Libraries: Use default constructors/destructors in LibGUI

https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules

"The compiler is more likely to get the default semantics right and
you cannot implement these functions better than the compiler."

146 files changed, 271 insertions, 462 deletions

diff --git a/Userland/Libraries/LibGUI/AboutDialog.cpp b/Userland/Libraries/LibGUI/AboutDialog.cpp
index 9791cb618f..c0ae44b967 100644
--- a/Userland/Libraries/LibGUI/AboutDialog.cpp
+++ b/Userland/Libraries/LibGUI/AboutDialog.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -85,8 +86,4 @@ AboutDialog::AboutDialog(StringView name, const Gfx::Bitmap* icon, Window* paren
     };
 }
 
-AboutDialog::~AboutDialog()
-{
-}
-
 }
diff --git a/Userland/Libraries/LibGUI/AboutDialog.h b/Userland/Libraries/LibGUI/AboutDialog.h
index 840ae8295e..4fb3ac3ee4 100644
--- a/Userland/Libraries/LibGUI/AboutDialog.h
+++ b/Userland/Libraries/LibGUI/AboutDialog.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ namespace GUI {
 class AboutDialog final : public Dialog {
     C_OBJECT(AboutDialog)
 public:
-    virtual ~AboutDialog() override;
+    virtual ~AboutDialog() override = default;
 
     static void show(StringView name, const Gfx::Bitmap* icon = nullptr, Window* parent_window = nullptr, const Gfx::Bitmap* window_icon = nullptr, StringView version = Core::Version::SERENITY_VERSION)
     {
diff --git a/Userland/Libraries/LibGUI/AbstractButton.cpp b/Userland/Libraries/LibGUI/AbstractButton.cpp
index 2a682f30ab..4697c490b0 100644
--- a/Userland/Libraries/LibGUI/AbstractButton.cpp
+++ b/Userland/Libraries/LibGUI/AbstractButton.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -32,10 +33,6 @@ AbstractButton::AbstractButton(String text)
     REGISTER_BOOL_PROPERTY("exclusive", is_exclusive, set_exclusive);
 }
 
-AbstractButton::~AbstractButton()
-{
-}
-
 void AbstractButton::set_text(String text)
 {
     if (m_text == text)
diff --git a/Userland/Libraries/LibGUI/AbstractButton.h b/Userland/Libraries/LibGUI/AbstractButton.h
index 649d713dd2..40c3b71d56 100644
--- a/Userland/Libraries/LibGUI/AbstractButton.h
+++ b/Userland/Libraries/LibGUI/AbstractButton.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,7 +16,7 @@ class AbstractButton : public Widget {
     C_OBJECT_ABSTRACT(AbstractButton);
 
 public:
-    virtual ~AbstractButton() override;
+    virtual ~AbstractButton() override = default;
 
     Function<void(bool)> on_checked;
 
diff --git a/Userland/Libraries/LibGUI/AbstractScrollableWidget.cpp b/Userland/Libraries/LibGUI/AbstractScrollableWidget.cpp
index 77ec27eda2..b1a022f1a9 100644
--- a/Userland/Libraries/LibGUI/AbstractScrollableWidget.cpp
+++ b/Userland/Libraries/LibGUI/AbstractScrollableWidget.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -37,10 +38,6 @@ AbstractScrollableWidget::AbstractScrollableWidget()
     };
 }
 
-AbstractScrollableWidget::~AbstractScrollableWidget()
-{
-}
-
 void AbstractScrollableWidget::handle_wheel_event(MouseEvent& event, Widget& event_source)
 {
     if (!m_scrollbars_enabled) {
diff --git a/Userland/Libraries/LibGUI/AbstractScrollableWidget.h b/Userland/Libraries/LibGUI/AbstractScrollableWidget.h
index 01a6647abb..fdc3ff5d12 100644
--- a/Userland/Libraries/LibGUI/AbstractScrollableWidget.h
+++ b/Userland/Libraries/LibGUI/AbstractScrollableWidget.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,7 +16,7 @@ class AbstractScrollableWidget : public Frame {
     C_OBJECT_ABSTRACT(AbstractScrollableWidget);
 
 public:
-    virtual ~AbstractScrollableWidget() override;
+    virtual ~AbstractScrollableWidget() override = default;
 
     Gfx::IntSize content_size() const { return m_content_size; }
     int content_width() const { return m_content_size.width(); }
diff --git a/Userland/Libraries/LibGUI/AbstractSlider.cpp b/Userland/Libraries/LibGUI/AbstractSlider.cpp
index 97b353b3c4..9759df20fe 100644
--- a/Userland/Libraries/LibGUI/AbstractSlider.cpp
+++ b/Userland/Libraries/LibGUI/AbstractSlider.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -25,10 +26,6 @@ AbstractSlider::AbstractSlider(Orientation orientation)
         { Orientation::Vertical, "Vertical" });
 }
 
-AbstractSlider::~AbstractSlider()
-{
-}
-
 void AbstractSlider::set_orientation(Orientation value)
 {
     if (m_orientation == value)
diff --git a/Userland/Libraries/LibGUI/AbstractSlider.h b/Userland/Libraries/LibGUI/AbstractSlider.h
index 10e3fc829d..83c29254d8 100644
--- a/Userland/Libraries/LibGUI/AbstractSlider.h
+++ b/Userland/Libraries/LibGUI/AbstractSlider.h
@@ -14,7 +14,7 @@ class AbstractSlider : public Widget {
     C_OBJECT_ABSTRACT(AbstractSlider);
 
 public:
-    virtual ~AbstractSlider() override;
+    virtual ~AbstractSlider() override = default;
 
     void set_orientation(Orientation value);
     Orientation orientation() const { return m_orientation; }
diff --git a/Userland/Libraries/LibGUI/AbstractTableView.cpp b/Userland/Libraries/LibGUI/AbstractTableView.cpp
index 91fb4d33bd..eded7cf084 100644
--- a/Userland/Libraries/LibGUI/AbstractTableView.cpp
+++ b/Userland/Libraries/LibGUI/AbstractTableView.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -34,10 +35,6 @@ AbstractTableView::AbstractTableView()
     set_should_hide_unnecessary_scrollbars(true);
 }
 
-AbstractTableView::~AbstractTableView()
-{
-}
-
 void AbstractTableView::select_all()
 {
     selection().clear();
diff --git a/Userland/Libraries/LibGUI/AbstractTableView.h b/Userland/Libraries/LibGUI/AbstractTableView.h
index 996f33487b..d4e43b00ce 100644
--- a/Userland/Libraries/LibGUI/AbstractTableView.h
+++ b/Userland/Libraries/LibGUI/AbstractTableView.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2022, Jakob-Niklas See <git@nwex.de>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -8,12 +9,14 @@
 #pragma once
 
 #include <LibGUI/AbstractView.h>
+#include <LibGUI/Button.h>
+#include <LibGUI/HeaderView.h>
 
 namespace GUI {
 
 class TableCellPaintingDelegate {
 public:
-    virtual ~TableCellPaintingDelegate() { }
+    virtual ~TableCellPaintingDelegate() = default;
 
     virtual bool should_paint(ModelIndex const&) { return true; }
     virtual void paint(Painter&, const Gfx::IntRect&, const Gfx::Palette&, const ModelIndex&) = 0;
@@ -82,7 +85,7 @@ public:
     virtual void model_did_update(unsigned flags) override;
 
 protected:
-    virtual ~AbstractTableView() override;
+    virtual ~AbstractTableView() override = default;
     AbstractTableView();
 
     virtual void mousedown_event(MouseEvent&) override;
diff --git a/Userland/Libraries/LibGUI/Action.h b/Userland/Libraries/LibGUI/Action.h
index 7823796714..b1eca83b7a 100644
--- a/Userland/Libraries/LibGUI/Action.h
+++ b/Userland/Libraries/LibGUI/Action.h
@@ -15,6 +15,7 @@
 #include <AK/WeakPtr.h>
 #include <AK/Weakable.h>
 #include <LibCore/Object.h>
+#include <LibCore/Timer.h>
 #include <LibGUI/Forward.h>
 #include <LibGUI/Shortcut.h>
 #include <LibGfx/Forward.h>
diff --git a/Userland/Libraries/LibGUI/ActionGroup.h b/Userland/Libraries/LibGUI/ActionGroup.h
index 090b7c0d9e..505b413ca2 100644
--- a/Userland/Libraries/LibGUI/ActionGroup.h
+++ b/Userland/Libraries/LibGUI/ActionGroup.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,8 +15,8 @@ namespace GUI {
 
 class ActionGroup : public Weakable<ActionGroup> {
 public:
-    ActionGroup() { }
-    ~ActionGroup() { }
+    ActionGroup() = default;
+    ~ActionGroup() = default;
 
     void add_action(Action&);
     void remove_action(Action&);
diff --git a/Userland/Libraries/LibGUI/AutocompleteProvider.cpp b/Userland/Libraries/LibGUI/AutocompleteProvider.cpp
index 87104bcfc3..82a46800f2 100644
--- a/Userland/Libraries/LibGUI/AutocompleteProvider.cpp
+++ b/Userland/Libraries/LibGUI/AutocompleteProvider.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, the SerenityOS developers.
+ * Copyright (c) 2020-2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -84,8 +84,6 @@ private:
     Vector<AutocompleteProvider::Entry> m_suggestions;
 };
 
-AutocompleteBox::~AutocompleteBox() { }
-
 AutocompleteBox::AutocompleteBox(TextEditor& editor)
     : m_editor(editor)
 {
diff --git a/Userland/Libraries/LibGUI/AutocompleteProvider.h b/Userland/Libraries/LibGUI/AutocompleteProvider.h
index 4bdebc7a2d..d9e9573918 100644
--- a/Userland/Libraries/LibGUI/AutocompleteProvider.h
+++ b/Userland/Libraries/LibGUI/AutocompleteProvider.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, the SerenityOS developers.
+ * Copyright (c) 2020-2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -20,7 +20,7 @@ class AutocompleteProvider {
     AK_MAKE_NONMOVABLE(AutocompleteProvider);
 
 public:
-    virtual ~AutocompleteProvider() { }
+    virtual ~AutocompleteProvider() = default;
 
     enum class Language {
         Unspecified,
@@ -103,7 +103,7 @@ public:
     void detach() { m_editor.clear(); }
 
 protected:
-    AutocompleteProvider() { }
+    AutocompleteProvider() = default;
 
     WeakPtr<TextEditor> m_editor;
 };
@@ -111,7 +111,7 @@ protected:
 class AutocompleteBox final {
 public:
     explicit AutocompleteBox(TextEditor&);
-    ~AutocompleteBox();
+    ~AutocompleteBox() = default;
 
     void update_suggestions(Vector<AutocompleteProvider::Entry>&& suggestions);
     bool is_visible() const;
diff --git a/Userland/Libraries/LibGUI/BoxLayout.h b/Userland/Libraries/LibGUI/BoxLayout.h
index 433c5bf4bb..6e6921d59c 100644
--- a/Userland/Libraries/LibGUI/BoxLayout.h
+++ b/Userland/Libraries/LibGUI/BoxLayout.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -16,7 +17,7 @@ class BoxLayout : public Layout {
     C_OBJECT(BoxLayout);
 
 public:
-    virtual ~BoxLayout() override { }
+    virtual ~BoxLayout() override = default;
 
     Gfx::Orientation orientation() const { return m_orientation; }
 
@@ -41,7 +42,7 @@ private:
         : BoxLayout(Gfx::Orientation::Vertical)
     {
     }
-    virtual ~VerticalBoxLayout() override { }
+    virtual ~VerticalBoxLayout() override = default;
 };
 
 class HorizontalBoxLayout final : public BoxLayout {
@@ -52,7 +53,7 @@ private:
         : BoxLayout(Gfx::Orientation::Horizontal)
     {
     }
-    virtual ~HorizontalBoxLayout() override { }
+    virtual ~HorizontalBoxLayout() override = default;
 };
 
 }
diff --git a/Userland/Libraries/LibGUI/Breadcrumbbar.cpp b/Userland/Libraries/LibGUI/Breadcrumbbar.cpp
index 8c0f29b591..3cf593c470 100644
--- a/Userland/Libraries/LibGUI/Breadcrumbbar.cpp
+++ b/Userland/Libraries/LibGUI/Breadcrumbbar.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -20,7 +21,7 @@ class BreadcrumbButton : public Button {
     C_OBJECT(BreadcrumbButton);
 
 public:
-    virtual ~BreadcrumbButton() override { }
+    virtual ~BreadcrumbButton() override = default;
 
     virtual bool is_uncheckable() const override { return false; }
     virtual void drop_event(DropEvent& event) override
@@ -54,7 +55,7 @@ public:
     Function<void(DragEvent&)> on_drag_enter;
 
 private:
-    BreadcrumbButton() { }
+    BreadcrumbButton() = default;
 };
 
 Breadcrumbbar::Breadcrumbbar()
@@ -63,10 +64,6 @@ Breadcrumbbar::Breadcrumbbar()
     layout.set_spacing(0);
 }
 
