPtr<GUI::Window> settings_window;
-    RefPtr<GUI::Window> find_window;
-
-    auto new_opacity = config->read_num_entry("Window", "Opacity", 255);
-    terminal.set_opacity(new_opacity);
-    window->set_has_alpha_channel(new_opacity < 255);
-
-    auto new_scrollback_size = config->read_num_entry("Terminal", "MaxHistorySize", terminal.max_history_size());
-    terminal.set_max_history_size(new_scrollback_size);
-
-    auto open_settings_action = GUI::Action::create("Settings...", Gfx::Bitmap::load_from_file("/res/icons/16x16/gear.png"),
-        [&](const GUI::Action&) {
-            if (!settings_window) {
-                settings_window = create_settings_window(terminal);
-                settings_window->on_close_request = [&] {
-                    settings_window->remove_from_parent();
-                    settings_window = nullptr;
-                    return GUI::Window::CloseRequestDecision::Close;
-                };
-            }
-            if (!settings_window->is_visible()) {
-                settings_window->center_within(*window);
-                settings_window->show();
-            }
-            settings_window->move_to_front();
-        });
-
-    terminal.context_menu().add_separator();
-    auto pick_font_action = GUI::Action::create("Terminal font...", Gfx::Bitmap::load_from_file("/res/icons/16x16/app-font-editor.png"),
-        [&](auto&) {
-            auto picker = GUI::FontPicker::construct(window, &terminal.font(), true);
-            if (picker->exec() == GUI::Dialog::ExecOK) {
-                terminal.set_font_and_resize_to_fit(*picker->font());
-                window->resize(terminal.size());
-                config->write_entry("Text", "Font", picker->font()->qualified_name());
-                config->sync();
-            }
-        });
-
-    terminal.context_menu().add_action(pick_font_action);
-
-    terminal.context_menu().add_separator();
-    terminal.context_menu().add_action(open_settings_action);
-
-    auto menubar = GUI::MenuBar::construct();
-
-    auto& app_menu = menubar->add_menu("Terminal");
-    app_menu.add_action(GUI::Action::create("Open new terminal", { Mod_Ctrl | Mod_Shift, Key_N }, Gfx::Bitmap::load_from_file("/res/icons/16x16/app-terminal.png"), [&](auto&) {
-        pid_t child;
-        const char* argv[] = { "Terminal", nullptr };
-        if ((errno = posix_spawn(&child, "/bin/Terminal", nullptr, nullptr, const_cast<char**>(argv), environ))) {
-            perror("posix_spawn");
-        } else {
-            if (disown(child) < 0)
-                perror("disown");
-        }
-    }));
-
-    app_menu.add_action(open_settings_action);
-    app_menu.add_separator();
-    app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
-        dbgln("Terminal: Quit menu activated!");
-        GUI::Application::the()->quit();
-    }));
-
-    auto& edit_menu = menubar->add_menu("Edit");
-    edit_menu.add_action(terminal.copy_action());
-    edit_menu.add_action(terminal.paste_action());
-    edit_menu.add_separator();
-    edit_menu.add_action(GUI::Action::create("Find...", { Mod_Ctrl | Mod_Shift, Key_F }, Gfx::Bitmap::load_from_file("/res/icons/16x16/find.png"),
-        [&](auto&) {
-            if (!find_window) {
-                find_window = create_find_window(terminal);
-                find_window->on_close_request = [&] {
-                    find_window = nullptr;
-                    return GUI::Window::CloseRequestDecision::Close;
-                };
-            }
-            find_window->show();
-            find_window->move_to_front();
-        }));
-
-    auto& view_menu = menubar->add_menu("View");
-    view_menu.add_action(terminal.clear_including_history_action());
-    view_menu.add_separator();
-    view_menu.add_action(pick_font_action);
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_help_action([](auto&) {
-        Desktop::Launcher::open(URL::create_with_file_protocol("/usr/share/man/man1/Terminal.md"), "/bin/Help");
-    }));
-    help_menu.add_action(GUI::CommonActions::make_about_action("Terminal", app_icon, window));
-
-    app->set_menubar(move(menubar));
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/bin", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/bin/Terminal", "x") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/bin/utmpupdate", "x") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/etc/FileIconProvider.ini", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil("/tmp/portal/launch", "rw") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil(config->file_name().characters(), "rwc")) {
-        perror("unveil");
-        return 1;
-    }
-
-    unveil(nullptr, nullptr);
-
-    config->sync();
-    int result = app->exec();
-    dbgln("Exiting terminal, updating utmp");
-    utmp_update(pts_name, 0, false);
-    return result;
-}
diff --git a/Applications/TextEditor/CMakeLists.txt b/Applications/TextEditor/CMakeLists.txt
deleted file mode 100644
index 07eccd212e..0000000000
--- a/Applications/TextEditor/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-compile_gml(TextEditorWindow.gml TextEditorWindowGML.h text_editor_window_gml)
-
-set(SOURCES
-    main.cpp
-    TextEditorWidget.cpp
-    TextEditorWindowGML.h
-)
-
-serenity_app(TextEditor ICON app-text-editor)
-target_link_libraries(TextEditor LibWeb LibMarkdown LibGUI LibShell LibRegex LibDesktop)
diff --git a/Applications/TextEditor/TextEditorWidget.cpp b/Applications/TextEditor/TextEditorWidget.cpp
deleted file mode 100644
index 982bcc282c..0000000000
--- a/Applications/TextEditor/TextEditorWidget.cpp
+++ /dev/null
@@ -1,667 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "TextEditorWidget.h"
-#include <AK/JsonObject.h>
-#include <AK/JsonValue.h>
-#include <AK/Optional.h>
-#include <AK/StringBuilder.h>
-#include <AK/URL.h>
-#include <Applications/TextEditor/TextEditorWindowGML.h>
-#include <LibCore/File.h>
-#include <LibCore/MimeData.h>
-#include <LibDesktop/Launcher.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/ActionGroup.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/CppSyntaxHighlighter.h>
-#include <LibGUI/FilePicker.h>
-#include <LibGUI/FontPicker.h>
-#include <LibGUI/GMLSyntaxHighlighter.h>
-#include <LibGUI/INISyntaxHighlighter.h>
-#include <LibGUI/JSSyntaxHighlighter.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/MenuBar.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/RegularEditingEngine.h>
-#include <LibGUI/ShellSyntaxHighlighter.h>
-#include <LibGUI/Splitter.h>
-#include <LibGUI/StatusBar.h>
-#include <LibGUI/TextBox.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGUI/ToolBar.h>
-#include <LibGUI/ToolBarContainer.h>
-#include <LibGUI/VimEditingEngine.h>
-#include <LibGfx/Font.h>
-#include <LibMarkdown/Document.h>
-#include <LibWeb/OutOfProcessWebView.h>
-#include <string.h>
-
-TextEditorWidget::TextEditorWidget()
-{
-    load_from_gml(text_editor_window_gml);
-
-    auto& toolbar = *find_descendant_of_type_named<GUI::ToolBar>("toolbar");
-
-    m_editor = *find_descendant_of_type_named<GUI::TextEditor>("editor");
-    m_editor->set_ruler_visible(true);
-    m_editor->set_automatic_indentation_enabled(true);
-    m_editor->set_line_wrapping_enabled(true);
-    m_editor->set_editing_engine(make<GUI::RegularEditingEngine>());
-
-    m_editor->on_change = [this] {
-        update_preview();
-
-        // Do not mark as dirty on the first change (When document is first opened.)
