protected function _actionBrowse($context)
    {
        if (!$context->query) {
            $context->query = $this->getRepository()->getQuery();
        }

        $query = $context->query;
        $query->order('open', 'DESC');

        if ($this->sort == 'priority') {
            $query->order('priority', 'DESC');
        }

        return parent::_actionBrowse($context);
    }