private void Setting_Click(object sender, RoutedEventArgs e)
 {
     _settings = new Popups.UISettings();
     _settings.Ok.Click += SettingsOk;
     _settings.Cancel.Click += SettingsCancel;
     UIController.ShowPanel(_settings);
 }
 private void SettingsCancel(object sender, RoutedEventArgs e)
 {
     UIController.HidePanel(_settings);
     _settings = null;
 }