-        if (m_document_opening) {
-            m_document_opening = false;
-            return;
-        }
-
-        bool was_dirty = m_document_dirty;
-        m_document_dirty = true;
-        if (!was_dirty)
-            update_title();
-    };
-
-    m_page_view = *find_descendant_of_type_named<Web::OutOfProcessWebView>("webview");
-    m_page_view->on_link_hover = [this](auto& url) {
-        if (url.is_valid())
-            m_statusbar->set_text(url.to_string());
-        else
-            update_statusbar_cursor_position();
-    };
-    m_page_view->on_link_click = [&](auto& url, auto&, unsigned) {
-        if (!Desktop::Launcher::open(url)) {
-            GUI::MessageBox::show(
-                window(),
-                String::formatted("The link to '{}' could not be opened.", url),
-                "Failed to open link",
-                GUI::MessageBox::Type::Error);
-        }
-    };
-
-    m_find_replace_widget = *find_descendant_of_type_named<GUI::Widget>("find_replace_widget");
-
-    m_find_widget = *find_descendant_of_type_named<GUI::Widget>("find_widget");
-
-    m_replace_widget = *find_descendant_of_type_named<GUI::Widget>("replace_widget");
-
-    m_find_textbox = m_find_widget->add<GUI::TextBox>();
-    m_replace_textbox = m_replace_widget->add<GUI::TextBox>();
-
-    m_find_next_action = GUI::Action::create("Find next", { Mod_Ctrl, Key_G }, Gfx::Bitmap::load_from_file("/res/icons/16x16/find-next.png"), [&](auto&) {
-        auto needle = m_find_textbox->text();
-        if (needle.is_empty()) {
-            dbgln("find_next(\"\")");
-            return;
-        }
-
-        if (m_find_use_regex)
-            m_editor->document().update_regex_matches(needle);
-
-        auto found_range = m_editor->document().find_next(needle, m_editor->normalized_selection().end(), GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
-        dbgln("find_next('{}') returned {}", needle, found_range);
-        if (found_range.is_valid()) {
-            m_editor->set_selection(found_range);
-        } else {
-            GUI::MessageBox::show(window(),
-                String::formatted("Not found: \"{}\"", needle),
-                "Not found",
-                GUI::MessageBox::Type::Information);
-        }
-    });
-
-    m_find_regex_action = GUI::Action::create("Find regex", { Mod_Ctrl | Mod_Shift, Key_R }, [&](auto&) {
-        m_find_regex_button->set_checked(!m_find_regex_button->is_checked());
-        m_find_use_regex = m_find_regex_button->is_checked();
-    });
-
-    m_find_previous_action = GUI::Action::create("Find previous", { Mod_Ctrl | Mod_Shift, Key_G }, [&](auto&) {
-        auto needle = m_find_textbox->text();
-        if (needle.is_empty()) {
-            dbgln("find_prev(\"\")");
-            return;
-        }
-
-        auto selection_start = m_editor->normalized_selection().start();
-        if (!selection_start.is_valid())
-            selection_start = m_editor->normalized_selection().end();
-
-        if (m_find_use_regex)
-            m_editor->document().update_regex_matches(needle);
-
-        auto found_range = m_editor->document().find_previous(needle, selection_start, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
-
-        dbgln("find_prev(\"{}\") returned {}", needle, found_range);
-        if (found_range.is_valid()) {
-            m_editor->set_selection(found_range);
-        } else {
-            GUI::MessageBox::show(window(),
-                String::formatted("Not found: \"{}\"", needle),
-                "Not found",
-                GUI::MessageBox::Type::Information);
-        }
-    });
-
-    m_replace_next_action = GUI::Action::create("Replace next", { Mod_Ctrl, Key_F1 }, [&](auto&) {
-        auto needle = m_find_textbox->text();
-        auto substitute = m_replace_textbox->text();
-
-        if (needle.is_empty())
-            return;
-
-        auto selection_start = m_editor->normalized_selection().start();
-        if (!selection_start.is_valid())
-            selection_start = m_editor->normalized_selection().start();
-
-        if (m_find_use_regex)
-            m_editor->document().update_regex_matches(needle);
-
-        auto found_range = m_editor->document().find_next(needle, selection_start, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
-
-        if (found_range.is_valid()) {
-            m_editor->set_selection(found_range);
-            m_editor->insert_at_cursor_or_replace_selection(substitute);
-        } else {
-            GUI::MessageBox::show(window(),
-                String::formatted("Not found: \"{}\"", needle),
-                "Not found",
-                GUI::MessageBox::Type::Information);
-        }
-    });
-
-    m_replace_previous_action = GUI::Action::create("Replace previous", { Mod_Ctrl | Mod_Shift, Key_F1 }, [&](auto&) {
-        auto needle = m_find_textbox->text();
-        auto substitute = m_replace_textbox->text();
-        if (needle.is_empty())
-            return;
-
-        auto selection_start = m_editor->normalized_selection().start();
-        if (!selection_start.is_valid())
-            selection_start = m_editor->normalized_selection().start();
-
-        if (m_find_use_regex)
-            m_editor->document().update_regex_matches(needle);
-
-        auto found_range = m_editor->document().find_previous(needle, selection_start);
-
-        if (found_range.is_valid()) {
-            m_editor->set_selection(found_range);
-            m_editor->insert_at_cursor_or_replace_selection(substitute);
-        } else {
-            GUI::MessageBox::show(window(),
-                String::formatted("Not found: \"{}\"", needle),
-                "Not found",
-                GUI::MessageBox::Type::Information);
-        }
-    });
-
-    m_replace_all_action = GUI::Action::create("Replace all", { Mod_Ctrl, Key_F2 }, [&](auto&) {
-        auto needle = m_find_textbox->text();
-        auto substitute = m_replace_textbox->text();
-        if (needle.is_empty())
-            return;
-        if (m_find_use_regex)
-            m_editor->document().update_regex_matches(needle);
-
-        auto found_range = m_editor->document().find_next(needle, {}, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
-        while (found_range.is_valid()) {
-            m_editor->set_selection(found_range);
-            m_editor->insert_at_cursor_or_replace_selection(substitute);
-            found_range = m_editor->document().find_next(needle, {}, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
-        }
-    });
-
-    m_find_previous_button = *find_descendant_of_type_named<GUI::Button>("find_previous_button");
-    m_find_previous_button->set_action(*m_find_previous_action);
-
-    m_find_next_button = *find_descendant_of_type_named<GUI::Button>("find_next_button");
-    m_find_next_button->set_action(*m_find_next_action);
-
-    m_find_textbox->on_return_pressed = [this] {
-        m_find_next_button->click();
-    };
-
-    m_find_regex_button = m_find_widget->add<GUI::Button>(".*");
-    m_find_regex_button->set_fixed_width(20);
-    m_find_regex_button->set_action(*m_find_regex_action);
-
-    m_find_textbox->on_escape_pressed = [this] {
-        m_find_replace_widget->set_visible(false);
-        m_editor->set_focus(true);
-    };
-
-    m_replace_previous_button = *find_descendant_of_type_named<GUI::Button>("replace_previous_button");
-    m_replace_previous_button->set_action(*m_replace_previous_action);
-
-    m_replace_next_button = *find_descendant_of_type_named<GUI::Button>("replace_next_button");
-    m_replace_next_button->set_action(*m_replace_next_action);
-
-    m_replace_all_button = *find_descendant_of_type_named<GUI::Button>("replace_all_button");
-    m_replace_all_button->set_action(*m_replace_all_action);
-
-    m_replace_textbox->on_return_pressed = [this] {
-        m_replace_next_button->click();
-    };
-
-    m_replace_textbox->on_escape_pressed = [this] {
