/*! @license
* Shaka Player
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
goog.provide('shaka.polyfill.VideoPlayPromise');
goog.require('shaka.log');
goog.require('shaka.polyfill');
/**
* @summary A polyfill to silence the play() Promise in HTML5 video.
* @export
*/
shaka.polyfill.VideoPlayPromise = class {
/**
* Install the polyfill if needed.
* @export
*/
static install() {
shaka.log.debug('VideoPlayPromise.install');
if (window.HTMLMediaElement) {
// eslint-disable-next-line no-restricted-syntax
const originalPlay = HTMLMediaElement.prototype.play;
// eslint-disable-next-line no-restricted-syntax
HTMLMediaElement.prototype.play = function() {
// eslint-disable-next-line no-restricted-syntax
const p = originalPlay.apply(this);
if (p) {
// This browser is returning a Promise from play().
// If the play() call fails or is interrupted, the Promise will be
// rejected. Some apps, however, don't listen to this Promise,
// especially since it is not available cross-browser. If the Promise
// is rejected without anyone listening for the failure, an error will
// appear in the JS console.
// To avoid confusion over this innocuous "error", we will install a
// catch handler on the Promise. This does not prevent the app from
// also catching failures and handling them. It only prevents the
// console message.
p.catch(() => {});
}
return p;
};
}
}
};
shaka.polyfill.register(shaka.polyfill.VideoPlayPromise.install);