From 06f7696c0976c75c13435f84a2101c1203c18b95 Mon Sep 17 00:00:00 2001 From: Arjun Satarkar Date: Wed, 17 Jul 2024 19:11:06 +0530 Subject: Initial commit --- priv/static/video.js/alt/video.core.js | 28595 +++++++++++++++++++++++++++++++ 1 file changed, 28595 insertions(+) create mode 100644 priv/static/video.js/alt/video.core.js (limited to 'priv/static/video.js/alt/video.core.js') diff --git a/priv/static/video.js/alt/video.core.js b/priv/static/video.js/alt/video.core.js new file mode 100644 index 0000000..28b38e7 --- /dev/null +++ b/priv/static/video.js/alt/video.core.js @@ -0,0 +1,28595 @@ +/** + * @license + * Video.js 8.12.0 + * Copyright Brightcove, Inc. + * Available under Apache License Version 2.0 + * + * + * Includes vtt.js + * Available under Apache License Version 2.0 + * + */ + +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : + typeof define === 'function' && define.amd ? define(factory) : + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.videojs = factory()); +})(this, (function () { 'use strict'; + + var version = "8.12.0"; + + /** + * An Object that contains lifecycle hooks as keys which point to an array + * of functions that are run when a lifecycle is triggered + * + * @private + */ + const hooks_ = {}; + + /** + * Get a list of hooks for a specific lifecycle + * + * @param {string} type + * the lifecycle to get hooks from + * + * @param {Function|Function[]} [fn] + * Optionally add a hook (or hooks) to the lifecycle that your are getting. + * + * @return {Array} + * an array of hooks, or an empty array if there are none. + */ + const hooks = function (type, fn) { + hooks_[type] = hooks_[type] || []; + if (fn) { + hooks_[type] = hooks_[type].concat(fn); + } + return hooks_[type]; + }; + + /** + * Add a function hook to a specific videojs lifecycle. + * + * @param {string} type + * the lifecycle to hook the function to. + * + * @param {Function|Function[]} + * The function or array of functions to attach. + */ + const hook = function (type, fn) { + hooks(type, fn); + }; + + /** + * Remove a hook from a specific videojs lifecycle. + * + * @param {string} type + * the lifecycle that the function hooked to + * + * @param {Function} fn + * The hooked function to remove + * + * @return {boolean} + * The function that was removed or undef + */ + const removeHook = function (type, fn) { + const index = hooks(type).indexOf(fn); + if (index <= -1) { + return false; + } + hooks_[type] = hooks_[type].slice(); + hooks_[type].splice(index, 1); + return true; + }; + + /** + * Add a function hook that will only run once to a specific videojs lifecycle. + * + * @param {string} type + * the lifecycle to hook the function to. + * + * @param {Function|Function[]} + * The function or array of functions to attach. + */ + const hookOnce = function (type, fn) { + hooks(type, [].concat(fn).map(original => { + const wrapper = (...args) => { + removeHook(type, wrapper); + return original(...args); + }; + return wrapper; + })); + }; + + /** + * @file fullscreen-api.js + * @module fullscreen-api + */ + + /** + * Store the browser-specific methods for the fullscreen API. + * + * @type {Object} + * @see [Specification]{@link https://fullscreen.spec.whatwg.org} + * @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js} + */ + const FullscreenApi = { + prefixed: true + }; + + // browser API methods + const apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror', 'fullscreen'], + // WebKit + ['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror', '-webkit-full-screen']]; + const specApi = apiMap[0]; + let browserApi; + + // determine the supported set of functions + for (let i = 0; i < apiMap.length; i++) { + // check for exitFullscreen function + if (apiMap[i][1] in document) { + browserApi = apiMap[i]; + break; + } + } + + // map the browser API names to the spec API names + if (browserApi) { + for (let i = 0; i < browserApi.length; i++) { + FullscreenApi[specApi[i]] = browserApi[i]; + } + FullscreenApi.prefixed = browserApi[0] !== specApi[0]; + } + + /** + * @file create-logger.js + * @module create-logger + */ + + // This is the private tracking variable for the logging history. + let history = []; + + /** + * Log messages to the console and history based on the type of message + * + * @private + * @param {string} name + * The name of the console method to use. + * + * @param {Object} log + * The arguments to be passed to the matching console method. + * + * @param {string} [styles] + * styles for name + */ + const LogByTypeFactory = (name, log, styles) => (type, level, args) => { + const lvl = log.levels[level]; + const lvlRegExp = new RegExp(`^(${lvl})$`); + let resultName = name; + if (type !== 'log') { + // Add the type to the front of the message when it's not "log". + args.unshift(type.toUpperCase() + ':'); + } + if (styles) { + resultName = `%c${name}`; + args.unshift(styles); + } + + // Add console prefix after adding to history. + args.unshift(resultName + ':'); + + // Add a clone of the args at this point to history. + if (history) { + history.push([].concat(args)); + + // only store 1000 history entries + const splice = history.length - 1000; + history.splice(0, splice > 0 ? splice : 0); + } + + // If there's no console then don't try to output messages, but they will + // still be stored in history. + if (!window.console) { + return; + } + + // Was setting these once outside of this function, but containing them + // in the function makes it easier to test cases where console doesn't exist + // when the module is executed. + let fn = window.console[type]; + if (!fn && type === 'debug') { + // Certain browsers don't have support for console.debug. For those, we + // should default to the closest comparable log. + fn = window.console.info || window.console.log; + } + + // Bail out if there's no console or if this type is not allowed by the + // current logging level. + if (!fn || !lvl || !lvlRegExp.test(type)) { + return; + } + fn[Array.isArray(args) ? 'apply' : 'call'](window.console, args); + }; + function createLogger$1(name, delimiter = ':', styles = '') { + // This is the private tracking variable for logging level. + let level = 'info'; + + // the curried logByType bound to the specific log and history + let logByType; + + /** + * Logs plain debug messages. Similar to `console.log`. + * + * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149) + * of our JSDoc template, we cannot properly document this as both a function + * and a namespace, so its function signature is documented here. + * + * #### Arguments + * ##### *args + * *[] + * + * Any combination of values that could be passed to `console.log()`. + * + * #### Return Value + * + * `undefined` + * + * @namespace + * @param {...*} args + * One or more messages or objects that should be logged. + */ + const log = function (...args) { + logByType('log', level, args); + }; + + // This is the logByType helper that the logging methods below use + logByType = LogByTypeFactory(name, log, styles); + + /** + * Create a new subLogger which chains the old name to the new name. + * + * For example, doing `videojs.log.createLogger('player')` and then using that logger will log the following: + * ```js + * mylogger('foo'); + * // > VIDEOJS: player: foo + * ``` + * + * @param {string} subName + * The name to add call the new logger + * @param {string} [subDelimiter] + * Optional delimiter + * @param {string} [subStyles] + * Optional styles + * @return {Object} + */ + log.createLogger = (subName, subDelimiter, subStyles) => { + const resultDelimiter = subDelimiter !== undefined ? subDelimiter : delimiter; + const resultStyles = subStyles !== undefined ? subStyles : styles; + const resultName = `${name} ${resultDelimiter} ${subName}`; + return createLogger$1(resultName, resultDelimiter, resultStyles); + }; + + /** + * Create a new logger. + * + * @param {string} newName + * The name for the new logger + * @param {string} [newDelimiter] + * Optional delimiter + * @param {string} [newStyles] + * Optional styles + * @return {Object} + */ + log.createNewLogger = (newName, newDelimiter, newStyles) => { + return createLogger$1(newName, newDelimiter, newStyles); + }; + + /** + * Enumeration of available logging levels, where the keys are the level names + * and the values are `|`-separated strings containing logging methods allowed + * in that logging level. These strings are used to create a regular expression + * matching the function name being called. + * + * Levels provided by Video.js are: + * + * - `off`: Matches no calls. Any value that can be cast to `false` will have + * this effect. The most restrictive. + * - `all`: Matches only Video.js-provided functions (`debug`, `log`, + * `log.warn`, and `log.error`). + * - `debug`: Matches `log.debug`, `log`, `log.warn`, and `log.error` calls. + * - `info` (default): Matches `log`, `log.warn`, and `log.error` calls. + * - `warn`: Matches `log.warn` and `log.error` calls. + * - `error`: Matches only `log.error` calls. + * + * @type {Object} + */ + log.levels = { + all: 'debug|log|warn|error', + off: '', + debug: 'debug|log|warn|error', + info: 'log|warn|error', + warn: 'warn|error', + error: 'error', + DEFAULT: level + }; + + /** + * Get or set the current logging level. + * + * If a string matching a key from {@link module:log.levels} is provided, acts + * as a setter. + * + * @param {'all'|'debug'|'info'|'warn'|'error'|'off'} [lvl] + * Pass a valid level to set a new logging level. + * + * @return {string} + * The current logging level. + */ + log.level = lvl => { + if (typeof lvl === 'string') { + if (!log.levels.hasOwnProperty(lvl)) { + throw new Error(`"${lvl}" in not a valid log level`); + } + level = lvl; + } + return level; + }; + + /** + * Returns an array containing everything that has been logged to the history. + * + * This array is a shallow clone of the internal history record. However, its + * contents are _not_ cloned; so, mutating objects inside this array will + * mutate them in history. + * + * @return {Array} + */ + log.history = () => history ? [].concat(history) : []; + + /** + * Allows you to filter the history by the given logger name + * + * @param {string} fname + * The name to filter by + * + * @return {Array} + * The filtered list to return + */ + log.history.filter = fname => { + return (history || []).filter(historyItem => { + // if the first item in each historyItem includes `fname`, then it's a match + return new RegExp(`.*${fname}.*`).test(historyItem[0]); + }); + }; + + /** + * Clears the internal history tracking, but does not prevent further history + * tracking. + */ + log.history.clear = () => { + if (history) { + history.length = 0; + } + }; + + /** + * Disable history tracking if it is currently enabled. + */ + log.history.disable = () => { + if (history !== null) { + history.length = 0; + history = null; + } + }; + + /** + * Enable history tracking if it is currently disabled. + */ + log.history.enable = () => { + if (history === null) { + history = []; + } + }; + + /** + * Logs error messages. Similar to `console.error`. + * + * @param {...*} args + * One or more messages or objects that should be logged as an error + */ + log.error = (...args) => logByType('error', level, args); + + /** + * Logs warning messages. Similar to `console.warn`. + * + * @param {...*} args + * One or more messages or objects that should be logged as a warning. + */ + log.warn = (...args) => logByType('warn', level, args); + + /** + * Logs debug messages. Similar to `console.debug`, but may also act as a comparable + * log if `console.debug` is not available + * + * @param {...*} args + * One or more messages or objects that should be logged as debug. + */ + log.debug = (...args) => logByType('debug', level, args); + return log; + } + + /** + * @file log.js + * @module log + */ + const log = createLogger$1('VIDEOJS'); + const createLogger = log.createLogger; + + /** + * @file obj.js + * @module obj + */ + + /** + * @callback obj:EachCallback + * + * @param {*} value + * The current key for the object that is being iterated over. + * + * @param {string} key + * The current key-value for object that is being iterated over + */ + + /** + * @callback obj:ReduceCallback + * + * @param {*} accum + * The value that is accumulating over the reduce loop. + * + * @param {*} value + * The current key for the object that is being iterated over. + * + * @param {string} key + * The current key-value for object that is being iterated over + * + * @return {*} + * The new accumulated value. + */ + const toString$1 = Object.prototype.toString; + + /** + * Get the keys of an Object + * + * @param {Object} + * The Object to get the keys from + * + * @return {string[]} + * An array of the keys from the object. Returns an empty array if the + * object passed in was invalid or had no keys. + * + * @private + */ + const keys = function (object) { + return isObject(object) ? Object.keys(object) : []; + }; + + /** + * Array-like iteration for objects. + * + * @param {Object} object + * The object to iterate over + * + * @param {obj:EachCallback} fn + * The callback function which is called for each key in the object. + */ + function each(object, fn) { + keys(object).forEach(key => fn(object[key], key)); + } + + /** + * Array-like reduce for objects. + * + * @param {Object} object + * The Object that you want to reduce. + * + * @param {Function} fn + * A callback function which is called for each key in the object. It + * receives the accumulated value and the per-iteration value and key + * as arguments. + * + * @param {*} [initial = 0] + * Starting value + * + * @return {*} + * The final accumulated value. + */ + function reduce(object, fn, initial = 0) { + return keys(object).reduce((accum, key) => fn(accum, object[key], key), initial); + } + + /** + * Returns whether a value is an object of any kind - including DOM nodes, + * arrays, regular expressions, etc. Not functions, though. + * + * This avoids the gotcha where using `typeof` on a `null` value + * results in `'object'`. + * + * @param {Object} value + * @return {boolean} + */ + function isObject(value) { + return !!value && typeof value === 'object'; + } + + /** + * Returns whether an object appears to be a "plain" object - that is, a + * direct instance of `Object`. + * + * @param {Object} value + * @return {boolean} + */ + function isPlain(value) { + return isObject(value) && toString$1.call(value) === '[object Object]' && value.constructor === Object; + } + + /** + * Merge two objects recursively. + * + * Performs a deep merge like + * {@link https://lodash.com/docs/4.17.10#merge|lodash.merge}, but only merges + * plain objects (not arrays, elements, or anything else). + * + * Non-plain object values will be copied directly from the right-most + * argument. + * + * @param {Object[]} sources + * One or more objects to merge into a new object. + * + * @return {Object} + * A new object that is the merged result of all sources. + */ + function merge(...sources) { + const result = {}; + sources.forEach(source => { + if (!source) { + return; + } + each(source, (value, key) => { + if (!isPlain(value)) { + result[key] = value; + return; + } + if (!isPlain(result[key])) { + result[key] = {}; + } + result[key] = merge(result[key], value); + }); + }); + return result; + } + + /** + * Returns an array of values for a given object + * + * @param {Object} source - target object + * @return {Array} - object values + */ + function values(source = {}) { + const result = []; + for (const key in source) { + if (source.hasOwnProperty(key)) { + const value = source[key]; + result.push(value); + } + } + return result; + } + + /** + * Object.defineProperty but "lazy", which means that the value is only set after + * it is retrieved the first time, rather than being set right away. + * + * @param {Object} obj the object to set the property on + * @param {string} key the key for the property to set + * @param {Function} getValue the function used to get the value when it is needed. + * @param {boolean} setter whether a setter should be allowed or not + */ + function defineLazyProperty(obj, key, getValue, setter = true) { + const set = value => Object.defineProperty(obj, key, { + value, + enumerable: true, + writable: true + }); + const options = { + configurable: true, + enumerable: true, + get() { + const value = getValue(); + set(value); + return value; + } + }; + if (setter) { + options.set = set; + } + return Object.defineProperty(obj, key, options); + } + + var Obj = /*#__PURE__*/Object.freeze({ + __proto__: null, + each: each, + reduce: reduce, + isObject: isObject, + isPlain: isPlain, + merge: merge, + values: values, + defineLazyProperty: defineLazyProperty + }); + + /** + * @file browser.js + * @module browser + */ + + /** + * Whether or not this device is an iPod. + * + * @static + * @type {Boolean} + */ + let IS_IPOD = false; + + /** + * The detected iOS version - or `null`. + * + * @static + * @type {string|null} + */ + let IOS_VERSION = null; + + /** + * Whether or not this is an Android device. + * + * @static + * @type {Boolean} + */ + let IS_ANDROID = false; + + /** + * The detected Android version - or `null` if not Android or indeterminable. + * + * @static + * @type {number|string|null} + */ + let ANDROID_VERSION; + + /** + * Whether or not this is Mozilla Firefox. + * + * @static + * @type {Boolean} + */ + let IS_FIREFOX = false; + + /** + * Whether or not this is Microsoft Edge. + * + * @static + * @type {Boolean} + */ + let IS_EDGE = false; + + /** + * Whether or not this is any Chromium Browser + * + * @static + * @type {Boolean} + */ + let IS_CHROMIUM = false; + + /** + * Whether or not this is any Chromium browser that is not Edge. + * + * This will also be `true` for Chrome on iOS, which will have different support + * as it is actually Safari under the hood. + * + * Deprecated, as the behaviour to not match Edge was to prevent Legacy Edge's UA matching. + * IS_CHROMIUM should be used instead. + * "Chromium but not Edge" could be explicitly tested with IS_CHROMIUM && !IS_EDGE + * + * @static + * @deprecated + * @type {Boolean} + */ + let IS_CHROME = false; + + /** + * The detected Chromium version - or `null`. + * + * @static + * @type {number|null} + */ + let CHROMIUM_VERSION = null; + + /** + * The detected Google Chrome version - or `null`. + * This has always been the _Chromium_ version, i.e. would return on Chromium Edge. + * Deprecated, use CHROMIUM_VERSION instead. + * + * @static + * @deprecated + * @type {number|null} + */ + let CHROME_VERSION = null; + + /** + * The detected Internet Explorer version - or `null`. + * + * @static + * @deprecated + * @type {number|null} + */ + let IE_VERSION = null; + + /** + * Whether or not this is desktop Safari. + * + * @static + * @type {Boolean} + */ + let IS_SAFARI = false; + + /** + * Whether or not this is a Windows machine. + * + * @static + * @type {Boolean} + */ + let IS_WINDOWS = false; + + /** + * Whether or not this device is an iPad. + * + * @static + * @type {Boolean} + */ + let IS_IPAD = false; + + /** + * Whether or not this device is an iPhone. + * + * @static + * @type {Boolean} + */ + // The Facebook app's UIWebView identifies as both an iPhone and iPad, so + // to identify iPhones, we need to exclude iPads. + // http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/ + let IS_IPHONE = false; + + /** + * Whether or not this is a Tizen device. + * + * @static + * @type {Boolean} + */ + let IS_TIZEN = false; + + /** + * Whether or not this is a WebOS device. + * + * @static + * @type {Boolean} + */ + let IS_WEBOS = false; + + /** + * Whether or not this is a Smart TV (Tizen or WebOS) device. + * + * @static + * @type {Boolean} + */ + let IS_SMART_TV = false; + + /** + * Whether or not this device is touch-enabled. + * + * @static + * @const + * @type {Boolean} + */ + const TOUCH_ENABLED = Boolean(isReal() && ('ontouchstart' in window || window.navigator.maxTouchPoints || window.DocumentTouch && window.document instanceof window.DocumentTouch)); + const UAD = window.navigator && window.navigator.userAgentData; + if (UAD && UAD.platform && UAD.brands) { + // If userAgentData is present, use it instead of userAgent to avoid warnings + // Currently only implemented on Chromium + // userAgentData does not expose Android version, so ANDROID_VERSION remains `null` + + IS_ANDROID = UAD.platform === 'Android'; + IS_EDGE = Boolean(UAD.brands.find(b => b.brand === 'Microsoft Edge')); + IS_CHROMIUM = Boolean(UAD.brands.find(b => b.brand === 'Chromium')); + IS_CHROME = !IS_EDGE && IS_CHROMIUM; + CHROMIUM_VERSION = CHROME_VERSION = (UAD.brands.find(b => b.brand === 'Chromium') || {}).version || null; + IS_WINDOWS = UAD.platform === 'Windows'; + } + + // If the browser is not Chromium, either userAgentData is not present which could be an old Chromium browser, + // or it's a browser that has added userAgentData since that we don't have tests for yet. In either case, + // the checks need to be made agiainst the regular userAgent string. + if (!IS_CHROMIUM) { + const USER_AGENT = window.navigator && window.navigator.userAgent || ''; + IS_IPOD = /iPod/i.test(USER_AGENT); + IOS_VERSION = function () { + const match = USER_AGENT.match(/OS (\d+)_/i); + if (match && match[1]) { + return match[1]; + } + return null; + }(); + IS_ANDROID = /Android/i.test(USER_AGENT); + ANDROID_VERSION = function () { + // This matches Android Major.Minor.Patch versions + // ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned + const match = USER_AGENT.match(/Android (\d+)(?:\.(\d+))?(?:\.(\d+))*/i); + if (!match) { + return null; + } + const major = match[1] && parseFloat(match[1]); + const minor = match[2] && parseFloat(match[2]); + if (major && minor) { + return parseFloat(match[1] + '.' + match[2]); + } else if (major) { + return major; + } + return null; + }(); + IS_FIREFOX = /Firefox/i.test(USER_AGENT); + IS_EDGE = /Edg/i.test(USER_AGENT); + IS_CHROMIUM = /Chrome/i.test(USER_AGENT) || /CriOS/i.test(USER_AGENT); + IS_CHROME = !IS_EDGE && IS_CHROMIUM; + CHROMIUM_VERSION = CHROME_VERSION = function () { + const match = USER_AGENT.match(/(Chrome|CriOS)\/(\d+)/); + if (match && match[2]) { + return parseFloat(match[2]); + } + return null; + }(); + IE_VERSION = function () { + const result = /MSIE\s(\d+)\.\d/.exec(USER_AGENT); + let version = result && parseFloat(result[1]); + if (!version && /Trident\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) { + // IE 11 has a different user agent string than other IE versions + version = 11.0; + } + return version; + }(); + IS_TIZEN = /Tizen/i.test(USER_AGENT); + IS_WEBOS = /Web0S/i.test(USER_AGENT); + IS_SMART_TV = IS_TIZEN || IS_WEBOS; + IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE && !IS_SMART_TV; + IS_WINDOWS = /Windows/i.test(USER_AGENT); + IS_IPAD = /iPad/i.test(USER_AGENT) || IS_SAFARI && TOUCH_ENABLED && !/iPhone/i.test(USER_AGENT); + IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD; + } + + /** + * Whether or not this is an iOS device. + * + * @static + * @const + * @type {Boolean} + */ + const IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD; + + /** + * Whether or not this is any flavor of Safari - including iOS. + * + * @static + * @const + * @type {Boolean} + */ + const IS_ANY_SAFARI = (IS_SAFARI || IS_IOS) && !IS_CHROME; + + var browser = /*#__PURE__*/Object.freeze({ + __proto__: null, + get IS_IPOD () { return IS_IPOD; }, + get IOS_VERSION () { return IOS_VERSION; }, + get IS_ANDROID () { return IS_ANDROID; }, + get ANDROID_VERSION () { return ANDROID_VERSION; }, + get IS_FIREFOX () { return IS_FIREFOX; }, + get IS_EDGE () { return IS_EDGE; }, + get IS_CHROMIUM () { return IS_CHROMIUM; }, + get IS_CHROME () { return IS_CHROME; }, + get CHROMIUM_VERSION () { return CHROMIUM_VERSION; }, + get CHROME_VERSION () { return CHROME_VERSION; }, + get IE_VERSION () { return IE_VERSION; }, + get IS_SAFARI () { return IS_SAFARI; }, + get IS_WINDOWS () { return IS_WINDOWS; }, + get IS_IPAD () { return IS_IPAD; }, + get IS_IPHONE () { return IS_IPHONE; }, + get IS_TIZEN () { return IS_TIZEN; }, + get IS_WEBOS () { return IS_WEBOS; }, + get IS_SMART_TV () { return IS_SMART_TV; }, + TOUCH_ENABLED: TOUCH_ENABLED, + IS_IOS: IS_IOS, + IS_ANY_SAFARI: IS_ANY_SAFARI + }); + + /** + * @file dom.js + * @module dom + */ + + /** + * Detect if a value is a string with any non-whitespace characters. + * + * @private + * @param {string} str + * The string to check + * + * @return {boolean} + * Will be `true` if the string is non-blank, `false` otherwise. + * + */ + function isNonBlankString(str) { + // we use str.trim as it will trim any whitespace characters + // from the front or back of non-whitespace characters. aka + // Any string that contains non-whitespace characters will + // still contain them after `trim` but whitespace only strings + // will have a length of 0, failing this check. + return typeof str === 'string' && Boolean(str.trim()); + } + + /** + * Throws an error if the passed string has whitespace. This is used by + * class methods to be relatively consistent with the classList API. + * + * @private + * @param {string} str + * The string to check for whitespace. + * + * @throws {Error} + * Throws an error if there is whitespace in the string. + */ + function throwIfWhitespace(str) { + // str.indexOf instead of regex because str.indexOf is faster performance wise. + if (str.indexOf(' ') >= 0) { + throw new Error('class has illegal whitespace characters'); + } + } + + /** + * Whether the current DOM interface appears to be real (i.e. not simulated). + * + * @return {boolean} + * Will be `true` if the DOM appears to be real, `false` otherwise. + */ + function isReal() { + // Both document and window will never be undefined thanks to `global`. + return document === window.document; + } + + /** + * Determines, via duck typing, whether or not a value is a DOM element. + * + * @param {*} value + * The value to check. + * + * @return {boolean} + * Will be `true` if the value is a DOM element, `false` otherwise. + */ + function isEl(value) { + return isObject(value) && value.nodeType === 1; + } + + /** + * Determines if the current DOM is embedded in an iframe. + * + * @return {boolean} + * Will be `true` if the DOM is embedded in an iframe, `false` + * otherwise. + */ + function isInFrame() { + // We need a try/catch here because Safari will throw errors when attempting + // to get either `parent` or `self` + try { + return window.parent !