-        m_find_replace_widget->set_visible(false);
-        m_editor->set_focus(true);
-    };
-
-    m_vim_emulation_setting_action = GUI::Action::create_checkable("Vim emulation", { Mod_Ctrl | Mod_Shift | Mod_Alt, Key_V }, [&](auto& action) {
-        if (action.is_checked())
-            m_editor->set_editing_engine(make<GUI::VimEditingEngine>());
-        else
-            m_editor->set_editing_engine(make<GUI::RegularEditingEngine>());
-    });
-    m_vim_emulation_setting_action->set_checked(false);
-
-    m_find_replace_action = GUI::Action::create("Find/Replace...", { Mod_Ctrl, Key_F }, Gfx::Bitmap::load_from_file("/res/icons/16x16/find.png"), [this](auto&) {
-        m_find_replace_widget->set_visible(true);
-        m_find_widget->set_visible(true);
-        m_replace_widget->set_visible(true);
-        m_find_textbox->set_focus(true);
-
-        if (m_editor->has_selection()) {
-            auto selected_text = m_editor->document().text_in_range(m_editor->normalized_selection());
-            m_find_textbox->set_text(selected_text);
-        }
-        m_find_textbox->select_all();
-    });
-
-    m_editor->add_custom_context_menu_action(*m_find_replace_action);
-    m_editor->add_custom_context_menu_action(*m_find_next_action);
-    m_editor->add_custom_context_menu_action(*m_find_previous_action);
-
-    m_statusbar = *find_descendant_of_type_named<GUI::StatusBar>("statusbar");
-
-    m_editor->on_cursor_change = [this] { update_statusbar_cursor_position(); };
-
-    m_new_action = GUI::Action::create("New", { Mod_Ctrl, Key_N }, Gfx::Bitmap::load_from_file("/res/icons/16x16/new.png"), [this](const GUI::Action&) {
-        if (m_document_dirty) {
-            auto save_document_first_result = GUI::MessageBox::show(window(), "Save changes to current document first?", "Warning", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
-            if (save_document_first_result == GUI::Dialog::ExecResult::ExecYes)
-                m_save_action->activate();
-            if (save_document_first_result == GUI::Dialog::ExecResult::ExecCancel)
-                return;
-        }
-
-        m_document_dirty = false;
-        m_editor->set_text(StringView());
-        set_path(LexicalPath());
-        update_title();
-    });
-
-    m_open_action = GUI::CommonActions::make_open_action([this](auto&) {
-        Optional<String> open_path = GUI::FilePicker::get_open_filepath(window());
-
-        if (!open_path.has_value())
-            return;
-
-        if (m_document_dirty) {
-            auto save_document_first_result = GUI::MessageBox::show(window(), "Save changes to current document first?", "Warning", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
-            if (save_document_first_result == GUI::Dialog::ExecResult::ExecYes)
-                m_save_action->activate();
-            if (save_document_first_result == GUI::Dialog::ExecResult::ExecCancel)
-                return;
-        }
-
-        open_sesame(open_path.value());
-    });
-
-    m_save_as_action = GUI::CommonActions::make_save_as_action([&](auto&) {
-        Optional<String> save_path = GUI::FilePicker::get_save_filepath(window(), m_name.is_null() ? "Untitled" : m_name, m_extension.is_null() ? "txt" : m_extension);
-        if (!save_path.has_value())
-            return;
-
-        if (!m_editor->write_to_file(save_path.value())) {
-            GUI::MessageBox::show(window(), "Unable to save file.\n", "Error", GUI::MessageBox::Type::Error);
-            return;
-        }
-
-        m_document_dirty = false;
-        set_path(LexicalPath(save_path.value()));
-        dbgln("Wrote document to {}", save_path.value());
-    });
-
-    m_save_action = GUI::CommonActions::make_save_action([&](auto&) {
-        if (!m_path.is_empty()) {
-            if (!m_editor->write_to_file(m_path)) {
-                GUI::MessageBox::show(window(), "Unable to save file.\n", "Error", GUI::MessageBox::Type::Error);
-            } else {
-                m_document_dirty = false;
-                update_title();
-            }
-            return;
-        }
-
-        m_save_as_action->activate();
-    });
-
-    m_line_wrapping_setting_action = GUI::Action::create_checkable("Line wrapping", [&](auto& action) {
-        m_editor->set_line_wrapping_enabled(action.is_checked());
-    });
-    m_line_wrapping_setting_action->set_checked(m_editor->is_line_wrapping_enabled());
-
-    auto menubar = GUI::MenuBar::construct();
-    auto& app_menu = menubar->add_menu("Text Editor");
-    app_menu.add_action(*m_new_action);
-    app_menu.add_action(*m_open_action);
-    app_menu.add_action(*m_save_action);
-    app_menu.add_action(*m_save_as_action);
-    app_menu.add_separator();
-    app_menu.add_action(GUI::CommonActions::make_quit_action([this](auto&) {
-        if (!request_close())
-            return;
-        GUI::Application::the()->quit();
-    }));
-
-    auto& edit_menu = menubar->add_menu("Edit");
-    edit_menu.add_action(m_editor->undo_action());
-    edit_menu.add_action(m_editor->redo_action());
-    edit_menu.add_separator();
-    edit_menu.add_action(m_editor->cut_action());
-    edit_menu.add_action(m_editor->copy_action());
-    edit_menu.add_action(m_editor->paste_action());
-    edit_menu.add_action(m_editor->delete_action());
-    edit_menu.add_separator();
-    edit_menu.add_action(*m_vim_emulation_setting_action);
-    edit_menu.add_separator();
-    edit_menu.add_action(*m_find_replace_action);
-    edit_menu.add_action(*m_find_next_action);
-    edit_menu.add_action(*m_find_regex_action);
-    edit_menu.add_action(*m_find_previous_action);
-    edit_menu.add_action(*m_replace_next_action);
-    edit_menu.add_action(*m_replace_previous_action);
-    edit_menu.add_action(*m_replace_all_action);
-
-    m_no_preview_action = GUI::Action::create_checkable(
-        "No preview", [this](auto&) {
-            set_preview_mode(PreviewMode::None);
-        });
-
-    m_markdown_preview_action = GUI::Action::create_checkable(
-        "Markdown preview", [this](auto&) {
-            set_preview_mode(PreviewMode::Markdown);
-        },
-        this);
-
-    m_html_preview_action = GUI::Action::create_checkable(
-        "HTML preview", [this](auto&) {
-            set_preview_mode(PreviewMode::HTML);
-        },
-        this);
-
-    m_preview_actions.add_action(*m_no_preview_action);
-    m_preview_actions.add_action(*m_markdown_preview_action);
-    m_preview_actions.add_action(*m_html_preview_action);
-    m_preview_actions.set_exclusive(true);
-
-    auto& view_menu = menubar->add_menu("View");
-    view_menu.add_action(GUI::Action::create("Editor font...", Gfx::Bitmap::load_from_file("/res/icons/16x16/app-font-editor.png"),
-        [&](auto&) {
-            auto picker = GUI::FontPicker::construct(window(), &m_editor->font(), true);
-            if (picker->exec() == GUI::Dialog::ExecOK) {
-                dbgln("setting font {}", picker->font()->qualified_name());
-                m_editor->set_font(picker->font());
-            }
-        }));
-
-    view_menu.add_separator();
-    view_menu.add_action(*m_line_wrapping_setting_action);
-    view_menu.add_separator();
-    view_menu.add_action(*m_no_preview_action);
-    view_menu.add_action(*m_markdown_preview_action);
-    view_menu.add_action(*m_html_preview_action);
-    view_menu.add_separator();
-
-    syntax_actions.set_exclusive(true);
-
-    auto& syntax_menu = view_menu.add_submenu("Syntax");
-    m_plain_text_highlight = GUI::Action::create_checkable("Plain text", [&](auto&) {
-        m_editor->set_syntax_highlighter({});
-        m_editor->update();
-    });
-    m_plain_text_highlight->set_checked(true);
-    syntax_actions.add_action(*m_plain_text_highlight);
-    syntax_menu.add_action(*m_plain_text_highlight);
-
-    m_cpp_highlight = GUI::Action::create_checkable("C++", [&](auto&) {
-        m_editor->set_syntax_highlighter(make<GUI::CppSyntaxHighlighter>());
