| /* |
| * Copyright (C) 2018 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| function enterFullscreen() { |
| |
| let callback = arguments[0]; |
| if (!document.webkitFullscreenEnabled) { |
| callback(false); |
| return; |
| } |
| |
| if (document.webkitIsFullScreen) { |
| callback(true); |
| return; |
| } |
| |
| let fullscreenChangeListener, fullscreenErrorListener; |
| fullscreenChangeListener = (e) => { |
| // Some other element went fullscreen, we didn't request it. |
| if (e.target !== document.documentElement) |
| return; |
| |
| if (!document.webkitIsFullScreen) |
| return; |
| |
| document.removeEventListener("webkitfullscreenerror", fullscreenChangeListener); |
| document.documentElement.removeEventListener("webkitfullscreenchange", fullscreenErrorListener); |
| callback(true); |
| }; |
| fullscreenErrorListener = (e) => { |
| // Some other element caused an error, we didn't request it. |
| if (e.target !== document.documentElement) |
| return; |
| |
| document.removeEventListener("webkitfullscreenchange", fullscreenChangeListener); |
| document.documentElement.removeEventListener("webkitfullscreenerror", fullscreenErrorListener); |
| callback(!!document.webkitIsFullScreen); |
| }; |
| |
| // The document fires change events, but the fullscreen element fires error events. |
| document.addEventListener("webkitfullscreenchange", fullscreenChangeListener); |
| document.documentElement.addEventListener("webkitfullscreenerror", fullscreenErrorListener); |
| document.documentElement.webkitRequestFullscreen(); |
| } |