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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Main class for plugin 'media_vimeo'
 *
 * @package   media_vimeo
 * @copyright 2016 Marina Glancy
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

/**
 * Player that embeds Vimeo links.
 *
 * @package   media_vimeo
 * @copyright 2016 Marina Glancy
 * @author    2011 The Open University
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class media_vimeo_plugin extends core_media_player_external {
    protected function embed_external(moodle_url $url, $name, $width, $height, $options) {
        $videoid = $this->matches[1];
        $info = s($name);

// Note: resizing via url is not supported, user can click the fullscreen
        // button instead. iframe embedding is not xhtml strict but it is the only
        // option that seems to work on most devices.
        self::pick_video_size($width, $height);

$output = <<<OET
<span class="mediaplugin mediaplugin_vimeo">
<iframe title="$info" src="https://player.vimeo.com/video/$videoid"
  width="$width" height="$height" frameborder="0"
  webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>
</span>
OET;

return $output;
    }

/**
     * Returns regular expression to match vimeo URLs.
     * @return string
     */
    protected function get_regex() {
        // Initial part of link.
        $start = '~^https?://vimeo\.com/';
        // Middle bit: either watch?v= or v/.
        $middle = '([0-9]+)';
        return $start . $middle . core_media_player_external::END_LINK_REGEX_PART;
    }

public function get_embeddable_markers() {
        return array('vimeo.com/');
    }

/**
     * Default rank
     * @return int
     */
    public function get_rank() {
        return 1010;
    }
}