/** * Define widget params * * @return void */ protected function defineWidgetParams() { parent::defineWidgetParams(); $this->widgetParams += array(self::PARAM_GROUP => new \XLite\Model\WidgetParam\Object('Group', null, false, '\\XLite\\Model\\AttributeGroup'), self::PARAM_CLASSES => new \XLite\Model\WidgetParam\Collection('Product classes', array())); }