-Breadcrumbbar::~Breadcrumbbar()
-{
-}
-
 void Breadcrumbbar::clear_segments()
 {
     m_segments.clear();
diff --git a/Userland/Libraries/LibGUI/Breadcrumbbar.h b/Userland/Libraries/LibGUI/Breadcrumbbar.h
index b07dbe3951..93515eada3 100644
--- a/Userland/Libraries/LibGUI/Breadcrumbbar.h
+++ b/Userland/Libraries/LibGUI/Breadcrumbbar.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ class Breadcrumbbar : public GUI::Widget {
     C_OBJECT(Breadcrumbbar);
 
 public:
-    virtual ~Breadcrumbbar() override;
+    virtual ~Breadcrumbbar() override = default;
 
     void clear_segments();
     void append_segment(String text, Gfx::Bitmap const* icon = nullptr, String data = {}, String tooltip = {});
diff --git a/Userland/Libraries/LibGUI/Button.h b/Userland/Libraries/LibGUI/Button.h
index 5cb06ef25d..73c4102a81 100644
--- a/Userland/Libraries/LibGUI/Button.h
+++ b/Userland/Libraries/LibGUI/Button.h
@@ -8,6 +8,7 @@
 
 #include <AK/Function.h>
 #include <LibGUI/AbstractButton.h>
+#include <LibGUI/Action.h>
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/StylePainter.h>
 #include <LibGfx/TextAlignment.h>
diff --git a/Userland/Libraries/LibGUI/CMakeLists.txt b/Userland/Libraries/LibGUI/CMakeLists.txt
index 48fb661c9b..cc10cbfbd4 100644
--- a/Userland/Libraries/LibGUI/CMakeLists.txt
+++ b/Userland/Libraries/LibGUI/CMakeLists.txt
@@ -26,7 +26,6 @@ set(SOURCES
     CommonActions.cpp
     CommonLocationsProvider.cpp
     ComboBox.cpp
-    Command.cpp
     CommandPalette.cpp
     Desktop.cpp
     Dialog.cpp
diff --git a/Userland/Libraries/LibGUI/Calendar.cpp b/Userland/Libraries/LibGUI/Calendar.cpp
index 229b036551..06f9f2ca1a 100644
--- a/Userland/Libraries/LibGUI/Calendar.cpp
+++ b/Userland/Libraries/LibGUI/Calendar.cpp
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2019-2020, Ryan Grieb <ryan.m.grieb@gmail.com>
- * Copyright (c) 2020-2021, the SerenityOS developers.
+ * Copyright (c) 2020-2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -62,10 +62,6 @@ Calendar::Calendar(Core::DateTime date_time, Mode mode)
     update_tiles(m_selected_date.year(), m_selected_date.month());
 }
 
-Calendar::~Calendar()
-{
-}
-
 void Calendar::set_grid(bool show)
 {
     if (m_grid == show)
diff --git a/Userland/Libraries/LibGUI/Calendar.h b/Userland/Libraries/LibGUI/Calendar.h
index 017a1182b2..72d653fc6e 100644
--- a/Userland/Libraries/LibGUI/Calendar.h
+++ b/Userland/Libraries/LibGUI/Calendar.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2019-2020, Ryan Grieb <ryan.m.grieb@gmail.com>
- * Copyright (c) 2020-2021, the SerenityOS developers.
+ * Copyright (c) 2020-2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -73,7 +73,7 @@ public:
 
 private:
     Calendar(Core::DateTime date_time = Core::DateTime::now(), Mode mode = Month);
-    virtual ~Calendar() override;
+    virtual ~Calendar() override = default;
 
     virtual void resize_event(GUI::ResizeEvent&) override;
     virtual void paint_event(GUI::PaintEvent&) override;
diff --git a/Userland/Libraries/LibGUI/CheckBox.cpp b/Userland/Libraries/LibGUI/CheckBox.cpp
index 2cfd26d88c..207df1f0c0 100644
--- a/Userland/Libraries/LibGUI/CheckBox.cpp
+++ b/Userland/Libraries/LibGUI/CheckBox.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -28,10 +29,6 @@ CheckBox::CheckBox(String text)
     set_fixed_height(22);
 }
 
-CheckBox::~CheckBox()
-{
-}
-
 void CheckBox::paint_event(PaintEvent& event)
 {
     Painter painter(*this);
diff --git a/Userland/Libraries/LibGUI/CheckBox.h b/Userland/Libraries/LibGUI/CheckBox.h
index 6a66300152..bbc882f6a8 100644
--- a/Userland/Libraries/LibGUI/CheckBox.h
+++ b/Userland/Libraries/LibGUI/CheckBox.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ class CheckBox : public AbstractButton {
     C_OBJECT(CheckBox);
 
 public:
-    virtual ~CheckBox() override;
+    virtual ~CheckBox() override = default;
 
     virtual void click(unsigned modifiers = 0) override;
 
diff --git a/Userland/Libraries/LibGUI/ColorInput.cpp b/Userland/Libraries/LibGUI/ColorInput.cpp
index 383df59025..ec52400982 100644
--- a/Userland/Libraries/LibGUI/ColorInput.cpp
+++ b/Userland/Libraries/LibGUI/ColorInput.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -29,10 +30,6 @@ ColorInput::ColorInput()
     REGISTER_BOOL_PROPERTY("has_alpha_channel", has_alpha_channel, set_color_has_alpha_channel);
 }
 
-ColorInput::~ColorInput()
-{
-}
-
 Gfx::IntRect ColorInput::color_rect() const
 {
     auto color_box_padding = 3;
diff --git a/Userland/Libraries/LibGUI/ColorInput.h b/Userland/Libraries/LibGUI/ColorInput.h
index 32c6467838..099478cef5 100644
--- a/Userland/Libraries/LibGUI/ColorInput.h
+++ b/Userland/Libraries/LibGUI/ColorInput.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,7 +16,7 @@ class ColorInput final : public TextEditor {
     C_OBJECT(ColorInput);
 
 public:
-    virtual ~ColorInput() override;
+    virtual ~ColorInput() override = default;
 
     bool has_alpha_channel() const { return m_color_has_alpha_channel; }
     void set_color_has_alpha_channel(bool has_alpha) { m_color_has_alpha_channel = has_alpha; }
diff --git a/Userland/Libraries/LibGUI/ColorPicker.cpp b/Userland/Libraries/LibGUI/ColorPicker.cpp
index 4736c451e2..3711d7858e 100644
--- a/Userland/Libraries/LibGUI/ColorPicker.cpp
+++ b/Userland/Libraries/LibGUI/ColorPicker.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -22,7 +23,7 @@ class ColorButton : public AbstractButton {
     C_OBJECT(ColorButton);
 
 public:
-    virtual ~ColorButton() override;
+    virtual ~ColorButton() override = default;
 
     void set_selected(bool selected);
     Color color() const { return m_color; }
@@ -146,7 +147,7 @@ public:
         return m_col;
     }
 
-    virtual ~ColorSelectOverlay() override { }
+    virtual ~ColorSelectOverlay() override = default;
     Function<void(Color)> on_color_changed;
 
 private:
@@ -193,10 +194,6 @@ ColorPicker::ColorPicker(Color color, Window* parent_window, String title)
     build_ui();
 }
 
-ColorPicker::~ColorPicker()
-{
-}
-
 void ColorPicker::set_color_has_alpha_channel(bool has_alpha)
 {
     if (m_color_has_alpha_channel == has_alpha)
@@ -458,10 +455,6 @@ ColorButton::ColorButton(ColorPicker& picker, Color color)
     m_color = color;
 }
 
-ColorButton::~ColorButton()
-{
-}
-
 void ColorButton::set_selected(bool selected)
 {
     m_selected = selected;
diff --git a/Userland/Libraries/LibGUI/ColorPicker.h b/Userland/Libraries/LibGUI/ColorPicker.h
index fb9ed0eee3..2021e85851 100644
--- a/Userland/Libraries/LibGUI/ColorPicker.h
+++ b/Userland/Libraries/LibGUI/ColorPicker.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -20,7 +21,7 @@ class ColorPicker final : public Dialog {
     C_OBJECT(ColorPicker)
 
 public:
-    virtual ~ColorPicker() override;
+    virtual ~ColorPicker() override = default;
 
     bool color_has_alpha_channel() const { return m_color_has_alpha_channel; }
     void set_color_has_alpha_channel(bool);
diff --git a/Userland/Libraries/LibGUI/ColumnsView.cpp b/Userland/Libraries/LibGUI/ColumnsView.cpp
index 6b409656ac..67ba0bce1b 100644
--- a/Userland/Libraries/LibGUI/ColumnsView.cpp
+++ b/Userland/Libraries/LibGUI/ColumnsView.cpp
@@ -35,10 +35,6 @@ ColumnsView::ColumnsView()
     m_columns.append({ {}, 0 });
 }
 
-ColumnsView::~ColumnsView()
-{
-}
-
 void ColumnsView::select_all()
 {
     Vector<Column> columns_for_selection;
diff --git a/Userland/Libraries/LibGUI/ColumnsView.h b/Userland/Libraries/LibGUI/ColumnsView.h
index d0c7a29dee..3f37463106 100644
--- a/Userland/Libraries/LibGUI/ColumnsView.h
+++ b/Userland/Libraries/LibGUI/ColumnsView.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Sergey Bugaev <bugaevc@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -23,7 +24,7 @@ public:
 
 private:
     ColumnsView();
-    virtual ~ColumnsView() override;
+    virtual ~ColumnsView() override = default;
     void push_column(const ModelIndex& parent_index);
     void update_column_sizes();
 
diff --git a/Userland/Libraries/LibGUI/ComboBox.cpp b/Userland/Libraries/LibGUI/ComboBox.cpp
index 8060764999..294461fc45 100644
--- a/Userland/Libraries/LibGUI/ComboBox.cpp
+++ b/Userland/Libraries/LibGUI/ComboBox.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -137,9 +138,7 @@ ComboBox::ComboBox()
     };
 }
 
-ComboBox::~ComboBox()
-{
-}
+ComboBox::~ComboBox() = default;
 
 void ComboBox::set_editor_placeholder(StringView placeholder)
 {
diff --git a/Userland/Libraries/LibGUI/Command.cpp b/Userland/Libraries/LibGUI/Command.cpp
deleted file mode 100644
index c13917e926..0000000000
--- a/Userland/Libraries/LibGUI/Command.cpp
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#include <LibGUI/Command.h>
-
-namespace GUI {
-
-Command::~Command()
-{
-}
-
-}
diff --git a/Userland/Libraries/LibGUI/Command.h b/Userland/Libraries/LibGUI/Command.h
index e7db7d7678..1bff5a10d0 100644
--- a/Userland/Libraries/LibGUI/Command.h
+++ b/Userland/Libraries/LibGUI/Command.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -12,7 +13,7 @@ namespace GUI {
 
 class Command {
 public:
-    virtual ~Command();
+    virtual ~Command() = default;
 
     virtual void undo() { }
     virtual void redo() { }
@@ -21,7 +22,7 @@ public:
     virtual bool merge_with(Command const&) { return false; }
 
 protected:
-    Command() { }
+    Command() = default;
 };
 
 }
diff --git a/Userland/Libraries/LibGUI/CommandPalette.cpp b/Userland/Libraries/LibGUI/CommandPalette.cpp
index 78ac413071..81b502e400 100644
--- a/Userland/Libraries/LibGUI/CommandPalette.cpp
+++ b/Userland/Libraries/LibGUI/CommandPalette.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2022, Jakob-Niklas See <git@nwex.de>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -34,7 +35,7 @@ AK_ENUM_BITWISE_OPERATORS(IconFlags);
 
 class ActionIconDelegate final : public GUI::TableCellPaintingDelegate {
 public:
-    virtual ~ActionIconDelegate() override { }
+    virtual ~ActionIconDelegate() override = default;
 
     bool should_paint(ModelIndex const& index) override
     {
@@ -76,7 +77,7 @@ public:
     {
     }
 
-    virtual ~ActionModel() override { }
+    virtual ~ActionModel() override = default;
 
     virtual int row_count(ModelIndex const& parent_index) const override
     {
@@ -218,10 +219,6 @@ CommandPalette::CommandPalette(GUI::Window& parent_window, ScreenPosition screen
     m_text_box->set_focus(true);
 }
 
-CommandPalette::~CommandPalette()
-{
-}
-
 void CommandPalette::collect_actions(GUI::Window& parent_window)
 {
     OrderedHashTable<NonnullRefPtr<GUI::Action>> actions;
diff --git a/Userland/Libraries/LibGUI/CommandPalette.h b/Userland/Libraries/LibGUI/CommandPalette.h
index 998f7f489e..5e1853c7ab 100644
--- a/Userland/Libraries/LibGUI/CommandPalette.h
+++ b/Userland/Libraries/LibGUI/CommandPalette.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -20,7 +21,7 @@ public:
 
 private:
     explicit CommandPalette(GUI::Window& parent_window, ScreenPosition screen_position = CenterWithinParent);
-    virtual ~CommandPalette() override;
+    virtual ~CommandPalette() override = default;
 
     void collect_actions(GUI::Window& parent_window);
     void finish_with_index(GUI::ModelIndex const&);
diff --git a/Userland/Libraries/LibGUI/Desktop.cpp b/Userland/Libraries/LibGUI/Desktop.cpp
index 81003eeae1..f962a005c9 100644
--- a/Userland/Libraries/LibGUI/Desktop.cpp
+++ b/Userland/Libraries/LibGUI/Desktop.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -21,10 +22,6 @@ Desktop& Desktop::the()
     return s_the;
 }
 