== window.self; + } catch (x) { + return true; + } + } + + /** + * Creates functions to query the DOM using a given method. + * + * @private + * @param {string} method + * The method to create the query with. + * + * @return {Function} + * The query method + */ + function createQuerier(method) { + return function (selector, context) { + if (!isNonBlankString(selector)) { + return document[method](null); + } + if (isNonBlankString(context)) { + context = document.querySelector(context); + } + const ctx = isEl(context) ? context : document; + return ctx[method] && ctx[method](selector); + }; + } + + /** + * Creates an element and applies properties, attributes, and inserts content. + * + * @param {string} [tagName='div'] + * Name of tag to be created. + * + * @param {Object} [properties={}] + * Element properties to be applied. + * + * @param {Object} [attributes={}] + * Element attributes to be applied. + * + * @param {ContentDescriptor} [content] + * A content descriptor object. + * + * @return {Element} + * The element that was created. + */ + function createEl(tagName = 'div', properties = {}, attributes = {}, content) { + const el = document.createElement(tagName); + Object.getOwnPropertyNames(properties).forEach(function (propName) { + const val = properties[propName]; + + // Handle textContent since it's not supported everywhere and we have a + // method for it. + if (propName === 'textContent') { + textContent(el, val); + } else if (el[propName] !== val || propName === 'tabIndex') { + el[propName] = val; + } + }); + Object.getOwnPropertyNames(attributes).forEach(function (attrName) { + el.setAttribute(attrName, attributes[attrName]); + }); + if (content) { + appendContent(el, content); + } + return el; + } + + /** + * Injects text into an element, replacing any existing contents entirely. + * + * @param {HTMLElement} el + * The element to add text content into + * + * @param {string} text + * The text content to add. + * + * @return {Element} + * The element with added text content. + */ + function textContent(el, text) { + if (typeof el.textContent === 'undefined') { + el.innerText = text; + } else { + el.textContent = text; + } + return el; + } + + /** + * Insert an element as the first child node of another + * + * @param {Element} child + * Element to insert + * + * @param {Element} parent + * Element to insert child into + */ + function prependTo(child, parent) { + if (parent.firstChild) { + parent.insertBefore(child, parent.firstChild); + } else { + parent.appendChild(child); + } + } + + /** + * Check if an element has a class name. + * + * @param {Element} element + * Element to check + * + * @param {string} classToCheck + * Class name to check for + * + * @return {boolean} + * Will be `true` if the element has a class, `false` otherwise. + * + * @throws {Error} + * Throws an error if `classToCheck` has white space. + */ + function hasClass(element, classToCheck) { + throwIfWhitespace(classToCheck); + return element.classList.contains(classToCheck); + } + + /** + * Add a class name to an element. + * + * @param {Element} element + * Element to add class name to. + * + * @param {...string} classesToAdd + * One or more class name to add. + * + * @return {Element} + * The DOM element with the added class name. + */ + function addClass(element, ...classesToAdd) { + element.classList.add(...classesToAdd.reduce((prev, current) => prev.concat(current.split(/\s+/)), [])); + return element; + } + + /** + * Remove a class name from an element. + * + * @param {Element} element + * Element to remove a class name from. + * + * @param {...string} classesToRemove + * One or more class name to remove. + * + * @return {Element} + * The DOM element with class name removed. + */ + function removeClass(element, ...classesToRemove) { + // Protect in case the player gets disposed + if (!element) { + log.warn("removeClass was called with an element that doesn't exist"); + return null; + } + element.classList.remove(...classesToRemove.reduce((prev, current) => prev.concat(current.split(/\s+/)), [])); + return element; + } + + /** + * The callback definition for toggleClass. + * + * @callback module:dom~PredicateCallback + * @param {Element} element + * The DOM element of the Component. + * + * @param {string} classToToggle + * The `className` that wants to be toggled + * + * @return {boolean|undefined} + * If `true` is returned, the `classToToggle` will be added to the + * `element`. If `false`, the `classToToggle` will be removed from + * the `element`. If `undefined`, the callback will be ignored. + */ + + /** + * Adds or removes a class name to/from an element depending on an optional + * condition or the presence/absence of the class name. + * + * @param {Element} element + * The element to toggle a class name on. + * + * @param {string} classToToggle + * The class that should be toggled. + * + * @param {boolean|module:dom~PredicateCallback} [predicate] + * See the return value for {@link module:dom~PredicateCallback} + * + * @return {Element} + * The element with a class that has been toggled. + */ + function toggleClass(element, classToToggle, predicate) { + if (typeof predicate === 'function') { + predicate = predicate(element, classToToggle); + } + if (typeof predicate !== 'boolean') { + predicate = undefined; + } + classToToggle.split(/\s+/).forEach(className => element.classList.toggle(className, predicate)); + return element; + } + + /** + * Apply attributes to an HTML element. + * + * @param {Element} el + * Element to add attributes to. + * + * @param {Object} [attributes] + * Attributes to be applied. + */ + function setAttributes(el, attributes) { + Object.getOwnPropertyNames(attributes).forEach(function (attrName) { + const attrValue = attributes[attrName]; + if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) { + el.removeAttribute(attrName); + } else { + el.setAttribute(attrName, attrValue === true ? '' : attrValue); + } + }); + } + + /** + * Get an element's attribute values, as defined on the HTML tag. + * + * Attributes are not the same as properties. They're defined on the tag + * or with setAttribute. + * + * @param {Element} tag + * Element from which to get tag attributes. + * + * @return {Object} + * All attributes of the element. Boolean attributes will be `true` or + * `false`, others will be strings. + */ + function getAttributes(tag) { + const obj = {}; + + // known boolean attributes + // we can check for matching boolean properties, but not all browsers + // and not all tags know about these attributes, so, we still want to check them manually + const knownBooleans = ['autoplay', 'controls', 'playsinline', 'loop', 'muted', 'default', 'defaultMuted']; + if (tag && tag.attributes && tag.attributes.length > 0) { + const attrs = tag.attributes; + for (let i = attrs.length - 1; i >= 0; i--) { + const attrName = attrs[i].name; + /** @type {boolean|string} */ + let attrVal = attrs[i].value; + + // check for known booleans + // the matching element property will return a value for typeof + if (knownBooleans.includes(attrName)) { + // the value of an included boolean attribute is typically an empty + // string ('') which would equal false if we just check for a false value. + // we also don't want support bad code like autoplay='false' + attrVal = attrVal !== null ? true : false; + } + obj[attrName] = attrVal; + } + } + return obj; + } + + /** + * Get the value of an element's attribute. + * + * @param {Element} el + * A DOM element. + * + * @param {string} attribute + * Attribute to get the value of. + * + * @return {string} + * The value of the attribute. + */ + function getAttribute(el, attribute) { + return el.getAttribute(attribute); + } + + /** + * Set the value of an element's attribute. + * + * @param {Element} el + * A DOM element. + * + * @param {string} attribute + * Attribute to set. + * + * @param {string} value + * Value to set the attribute to. + */ + function setAttribute(el, attribute, value) { + el.setAttribute(attribute, value); + } + + /** + * Remove an element's attribute. + * + * @param {Element} el + * A DOM element. + * + * @param {string} attribute + * Attribute to remove. + */ + function removeAttribute(el, attribute) { + el.removeAttribute(attribute); + } + + /** + * Attempt to block the ability to select text. + */ + function blockTextSelection() { + document.body.focus(); + document.onselectstart = function () { + return false; + }; + } + + /** + * Turn off text selection blocking. + */ + function unblockTextSelection() { + document.onselectstart = function () { + return true; + }; + } + + /** + * Identical to the native `getBoundingClientRect` function, but ensures that + * the method is supported at all (it is in all browsers we claim to support) + * and that the element is in the DOM before continuing. + * + * This wrapper function also shims properties which are not provided by some + * older browsers (namely, IE8). + * + * Additionally, some browsers do not support adding properties to a + * `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard + * properties (except `x` and `y` which are not widely supported). This helps + * avoid implementations where keys are non-enumerable. + * + * @param {Element} el + * Element whose `ClientRect` we want to calculate. + * + * @return {Object|undefined} + * Always returns a plain object - or `undefined` if it cannot. + */ + function getBoundingClientRect(el) { + if (el && el.getBoundingClientRect && el.parentNode) { + const rect = el.getBoundingClientRect(); + const result = {}; + ['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(k => { + if (rect[k] !== undefined) { + result[k] = rect[k]; + } + }); + if (!result.height) { + result.height = parseFloat(computedStyle(el, 'height')); + } + if (!result.width) { + result.width = parseFloat(computedStyle(el, 'width')); + } + return result; + } + } + + /** + * Represents the position of a DOM element on the page. + * + * @typedef {Object} module:dom~Position + * + * @property {number} left + * Pixels to the left. + * + * @property {number} top + * Pixels from the top. + */ + + /** + * Get the position of an element in the DOM. + * + * Uses `getBoundingClientRect` technique from John Resig. + * + * @see http://ejohn.org/blog/getboundingclientrect-is-awesome/ + * + * @param {Element} el + * Element from which to get offset. + * + * @return {module:dom~Position} + * The position of the element that was passed in. + */ + function findPosition(el) { + if (!el || el && !el.offsetParent) { + return { + left: 0, + top: 0, + width: 0, + height: 0 + }; + } + const width = el.offsetWidth; + const height = el.offsetHeight; + let left = 0; + let top = 0; + while (el.offsetParent && el !== document[FullscreenApi.fullscreenElement]) { + left += el.offsetLeft; + top += el.offsetTop; + el = el.offsetParent; + } + return { + left, + top, + width, + height + }; + } + + /** + * Represents x and y coordinates for a DOM element or mouse pointer. + * + * @typedef {Object} module:dom~Coordinates + * + * @property {number} x + * x coordinate in pixels + * + * @property {number} y + * y coordinate in pixels + */ + + /** + * Get the pointer position within an element. + * + * The base on the coordinates are the bottom left of the element. + * + * @param {Element} el + * Element on which to get the pointer position on. + * + * @param {Event} event + * Event object. + * + * @return {module:dom~Coordinates} + * A coordinates object corresponding to the mouse position. + * + */ + function getPointerPosition(el, event) { + const translated = { + x: 0, + y: 0 + }; + if (IS_IOS) { + let item = el; + while (item && item.nodeName.toLowerCase() !== 'html') { + const transform = computedStyle(item, 'transform'); + if (/^matrix/.test(transform)) { + const values = transform.slice(7, -1).split(/,\s/).map(Number); + translated.x += values[4]; + translated.y += values[5]; + } else if (/^matrix3d/.test(transform)) { + const values = transform.slice(9, -1).split(/,\s/).map(Number); + translated.x += values[12]; + translated.y += values[13]; + } + item = item.parentNode; + } + } + const position = {}; + const boxTarget = findPosition(event.target); + const box = findPosition(el); + const boxW = box.width; + const boxH = box.height; + let offsetY = event.offsetY - (box.top - boxTarget.top); + let offsetX = event.offsetX - (box.left - boxTarget.left); + if (event.changedTouches) { + offsetX = event.changedTouches[0].pageX - box.left; + offsetY = event.changedTouches[0].pageY + box.top; + if (IS_IOS) { + offsetX -= translated.x; + offsetY -= translated.y; + } + } + position.y = 1 - Math.max(0, Math.min(1, offsetY / boxH)); + position.x = Math.max(0, Math.min(1, offsetX / boxW)); + return position; + } + + /** + * Determines, via duck typing, whether or not a value is a text node. + * + * @param {*} value + * Check if this value is a text node. + * + * @return {boolean} + * Will be `true` if the value is a text node, `false` otherwise. + */ + function isTextNode(value) { + return isObject(value) && value.nodeType === 3; + } + + /** + * Empties the contents of an element. + * + * @param {Element} el + * The element to empty children from + * + * @return {Element} + * The element with no children + */ + function emptyEl(el) { + while (el.firstChild) { + el.removeChild(el.firstChild); + } + return el; + } + + /** + * This is a mixed value that describes content to be injected into the DOM + * via some method. It can be of the following types: + * + * Type | Description + * -----------|------------- + * `string` | The value will be normalized into a text node. + * `Element` | The value will be accepted as-is. + * `Text` | A TextNode. The value will be accepted as-is. + * `Array` | A one-dimensional array of strings, elements, text nodes, or functions. These functions should return a string, element, or text node (any other return value, like an array, will be ignored). + * `Function` | A function, which is expected to return a string, element, text node, or array - any of the other possible values described above. This means that a content descriptor could be a function that returns an array of functions, but those second-level functions must return strings, elements, or text nodes. + * + * @typedef {string|Element|Text|Array|Function} ContentDescriptor + */ + + /** + * Normalizes content for eventual insertion into the DOM. + * + * This allows a wide range of content definition methods, but helps protect + * from falling into the trap of simply writing to `innerHTML`, which could + * be an XSS concern. + * + * The content for an element can be passed in multiple types and + * combinations, whose behavior is as follows: + * + * @param {ContentDescriptor} content + * A content descriptor value. + * + * @return {Array} + * All of the content that was passed in, normalized to an array of + * elements or text nodes. + */ + function normalizeContent(content) { + // First, invoke content if it is a function. If it produces an array, + // that needs to happen before normalization. + if (typeof content === 'function') { + content = content(); + } + + // Next up, normalize to an array, so one or many items can be normalized, + // filtered, and returned. + return (Array.isArray(content) ? content : [content]).map(value => { + // First, invoke value if it is a function to produce a new value, + // which will be subsequently normalized to a Node of some kind. + if (typeof value === 'function') { + value = value(); + } + if (isEl(value) || isTextNode(value)) { + return value; + } + if (typeof value === 'string' && /\S/.test(value)) { + return document.createTextNode(value); + } + }).filter(value => value); + } + + /** + * Normalizes and appends content to an element. + * + * @param {Element} el + * Element to append normalized content to. + * + * @param {ContentDescriptor} content + * A content descriptor value. + * + * @return {Element} + * The element with appended normalized content. + */ + function appendContent(el, content) { + normalizeContent(content).forEach(node => el.appendChild(node)); + return el; + } + + /** + * Normalizes and inserts content into an element; this is identical to + * `appendContent()`, except it empties the element first. + * + * @param {Element} el + * Element to insert normalized content into. + * + * @param {ContentDescriptor} content + * A content descriptor value. + * + * @return {Element} + * The element with inserted normalized content. + */ + function insertContent(el, content) { + return appendContent(emptyEl(el), content); + } + + /** + * Check if an event was a single left click. + * + * @param {MouseEvent} event + * Event object. + * + * @return {boolean} + * Will be `true` if a single left click, `false` otherwise. + */ + function isSingleLeftClick(event) { + // Note: if you create something draggable, be sure to + // call it on both `mousedown` and `mousemove` event, + // otherwise `mousedown` should be enough for a button + + if (event.button === undefined && event.buttons === undefined) { + // Why do we need `buttons` ? + // Because, middle mouse sometimes have this: + // e.button === 0 and e.buttons === 4 + // Furthermore, we want to prevent combination click, something like + // HOLD middlemouse then left click, that would be + // e.button === 0, e.buttons === 5 + // just `button` is not gonna work + + // Alright, then what this block does ? + // this is for chrome `simulate mobile devices` + // I want to support this as well + + return true; + } + if (event.button === 0 && event.buttons === undefined) { + // Touch screen, sometimes on some specific device, `buttons` + // doesn't have anything (safari on ios, blackberry...) + + return true; + } + + // `mouseup` event on a single left click has + // `button` and `buttons` equal to 0 + if (event.type === 'mouseup' && event.button === 0 && event.buttons === 0) { + return true; + } + if (event.button !== 0 || event.buttons !== 1) { + // This is the reason we have those if else block above + // if any special case we can catch and let it slide + // we do it above, when get to here, this definitely + // is-not-left-click + + return false; + } + return true; + } + + /** + * Finds a single DOM element matching `selector` within the optional + * `context` of another DOM element (defaulting to `document`). + * + * @param {string} selector + * A valid CSS selector, which will be passed to `querySelector`. + * + * @param {Element|String} [context=document] + * A DOM element within which to query. Can also be a selector + * string in which case the first matching element will be used + * as context. If missing (or no element matches selector), falls + * back to `document`. + * + * @return {Element|null} + * The element that was found or null. + */ + const $ = createQuerier('querySelector'); + + /** + * Finds a all DOM elements matching `selector` within the optional + * `context` of another DOM element (defaulting to `document`). + * + * @param {string} selector + * A valid CSS selector, which will be passed to `querySelectorAll`. + * + * @param {Element|String} [context=document] + * A DOM element within which to query. Can also be a selector + * string in which case the first matching element will be used + * as context. If missing (or no element matches selector), falls + * back to `document`. + * + * @return {NodeList} + * A element list of elements that were found. Will be empty if none + * were found. + * + */ + const $$ = createQuerier('querySelectorAll'); + + /** + * A safe getComputedStyle. + * + * This is needed because in Firefox, if the player is loaded in an iframe with + * `display:none`, then `getComputedStyle` returns `null`, so, we do a + * null-check to make sure that the player doesn't break in these cases. + * + * @param {Element} el + * The element you want the computed style of + * + * @param {string} prop + * The property name you want + * + * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397 + */ + function computedStyle(el, prop) { + if (!el || !prop) { + return ''; + } + if (typeof window.getComputedStyle === 'function') { + let computedStyleValue; + try { + computedStyleValue = window.getComputedStyle(el); + } catch (e) { + return ''; + } + return computedStyleValue ? computedStyleValue.getPropertyValue(prop) || computedStyleValue[prop] : ''; + } + return ''; + } + + /** + * Copy document style sheets to another window. + * + * @param {Window} win + * The window element you want to copy the document style sheets to. + * + */ + function copyStyleSheetsToWindow(win) { + [...document.styleSheets].forEach(styleSheet => { + try { + const cssRules = [...styleSheet.cssRules].map(rule => rule.cssText).join(''); + const style = document.createElement('style'); + style.textContent = cssRules; + win.document.head.appendChild(style); + } catch (e) { + const link = document.createElement('link'); + link.rel = 'stylesheet'; + link.type = styleSheet.type; + // For older Safari this has to be the string; on other browsers setting the MediaList works + link.media = styleSheet.media.mediaText; + link.href = styleSheet.href; + win.document.head.appendChild(link); + } + }); + } + + var Dom = /*#__PURE__*/Object.freeze({ + __proto__: null, + isReal: isReal, + isEl: isEl, + isInFrame: isInFrame, + createEl: createEl, + textContent: textContent, + prependTo: prependTo, + hasClass: hasClass, + addClass: addClass, + removeClass: removeClass, + toggleClass: toggleClass, + setAttributes: setAttributes, + getAttributes: getAttributes, + getAttribute: getAttribute, + setAttribute: setAttribute, + removeAttribute: removeAttribute, + blockTextSelection: blockTextSelection, + unblockTextSelection: unblockTextSelection, + getBoundingClientRect: getBoundingClientRect, + findPosition: findPosition, + getPointerPosition: getPointerPosition, + isTextNode: isTextNode, + emptyEl: emptyEl, + normalizeContent: normalizeContent, + appendContent: appendContent, + insertContent: insertContent, + isSingleLeftClick: isSingleLeftClick, + $: $, + $$: $$, + computedStyle: computedStyle, + copyStyleSheetsToWindow: copyStyleSheetsToWindow + }); + + /** + * @file setup.js - Functions for setting up a player without + * user interaction based on the data-setup `attribute` of the video tag. + * + * @module setup + */ + let _windowLoaded = false; + let videojs$1; + + /** + * Set up any tags that have a data-setup `attribute` when the player is started. + */ + const autoSetup = function () { + if (videojs$1.options.autoSetup === false) { + return; + } + const vids = Array.prototype.slice.call(document.getElementsByTagName('video')); + const audios = Array.prototype.slice.call(document.getElementsByTagName('audio')); + const divs = Array.prototype.slice.call(document.getElementsByTagName('video-js')); + const mediaEls = vids.concat(audios, divs); + + // Check if any media elements exist + if (mediaEls && mediaEls.length > 0) { + for (let i = 0, e = mediaEls.length; i < e; i++) { + const mediaEl = mediaEls[i]; + + // Check if element exists, has getAttribute func. + if (mediaEl && mediaEl.getAttribute) { + // Make sure this player hasn't already been set up. + if (mediaEl.player === undefined) { + const options = mediaEl.getAttribute('data-setup'); + + // Check if data-setup attr exists. + // We only auto-setup if they've added the data-setup attr. + if (options !== null) { + // Create new video.js instance. + videojs$1(mediaEl); + } + } + + // If getAttribute isn't defined, we need to wait for the DOM. + } else { + autoSetupTimeout(1); + break; + } + } + + // No videos were found, so keep looping unless page is finished loading. + } else if (!