/**
* Define widget parameters
*
* @return void
*/
protected function defineWidgetParams()
{
parent::defineWidgetParams();
$this->widgetParams[self::PARAM_GRID_COLUMNS]->setValue(3);
unset($this->widgetParams[self::PARAM_SHOW_DISPLAY_MODE_SELECTOR]);
unset($this->widgetParams[self::PARAM_SHOW_SORT_BY_SELECTOR]);
}