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// 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/>.
/**
* Detects if an element is fullscreen.
*
* @module core/fullscreen
* @copyright 2020 University of Nottingham
* @author Neill Magill <neill.magill@nottingham.ac.uk>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/**
* Gets the element that is fullscreen or null if no element is fullscreen.
*
* @method
* @returns {HTMLElement}
*/
export const getElement = () => {
let element = null;
if (document.fullscreenElement) {
element = document.fullscreenElement;
} else if (document.mozFullscreenElement) {
// Fallback for older Firefox.
element = document.mozFullscreenElement;
} else if (document.msFullscreenElement) {
// Fallback for Edge and IE.
element = document.msFullscreenElement;
} else if (document.webkitFullscreenElement) {
// Fallback for Chrome, Edge and Safari.
element = document.webkitFullscreenElement;
}
return element;
};
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