protected function _actionBrowse($context)
    {
        $this->getService('repos:photos.set');
        $photos = parent::_actionBrowse($context);
        $photos->order('creationTime', 'DESC');

        if ($this->exclude_set != '') {
            $set = $this->actor->sets->fetch(array('id' => $this->exclude_set));

            if (!empty($set)) {
                $photo_ids = array();

                foreach ($set->photos as $photo) {
                    $photo_ids[] = $photo->id;
                }

                if (count($photo_ids)) {
                    $photos->where('photo.id', '<>', $photo_ids);
                }
            }
        }

        return $photos;
    }