-        m_editor->update();
-    });
-    syntax_actions.add_action(*m_cpp_highlight);
-    syntax_menu.add_action(*m_cpp_highlight);
-
-    m_js_highlight = GUI::Action::create_checkable("JavaScript", [&](auto&) {
-        m_editor->set_syntax_highlighter(make<GUI::JSSyntaxHighlighter>());
-        m_editor->update();
-    });
-    syntax_actions.add_action(*m_js_highlight);
-    syntax_menu.add_action(*m_js_highlight);
-
-    m_gml_highlight = GUI::Action::create_checkable("GML", [&](auto&) {
-        m_editor->set_syntax_highlighter(make<GUI::GMLSyntaxHighlighter>());
-        m_editor->update();
-    });
-    syntax_actions.add_action(*m_gml_highlight);
-    syntax_menu.add_action(*m_gml_highlight);
-
-    m_ini_highlight = GUI::Action::create_checkable("INI File", [&](auto&) {
-        m_editor->set_syntax_highlighter(make<GUI::IniSyntaxHighlighter>());
-        m_editor->update();
-    });
-    syntax_actions.add_action(*m_ini_highlight);
-    syntax_menu.add_action(*m_ini_highlight);
-
-    m_shell_highlight = GUI::Action::create_checkable("Shell File", [&](auto&) {
-        m_editor->set_syntax_highlighter(make<GUI::ShellSyntaxHighlighter>());
-        m_editor->update();
-    });
-    syntax_actions.add_action(*m_shell_highlight);
-    syntax_menu.add_action(*m_shell_highlight);
-
-    auto& help_menu = menubar->add_menu("Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Text Editor", GUI::Icon::default_icon("app-text-editor"), window()));
-
-    GUI::Application::the()->set_menubar(move(menubar));
-
-    toolbar.add_action(*m_new_action);
-    toolbar.add_action(*m_open_action);
-    toolbar.add_action(*m_save_action);
-
-    toolbar.add_separator();
-
-    toolbar.add_action(m_editor->cut_action());
-    toolbar.add_action(m_editor->copy_action());
-    toolbar.add_action(m_editor->paste_action());
-    toolbar.add_action(m_editor->delete_action());
-
-    toolbar.add_separator();
-
-    toolbar.add_action(m_editor->undo_action());
-    toolbar.add_action(m_editor->redo_action());
-}
-
-TextEditorWidget::~TextEditorWidget()
-{
-}
-
-void TextEditorWidget::set_path(const LexicalPath& lexical_path)
-{
-    m_path = lexical_path.string();
-    m_name = lexical_path.title();
-    m_extension = lexical_path.extension();
-
-    if (m_extension == "c" || m_extension == "cc" || m_extension == "cxx" || m_extension == "cpp" || m_extension == "h") {
-        m_cpp_highlight->activate();
-    } else if (m_extension == "js" || m_extension == "json") {
-        m_js_highlight->activate();
-    } else if (m_extension == "gml") {
-        m_gml_highlight->activate();
-    } else if (m_extension == "ini") {
-        m_ini_highlight->activate();
-    } else {
-        m_plain_text_highlight->activate();
-    }
-
-    if (m_auto_detect_preview_mode) {
-        if (m_extension == "md")
-            set_preview_mode(PreviewMode::Markdown);
-        else if (m_extension == "html")
-            set_preview_mode(PreviewMode::HTML);
-        else
-            set_preview_mode(PreviewMode::None);
-    }
-
-    update_title();
-}
-
-void TextEditorWidget::update_title()
-{
-    StringBuilder builder;
-    if (m_path.is_empty())
-        builder.append("Untitled");
-    else
-        builder.append(m_path);
-    if (m_document_dirty)
-        builder.append(" (*)");
-    builder.append(" - Text Editor");
-    window()->set_title(builder.to_string());
-}
-
-void TextEditorWidget::open_sesame(const String& path)
-{
-    auto file = Core::File::construct(path);
-    if (!file->open(Core::IODevice::ReadOnly) && file->error() != ENOENT) {
-        GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: {}", path, strerror(errno)), "Error", GUI::MessageBox::Type::Error);
-        return;
-    }
-
-    m_editor->set_text(file->read_all());
-    m_document_dirty = false;
-    m_document_opening = true;
-
-    set_path(LexicalPath(path));
-
-    m_editor->set_focus(true);
-}
-
-bool TextEditorWidget::request_close()
-{
-    if (!m_document_dirty)
-        return true;
-    auto result = GUI::MessageBox::show(window(), "The document has been modified. Would you like to save?", "Unsaved changes", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
-
-    if (result == GUI::MessageBox::ExecYes) {
-        m_save_action->activate();
-        return true;
-    }
-
-    if (result == GUI::MessageBox::ExecNo)
-        return true;
-
-    return false;
-}
-
-void TextEditorWidget::drop_event(GUI::DropEvent& event)
-{
-    event.accept();
-    window()->move_to_front();
-
-    if (event.mime_data().has_urls()) {
-        auto urls = event.mime_data().urls();
-        if (urls.is_empty())
-            return;
-        if (urls.size() > 1) {
-            GUI::MessageBox::show(window(), "TextEditor can only open one file at a time!", "One at a time please!", GUI::MessageBox::Type::Error);
-            return;
-        }
-        open_sesame(urls.first().path());
-    }
-}
-
-void TextEditorWidget::set_preview_mode(PreviewMode mode)
-{
-    if (m_preview_mode == mode)
-        return;
-    m_preview_mode = mode;
-
-    if (m_preview_mode == PreviewMode::HTML) {
-        m_html_preview_action->set_checked(true);
-        m_page_view->set_visible(true);
-        update_html_preview();
-    } else if (m_preview_mode == PreviewMode::Markdown) {
-        m_markdown_preview_action->set_checked(true);
-        m_page_view->set_visible(true);
-        update_markdown_preview();
-    } else {
-        m_no_preview_action->set_checked(true);
-        m_page_view->set_visible(false);
-    }
-}
-
-void TextEditorWidget::update_preview()
-{
-    switch (m_preview_mode) {
-    case PreviewMode::Markdown:
-        update_markdown_preview();
-        break;
-    case PreviewMode::HTML:
-        update_html_preview();
-        break;
-    default:
-        break;
-    }
-}
-
-void TextEditorWidget::update_markdown_preview()
-{
-    auto document = Markdown::Document::parse(m_editor->text());
-    if (document) {
-        auto html = document->render_to_html();
-        auto current_scroll_pos = m_page_view->visible_content_rect();
-        m_page_view->load_html(html, URL::create_with_file_protocol(m_path));
-        m_page_view->scroll_into_view(current_scroll_pos, true, true);
-    }
-}
-
-void TextEditorWidget::update_html_preview()
-{
-    auto current_scroll_pos = m_page_view->visible_content_rect();
-    m_page_view->load_html(m_editor->text(), URL::create_with_file_protocol(m_path));
-    m_page_view->scroll_into_view(current_scroll_pos, true, true);
-}
-
-void TextEditorWidget::update_statusbar_cursor_position()
-{
-    StringBuilder builder;
-    builder.appendff("Line: {}, Column: {}", m_editor->cursor().line() + 1, m_editor->cursor().column());
-    m_statusbar->set_text(builder.to_string());
-}
diff --git a/Applications/TextEditor/TextEditorWidget.h b/Applications/TextEditor/TextEditorWidget.h
deleted file mode 100644
index 763087b9e4..0000000000
--- a/Applications/TextEditor/TextEditorWidget.h
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <AK/LexicalPath.h>
-#include <LibGUI/ActionGroup.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-#include <LibWeb/Forward.h>
-
-class TextEditorWidget final : public GUI::Widget {
-    C_OBJECT(TextEditorWidget)
-public:
-    virtual ~TextEditorWidget() override;
-    void open_sesame(const String& path);
-    bool request_close();
-
-    GUI::TextEditor& editor() { return *m_editor; }
-
-    enum class PreviewMode {
-        None,
-        Markdown,
-        HTML,
-    };
-
-    void set_preview_mode(PreviewMode);
-    void set_auto_detect_preview_mode(bool value) { m_auto_detect_preview_mode = value; }
-
-    void update_title();
-
-private:
-    TextEditorWidget();
-    void set_path(const LexicalPath& file);
-    void update_preview();
-    void update_markdown_preview();
-    void update_html_preview();
-    void update_statusbar_cursor_position();