_windowLoaded) { + autoSetupTimeout(1); + } + }; + + /** + * Wait until the page is loaded before running autoSetup. This will be called in + * autoSetup if `hasLoaded` returns false. + * + * @param {number} wait + * How long to wait in ms + * + * @param {module:videojs} [vjs] + * The videojs library function + */ + function autoSetupTimeout(wait, vjs) { + // Protect against breakage in non-browser environments + if (!isReal()) { + return; + } + if (vjs) { + videojs$1 = vjs; + } + window.setTimeout(autoSetup, wait); + } + + /** + * Used to set the internal tracking of window loaded state to true. + * + * @private + */ + function setWindowLoaded() { + _windowLoaded = true; + window.removeEventListener('load', setWindowLoaded); + } + if (isReal()) { + if (document.readyState === 'complete') { + setWindowLoaded(); + } else { + /** + * Listen for the load event on window, and set _windowLoaded to true. + * + * We use a standard event listener here to avoid incrementing the GUID + * before any players are created. + * + * @listens load + */ + window.addEventListener('load', setWindowLoaded); + } + } + + /** + * @file stylesheet.js + * @module stylesheet + */ + + /** + * Create a DOM style element given a className for it. + * + * @param {string} className + * The className to add to the created style element. + * + * @return {Element} + * The element that was created. + */ + const createStyleElement = function (className) { + const style = document.createElement('style'); + style.className = className; + return style; + }; + + /** + * Add text to a DOM element. + * + * @param {Element} el + * The Element to add text content to. + * + * @param {string} content + * The text to add to the element. + */ + const setTextContent = function (el, content) { + if (el.styleSheet) { + el.styleSheet.cssText = content; + } else { + el.textContent = content; + } + }; + + /** + * @file dom-data.js + * @module dom-data + */ + + /** + * Element Data Store. + * + * Allows for binding data to an element without putting it directly on the + * element. Ex. Event listeners are stored here. + * (also from jsninja.com, slightly modified and updated for closure compiler) + * + * @type {Object} + * @private + */ + var DomData = new WeakMap(); + + /** + * @file guid.js + * @module guid + */ + + // Default value for GUIDs. This allows us to reset the GUID counter in tests. + // + // The initial GUID is 3 because some users have come to rely on the first + // default player ID ending up as `vjs_video_3`. + // + // See: https://github.com/videojs/video.js/pull/6216 + const _initialGuid = 3; + + /** + * Unique ID for an element or function + * + * @type {Number} + */ + let _guid = _initialGuid; + + /** + * Get a unique auto-incrementing ID by number that has not been returned before. + * + * @return {number} + * A new unique ID. + */ + function newGUID() { + return _guid++; + } + + /** + * @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/) + * (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible) + * This should work very similarly to jQuery's events, however it's based off the book version which isn't as + * robust as jquery's, so there's probably some differences. + * + * @file events.js + * @module events + */ + + /** + * Clean up the listener cache and dispatchers + * + * @param {Element|Object} elem + * Element to clean up + * + * @param {string} type + * Type of event to clean up + */ + function _cleanUpEvents(elem, type) { + if (!DomData.has(elem)) { + return; + } + const data = DomData.get(elem); + + // Remove the events of a particular type if there are none left + if (data.handlers[type].length === 0) { + delete data.handlers[type]; + // data.handlers[type] = null; + // Setting to null was causing an error with data.handlers + + // Remove the meta-handler from the element + if (elem.removeEventListener) { + elem.removeEventListener(type, data.dispatcher, false); + } else if (elem.detachEvent) { + elem.detachEvent('on' + type, data.dispatcher); + } + } + + // Remove the events object if there are no types left + if (Object.getOwnPropertyNames(data.handlers).length <= 0) { + delete data.handlers; + delete data.dispatcher; + delete data.disabled; + } + + // Finally remove the element data if there is no data left + if (Object.getOwnPropertyNames(data).length === 0) { + DomData.delete(elem); + } + } + + /** + * Loops through an array of event types and calls the requested method for each type. + * + * @param {Function} fn + * The event method we want to use. + * + * @param {Element|Object} elem + * Element or object to bind listeners to + * + * @param {string[]} types + * Type of event to bind to. + * + * @param {Function} callback + * Event listener. + */ + function _handleMultipleEvents(fn, elem, types, callback) { + types.forEach(function (type) { + // Call the event method for each one of the types + fn(elem, type, callback); + }); + } + + /** + * Fix a native event to have standard property values + * + * @param {Object} event + * Event object to fix. + * + * @return {Object} + * Fixed event object. + */ + function fixEvent(event) { + if (event.fixed_) { + return event; + } + function returnTrue() { + return true; + } + function returnFalse() { + return false; + } + + // Test if fixing up is needed + // Used to check if !event.stopPropagation instead of isPropagationStopped + // But native events return true for stopPropagation, but don't have + // other expected methods like isPropagationStopped. Seems to be a problem + // with the Javascript Ninja code. So we're just overriding all events now. + if (!event || !event.isPropagationStopped || !event.isImmediatePropagationStopped) { + const old = event || window.event; + event = {}; + // Clone the old object so that we can modify the values event = {}; + // IE8 Doesn't like when you mess with native event properties + // Firefox returns false for event.hasOwnProperty('type') and other props + // which makes copying more difficult. + // TODO: Probably best to create a whitelist of event props + for (const key in old) { + // Safari 6.0.3 warns you if you try to copy deprecated layerX/Y + // Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation + // and webkitMovementX/Y + // Lighthouse complains if Event.path is copied + if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' && key !== 'webkitMovementX' && key !== 'webkitMovementY' && key !== 'path') { + // Chrome 32+ warns if you try to copy deprecated returnValue, but + // we still want to if preventDefault isn't supported (IE8). + if (!(key === 'returnValue' && old.preventDefault)) { + event[key] = old[key]; + } + } + } + + // The event occurred on this element + if (!event.target) { + event.target = event.srcElement || document; + } + + // Handle which other element the event is related to + if (!event.relatedTarget) { + event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement; + } + + // Stop the default browser action + event.preventDefault = function () { + if (old.preventDefault) { + old.preventDefault(); + } + event.returnValue = false; + old.returnValue = false; + event.defaultPrevented = true; + }; + event.defaultPrevented = false; + + // Stop the event from bubbling + event.stopPropagation = function () { + if (old.stopPropagation) { + old.stopPropagation(); + } + event.cancelBubble = true; + old.cancelBubble = true; + event.isPropagationStopped = returnTrue; + }; + event.isPropagationStopped = returnFalse; + + // Stop the event from bubbling and executing other handlers + event.stopImmediatePropagation = function () { + if (old.stopImmediatePropagation) { + old.stopImmediatePropagation(); + } + event.isImmediatePropagationStopped = returnTrue; + event.stopPropagation(); + }; + event.isImmediatePropagationStopped = returnFalse; + + // Handle mouse position + if (event.clientX !== null && event.clientX !== undefined) { + const doc = document.documentElement; + const body = document.body; + event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0); + event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0); + } + + // Handle key presses + event.which = event.charCode || event.keyCode; + + // Fix button for mouse clicks: + // 0 == left; 1 == middle; 2 == right + if (event.button !== null && event.button !== undefined) { + // The following is disabled because it does not pass videojs-standard + // and... yikes. + /* eslint-disable */ + event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0; + /* eslint-enable */ + } + } + + event.fixed_ = true; + // Returns fixed-up instance + return event; + } + + /** + * Whether passive event listeners are supported + */ + let _supportsPassive; + const supportsPassive = function () { + if (typeof _supportsPassive !== 'boolean') { + _supportsPassive = false; + try { + const opts = Object.defineProperty({}, 'passive', { + get() { + _supportsPassive = true; + } + }); + window.addEventListener('test', null, opts); + window.removeEventListener('test', null, opts); + } catch (e) { + // disregard + } + } + return _supportsPassive; + }; + + /** + * Touch events Chrome expects to be passive + */ + const passiveEvents = ['touchstart', 'touchmove']; + + /** + * Add an event listener to element + * It stores the handler function in a separate cache object + * and adds a generic handler to the element's event, + * along with a unique id (guid) to the element. + * + * @param {Element|Object} elem + * Element or object to bind listeners to + * + * @param {string|string[]} type + * Type of event to bind to. + * + * @param {Function} fn + * Event listener. + */ + function on(elem, type, fn) { + if (Array.isArray(type)) { + return _handleMultipleEvents(on, elem, type, fn); + } + if (!DomData.has(elem)) { + DomData.set(elem, {}); + } + const data = DomData.get(elem); + + // We need a place to store all our handler data + if (!data.handlers) { + data.handlers = {}; + } + if (!data.handlers[type]) { + data.handlers[type] = []; + } + if (!fn.guid) { + fn.guid = newGUID(); + } + data.handlers[type].push(fn); + if (!data.dispatcher) { + data.disabled = false; + data.dispatcher = function (event, hash) { + if (data.disabled) { + return; + } + event = fixEvent(event); + const handlers = data.handlers[event.type]; + if (handlers) { + // Copy handlers so if handlers are added/removed during the process it doesn't throw everything off. + const handlersCopy = handlers.slice(0); + for (let m = 0, n = handlersCopy.length; m < n; m++) { + if (event.isImmediatePropagationStopped()) { + break; + } else { + try { + handlersCopy[m].call(elem, event, hash); + } catch (e) { + log.error(e); + } + } + } + } + }; + } + if (data.handlers[type].length === 1) { + if (elem.addEventListener) { + let options = false; + if (supportsPassive() && passiveEvents.indexOf(type) > -1) { + options = { + passive: true + }; + } + elem.addEventListener(type, data.dispatcher, options); + } else if (elem.attachEvent) { + elem.attachEvent('on' + type, data.dispatcher); + } + } + } + + /** + * Removes event listeners from an element + * + * @param {Element|Object} elem + * Object to remove listeners from. + * + * @param {string|string[]} [type] + * Type of listener to remove. Don't include to remove all events from element. + * + * @param {Function} [fn] + * Specific listener to remove. Don't include to remove listeners for an event + * type. + */ + function off(elem, type, fn) { + // Don't want to add a cache object through getElData if not needed + if (!DomData.has(elem)) { + return; + } + const data = DomData.get(elem); + + // If no events exist, nothing to unbind + if (!data.handlers) { + return; + } + if (Array.isArray(type)) { + return _handleMultipleEvents(off, elem, type, fn); + } + + // Utility function + const removeType = function (el, t) { + data.handlers[t] = []; + _cleanUpEvents(el, t); + }; + + // Are we removing all bound events? + if (type === undefined) { + for (const t in data.handlers) { + if (Object.prototype.hasOwnProperty.call(data.handlers || {}, t)) { + removeType(elem, t); + } + } + return; + } + const handlers = data.handlers[type]; + + // If no handlers exist, nothing to unbind + if (!handlers) { + return; + } + + // If no listener was provided, remove all listeners for type + if (!fn) { + removeType(elem, type); + return; + } + + // We're only removing a single handler + if (fn.guid) { + for (let n = 0; n < handlers.length; n++) { + if (handlers[n].guid === fn.guid) { + handlers.splice(n--, 1); + } + } + } + _cleanUpEvents(elem, type); + } + + /** + * Trigger an event for an element + * + * @param {Element|Object} elem + * Element to trigger an event on + * + * @param {EventTarget~Event|string} event + * A string (the type) or an event object with a type attribute + * + * @param {Object} [hash] + * data hash to pass along with the event + * + * @return {boolean|undefined} + * Returns the opposite of `defaultPrevented` if default was + * prevented. Otherwise, returns `undefined` + */ + function trigger(elem, event, hash) { + // Fetches element data and a reference to the parent (for bubbling). + // Don't want to add a data object to cache for every parent, + // so checking hasElData first. + const elemData = DomData.has(elem) ? DomData.get(elem) : {}; + const parent = elem.parentNode || elem.ownerDocument; + // type = event.type || event, + // handler; + + // If an event name was passed as a string, creates an event out of it + if (typeof event === 'string') { + event = { + type: event, + target: elem + }; + } else if (!event.target) { + event.target = elem; + } + + // Normalizes the event properties. + event = fixEvent(event); + + // If the passed element has a dispatcher, executes the established handlers. + if (elemData.dispatcher) { + elemData.dispatcher.call(elem, event, hash); + } + + // Unless explicitly stopped or the event does not bubble (e.g. media events) + // recursively calls this function to bubble the event up the DOM. + if (parent && !event.isPropagationStopped() && event.bubbles === true) { + trigger.call(null, parent, event, hash); + + // If at the top of the DOM, triggers the default action unless disabled. + } else if (!parent && !event.defaultPrevented && event.target && event.target[event.type]) { + if (!DomData.has(event.target)) { + DomData.set(event.target, {}); + } + const targetData = DomData.get(event.target); + + // Checks if the target has a default action for this event. + if (event.target[event.type]) { + // Temporarily disables event dispatching on the target as we have already executed the handler. + targetData.disabled = true; + // Executes the default action. + if (typeof event.target[event.type] === 'function') { + event.target[event.type](); + } + // Re-enables event dispatching. + targetData.disabled = false; + } + } + + // Inform the triggerer if the default was prevented by returning false + return !event.defaultPrevented; + } + + /** + * Trigger a listener only once for an event. + * + * @param {Element|Object} elem + * Element or object to bind to. + * + * @param {string|string[]} type + * Name/type of event + * + * @param {Event~EventListener} fn + * Event listener function + */ + function one(elem, type, fn) { + if (Array.isArray(type)) { + return _handleMultipleEvents(one, elem, type, fn); + } + const func = function () { + off(elem, type, func); + fn.apply(this, arguments); + }; + + // copy the guid to the new function so it can removed using the original function's ID + func.guid = fn.guid = fn.guid || newGUID(); + on(elem, type, func); + } + + /** + * Trigger a listener only once and then turn if off for all + * configured events + * + * @param {Element|Object} elem + * Element or object to bind to. + * + * @param {string|string[]} type + * Name/type of event + * + * @param {Event~EventListener} fn + * Event listener function + */ + function any(elem, type, fn) { + const func = function () { + off(elem, type, func); + fn.apply(this, arguments); + }; + + // copy the guid to the new function so it can removed using the original function's ID + func.guid = fn.guid = fn.guid || newGUID(); + + // multiple ons, but one off for everything + on(elem, type, func); + } + + var Events = /*#__PURE__*/Object.freeze({ + __proto__: null, + fixEvent: fixEvent, + on: on, + off: off, + trigger: trigger, + one: one, + any: any + }); + + /** + * @file fn.js + * @module fn + */ + const UPDATE_REFRESH_INTERVAL = 30; + + /** + * A private, internal-only function for changing the context of a function. + * + * It also stores a unique id on the function so it can be easily removed from + * events. + * + * @private + * @function + * @param {*} context + * The object to bind as scope. + * + * @param {Function} fn + * The function to be bound to a scope. + * + * @param {number} [uid] + * An optional unique ID for the function to be set + * + * @return {Function} + * The new function that will be bound into the context given + */ + const bind_ = function (context, fn, uid) { + // Make sure the function has a unique ID + if (!fn.guid) { + fn.guid = newGUID(); + } + + // Create the new function that changes the context + const bound = fn.bind(context); + + // Allow for the ability to individualize this function + // Needed in the case where multiple objects might share the same prototype + // IF both items add an event listener with the same function, then you try to remove just one + // it will remove both because they both have the same guid. + // when using this, you need to use the bind method when you remove the listener as well. + // currently used in text tracks + bound.guid = uid ? uid + '_' + fn.guid : fn.guid; + return bound; + }; + + /** + * Wraps the given function, `fn`, with a new function that only invokes `fn` + * at most once per every `wait` milliseconds. + * + * @function + * @param {Function} fn + * The function to be throttled. + * + * @param {number} wait + * The number of milliseconds by which to throttle. + * + * @return {Function} + */ + const throttle = function (fn, wait) { + let last = window.performance.now(); + const throttled = function (...args) { + const now = window.performance.now(); + if (now - last >= wait) { + fn(...args); + last = now; + } + }; + return throttled; + }; + + /** + * Creates a debounced function that delays invoking `func` until after `wait` + * milliseconds have elapsed since the last time the debounced function was + * invoked. + * + * Inspired by lodash and underscore implementations. + * + * @function + * @param {Function} func + * The function to wrap with debounce behavior. + * + * @param {number} wait + * The number of milliseconds to wait after the last invocation. + * + * @param {boolean} [immediate] + * Whether or not to invoke the function immediately upon creation. + * + * @param {Object} [context=window] + * The "context" in which the debounced function should debounce. For + * example, if this function should be tied to a Video.js player, + * the player can be passed here. Alternatively, defaults to the + * global `window` object. + * + * @return {Function} + * A debounced function. + */ + const debounce = function (func, wait, immediate, context = window) { + let timeout; + const cancel = () => { + context.clearTimeout(timeout); + timeout = null; + }; + + /* eslint-disable consistent-this */ + const debounced = function () { + const self = this; + const args = arguments; + let later = function () { + timeout = null; + later = null; + if (!immediate) { + func.apply(self, args); + } + }; + if (!timeout && immediate) { + func.apply(self, args); + } + context.clearTimeout(timeout); + timeout = context.setTimeout(later, wait); + }; + /* eslint-enable consistent-this */ + + debounced.cancel = cancel; + return debounced; + }; + + var Fn = /*#__PURE__*/Object.freeze({ + __proto__: null, + UPDATE_REFRESH_INTERVAL: UPDATE_REFRESH_INTERVAL, + bind_: bind_, + throttle: throttle, + debounce: debounce + }); + + /** + * @file src/js/event-target.js + */ + let EVENT_MAP; + + /** + * `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It + * adds shorthand functions that wrap around lengthy functions. For example: + * the `on` function is a wrapper around `addEventListener`. + * + * @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget} + * @class EventTarget + */ + class EventTarget { + /** + * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a + * function that will get called when an event with a certain name gets triggered. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {Function} fn + * The function to call with `EventTarget`s + */ + on(type, fn) { + // Remove the addEventListener alias before calling Events.on + // so we don't get into an infinite type loop + const ael = this.addEventListener; + this.addEventListener = () => {}; + on(this, type, fn); + this.addEventListener = ael; + } + /** + * Removes an `event listener` for a specific event from an instance of `EventTarget`. + * This makes it so that the `event listener` will no longer get called when the + * named event happens. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {Function} fn + * The function to remove. + */ + off(type, fn) { + off(this, type, fn); + } + /** + * This function will add an `event listener` that gets triggered only once. After the + * first trigger it will get removed. This is like adding an `event listener` + * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {Function} fn + * The function to be called once for each event name. + */ + one(type, fn) { + // Remove the addEventListener aliasing Events.on + // so we don't get into an infinite type loop + const ael = this.addEventListener; + this.addEventListener = () => {}; + one(this, type, fn); + this.addEventListener = ael; + } + /** + * This function will add an `event listener` that gets triggered only once and is + * removed from all events. This is like adding an array of `event listener`s + * with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the + * first time it is triggered. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {Function} fn + * The function to be called once for each event name. + */ + any(type, fn) { + // Remove the addEventListener aliasing Events.on + // so we don't get into an infinite type loop + const ael = this.addEventListener; + this.addEventListener = () => {}; + any(this, type, fn); + this.addEventListener = ael; + } + /** + * This function causes an event to happen. This will then cause any `event listeners` + * that are waiting for that event, to get called. If there are no `event listeners` + * for an event then nothing will happen. + * + * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`. + * Trigger will also call the `on` + `uppercaseEventName` function. + * + * Example: + * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call + * `onClick` if it exists. + * + * @param {string|EventTarget~Event|Object} event + * The name of the event, an `Event`, or an object with a key of type set to + * an event name. + */ + trigger(event) { + const type = event.type || event; + + // deprecation + // In a future version we should default target to `this` + // similar to how we default the target to `elem` in + // `Events.trigger`. Right now the default `target` will be + // `document` due to the `Event.fixEvent` call. + if (typeof event === 'string') { + event = { + type + }; + } + event = fixEvent(event); + if (this.allowedEvents_[type] && this['on' + type]) { + this['on' + type](event); + } + trigger(this, event); + } + queueTrigger(event) { + // only set up EVENT_MAP if it'll be used + if (!EVENT_MAP) { + EVENT_MAP = new Map(); + } + const type = event.type || event; + let map = EVENT_MAP.get(this); + if (!map) { + map = new Map(); + EVENT_MAP.set(this, map); + } + const oldTimeout = map.get(type); + map.delete(type); + window.clearTimeout(oldTimeout); + const timeout = window.setTimeout(() => { + map.delete(type); + // if we cleared out all timeouts for the current target, delete its map + if (map.size === 0) { + map = null; + EVENT_MAP.delete(this); + } + this.trigger(event); + }, 0); + map.set(type, timeout); + } + } + + /** + * A Custom DOM event. + * + * @typedef {CustomEvent} Event + * @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent} + */ + + /** + * All event listeners should follow the following format. + * + * @callback EventListener + * @this {EventTarget} + * + * @param {Event} event + * the event that triggered this function + * + * @param {Object} [hash] + * hash of data sent during the event + */ + + /** + * An object containing event names as keys and booleans as values. + * + * > NOTE: If an event name is set to a true value here {@link EventTarget#trigger} + * will have extra functionality. See that function for more information. + * + * @property EventTarget.prototype.allowedEvents_ + * @protected + */ + EventTarget.prototype.allowedEvents_ = {}; + + /** + * An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic + * the standard DOM API. + * + * @function + * @see {@link EventTarget#on} + */ + EventTarget.prototype.addEventListener = EventTarget.prototype.on; + + /** + * An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic + * the standard DOM API. + * + * @function + * @see {@link EventTarget#off} + */ + EventTarget.prototype.removeEventListener = EventTarget.prototype.off; + + /** + * An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic + * the standard DOM API. + * + * @function + * @see {@link EventTarget#trigger} + */ + EventTarget.prototype.dispatchEvent = EventTarget.prototype.trigger; + + /** + * @file mixins/evented.js + * @module evented + */ + const objName = obj => { + if (typeof obj.name === 'function') { + return obj.name(); + } + if (typeof obj.name === 'string') { + return obj.name; + } + if (obj.name_) { + return obj.name_; + } + if (obj.constructor && obj.constructor.name) { + return obj.constructor.name; + } + return typeof obj; + }; + + /** + * Returns whether or not an object has had the evented mixin applied. + * + * @param {Object} object + * An object to test. + * + * @return {boolean} + * Whether or not the object appears to be evented. + */ + const isEvented = object => object instanceof EventTarget || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(k => typeof object[k] === 'function'); + + /** + * Adds a callback to run after the evented mixin applied. + * + * @param {Object} target + * An object to Add + * @param {Function} callback + * The callback to run. + */ + const addEventedCallback = (target, callback) => { + if (isEvented(target)) { + callback(); + } else { + if (!target.eventedCallbacks) { + target.eventedCallbacks = []; + } + target.eventedCallbacks.push(callback); + } + }; + + /** + * Whether a value is a valid event type - non-empty string or array. + * + * @private + * @param {string|Array} type + * The type value to test. + * + * @return {boolean} + * Whether or not the type is a valid event type. + */ + const isValidEventType = type => + // The regex here verifies that the `type` contains at least one non- + // whitespace character. + typeof type === 'string' && /\S/.test(type) || Array.isArray(type) && !!type.length; + + /** + * Validates a value to determine if it is a valid event target. Throws if not. + * + * @private + * @throws {Error} + * If the target does not appear to be a valid event target. + * + * @param {Object} target + * The object to test. + * + * @param {Object} obj + * The evented object we are validating for + * + * @param {string} fnName + * The name of the evented mixin function that called this. + */ + const validateTarget = (target, obj, fnName) => { + if (!target || !target.nodeName && !isEvented(target)) { + throw new Error(`Invalid target for ${objName(obj)}#${fnName}; must be a DOM node or evented object.