-Desktop::Desktop()
-{
-}
-
 void Desktop::did_receive_screen_rects(Badge<ConnectionToWindowServer>, const Vector<Gfx::IntRect, 4>& rects, size_t main_screen_index, unsigned workspace_rows, unsigned workspace_columns)
 {
     m_main_screen_index = main_screen_index;
diff --git a/Userland/Libraries/LibGUI/Desktop.h b/Userland/Libraries/LibGUI/Desktop.h
index 788aef4785..82f5143fb3 100644
--- a/Userland/Libraries/LibGUI/Desktop.h
+++ b/Userland/Libraries/LibGUI/Desktop.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -23,7 +24,7 @@ public:
     static constexpr size_t default_screen_rect_count = 4;
 
     static Desktop& the();
-    Desktop();
+    Desktop() = default;
 
     void set_background_color(StringView background_color);
 
diff --git a/Userland/Libraries/LibGUI/Dialog.cpp b/Userland/Libraries/LibGUI/Dialog.cpp
index 2993433d12..07d6cdb36c 100644
--- a/Userland/Libraries/LibGUI/Dialog.cpp
+++ b/Userland/Libraries/LibGUI/Dialog.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -19,10 +20,6 @@ Dialog::Dialog(Window* parent_window, ScreenPosition screen_position)
     set_minimizable(false);
 }
 
-Dialog::~Dialog()
-{
-}
-
 int Dialog::exec()
 {
     VERIFY(!m_event_loop);
diff --git a/Userland/Libraries/LibGUI/Dialog.h b/Userland/Libraries/LibGUI/Dialog.h
index 8fccf6ab50..259e346261 100644
--- a/Userland/Libraries/LibGUI/Dialog.h
+++ b/Userland/Libraries/LibGUI/Dialog.h
@@ -1,11 +1,13 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
 #pragma once
 
+#include <LibCore/EventLoop.h>
 #include <LibGUI/Window.h>
 
 namespace GUI {
@@ -36,7 +38,7 @@ public:
         BottomRight = 9,
     };
 
-    virtual ~Dialog() override;
+    virtual ~Dialog() override = default;
 
     int exec();
 
diff --git a/Userland/Libraries/LibGUI/DragOperation.cpp b/Userland/Libraries/LibGUI/DragOperation.cpp
index c521f90bdc..839b1f8aef 100644
--- a/Userland/Libraries/LibGUI/DragOperation.cpp
+++ b/Userland/Libraries/LibGUI/DragOperation.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -20,10 +21,6 @@ DragOperation::DragOperation(Core::Object* parent)
 {
 }
 
-DragOperation::~DragOperation()
-{
-}
-
 DragOperation::Outcome DragOperation::exec()
 {
     VERIFY(!s_current_drag_operation);
diff --git a/Userland/Libraries/LibGUI/DragOperation.h b/Userland/Libraries/LibGUI/DragOperation.h
index 7b9107c577..647e728d7c 100644
--- a/Userland/Libraries/LibGUI/DragOperation.h
+++ b/Userland/Libraries/LibGUI/DragOperation.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -23,7 +24,7 @@ public:
         Cancelled,
     };
 
-    virtual ~DragOperation() override;
+    virtual ~DragOperation() override = default;
 
     void set_mime_data(RefPtr<Core::MimeData> mime_data) { m_mime_data = move(mime_data); }
     void set_text(const String& text);
diff --git a/Userland/Libraries/LibGUI/EditingEngine.cpp b/Userland/Libraries/LibGUI/EditingEngine.cpp
index 9a4526f441..0141ffee11 100644
--- a/Userland/Libraries/LibGUI/EditingEngine.cpp
+++ b/Userland/Libraries/LibGUI/EditingEngine.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, the SerenityOS developers.
+ * Copyright (c) 2021-2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -21,10 +21,6 @@ constexpr bool is_vim_punctuation(u32 code_point)
     return is_ascii_punctuation(code_point) && code_point != '_';
 }
 
-EditingEngine::~EditingEngine()
-{
-}
-
 void EditingEngine::attach(TextEditor& editor)
 {
     VERIFY(!m_editor);
diff --git a/Userland/Libraries/LibGUI/EditingEngine.h b/Userland/Libraries/LibGUI/EditingEngine.h
index a7588191b7..3b0e617cc7 100644
--- a/Userland/Libraries/LibGUI/EditingEngine.h
+++ b/Userland/Libraries/LibGUI/EditingEngine.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, the SerenityOS developers.
+ * Copyright (c) 2021-2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -27,7 +27,7 @@ class EditingEngine {
     AK_MAKE_NONMOVABLE(EditingEngine);
 
 public:
-    virtual ~EditingEngine();
+    virtual ~EditingEngine() = default;
 
     virtual CursorWidth cursor_width() const { return NARROW; }
 
@@ -46,7 +46,7 @@ public:
     bool is_vim() const { return engine_type() == EngineType::Vim; }
 
 protected:
-    EditingEngine() { }
+    EditingEngine() = default;
 
     WeakPtr<TextEditor> m_editor;
 
diff --git a/Userland/Libraries/LibGUI/Event.cpp b/Userland/Libraries/LibGUI/Event.cpp
index 7cc272becd..414e21576d 100644
--- a/Userland/Libraries/LibGUI/Event.cpp
+++ b/Userland/Libraries/LibGUI/Event.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -19,10 +20,6 @@ DropEvent::DropEvent(const Gfx::IntPoint& position, const String& text, NonnullR
 {
 }
 
-DropEvent::~DropEvent()
-{
-}
-
 String KeyEvent::to_string() const
 {
     Vector<String, 8> parts;
@@ -56,8 +53,4 @@ ActionEvent::ActionEvent(Type type, Action& action)
 {
 }
 
-ActionEvent::~ActionEvent()
-{
-}
-
 }
diff --git a/Userland/Libraries/LibGUI/Event.h b/Userland/Libraries/LibGUI/Event.h
index 20340ec04e..d3018b2dfa 100644
--- a/Userland/Libraries/LibGUI/Event.h
+++ b/Userland/Libraries/LibGUI/Event.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -72,12 +73,12 @@ public:
         __End_WM_Events,
     };
 
-    Event() { }
+    Event() = default;
     explicit Event(Type type)
         : Core::Event(type)
     {
     }
-    virtual ~Event() { }
+    virtual ~Event() = default;
 
     bool is_key_event() const { return type() == KeyUp || type() == KeyDown; }
     bool is_paint_event() const { return type() == Paint; }
@@ -454,7 +455,7 @@ class DropEvent final : public Event {
 public:
     DropEvent(const Gfx::IntPoint&, const String& text, NonnullRefPtr<Core::MimeData> mime_data);
 
-    ~DropEvent();
+    ~DropEvent() = default;
 
     const Gfx::IntPoint& position() const { return m_position; }
     const String& text() const { return m_text; }
@@ -530,7 +531,7 @@ private:
 class ActionEvent final : public Event {
 public:
     ActionEvent(Type, Action&);
-    ~ActionEvent();
+    ~ActionEvent() = default;
 
     Action const& action() const { return *m_action; }
     Action& action() { return *m_action; }
diff --git a/Userland/Libraries/LibGUI/FileSystemModel.cpp b/Userland/Libraries/LibGUI/FileSystemModel.cpp
index 89840db8b2..1bf7fbcc04 100644
--- a/Userland/Libraries/LibGUI/FileSystemModel.cpp
+++ b/Userland/Libraries/LibGUI/FileSystemModel.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -271,10 +272,6 @@ FileSystemModel::FileSystemModel(String root_path, Mode mode)
     invalidate();
 }
 
-FileSystemModel::~FileSystemModel()
-{
-}
-
 String FileSystemModel::name_for_uid(uid_t uid) const
 {
     auto it = m_user_names.find(uid);
diff --git a/Userland/Libraries/LibGUI/FileSystemModel.h b/Userland/Libraries/LibGUI/FileSystemModel.h
index 4eede5e947..6fd6c9baf4 100644
--- a/Userland/Libraries/LibGUI/FileSystemModel.h
+++ b/Userland/Libraries/LibGUI/FileSystemModel.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -43,7 +44,7 @@ public:
     };
 
     struct Node {
-        ~Node() { }
+        ~Node() = default;
 
         String name;
         String symlink_target;
@@ -102,7 +103,7 @@ public:
     {
         return adopt_ref(*new FileSystemModel(root_path, mode));
     }
-    virtual ~FileSystemModel() override;
+    virtual ~FileSystemModel() override = default;
 
     String root_path() const { return m_root_path; }
     void set_root_path(String);
diff --git a/Userland/Libraries/LibGUI/FontPicker.cpp b/Userland/Libraries/LibGUI/FontPicker.cpp
index 98f231076d..6def60e8f4 100644
--- a/Userland/Libraries/LibGUI/FontPicker.cpp
+++ b/Userland/Libraries/LibGUI/FontPicker.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -169,10 +170,6 @@ FontPicker::FontPicker(Window* parent_window, const Gfx::Font* current_font, boo
     set_font(current_font);
 }
 
-FontPicker::~FontPicker()
-{
-}
-
 void FontPicker::set_font(const Gfx::Font* font)
 {
     if (m_font == font)
diff --git a/Userland/Libraries/LibGUI/FontPicker.h b/Userland/Libraries/LibGUI/FontPicker.h
index 087f0a469e..a40a28f168 100644
--- a/Userland/Libraries/LibGUI/FontPicker.h
+++ b/Userland/Libraries/LibGUI/FontPicker.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -16,7 +17,7 @@ class FontPicker final : public GUI::Dialog {
     C_OBJECT(FontPicker);
 
 public:
-    virtual ~FontPicker() override;
+    virtual ~FontPicker() override = default;
 
     RefPtr<Gfx::Font> font() const { return m_font; }
     void set_font(const Gfx::Font*);
diff --git a/Userland/Libraries/LibGUI/Frame.cpp b/Userland/Libraries/LibGUI/Frame.cpp
index d82bf4d7fe..cf5d676fbe 100644
--- a/Userland/Libraries/LibGUI/Frame.cpp
+++ b/Userland/Libraries/LibGUI/Frame.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -32,10 +33,6 @@ Frame::Frame()
         { Gfx::FrameShape::Window, "Window" });
 }
 
-Frame::~Frame()
-{
-}
-
 void Frame::set_frame_thickness(int thickness)
 {
     if (m_thickness == thickness)
diff --git a/Userland/Libraries/LibGUI/Frame.h b/Userland/Libraries/LibGUI/Frame.h
index 321d920d10..5bd7ead299 100644
--- a/Userland/Libraries/LibGUI/Frame.h
+++ b/Userland/Libraries/LibGUI/Frame.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ namespace GUI {
 class Frame : public Widget {
     C_OBJECT(Frame)
 public:
-    virtual ~Frame() override;
+    virtual ~Frame() override = default;
 
     int frame_thickness() const { return m_thickness; }
     void set_frame_thickness(int thickness);
diff --git a/Userland/Libraries/LibGUI/GML/AutocompleteProvider.h b/Userland/Libraries/LibGUI/GML/AutocompleteProvider.h
index 98dfe35a07..f3008b8517 100644
--- a/Userland/Libraries/LibGUI/GML/AutocompleteProvider.h
+++ b/Userland/Libraries/LibGUI/GML/AutocompleteProvider.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -12,8 +13,8 @@ namespace GUI::GML {
 
 class AutocompleteProvider final : public virtual GUI::AutocompleteProvider {
 public:
-    AutocompleteProvider() { }
-    virtual ~AutocompleteProvider() override { }
+    AutocompleteProvider() = default;
+    virtual ~AutocompleteProvider() override = default;
 
 private:
     static bool can_have_declared_layout(StringView class_name)
diff --git a/Userland/Libraries/LibGUI/GML/SyntaxHighlighter.cpp b/Userland/Libraries/LibGUI/GML/SyntaxHighlighter.cpp
index 4a6e3f3344..41c9de0446 100644
--- a/Userland/Libraries/LibGUI/GML/SyntaxHighlighter.cpp
+++ b/Userland/Libraries/LibGUI/GML/SyntaxHighlighter.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -77,8 +78,4 @@ bool SyntaxHighlighter::token_types_equal(u64 token1, u64 token2) const
     return static_cast<Token::Type>(token1) == static_cast<Token::Type>(token2);
 }
 
-SyntaxHighlighter::~SyntaxHighlighter()
-{
-}
-
 }
diff --git a/Userland/Libraries/LibGUI/GML/SyntaxHighlighter.h b/Userland/Libraries/LibGUI/GML/SyntaxHighlighter.h
index 5b52bdacf2..0c2961e90a 100644
--- a/Userland/Libraries/LibGUI/GML/SyntaxHighlighter.h
+++ b/Userland/Libraries/LibGUI/GML/SyntaxHighlighter.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -12,8 +13,8 @@ namespace GUI::GML {
 
 class SyntaxHighlighter final : public Syntax::Highlighter {
 public:
-    SyntaxHighlighter() { }
-    virtual ~SyntaxHighlighter() override;
+    SyntaxHighlighter() = default;
+    virtual ~SyntaxHighlighter() override = default;
 
     virtual bool is_identifier(u64) const override;
 
diff --git a/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.cpp b/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.cpp
index dbceb07550..abc597861c 100644
--- a/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.cpp
+++ b/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2022, Brian Gianforcaro <bgianf@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -52,8 +53,4 @@ bool GitCommitSyntaxHighlighter::token_types_equal(u64 token1, u64 token2) const
     return static_cast<GUI::GitCommitToken::Type>(token1) == static_cast<GUI::GitCommitToken::Type>(token2);
 }
 
