public function __construct(Widget $original, Widget $copy)
 {
     parent::__construct($original);
     $this->copy = $copy;
 }
 public function onWidgetSave(WidgetEvent $event)
 {
     $settings = $this->getSettings();
     $settings[$event->getWidget()->getId()] = $this['request']->get('_theme', []);
     $this->setSettings($settings);
 }