mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-16 16:16:40 +03:00
Jacob Trimble
96 lines
2.9 KiB
JavaScript
96 lines
2.9 KiB
JavaScript
/**
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* @license
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* Copyright 2016 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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goog.provide('shaka.polyfill.InputEvent');
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goog.require('shaka.log');
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goog.require('shaka.polyfill');
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/**
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* @summary A polyfill to patch 'input' event support in IE11.
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*/
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shaka.polyfill.InputEvent = class {
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/**
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* Install the polyfill if needed.
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*/
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static install() {
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shaka.log.debug('InputEvent.install');
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// IE11 doesn't treat the 'input' event correctly.
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// https://bit.ly/2loLsuX
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if (!shaka.util.Platform.isIE()) {
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// Not IE, so don't patch anything.
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return;
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}
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// In our tests, we can end up with multiple independent "shaka" namespaces.
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// So we can't compare addEventListener with the polyfill directly.
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// Instead, store the original in a globally accessible place and check if
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// that has been used yet.
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// eslint-disable-next-line no-restricted-syntax
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if (HTMLInputElement.prototype['originalAddEventListener']) {
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// The polyfill was already installed.
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return;
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}
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shaka.log.info('Patching input event support on IE.');
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// eslint-disable-next-line no-restricted-syntax
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HTMLInputElement.prototype['originalAddEventListener'] =
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// eslint-disable-next-line no-restricted-syntax
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HTMLInputElement.prototype.addEventListener;
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// eslint-disable-next-line no-restricted-syntax
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HTMLInputElement.prototype['addEventListener'] =
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// eslint-disable-next-line no-restricted-syntax
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shaka.polyfill.InputEvent.addEventListener_;
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}
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/**
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* Add an event listener to this object and translate the event types to those
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* that work on IE11.
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*
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* @param {string} type
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* @param {EventListener|function(!Event):(boolean|undefined)} listener
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* @param {(!AddEventListenerOptions|boolean)=} options
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* @this {HTMLInputElement}
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* @private
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*/
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static addEventListener_(type, listener, options) {
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if (type == 'input') {
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// Based on the type of input element, translate the HTML5 'input' event
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// to one that IE11 will actually dispatch.
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switch (this.type) {
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// For range inputs, we use the 'change' event.
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case 'range':
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type = 'change';
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break;
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}
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}
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// eslint-disable-next-line no-restricted-syntax
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HTMLInputElement.prototype['originalAddEventListener'].call(
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this, type, listener, options);
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}
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};
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shaka.polyfill.register(shaka.polyfill.InputEvent.install);
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