AppChooserButton
Object Hierarchy:
Description:
public class AppChooserButton : ComboBox, Implementor, AppChooser, Buildable, CellEditable, CellLayout
The AppChooserButton is a widget that lets the user select an application.
It implements the AppChooser interface.
Initially, a AppChooserButton selects the first application in its list, which will either be the most-recently used application or, if show_default_item is true, the default application.
The list of applications shown in a AppChooserButton includes the recommended applications for the given content type. When show_default_item is set, the default application is also included. To let the user chooser other applications, you can set the show_dialog_item property, which allows to open a full AppChooserDialog.
It is possible to add custom items to the list, using append_custom_item. These items cause the custom_item_activated signal to be emitted when they are selected.
To track changes in the selected application, use the changed signal.
Example: AppChooserButton:
public class Application : Gtk.Window {
public Application () {
// Prepare Gtk.Window:
this.title = "My Gtk.AppChooserButton";
this.window_position = Gtk.WindowPosition.CENTER;
this.destroy.connect (Gtk.main_quit);
// The button:
Gtk.AppChooserButton button = new Gtk.AppChooserButton ("image/png");
this.add (button);
// Add a separator line:
button.append_separator ();
// Add a custom entry:
ThemedIcon themed_icon = new ThemedIcon ("folder-new");
button.append_custom_item ("my-image-viewer", "My image Viewer", themed_icon);
// Catch custom selections:
button.custom_item_activated.connect ((item_name) => {
print ("%s\n", item_name);
});
// Catch all selections:
button.changed.connect (() => {
AppInfo info = button.get_app_info ();
if (info != null) {
print ("Selection:\n");
print (" Name: %s\n", info.get_display_name ());
print (" Desc: %s\n", info.get_description ());
}
});
}
public static int main (string[] args) {
Gtk.init (ref args);
Application app = new Application ();
app.show_all ();
Gtk.main ();
return 0;
}
}valac --pkg gtk+-3.0 Gtk.AppChooserButton.vala