`); + } + }; + + /** + * Validates a value to determine if it is a valid event target. Throws if not. + * + * @private + * @throws {Error} + * If the type does not appear to be a valid event type. + * + * @param {string|Array} type + * The type to test. + * + * @param {Object} obj + * The evented object we are validating for + * + * @param {string} fnName + * The name of the evented mixin function that called this. + */ + const validateEventType = (type, obj, fnName) => { + if (!isValidEventType(type)) { + throw new Error(`Invalid event type for ${objName(obj)}#${fnName}; must be a non-empty string or array.`); + } + }; + + /** + * Validates a value to determine if it is a valid listener. Throws if not. + * + * @private + * @throws {Error} + * If the listener is not a function. + * + * @param {Function} listener + * The listener to test. + * + * @param {Object} obj + * The evented object we are validating for + * + * @param {string} fnName + * The name of the evented mixin function that called this. + */ + const validateListener = (listener, obj, fnName) => { + if (typeof listener !== 'function') { + throw new Error(`Invalid listener for ${objName(obj)}#${fnName}; must be a function.`); + } + }; + + /** + * Takes an array of arguments given to `on()` or `one()`, validates them, and + * normalizes them into an object. + * + * @private + * @param {Object} self + * The evented object on which `on()` or `one()` was called. This + * object will be bound as the `this` value for the listener. + * + * @param {Array} args + * An array of arguments passed to `on()` or `one()`. + * + * @param {string} fnName + * The name of the evented mixin function that called this. + * + * @return {Object} + * An object containing useful values for `on()` or `one()` calls. + */ + const normalizeListenArgs = (self, args, fnName) => { + // If the number of arguments is less than 3, the target is always the + // evented object itself. + const isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_; + let target; + let type; + let listener; + if (isTargetingSelf) { + target = self.eventBusEl_; + + // Deal with cases where we got 3 arguments, but we are still listening to + // the evented object itself. + if (args.length >= 3) { + args.shift(); + } + [type, listener] = args; + } else { + [target, type, listener] = args; + } + validateTarget(target, self, fnName); + validateEventType(type, self, fnName); + validateListener(listener, self, fnName); + listener = bind_(self, listener); + return { + isTargetingSelf, + target, + type, + listener + }; + }; + + /** + * Adds the listener to the event type(s) on the target, normalizing for + * the type of target. + * + * @private + * @param {Element|Object} target + * A DOM node or evented object. + * + * @param {string} method + * The event binding method to use ("on" or "one"). + * + * @param {string|Array} type + * One or more event type(s). + * + * @param {Function} listener + * A listener function. + */ + const listen = (target, method, type, listener) => { + validateTarget(target, target, method); + if (target.nodeName) { + Events[method](target, type, listener); + } else { + target[method](type, listener); + } + }; + + /** + * Contains methods that provide event capabilities to an object which is passed + * to {@link module:evented|evented}. + * + * @mixin EventedMixin + */ + const EventedMixin = { + /** + * Add a listener to an event (or events) on this object or another evented + * object. + * + * @param {string|Array|Element|Object} targetOrType + * If this is a string or array, it represents the event type(s) + * that will trigger the listener. + * + * Another evented object can be passed here instead, which will + * cause the listener to listen for events on _that_ object. + * + * In either case, the listener's `this` value will be bound to + * this object. + * + * @param {string|Array|Function} typeOrListener + * If the first argument was a string or array, this should be the + * listener function. Otherwise, this is a string or array of event + * type(s). + * + * @param {Function} [listener] + * If the first argument was another evented object, this will be + * the listener function. + */ + on(...args) { + const { + isTargetingSelf, + target, + type, + listener + } = normalizeListenArgs(this, args, 'on'); + listen(target, 'on', type, listener); + + // If this object is listening to another evented object. + if (!isTargetingSelf) { + // If this object is disposed, remove the listener. + const removeListenerOnDispose = () => this.off(target, type, listener); + + // Use the same function ID as the listener so we can remove it later it + // using the ID of the original listener. + removeListenerOnDispose.guid = listener.guid; + + // Add a listener to the target's dispose event as well. This ensures + // that if the target is disposed BEFORE this object, we remove the + // removal listener that was just added. Otherwise, we create a memory leak. + const removeRemoverOnTargetDispose = () => this.off('dispose', removeListenerOnDispose); + + // Use the same function ID as the listener so we can remove it later + // it using the ID of the original listener. + removeRemoverOnTargetDispose.guid = listener.guid; + listen(this, 'on', 'dispose', removeListenerOnDispose); + listen(target, 'on', 'dispose', removeRemoverOnTargetDispose); + } + }, + /** + * Add a listener to an event (or events) on this object or another evented + * object. The listener will be called once per event and then removed. + * + * @param {string|Array|Element|Object} targetOrType + * If this is a string or array, it represents the event type(s) + * that will trigger the listener. + * + * Another evented object can be passed here instead, which will + * cause the listener to listen for events on _that_ object. + * + * In either case, the listener's `this` value will be bound to + * this object. + * + * @param {string|Array|Function} typeOrListener + * If the first argument was a string or array, this should be the + * listener function. Otherwise, this is a string or array of event + * type(s). + * + * @param {Function} [listener] + * If the first argument was another evented object, this will be + * the listener function. + */ + one(...args) { + const { + isTargetingSelf, + target, + type, + listener + } = normalizeListenArgs(this, args, 'one'); + + // Targeting this evented object. + if (isTargetingSelf) { + listen(target, 'one', type, listener); + + // Targeting another evented object. + } else { + // TODO: This wrapper is incorrect! It should only + // remove the wrapper for the event type that called it. + // Instead all listeners are removed on the first trigger! + // see https://github.com/videojs/video.js/issues/5962 + const wrapper = (...largs) => { + this.off(target, type, wrapper); + listener.apply(null, largs); + }; + + // Use the same function ID as the listener so we can remove it later + // it using the ID of the original listener. + wrapper.guid = listener.guid; + listen(target, 'one', type, wrapper); + } + }, + /** + * Add a listener to an event (or events) on this object or another evented + * object. The listener will only be called once for the first event that is triggered + * then removed. + * + * @param {string|Array|Element|Object} targetOrType + * If this is a string or array, it represents the event type(s) + * that will trigger the listener. + * + * Another evented object can be passed here instead, which will + * cause the listener to listen for events on _that_ object. + * + * In either case, the listener's `this` value will be bound to + * this object. + * + * @param {string|Array|Function} typeOrListener + * If the first argument was a string or array, this should be the + * listener function. Otherwise, this is a string or array of event + * type(s). + * + * @param {Function} [listener] + * If the first argument was another evented object, this will be + * the listener function. + */ + any(...args) { + const { + isTargetingSelf, + target, + type, + listener + } = normalizeListenArgs(this, args, 'any'); + + // Targeting this evented object. + if (isTargetingSelf) { + listen(target, 'any', type, listener); + + // Targeting another evented object. + } else { + const wrapper = (...largs) => { + this.off(target, type, wrapper); + listener.apply(null, largs); + }; + + // Use the same function ID as the listener so we can remove it later + // it using the ID of the original listener. + wrapper.guid = listener.guid; + listen(target, 'any', type, wrapper); + } + }, + /** + * Removes listener(s) from event(s) on an evented object. + * + * @param {string|Array|Element|Object} [targetOrType] + * If this is a string or array, it represents the event type(s). + * + * Another evented object can be passed here instead, in which case + * ALL 3 arguments are _required_. + * + * @param {string|Array|Function} [typeOrListener] + * If the first argument was a string or array, this may be the + * listener function. Otherwise, this is a string or array of event + * type(s). + * + * @param {Function} [listener] + * If the first argument was another evented object, this will be + * the listener function; otherwise, _all_ listeners bound to the + * event type(s) will be removed. + */ + off(targetOrType, typeOrListener, listener) { + // Targeting this evented object. + if (!targetOrType || isValidEventType(targetOrType)) { + off(this.eventBusEl_, targetOrType, typeOrListener); + + // Targeting another evented object. + } else { + const target = targetOrType; + const type = typeOrListener; + + // Fail fast and in a meaningful way! + validateTarget(target, this, 'off'); + validateEventType(type, this, 'off'); + validateListener(listener, this, 'off'); + + // Ensure there's at least a guid, even if the function hasn't been used + listener = bind_(this, listener); + + // Remove the dispose listener on this evented object, which was given + // the same guid as the event listener in on(). + this.off('dispose', listener); + if (target.nodeName) { + off(target, type, listener); + off(target, 'dispose', listener); + } else if (isEvented(target)) { + target.off(type, listener); + target.off('dispose', listener); + } + } + }, + /** + * Fire an event on this evented object, causing its listeners to be called. + * + * @param {string|Object} event + * An event type or an object with a type property. + * + * @param {Object} [hash] + * An additional object to pass along to listeners. + * + * @return {boolean} + * Whether or not the default behavior was prevented. + */ + trigger(event, hash) { + validateTarget(this.eventBusEl_, this, 'trigger'); + const type = event && typeof event !== 'string' ? event.type : event; + if (!isValidEventType(type)) { + throw new Error(`Invalid event type for ${objName(this)}#trigger; ` + 'must be a non-empty string or object with a type key that has a non-empty value.'); + } + return trigger(this.eventBusEl_, event, hash); + } + }; + + /** + * Applies {@link module:evented~EventedMixin|EventedMixin} to a target object. + * + * @param {Object} target + * The object to which to add event methods. + * + * @param {Object} [options={}] + * Options for customizing the mixin behavior. + * + * @param {string} [options.eventBusKey] + * By default, adds a `eventBusEl_` DOM element to the target object, + * which is used as an event bus. If the target object already has a + * DOM element that should be used, pass its key here. + * + * @return {Object} + * The target object. + */ + function evented(target, options = {}) { + const { + eventBusKey + } = options; + + // Set or create the eventBusEl_. + if (eventBusKey) { + if (!target[eventBusKey].nodeName) { + throw new Error(`The eventBusKey "${eventBusKey}" does not refer to an element.`); + } + target.eventBusEl_ = target[eventBusKey]; + } else { + target.eventBusEl_ = createEl('span', { + className: 'vjs-event-bus' + }); + } + Object.assign(target, EventedMixin); + if (target.eventedCallbacks) { + target.eventedCallbacks.forEach(callback => { + callback(); + }); + } + + // When any evented object is disposed, it removes all its listeners. + target.on('dispose', () => { + target.off(); + [target, target.el_, target.eventBusEl_].forEach(function (val) { + if (val && DomData.has(val)) { + DomData.delete(val); + } + }); + window.setTimeout(() => { + target.eventBusEl_ = null; + }, 0); + }); + return target; + } + + /** + * @file mixins/stateful.js + * @module stateful + */ + + /** + * Contains methods that provide statefulness to an object which is passed + * to {@link module:stateful}. + * + * @mixin StatefulMixin + */ + const StatefulMixin = { + /** + * A hash containing arbitrary keys and values representing the state of + * the object. + * + * @type {Object} + */ + state: {}, + /** + * Set the state of an object by mutating its + * {@link module:stateful~StatefulMixin.state|state} object in place. + * + * @fires module:stateful~StatefulMixin#statechanged + * @param {Object|Function} stateUpdates + * A new set of properties to shallow-merge into the plugin state. + * Can be a plain object or a function returning a plain object. + * + * @return {Object|undefined} + * An object containing changes that occurred. If no changes + * occurred, returns `undefined`. + */ + setState(stateUpdates) { + // Support providing the `stateUpdates` state as a function. + if (typeof stateUpdates === 'function') { + stateUpdates = stateUpdates(); + } + let changes; + each(stateUpdates, (value, key) => { + // Record the change if the value is different from what's in the + // current state. + if (this.state[key] !== value) { + changes = changes || {}; + changes[key] = { + from: this.state[key], + to: value + }; + } + this.state[key] = value; + }); + + // Only trigger "statechange" if there were changes AND we have a trigger + // function. This allows us to not require that the target object be an + // evented object. + if (changes && isEvented(this)) { + /** + * An event triggered on an object that is both + * {@link module:stateful|stateful} and {@link module:evented|evented} + * indicating that its state has changed. + * + * @event module:stateful~StatefulMixin#statechanged + * @type {Object} + * @property {Object} changes + * A hash containing the properties that were changed and + * the values they were changed `from` and `to`. + */ + this.trigger({ + changes, + type: 'statechanged' + }); + } + return changes; + } + }; + + /** + * Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target + * object. + * + * If the target object is {@link module:evented|evented} and has a + * `handleStateChanged` method, that method will be automatically bound to the + * `statechanged` event on itself. + * + * @param {Object} target + * The object to be made stateful. + * + * @param {Object} [defaultState] + * A default set of properties to populate the newly-stateful object's + * `state` property. + * + * @return {Object} + * Returns the `target`. + */ + function stateful(target, defaultState) { + Object.assign(target, StatefulMixin); + + // This happens after the mixing-in because we need to replace the `state` + // added in that step. + target.state = Object.assign({}, target.state, defaultState); + + // Auto-bind the `handleStateChanged` method of the target object if it exists. + if (typeof target.handleStateChanged === 'function' && isEvented(target)) { + target.on('statechanged', target.handleStateChanged); + } + return target; + } + + /** + * @file str.js + * @module to-lower-case + */ + + /** + * Lowercase the first letter of a string. + * + * @param {string} string + * String to be lowercased + * + * @return {string} + * The string with a lowercased first letter + */ + const toLowerCase = function (string) { + if (typeof string !== 'string') { + return string; + } + return string.replace(/./, w => w.toLowerCase()); + }; + + /** + * Uppercase the first letter of a string. + * + * @param {string} string + * String to be uppercased + * + * @return {string} + * The string with an uppercased first letter + */ + const toTitleCase = function (string) { + if (typeof string !== 'string') { + return string; + } + return string.replace(/./, w => w.toUpperCase()); + }; + + /** + * Compares the TitleCase versions of the two strings for equality. + * + * @param {string} str1 + * The first string to compare + * + * @param {string} str2 + * The second string to compare + * + * @return {boolean} + * Whether the TitleCase versions of the strings are equal + */ + const titleCaseEquals = function (str1, str2) { + return toTitleCase(str1) === toTitleCase(str2); + }; + + var Str = /*#__PURE__*/Object.freeze({ + __proto__: null, + toLowerCase: toLowerCase, + toTitleCase: toTitleCase, + titleCaseEquals: titleCaseEquals + }); + + var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {}; + + function unwrapExports (x) { + return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x; + } + + function createCommonjsModule(fn, module) { + return module = { exports: {} }, fn(module, module.exports), module.exports; + } + + var keycode = createCommonjsModule(function (module, exports) { + // Source: http://jsfiddle.net/vWx8V/ + // http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes + + /** + * Conenience method returns corresponding value for given keyName or keyCode. + * + * @param {Mixed} keyCode {Number} or keyName {String} + * @return {Mixed} + * @api public + */ + + function keyCode(searchInput) { + // Keyboard Events + if (searchInput && 'object' === typeof searchInput) { + var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode; + if (hasKeyCode) searchInput = hasKeyCode; + } + + // Numbers + if ('number' === typeof searchInput) return names[searchInput]; + + // Everything else (cast to string) + var search = String(searchInput); + + // check codes + var foundNamedKey = codes[search.toLowerCase()]; + if (foundNamedKey) return foundNamedKey; + + // check aliases + var foundNamedKey = aliases[search.toLowerCase()]; + if (foundNamedKey) return foundNamedKey; + + // weird character? + if (search.length === 1) return search.charCodeAt(0); + return undefined; + } + + /** + * Compares a keyboard event with a given keyCode or keyName. + * + * @param {Event} event Keyboard event that should be tested + * @param {Mixed} keyCode {Number} or keyName {String} + * @return {Boolean} + * @api public + */ + keyCode.isEventKey = function isEventKey(event, nameOrCode) { + if (event && 'object' === typeof event) { + var keyCode = event.which || event.keyCode || event.charCode; + if (keyCode === null || keyCode === undefined) { + return false; + } + if (typeof nameOrCode === 'string') { + // check codes + var foundNamedKey = codes[nameOrCode.toLowerCase()]; + if (foundNamedKey) { + return foundNamedKey === keyCode; + } + + // check aliases + var foundNamedKey = aliases[nameOrCode.toLowerCase()]; + if (foundNamedKey) { + return foundNamedKey === keyCode; + } + } else if (typeof nameOrCode === 'number') { + return nameOrCode === keyCode; + } + return false; + } + }; + exports = module.exports = keyCode; + + /** + * Get by name + * + * exports.code['enter'] // => 13 + */ + + var codes = exports.code = exports.codes = { + 'backspace': 8, + 'tab': 9, + 'enter': 13, + 'shift': 16, + 'ctrl': 17, + 'alt': 18, + 'pause/break': 19, + 'caps lock': 20, + 'esc': 27, + 'space': 32, + 'page up': 33, + 'page down': 34, + 'end': 35, + 'home': 36, + 'left': 37, + 'up': 38, + 'right': 39, + 'down': 40, + 'insert': 45, + 'delete': 46, + 'command': 91, + 'left command': 91, + 'right command': 93, + 'numpad *': 106, + 'numpad +': 107, + 'numpad -': 109, + 'numpad .': 110, + 'numpad /': 111, + 'num lock': 144, + 'scroll lock': 145, + 'my computer': 182, + 'my calculator': 183, + ';': 186, + '=': 187, + ',': 188, + '-': 189, + '.': 190, + '/': 191, + '`': 192, + '[': 219, + '\\': 220, + ']': 221, + "'": 222 + }; + + // Helper aliases + + var aliases = exports.aliases = { + 'windows': 91, + '⇧': 16, + '⌥': 18, + '⌃': 17, + '⌘': 91, + 'ctl': 17, + 'control': 17, + 'option': 18, + 'pause': 19, + 'break': 19, + 'caps': 20, + 'return': 13, + 'escape': 27, + 'spc': 32, + 'spacebar': 32, + 'pgup': 33, + 'pgdn': 34, + 'ins': 45, + 'del': 46, + 'cmd': 91 + }; + + /*! + * Programatically add the following + */ + + // lower case chars + for (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32; + + // numbers + for (var i = 48; i < 58; i++) codes[i - 48] = i; + + // function keys + for (i = 1; i < 13; i++) codes['f' + i] = i + 111; + + // numpad keys + for (i = 0; i < 10; i++) codes['numpad ' + i] = i + 96; + + /** + * Get by code + * + * exports.name[13] // => 'Enter' + */ + + var names = exports.names = exports.title = {}; // title for backward compat + + // Create reverse mapping + for (i in codes) names[codes[i]] = i; + + // Add aliases + for (var alias in aliases) { + codes[alias] = aliases[alias]; + } + }); + keycode.code; + keycode.codes; + keycode.aliases; + keycode.names; + keycode.title; + + /** + * Player Component - Base class for all UI objects + * + * @file component.js + */ + + /** + * Base class for all UI Components. + * Components are UI objects which represent both a javascript object and an element + * in the DOM. They can be children of other components, and can have + * children themselves. + * + * Components can also use methods from {@link EventTarget} + */ + class Component { + /** + * A callback that is called when a component is ready. Does not have any + * parameters and any callback value will be ignored. + * + * @callback ReadyCallback + * @this Component + */ + + /** + * Creates an instance of this class. + * + * @param { import('./player').default } player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of component options. + * + * @param {Object[]} [options.children] + * An array of children objects to initialize this component with. Children objects have + * a name property that will be used if more than one component of the same type needs to be + * added. + * + * @param {string} [options.className] + * A class or space separated list of classes to add the component + * + * @param {ReadyCallback} [ready] + * Function that gets called when the `Component` is ready. + */ + constructor(player, options, ready) { + // The component might be the player itself and we can't pass `this` to super + if (!player && this.play) { + this.player_ = player = this; // eslint-disable-line + } else { + this.player_ = player; + } + this.isDisposed_ = false; + + // Hold the reference to the parent component via `addChild` method + this.parentComponent_ = null; + + // Make a copy of prototype.options_ to protect against overriding defaults + this.options_ = merge({}, this.options_); + + // Updated options with supplied options + options = this.options_ = merge(this.options_, options); + + // Get ID from options or options element if one is supplied + this.id_ = options.id || options.el && options.el.id; + + // If there was no ID from the options, generate one + if (!this.id_) { + // Don't require the player ID function in the case of mock players + const id = player && player.id && player.id() || 'no_player'; + this.id_ = `${id}_component_${newGUID()}`; + } + this.name_ = options.name || null; + + // Create element if one wasn't provided in options + if (options.el) { + this.el_ = options.el; + } else if (options.createEl !== false) { + this.el_ = this.createEl(); + } + if (options.className && this.el_) { + options.className.split(' ').forEach(c => this.addClass(c)); + } + + // Remove the placeholder event methods. If the component is evented, the + // real methods are added next + ['on', 'off', 'one', 'any', 'trigger'].forEach(fn => { + this[fn] = undefined; + }); + + // if evented is anything except false, we want to mixin in evented + if (options.evented !== false) { + // Make this an evented object and use `el_`, if available, as its event bus + evented(this, { + eventBusKey: this.el_ ? 'el_' : null + }); + this.handleLanguagechange = this.handleLanguagechange.bind(this); + this.on(this.player_, 'languagechange', this.handleLanguagechange); + } + stateful(this, this.constructor.defaultState); + this.children_ = []; + this.childIndex_ = {}; + this.childNameIndex_ = {}; + this.setTimeoutIds_ = new Set(); + this.setIntervalIds_ = new Set(); + this.rafIds_ = new Set(); + this.namedRafs_ = new Map(); + this.clearingTimersOnDispose_ = false; + + // Add any child components in options + if (options.initChildren !== false) { + this.initChildren(); + } + + // Don't want to trigger ready here or it will go before init is actually + // finished for all children that run this constructor + this.ready(ready); + if (options.reportTouchActivity !== false) { + this.enableTouchActivity(); + } + } + + // `on`, `off`, `one`, `any` and `trigger` are here so tsc includes them in definitions. + // They are replaced or removed in the constructor + + /** + * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a + * function that will get called when an event with a certain name gets triggered. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {Function} fn + * The function to call with `EventTarget`s + */ + on(type, fn) {} + + /** + * Removes an `event listener` for a specific event from an instance of `EventTarget`. + * This makes it so that the `event listener` will no longer get called when the + * named event happens. