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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Detects if an element is fullscreen.
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*
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* @module core/fullscreen
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* @copyright 2020 University of Nottingham
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* @author Neill Magill <neill.magill@nottingham.ac.uk>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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/**
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* Gets the element that is fullscreen or null if no element is fullscreen.
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*
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* @method
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* @returns {HTMLElement}
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*/
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export const getElement = () => {
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let element = null;
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if (document.fullscreenElement) {
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element = document.fullscreenElement;
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} else if (document.mozFullscreenElement) {
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// Fallback for older Firefox.
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element = document.mozFullscreenElement;
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} else if (document.msFullscreenElement) {
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// Fallback for Edge and IE.
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element = document.msFullscreenElement;
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} else if (document.webkitFullscreenElement) {
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// Fallback for Chrome, Edge and Safari.
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element = document.webkitFullscreenElement;
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}
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return element;
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};
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