protected function createCompositeWidgets()
    {
        $flydown = new SwatFlydown($this->id . '_action_flydown');
        $flydown->show_blank = $this->show_blank;

        $this->addCompositeWidget($flydown, 'action_flydown');

        $button = new SwatButton($this->id . '_apply_button');
        $this->addCompositeWidget($button, 'apply_button');
    }