-GitCommitSyntaxHighlighter::~GitCommitSyntaxHighlighter()
-{
-}
-
 }
diff --git a/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.h b/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.h
index 3e9cec60a7..1153e8b9a9 100644
--- a/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.h
+++ b/Userland/Libraries/LibGUI/GitCommitSyntaxHighlighter.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2022, Brian Gianforcaro <bgianf@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -12,8 +13,8 @@ namespace GUI {
 
 class GitCommitSyntaxHighlighter final : public Syntax::Highlighter {
 public:
-    GitCommitSyntaxHighlighter() { }
-    virtual ~GitCommitSyntaxHighlighter() override;
+    GitCommitSyntaxHighlighter() = default;
+    virtual ~GitCommitSyntaxHighlighter() override = default;
 
     virtual Syntax::Language language() const override { return Syntax::Language::GitCommit; }
     virtual void rehighlight(Palette const&) override;
diff --git a/Userland/Libraries/LibGUI/GlyphMapWidget.cpp b/Userland/Libraries/LibGUI/GlyphMapWidget.cpp
index a023d2301e..ec15920ae0 100644
--- a/Userland/Libraries/LibGUI/GlyphMapWidget.cpp
+++ b/Userland/Libraries/LibGUI/GlyphMapWidget.cpp
@@ -2,6 +2,7 @@
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
  * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -55,10 +56,6 @@ GlyphMapWidget::GlyphMapWidget()
     set_active_glyph('A');
 }
 
-GlyphMapWidget::~GlyphMapWidget()
-{
-}
-
 void GlyphMapWidget::resize_event(ResizeEvent& event)
 {
     recalculate_content_size();
diff --git a/Userland/Libraries/LibGUI/GlyphMapWidget.h b/Userland/Libraries/LibGUI/GlyphMapWidget.h
index f2295d95fe..7fc07e1f50 100644
--- a/Userland/Libraries/LibGUI/GlyphMapWidget.h
+++ b/Userland/Libraries/LibGUI/GlyphMapWidget.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -17,7 +18,7 @@ namespace GUI {
 class GlyphMapWidget final : public AbstractScrollableWidget {
     C_OBJECT(GlyphMapWidget)
 public:
-    virtual ~GlyphMapWidget() override;
+    virtual ~GlyphMapWidget() override = default;
 
     class Selection {
     public:
diff --git a/Userland/Libraries/LibGUI/GroupBox.cpp b/Userland/Libraries/LibGUI/GroupBox.cpp
index f0f4a853ff..2b410e1c69 100644
--- a/Userland/Libraries/LibGUI/GroupBox.cpp
+++ b/Userland/Libraries/LibGUI/GroupBox.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -20,10 +21,6 @@ GroupBox::GroupBox(StringView title)
     REGISTER_STRING_PROPERTY("title", title, set_title);
 }
 
-GroupBox::~GroupBox()
-{
-}
-
 Margins GroupBox::content_margins() const
 {
     return {
diff --git a/Userland/Libraries/LibGUI/GroupBox.h b/Userland/Libraries/LibGUI/GroupBox.h
index a928bd8789..0513a7ed11 100644
--- a/Userland/Libraries/LibGUI/GroupBox.h
+++ b/Userland/Libraries/LibGUI/GroupBox.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -13,7 +14,7 @@ namespace GUI {
 class GroupBox : public Widget {
     C_OBJECT(GroupBox)
 public:
-    virtual ~GroupBox() override;
+    virtual ~GroupBox() override = default;
 
     String title() const { return m_title; }
     void set_title(StringView);
diff --git a/Userland/Libraries/LibGUI/HeaderView.cpp b/Userland/Libraries/LibGUI/HeaderView.cpp
index 14f40f84a0..0eacc7e284 100644
--- a/Userland/Libraries/LibGUI/HeaderView.cpp
+++ b/Userland/Libraries/LibGUI/HeaderView.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -30,10 +31,6 @@ HeaderView::HeaderView(AbstractTableView& table_view, Gfx::Orientation orientati
     }
 }
 
-HeaderView::~HeaderView()
-{
-}
-
 void HeaderView::set_section_size(int section, int size)
 {
     auto& data = section_data(section);
diff --git a/Userland/Libraries/LibGUI/HeaderView.h b/Userland/Libraries/LibGUI/HeaderView.h
index 2010d5d1f4..89c98ede6d 100644
--- a/Userland/Libraries/LibGUI/HeaderView.h
+++ b/Userland/Libraries/LibGUI/HeaderView.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,7 +16,7 @@ class HeaderView final : public Widget {
     C_OBJECT(HeaderView);
 
 public:
-    virtual ~HeaderView() override;
+    virtual ~HeaderView() override = default;
 
     Gfx::Orientation orientation() const { return m_orientation; }
 
diff --git a/Userland/Libraries/LibGUI/INISyntaxHighlighter.cpp b/Userland/Libraries/LibGUI/INISyntaxHighlighter.cpp
index 71941d4557..0dd2c2d949 100644
--- a/Userland/Libraries/LibGUI/INISyntaxHighlighter.cpp
+++ b/Userland/Libraries/LibGUI/INISyntaxHighlighter.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -76,8 +77,4 @@ bool IniSyntaxHighlighter::token_types_equal(u64 token1, u64 token2) const
     return static_cast<GUI::IniToken::Type>(token1) == static_cast<GUI::IniToken::Type>(token2);
 }
 
-IniSyntaxHighlighter::~IniSyntaxHighlighter()
-{
-}
-
 }
diff --git a/Userland/Libraries/LibGUI/INISyntaxHighlighter.h b/Userland/Libraries/LibGUI/INISyntaxHighlighter.h
index 5e23da25e8..bb56a79071 100644
--- a/Userland/Libraries/LibGUI/INISyntaxHighlighter.h
+++ b/Userland/Libraries/LibGUI/INISyntaxHighlighter.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -12,8 +13,8 @@ namespace GUI {
 
 class IniSyntaxHighlighter final : public Syntax::Highlighter {
 public:
-    IniSyntaxHighlighter() { }
-    virtual ~IniSyntaxHighlighter() override;
+    IniSyntaxHighlighter() = default;
+    virtual ~IniSyntaxHighlighter() override = default;
 
     virtual bool is_identifier(u64) const override;
 
diff --git a/Userland/Libraries/LibGUI/Icon.h b/Userland/Libraries/LibGUI/Icon.h
index 4be214b91d..a8592082d5 100644
--- a/Userland/Libraries/LibGUI/Icon.h
+++ b/Userland/Libraries/LibGUI/Icon.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Julius Heijmen <julius.heijmen@gmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -17,7 +18,7 @@ namespace GUI {
 class IconImpl : public RefCounted<IconImpl> {
 public:
     static NonnullRefPtr<IconImpl> create() { return adopt_ref(*new IconImpl); }
-    ~IconImpl() { }
+    ~IconImpl() = default;
 
     const Gfx::Bitmap* bitmap_for_size(int) const;
     void set_bitmap_for_size(int, RefPtr<Gfx::Bitmap>&&);
@@ -31,7 +32,7 @@ public:
     }
 
 private:
-    IconImpl() { }
+    IconImpl() = default;
     HashMap<int, RefPtr<Gfx::Bitmap>> m_bitmaps;
 };
 
@@ -42,7 +43,7 @@ public:
     explicit Icon(RefPtr<Gfx::Bitmap>&&, RefPtr<Gfx::Bitmap>&&);
     explicit Icon(const IconImpl&);
     Icon(const Icon&);
-    ~Icon() { }
+    ~Icon() = default;
 
     static Icon default_icon(StringView);
     static ErrorOr<Icon> try_create_default_icon(StringView);
diff --git a/Userland/Libraries/LibGUI/IconView.cpp b/Userland/Libraries/LibGUI/IconView.cpp
index 2e99e6bbd6..1d6717d210 100644
--- a/Userland/Libraries/LibGUI/IconView.cpp
+++ b/Userland/Libraries/LibGUI/IconView.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -26,10 +27,6 @@ IconView::IconView()
     horizontal_scrollbar().set_visible(false);
 }
 
-IconView::~IconView()
-{
-}
-
 void IconView::select_all()
 {
     for (int item_index = 0; item_index < item_count(); ++item_index) {
diff --git a/Userland/Libraries/LibGUI/IconView.h b/Userland/Libraries/LibGUI/IconView.h
index 1b97b91dc6..787d21cb1a 100644
--- a/Userland/Libraries/LibGUI/IconView.h
+++ b/Userland/Libraries/LibGUI/IconView.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -16,7 +17,7 @@ namespace GUI {
 class IconView : public AbstractView {
     C_OBJECT(IconView)
 public:
-    virtual ~IconView() override;
+    virtual ~IconView() override = default;
 
     enum class FlowDirection {
         LeftToRight,
diff --git a/Userland/Libraries/LibGUI/ImageWidget.cpp b/Userland/Libraries/LibGUI/ImageWidget.cpp
index b28ee605a2..c59620db91 100644
--- a/Userland/Libraries/LibGUI/ImageWidget.cpp
+++ b/Userland/Libraries/LibGUI/ImageWidget.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -27,10 +28,6 @@ ImageWidget::ImageWidget(StringView)
     REGISTER_BOOL_PROPERTY("should_stretch", should_stretch, set_should_stretch);
 }
 
-ImageWidget::~ImageWidget()
-{
-}
-
 void ImageWidget::set_bitmap(const Gfx::Bitmap* bitmap)
 {
     if (m_bitmap == bitmap)
diff --git a/Userland/Libraries/LibGUI/ImageWidget.h b/Userland/Libraries/LibGUI/ImageWidget.h
index 6cee2aab41..e0fb19838d 100644
--- a/Userland/Libraries/LibGUI/ImageWidget.h
+++ b/Userland/Libraries/LibGUI/ImageWidget.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -8,13 +9,14 @@
 
 #include <LibCore/Timer.h>
 #include <LibGUI/Frame.h>
+#include <LibGfx/ImageDecoder.h>
 
 namespace GUI {
 
 class ImageWidget : public Frame {
     C_OBJECT(ImageWidget)
 public:
-    virtual ~ImageWidget() override;
+    virtual ~ImageWidget() override = default;
 
     void set_bitmap(const Gfx::Bitmap*);
     Gfx::Bitmap* bitmap() { return m_bitmap.ptr(); }
diff --git a/Userland/Libraries/LibGUI/InputBox.cpp b/Userland/Libraries/LibGUI/InputBox.cpp
index ebec5d88be..1be35696fb 100644
--- a/Userland/Libraries/LibGUI/InputBox.cpp
+++ b/Userland/Libraries/LibGUI/InputBox.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Jakob-Niklas See <git@nwex.de>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -24,10 +25,6 @@ InputBox::InputBox(Window* parent_window, String& text_value, StringView prompt,
     build(input_type);
 }
 
-InputBox::~InputBox()
-{
-}
-
 int InputBox::show(Window* parent_window, String& text_value, StringView prompt, StringView title, StringView placeholder, InputType input_type)
 {
     auto box = InputBox::construct(parent_window, text_value, prompt, title, placeholder, input_type);
diff --git a/Userland/Libraries/LibGUI/InputBox.h b/Userland/Libraries/LibGUI/InputBox.h
index 60705ad21c..16593ed91c 100644
--- a/Userland/Libraries/LibGUI/InputBox.h
+++ b/Userland/Libraries/LibGUI/InputBox.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Jakob-Niklas See <git@nwex.de>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -19,7 +20,7 @@ enum class InputType {
 class InputBox : public Dialog {
     C_OBJECT(InputBox)
 public:
-    virtual ~InputBox() override;
+    virtual ~InputBox() override = default;
 
     static int show(Window* parent_window, String& text_value, StringView prompt, StringView title, StringView placeholder = {}, InputType input_type = InputType::Text);
 
diff --git a/Userland/Libraries/LibGUI/ItemListModel.h b/Userland/Libraries/LibGUI/ItemListModel.h
index 5703e69179..68a9e26a0f 100644
--- a/Userland/Libraries/LibGUI/ItemListModel.h
+++ b/Userland/Libraries/LibGUI/ItemListModel.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2019-2020, Jesse Buhgaiar <jooster669@gmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -34,7 +35,7 @@ public:
         return adopt_ref(*new ItemListModel<T, Container>(data, row_count));
     }
 
-    virtual ~ItemListModel() override { }
+    virtual ~ItemListModel() override = default;
 
     virtual int row_count(ModelIndex const& index) const override
     {
diff --git a/Userland/Libraries/LibGUI/JsonArrayModel.h b/Userland/Libraries/LibGUI/JsonArrayModel.h
index faec864f26..fcdb4ecfd3 100644
--- a/Userland/Libraries/LibGUI/JsonArrayModel.h
+++ b/Userland/Libraries/LibGUI/JsonArrayModel.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -44,7 +45,7 @@ public:
         return adopt_ref(*new JsonArrayModel(json_path, move(fields)));
     }
 
-    virtual ~JsonArrayModel() override { }
+    virtual ~JsonArrayModel() override = default;
 
     virtual int row_count(const ModelIndex& = ModelIndex()) const override { return m_array.size(); }
     virtual int column_count(const ModelIndex& = ModelIndex()) const override { return m_fields.size(); }
diff --git a/Userland/Libraries/LibGUI/Label.cpp b/Userland/Libraries/LibGUI/Label.cpp
index e7a0ee254d..8745611ed2 100644
--- a/Userland/Libraries/LibGUI/Label.cpp
+++ b/Userland/Libraries/LibGUI/Label.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -33,10 +34,6 @@ Label::Label(String text)
     REGISTER_STRING_PROPERTY("icon", icon, set_icon_from_path);
 }
 