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {Function} [fn] + * The function to remove. If not specified, all listeners managed by Video.js will be removed. + */ + off(type, fn) {} + + /** + * This function will add an `event listener` that gets triggered only once. After the + * first trigger it will get removed. This is like adding an `event listener` + * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {Function} fn + * The function to be called once for each event name. + */ + one(type, fn) {} + + /** + * This function will add an `event listener` that gets triggered only once and is + * removed from all events. This is like adding an array of `event listener`s + * with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the + * first time it is triggered. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {Function} fn + * The function to be called once for each event name. + */ + any(type, fn) {} + + /** + * This function causes an event to happen. This will then cause any `event listeners` + * that are waiting for that event, to get called. If there are no `event listeners` + * for an event then nothing will happen. + * + * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`. + * Trigger will also call the `on` + `uppercaseEventName` function. + * + * Example: + * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call + * `onClick` if it exists. + * + * @param {string|Event|Object} event + * The name of the event, an `Event`, or an object with a key of type set to + * an event name. + * + * @param {Object} [hash] + * Optionally extra argument to pass through to an event listener + */ + trigger(event, hash) {} + + /** + * Dispose of the `Component` and all child components. + * + * @fires Component#dispose + * + * @param {Object} options + * @param {Element} options.originalEl element with which to replace player element + */ + dispose(options = {}) { + // Bail out if the component has already been disposed. + if (this.isDisposed_) { + return; + } + if (this.readyQueue_) { + this.readyQueue_.length = 0; + } + + /** + * Triggered when a `Component` is disposed. + * + * @event Component#dispose + * @type {Event} + * + * @property {boolean} [bubbles=false] + * set to false so that the dispose event does not + * bubble up + */ + this.trigger({ + type: 'dispose', + bubbles: false + }); + this.isDisposed_ = true; + + // Dispose all children. + if (this.children_) { + for (let i = this.children_.length - 1; i >= 0; i--) { + if (this.children_[i].dispose) { + this.children_[i].dispose(); + } + } + } + + // Delete child references + this.children_ = null; + this.childIndex_ = null; + this.childNameIndex_ = null; + this.parentComponent_ = null; + if (this.el_) { + // Remove element from DOM + if (this.el_.parentNode) { + if (options.restoreEl) { + this.el_.parentNode.replaceChild(options.restoreEl, this.el_); + } else { + this.el_.parentNode.removeChild(this.el_); + } + } + this.el_ = null; + } + + // remove reference to the player after disposing of the element + this.player_ = null; + } + + /** + * Determine whether or not this component has been disposed. + * + * @return {boolean} + * If the component has been disposed, will be `true`. Otherwise, `false`. + */ + isDisposed() { + return Boolean(this.isDisposed_); + } + + /** + * Return the {@link Player} that the `Component` has attached to. + * + * @return { import('./player').default } + * The player that this `Component` has attached to. + */ + player() { + return this.player_; + } + + /** + * Deep merge of options objects with new options. + * > Note: When both `obj` and `options` contain properties whose values are objects. + * The two properties get merged using {@link module:obj.merge} + * + * @param {Object} obj + * The object that contains new options. + * + * @return {Object} + * A new object of `this.options_` and `obj` merged together. + */ + options(obj) { + if (!obj) { + return this.options_; + } + this.options_ = merge(this.options_, obj); + return this.options_; + } + + /** + * Get the `Component`s DOM element + * + * @return {Element} + * The DOM element for this `Component`. + */ + el() { + return this.el_; + } + + /** + * Create the `Component`s DOM element. + * + * @param {string} [tagName] + * Element's DOM node type. e.g. 'div' + * + * @param {Object} [properties] + * An object of properties that should be set. + * + * @param {Object} [attributes] + * An object of attributes that should be set. + * + * @return {Element} + * The element that gets created. + */ + createEl(tagName, properties, attributes) { + return createEl(tagName, properties, attributes); + } + + /** + * Localize a string given the string in english. + * + * If tokens are provided, it'll try and run a simple token replacement on the provided string. + * The tokens it looks for look like `{1}` with the index being 1-indexed into the tokens array. + * + * If a `defaultValue` is provided, it'll use that over `string`, + * if a value isn't found in provided language files. + * This is useful if you want to have a descriptive key for token replacement + * but have a succinct localized string and not require `en.json` to be included. + * + * Currently, it is used for the progress bar timing. + * ```js + * { + * "progress bar timing: currentTime={1} duration={2}": "{1} of {2}" + * } + * ``` + * It is then used like so: + * ```js + * this.localize('progress bar timing: currentTime={1} duration{2}', + * [this.player_.currentTime(), this.player_.duration()], + * '{1} of {2}'); + * ``` + * + * Which outputs something like: `01:23 of 24:56`. + * + * + * @param {string} string + * The string to localize and the key to lookup in the language files. + * @param {string[]} [tokens] + * If the current item has token replacements, provide the tokens here. + * @param {string} [defaultValue] + * Defaults to `string`. Can be a default value to use for token replacement + * if the lookup key is needed to be separate. + * + * @return {string} + * The localized string or if no localization exists the english string. + */ + localize(string, tokens, defaultValue = string) { + const code = this.player_.language && this.player_.language(); + const languages = this.player_.languages && this.player_.languages(); + const language = languages && languages[code]; + const primaryCode = code && code.split('-')[0]; + const primaryLang = languages && languages[primaryCode]; + let localizedString = defaultValue; + if (language && language[string]) { + localizedString = language[string]; + } else if (primaryLang && primaryLang[string]) { + localizedString = primaryLang[string]; + } + if (tokens) { + localizedString = localizedString.replace(/\{(\d+)\}/g, function (match, index) { + const value = tokens[index - 1]; + let ret = value; + if (typeof value === 'undefined') { + ret = match; + } + return ret; + }); + } + return localizedString; + } + + /** + * Handles language change for the player in components. Should be overridden by sub-components. + * + * @abstract + */ + handleLanguagechange() {} + + /** + * Return the `Component`s DOM element. This is where children get inserted. + * This will usually be the the same as the element returned in {@link Component#el}. + * + * @return {Element} + * The content element for this `Component`. + */ + contentEl() { + return this.contentEl_ || this.el_; + } + + /** + * Get this `Component`s ID + * + * @return {string} + * The id of this `Component` + */ + id() { + return this.id_; + } + + /** + * Get the `Component`s name. The name gets used to reference the `Component` + * and is set during registration. + * + * @return {string} + * The name of this `Component`. + */ + name() { + return this.name_; + } + + /** + * Get an array of all child components + * + * @return {Array} + * The children + */ + children() { + return this.children_; + } + + /** + * Returns the child `Component` with the given `id`. + * + * @param {string} id + * The id of the child `Component` to get. + * + * @return {Component|undefined} + * The child `Component` with the given `id` or undefined. + */ + getChildById(id) { + return this.childIndex_[id]; + } + + /** + * Returns the child `Component` with the given `name`. + * + * @param {string} name + * The name of the child `Component` to get. + * + * @return {Component|undefined} + * The child `Component` with the given `name` or undefined. + */ + getChild(name) { + if (!name) { + return; + } + return this.childNameIndex_[name]; + } + + /** + * Returns the descendant `Component` following the givent + * descendant `names`. For instance ['foo', 'bar', 'baz'] would + * try to get 'foo' on the current component, 'bar' on the 'foo' + * component and 'baz' on the 'bar' component and return undefined + * if any of those don't exist. + * + * @param {...string[]|...string} names + * The name of the child `Component` to get. + * + * @return {Component|undefined} + * The descendant `Component` following the given descendant + * `names` or undefined. + */ + getDescendant(...names) { + // flatten array argument into the main array + names = names.reduce((acc, n) => acc.concat(n), []); + let currentChild = this; + for (let i = 0; i < names.length; i++) { + currentChild = currentChild.getChild(names[i]); + if (!currentChild || !currentChild.getChild) { + return; + } + } + return currentChild; + } + + /** + * Adds an SVG icon element to another element or component. + * + * @param {string} iconName + * The name of icon. A list of all the icon names can be found at 'sandbox/svg-icons.html' + * + * @param {Element} [el=this.el()] + * Element to set the title on. Defaults to the current Component's element. + * + * @return {Element} + * The newly created icon element. + */ + setIcon(iconName, el = this.el()) { + // TODO: In v9 of video.js, we will want to remove font icons entirely. + // This means this check, as well as the others throughout the code, and + // the unecessary CSS for font icons, will need to be removed. + // See https://github.com/videojs/video.js/pull/8260 as to which components + // need updating. + if (!this.player_.options_.experimentalSvgIcons) { + return; + } + const xmlnsURL = 'http://www.w3.org/2000/svg'; + + // The below creates an element in the format of: + // .... + const iconContainer = createEl('span', { + className: 'vjs-icon-placeholder vjs-svg-icon' + }, { + 'aria-hidden': 'true' + }); + const svgEl = document.createElementNS(xmlnsURL, 'svg'); + svgEl.setAttributeNS(null, 'viewBox', '0 0 512 512'); + const useEl = document.createElementNS(xmlnsURL, 'use'); + svgEl.appendChild(useEl); + useEl.setAttributeNS(null, 'href', `#vjs-icon-${iconName}`); + iconContainer.appendChild(svgEl); + + // Replace a pre-existing icon if one exists. + if (this.iconIsSet_) { + el.replaceChild(iconContainer, el.querySelector('.vjs-icon-placeholder')); + } else { + el.appendChild(iconContainer); + } + this.iconIsSet_ = true; + return iconContainer; + } + + /** + * Add a child `Component` inside the current `Component`. + * + * @param {string|Component} child + * The name or instance of a child to add. + * + * @param {Object} [options={}] + * The key/value store of options that will get passed to children of + * the child. + * + * @param {number} [index=this.children_.length] + * The index to attempt to add a child into. + * + * + * @return {Component} + * The `Component` that gets added as a child. When using a string the + * `Component` will get created by this process. + */ + addChild(child, options = {}, index = this.children_.length) { + let component; + let componentName; + + // If child is a string, create component with options + if (typeof child === 'string') { + componentName = toTitleCase(child); + const componentClassName = options.componentClass || componentName; + + // Set name through options + options.name = componentName; + + // Create a new object & element for this controls set + // If there's no .player_, this is a player + const ComponentClass = Component.getComponent(componentClassName); + if (!ComponentClass) { + throw new Error(`Component ${componentClassName} does not exist`); + } + + // data stored directly on the videojs object may be + // misidentified as a component to retain + // backwards-compatibility with 4.x. check to make sure the + // component class can be instantiated. + if (typeof ComponentClass !== 'function') { + return null; + } + component = new ComponentClass(this.player_ || this, options); + + // child is a component instance + } else { + component = child; + } + if (component.parentComponent_) { + component.parentComponent_.removeChild(component); + } + this.children_.splice(index, 0, component); + component.parentComponent_ = this; + if (typeof component.id === 'function') { + this.childIndex_[component.id()] = component; + } + + // If a name wasn't used to create the component, check if we can use the + // name function of the component + componentName = componentName || component.name && toTitleCase(component.name()); + if (componentName) { + this.childNameIndex_[componentName] = component; + this.childNameIndex_[toLowerCase(componentName)] = component; + } + + // Add the UI object's element to the container div (box) + // Having an element is not required + if (typeof component.el === 'function' && component.el()) { + // If inserting before a component, insert before that component's element + let refNode = null; + if (this.children_[index + 1]) { + // Most children are components, but the video tech is an HTML element + if (this.children_[index + 1].el_) { + refNode = this.children_[index + 1].el_; + } else if (isEl(this.children_[index + 1])) { + refNode = this.children_[index + 1]; + } + } + this.contentEl().insertBefore(component.el(), refNode); + } + + // Return so it can stored on parent object if desired. + return component; + } + + /** + * Remove a child `Component` from this `Component`s list of children. Also removes + * the child `Component`s element from this `Component`s element. + * + * @param {Component} component + * The child `Component` to remove. + */ + removeChild(component) { + if (typeof component === 'string') { + component = this.getChild(component); + } + if (!component || !this.children_) { + return; + } + let childFound = false; + for (let i = this.children_.length - 1; i >= 0; i--) { + if (this.children_[i] === component) { + childFound = true; + this.children_.splice(i, 1); + break; + } + } + if (!childFound) { + return; + } + component.parentComponent_ = null; + this.childIndex_[component.id()] = null; + this.childNameIndex_[toTitleCase(component.name())] = null; + this.childNameIndex_[toLowerCase(component.name())] = null; + const compEl = component.el(); + if (compEl && compEl.parentNode === this.contentEl()) { + this.contentEl().removeChild(component.el()); + } + } + + /** + * Add and initialize default child `Component`s based upon options. + */ + initChildren() { + const children = this.options_.children; + if (children) { + // `this` is `parent` + const parentOptions = this.options_; + const handleAdd = child => { + const name = child.name; + let opts = child.opts; + + // Allow options for children to be set at the parent options + // e.g. videojs(id, { controlBar: false }); + // instead of videojs(id, { children: { controlBar: false }); + if (parentOptions[name] !== undefined) { + opts = parentOptions[name]; + } + + // Allow for disabling default components + // e.g. options['children']['posterImage'] = false + if (opts === false) { + return; + } + + // Allow options to be passed as a simple boolean if no configuration + // is necessary. + if (opts === true) { + opts = {}; + } + + // We also want to pass the original player options + // to each component as well so they don't need to + // reach back into the player for options later. + opts.playerOptions = this.options_.playerOptions; + + // Create and add the child component. + // Add a direct reference to the child by name on the parent instance. + // If two of the same component are used, different names should be supplied + // for each + const newChild = this.addChild(name, opts); + if (newChild) { + this[name] = newChild; + } + }; + + // Allow for an array of children details to passed in the options + let workingChildren; + const Tech = Component.getComponent('Tech'); + if (Array.isArray(children)) { + workingChildren = children; + } else { + workingChildren = Object.keys(children); + } + workingChildren + // children that are in this.options_ but also in workingChildren would + // give us extra children we do not want. So, we want to filter them out. + .concat(Object.keys(this.options_).filter(function (child) { + return !workingChildren.some(function (wchild) { + if (typeof wchild === 'string') { + return child === wchild; + } + return child === wchild.name; + }); + })).map(child => { + let name; + let opts; + if (typeof child === 'string') { + name = child; + opts = children[name] || this.options_[name] || {}; + } else { + name = child.name; + opts = child; + } + return { + name, + opts + }; + }).filter(child => { + // we have to make sure that child.name isn't in the techOrder since + // techs are registered as Components but can't aren't compatible + // See https://github.com/videojs/video.js/issues/2772 + const c = Component.getComponent(child.opts.componentClass || toTitleCase(child.name)); + return c && !Tech.isTech(c); + }).forEach(handleAdd); + } + } + + /** + * Builds the default DOM class name. Should be overridden by sub-components. + * + * @return {string} + * The DOM class name for this object. + * + * @abstract + */ + buildCSSClass() { + // Child classes can include a function that does: + // return 'CLASS NAME' + this._super(); + return ''; + } + + /** + * Bind a listener to the component's ready state. + * Different from event listeners in that if the ready event has already happened + * it will trigger the function immediately. + * + * @param {ReadyCallback} fn + * Function that gets called when the `Component` is ready. + * + * @return {Component} + * Returns itself; method can be chained. + */ + ready(fn, sync = false) { + if (!fn) { + return; + } + if (!this.isReady_) { + this.readyQueue_ = this.readyQueue_ || []; + this.readyQueue_.push(fn); + return; + } + if (sync) { + fn.call(this); + } else { + // Call the function asynchronously by default for consistency + this.setTimeout(fn, 1); + } + } + + /** + * Trigger all the ready listeners for this `Component`. + * + * @fires Component#ready + */ + triggerReady() { + this.isReady_ = true; + + // Ensure ready is triggered asynchronously + this.setTimeout(function () { + const readyQueue = this.readyQueue_; + + // Reset Ready Queue + this.readyQueue_ = []; + if (readyQueue && readyQueue.length > 0) { + readyQueue.forEach(function (fn) { + fn.call(this); + }, this); + } + + // Allow for using event listeners also + /** + * Triggered when a `Component` is ready. + * + * @event Component#ready + * @type {Event} + */ + this.trigger('ready'); + }, 1); + } + + /** + * Find a single DOM element matching a `selector`. This can be within the `Component`s + * `contentEl()` or another custom context. + * + * @param {string} selector + * A valid CSS selector, which will be passed to `querySelector`. + * + * @param {Element|string} [context=this.contentEl()] + * A DOM element within which to query. Can also be a selector string in + * which case the first matching element will get used as context. If + * missing `this.contentEl()` gets used. If `this.contentEl()` returns + * nothing it falls back to `document`. + * + * @return {Element|null} + * the dom element that was found, or null + * + * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors) + */ + $(selector, context) { + return $(selector, context || this.contentEl()); + } + + /** + * Finds all DOM element matching a `selector`. This can be within the `Component`s + * `contentEl()` or another custom context. + * + * @param {string} selector + * A valid CSS selector, which will be passed to `querySelectorAll`. + * + * @param {Element|string} [context=this.contentEl()] + * A DOM element within which to query. Can also be a selector string in + * which case the first matching element will get used as context. If + * missing `this.contentEl()` gets used. If `this.contentEl()` returns + * nothing it falls back to `document`. + * + * @return {NodeList} + * a list of dom elements that were found + * + * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors) + */ + $$(selector, context) { + return $$(selector, context || this.contentEl()); + } + + /** + * Check if a component's element has a CSS class name. + * + * @param {string} classToCheck + * CSS class name to check. + * + * @return {boolean} + * - True if the `Component` has the class. + * - False if the `Component` does not have the class` + */ + hasClass(classToCheck) { + return hasClass(this.el_, classToCheck); + } + + /** + * Add a CSS class name to the `Component`s element. + * + * @param {...string} classesToAdd + * One or more CSS class name to add. + */ + addClass(...classesToAdd) { + addClass(this.el_, ...classesToAdd); + } + + /** + * Remove a CSS class name from the `Component`s element. + * + * @param {...string} classesToRemove + * One or more CSS class name to remove. + */ + removeClass(...classesToRemove) { + removeClass(this.el_, ...classesToRemove); + } + + /** + * Add or remove a CSS class name from the component's element. + * - `classToToggle` gets added when {@link Component#hasClass} would return false. + * - `classToToggle` gets removed when {@link Component#hasClass} would return true. + * + * @param {string} classToToggle + * The class to add or remove based on (@link Component#hasClass} + * + * @param {boolean|Dom~predicate} [predicate] + * An {@link Dom~predicate} function or a boolean + */ + toggleClass(classToToggle, predicate) { + toggleClass(this.el_, classToToggle, predicate); + } + + /** + * Show the `Component`s element if it is hidden by removing the + * 'vjs-hidden' class name from it. + */ + show() { + this.removeClass('vjs-hidden'); + } + + /** + * Hide the `Component`s element if it is currently showing by adding the + * 'vjs-hidden` class name to it. + */ + hide() { + this.addClass('vjs-hidden'); + } + + /** + * Lock a `Component`s element in its visible state by adding the 'vjs-lock-showing' + * class name to it. Used during fadeIn/fadeOut. + * + * @private + */ + lockShowing() { + this.addClass('vjs-lock-showing'); + } + + /** + * Unlock a `Component`s element from its visible state by removing the 'vjs-lock-showing' + * class name from it. Used during fadeIn/fadeOut. + * + * @private + */ + unlockShowing() { + this.removeClass('vjs-lock-showing'); + } + + /** + * Get the value of an attribute on the `Component`s element. + * + * @param {string} attribute + * Name of the attribute to get the value from. + * + * @return {string|null} + * - The value of the attribute that was asked for. + * - Can be an empty string on some browsers if the attribute does not exist + * or has no value + * - Most browsers will return null if the attribute does not exist or has + * no value. + * + * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute} + */ + getAttribute(attribute) { + return getAttribute(this.el_, attribute); + } + + /** + * Set the value of an attribute on the `Component`'s element + * + * @param {string} attribute + * Name of the attribute to set. + * + * @param {string} value + * Value to set the attribute to. + * + * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute} + */ + setAttribute(attribute, value) { + setAttribute(this.el_, attribute, value); + } + + /** + * Remove an attribute from the `Component`s element. + * + * @param {string} attribute + * Name of the attribute to remove. + * + * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute} + */ + removeAttribute(attribute) { + removeAttribute(this.el_, attribute); + } + + /** + * Get or set the width of the component based upon the CSS styles. + * See {@link Component#dimension} for more detailed information. + * + * @param {number|string} [num] + * The width that you want to set postfixed with '%', 'px' or nothing. + * + * @param {boolean} [skipListeners] + * Skip the componentresize event trigger + * + * @return {number|undefined} + * The width when getting, zero if there is no width + */ + width(num, skipListeners) { + return this.dimension('width', num, skipListeners); + } + + /** + * Get or set the height of the component based upon the CSS styles. + * See {@link Component#dimension} for more detailed information. + * + * @param {number|string} [num] + * The height that you want to set postfixed with '%', 'px' or nothing. + * + * @param {boolean} [skipListeners] + * Skip the componentresize event trigger + * + * @return {number|undefined} + * The height when getting, zero if there is no height + */ + height(num, skipListeners) { + return this.dimension('height', num, skipListeners); + } + + /** + * Set both the width and height of the `Component` element at the same time. + * + * @param {number|string} width + * Width to set the `Component`s element to. + * + * @param {number|string} height + * Height to set the `Component`s element to. + */ + dimensions(width, height) { + // Skip componentresize listeners on width for optimization + this.width(width, true); + this.height(height); + } + + /** + * Get or set width or height of the `Component` element. This is the shared code + * for the {@link Component#width} and {@link Component#height}. + * + * Things to know: + * - If the width or height in an number this will return the number postfixed with 'px'. + * - If the width/height is a percent this will return the percent postfixed with '%' + * - Hidden elements have a width of 0 with `window.getComputedStyle`. This function + * defaults to the `Component`s `style.width` and falls back to `window.getComputedStyle`. + * See [this]{@link http://www.foliotek.com/devblog/getting-the-width-of-a-hidden-element-with-jquery-using-width/} + * for more information + * - If you want the computed style of the component, use {@link Component#currentWidth} + * and {@link {Component#currentHeight} + * + * @fires Component#componentresize + * + * @param {string} widthOrHeight + 8 'width' or 'height' + * + * @param {number|string} [num] + 8 New dimension + * + * @param {boolean} [skipListeners] + * Skip componentresize event trigger + * + * @return {number|undefined} + * The dimension when getting or 0 if unset + */ + dimension(widthOrHeight, num, skipListeners) { + if (num !