protected function _actionBrowse($context)
    {
        $sets = parent::_actionBrowse($context);
        $sets->order('updateTime', 'DESC');

        if ($this->photo_id && $this->getRequest()->get('layout') != 'selector') {
            $sets->where('photos.id', '=', $this->photo_id);
        }

        return $sets;
    }