-Label::~Label()
-{
-}
-
 void Label::set_autosize(bool autosize)
 {
     if (m_autosize == autosize)
diff --git a/Userland/Libraries/LibGUI/Label.h b/Userland/Libraries/LibGUI/Label.h
index 4d889996a3..97e4493ddc 100644
--- a/Userland/Libraries/LibGUI/Label.h
+++ b/Userland/Libraries/LibGUI/Label.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -16,7 +17,7 @@ class Label : public Frame {
     C_OBJECT(Label);
 
 public:
-    virtual ~Label() override;
+    virtual ~Label() override = default;
 
     String text() const { return m_text; }
     void set_text(String);
diff --git a/Userland/Libraries/LibGUI/Layout.cpp b/Userland/Libraries/LibGUI/Layout.cpp
index 76818bbb63..3c54efda78 100644
--- a/Userland/Libraries/LibGUI/Layout.cpp
+++ b/Userland/Libraries/LibGUI/Layout.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -37,9 +38,7 @@ Layout::Layout()
         });
 }
 
-Layout::~Layout()
-{
-}
+Layout::~Layout() = default;
 
 void Layout::notify_adopted(Badge<Widget>, Widget& widget)
 {
diff --git a/Userland/Libraries/LibGUI/LazyWidget.cpp b/Userland/Libraries/LibGUI/LazyWidget.cpp
index 82dd594688..6756cc4695 100644
--- a/Userland/Libraries/LibGUI/LazyWidget.cpp
+++ b/Userland/Libraries/LibGUI/LazyWidget.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -8,14 +9,6 @@
 
 namespace GUI {
 
-LazyWidget::LazyWidget()
-{
-}
-
-LazyWidget::~LazyWidget()
-{
-}
-
 void LazyWidget::show_event(ShowEvent&)
 {
     if (m_has_been_shown)
diff --git a/Userland/Libraries/LibGUI/LazyWidget.h b/Userland/Libraries/LibGUI/LazyWidget.h
index 7011b14b67..9e8f985b12 100644
--- a/Userland/Libraries/LibGUI/LazyWidget.h
+++ b/Userland/Libraries/LibGUI/LazyWidget.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -13,12 +14,12 @@ namespace GUI {
 class LazyWidget : public Widget {
     C_OBJECT(LazyWidget)
 public:
-    virtual ~LazyWidget() override;
+    virtual ~LazyWidget() override = default;
 
     Function<void(LazyWidget&)> on_first_show;
 
 protected:
-    LazyWidget();
+    LazyWidget() = default;
 
 private:
     virtual void show_event(ShowEvent&) override;
diff --git a/Userland/Libraries/LibGUI/ListView.cpp b/Userland/Libraries/LibGUI/ListView.cpp
index 6fbdd8bc34..fecd4b8d80 100644
--- a/Userland/Libraries/LibGUI/ListView.cpp
+++ b/Userland/Libraries/LibGUI/ListView.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -22,9 +23,7 @@ ListView::ListView()
     set_searchable(true);
 }
 
-ListView::~ListView()
-{
-}
+ListView::~ListView() = default;
 
 void ListView::select_all()
 {
diff --git a/Userland/Libraries/LibGUI/Menubar.cpp b/Userland/Libraries/LibGUI/Menubar.cpp
index 69fdb27f13..587dd229c8 100644
--- a/Userland/Libraries/LibGUI/Menubar.cpp
+++ b/Userland/Libraries/LibGUI/Menubar.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -9,14 +10,6 @@
 
 namespace GUI {
 
-Menubar::Menubar()
-{
-}
-
-Menubar::~Menubar()
-{
-}
-
 ErrorOr<NonnullRefPtr<Menu>> Menubar::try_add_menu(Badge<Window>, String name)
 {
     auto menu = TRY(try_add<Menu>(move(name)));
diff --git a/Userland/Libraries/LibGUI/Menubar.h b/Userland/Libraries/LibGUI/Menubar.h
index 71e1b35416..884c5b475a 100644
--- a/Userland/Libraries/LibGUI/Menubar.h
+++ b/Userland/Libraries/LibGUI/Menubar.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -20,7 +21,7 @@ class Menubar : public Core::Object {
     C_OBJECT(Menubar);
 
 public:
-    virtual ~Menubar() override;
+    virtual ~Menubar() override = default;
 
     ErrorOr<NonnullRefPtr<Menu>> try_add_menu(Badge<Window>, String name);
     Menu& add_menu(Badge<Window>, String name);
@@ -28,7 +29,7 @@ public:
     void for_each_menu(Function<IterationDecision(Menu&)>);
 
 private:
-    Menubar();
+    Menubar() = default;
 
     NonnullRefPtrVector<Menu> m_menus;
 };
diff --git a/Userland/Libraries/LibGUI/MessageBox.cpp b/Userland/Libraries/LibGUI/MessageBox.cpp
index b282430435..bc2c67fda2 100644
--- a/Userland/Libraries/LibGUI/MessageBox.cpp
+++ b/Userland/Libraries/LibGUI/MessageBox.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -71,10 +72,6 @@ MessageBox::MessageBox(Window* parent_window, StringView text, StringView title,
     build();
 }
 
-MessageBox::~MessageBox()
-{
-}
-
 RefPtr<Gfx::Bitmap> MessageBox::icon() const
 {
     switch (m_type) {
diff --git a/Userland/Libraries/LibGUI/MessageBox.h b/Userland/Libraries/LibGUI/MessageBox.h
index 98265ca8ed..12d8ae72e0 100644
--- a/Userland/Libraries/LibGUI/MessageBox.h
+++ b/Userland/Libraries/LibGUI/MessageBox.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -29,7 +30,7 @@ public:
         YesNoCancel,
     };
 
-    virtual ~MessageBox() override;
+    virtual ~MessageBox() override = default;
 
     static int show(Window* parent_window, StringView text, StringView title, Type type = Type::None, InputType input_type = InputType::OK);
     static int show_error(Window* parent_window, StringView text);
diff --git a/Userland/Libraries/LibGUI/Model.cpp b/Userland/Libraries/LibGUI/Model.cpp
index 8989751144..7ffa5c1fc4 100644
--- a/Userland/Libraries/LibGUI/Model.cpp
+++ b/Userland/Libraries/LibGUI/Model.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -11,13 +12,9 @@
 
 namespace GUI {
 
-Model::Model()
-{
-}
+Model::Model() = default;
 
-Model::~Model()
-{
-}
+Model::~Model() = default;
 
 void Model::register_view(Badge<AbstractView>, AbstractView& view)
 {
diff --git a/Userland/Libraries/LibGUI/Model.h b/Userland/Libraries/LibGUI/Model.h
index 498cea4dbe..a710ff2c15 100644
--- a/Userland/Libraries/LibGUI/Model.h
+++ b/Userland/Libraries/LibGUI/Model.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -33,7 +34,7 @@ enum class SortOrder {
 
 class ModelClient {
 public:
-    virtual ~ModelClient() { }
+    virtual ~ModelClient() = default;
 
     virtual void model_did_update(unsigned flags) = 0;
 
diff --git a/Userland/Libraries/LibGUI/ModelEditingDelegate.h b/Userland/Libraries/LibGUI/ModelEditingDelegate.h
index faf11d276a..e02a61efaa 100644
--- a/Userland/Libraries/LibGUI/ModelEditingDelegate.h
+++ b/Userland/Libraries/LibGUI/ModelEditingDelegate.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -19,7 +20,7 @@ public:
         SelectAll,
     };
 
-    virtual ~ModelEditingDelegate() { }
+    virtual ~ModelEditingDelegate() = default;
 
     void bind(Model& model, const ModelIndex& index)
     {
@@ -43,7 +44,7 @@ public:
     virtual void will_begin_editing() { }
 
 protected:
-    ModelEditingDelegate() { }
+    ModelEditingDelegate() = default;
 
     virtual RefPtr<Widget> create_widget() = 0;
     void commit()
@@ -72,8 +73,8 @@ private:
 
 class StringModelEditingDelegate : public ModelEditingDelegate {
 public:
-    StringModelEditingDelegate() { }
-    virtual ~StringModelEditingDelegate() override { }
+    StringModelEditingDelegate() = default;
+    virtual ~StringModelEditingDelegate() override = default;
 
     virtual RefPtr<Widget> create_widget() override
     {
diff --git a/Userland/Libraries/LibGUI/MultiView.cpp b/Userland/Libraries/LibGUI/MultiView.cpp
index 86b1f32ef8..fff6f0e135 100644
--- a/Userland/Libraries/LibGUI/MultiView.cpp
+++ b/Userland/Libraries/LibGUI/MultiView.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -49,10 +50,6 @@ MultiView::MultiView()
     set_view_mode(ViewMode::Icon);
 }
 
-MultiView::~MultiView()
-{
-}
-
 void MultiView::set_view_mode(ViewMode mode)
 {
     if (m_view_mode == mode)
diff --git a/Userland/Libraries/LibGUI/MultiView.h b/Userland/Libraries/LibGUI/MultiView.h
index 3a0ba38a4f..a4436fe08d 100644
--- a/Userland/Libraries/LibGUI/MultiView.h
+++ b/Userland/Libraries/LibGUI/MultiView.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -17,7 +18,7 @@ namespace GUI {
 class MultiView final : public GUI::StackWidget {
     C_OBJECT(MultiView)
 public:
-    virtual ~MultiView() override;
+    virtual ~MultiView() override = default;
 
     void refresh();
 
diff --git a/Userland/Libraries/LibGUI/Notification.cpp b/Userland/Libraries/LibGUI/Notification.cpp
index 3d15afbc3d..04e4a5aed0 100644
--- a/Userland/Libraries/LibGUI/Notification.cpp
+++ b/Userland/Libraries/LibGUI/Notification.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -33,13 +34,8 @@ private:
     Notification* m_notification;
 };
 
-Notification::Notification()
-{
-}
-
-Notification::~Notification()
-{
-}
+Notification::Notification() = default;
+Notification::~Notification() = default;
 
 void Notification::show()
 {
diff --git a/Userland/Libraries/LibGUI/OpacitySlider.cpp b/Userland/Libraries/LibGUI/OpacitySlider.cpp
index be578c0f0e..59cb22d2fa 100644
--- a/Userland/Libraries/LibGUI/OpacitySlider.cpp
+++ b/Userland/Libraries/LibGUI/OpacitySlider.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -25,10 +26,6 @@ OpacitySlider::OpacitySlider(Gfx::Orientation orientation)
     set_fixed_height(20);
 }
 
-OpacitySlider::~OpacitySlider()
-{
-}
-
 Gfx::IntRect OpacitySlider::frame_inner_rect() const
 {
     return rect().shrunken(4, 4);
diff --git a/Userland/Libraries/LibGUI/OpacitySlider.h b/Userland/Libraries/LibGUI/OpacitySlider.h
index 7bc5e9beee..e4ab0560be 100644
--- a/Userland/Libraries/LibGUI/OpacitySlider.h
+++ b/Userland/Libraries/LibGUI/OpacitySlider.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ class OpacitySlider : public AbstractSlider {
     C_OBJECT(OpacitySlider);
 
 public:
-    virtual ~OpacitySlider() override;
+    virtual ~OpacitySlider() override = default;
 
 protected:
     virtual void paint_event(PaintEvent&) override;
diff --git a/Userland/Libraries/LibGUI/PasswordInputDialog.cpp b/Userland/Libraries/LibGUI/PasswordInputDialog.cpp
index 92b8b4249f..37731d27bc 100644
--- a/Userland/Libraries/LibGUI/PasswordInputDialog.cpp
+++ b/Userland/Libraries/LibGUI/PasswordInputDialog.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -59,10 +60,6 @@ PasswordInputDialog::PasswordInputDialog(Window* parent_window, String title, St
     password_box.set_focus(true);
 }
 
-PasswordInputDialog::~PasswordInputDialog()
-{
-}
-
 int PasswordInputDialog::show(Window* parent_window, String& text_value, String title, String server, String username)
 {
     auto box = PasswordInputDialog::construct(parent_window, move(title), move(server), move(username));
diff --git a/Userland/Libraries/LibGUI/PasswordInputDialog.h b/Userland/Libraries/LibGUI/PasswordInputDialog.h
index db0d05d936..ee3200d792 100644
--- a/Userland/Libraries/LibGUI/PasswordInputDialog.h
+++ b/Userland/Libraries/LibGUI/PasswordInputDialog.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ class PasswordInputDialog : public Dialog {
     C_OBJECT(PasswordInputDialog);
 
 public:
-    virtual ~PasswordInputDialog() override;
+    virtual ~PasswordInputDialog() override = default;
 
     static int show(Window* parent_window, String& text_value, String title, String server, String username);
 
diff --git a/Userland/Libraries/LibGUI/PersistentModelIndex.h b/Userland/Libraries/LibGUI/PersistentModelIndex.h
index 4efa882642..c3a56e77ba 100644
--- a/Userland/Libraries/LibGUI/PersistentModelIndex.h
+++ b/Userland/Libraries/LibGUI/PersistentModelIndex.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -30,7 +31,7 @@ class PersistentHandle : public Weakable<PersistentHandle> {
 
 class PersistentModelIndex {
 public:
-    PersistentModelIndex() { }
+    PersistentModelIndex() = default;
     PersistentModelIndex(ModelIndex const&);
     PersistentModelIndex(PersistentModelIndex const&) = default;
     PersistentModelIndex(PersistentModelIndex&&) = default;
diff --git a/Userland/Libraries/LibGUI/ProcessChooser.cpp b/Userland/Libraries/LibGUI/ProcessChooser.cpp
index 35ef3a4e2a..94c3e4781d 100644
--- a/Userland/Libraries/LibGUI/ProcessChooser.cpp
+++ b/Userland/Libraries/LibGUI/ProcessChooser.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -104,8 +105,4 @@ void ProcessChooser::set_pid_from_index_and_close(const ModelIndex& index)
     done(ExecOK);
 }
 