== undefined) { + // Set to zero if null or literally NaN (NaN !== NaN) + if (num === null || num !== num) { + num = 0; + } + + // Check if using css width/height (% or px) and adjust + if (('' + num).indexOf('%') !== -1 || ('' + num).indexOf('px') !== -1) { + this.el_.style[widthOrHeight] = num; + } else if (num === 'auto') { + this.el_.style[widthOrHeight] = ''; + } else { + this.el_.style[widthOrHeight] = num + 'px'; + } + + // skipListeners allows us to avoid triggering the resize event when setting both width and height + if (!skipListeners) { + /** + * Triggered when a component is resized. + * + * @event Component#componentresize + * @type {Event} + */ + this.trigger('componentresize'); + } + return; + } + + // Not setting a value, so getting it + // Make sure element exists + if (!this.el_) { + return 0; + } + + // Get dimension value from style + const val = this.el_.style[widthOrHeight]; + const pxIndex = val.indexOf('px'); + if (pxIndex !== -1) { + // Return the pixel value with no 'px' + return parseInt(val.slice(0, pxIndex), 10); + } + + // No px so using % or no style was set, so falling back to offsetWidth/height + // If component has display:none, offset will return 0 + // TODO: handle display:none and no dimension style using px + return parseInt(this.el_['offset' + toTitleCase(widthOrHeight)], 10); + } + + /** + * Get the computed width or the height of the component's element. + * + * Uses `window.getComputedStyle`. + * + * @param {string} widthOrHeight + * A string containing 'width' or 'height'. Whichever one you want to get. + * + * @return {number} + * The dimension that gets asked for or 0 if nothing was set + * for that dimension. + */ + currentDimension(widthOrHeight) { + let computedWidthOrHeight = 0; + if (widthOrHeight !== 'width' && widthOrHeight !== 'height') { + throw new Error('currentDimension only accepts width or height value'); + } + computedWidthOrHeight = computedStyle(this.el_, widthOrHeight); + + // remove 'px' from variable and parse as integer + computedWidthOrHeight = parseFloat(computedWidthOrHeight); + + // if the computed value is still 0, it's possible that the browser is lying + // and we want to check the offset values. + // This code also runs wherever getComputedStyle doesn't exist. + if (computedWidthOrHeight === 0 || isNaN(computedWidthOrHeight)) { + const rule = `offset${toTitleCase(widthOrHeight)}`; + computedWidthOrHeight = this.el_[rule]; + } + return computedWidthOrHeight; + } + + /** + * An object that contains width and height values of the `Component`s + * computed style. Uses `window.getComputedStyle`. + * + * @typedef {Object} Component~DimensionObject + * + * @property {number} width + * The width of the `Component`s computed style. + * + * @property {number} height + * The height of the `Component`s computed style. + */ + + /** + * Get an object that contains computed width and height values of the + * component's element. + * + * Uses `window.getComputedStyle`. + * + * @return {Component~DimensionObject} + * The computed dimensions of the component's element. + */ + currentDimensions() { + return { + width: this.currentDimension('width'), + height: this.currentDimension('height') + }; + } + + /** + * Get the computed width of the component's element. + * + * Uses `window.getComputedStyle`. + * + * @return {number} + * The computed width of the component's element. + */ + currentWidth() { + return this.currentDimension('width'); + } + + /** + * Get the computed height of the component's element. + * + * Uses `window.getComputedStyle`. + * + * @return {number} + * The computed height of the component's element. + */ + currentHeight() { + return this.currentDimension('height'); + } + + /** + * Set the focus to this component + */ + focus() { + this.el_.focus(); + } + + /** + * Remove the focus from this component + */ + blur() { + this.el_.blur(); + } + + /** + * When this Component receives a `keydown` event which it does not process, + * it passes the event to the Player for handling. + * + * @param {KeyboardEvent} event + * The `keydown` event that caused this function to be called. + */ + handleKeyDown(event) { + if (this.player_) { + // We only stop propagation here because we want unhandled events to fall + // back to the browser. Exclude Tab for focus trapping. + if (!keycode.isEventKey(event, 'Tab')) { + event.stopPropagation(); + } + this.player_.handleKeyDown(event); + } + } + + /** + * Many components used to have a `handleKeyPress` method, which was poorly + * named because it listened to a `keydown` event. This method name now + * delegates to `handleKeyDown`. This means anyone calling `handleKeyPress` + * will not see their method calls stop working. + * + * @param {KeyboardEvent} event + * The event that caused this function to be called. + */ + handleKeyPress(event) { + this.handleKeyDown(event); + } + + /** + * Emit a 'tap' events when touch event support gets detected. This gets used to + * support toggling the controls through a tap on the video. They get enabled + * because every sub-component would have extra overhead otherwise. + * + * @protected + * @fires Component#tap + * @listens Component#touchstart + * @listens Component#touchmove + * @listens Component#touchleave + * @listens Component#touchcancel + * @listens Component#touchend + */ + emitTapEvents() { + // Track the start time so we can determine how long the touch lasted + let touchStart = 0; + let firstTouch = null; + + // Maximum movement allowed during a touch event to still be considered a tap + // Other popular libs use anywhere from 2 (hammer.js) to 15, + // so 10 seems like a nice, round number. + const tapMovementThreshold = 10; + + // The maximum length a touch can be while still being considered a tap + const touchTimeThreshold = 200; + let couldBeTap; + this.on('touchstart', function (event) { + // If more than one finger, don't consider treating this as a click + if (event.touches.length === 1) { + // Copy pageX/pageY from the object + firstTouch = { + pageX: event.touches[0].pageX, + pageY: event.touches[0].pageY + }; + // Record start time so we can detect a tap vs. "touch and hold" + touchStart = window.performance.now(); + // Reset couldBeTap tracking + couldBeTap = true; + } + }); + this.on('touchmove', function (event) { + // If more than one finger, don't consider treating this as a click + if (event.touches.length > 1) { + couldBeTap = false; + } else if (firstTouch) { + // Some devices will throw touchmoves for all but the slightest of taps. + // So, if we moved only a small distance, this could still be a tap + const xdiff = event.touches[0].pageX - firstTouch.pageX; + const ydiff = event.touches[0].pageY - firstTouch.pageY; + const touchDistance = Math.sqrt(xdiff * xdiff + ydiff * ydiff); + if (touchDistance > tapMovementThreshold) { + couldBeTap = false; + } + } + }); + const noTap = function () { + couldBeTap = false; + }; + + // TODO: Listen to the original target. http://youtu.be/DujfpXOKUp8?t=13m8s + this.on('touchleave', noTap); + this.on('touchcancel', noTap); + + // When the touch ends, measure how long it took and trigger the appropriate + // event + this.on('touchend', function (event) { + firstTouch = null; + // Proceed only if the touchmove/leave/cancel event didn't happen + if (couldBeTap === true) { + // Measure how long the touch lasted + const touchTime = window.performance.now() - touchStart; + + // Make sure the touch was less than the threshold to be considered a tap + if (touchTime < touchTimeThreshold) { + // Don't let browser turn this into a click + event.preventDefault(); + /** + * Triggered when a `Component` is tapped. + * + * @event Component#tap + * @type {MouseEvent} + */ + this.trigger('tap'); + // It may be good to copy the touchend event object and change the + // type to tap, if the other event properties aren't exact after + // Events.fixEvent runs (e.g. event.target) + } + } + }); + } + + /** + * This function reports user activity whenever touch events happen. This can get + * turned off by any sub-components that wants touch events to act another way. + * + * Report user touch activity when touch events occur. User activity gets used to + * determine when controls should show/hide. It is simple when it comes to mouse + * events, because any mouse event should show the controls. So we capture mouse + * events that bubble up to the player and report activity when that happens. + * With touch events it isn't as easy as `touchstart` and `touchend` toggle player + * controls. So touch events can't help us at the player level either. + * + * User activity gets checked asynchronously. So what could happen is a tap event + * on the video turns the controls off. Then the `touchend` event bubbles up to + * the player. Which, if it reported user activity, would turn the controls right + * back on. We also don't want to completely block touch events from bubbling up. + * Furthermore a `touchmove` event and anything other than a tap, should not turn + * controls back on. + * + * @listens Component#touchstart + * @listens Component#touchmove + * @listens Component#touchend + * @listens Component#touchcancel + */ + enableTouchActivity() { + // Don't continue if the root player doesn't support reporting user activity + if (!this.player() || !this.player().reportUserActivity) { + return; + } + + // listener for reporting that the user is active + const report = bind_(this.player(), this.player().reportUserActivity); + let touchHolding; + this.on('touchstart', function () { + report(); + // For as long as the they are touching the device or have their mouse down, + // we consider them active even if they're not moving their finger or mouse. + // So we want to continue to update that they are active + this.clearInterval(touchHolding); + // report at the same interval as activityCheck + touchHolding = this.setInterval(report, 250); + }); + const touchEnd = function (event) { + report(); + // stop the interval that maintains activity if the touch is holding + this.clearInterval(touchHolding); + }; + this.on('touchmove', report); + this.on('touchend', touchEnd); + this.on('touchcancel', touchEnd); + } + + /** + * A callback that has no parameters and is bound into `Component`s context. + * + * @callback Component~GenericCallback + * @this Component + */ + + /** + * Creates a function that runs after an `x` millisecond timeout. This function is a + * wrapper around `window.setTimeout`. There are a few reasons to use this one + * instead though: + * 1. It gets cleared via {@link Component#clearTimeout} when + * {@link Component#dispose} gets called. + * 2. The function callback will gets turned into a {@link Component~GenericCallback} + * + * > Note: You can't use `window.clearTimeout` on the id returned by this function. This + * will cause its dispose listener not to get cleaned up! Please use + * {@link Component#clearTimeout} or {@link Component#dispose} instead. + * + * @param {Component~GenericCallback} fn + * The function that will be run after `timeout`. + * + * @param {number} timeout + * Timeout in milliseconds to delay before executing the specified function. + * + * @return {number} + * Returns a timeout ID that gets used to identify the timeout. It can also + * get used in {@link Component#clearTimeout} to clear the timeout that + * was set. + * + * @listens Component#dispose + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout} + */ + setTimeout(fn, timeout) { + // declare as variables so they are properly available in timeout function + // eslint-disable-next-line + var timeoutId; + fn = bind_(this, fn); + this.clearTimersOnDispose_(); + timeoutId = window.setTimeout(() => { + if (this.setTimeoutIds_.has(timeoutId)) { + this.setTimeoutIds_.delete(timeoutId); + } + fn(); + }, timeout); + this.setTimeoutIds_.add(timeoutId); + return timeoutId; + } + + /** + * Clears a timeout that gets created via `window.setTimeout` or + * {@link Component#setTimeout}. If you set a timeout via {@link Component#setTimeout} + * use this function instead of `window.clearTimout`. If you don't your dispose + * listener will not get cleaned up until {@link Component#dispose}! + * + * @param {number} timeoutId + * The id of the timeout to clear. The return value of + * {@link Component#setTimeout} or `window.setTimeout`. + * + * @return {number} + * Returns the timeout id that was cleared. + * + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearTimeout} + */ + clearTimeout(timeoutId) { + if (this.setTimeoutIds_.has(timeoutId)) { + this.setTimeoutIds_.delete(timeoutId); + window.clearTimeout(timeoutId); + } + return timeoutId; + } + + /** + * Creates a function that gets run every `x` milliseconds. This function is a wrapper + * around `window.setInterval`. There are a few reasons to use this one instead though. + * 1. It gets cleared via {@link Component#clearInterval} when + * {@link Component#dispose} gets called. + * 2. The function callback will be a {@link Component~GenericCallback} + * + * @param {Component~GenericCallback} fn + * The function to run every `x` seconds. + * + * @param {number} interval + * Execute the specified function every `x` milliseconds. + * + * @return {number} + * Returns an id that can be used to identify the interval. It can also be be used in + * {@link Component#clearInterval} to clear the interval. + * + * @listens Component#dispose + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval} + */ + setInterval(fn, interval) { + fn = bind_(this, fn); + this.clearTimersOnDispose_(); + const intervalId = window.setInterval(fn, interval); + this.setIntervalIds_.add(intervalId); + return intervalId; + } + + /** + * Clears an interval that gets created via `window.setInterval` or + * {@link Component#setInterval}. If you set an interval via {@link Component#setInterval} + * use this function instead of `window.clearInterval`. If you don't your dispose + * listener will not get cleaned up until {@link Component#dispose}! + * + * @param {number} intervalId + * The id of the interval to clear. The return value of + * {@link Component#setInterval} or `window.setInterval`. + * + * @return {number} + * Returns the interval id that was cleared. + * + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearInterval} + */ + clearInterval(intervalId) { + if (this.setIntervalIds_.has(intervalId)) { + this.setIntervalIds_.delete(intervalId); + window.clearInterval(intervalId); + } + return intervalId; + } + + /** + * Queues up a callback to be passed to requestAnimationFrame (rAF), but + * with a few extra bonuses: + * + * - Supports browsers that do not support rAF by falling back to + * {@link Component#setTimeout}. + * + * - The callback is turned into a {@link Component~GenericCallback} (i.e. + * bound to the component). + * + * - Automatic cancellation of the rAF callback is handled if the component + * is disposed before it is called. + * + * @param {Component~GenericCallback} fn + * A function that will be bound to this component and executed just + * before the browser's next repaint. + * + * @return {number} + * Returns an rAF ID that gets used to identify the timeout. It can + * also be used in {@link Component#cancelAnimationFrame} to cancel + * the animation frame callback. + * + * @listens Component#dispose + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame} + */ + requestAnimationFrame(fn) { + this.clearTimersOnDispose_(); + + // declare as variables so they are properly available in rAF function + // eslint-disable-next-line + var id; + fn = bind_(this, fn); + id = window.requestAnimationFrame(() => { + if (this.rafIds_.has(id)) { + this.rafIds_.delete(id); + } + fn(); + }); + this.rafIds_.add(id); + return id; + } + + /** + * Request an animation frame, but only one named animation + * frame will be queued. Another will never be added until + * the previous one finishes. + * + * @param {string} name + * The name to give this requestAnimationFrame + * + * @param {Component~GenericCallback} fn + * A function that will be bound to this component and executed just + * before the browser's next repaint. + */ + requestNamedAnimationFrame(name, fn) { + if (this.namedRafs_.has(name)) { + return; + } + this.clearTimersOnDispose_(); + fn = bind_(this, fn); + const id = this.requestAnimationFrame(() => { + fn(); + if (this.namedRafs_.has(name)) { + this.namedRafs_.delete(name); + } + }); + this.namedRafs_.set(name, id); + return name; + } + + /** + * Cancels a current named animation frame if it exists. + * + * @param {string} name + * The name of the requestAnimationFrame to cancel. + */ + cancelNamedAnimationFrame(name) { + if (!this.namedRafs_.has(name)) { + return; + } + this.cancelAnimationFrame(this.namedRafs_.get(name)); + this.namedRafs_.delete(name); + } + + /** + * Cancels a queued callback passed to {@link Component#requestAnimationFrame} + * (rAF). + * + * If you queue an rAF callback via {@link Component#requestAnimationFrame}, + * use this function instead of `window.cancelAnimationFrame`. If you don't, + * your dispose listener will not get cleaned up until {@link Component#dispose}! + * + * @param {number} id + * The rAF ID to clear. The return value of {@link Component#requestAnimationFrame}. + * + * @return {number} + * Returns the rAF ID that was cleared. + * + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/cancelAnimationFrame} + */ + cancelAnimationFrame(id) { + if (this.rafIds_.has(id)) { + this.rafIds_.delete(id); + window.cancelAnimationFrame(id); + } + return id; + } + + /** + * A function to setup `requestAnimationFrame`, `setTimeout`, + * and `setInterval`, clearing on dispose. + * + * > Previously each timer added and removed dispose listeners on it's own. + * For better performance it was decided to batch them all, and use `Set`s + * to track outstanding timer ids. + * + * @private + */ + clearTimersOnDispose_() { + if (this.clearingTimersOnDispose_) { + return; + } + this.clearingTimersOnDispose_ = true; + this.one('dispose', () => { + [['namedRafs_', 'cancelNamedAnimationFrame'], ['rafIds_', 'cancelAnimationFrame'], ['setTimeoutIds_', 'clearTimeout'], ['setIntervalIds_', 'clearInterval']].forEach(([idName, cancelName]) => { + // for a `Set` key will actually be the value again + // so forEach((val, val) =>` but for maps we want to use + // the key. + this[idName].forEach((val, key) => this[cancelName](key)); + }); + this.clearingTimersOnDispose_ = false; + }); + } + + /** + * Register a `Component` with `videojs` given the name and the component. + * + * > NOTE: {@link Tech}s should not be registered as a `Component`. {@link Tech}s + * should be registered using {@link Tech.registerTech} or + * {@link videojs:videojs.registerTech}. + * + * > NOTE: This function can also be seen on videojs as + * {@link videojs:videojs.registerComponent}. + * + * @param {string} name + * The name of the `Component` to register. + * + * @param {Component} ComponentToRegister + * The `Component` class to register. + * + * @return {Component} + * The `Component` that was registered. + */ + static registerComponent(name, ComponentToRegister) { + if (typeof name !== 'string' || !name) { + throw new Error(`Illegal component name, "${name}"; must be a non-empty string.`); + } + const Tech = Component.getComponent('Tech'); + + // We need to make sure this check is only done if Tech has been registered. + const isTech = Tech && Tech.isTech(ComponentToRegister); + const isComp = Component === ComponentToRegister || Component.prototype.isPrototypeOf(ComponentToRegister.prototype); + if (isTech || !isComp) { + let reason; + if (isTech) { + reason = 'techs must be registered using Tech.registerTech()'; + } else { + reason = 'must be a Component subclass'; + } + throw new Error(`Illegal component, "${name}"; ${reason}.`); + } + name = toTitleCase(name); + if (!Component.components_) { + Component.components_ = {}; + } + const Player = Component.getComponent('Player'); + if (name === 'Player' && Player && Player.players) { + const players = Player.players; + const playerNames = Object.keys(players); + + // If we have players that were disposed, then their name will still be + // in Players.players. So, we must loop through and verify that the value + // for each item is not null. This allows registration of the Player component + // after all players have been disposed or before any were created. + if (players && playerNames.length > 0 && playerNames.map(pname => players[pname]).every(Boolean)) { + throw new Error('Can not register Player component after player has been created.'); + } + } + Component.components_[name] = ComponentToRegister; + Component.components_[toLowerCase(name)] = ComponentToRegister; + return ComponentToRegister; + } + + /** + * Get a `Component` based on the name it was registered with. + * + * @param {string} name + * The Name of the component to get. + * + * @return {typeof Component} + * The `Component` that got registered under the given name. + */ + static getComponent(name) { + if (!name || !Component.components_) { + return; + } + return Component.components_[name]; + } + } + Component.registerComponent('Component', Component); + + /** + * @file time.js + * @module time + */ + + /** + * Returns the time for the specified index at the start or end + * of a TimeRange object. + * + * @typedef {Function} TimeRangeIndex + * + * @param {number} [index=0] + * The range number to return the time for. + * + * @return {number} + * The time offset at the specified index. + * + * @deprecated The index argument must be provided. + * In the future, leaving it out will throw an error. + */ + + /** + * An object that contains ranges of time, which mimics {@link TimeRanges}. + * + * @typedef {Object} TimeRange + * + * @property {number} length + * The number of time ranges represented by this object. + * + * @property {module:time~TimeRangeIndex} start + * Returns the time offset at which a specified time range begins. + * + * @property {module:time~TimeRangeIndex} end + * Returns the time offset at which a specified time range ends. + * + * @see https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges + */ + + /** + * Check if any of the time ranges are over the maximum index. + * + * @private + * @param {string} fnName + * The function name to use for logging + * + * @param {number} index + * The index to check + * + * @param {number} maxIndex + * The maximum possible index + * + * @throws {Error} if the timeRanges provided are over the maxIndex + */ + function rangeCheck(fnName, index, maxIndex) { + if (typeof index !== 'number' || index < 0 || index > maxIndex) { + throw new Error(`Failed to execute '${fnName}' on 'TimeRanges': The index provided (${index}) is non-numeric or out of bounds (0-${maxIndex}).`); + } + } + + /** + * Get the time for the specified index at the start or end + * of a TimeRange object. + * + * @private + * @param {string} fnName + * The function name to use for logging + * + * @param {string} valueIndex + * The property that should be used to get the time. should be + * 'start' or 'end' + * + * @param {Array} ranges + * An array of time ranges + * + * @param {Array} [rangeIndex=0] + * The index to start the search at + * + * @return {number} + * The time that offset at the specified index. + * + * @deprecated rangeIndex must be set to a value, in the future this will throw an error. + * @throws {Error} if rangeIndex is more than the length of ranges + */ + function getRange(fnName, valueIndex, ranges, rangeIndex) { + rangeCheck(fnName, rangeIndex, ranges.length - 1); + return ranges[rangeIndex][valueIndex]; + } + + /** + * Create a time range object given ranges of time. + * + * @private + * @param {Array} [ranges] + * An array of time ranges. + * + * @return {TimeRange} + */ + function createTimeRangesObj(ranges) { + let timeRangesObj; + if (ranges === undefined || ranges.length === 0) { + timeRangesObj = { + length: 0, + start() { + throw new Error('This TimeRanges object is empty'); + }, + end() { + throw new Error('This TimeRanges object is empty'); + } + }; + } else { + timeRangesObj = { + length: ranges.length, + start: getRange.bind(null, 'start', 0, ranges), + end: getRange.bind(null, 'end', 1, ranges) + }; + } + if (window.Symbol && window.Symbol.iterator) { + timeRangesObj[window.Symbol.iterator] = () => (ranges || []).values(); + } + return timeRangesObj; + } + + /** + * Create a `TimeRange` object which mimics an + * {@link https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges|HTML5 TimeRanges instance}. + * + * @param {number|Array[]} start + * The start of a single range (a number) or an array of ranges (an + * array of arrays of two numbers each). + * + * @param {number} end + * The end of a single range. Cannot be used with the array form of + * the `start` argument. + * + * @return {TimeRange} + */ + function createTimeRanges(start, end) { + if (Array.isArray(start)) { + return createTimeRangesObj(start); + } else if (start === undefined || end === undefined) { + return createTimeRangesObj(); + } + return createTimeRangesObj([[start, end]]); + } + + /** + * Format seconds as a time string, H:MM:SS or M:SS. Supplying a guide (in + * seconds) will force a number of leading zeros to cover the length of the + * guide. + * + * @private + * @param {number} seconds + * Number of seconds to be turned into a string + * + * @param {number} guide + * Number (in seconds) to model the string after + * + * @return {string} + * Time formatted as H:MM:SS or M:SS + */ + const defaultImplementation = function (seconds, guide) { + seconds = seconds < 0 ? 