-
-    virtual void drop_event(GUI::DropEvent&) override;
-
-    RefPtr<GUI::TextEditor> m_editor;
-    String m_path;
-    String m_name;
-    String m_extension;
-    RefPtr<GUI::Action> m_new_action;
-    RefPtr<GUI::Action> m_open_action;
-    RefPtr<GUI::Action> m_save_action;
-    RefPtr<GUI::Action> m_save_as_action;
-    RefPtr<GUI::Action> m_find_replace_action;
-    RefPtr<GUI::Action> m_line_wrapping_setting_action;
-    RefPtr<GUI::Action> m_vim_emulation_setting_action;
-
-    RefPtr<GUI::Action> m_find_next_action;
-    RefPtr<GUI::Action> m_find_regex_action;
-    RefPtr<GUI::Action> m_find_previous_action;
-    RefPtr<GUI::Action> m_replace_next_action;
-    RefPtr<GUI::Action> m_replace_previous_action;
-    RefPtr<GUI::Action> m_replace_all_action;
-
-    GUI::ActionGroup m_preview_actions;
-    RefPtr<GUI::Action> m_no_preview_action;
-    RefPtr<GUI::Action> m_markdown_preview_action;
-    RefPtr<GUI::Action> m_html_preview_action;
-
-    RefPtr<GUI::StatusBar> m_statusbar;
-
-    RefPtr<GUI::TextBox> m_find_textbox;
-    RefPtr<GUI::TextBox> m_replace_textbox;
-    RefPtr<GUI::Button> m_find_previous_button;
-    RefPtr<GUI::Button> m_find_next_button;
-    RefPtr<GUI::Button> m_find_regex_button;
-    RefPtr<GUI::Button> m_replace_previous_button;
-    RefPtr<GUI::Button> m_replace_next_button;
-    RefPtr<GUI::Button> m_replace_all_button;
-    RefPtr<GUI::Widget> m_find_replace_widget;
-    RefPtr<GUI::Widget> m_find_widget;
-    RefPtr<GUI::Widget> m_replace_widget;
-
-    GUI::ActionGroup syntax_actions;
-    RefPtr<GUI::Action> m_plain_text_highlight;
-    RefPtr<GUI::Action> m_cpp_highlight;
-    RefPtr<GUI::Action> m_js_highlight;
-    RefPtr<GUI::Action> m_gml_highlight;
-    RefPtr<GUI::Action> m_ini_highlight;
-    RefPtr<GUI::Action> m_shell_highlight;
-
-    RefPtr<Web::OutOfProcessWebView> m_page_view;
-
-    bool m_document_dirty { false };
-    bool m_document_opening { false };
-    bool m_auto_detect_preview_mode { false };
-    bool m_find_use_regex { false };
-
-    PreviewMode m_preview_mode { PreviewMode::None };
-};
diff --git a/Applications/TextEditor/TextEditorWindow.gml b/Applications/TextEditor/TextEditorWindow.gml
deleted file mode 100644
index 433d01abff..0000000000
--- a/Applications/TextEditor/TextEditorWindow.gml
+++ /dev/null
@@ -1,88 +0,0 @@
-@GUI::Widget {
-    name: "main"
-    fill_with_background_color: true
-
-    layout: @GUI::VerticalBoxLayout {
-        spacing: 2
-    }
-
-    @GUI::ToolBarContainer {
-        @GUI::ToolBar {
-            name: "toolbar"
-        }
-    }
-
-    @GUI::HorizontalSplitter {
-        @GUI::TextEditor {
-            name: "editor"
-        }
-
-        @Web::OutOfProcessWebView {
-            name: "webview"
-            visible: false
-        }
-    }
-
-    @GUI::Widget {
-        name: "find_replace_widget"
-        visible: false
-        fill_with_background_color: true
-        fixed_height: 48
-
-        layout: @GUI::VerticalBoxLayout {
-            margins: [2, 2, 2, 4]
-        }
-
-        @GUI::Widget {
-            name: "find_widget"
-            fill_with_background_color: true
-            fixed_height: 22
-
-            layout: @GUI::HorizontalBoxLayout {
-            }
-
-            @GUI::Button {
-                name: "find_previous_button"
-                text: "Find previous"
-                fixed_width: 150
-            }
-
-            @GUI::Button {
-                name: "find_next_button"
-                text: "Find next"
-                fixed_width: 150
-            }
-        }
-
-        @GUI::Widget {
-            name: "replace_widget"
-            fill_with_background_color: true
-            fixed_height: 22
-
-            layout: @GUI::HorizontalBoxLayout {
-            }
-
-            @GUI::Button {
-                name: "replace_previous_button"
-                text: "Replace previous"
-                fixed_width: 100
-            }
-
-            @GUI::Button {
-                name: "replace_next_button"
-                text: "Replace next"
-                fixed_width: 100
-            }
-
-            @GUI::Button {
-                name: "replace_all_button"
-                text: "Replace all"
-                fixed_width: 100
-            }
-        }
-    }
-
-    @GUI::StatusBar {
-        name: "statusbar"
-    }
-}
diff --git a/Applications/TextEditor/main.cpp b/Applications/TextEditor/main.cpp
deleted file mode 100644
index 8e9c8fdfb8..0000000000
--- a/Applications/TextEditor/main.cpp
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "TextEditorWidget.h"
-#include <LibCore/ArgsParser.h>
-#include <LibGfx/Bitmap.h>
-#include <stdio.h>
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio thread rpath accept cpath wpath shared_buffer unix fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio thread rpath accept cpath wpath shared_buffer unix", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    const char* preview_mode = "auto";
-    const char* file_to_edit = nullptr;
-    Core::ArgsParser parser;
-    parser.add_option(preview_mode, "Preview mode, one of 'none', 'html', 'markdown', 'auto'", "preview-mode", '\0', "mode");
-    parser.add_positional_argument(file_to_edit, "File to edit", "file", Core::ArgsParser::Required::No);
-
-    parser.parse(argc, argv);
-
-    StringView preview_mode_view = preview_mode;
-
-    auto app_icon = GUI::Icon::default_icon("app-text-editor");
-
-    auto window = GUI::Window::construct();
-    window->resize(640, 400);
-
-    auto& text_widget = window->set_main_widget<TextEditorWidget>();
-
-    text_widget.editor().set_focus(true);
-
-    window->on_close_request = [&]() -> GUI::Window::CloseRequestDecision {
-        if (text_widget.request_close())
-            return GUI::Window::CloseRequestDecision::Close;
-        return GUI::Window::CloseRequestDecision::StayOpen;
-    };
-
-    if (preview_mode_view == "auto") {
-        text_widget.set_auto_detect_preview_mode(true);
-    } else if (preview_mode_view == "markdown") {
-        text_widget.set_preview_mode(TextEditorWidget::PreviewMode::Markdown);
-    } else if (preview_mode_view == "html") {
-        text_widget.set_preview_mode(TextEditorWidget::PreviewMode::HTML);
-    } else if (preview_mode_view == "none") {
-        text_widget.set_preview_mode(TextEditorWidget::PreviewMode::None);
-    } else {
-        warnln("Invalid mode '{}'", preview_mode);
-        return 1;
-    }
-
-    if (file_to_edit)
-        text_widget.open_sesame(file_to_edit);
-    else
-        text_widget.update_title();
-
-    window->show();
-    window->set_icon(app_icon.bitmap_for_size(16));
-
-    return app->exec();
-}
diff --git a/Applications/ThemeEditor/CMakeLists.txt b/Applications/ThemeEditor/CMakeLists.txt
deleted file mode 100644
index 94ca0e1f3e..0000000000
--- a/Applications/ThemeEditor/CMakeLists.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-set(SOURCES
-    PreviewWidget.cpp
-    main.cpp
-)
-
-serenity_app(ThemeEditor ICON app-theme-editor)
-target_link_libraries(ThemeEditor LibGUI)
diff --git a/Applications/ThemeEditor/PreviewWidget.cpp b/Applications/ThemeEditor/PreviewWidget.cpp
deleted file mode 100644
index a57da75936..0000000000
--- a/Applications/ThemeEditor/PreviewWidget.cpp
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "PreviewWidget.h"
-#include <AK/StringView.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/CheckBox.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/RadioButton.h>
-#include <LibGUI/StatusBar.h>
-#include <LibGUI/TextEditor.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/WindowTheme.h>
-
-namespace ThemeEditor {
-
-class MiniWidgetGallery final : public GUI::Widget {
-    C_OBJECT(MiniWidgetGallery);
-
-public:
-    void set_preview_palette(const Gfx::Palette& palette)
-    {
-        set_palette(palette);
-        Function<void(GUI::Widget&)> recurse = [&](GUI::Widget& parent_widget) {