-ProcessChooser::~ProcessChooser()
-{
-}
-
 }
diff --git a/Userland/Libraries/LibGUI/ProcessChooser.h b/Userland/Libraries/LibGUI/ProcessChooser.h
index 983abb3f65..23e3363a0e 100644
--- a/Userland/Libraries/LibGUI/ProcessChooser.h
+++ b/Userland/Libraries/LibGUI/ProcessChooser.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -16,7 +17,7 @@ class ProcessChooser final : public GUI::Dialog {
     C_OBJECT(ProcessChooser);
 
 public:
-    virtual ~ProcessChooser() override;
+    virtual ~ProcessChooser() override = default;
 
     pid_t pid() const { return m_pid; }
 
diff --git a/Userland/Libraries/LibGUI/Progressbar.cpp b/Userland/Libraries/LibGUI/Progressbar.cpp
index dcdd409142..f449487a4e 100644
--- a/Userland/Libraries/LibGUI/Progressbar.cpp
+++ b/Userland/Libraries/LibGUI/Progressbar.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -28,10 +29,6 @@ Progressbar::Progressbar(Orientation orientation)
     REGISTER_INT_PROPERTY("max", max, set_max);
 }
 
-Progressbar::~Progressbar()
-{
-}
-
 void Progressbar::set_value(int value)
 {
     if (m_value == value)
diff --git a/Userland/Libraries/LibGUI/Progressbar.h b/Userland/Libraries/LibGUI/Progressbar.h
index 59da0b9ff1..c3ff489f0f 100644
--- a/Userland/Libraries/LibGUI/Progressbar.h
+++ b/Userland/Libraries/LibGUI/Progressbar.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -13,7 +14,7 @@ namespace GUI {
 class Progressbar : public Frame {
     C_OBJECT(Progressbar)
 public:
-    virtual ~Progressbar() override;
+    virtual ~Progressbar() override = default;
 
     void set_range(int min, int max);
     void set_min(int min) { set_range(min, max()); }
@@ -56,7 +57,7 @@ class VerticalProgressbar final : public Progressbar {
     C_OBJECT(VerticalProgressbar);
 
 public:
-    virtual ~VerticalProgressbar() override { }
+    virtual ~VerticalProgressbar() override = default;
 
 private:
     VerticalProgressbar()
@@ -69,7 +70,7 @@ class HorizontalProgressbar final : public Progressbar {
     C_OBJECT(HorizontalProgressbar);
 
 public:
-    virtual ~HorizontalProgressbar() override { }
+    virtual ~HorizontalProgressbar() override = default;
 
 private:
     HorizontalProgressbar()
diff --git a/Userland/Libraries/LibGUI/RadioButton.cpp b/Userland/Libraries/LibGUI/RadioButton.cpp
index 8784f9c333..5c051e86d8 100644
--- a/Userland/Libraries/LibGUI/RadioButton.cpp
+++ b/Userland/Libraries/LibGUI/RadioButton.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -24,10 +25,6 @@ RadioButton::RadioButton(String text)
     set_fixed_height(22);
 }
 
-RadioButton::~RadioButton()
-{
-}
-
 Gfx::IntSize RadioButton::circle_size()
 {
     return { 12, 12 };
diff --git a/Userland/Libraries/LibGUI/RadioButton.h b/Userland/Libraries/LibGUI/RadioButton.h
index 0294056c9b..e2ef712bfd 100644
--- a/Userland/Libraries/LibGUI/RadioButton.h
+++ b/Userland/Libraries/LibGUI/RadioButton.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ class RadioButton : public AbstractButton {
     C_OBJECT(RadioButton);
 
 public:
-    virtual ~RadioButton() override;
+    virtual ~RadioButton() override = default;
 
     virtual void click(unsigned modifiers = 0) override;
 
diff --git a/Userland/Libraries/LibGUI/ResizeCorner.cpp b/Userland/Libraries/LibGUI/ResizeCorner.cpp
index 82917c86be..072b486cae 100644
--- a/Userland/Libraries/LibGUI/ResizeCorner.cpp
+++ b/Userland/Libraries/LibGUI/ResizeCorner.cpp
@@ -61,10 +61,6 @@ ResizeCorner::ResizeCorner()
     set_fixed_size(16, 18);
 }
 
-ResizeCorner::~ResizeCorner()
-{
-}
-
 void ResizeCorner::paint_event(PaintEvent& event)
 {
     Painter painter(*this);
diff --git a/Userland/Libraries/LibGUI/ResizeCorner.h b/Userland/Libraries/LibGUI/ResizeCorner.h
index 832774c243..633d362f3a 100644
--- a/Userland/Libraries/LibGUI/ResizeCorner.h
+++ b/Userland/Libraries/LibGUI/ResizeCorner.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -13,7 +14,7 @@ namespace GUI {
 class ResizeCorner : public Widget {
     C_OBJECT(ResizeCorner)
 public:
-    virtual ~ResizeCorner() override;
+    virtual ~ResizeCorner() override = default;
 
 protected:
     ResizeCorner();
diff --git a/Userland/Libraries/LibGUI/RunningProcessesModel.cpp b/Userland/Libraries/LibGUI/RunningProcessesModel.cpp
index d05391acaa..3869dd71c9 100644
--- a/Userland/Libraries/LibGUI/RunningProcessesModel.cpp
+++ b/Userland/Libraries/LibGUI/RunningProcessesModel.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,14 +16,6 @@ NonnullRefPtr<RunningProcessesModel> RunningProcessesModel::create()
     return adopt_ref(*new RunningProcessesModel);
 }
 
-RunningProcessesModel::RunningProcessesModel()
-{
-}
-
-RunningProcessesModel::~RunningProcessesModel()
-{
-}
-
 void RunningProcessesModel::update()
 {
     m_processes.clear();
diff --git a/Userland/Libraries/LibGUI/RunningProcessesModel.h b/Userland/Libraries/LibGUI/RunningProcessesModel.h
index f57017e818..f8a347ca62 100644
--- a/Userland/Libraries/LibGUI/RunningProcessesModel.h
+++ b/Userland/Libraries/LibGUI/RunningProcessesModel.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ namespace GUI {
 class RunningProcessesModel final : public GUI::Model {
 public:
     static NonnullRefPtr<RunningProcessesModel> create();
-    virtual ~RunningProcessesModel() override;
+    virtual ~RunningProcessesModel() override = default;
 
     enum Column {
         Icon,
@@ -32,7 +33,7 @@ public:
     void update();
 
 private:
-    RunningProcessesModel();
+    RunningProcessesModel() = default;
 
     struct Process {
         pid_t pid;
diff --git a/Userland/Libraries/LibGUI/ScrollableContainerWidget.cpp b/Userland/Libraries/LibGUI/ScrollableContainerWidget.cpp
index e8020143d5..214ffe0401 100644
--- a/Userland/Libraries/LibGUI/ScrollableContainerWidget.cpp
+++ b/Userland/Libraries/LibGUI/ScrollableContainerWidget.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -18,10 +19,6 @@ ScrollableContainerWidget::ScrollableContainerWidget()
     REGISTER_BOOL_PROPERTY("should_hide_unnecessary_scrollbars", should_hide_unnecessary_scrollbars, set_should_hide_unnecessary_scrollbars);
 }
 
-ScrollableContainerWidget::~ScrollableContainerWidget()
-{
-}
-
 void ScrollableContainerWidget::did_scroll()
 {
     AbstractScrollableWidget::did_scroll();
diff --git a/Userland/Libraries/LibGUI/ScrollableContainerWidget.h b/Userland/Libraries/LibGUI/ScrollableContainerWidget.h
index 5fc3f8b0a5..36c2cd734c 100644
--- a/Userland/Libraries/LibGUI/ScrollableContainerWidget.h
+++ b/Userland/Libraries/LibGUI/ScrollableContainerWidget.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ class ScrollableContainerWidget : public GUI::AbstractScrollableWidget {
     C_OBJECT(ScrollableContainerWidget);
 
 public:
-    virtual ~ScrollableContainerWidget();
+    virtual ~ScrollableContainerWidget() = default;
 
     void set_widget(GUI::Widget*);
     GUI::Widget* widget() { return m_widget; }
diff --git a/Userland/Libraries/LibGUI/Scrollbar.cpp b/Userland/Libraries/LibGUI/Scrollbar.cpp
index c6d67b1013..8de37ae6f8 100644
--- a/Userland/Libraries/LibGUI/Scrollbar.cpp
+++ b/Userland/Libraries/LibGUI/Scrollbar.cpp
@@ -88,10 +88,6 @@ Scrollbar::Scrollbar(Orientation orientation)
     };
 }
 
-Scrollbar::~Scrollbar()
-{
-}
-
 Gfx::IntRect Scrollbar::decrement_button_rect() const
 {
     return { 0, 0, button_width(), button_height() };
diff --git a/Userland/Libraries/LibGUI/Scrollbar.h b/Userland/Libraries/LibGUI/Scrollbar.h
index c713314f6b..8ebb65532b 100644
--- a/Userland/Libraries/LibGUI/Scrollbar.h
+++ b/Userland/Libraries/LibGUI/Scrollbar.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -7,6 +8,7 @@
 #pragma once
 
 #include <AK/Function.h>
+#include <LibCore/Timer.h>
 #include <LibGUI/AbstractSlider.h>
 
 namespace GUI {
@@ -15,7 +17,7 @@ class Scrollbar : public AbstractSlider {
     C_OBJECT(Scrollbar);
 
 public:
-    virtual ~Scrollbar() override;
+    virtual ~Scrollbar() override = default;
 
     bool is_scrollable() const { return max() != min(); }
 
diff --git a/Userland/Libraries/LibGUI/SeparatorWidget.cpp b/Userland/Libraries/LibGUI/SeparatorWidget.cpp
index 4e6a490ace..91bd6b137b 100644
--- a/Userland/Libraries/LibGUI/SeparatorWidget.cpp
+++ b/Userland/Libraries/LibGUI/SeparatorWidget.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -22,10 +23,6 @@ SeparatorWidget::SeparatorWidget(Gfx::Orientation orientation)
         set_fixed_height(8);
 }
 
-SeparatorWidget::~SeparatorWidget()
-{
-}
-
 void SeparatorWidget::paint_event(PaintEvent& event)
 {
     Painter painter(*this);
diff --git a/Userland/Libraries/LibGUI/SeparatorWidget.h b/Userland/Libraries/LibGUI/SeparatorWidget.h
index d5c58b6b65..40fc9f62c5 100644
--- a/Userland/Libraries/LibGUI/SeparatorWidget.h
+++ b/Userland/Libraries/LibGUI/SeparatorWidget.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ class SeparatorWidget : public Widget {
     C_OBJECT(SeparatorWidget);
 
 public:
-    virtual ~SeparatorWidget() override;
+    virtual ~SeparatorWidget() override = default;
 
 protected:
     explicit SeparatorWidget(Gfx::Orientation);
@@ -28,7 +29,7 @@ private:
 class VerticalSeparator final : public SeparatorWidget {
     C_OBJECT(VerticalSeparator)
 public:
-    virtual ~VerticalSeparator() override { }
+    virtual ~VerticalSeparator() override = default;
 
 private:
     VerticalSeparator()
@@ -40,7 +41,7 @@ private:
 class HorizontalSeparator final : public SeparatorWidget {
     C_OBJECT(HorizontalSeparator)
 public:
-    virtual ~HorizontalSeparator() override { }
+    virtual ~HorizontalSeparator() override = default;
 
 private:
     HorizontalSeparator()
diff --git a/Userland/Libraries/LibGUI/SettingsWindow.cpp b/Userland/Libraries/LibGUI/SettingsWindow.cpp
index d4c5d40a6a..84d24bab39 100644
--- a/Userland/Libraries/LibGUI/SettingsWindow.cpp
+++ b/Userland/Libraries/LibGUI/SettingsWindow.cpp
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2020, Idan Horowitz <idan.horowitz@serenityos.org>
- * Copyright (c) 2021, the SerenityOS developers.
+ * Copyright (c) 2021-2022, the SerenityOS developers.
  * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
  *
@@ -76,12 +76,4 @@ ErrorOr<NonnullRefPtr<SettingsWindow>> SettingsWindow::create(String title, Show
     return window;
 }
 
-SettingsWindow::SettingsWindow()
-{
-}
-
-SettingsWindow::~SettingsWindow()
-{
-}
-
 }
diff --git a/Userland/Libraries/LibGUI/SettingsWindow.h b/Userland/Libraries/LibGUI/SettingsWindow.h
index d7530b8df2..766ccdbdcd 100644
--- a/Userland/Libraries/LibGUI/SettingsWindow.h
+++ b/Userland/Libraries/LibGUI/SettingsWindow.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2020, Idan Horowitz <idan.horowitz@serenityos.org>
- * Copyright (c) 2021, the SerenityOS developers.
+ * Copyright (c) 2021-2022, the SerenityOS developers.
  * Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
@@ -31,7 +31,7 @@ public:
 
     static ErrorOr<NonnullRefPtr<SettingsWindow>> create(String title, ShowDefaultsButton = ShowDefaultsButton::No);
 