0 : seconds; + let s = Math.floor(seconds % 60); + let m = Math.floor(seconds / 60 % 60); + let h = Math.floor(seconds / 3600); + const gm = Math.floor(guide / 60 % 60); + const gh = Math.floor(guide / 3600); + + // handle invalid times + if (isNaN(seconds) || seconds === Infinity) { + // '-' is false for all relational operators (e.g. <, >=) so this setting + // will add the minimum number of fields specified by the guide + h = m = s = '-'; + } + + // Check if we need to show hours + h = h > 0 || gh > 0 ? h + ':' : ''; + + // If hours are showing, we may need to add a leading zero. + // Always show at least one digit of minutes. + m = ((h || gm >= 10) && m < 10 ? '0' + m : m) + ':'; + + // Check if leading zero is need for seconds + s = s < 10 ? '0' + s : s; + return h + m + s; + }; + + // Internal pointer to the current implementation. + let implementation = defaultImplementation; + + /** + * Replaces the default formatTime implementation with a custom implementation. + * + * @param {Function} customImplementation + * A function which will be used in place of the default formatTime + * implementation. Will receive the current time in seconds and the + * guide (in seconds) as arguments. + */ + function setFormatTime(customImplementation) { + implementation = customImplementation; + } + + /** + * Resets formatTime to the default implementation. + */ + function resetFormatTime() { + implementation = defaultImplementation; + } + + /** + * Delegates to either the default time formatting function or a custom + * function supplied via `setFormatTime`. + * + * Formats seconds as a time string (H:MM:SS or M:SS). Supplying a + * guide (in seconds) will force a number of leading zeros to cover the + * length of the guide. + * + * @example formatTime(125, 600) === "02:05" + * @param {number} seconds + * Number of seconds to be turned into a string + * + * @param {number} guide + * Number (in seconds) to model the string after + * + * @return {string} + * Time formatted as H:MM:SS or M:SS + */ + function formatTime(seconds, guide = seconds) { + return implementation(seconds, guide); + } + + var Time = /*#__PURE__*/Object.freeze({ + __proto__: null, + createTimeRanges: createTimeRanges, + createTimeRange: createTimeRanges, + setFormatTime: setFormatTime, + resetFormatTime: resetFormatTime, + formatTime: formatTime + }); + + /** + * @file buffer.js + * @module buffer + */ + + /** + * Compute the percentage of the media that has been buffered. + * + * @param { import('./time').TimeRange } buffered + * The current `TimeRanges` object representing buffered time ranges + * + * @param {number} duration + * Total duration of the media + * + * @return {number} + * Percent buffered of the total duration in decimal form. + */ + function bufferedPercent(buffered, duration) { + let bufferedDuration = 0; + let start; + let end; + if (!duration) { + return 0; + } + if (!buffered || !buffered.length) { + buffered = createTimeRanges(0, 0); + } + for (let i = 0; i < buffered.length; i++) { + start = buffered.start(i); + end = buffered.end(i); + + // buffered end can be bigger than duration by a very small fraction + if (end > duration) { + end = duration; + } + bufferedDuration += end - start; + } + return bufferedDuration / duration; + } + + /** + * @file media-error.js + */ + + /** + * A Custom `MediaError` class which mimics the standard HTML5 `MediaError` class. + * + * @param {number|string|Object|MediaError} value + * This can be of multiple types: + * - number: should be a standard error code + * - string: an error message (the code will be 0) + * - Object: arbitrary properties + * - `MediaError` (native): used to populate a video.js `MediaError` object + * - `MediaError` (video.js): will return itself if it's already a + * video.js `MediaError` object. + * + * @see [MediaError Spec]{@link https://dev.w3.org/html5/spec-author-view/video.html#mediaerror} + * @see [Encrypted MediaError Spec]{@link https://www.w3.org/TR/2013/WD-encrypted-media-20130510/#error-codes} + * + * @class MediaError + */ + function MediaError(value) { + // Allow redundant calls to this constructor to avoid having `instanceof` + // checks peppered around the code. + if (value instanceof MediaError) { + return value; + } + if (typeof value === 'number') { + this.code = value; + } else if (typeof value === 'string') { + // default code is zero, so this is a custom error + this.message = value; + } else if (isObject(value)) { + // We assign the `code` property manually because native `MediaError` objects + // do not expose it as an own/enumerable property of the object. + if (typeof value.code === 'number') { + this.code = value.code; + } + Object.assign(this, value); + } + if (!this.message) { + this.message = MediaError.defaultMessages[this.code] || ''; + } + } + + /** + * The error code that refers two one of the defined `MediaError` types + * + * @type {Number} + */ + MediaError.prototype.code = 0; + + /** + * An optional message that to show with the error. Message is not part of the HTML5 + * video spec but allows for more informative custom errors. + * + * @type {String} + */ + MediaError.prototype.message = ''; + + /** + * An optional status code that can be set by plugins to allow even more detail about + * the error. For example a plugin might provide a specific HTTP status code and an + * error message for that code. Then when the plugin gets that error this class will + * know how to display an error message for it. This allows a custom message to show + * up on the `Player` error overlay. + * + * @type {Array} + */ + MediaError.prototype.status = null; + + /** + * An object containing an error type, as well as other information regarding the error. + * + * @typedef {{errorType: string, [key: string]: any}} ErrorMetadata + */ + + /** + * An optional object to give more detail about the error. This can be used to give + * a higher level of specificity to an error versus the more generic MediaError codes. + * `metadata` expects an `errorType` string that should align with the values from videojs.Error. + * + * @type {ErrorMetadata} + */ + MediaError.prototype.metadata = null; + + /** + * Errors indexed by the W3C standard. The order **CANNOT CHANGE**! See the + * specification listed under {@link MediaError} for more information. + * + * @enum {array} + * @readonly + * @property {string} 0 - MEDIA_ERR_CUSTOM + * @property {string} 1 - MEDIA_ERR_ABORTED + * @property {string} 2 - MEDIA_ERR_NETWORK + * @property {string} 3 - MEDIA_ERR_DECODE + * @property {string} 4 - MEDIA_ERR_SRC_NOT_SUPPORTED + * @property {string} 5 - MEDIA_ERR_ENCRYPTED + */ + MediaError.errorTypes = ['MEDIA_ERR_CUSTOM', 'MEDIA_ERR_ABORTED', 'MEDIA_ERR_NETWORK', 'MEDIA_ERR_DECODE', 'MEDIA_ERR_SRC_NOT_SUPPORTED', 'MEDIA_ERR_ENCRYPTED']; + + /** + * The default `MediaError` messages based on the {@link MediaError.errorTypes}. + * + * @type {Array} + * @constant + */ + MediaError.defaultMessages = { + 1: 'You aborted the media playback', + 2: 'A network error caused the media download to fail part-way.', + 3: 'The media playback was aborted due to a corruption problem or because the media used features your browser did not support.', + 4: 'The media could not be loaded, either because the server or network failed or because the format is not supported.', + 5: 'The media is encrypted and we do not have the keys to decrypt it.' + }; + + /** + * W3C error code for any custom error. + * + * @member MediaError#MEDIA_ERR_CUSTOM + * @constant {number} + * @default 0 + */ + MediaError.MEDIA_ERR_CUSTOM = 0; + + /** + * W3C error code for any custom error. + * + * @member MediaError.MEDIA_ERR_CUSTOM + * @constant {number} + * @default 0 + */ + MediaError.prototype.MEDIA_ERR_CUSTOM = 0; + + /** + * W3C error code for media error aborted. + * + * @member MediaError#MEDIA_ERR_ABORTED + * @constant {number} + * @default 1 + */ + MediaError.MEDIA_ERR_ABORTED = 1; + + /** + * W3C error code for media error aborted. + * + * @member MediaError.MEDIA_ERR_ABORTED + * @constant {number} + * @default 1 + */ + MediaError.prototype.MEDIA_ERR_ABORTED = 1; + + /** + * W3C error code for any network error. + * + * @member MediaError#MEDIA_ERR_NETWORK + * @constant {number} + * @default 2 + */ + MediaError.MEDIA_ERR_NETWORK = 2; + + /** + * W3C error code for any network error. + * + * @member MediaError.MEDIA_ERR_NETWORK + * @constant {number} + * @default 2 + */ + MediaError.prototype.MEDIA_ERR_NETWORK = 2; + + /** + * W3C error code for any decoding error. + * + * @member MediaError#MEDIA_ERR_DECODE + * @constant {number} + * @default 3 + */ + MediaError.MEDIA_ERR_DECODE = 3; + + /** + * W3C error code for any decoding error. + * + * @member MediaError.MEDIA_ERR_DECODE + * @constant {number} + * @default 3 + */ + MediaError.prototype.MEDIA_ERR_DECODE = 3; + + /** + * W3C error code for any time that a source is not supported. + * + * @member MediaError#MEDIA_ERR_SRC_NOT_SUPPORTED + * @constant {number} + * @default 4 + */ + MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED = 4; + + /** + * W3C error code for any time that a source is not supported. + * + * @member MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED + * @constant {number} + * @default 4 + */ + MediaError.prototype.MEDIA_ERR_SRC_NOT_SUPPORTED = 4; + + /** + * W3C error code for any time that a source is encrypted. + * + * @member MediaError#MEDIA_ERR_ENCRYPTED + * @constant {number} + * @default 5 + */ + MediaError.MEDIA_ERR_ENCRYPTED = 5; + + /** + * W3C error code for any time that a source is encrypted. + * + * @member MediaError.MEDIA_ERR_ENCRYPTED + * @constant {number} + * @default 5 + */ + MediaError.prototype.MEDIA_ERR_ENCRYPTED = 5; + + var tuple = SafeParseTuple; + function SafeParseTuple(obj, reviver) { + var json; + var error = null; + try { + json = JSON.parse(obj, reviver); + } catch (err) { + error = err; + } + return [error, json]; + } + + /** + * Returns whether an object is `Promise`-like (i.e. has a `then` method). + * + * @param {Object} value + * An object that may or may not be `Promise`-like. + * + * @return {boolean} + * Whether or not the object is `Promise`-like. + */ + function isPromise(value) { + return value !== undefined && value !== null && typeof value.then === 'function'; + } + + /** + * Silence a Promise-like object. + * + * This is useful for avoiding non-harmful, but potentially confusing "uncaught + * play promise" rejection error messages. + * + * @param {Object} value + * An object that may or may not be `Promise`-like. + */ + function silencePromise(value) { + if (isPromise(value)) { + value.then(null, e => {}); + } + } + + /** + * @file text-track-list-converter.js Utilities for capturing text track state and + * re-creating tracks based on a capture. + * + * @module text-track-list-converter + */ + + /** + * Examine a single {@link TextTrack} and return a JSON-compatible javascript object that + * represents the {@link TextTrack}'s state. + * + * @param {TextTrack} track + * The text track to query. + * + * @return {Object} + * A serializable javascript representation of the TextTrack. + * @private + */ + const trackToJson_ = function (track) { + const ret = ['kind', 'label', 'language', 'id', 'inBandMetadataTrackDispatchType', 'mode', 'src'].reduce((acc, prop, i) => { + if (track[prop]) { + acc[prop] = track[prop]; + } + return acc; + }, { + cues: track.cues && Array.prototype.map.call(track.cues, function (cue) { + return { + startTime: cue.startTime, + endTime: cue.endTime, + text: cue.text, + id: cue.id + }; + }) + }); + return ret; + }; + + /** + * Examine a {@link Tech} and return a JSON-compatible javascript array that represents the + * state of all {@link TextTrack}s currently configured. The return array is compatible with + * {@link text-track-list-converter:jsonToTextTracks}. + * + * @param { import('../tech/tech').default } tech + * The tech object to query + * + * @return {Array} + * A serializable javascript representation of the {@link Tech}s + * {@link TextTrackList}. + */ + const textTracksToJson = function (tech) { + const trackEls = tech.$$('track'); + const trackObjs = Array.prototype.map.call(trackEls, t => t.track); + const tracks = Array.prototype.map.call(trackEls, function (trackEl) { + const json = trackToJson_(trackEl.track); + if (trackEl.src) { + json.src = trackEl.src; + } + return json; + }); + return tracks.concat(Array.prototype.filter.call(tech.textTracks(), function (track) { + return trackObjs.indexOf(track) === -1; + }).map(trackToJson_)); + }; + + /** + * Create a set of remote {@link TextTrack}s on a {@link Tech} based on an array of javascript + * object {@link TextTrack} representations. + * + * @param {Array} json + * An array of `TextTrack` representation objects, like those that would be + * produced by `textTracksToJson`. + * + * @param {Tech} tech + * The `Tech` to create the `TextTrack`s on. + */ + const jsonToTextTracks = function (json, tech) { + json.forEach(function (track) { + const addedTrack = tech.addRemoteTextTrack(track).track; + if (!track.src && track.cues) { + track.cues.forEach(cue => addedTrack.addCue(cue)); + } + }); + return tech.textTracks(); + }; + var textTrackConverter = { + textTracksToJson, + jsonToTextTracks, + trackToJson_ + }; + + /** + * @file modal-dialog.js + */ + const MODAL_CLASS_NAME = 'vjs-modal-dialog'; + + /** + * The `ModalDialog` displays over the video and its controls, which blocks + * interaction with the player until it is closed. + * + * Modal dialogs include a "Close" button and will close when that button + * is activated - or when ESC is pressed anywhere. + * + * @extends Component + */ + class ModalDialog extends Component { + /** + * Create an instance of this class. + * + * @param { import('./player').default } player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param { import('./utils/dom').ContentDescriptor} [options.content=undefined] + * Provide customized content for this modal. + * + * @param {string} [options.description] + * A text description for the modal, primarily for accessibility. + * + * @param {boolean} [options.fillAlways=false] + * Normally, modals are automatically filled only the first time + * they open. This tells the modal to refresh its content + * every time it opens. + * + * @param {string} [options.label] + * A text label for the modal, primarily for accessibility. + * + * @param {boolean} [options.pauseOnOpen=true] + * If `true`, playback will will be paused if playing when + * the modal opens, and resumed when it closes. + * + * @param {boolean} [options.temporary=true] + * If `true`, the modal can only be opened once; it will be + * disposed as soon as it's closed. + * + * @param {boolean} [options.uncloseable=false] + * If `true`, the user will not be able to close the modal + * through the UI in the normal ways. Programmatic closing is + * still possible. + */ + constructor(player, options) { + super(player, options); + this.handleKeyDown_ = e => this.handleKeyDown(e); + this.close_ = e => this.close(e); + this.opened_ = this.hasBeenOpened_ = this.hasBeenFilled_ = false; + this.closeable(!this.options_.uncloseable); + this.content(this.options_.content); + + // Make sure the contentEl is defined AFTER any children are initialized + // because we only want the contents of the modal in the contentEl + // (not the UI elements like the close button). + this.contentEl_ = createEl('div', { + className: `${MODAL_CLASS_NAME}-content` + }, { + role: 'document' + }); + this.descEl_ = createEl('p', { + className: `${MODAL_CLASS_NAME}-description vjs-control-text`, + id: this.el().getAttribute('aria-describedby') + }); + textContent(this.descEl_, this.description()); + this.el_.appendChild(this.descEl_); + this.el_.appendChild(this.contentEl_); + } + + /** + * Create the `ModalDialog`'s DOM element + * + * @return {Element} + * The DOM element that gets created. + */ + createEl() { + return super.createEl('div', { + className: this.buildCSSClass(), + tabIndex: -1 + }, { + 'aria-describedby': `${this.id()}_description`, + 'aria-hidden': 'true', + 'aria-label': this.label(), + 'role': 'dialog', + 'aria-live': 'polite' + }); + } + dispose() { + this.contentEl_ = null; + this.descEl_ = null; + this.previouslyActiveEl_ = null; + super.dispose(); + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + buildCSSClass() { + return `${MODAL_CLASS_NAME} vjs-hidden ${super.buildCSSClass()}`; + } + + /** + * Returns the label string for this modal. Primarily used for accessibility. + * + * @return {string} + * the localized or raw label of this modal. + */ + label() { + return this.localize(this.options_.label || 'Modal Window'); + } + + /** + * Returns the description string for this modal. Primarily used for + * accessibility. + * + * @return {string} + * The localized or raw description of this modal. + */ + description() { + let desc = this.options_.description || this.localize('This is a modal window.'); + + // Append a universal closeability message if the modal is closeable. + if (this.closeable()) { + desc += ' ' + this.localize('This modal can be closed by pressing the Escape key or activating the close button.'); + } + return desc; + } + + /** + * Opens the modal. + * + * @fires ModalDialog#beforemodalopen + * @fires ModalDialog#modalopen + */ + open() { + if (this.opened_) { + if (this.options_.fillAlways) { + this.fill(); + } + return; + } + const player = this.player(); + + /** + * Fired just before a `ModalDialog` is opened. + * + * @event ModalDialog#beforemodalopen + * @type {Event} + */ + this.trigger('beforemodalopen'); + this.opened_ = true; + + // Fill content if the modal has never opened before and + // never been filled. + if (this.options_.fillAlways || !this.hasBeenOpened_ && !this.hasBeenFilled_) { + this.fill(); + } + + // If the player was playing, pause it and take note of its previously + // playing state. + this.wasPlaying_ = !player.paused(); + if (this.options_.pauseOnOpen && this.wasPlaying_) { + player.pause(); + } + this.on('keydown', this.handleKeyDown_); + + // Hide controls and note if they were enabled. + this.hadControls_ = player.controls(); + player.controls(false); + this.show(); + this.conditionalFocus_(); + this.el().setAttribute('aria-hidden', 'false'); + + /** + * Fired just after a `ModalDialog` is opened. + * + * @event ModalDialog#modalopen + * @type {Event} + */ + this.trigger('modalopen'); + this.hasBeenOpened_ = true; + } + + /** + * If the `ModalDialog` is currently open or closed. + * + * @param {boolean} [value] + * If given, it will open (`true`) or close (`false`) the modal. + * + * @return {boolean} + * the current open state of the modaldialog + */ + opened(value) { + if (typeof value === 'boolean') { + this[value ? 'open' : 'close'](); + } + return this.opened_; + } + + /** + * Closes the modal, does nothing if the `ModalDialog` is + * not open. + * + * @fires ModalDialog#beforemodalclose + * @fires ModalDialog#modalclose + */ + close() { + if (!this.opened_) { + return; + } + const player = this.player(); + + /** + * Fired just before a `ModalDialog` is closed. + * + * @event ModalDialog#beforemodalclose + * @type {Event} + */ + this.trigger('beforemodalclose'); + this.opened_ = false; + if (this.wasPlaying_ && this.options_.pauseOnOpen) { + player.play(); + } + this.off('keydown', this.handleKeyDown_); + if (this.hadControls_) { + player.controls(true); + } + this.hide(); + this.el().setAttribute('aria-hidden', 'true'); + + /** + * Fired just after a `ModalDialog` is closed. + * + * @event ModalDialog#modalclose + * @type {Event} + */ + this.trigger('modalclose'); + this.conditionalBlur_(); + if (this.options_.temporary) { + this.dispose(); + } + } + + /** + * Check to see if the `ModalDialog` is closeable via the UI. + * + * @param {boolean} [value] + * If given as a boolean, it will set the `closeable` option. + * + * @return {boolean} + * Returns the final value of the closable option. + */ + closeable(value) { + if (typeof value === 'boolean') { + const closeable = this.closeable_ = !!value; + let close = this.getChild('closeButton'); + + // If this is being made closeable and has no close button, add one. + if (closeable && !close) { + // The close button should be a child of the modal - not its + // content element, so temporarily change the content element. + const temp = this.contentEl_; + this.contentEl_ = this.el_; + close = this.addChild('closeButton', { + controlText: 'Close Modal Dialog' + }); + this.contentEl_ = temp; + this.on(close, 'close', this.close_); + } + + // If this is being made uncloseable and has a close button, remove it. + if (!closeable && close) { + this.off(close, 'close', this.close_); + this.removeChild(close); + close.dispose(); + } + } + return this.closeable_; + } + + /** + * Fill the modal's content element with the modal's "content" option. + * The content element will be emptied before this change takes place. + */ + fill() { + this.fillWith(this.content()); + } + + /** + * Fill the modal's content element with arbitrary content. + * The content element will be emptied before this change takes place. + * + * @fires ModalDialog#beforemodalfill + * @fires ModalDialog#modalfill + * + * @param { import('./utils/dom').ContentDescriptor} [content] + * The same rules apply to this as apply to the `content` option. + */ + fillWith(content) { + const contentEl = this.contentEl(); + const parentEl = contentEl.parentNode; + const nextSiblingEl = contentEl.nextSibling; + + /** + * Fired just before a `ModalDialog` is filled with content. + * + * @event ModalDialog#beforemodalfill + * @type {Event} + */ + this.trigger('beforemodalfill'); + this.hasBeenFilled_ = true; + + // Detach the content element from the DOM before performing + // manipulation to avoid modifying the live DOM multiple times. + parentEl.removeChild(contentEl); + this.empty(); + insertContent(contentEl, content); + /** + * Fired just after a `ModalDialog` is filled with content. + * + * @event ModalDialog#modalfill + * @type {Event} + */ + this.trigger('modalfill'); + + // Re-inject the re-filled content element. + if (nextSiblingEl) { + parentEl.insertBefore(contentEl, nextSiblingEl); + } else { + parentEl.appendChild(contentEl); + } + + // make sure that the close button is last in the dialog DOM + const closeButton = this.getChild('closeButton'); + if (closeButton) { + parentEl.appendChild(closeButton.el_); + } + } + + /** + * Empties the content element. This happens anytime the modal is filled. + * + * @fires ModalDialog#beforemodalempty + * @fires ModalDialog#modalempty + */ + empty() { + /** + * Fired just before a `ModalDialog` is emptied. + * + * @event ModalDialog#beforemodalempty + * @type {Event} + */ + this.trigger('beforemodalempty'); + emptyEl(this.contentEl()); + + /** + * Fired just after a `ModalDialog` is emptied. + * + * @event ModalDialog#modalempty + * @type {Event} + */ + this.trigger('modalempty'); + } + + /** + * Gets or sets the modal content, which gets normalized before being + * rendered into the DOM. + * + * This does not update the DOM or fill the modal, but it is called during + * that process. + * + * @param { import('./utils/dom').ContentDescriptor} [value] + * If defined, sets the internal content value to be used on the + * next call(s) to `fill`. This value is normalized before being + * inserted. To "clear" the internal content value, pass `null`. + * + * @return { import('./utils/dom').ContentDescriptor} + * The current content of the modal dialog + */ + content(value) { + if (typeof value !== 'undefined') { + this.content_ = value; + } + return this.content_; + } + + /** + * conditionally focus the modal dialog if focus was previously on the player. + * + * @private + */ + conditionalFocus_() { + const activeEl = document.activeElement; + const playerEl = this.player_.el_; + this.previouslyActiveEl_ = null; + if (playerEl.contains(activeEl) || playerEl === activeEl) { + this.previouslyActiveEl_ = activeEl; + this.focus(); + } + } + + /** + * conditionally blur the element and refocus the last focused element + * + * @private + */ + conditionalBlur_() { + if (this.previouslyActiveEl_) { + this.previouslyActiveEl_.focus(); + this.previouslyActiveEl_ = null; + } + } + + /** + * Keydown handler. Attached when modal is focused. + * + * @listens keydown + */ + handleKeyDown(event) { + // Do not allow keydowns to reach out of the modal dialog. + event.stopPropagation(); + if (keycode.isEventKey(event, 'Escape') && this.closeable()) { + event.preventDefault(); + this.close(); + return; + } + + // exit early if it isn't a tab key + if (!keycode.isEventKey(event, 'Tab')) { + return; + } + const focusableEls = this.focusableEls_(); + const activeEl = this.el_.querySelector(':focus'); + let focusIndex; + for (let i = 0; i < focusableEls.length; i++) { + if (activeEl === focusableEls[i]) { + focusIndex = i; + break; + } + } + if (document.activeElement === this.el_) { + focusIndex = 0; + } + if (event.shiftKey && focusIndex === 0) { + focusableEls[focusableEls.length - 1].focus(); + event.preventDefault(); + } else if (!event.shiftKey && focusIndex === focusableEls.length - 1) { + focusableEls[0].focus(); + event.preventDefault(); + } + } + + /** + * get all focusable elements + * + * @private + */ + focusableEls_() { + const allChildren = this.el_.querySelectorAll('*'); + return Array.prototype.filter.call(allChildren, child => { + return (child instanceof window.HTMLAnchorElement || child instanceof window.