-            parent_widget.for_each_child_widget([&](auto& widget) {
-                widget.set_palette(palette);
-                recurse(widget);
-                return IterationDecision::Continue;
-            });
-        };
-        recurse(*this);
-    }
-
-private:
-    MiniWidgetGallery()
-    {
-        set_fill_with_background_color(true);
-        m_button = add<GUI::Button>();
-        m_button->set_text("Button");
-        m_checkbox = add<GUI::CheckBox>();
-        m_checkbox->set_text("Check box");
-        m_radio = add<GUI::RadioButton>();
-        m_radio->set_text("Radio button");
-        m_statusbar = add<GUI::StatusBar>();
-        m_statusbar->set_text("Status bar");
-        m_editor = add<GUI::TextEditor>();
-        m_editor->set_text("Text editor\nwith multiple\nlines.");
-    }
-
-    virtual void resize_event(GUI::ResizeEvent&) override
-    {
-        m_editor->set_relative_rect(10, 70, 200, 140);
-        m_button->set_relative_rect(10, 10, 200, 20);
-        m_checkbox->set_relative_rect(10, 30, 200, 20);
-        m_radio->set_relative_rect(10, 50, 200, 20);
-        m_statusbar->set_relative_rect(0, height() - 16, width(), 16);
-    }
-
-    RefPtr<GUI::TextEditor> m_editor;
-    RefPtr<GUI::Button> m_button;
-    RefPtr<GUI::CheckBox> m_checkbox;
-    RefPtr<GUI::RadioButton> m_radio;
-    RefPtr<GUI::StatusBar> m_statusbar;
-};
-
-PreviewWidget::PreviewWidget(const Gfx::Palette& preview_palette)
-    : m_preview_palette(preview_palette)
-{
-    m_active_window_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/window.png");
-    m_inactive_window_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/window.png");
-
-    m_close_bitmap = Gfx::Bitmap::load_from_file("/res/icons/16x16/window-close.png");
-    m_maximize_bitmap = Gfx::Bitmap::load_from_file("/res/icons/16x16/upward-triangle.png");
-    m_minimize_bitmap = Gfx::Bitmap::load_from_file("/res/icons/16x16/downward-triangle.png");
-
-    m_gallery = add<MiniWidgetGallery>();
-    set_greedy_for_hits(true);
-}
-
-PreviewWidget::~PreviewWidget()
-{
-}
-
-void PreviewWidget::set_preview_palette(const Gfx::Palette& palette)
-{
-    m_preview_palette = palette;
-    m_gallery->set_preview_palette(palette);
-    update();
-}
-
-void PreviewWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-    GUI::Painter painter(*this);
-
-    painter.add_clip_rect(event.rect());
-    painter.add_clip_rect(frame_inner_rect());
-
-    painter.fill_rect(frame_inner_rect(), m_preview_palette.desktop_background());
-
-    struct Button {
-        Gfx::IntRect rect;
-        RefPtr<Gfx::Bitmap> bitmap;
-    };
-
-    auto paint_window = [&](auto& title, const Gfx::IntRect& rect, auto state, const Gfx::Bitmap& icon) {
-        int window_button_width = m_preview_palette.window_title_button_width();
-        int window_button_height = m_preview_palette.window_title_button_height();
-        auto title_bar_text_rect = Gfx::WindowTheme::current().title_bar_text_rect(Gfx::WindowTheme::WindowType::Normal, rect, m_preview_palette);
-        int pos = title_bar_text_rect.right() + 1;
-
-        Vector<Button> buttons;
-        buttons.append(Button { {}, m_close_bitmap });
-        buttons.append(Button { {}, m_maximize_bitmap });
-        buttons.append(Button { {}, m_minimize_bitmap });
-
-        for (auto& button : buttons) {
-            pos -= window_button_width;
-            Gfx::IntRect rect { pos, 0, window_button_width, window_button_height };
-            rect.center_vertically_within(title_bar_text_rect);
-            button.rect = rect;
-        }
-
-        auto frame_rect = Gfx::WindowTheme::current().frame_rect_for_window(Gfx::WindowTheme::WindowType::Normal, rect, m_preview_palette);
-        Gfx::PainterStateSaver saver(painter);
-        painter.translate(frame_rect.location());
-        Gfx::WindowTheme::current().paint_normal_frame(painter, state, rect, title, icon, m_preview_palette, buttons.last().rect);
-
-        for (auto& button : buttons) {
-            Gfx::StylePainter::paint_button(painter, button.rect, m_preview_palette, Gfx::ButtonStyle::Normal, false);
-            auto bitmap_rect = button.bitmap->rect();
-            bitmap_rect.center_within(button.rect);
-            painter.blit(bitmap_rect.location(), *button.bitmap, button.bitmap->rect());
-        }
-    };
-
-    Gfx::IntRect active_rect { 0, 0, 320, 240 };
-    active_rect.center_within(frame_inner_rect());
-    Gfx::IntRect inactive_rect = active_rect.translated(-20, -20);
-
-    paint_window("Inactive window", inactive_rect, Gfx::WindowTheme::WindowState::Inactive, *m_active_window_icon);
-    paint_window("Active window", active_rect, Gfx::WindowTheme::WindowState::Active, *m_inactive_window_icon);
-}
-
-void PreviewWidget::resize_event(GUI::ResizeEvent&)
-{
-    Gfx::IntRect gallery_rect { 0, 0, 320, 240 };
-    gallery_rect.center_within(rect());
-    m_gallery->set_relative_rect(gallery_rect);
-}
-
-}
diff --git a/Applications/ThemeEditor/PreviewWidget.h b/Applications/ThemeEditor/PreviewWidget.h
deleted file mode 100644
index 41ef25e0a8..0000000000
--- a/Applications/ThemeEditor/PreviewWidget.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Frame.h>
-#include <LibGfx/Palette.h>
-
-namespace ThemeEditor {
-
-class MiniWidgetGallery;
-
-class PreviewWidget final : public GUI::Frame {
-    C_OBJECT(PreviewWidget);
-
-public:
-    virtual ~PreviewWidget() override;
-
-    const Gfx::Palette& preview_palette() const { return m_preview_palette; }
-    void set_preview_palette(const Gfx::Palette&);
-
-private:
-    explicit PreviewWidget(const Gfx::Palette&);
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void resize_event(GUI::ResizeEvent&) override;
-
-    Gfx::Palette m_preview_palette;
-
-    RefPtr<Gfx::Bitmap> m_active_window_icon;
-    RefPtr<Gfx::Bitmap> m_inactive_window_icon;
-
-    RefPtr<MiniWidgetGallery> m_gallery;
-
-    RefPtr<Gfx::Bitmap> m_close_bitmap;
-    RefPtr<Gfx::Bitmap> m_maximize_bitmap;
-    RefPtr<Gfx::Bitmap> m_minimize_bitmap;
-};
-
-}
diff --git a/Applications/ThemeEditor/main.cpp b/Applications/ThemeEditor/main.cpp
deleted file mode 100644
index d4a5936770..0000000000
--- a/Applications/ThemeEditor/main.cpp
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "PreviewWidget.h"
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/ColorInput.h>
-#include <LibGUI/ComboBox.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Model.h>
-#include <LibGUI/Window.h>
-
-class ColorRoleModel final : public GUI::Model {
-public:
-    virtual int row_count(const GUI::ModelIndex&) const { return m_color_roles.size(); }
-    virtual int column_count(const GUI::ModelIndex&) const { return 1; }
-    virtual GUI::Variant data(const GUI::ModelIndex& index, GUI::ModelRole role = GUI::ModelRole::Display) const
-    {
-        if (role == GUI::ModelRole::Display)
-            return Gfx::to_string(m_color_roles[(size_t)index.row()]);
-        return {};
-    }
-    virtual void update() { did_update(); }
-
-    explicit ColorRoleModel(const Vector<Gfx::ColorRole>& color_roles)
-        : m_color_roles(color_roles)
-    {
-    }
-
-    Gfx::ColorRole color_role(const GUI::ModelIndex& index) const
-    {
-        return m_color_roles[index.row()];
-    }
-
-    Gfx::ColorRole color_role(size_t index) const
-    {
-        return m_color_roles[index];
-    }
-
-private:
-    const Vector<Gfx::ColorRole>& m_color_roles;
-};
-
-int main(int argc, char** argv)
-{
-
-    if (pledge("stdio thread rpath accept cpath wpath shared_buffer unix fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio thread rpath accept shared_buffer", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil(nullptr, nullptr) < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    auto app_icon = GUI::Icon::default_icon("app-theme-editor");
-
-    Gfx::Palette preview_palette = app->palette();
-
-    auto window = GUI::Window::construct();
