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path: root/Userland/Services/Taskbar/QuickLaunchWidget.cpp
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/*
 * Copyright (c) 2021, Fabian Blatz <fabianblatz@gmail.com>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include "QuickLaunchWidget.h"
#include <LibConfig/Client.h>
#include <LibCore/MimeData.h>
#include <LibCore/System.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Menu.h>
#include <LibGUI/MessageBox.h>
#include <serenity.h>

namespace Taskbar {

constexpr auto quick_launch = "QuickLaunch"sv;
constexpr int quick_launch_button_size = 24;

ErrorOr<void> QuickLaunchEntryAppFile::launch() const
{
    auto executable = m_app_file->executable();

    pid_t pid = TRY(Core::System::fork());
    if (pid == 0) {
        if (chdir(Core::StandardPaths::home_directory().characters()) < 0) {
            perror("chdir");
            exit(1);
        }
        if (m_app_file->run_in_terminal())
            execl("/bin/Terminal", "Terminal", "-e", executable.characters(), nullptr);
        else
            execl(executable.characters(), executable.characters(), nullptr);
        perror("execl");
        VERIFY_NOT_REACHED();
    } else
        TRY(Core::System::disown(pid));
    return {};
}

QuickLaunchWidget::QuickLaunchWidget()
{
    set_shrink_to_fit(true);
    set_layout<GUI::HorizontalBoxLayout>();
    layout()->set_spacing(0);
    set_frame_thickness(0);
    set_fixed_height(24);

    m_context_menu = GUI::Menu::construct();
    m_context_menu_default_action = GUI::Action::create("&Remove", [this](auto&) {
        Config::remove_key("Taskbar", quick_launch, m_context_menu_app_name);
        auto button = find_child_of_type_named<GUI::Button>(m_context_menu_app_name);
        if (button) {
            remove_child(*button);
        }
    });
    m_context_menu->add_action(*m_context_menu_default_action);

    auto keys = Config::list_keys("Taskbar", quick_launch);
    for (auto& name : keys) {
        auto value = Config::read_string("Taskbar", quick_launch, name);
        auto entry = QuickLaunchEntry::create_from_config_value(value);
        if (!entry)
            continue;
        add_or_adjust_button(name, entry.release_nonnull());
    }
}

QuickLaunchWidget::~QuickLaunchWidget()
{
}

OwnPtr<QuickLaunchEntry> QuickLaunchEntry::create_from_config_value(StringView value)
{
    if (value.ends_with(".af")) {
        auto af_path = String::formatted("{}/{}", Desktop::AppFile::APP_FILES_DIRECTORY, value);
        return make<QuickLaunchEntryAppFile>(Desktop::AppFile::open(af_path));
    }
    return {};
}

OwnPtr<QuickLaunchEntry> QuickLaunchEntry::create_from_path(StringView path)
{
    if (path.ends_with(".af"))
        return make<QuickLaunchEntryAppFile>(Desktop::AppFile::open(path));
    return {};
}

void QuickLaunchWidget::add_or_adjust_button(String const& button_name, NonnullOwnPtr<QuickLaunchEntry>&& entry)
{
    auto button = find_child_of_type_named<GUI::Button>(button_name);
    if (!button)
        button = &add<GUI::Button>();

    button->set_fixed_size(quick_launch_button_size, quick_launch_button_size);
    button->set_button_style(Gfx::ButtonStyle::Coolbar);
    auto icon = entry->icon();
    button->set_icon(icon.bitmap_for_size(16));
    button->set_tooltip(entry->name());
    button->set_name(button_name);
    button->on_click = [entry = move(entry), this](auto) {
        auto result = entry->launch();
        if (result.is_error())
            GUI::MessageBox::show_error(window(), String::formatted("Failed to open quick launch entry: {}", result.release_error()));
    };
    button->on_context_menu_request = [this, button_name](auto& context_menu_event) {
        m_context_menu_app_name = button_name;
        m_context_menu->popup(context_menu_event.screen_position(), m_context_menu_default_action);
    };
}

void QuickLaunchWidget::config_key_was_removed(String const& domain, String const& group, String const& key)
{
    if (domain == "Taskbar" && group == quick_launch) {
        auto button = find_child_of_type_named<GUI::Button>(key);
        if (button)
            remove_child(*button);
    }
}

void QuickLaunchWidget::config_string_did_change(String const& domain, String const& group, String const& key, String const& value)
{
    if (domain == "Taskbar" && group == quick_launch) {
        auto entry = QuickLaunchEntry::create_from_config_value(value);
        if (!entry)
            return;
        add_or_adjust_button(key, entry.release_nonnull());
    }
}

void QuickLaunchWidget::drop_event(GUI::DropEvent& event)
{
    event.accept();

    if (event.mime_data().has_urls()) {
        auto urls = event.mime_data().urls();
        for (auto& url : urls) {
            auto entry = QuickLaunchEntry::create_from_path(url.path());
            if (entry) {
                auto item_name = entry->name().replace(" ", "", true);
                add_or_adjust_button(item_name, entry.release_nonnull());
                Config::write_string("Taskbar", quick_launch, item_name, url.basename());
            }
        }
    }
}

}