ladybird/Userland/Demos/Screensaver/main.cpp
Sam Atkins 0c24522635 LibGUI+Everywhere: Use fallible Window::set_main_widget() everywhere :^)
Rip that bandaid off!

This does the following, in one big, awkward jump:
- Replace all uses of `set_main_widget<Foo>()` with the `try` version.
- Remove `set_main_widget<Foo>()`.
- Rename the `try` version to just be `set_main_widget` because it's now
  the only one.

The majority of places that call `set_main_widget<Foo>()` are inside
constructors, so this unfortunately gives us a big batch of new
`release_value_but_fixme_should_propagate_errors()` calls.
2023-01-06 13:36:02 -07:00

108 lines
3.6 KiB
C++

/*
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/QuickSort.h>
#include <LibCore/System.h>
#include <LibDesktop/AppFile.h>
#include <LibGUI/Application.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Icon.h>
#include <LibGUI/IconView.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Model.h>
#include <LibGUI/Process.h>
#include <LibGUI/Window.h>
#include <LibMain/Main.h>
class ScreensaverAppsModel final : public GUI::Model {
public:
ScreensaverAppsModel()
{
Desktop::AppFile::for_each([&](Desktop::AppFile& app_file) {
if (app_file.category() != "Demos/Screensaver"sv)
return;
m_apps.append(app_file);
});
quick_sort(m_apps, [](auto& a, auto& b) { return a->name() < b->name(); });
}
virtual int row_count(GUI::ModelIndex const&) const override { return static_cast<int>(m_apps.size()); }
virtual int column_count(GUI::ModelIndex const&) const override { return 1; }
virtual GUI::ModelIndex index(int row, int column, GUI::ModelIndex const&) const override
{
if (row < 0 || row >= static_cast<int>(m_apps.size()))
return {};
return create_index(row, column, &m_apps[row]);
}
virtual GUI::Variant data(GUI::ModelIndex const& index, GUI::ModelRole role) const override
{
auto const& app = m_apps[index.row()];
if (role == GUI::ModelRole::Icon)
return app->icon();
if (role == GUI::ModelRole::Display) {
if (app->name().ends_with(" Screensaver"sv))
return app->name().substring(0, app->name().length() - " Screensaver"sv.length());
return app->name();
}
if (role == GUI::ModelRole::Custom)
return app->executable();
return {};
}
private:
// NonnullRefPtrVector doesn't allow us to quick_sort() it, because its operator[] returns T&.
Vector<NonnullRefPtr<Desktop::AppFile>> m_apps;
};
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio thread recvfd sendfd rpath cpath wpath unix proc exec"));
auto app = TRY(GUI::Application::try_create(arguments));
TRY(Core::System::pledge("stdio thread recvfd sendfd rpath cpath wpath proc exec"));
auto app_icon = GUI::Icon::default_icon("app-screensaver"sv);
auto window = TRY(GUI::Window::try_create());
window->set_title("Screensaver");
window->resize(360, 240);
auto file_menu = TRY(window->try_add_menu("&File"));
file_menu->add_action(GUI::CommonActions::make_quit_action([&](auto&) {
app->quit();
}));
auto help_menu = TRY(window->try_add_menu("&Help"));
TRY(help_menu->try_add_action(GUI::CommonActions::make_command_palette_action(window)));
TRY(help_menu->try_add_action(GUI::CommonActions::make_about_action("Screensaver", app_icon, window)));
auto main_widget = TRY(window->set_main_widget<GUI::Widget>());
main_widget->set_fill_with_background_color(true);
main_widget->set_layout<GUI::VerticalBoxLayout>();
auto icon_view = TRY(main_widget->try_add<GUI::IconView>());
icon_view->set_should_hide_unnecessary_scrollbars(true);
auto model = adopt_ref(*new ScreensaverAppsModel);
icon_view->set_model(*model);
icon_view->on_activation = [&](GUI::ModelIndex const& index) {
auto executable = model->data(index, GUI::ModelRole::Custom).as_string();
GUI::Process::spawn_or_show_error(window, executable);
};
window->set_icon(app_icon.bitmap_for_size(16));
window->show();
return app->exec();
}