-    auto& main_widget = window->set_main_widget<GUI::Widget>();
-    main_widget.set_fill_with_background_color(true);
-    main_widget.set_layout<GUI::VerticalBoxLayout>();
-
-    auto& preview_widget = main_widget.add<ThemeEditor::PreviewWidget>(app->palette());
-    preview_widget.set_fixed_size(480, 360);
-
-    auto& horizontal_container = main_widget.add<GUI::Widget>();
-    horizontal_container.set_layout<GUI::HorizontalBoxLayout>();
-    horizontal_container.set_fixed_size(480, 20);
-
-    auto& combo_box = horizontal_container.add<GUI::ComboBox>();
-    auto& color_input = horizontal_container.add<GUI::ColorInput>();
-
-    Vector<Gfx::ColorRole> color_roles;
-#define __ENUMERATE_COLOR_ROLE(role) color_roles.append(Gfx::ColorRole::role);
-    ENUMERATE_COLOR_ROLES(__ENUMERATE_COLOR_ROLE)
-#undef __ENUMERATE_COLOR_ROLE
-
-    combo_box.set_only_allow_values_from_model(true);
-    combo_box.set_model(adopt(*new ColorRoleModel(color_roles)));
-    combo_box.on_change = [&](auto&, auto& index) {
-        auto role = static_cast<const ColorRoleModel*>(index.model())->color_role(index);
-        color_input.set_color(preview_palette.color(role));
-    };
-
-    combo_box.set_selected_index((size_t)Gfx::ColorRole::Window - 1);
-
-    color_input.on_change = [&] {
-        auto role = static_cast<const ColorRoleModel*>(combo_box.model())->color_role(combo_box.selected_index());
-        preview_palette.set_color(role, color_input.color());
-        preview_widget.set_preview_palette(preview_palette);
-    };
-
-    window->resize(480, 500);
-    window->show();
-    window->set_title("Theme Editor");
-    window->set_icon(app_icon.bitmap_for_size(16));
-    return app->exec();
-}
diff --git a/Applications/Welcome/BackgroundWidget.cpp b/Applications/Welcome/BackgroundWidget.cpp
deleted file mode 100644
index c64f2fc93b..0000000000
--- a/Applications/Welcome/BackgroundWidget.cpp
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "BackgroundWidget.h"
-#include <LibGUI/Painter.h>
-#include <LibGfx/Color.h>
-#include <LibGfx/Palette.h>
-
-BackgroundWidget::BackgroundWidget()
-{
-}
-
-BackgroundWidget::~BackgroundWidget()
-{
-}
-
-void BackgroundWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(event.rect());
-    painter.fill_rect_with_gradient(event.rect(), Color::from_rgb(0xccdddd), Color::from_rgb(0xdcdcde));
-}
-
-void BackgroundWidget::resize_event(GUI::ResizeEvent& event)
-{
-    GUI::Widget::resize_event(event);
-}
diff --git a/Applications/Welcome/BackgroundWidget.h b/Applications/Welcome/BackgroundWidget.h
deleted file mode 100644
index fea3871edc..0000000000
--- a/Applications/Welcome/BackgroundWidget.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Frame.h>
-
-class BackgroundWidget : public GUI::Frame {
-    C_OBJECT(BackgroundWidget)
-public:
-    virtual ~BackgroundWidget() override;
-
-private:
-    BackgroundWidget();
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void resize_event(GUI::ResizeEvent&) override;
-};
diff --git a/Applications/Welcome/CMakeLists.txt b/Applications/Welcome/CMakeLists.txt
deleted file mode 100644
index e9d1ef3380..0000000000
--- a/Applications/Welcome/CMakeLists.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-set(SOURCES
-    BackgroundWidget.cpp
-    main.cpp
-    TextWidget.cpp
-    UnuncheckableButton.cpp
-)
-
-serenity_bin(Welcome)
-target_link_libraries(Welcome LibGUI)
diff --git a/Applications/Welcome/TextWidget.cpp b/Applications/Welcome/TextWidget.cpp
deleted file mode 100644
index 263d4514f8..0000000000
--- a/Applications/Welcome/TextWidget.cpp
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "TextWidget.h"
-#include <AK/Optional.h>
-#include <AK/String.h>
-#include <AK/StringBuilder.h>
-#include <AK/Vector.h>
-#include <LibGUI/Painter.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/Palette.h>
-
-TextWidget::TextWidget(const StringView& text)
-    : m_text(text)
-{
-    set_frame_thickness(0);
-    set_frame_shadow(Gfx::FrameShadow::Plain);
-    set_frame_shape(Gfx::FrameShape::NoFrame);
-}
-
-TextWidget::~TextWidget()
-{
-}
-
-void TextWidget::set_text(const StringView& text)
-{
-    if (text == m_text)
-        return;
-    m_text = text;
-    wrap_and_set_height();
-    update();
-}
-
-void TextWidget::paint_event(GUI::PaintEvent& event)
-{
-    GUI::Frame::paint_event(event);
-
-    GUI::Painter painter(*this);
-    painter.add_clip_rect(event.rect());
-
-    int indent = 0;
-    if (frame_thickness() > 0)
-        indent = font().glyph_width('x') / 2;
-
-    for (size_t i = 0; i < m_lines.size(); i++) {
-        auto& line = m_lines[i];
-
-        auto text_rect = frame_inner_rect();
-        text_rect.move_by(indent, i * m_line_height);
-        if (!line.is_empty())
-            text_rect.set_width(text_rect.width() - indent * 2);
-
-        if (is_enabled()) {
-            painter.draw_text(text_rect, line, m_text_alignment, palette().color(foreground_role()), Gfx::TextElision::None);
-        } else {
-            painter.draw_text(text_rect.translated(1, 1), line, font(), text_alignment(), Color::White, Gfx::TextElision::Right);
-            painter.draw_text(text_rect, line, font(), text_alignment(), Color::from_rgb(0x808080), Gfx::TextElision::Right);
-        }
-    }
-}
-
-void TextWidget::resize_event(GUI::ResizeEvent& event)
-{
-    wrap_and_set_height();
-    GUI::Widget::resize_event(event);
-}
-
-void TextWidget::wrap_and_set_height()
-{
-    Vector<String> words;
-    Optional<size_t> start;
-    for (size_t i = 0; i < m_text.length(); i++) {
-        auto ch = m_text[i];
-
-        if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n') {
-            if (start.has_value())
-                words.append(m_text.substring(start.value(), i - start.value()));
-            start.clear();
-        } else if (!start.has_value()) {
-            start = i;
-        }
-    }
-    if (start.has_value())
-        words.append(m_text.substring(start.value(), m_text.length() - start.value()));
-
-    auto rect = frame_inner_rect();
-    if (frame_thickness() > 0)
-        rect.set_width(rect.width() - font().glyph_width('x'));
-
-    StringBuilder builder;
-    Vector<String> lines;
-    int line_width = 0;
-    for (auto& word : words) {
-        int word_width = font().width(word);
-        if (line_width != 0)
-            word_width += font().glyph_width('x');
-
-        if (line_width + word_width > rect.width()) {
-            lines.append(builder.to_string());
-            builder.clear();
-            line_width = 0;
-        }
-
-        if (line_width != 0)
-            builder.append(' ');
-        builder.append(word);
-        line_width += word_width;
-    }
-    auto last_line = builder.to_string();
-    if (!last_line.is_empty()) {
-        lines.append(last_line);
-    }
-
-    m_lines = lines;
-
-    set_fixed_height(m_lines.size() * m_line_height + frame_thickness() * 2);
-}
diff --git a/Applications/Welcome/TextWidget.h b/Applications/Welcome/TextWidget.h
deleted file mode 100644
index c4353096ff..0000000000
--- a/Applications/Welcome/TextWidget.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/String.h>
-#include <AK/Vector.h>
-#include <LibGUI/Frame.h>
-#include <LibGfx/TextAlignment.h>
-
-class TextWidget : public GUI::Frame {
-    C_OBJECT(TextWidget);
-
-public:
-    virtual ~TextWidget() override;
-
-    String text() const { return m_text; }
-    void set_text(const StringView&);
-
-    Gfx::TextAlignment text_alignment() const { return m_text_alignment; }
-    void set_text_alignment(Gfx::TextAlignment text_alignment) { m_text_alignment = text_alignment; }
-
-    bool should_wrap() const { return m_should_wrap; }
-    void set_should_wrap(bool should_wrap) { m_should_wrap = should_wrap; }
-
-    int line_height() const { return m_line_height; }
-    void set_line_height(int line_height) { m_line_height = line_height; }
-
-    void wrap_and_set_height();