-    virtual ~SettingsWindow() override;
+    virtual ~SettingsWindow() override = default;
 
     template<class T, class... Args>
     ErrorOr<NonnullRefPtr<T>> add_tab(String title, Args&&... args)
@@ -42,7 +42,7 @@ public:
     }
 
 private:
-    SettingsWindow();
+    SettingsWindow() = default;
 
     RefPtr<GUI::TabWidget> m_tab_widget;
     NonnullRefPtrVector<Tab> m_tabs;
diff --git a/Userland/Libraries/LibGUI/Slider.cpp b/Userland/Libraries/LibGUI/Slider.cpp
index 333a194144..b090f63c90 100644
--- a/Userland/Libraries/LibGUI/Slider.cpp
+++ b/Userland/Libraries/LibGUI/Slider.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -24,10 +25,6 @@ Slider::Slider(Orientation orientation)
         { KnobSizeMode::Proportional, "Proportional" });
 }
 
-Slider::~Slider()
-{
-}
-
 void Slider::paint_event(PaintEvent& event)
 {
     Painter painter(*this);
diff --git a/Userland/Libraries/LibGUI/Slider.h b/Userland/Libraries/LibGUI/Slider.h
index 0eddc3c81e..39cab99b29 100644
--- a/Userland/Libraries/LibGUI/Slider.h
+++ b/Userland/Libraries/LibGUI/Slider.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -19,7 +20,7 @@ public:
         Proportional,
     };
 
-    virtual ~Slider() override;
+    virtual ~Slider() override = default;
 
     void set_knob_size_mode(KnobSizeMode mode) { m_knob_size_mode = mode; }
     KnobSizeMode knob_size_mode() const { return m_knob_size_mode; }
@@ -64,7 +65,7 @@ class VerticalSlider final : public Slider {
     C_OBJECT(VerticalSlider);
 
 public:
-    virtual ~VerticalSlider() override { }
+    virtual ~VerticalSlider() override = default;
 
 private:
     VerticalSlider()
@@ -77,7 +78,7 @@ class HorizontalSlider final : public Slider {
     C_OBJECT(HorizontalSlider);
 
 public:
-    virtual ~HorizontalSlider() override { }
+    virtual ~HorizontalSlider() override = default;
 
 private:
     HorizontalSlider()
diff --git a/Userland/Libraries/LibGUI/SpinBox.cpp b/Userland/Libraries/LibGUI/SpinBox.cpp
index e46278376b..59676e8587 100644
--- a/Userland/Libraries/LibGUI/SpinBox.cpp
+++ b/Userland/Libraries/LibGUI/SpinBox.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -52,10 +53,6 @@ SpinBox::SpinBox()
     REGISTER_INT_PROPERTY("max", max, set_max);
 }
 
-SpinBox::~SpinBox()
-{
-}
-
 void SpinBox::set_value(int value, AllowCallback allow_callback)
 {
     value = clamp(value, m_min, m_max);
diff --git a/Userland/Libraries/LibGUI/SpinBox.h b/Userland/Libraries/LibGUI/SpinBox.h
index b71b900dde..cdd0849ec4 100644
--- a/Userland/Libraries/LibGUI/SpinBox.h
+++ b/Userland/Libraries/LibGUI/SpinBox.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -13,7 +14,7 @@ namespace GUI {
 class SpinBox : public Widget {
     C_OBJECT(SpinBox)
 public:
-    virtual ~SpinBox() override;
+    virtual ~SpinBox() override = default;
 
     int value() const { return m_value; }
     void set_value(int, AllowCallback = AllowCallback::Yes);
diff --git a/Userland/Libraries/LibGUI/Splitter.cpp b/Userland/Libraries/LibGUI/Splitter.cpp
index 0571b47d4c..83ffdd4064 100644
--- a/Userland/Libraries/LibGUI/Splitter.cpp
+++ b/Userland/Libraries/LibGUI/Splitter.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -33,10 +34,6 @@ Splitter::Splitter(Orientation orientation)
         layout()->set_spacing(4);
 }
 
-Splitter::~Splitter()
-{
-}
-
 void Splitter::paint_event(PaintEvent& event)
 {
     Painter painter(*this);
diff --git a/Userland/Libraries/LibGUI/Splitter.h b/Userland/Libraries/LibGUI/Splitter.h
index ad21a0747f..c48e82e2c0 100644
--- a/Userland/Libraries/LibGUI/Splitter.h
+++ b/Userland/Libraries/LibGUI/Splitter.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -19,7 +20,7 @@ public:
         Second
     };
 
-    virtual ~Splitter() override;
+    virtual ~Splitter() override = default;
 
     int first_resizee_minimum_size() { return m_first_resizee_minimum_size; }
     void set_first_resizee_minimum_size(int minimum_size) { m_first_resizee_minimum_size = minimum_size; }
@@ -84,7 +85,7 @@ private:
 class VerticalSplitter final : public Splitter {
     C_OBJECT(VerticalSplitter)
 public:
-    virtual ~VerticalSplitter() override { }
+    virtual ~VerticalSplitter() override = default;
 
 private:
     VerticalSplitter()
@@ -96,7 +97,7 @@ private:
 class HorizontalSplitter final : public Splitter {
     C_OBJECT(HorizontalSplitter)
 public:
-    virtual ~HorizontalSplitter() override { }
+    virtual ~HorizontalSplitter() override = default;
 
 private:
     HorizontalSplitter()
diff --git a/Userland/Libraries/LibGUI/StackWidget.cpp b/Userland/Libraries/LibGUI/StackWidget.cpp
index 1a618a51c6..a5b6aca595 100644
--- a/Userland/Libraries/LibGUI/StackWidget.cpp
+++ b/Userland/Libraries/LibGUI/StackWidget.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -12,14 +13,6 @@ REGISTER_WIDGET(GUI, StackWidget);
 
 namespace GUI {
 
-StackWidget::StackWidget()
-{
-}
-
-StackWidget::~StackWidget()
-{
-}
-
 void StackWidget::set_active_widget(Widget* widget)
 {
     if (widget == m_active_widget)
diff --git a/Userland/Libraries/LibGUI/StackWidget.h b/Userland/Libraries/LibGUI/StackWidget.h
index b2d9568023..0f9dc7170b 100644
--- a/Userland/Libraries/LibGUI/StackWidget.h
+++ b/Userland/Libraries/LibGUI/StackWidget.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -13,7 +14,7 @@ namespace GUI {
 class StackWidget : public Widget {
     C_OBJECT(StackWidget)
 public:
-    virtual ~StackWidget() override;
+    virtual ~StackWidget() override = default;
 
     Widget* active_widget() { return m_active_widget.ptr(); }
     const Widget* active_widget() const { return m_active_widget.ptr(); }
@@ -22,7 +23,7 @@ public:
     Function<void(Widget*)> on_active_widget_change;
 
 protected:
-    StackWidget();
+    StackWidget() = default;
     virtual void child_event(Core::ChildEvent&) override;
     virtual void resize_event(ResizeEvent&) override;
 
diff --git a/Userland/Libraries/LibGUI/Statusbar.cpp b/Userland/Libraries/LibGUI/Statusbar.cpp
index abce4af03c..f19d9f5c03 100644
--- a/Userland/Libraries/LibGUI/Statusbar.cpp
+++ b/Userland/Libraries/LibGUI/Statusbar.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -30,10 +31,6 @@ Statusbar::Statusbar(int count)
     REGISTER_INT_PROPERTY("segment_count", segment_count, set_segment_count);
 }
 
-Statusbar::~Statusbar()
-{
-}
-
 NonnullRefPtr<Statusbar::Segment> Statusbar::create_segment()
 {
     auto widget = Segment::construct();
diff --git a/Userland/Libraries/LibGUI/Statusbar.h b/Userland/Libraries/LibGUI/Statusbar.h
index 818eb04037..197e8f7ceb 100644
--- a/Userland/Libraries/LibGUI/Statusbar.h
+++ b/Userland/Libraries/LibGUI/Statusbar.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -16,7 +17,7 @@ namespace GUI {
 class Statusbar : public Widget {
     C_OBJECT(Statusbar)
 public:
-    virtual ~Statusbar() override;
+    virtual ~Statusbar() override = default;
 
     String text(size_t index = 0) const;
     void set_text(String);
diff --git a/Userland/Libraries/LibGUI/TabWidget.cpp b/Userland/Libraries/LibGUI/TabWidget.cpp
index 76d6d577b0..f9f6e23aa9 100644
--- a/Userland/Libraries/LibGUI/TabWidget.cpp
+++ b/Userland/Libraries/LibGUI/TabWidget.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Peter Elliott <pelliott@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -40,10 +41,6 @@ TabWidget::TabWidget()
         });
 }
 
-TabWidget::~TabWidget()
-{
-}
-
 ErrorOr<void> TabWidget::try_add_widget(String title, Widget& widget)
 {
     m_tabs.append({ move(title), nullptr, &widget });
diff --git a/Userland/Libraries/LibGUI/TabWidget.h b/Userland/Libraries/LibGUI/TabWidget.h
index d3d4977f6c..c3a793374d 100644
--- a/Userland/Libraries/LibGUI/TabWidget.h
+++ b/Userland/Libraries/LibGUI/TabWidget.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -19,7 +20,7 @@ public:
         Bottom,
     };
 
-    virtual ~TabWidget() override;
+    virtual ~TabWidget() override = default;
 
     TabPosition tab_position() const { return m_tab_position; }
     void set_tab_position(TabPosition);
diff --git a/Userland/Libraries/LibGUI/TableView.cpp b/Userland/Libraries/LibGUI/TableView.cpp
index a7c6568988..0820bb4172 100644
--- a/Userland/Libraries/LibGUI/TableView.cpp
+++ b/Userland/Libraries/LibGUI/TableView.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2022, Glenford Williams <gw_dev@outlook.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -27,10 +28,6 @@ TableView::TableView()
     set_foreground_role(ColorRole::BaseText);
 }
 
-TableView::~TableView()
-{
-}
-
 void TableView::paint_event(PaintEvent& event)
 {
     Color widget_background_color = palette().color(background_role());
diff --git a/Userland/Libraries/LibGUI/TableView.h b/Userland/Libraries/LibGUI/TableView.h
index f6736b34e2..94f7f13ae3 100644
--- a/Userland/Libraries/LibGUI/TableView.h
+++ b/Userland/Libraries/LibGUI/TableView.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -13,7 +14,7 @@ namespace GUI {
 class TableView : public AbstractTableView {
     C_OBJECT(TableView)
 public:
-    virtual ~TableView() override;
+    virtual ~TableView() override = default;
 
     enum class GridStyle {
         None,
diff --git a/Userland/Libraries/LibGUI/TextBox.cpp b/Userland/Libraries/LibGUI/TextBox.cpp
index 909cd9627a..c70d2cd862 100644
--- a/Userland/Libraries/LibGUI/TextBox.cpp
+++ b/Userland/Libraries/LibGUI/TextBox.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -19,10 +20,6 @@ TextBox::TextBox()
     set_fixed_height(22);
 }
 
-TextBox::~TextBox()
-{
-}
-
 void TextBox::keydown_event(GUI::KeyEvent& event)
 {
     TextEditor::keydown_event(event);
@@ -87,10 +84,6 @@ UrlBox::UrlBox()
     set_auto_focusable(false);
 }
 
-UrlBox::~UrlBox()
-{
-}
-
 void UrlBox::focusout_event(GUI::FocusEvent& event)
 {
     set_focus_transition(true);
diff --git a/Userland/Libraries/LibGUI/TextBox.h b/Userland/Libraries/LibGUI/TextBox.h
index ccc53722c1..fc73af4d74 100644
--- a/Userland/Libraries/LibGUI/TextBox.h
+++ b/Userland/Libraries/LibGUI/TextBox.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ namespace GUI {
 class TextBox : public TextEditor {
     C_OBJECT(TextBox)
 public:
-    virtual ~TextBox() override;
+    virtual ~TextBox() override = default;
 
     Function<void()> on_up_pressed;
     Function<void()> on_down_pressed;
@@ -48,7 +49,7 @@ private:
 class UrlBox : public TextBox {
     C_OBJECT(UrlBox)
 public:
-    virtual ~UrlBox() override;
+    virtual ~UrlBox() override = default;
 
     void set_focus_transition(bool focus_transition) { m_focus_transition = focus_transition; }
     bool is_focus_transition() const { return m_focus_transition; }
diff --git a/Userland/Libraries/LibGUI/TextDocument.cpp b/Userland/Libraries/LibGUI/TextDocument.cpp
index e24b3a388f..4cf24c83b6 100644
--- a/Userland/Libraries/LibGUI/TextDocument.cpp
+++ b/Userland/Libraries/LibGUI/TextDocument.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -35,10 +36,6 @@ TextDocument::TextDocument(Client* client)
     };
 }
 
-TextDocument::~TextDocument()
-{
-}
-
 bool TextDocument::set_text(StringView text, AllowCallback allow_callback)
 {
     m_client_notifications_enabled = false;
@@ -289,10 +286,6 @@ void TextDocument::remove_all_lines()
     }
 }
 
-TextDocument::Client::~Client()
-{
-}
-
 void TextDocument::register_client(Client& client)
 {
     m_clients.set(&client);
@@ -753,10 +746,6 @@ TextDocumentUndoCommand::TextDocumentUndoCommand(TextDocument& document)
 {
 }
 
