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https://github.com/RGBCube/serenity
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LibGUI: Add a simple "recently open files" feature
This feature allows any application to easily install an automatically updating list of recently open files in a GUI::Menu. There are three main pieces to this mechanism: - GUI::Application::set_config_domain(domain): This must be called before using the recent files feature. It informs the Application object about which config domain to find the relevant RecentFiles list under. - GUI::Menu::add_recently_open_files(callback): This inserts the list in a menu. A callback must be provided to handle actually opening the recent file in some application-specific way. - GUI::Application::set_most_recently_open_file(path): This updates the list of recently open files, both in the configuration files, and in the GUI menu.
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4 changed files with 112 additions and 0 deletions
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@ -5,6 +5,7 @@
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*/
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#include <AK/NeverDestroyed.h>
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#include <LibConfig/Client.h>
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#include <LibCore/EventLoop.h>
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#include <LibGUI/Action.h>
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#include <LibGUI/Application.h>
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@ -324,4 +325,74 @@ void Application::event(Core::Event& event)
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Object::event(event);
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}
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void Application::set_config_domain(String config_domain)
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{
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m_config_domain = move(config_domain);
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}
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void Application::register_recent_file_actions(Badge<GUI::Menu>, Vector<NonnullRefPtr<GUI::Action>> actions)
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{
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m_recent_file_actions = move(actions);
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update_recent_file_actions();
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}
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void Application::update_recent_file_actions()
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{
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VERIFY(!m_config_domain.is_empty());
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size_t number_of_recently_open_files = 0;
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auto update_action = [&](size_t index) {
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auto& action = m_recent_file_actions[index];
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char buffer = static_cast<char>('0' + index);
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auto key = StringView(&buffer, 1);
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auto path = Config::read_string(m_config_domain, "RecentFiles"sv, key);
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if (path.is_empty()) {
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action->set_visible(false);
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action->set_enabled(false);
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} else {
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action->set_visible(true);
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action->set_enabled(true);
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action->set_text(path);
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++number_of_recently_open_files;
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}
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};
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for (size_t i = 0; i < max_recently_open_files(); ++i)
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update_action(i);
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// Hide or show the "(No recently open files)" placeholder.
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m_recent_file_actions.last()->set_visible(number_of_recently_open_files == 0);
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}
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void Application::set_most_recently_open_file(String new_path)
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{
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Vector<DeprecatedString> new_recent_files_list;
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for (size_t i = 0; i < max_recently_open_files(); ++i) {
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static_assert(max_recently_open_files() < 10);
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char buffer = static_cast<char>('0' + i);
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auto key = StringView(&buffer, 1);
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new_recent_files_list.append(Config::read_string(m_config_domain, "RecentFiles"sv, key));
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}
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new_recent_files_list.remove_all_matching([&](auto& existing_path) {
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return existing_path.view() == new_path;
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});
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new_recent_files_list.prepend(new_path.to_deprecated_string());
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for (size_t i = 0; i < max_recently_open_files(); ++i) {
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auto& path = new_recent_files_list[i];
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char buffer = static_cast<char>('0' + i);
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auto key = StringView(&buffer, 1);
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Config::write_string(
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m_config_domain,
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"RecentFiles"sv,
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key,
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path);
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}
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update_recent_file_actions();
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}
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}
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