-
-private:
-    explicit TextWidget(const StringView& text = {});
-
-    virtual void paint_event(GUI::PaintEvent&) override;
-    virtual void resize_event(GUI::ResizeEvent&) override;
-
-    String m_text;
-    Vector<String> m_lines;
-    Gfx::TextAlignment m_text_alignment { Gfx::TextAlignment::Center };
-    bool m_should_wrap { false };
-    int m_line_height { 0 };
-};
diff --git a/Applications/Welcome/UnuncheckableButton.cpp b/Applications/Welcome/UnuncheckableButton.cpp
deleted file mode 100644
index 29194fff81..0000000000
--- a/Applications/Welcome/UnuncheckableButton.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "UnuncheckableButton.h"
-
-UnuncheckableButton::UnuncheckableButton()
-{
-}
-
-UnuncheckableButton::~UnuncheckableButton()
-{
-}
diff --git a/Applications/Welcome/UnuncheckableButton.h b/Applications/Welcome/UnuncheckableButton.h
deleted file mode 100644
index b91a41ef9c..0000000000
--- a/Applications/Welcome/UnuncheckableButton.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibGUI/Button.h>
-
-class UnuncheckableButton : public GUI::Button {
-    C_OBJECT(UnuncheckableButton)
-public:
-    virtual ~UnuncheckableButton() override;
-
-    virtual bool is_uncheckable() const override { return false; }
-
-private:
-    UnuncheckableButton();
-};
diff --git a/Applications/Welcome/main.cpp b/Applications/Welcome/main.cpp
deleted file mode 100644
index 101b35fd97..0000000000
--- a/Applications/Welcome/main.cpp
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "BackgroundWidget.h"
-#include "TextWidget.h"
-#include "UnuncheckableButton.h"
-#include <AK/ByteBuffer.h>
-#include <AK/Optional.h>
-#include <AK/String.h>
-#include <AK/StringBuilder.h>
-#include <AK/Vector.h>
-#include <LibCore/File.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/ImageWidget.h>
-#include <LibGUI/Label.h>
-#include <LibGUI/MessageBox.h>
-#include <LibGUI/StackWidget.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/Font.h>
-#include <LibGfx/FontDatabase.h>
-#include <stdio.h>
-#include <unistd.h>
-
-struct ContentPage {
-    String menu_name;
-    String title;
-    String icon = String::empty();
-    Vector<String> content;
-};
-
-static Optional<Vector<ContentPage>> parse_welcome_file(const String& path)
-{
-    auto file = Core::File::construct(path);
-    if (!file->open(Core::IODevice::ReadOnly))
-        return {};
-
-    Vector<ContentPage> pages;
-    StringBuilder current_output_line;
-    bool started = false;
-    ContentPage current;
-    while (file->can_read_line()) {
-        auto line = file->read_line();
-        if (line.is_empty()) {
-            if (!current_output_line.to_string().is_empty())
-                current.content.append(current_output_line.to_string());
-            current_output_line.clear();
-            continue;
-        }
-        switch (line[0]) {
-        case '*':
-            dbgln("menu_item line:\t{}", line);
-            if (started)
-                pages.append(current);
-            else
-                started = true;
-
-            current = {};
-            current.menu_name = line.substring(2, line.length() - 2);
-            break;
-        case '$':
-            dbgln("icon line: \t{}", line);
-            current.icon = line.substring(2, line.length() - 2);
-            break;
-        case '>':
-            dbgln("title line:\t{}", line);
-            current.title = line.substring(2, line.length() - 2);
-            break;
-        case '#':
-            dbgln("comment line:\t{}", line);
-            break;
-        default:
-            dbgln("content line:\t", line);
-            if (current_output_line.length() != 0)
-                current_output_line.append(' ');
-            current_output_line.append(line);
-            break;
-        }
-    }
-
-    if (started) {
-        current.content.append(current_output_line.to_string());
-        pages.append(current);
-    }
-
-    return pages;
-}
-
-int main(int argc, char** argv)
-{
-    if (pledge("stdio shared_buffer rpath unix cpath fattr", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    auto app = GUI::Application::construct(argc, argv);
-
-    if (pledge("stdio shared_buffer rpath", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    unveil(nullptr, nullptr);
-
-    Optional<Vector<ContentPage>> _pages = parse_welcome_file("/res/welcome.txt");
-    if (!_pages.has_value()) {
-        GUI::MessageBox::show(nullptr, "Could not open Welcome file.", "Welcome", GUI::MessageBox::Type::Error);
-        return 1;
-    }
-    auto pages = _pages.value();
-
-    auto window = GUI::Window::construct();
-    window->set_title("Welcome");
-    window->resize(640, 360);
-    window->center_on_screen();
-
-    auto& background = window->set_main_widget<BackgroundWidget>();
-    background.set_fill_with_background_color(false);
-    background.set_layout<GUI::VerticalBoxLayout>();
-    background.layout()->set_margins({ 16, 8, 16, 8 });
-    background.layout()->set_spacing(8);
-
-    //
-    // header
-    //
-
-    auto& header = background.add<GUI::Label>();
-    header.set_font(Gfx::Font::load_from_file("/res/fonts/PebbletonBold14.font"));
-    header.set_text("Welcome to SerenityOS!");
-    header.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-    header.set_fixed_height(30);
-
-    //
-    // main section
-    //
-
-    auto& main_section = background.add<GUI::Widget>();
-    main_section.set_layout<GUI::HorizontalBoxLayout>();
-    main_section.layout()->set_margins({ 0, 0, 0, 0 });
-    main_section.layout()->set_spacing(8);
-
-    auto& menu = main_section.add<GUI::Widget>();
-    menu.set_layout<GUI::VerticalBoxLayout>();
-    menu.layout()->set_margins({ 0, 0, 0, 0 });
-    menu.layout()->set_spacing(4);
-    menu.set_fixed_width(100);
-
-    auto& stack = main_section.add<GUI::StackWidget>();
-
-    bool first = true;
-    for (auto& page : pages) {
-        auto& content = stack.add<GUI::Widget>();
-        content.set_layout<GUI::VerticalBoxLayout>();
-        content.layout()->set_margins({ 0, 0, 0, 0 });
-        content.layout()->set_spacing(8);
-
-        auto& title_box = content.add<GUI::Widget>();
-        title_box.set_layout<GUI::HorizontalBoxLayout>();
-        title_box.layout()->set_spacing(4);
-        title_box.set_fixed_height(16);
-
-        if (!page.icon.is_empty()) {
-            auto& icon = title_box.add<GUI::ImageWidget>();
-            icon.set_fixed_size(16, 16);
-            icon.load_from_file(page.icon);
-        }
-
-        auto& content_title = title_box.add<GUI::Label>();
-        content_title.set_font(Gfx::FontDatabase::default_bold_font());
-        content_title.set_text(page.title);
-        content_title.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-        content_title.set_fixed_height(10);
-
-        for (auto& paragraph : page.content) {
-            auto& content_text = content.add<TextWidget>();
-            content_text.set_font(Gfx::FontDatabase::default_font());
-            content_text.set_text(paragraph);
-            content_text.set_text_alignment(Gfx::TextAlignment::TopLeft);
-            content_text.set_line_height(12);
-            content_text.wrap_and_set_height();
-        }
-
-        auto& menu_option = menu.add<UnuncheckableButton>();
-        menu_option.set_font(Gfx::FontDatabase::default_font());
-        menu_option.set_text(page.menu_name);
-        menu_option.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-        menu_option.set_fixed_height(20);
-        menu_option.set_checkable(true);
-        menu_option.set_exclusive(true);
-
-        if (first)
-            menu_option.set_checked(true);
-
-        menu_option.on_click = [content = &content, &stack](auto) {
-            stack.set_active_widget(content);
-            content->invalidate_layout();
-        };
-
-        first = false;
-    }
-
-    window->show();
-    return app->exec();
-}