-TextDocumentUndoCommand::~TextDocumentUndoCommand()
-{
-}
-
 InsertTextCommand::InsertTextCommand(TextDocument& document, const String& text, const TextPosition& position)
     : TextDocumentUndoCommand(document)
     , m_text(text)
diff --git a/Userland/Libraries/LibGUI/TextDocument.h b/Userland/Libraries/LibGUI/TextDocument.h
index efe7a3e4e0..db611dda69 100644
--- a/Userland/Libraries/LibGUI/TextDocument.h
+++ b/Userland/Libraries/LibGUI/TextDocument.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -40,7 +41,7 @@ public:
 
     class Client {
     public:
-        virtual ~Client();
+        virtual ~Client() = default;
         virtual void document_did_append_line() = 0;
         virtual void document_did_insert_line(size_t) = 0;
         virtual void document_did_remove_line(size_t) = 0;
@@ -55,7 +56,7 @@ public:
     };
 
     static NonnullRefPtr<TextDocument> create(Client* client = nullptr);
-    virtual ~TextDocument();
+    virtual ~TextDocument() = default;
 
     size_t line_count() const { return m_lines.size(); }
     const TextDocumentLine& line(size_t line_index) const { return m_lines[line_index]; }
@@ -187,7 +188,7 @@ private:
 class TextDocumentUndoCommand : public Command {
 public:
     TextDocumentUndoCommand(TextDocument&);
-    virtual ~TextDocumentUndoCommand();
+    virtual ~TextDocumentUndoCommand() = default;
     virtual void perform_formatting(const TextDocument::Client&) { }
 
     void execute_from(const TextDocument::Client& client)
diff --git a/Userland/Libraries/LibGUI/TextRange.h b/Userland/Libraries/LibGUI/TextRange.h
index de9f13102c..736e2baa3d 100644
--- a/Userland/Libraries/LibGUI/TextRange.h
+++ b/Userland/Libraries/LibGUI/TextRange.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -12,7 +13,7 @@ namespace GUI {
 
 class TextRange {
 public:
-    TextRange() { }
+    TextRange() = default;
     TextRange(const TextPosition& start, const TextPosition& end)
         : m_start(start)
         , m_end(end)
diff --git a/Userland/Libraries/LibGUI/Toolbar.cpp b/Userland/Libraries/LibGUI/Toolbar.cpp
index b87d172a3d..f42865341f 100644
--- a/Userland/Libraries/LibGUI/Toolbar.cpp
+++ b/Userland/Libraries/LibGUI/Toolbar.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -35,15 +36,11 @@ Toolbar::Toolbar(Orientation orientation, int button_size)
     layout()->set_margins({ 2, 2, 2, 2 });
 }
 
-Toolbar::~Toolbar()
-{
-}
-
 class ToolbarButton final : public Button {
     C_OBJECT(ToolbarButton);
 
 public:
-    virtual ~ToolbarButton() override { }
+    virtual ~ToolbarButton() override = default;
 
 private:
     explicit ToolbarButton(Action& action)
diff --git a/Userland/Libraries/LibGUI/Toolbar.h b/Userland/Libraries/LibGUI/Toolbar.h
index 8070867d2b..0c51a82c6b 100644
--- a/Userland/Libraries/LibGUI/Toolbar.h
+++ b/Userland/Libraries/LibGUI/Toolbar.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,7 +16,7 @@ namespace GUI {
 class Toolbar : public Widget {
     C_OBJECT(Toolbar)
 public:
-    virtual ~Toolbar() override;
+    virtual ~Toolbar() override = default;
 
     ErrorOr<NonnullRefPtr<GUI::Button>> try_add_action(GUI::Action&);
     ErrorOr<void> try_add_separator();
diff --git a/Userland/Libraries/LibGUI/Tray.cpp b/Userland/Libraries/LibGUI/Tray.cpp
index a15c095fce..a2cea687e1 100644
--- a/Userland/Libraries/LibGUI/Tray.cpp
+++ b/Userland/Libraries/LibGUI/Tray.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -21,10 +22,6 @@ Tray::Tray()
     set_focus_policy(GUI::FocusPolicy::TabFocus);
 }
 
-Tray::~Tray()
-{
-}
-
 Gfx::IntRect Tray::Item::rect(Tray const& tray) const
 {
     static constexpr int item_height = 22;
diff --git a/Userland/Libraries/LibGUI/Tray.h b/Userland/Libraries/LibGUI/Tray.h
index 57e019fe01..9ffe2282d0 100644
--- a/Userland/Libraries/LibGUI/Tray.h
+++ b/Userland/Libraries/LibGUI/Tray.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,7 +16,7 @@ class Tray : public GUI::Frame {
     C_OBJECT(Tray);
 
 public:
-    virtual ~Tray() override;
+    virtual ~Tray() override = default;
 
     size_t add_item(String text, RefPtr<Gfx::Bitmap>, String custom_data);
 
diff --git a/Userland/Libraries/LibGUI/TreeView.cpp b/Userland/Libraries/LibGUI/TreeView.cpp
index c7f6d0f390..50a20e9e94 100644
--- a/Userland/Libraries/LibGUI/TreeView.cpp
+++ b/Userland/Libraries/LibGUI/TreeView.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -43,10 +44,6 @@ TreeView::TreeView()
     m_collapse_bitmap = Gfx::Bitmap::try_load_from_file("/res/icons/serenity/treeview-collapse.png").release_value_but_fixme_should_propagate_errors();
 }
 
-TreeView::~TreeView()
-{
-}
-
 ModelIndex TreeView::index_at_event_position(const Gfx::IntPoint& a_position, bool& is_toggle) const
 {
     auto position = a_position.translated(0, -column_header().height()).translated(horizontal_scrollbar().value() - frame_thickness(), vertical_scrollbar().value() - frame_thickness());
diff --git a/Userland/Libraries/LibGUI/TreeView.h b/Userland/Libraries/LibGUI/TreeView.h
index 6b91783af1..abb9c40436 100644
--- a/Userland/Libraries/LibGUI/TreeView.h
+++ b/Userland/Libraries/LibGUI/TreeView.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -14,7 +15,7 @@ namespace GUI {
 class TreeView : public AbstractTableView {
     C_OBJECT(TreeView)
 public:
-    virtual ~TreeView() override;
+    virtual ~TreeView() override = default;
 
     virtual void scroll_into_view(const ModelIndex&, bool scroll_horizontally, bool scroll_vertically) override;
 
diff --git a/Userland/Libraries/LibGUI/UndoStack.cpp b/Userland/Libraries/LibGUI/UndoStack.cpp
index 6c265672c4..6ac2205648 100644
--- a/Userland/Libraries/LibGUI/UndoStack.cpp
+++ b/Userland/Libraries/LibGUI/UndoStack.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -9,14 +10,6 @@
 
 namespace GUI {
 
-UndoStack::UndoStack()
-{
-}
-
-UndoStack::~UndoStack()
-{
-}
-
 bool UndoStack::can_undo() const
 {
     return m_stack_index > 0;
diff --git a/Userland/Libraries/LibGUI/UndoStack.h b/Userland/Libraries/LibGUI/UndoStack.h
index cfc0b2c6ca..ab58d140e5 100644
--- a/Userland/Libraries/LibGUI/UndoStack.h
+++ b/Userland/Libraries/LibGUI/UndoStack.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,8 +16,8 @@ namespace GUI {
 
 class UndoStack {
 public:
-    UndoStack();
-    ~UndoStack();
+    UndoStack() = default;
+    ~UndoStack() = default;
 
     void push(NonnullOwnPtr<Command>);
 
diff --git a/Userland/Libraries/LibGUI/ValueSlider.cpp b/Userland/Libraries/LibGUI/ValueSlider.cpp
index 42e09f0be7..b7995fd0f8 100644
--- a/Userland/Libraries/LibGUI/ValueSlider.cpp
+++ b/Userland/Libraries/LibGUI/ValueSlider.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Marcus Nilsson <brainbomb@gmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -67,10 +68,6 @@ ValueSlider::ValueSlider(Gfx::Orientation orientation, String suffix)
     };
 }
 
-ValueSlider::~ValueSlider()
-{
-}
-
 String ValueSlider::formatted_value() const
 {
     return String::formatted("{:2}{}", value(), m_suffix);
diff --git a/Userland/Libraries/LibGUI/ValueSlider.h b/Userland/Libraries/LibGUI/ValueSlider.h
index 8fa3e8c2cc..546917fbdd 100644
--- a/Userland/Libraries/LibGUI/ValueSlider.h
+++ b/Userland/Libraries/LibGUI/ValueSlider.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Marcus Nilsson <brainbomb@gmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -19,7 +20,7 @@ public:
         Thin,
     };
 
-    virtual ~ValueSlider() override;
+    virtual ~ValueSlider() override = default;
 
     void set_suffix(String suffix) { m_suffix = move(suffix); }
     void set_knob_style(KnobStyle knobstyle) { m_knob_style = knobstyle; }
diff --git a/Userland/Libraries/LibGUI/Widget.cpp b/Userland/Libraries/LibGUI/Widget.cpp
index 6f094a6d6c..7686960b5e 100644
--- a/Userland/Libraries/LibGUI/Widget.cpp
+++ b/Userland/Libraries/LibGUI/Widget.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -188,9 +189,7 @@ Widget::Widget()
         });
 }
 
-Widget::~Widget()
-{
-}
+Widget::~Widget() = default;
 
 void Widget::child_event(Core::ChildEvent& event)
 {
diff --git a/Userland/Libraries/LibGUI/Widget.h b/Userland/Libraries/LibGUI/Widget.h
index c6e1391269..f6fb217c2e 100644
--- a/Userland/Libraries/LibGUI/Widget.h
+++ b/Userland/Libraries/LibGUI/Widget.h
@@ -12,6 +12,7 @@
 #include <AK/String.h>
 #include <AK/Variant.h>
 #include <LibCore/Object.h>
+#include <LibCore/Timer.h>
 #include <LibGUI/Event.h>
 #include <LibGUI/FocusPolicy.h>
 #include <LibGUI/Forward.h>
diff --git a/Userland/Libraries/LibGUI/Wizards/AbstractWizardPage.cpp b/Userland/Libraries/LibGUI/Wizards/AbstractWizardPage.cpp
index b52e90a5c4..b8ae89085d 100644
--- a/Userland/Libraries/LibGUI/Wizards/AbstractWizardPage.cpp
+++ b/Userland/Libraries/LibGUI/Wizards/AbstractWizardPage.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Nick Vella <nick@nxk.io>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -8,14 +9,6 @@
 
 namespace GUI {
 
-AbstractWizardPage::AbstractWizardPage()
-{
-}
-
-AbstractWizardPage::~AbstractWizardPage()
-{
-}
-
 RefPtr<AbstractWizardPage> AbstractWizardPage::next_page()
 {
     if (on_next_page)
diff --git a/Userland/Libraries/LibGUI/Wizards/AbstractWizardPage.h b/Userland/Libraries/LibGUI/Wizards/AbstractWizardPage.h
index a1d6d41316..8b518a4f3d 100644
--- a/Userland/Libraries/LibGUI/Wizards/AbstractWizardPage.h
+++ b/Userland/Libraries/LibGUI/Wizards/AbstractWizardPage.h
@@ -15,7 +15,7 @@ class AbstractWizardPage : public Widget {
     C_OBJECT_ABSTRACT(AbstractWizardPage);
 
 public:
-    virtual ~AbstractWizardPage() override;
+    virtual ~AbstractWizardPage() override = default;
 
     Function<RefPtr<AbstractWizardPage>()> on_next_page;
     virtual RefPtr<AbstractWizardPage> next_page();
@@ -31,7 +31,7 @@ public:
     void set_is_final_page(bool val) { m_is_final_page = val; }
 
 protected:
-    AbstractWizardPage();
+    AbstractWizardPage() = default;
 
 private:
     bool m_is_final_page { false };
diff --git a/Userland/Libraries/LibGUI/Wizards/WizardDialog.cpp b/Userland/Libraries/LibGUI/Wizards/WizardDialog.cpp
index a1978fd511..c1d3cad741 100644
--- a/Userland/Libraries/LibGUI/Wizards/WizardDialog.cpp
+++ b/Userland/Libraries/LibGUI/Wizards/WizardDialog.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Nick Vella <nick@nxk.io>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -78,10 +79,6 @@ WizardDialog::WizardDialog(Window* parent_window)
     update_navigation();
 }
 
-WizardDialog::~WizardDialog()
-{
-}
-
 void WizardDialog::push_page(AbstractWizardPage& page)
 {
     if (!m_page_stack.is_empty())
diff --git a/Userland/Libraries/LibGUI/Wizards/WizardDialog.h b/Userland/Libraries/LibGUI/Wizards/WizardDialog.h
index d87f43c097..f8ce753025 100644
--- a/Userland/Libraries/LibGUI/Wizards/WizardDialog.h
+++ b/Userland/Libraries/LibGUI/Wizards/WizardDialog.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Nick Vella <nick@nxk.io>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,7 +16,7 @@ namespace GUI {
 class WizardDialog : public Dialog {
     C_OBJECT(WizardDialog)
 public:
-    virtual ~WizardDialog() override;
+    virtual ~WizardDialog() override = default;
 
     static void show(AbstractWizardPage& first_page, Window* parent_window = nullptr)
     {