/// <summary>
/// Adds an accelerator given a command with keyboard shortcut information defined.
/// </summary>
/// <param name="command">For convenience - not actually used.</param>
/// <param name="visual">The visual for which to register the accelerator.</param>
/// <param name="key">The keyboard shortcut.</param>
/// <remarks>If the visual is null, the shortcut will be registered using the
/// current application's MainWindow. In any case, all accelerators are placed in
/// the first accelerator group associated with the application's main window.</remarks>
public static void AddAccelerator(this VisualRelayCommand command, Gtk.Widget visual, Gtk.AccelKey key)
{
var mainWindow = SingleInstanceApplication.Instance.MainWindow;
visual = visual ?? mainWindow;
var groups = Gtk.Accel.GroupsFromObject(mainWindow);
var createAccelGroup = (groups == null) || (groups.Length < 1);
var accelGroup = createAccelGroup ? new Gtk.AccelGroup() : groups[0];
if (createAccelGroup)
{
mainWindow.AddAccelGroup(accelGroup);
}
visual.AddAccelerator("activate", accelGroup, (uint)key.Key, key.AccelMods, key.AccelFlags);
}