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window.HTMLInputElement || child instanceof window.HTMLSelectElement || child instanceof window.HTMLTextAreaElement || child instanceof window.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window.HTMLIFrameElement || child instanceof window.HTMLObjectElement || child instanceof window.HTMLEmbedElement || child.hasAttribute('tabindex') && child.getAttribute('tabindex') !== -1 || child.hasAttribute('contenteditable'); + }); + } + } + + /** + * Default options for `ModalDialog` default options. + * + * @type {Object} + * @private + */ + ModalDialog.prototype.options_ = { + pauseOnOpen: true, + temporary: true + }; + Component.registerComponent('ModalDialog', ModalDialog); + + /** + * @file track-list.js + */ + + /** + * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and + * {@link VideoTrackList} + * + * @extends EventTarget + */ + class TrackList extends EventTarget { + /** + * Create an instance of this class + * + * @param { import('./track').default[] } tracks + * A list of tracks to initialize the list with. + * + * @abstract + */ + constructor(tracks = []) { + super(); + this.tracks_ = []; + + /** + * @memberof TrackList + * @member {number} length + * The current number of `Track`s in the this Trackist. + * @instance + */ + Object.defineProperty(this, 'length', { + get() { + return this.tracks_.length; + } + }); + for (let i = 0; i < tracks.length; i++) { + this.addTrack(tracks[i]); + } + } + + /** + * Add a {@link Track} to the `TrackList` + * + * @param { import('./track').default } track + * The audio, video, or text track to add to the list. + * + * @fires TrackList#addtrack + */ + addTrack(track) { + const index = this.tracks_.length; + if (!('' + index in this)) { + Object.defineProperty(this, index, { + get() { + return this.tracks_[index]; + } + }); + } + + // Do not add duplicate tracks + if (this.tracks_.indexOf(track) === -1) { + this.tracks_.push(track); + /** + * Triggered when a track is added to a track list. + * + * @event TrackList#addtrack + * @type {Event} + * @property {Track} track + * A reference to track that was added. + */ + this.trigger({ + track, + type: 'addtrack', + target: this + }); + } + + /** + * Triggered when a track label is changed. + * + * @event TrackList#addtrack + * @type {Event} + * @property {Track} track + * A reference to track that was added. + */ + track.labelchange_ = () => { + this.trigger({ + track, + type: 'labelchange', + target: this + }); + }; + if (isEvented(track)) { + track.addEventListener('labelchange', track.labelchange_); + } + } + + /** + * Remove a {@link Track} from the `TrackList` + * + * @param { import('./track').default } rtrack + * The audio, video, or text track to remove from the list. + * + * @fires TrackList#removetrack + */ + removeTrack(rtrack) { + let track; + for (let i = 0, l = this.length; i < l; i++) { + if (this[i] === rtrack) { + track = this[i]; + if (track.off) { + track.off(); + } + this.tracks_.splice(i, 1); + break; + } + } + if (!track) { + return; + } + + /** + * Triggered when a track is removed from track list. + * + * @event TrackList#removetrack + * @type {Event} + * @property {Track} track + * A reference to track that was removed. + */ + this.trigger({ + track, + type: 'removetrack', + target: this + }); + } + + /** + * Get a Track from the TrackList by a tracks id + * + * @param {string} id - the id of the track to get + * @method getTrackById + * @return { import('./track').default } + * @private + */ + getTrackById(id) { + let result = null; + for (let i = 0, l = this.length; i < l; i++) { + const track = this[i]; + if (track.id === id) { + result = track; + break; + } + } + return result; + } + } + + /** + * Triggered when a different track is selected/enabled. + * + * @event TrackList#change + * @type {Event} + */ + + /** + * Events that can be called with on + eventName. See {@link EventHandler}. + * + * @property {Object} TrackList#allowedEvents_ + * @protected + */ + TrackList.prototype.allowedEvents_ = { + change: 'change', + addtrack: 'addtrack', + removetrack: 'removetrack', + labelchange: 'labelchange' + }; + + // emulate attribute EventHandler support to allow for feature detection + for (const event in TrackList.prototype.allowedEvents_) { + TrackList.prototype['on' + event] = null; + } + + /** + * @file audio-track-list.js + */ + + /** + * Anywhere we call this function we diverge from the spec + * as we only support one enabled audiotrack at a time + * + * @param {AudioTrackList} list + * list to work on + * + * @param { import('./audio-track').default } track + * The track to skip + * + * @private + */ + const disableOthers$1 = function (list, track) { + for (let i = 0; i < list.length; i++) { + if (!Object.keys(list[i]).length || track.id === list[i].id) { + continue; + } + // another audio track is enabled, disable it + list[i].enabled = false; + } + }; + + /** + * The current list of {@link AudioTrack} for a media file. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist} + * @extends TrackList + */ + class AudioTrackList extends TrackList { + /** + * Create an instance of this class. + * + * @param { import('./audio-track').default[] } [tracks=[]] + * A list of `AudioTrack` to instantiate the list with. + */ + constructor(tracks = []) { + // make sure only 1 track is enabled + // sorted from last index to first index + for (let i = tracks.length - 1; i >= 0; i--) { + if (tracks[i].enabled) { + disableOthers$1(tracks, tracks[i]); + break; + } + } + super(tracks); + this.changing_ = false; + } + + /** + * Add an {@link AudioTrack} to the `AudioTrackList`. + * + * @param { import('./audio-track').default } track + * The AudioTrack to add to the list + * + * @fires TrackList#addtrack + */ + addTrack(track) { + if (track.enabled) { + disableOthers$1(this, track); + } + super.addTrack(track); + // native tracks don't have this + if (!track.addEventListener) { + return; + } + track.enabledChange_ = () => { + // when we are disabling other tracks (since we don't support + // more than one track at a time) we will set changing_ + // to true so that we don't trigger additional change events + if (this.changing_) { + return; + } + this.changing_ = true; + disableOthers$1(this, track); + this.changing_ = false; + this.trigger('change'); + }; + + /** + * @listens AudioTrack#enabledchange + * @fires TrackList#change + */ + track.addEventListener('enabledchange', track.enabledChange_); + } + removeTrack(rtrack) { + super.removeTrack(rtrack); + if (rtrack.removeEventListener && rtrack.enabledChange_) { + rtrack.removeEventListener('enabledchange', rtrack.enabledChange_); + rtrack.enabledChange_ = null; + } + } + } + + /** + * @file video-track-list.js + */ + + /** + * Un-select all other {@link VideoTrack}s that are selected. + * + * @param {VideoTrackList} list + * list to work on + * + * @param { import('./video-track').default } track + * The track to skip + * + * @private + */ + const disableOthers = function (list, track) { + for (let i = 0; i < list.length; i++) { + if (!Object.keys(list[i]).length || track.id === list[i].id) { + continue; + } + // another video track is enabled, disable it + list[i].selected = false; + } + }; + + /** + * The current list of {@link VideoTrack} for a video. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist} + * @extends TrackList + */ + class VideoTrackList extends TrackList { + /** + * Create an instance of this class. + * + * @param {VideoTrack[]} [tracks=[]] + * A list of `VideoTrack` to instantiate the list with. + */ + constructor(tracks = []) { + // make sure only 1 track is enabled + // sorted from last index to first index + for (let i = tracks.length - 1; i >= 0; i--) { + if (tracks[i].selected) { + disableOthers(tracks, tracks[i]); + break; + } + } + super(tracks); + this.changing_ = false; + + /** + * @member {number} VideoTrackList#selectedIndex + * The current index of the selected {@link VideoTrack`}. + */ + Object.defineProperty(this, 'selectedIndex', { + get() { + for (let i = 0; i < this.length; i++) { + if (this[i].selected) { + return i; + } + } + return -1; + }, + set() {} + }); + } + + /** + * Add a {@link VideoTrack} to the `VideoTrackList`. + * + * @param { import('./video-track').default } track + * The VideoTrack to add to the list + * + * @fires TrackList#addtrack + */ + addTrack(track) { + if (track.selected) { + disableOthers(this, track); + } + super.addTrack(track); + // native tracks don't have this + if (!track.addEventListener) { + return; + } + track.selectedChange_ = () => { + if (this.changing_) { + return; + } + this.changing_ = true; + disableOthers(this, track); + this.changing_ = false; + this.trigger('change'); + }; + + /** + * @listens VideoTrack#selectedchange + * @fires TrackList#change + */ + track.addEventListener('selectedchange', track.selectedChange_); + } + removeTrack(rtrack) { + super.removeTrack(rtrack); + if (rtrack.removeEventListener && rtrack.selectedChange_) { + rtrack.removeEventListener('selectedchange', rtrack.selectedChange_); + rtrack.selectedChange_ = null; + } + } + } + + /** + * @file text-track-list.js + */ + + /** + * The current list of {@link TextTrack} for a media file. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttracklist} + * @extends TrackList + */ + class TextTrackList extends TrackList { + /** + * Add a {@link TextTrack} to the `TextTrackList` + * + * @param { import('./text-track').default } track + * The text track to add to the list. + * + * @fires TrackList#addtrack + */ + addTrack(track) { + super.addTrack(track); + if (!this.queueChange_) { + this.queueChange_ = () => this.queueTrigger('change'); + } + if (!this.triggerSelectedlanguagechange) { + this.triggerSelectedlanguagechange_ = () => this.trigger('selectedlanguagechange'); + } + + /** + * @listens TextTrack#modechange + * @fires TrackList#change + */ + track.addEventListener('modechange', this.queueChange_); + const nonLanguageTextTrackKind = ['metadata', 'chapters']; + if (nonLanguageTextTrackKind.indexOf(track.kind) === -1) { + track.addEventListener('modechange', this.triggerSelectedlanguagechange_); + } + } + removeTrack(rtrack) { + super.removeTrack(rtrack); + + // manually remove the event handlers we added + if (rtrack.removeEventListener) { + if (this.queueChange_) { + rtrack.removeEventListener('modechange', this.queueChange_); + } + if (this.selectedlanguagechange_) { + rtrack.removeEventListener('modechange', this.triggerSelectedlanguagechange_); + } + } + } + } + + /** + * @file html-track-element-list.js + */ + + /** + * The current list of {@link HtmlTrackElement}s. + */ + class HtmlTrackElementList { + /** + * Create an instance of this class. + * + * @param {HtmlTrackElement[]} [tracks=[]] + * A list of `HtmlTrackElement` to instantiate the list with. + */ + constructor(trackElements = []) { + this.trackElements_ = []; + + /** + * @memberof HtmlTrackElementList + * @member {number} length + * The current number of `Track`s in the this Trackist. + * @instance + */ + Object.defineProperty(this, 'length', { + get() { + return this.trackElements_.length; + } + }); + for (let i = 0, length = trackElements.length; i < length; i++) { + this.addTrackElement_(trackElements[i]); + } + } + + /** + * Add an {@link HtmlTrackElement} to the `HtmlTrackElementList` + * + * @param {HtmlTrackElement} trackElement + * The track element to add to the list. + * + * @private + */ + addTrackElement_(trackElement) { + const index = this.trackElements_.length; + if (!('' + index in this)) { + Object.defineProperty(this, index, { + get() { + return this.trackElements_[index]; + } + }); + } + + // Do not add duplicate elements + if (this.trackElements_.indexOf(trackElement) === -1) { + this.trackElements_.push(trackElement); + } + } + + /** + * Get an {@link HtmlTrackElement} from the `HtmlTrackElementList` given an + * {@link TextTrack}. + * + * @param {TextTrack} track + * The track associated with a track element. + * + * @return {HtmlTrackElement|undefined} + * The track element that was found or undefined. + * + * @private + */ + getTrackElementByTrack_(track) { + let trackElement_; + for (let i = 0, length = this.trackElements_.length; i < length; i++) { + if (track === this.trackElements_[i].track) { + trackElement_ = this.trackElements_[i]; + break; + } + } + return trackElement_; + } + + /** + * Remove a {@link HtmlTrackElement} from the `HtmlTrackElementList` + * + * @param {HtmlTrackElement} trackElement + * The track element to remove from the list. + * + * @private + */ + removeTrackElement_(trackElement) { + for (let i = 0, length = this.trackElements_.length; i < length; i++) { + if (trackElement === this.trackElements_[i]) { + if (this.trackElements_[i].track && typeof this.trackElements_[i].track.off === 'function') { + this.trackElements_[i].track.off(); + } + if (typeof this.trackElements_[i].off === 'function') { + this.trackElements_[i].off(); + } + this.trackElements_.splice(i, 1); + break; + } + } + } + } + + /** + * @file text-track-cue-list.js + */ + + /** + * @typedef {Object} TextTrackCueList~TextTrackCue + * + * @property {string} id + * The unique id for this text track cue + * + * @property {number} startTime + * The start time for this text track cue + * + * @property {number} endTime + * The end time for this text track cue + * + * @property {boolean} pauseOnExit + * Pause when the end time is reached if true. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcue} + */ + + /** + * A List of TextTrackCues. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcuelist} + */ + class TextTrackCueList { + /** + * Create an instance of this class.. + * + * @param {Array} cues + * A list of cues to be initialized with + */ + constructor(cues) { + TextTrackCueList.prototype.setCues_.call(this, cues); + + /** + * @memberof TextTrackCueList + * @member {number} length + * The current number of `TextTrackCue`s in the TextTrackCueList. + * @instance + */ + Object.defineProperty(this, 'length', { + get() { + return this.length_; + } + }); + } + + /** + * A setter for cues in this list. Creates getters + * an an index for the cues. + * + * @param {Array} cues + * An array of cues to set + * + * @private + */ + setCues_(cues) { + const oldLength = this.length || 0; + let i = 0; + const l = cues.length; + this.cues_ = cues; + this.length_ = cues.length; + const defineProp = function (index) { + if (!('' + index in this)) { + Object.defineProperty(this, '' + index, { + get() { + return this.cues_[index]; + } + }); + } + }; + if (oldLength < l) { + i = oldLength; + for (; i < l; i++) { + defineProp.call(this, i); + } + } + } + + /** + * Get a `TextTrackCue` that is currently in the `TextTrackCueList` by id. + * + * @param {string} id + * The id of the cue that should be searched for. + * + * @return {TextTrackCueList~TextTrackCue|null} + * A single cue or null if none was found. + */ + getCueById(id) { + let result = null; + for (let i = 0, l = this.length; i < l; i++) { + const cue = this[i]; + if (cue.id === id) { + result = cue; + break; + } + } + return result; + } + } + + /** + * @file track-kinds.js + */ + + /** + * All possible `VideoTrackKind`s + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind + * @typedef VideoTrack~Kind + * @enum + */ + const VideoTrackKind = { + alternative: 'alternative', + captions: 'captions', + main: 'main', + sign: 'sign', + subtitles: 'subtitles', + commentary: 'commentary' + }; + + /** + * All possible `AudioTrackKind`s + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-audiotrack-kind + * @typedef AudioTrack~Kind + * @enum + */ + const AudioTrackKind = { + 'alternative': 'alternative', + 'descriptions': 'descriptions', + 'main': 'main', + 'main-desc': 'main-desc', + 'translation': 'translation', + 'commentary': 'commentary' + }; + + /** + * All possible `TextTrackKind`s + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrack-kind + * @typedef TextTrack~Kind + * @enum + */ + const TextTrackKind = { + subtitles: 'subtitles', + captions: 'captions', + descriptions: 'descriptions', + chapters: 'chapters', + metadata: 'metadata' + }; + + /** + * All possible `TextTrackMode`s + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackmode + * @typedef TextTrack~Mode + * @enum + */ + const TextTrackMode = { + disabled: 'disabled', + hidden: 'hidden', + showing: 'showing' + }; + + /** + * @file track.js + */ + + /** + * A Track class that contains all of the common functionality for {@link AudioTrack}, + * {@link VideoTrack}, and {@link TextTrack}. + * + * > Note: This class should not be used directly + * + * @see {@link https://html.spec.whatwg.org/multipage/embedded-content.html} + * @extends EventTarget + * @abstract + */ + class Track extends EventTarget { + /** + * Create an instance of this class. + * + * @param {Object} [options={}] + * Object of option names and values + * + * @param {string} [options.kind=''] + * A valid kind for the track type you are creating. + * + * @param {string} [options.id='vjs_track_' + Guid.newGUID()] + * A unique id for this AudioTrack. + * + * @param {string} [options.label=''] + * The menu label for this track. + * + * @param {string} [options.language=''] + * A valid two character language code. + * + * @abstract + */ + constructor(options = {}) { + super(); + const trackProps = { + id: options.id || 'vjs_track_' + newGUID(), + kind: options.kind || '', + language: options.language || '' + }; + let label = options.label || ''; + + /** + * @memberof Track + * @member {string} id + * The id of this track. Cannot be changed after creation. + * @instance + * + * @readonly + */ + + /** + * @memberof Track + * @member {string} kind + * The kind of track that this is. Cannot be changed after creation. + * @instance + * + * @readonly + */ + + /** + * @memberof Track + * @member {string} language + * The two letter language code for this track. Cannot be changed after + * creation. + * @instance + * + * @readonly + */ + + for (const key in trackProps) { + Object.defineProperty(this, key, { + get() { + return trackProps[key]; + }, + set() {} + }); + } + + /** + * @memberof Track + * @member {string} label + * The label of this track. Cannot be changed after creation. + * @instance + * + * @fires Track#labelchange + */ + Object.defineProperty(this, 'label', { + get() { + return label; + }, + set(newLabel) { + if (newLabel !== label) { + label = newLabel; + + /** + * An event that fires when label changes on this track. + * + * > Note: This is not part of the spec! + * + * @event Track#labelchange + * @type {Event} + */ + this.trigger('labelchange'); + } + } + }); + } + } + + /** + * @file url.js + * @module url + */ + + /** + * @typedef {Object} url:URLObject + * + * @property {string} protocol + * The protocol of the url that was parsed. + * + * @property {string} hostname + * The hostname of the url that was parsed. + * + * @property {string} port + * The port of the url that was parsed. + * + * @property {string} pathname + * The pathname of the url that was parsed. + * + * @property {string} search + * The search query of the url that was parsed. + * + * @property {string} hash + * The hash of the url that was parsed. + * + * @property {string} host + * The host of the url that was parsed. + */ + + /** + * Resolve and parse the elements of a URL. + * + * @function + * @param {String} url + * The url to parse + * + * @return {url:URLObject} + * An object of url details + */ + const parseUrl = function (url) { + // This entire method can be replace with URL once we are able to drop IE11 + + const props = ['protocol', 'hostname', 'port', 'pathname', 'search', 'hash', 'host']; + + // add the url to an anchor and let the browser parse the URL + const a = document.createElement('a'); + a.href = url; + + // Copy the specific URL properties to a new object + // This is also needed for IE because the anchor loses its + // properties when it's removed from the dom + const details = {}; + for (let i = 0; i < props.length; i++) { + details[props[i]] = a[props[i]]; + } + + // IE adds the port to the host property unlike everyone else. If + // a port identifier is added for standard ports, strip it. + if (details.protocol === 'http:') { + details.host = details.host.replace(/:80$/, ''); + } + if (details.protocol === 'https:') { + details.host = details.host.replace(/:443$/, ''); + } + if (!details.protocol) { + details.protocol = window.location.protocol; + } + + /* istanbul ignore if */ + if (!details.host) { + details.host = window.location.host; + } + return details; + }; + + /** + * Get absolute version of relative URL. + * + * @function + * @param {string} url + * URL to make absolute + * + * @return {string} + * Absolute URL + * + * @see http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue + */ + const getAbsoluteURL = function (url) { + // Check if absolute URL + if (!url.match(/^https?:\/\//)) { + // Add the url to an anchor and let the browser parse it to convert to an absolute url + const a = document.createElement('a'); + a.href = url; + url = a.href; + } + return url; + }; + + /** + * Returns the extension of the passed file name. It will return an empty string + * if passed an invalid path. + * + * @function + * @param {string} path + * The fileName path like '/path/to/file.mp4' + * + * @return {string} + * The extension in lower case or an empty string if no + * extension could be found. + */ + const getFileExtension = function (path) { + if (typeof path === 'string') { + const splitPathRe = /^(\/?)([\s\S]*?)((?:\.{1,2}|[^\/]+?)(\.([^\.\/\?]+)))(?:[\/]*|[\?].*)$/; + const pathParts = splitPathRe.exec(path); + if (pathParts) { + return pathParts.pop().toLowerCase(); + } + } + return ''; + }; + + /** + * Returns whether the url passed is a cross domain request or not. + * + * @function + * @param {string} url + * The url to check. + * + * @param {Object} [winLoc] + * the domain to check the url against, defaults to window.location + * + * @param {string} [winLoc.protocol] + * The window location protocol defaults to window.location.protocol + * + * @param {string} [winLoc.host] + * The window location host defaults to window.location.host + * + * @return {boolean} + * Whether it is a cross domain request or not. + */ + const isCrossOrigin = function (url, winLoc = window.location) { + const urlInfo = parseUrl(url); + + // IE8 protocol relative urls will return ':' for protocol + const srcProtocol = urlInfo.protocol === ':' ? winLoc.protocol : urlInfo.protocol; + + // Check if url is for another domain/origin + // IE8 doesn't know location.origin, so we won't rely on it here + const crossOrigin = srcProtocol + urlInfo.host !== winLoc.protocol + winLoc.host; + return crossOrigin; + }; + + var Url = /*#__PURE__*/Object.freeze({ + __proto__: null, + parseUrl: parseUrl, + getAbsoluteURL: getAbsoluteURL, + getFileExtension: getFileExtension, + isCrossOrigin: isCrossOrigin + }); + + var win; + if (typeof window !== "undefined") { + win = window; + } else if (typeof commonjsGlobal !== "undefined") { + win = commonjsGlobal; + } else if (typeof self !== "undefined") { + win = self; + } else { + win = {}; + } + var window_1 = win; + + var _extends_1 = createCommonjsModule(function (module) { + function _extends() { + module.exports = _extends = Object.assign ? Object.assign.bind() : function (target) { + for (var i = 1; i < arguments.length; i++) { + var source = arguments[i]; + for (var key in source) { + if (Object.prototype.hasOwnProperty.call(source, key)) { + target[key] = source[key]; + } + } + } + return target; + }, module.exports.__esModule = true, module.exports["default"] = module.exports; + return _extends.apply(this, arguments); + } + module.exports = _extends, module.exports.__esModule = true, module.exports["default"] = module.exports; + }); + unwrapExports(_extends_1); + + var isFunction_1 = isFunction; + var toString = Object.prototype.toString; + function isFunction(fn) { + if (!fn) { + return false; + } + var string = toString.call(fn); + return string === '[object Function]' || typeof fn === 'function' && string !== '[object RegExp]' || typeof window !== 'undefined' && ( + // IE8 and below + fn === window.setTimeout || fn === window.alert || fn === window.confirm || fn === window.prompt); + } + + var httpResponseHandler = function httpResponseHandler(callback, decodeResponseBody) { + if (decodeResponseBody === void 0) { + decodeResponseBody = false; + } + return function (err, response, responseBody) { + // if the XHR failed, return that error + if (err) { + callback(err); + return; + } // if the HTTP status code is 4xx or 5xx, the request also failed + + if (response.statusCode >= 400 && response.statusCode <= 599) { + var cause = responseBody; + if (decodeResponseBody) { + if (window_1.TextDecoder) { + var charset = getCharset(response.headers && response.headers['content-type']); + try { + cause = new TextDecoder(charset).decode(responseBody); + } catch (e) {} + } else { + cause = String.fromCharCode.apply(null, new Uint8Array(responseBody)); + } + } + callback({ + cause: cause + }); + return; + } // otherwise, request succeeded + + callback(null, responseBody); + }; + }; + function getCharset(contentTypeHeader) { + if (contentTypeHeader === void 0) { + contentTypeHeader = ''; + } + return contentTypeHeader.toLowerCase().split(';').reduce(function (charset, contentType) { + var _contentType$split = contentType.split('='), + type = _contentType$split[0], + value = _contentType$split[1]; + if (type.trim() === 'charset') { + return value.trim(); + } + return charset; + }, 'utf-8'); + } + var httpHandler = httpResponseHandler; + + createXHR.httpHandler = httpHandler; + /** + * @license + * slighly modified parse-headers 2.0.2 + * Copyright (c) 2014 David Björklund + * Available under the MIT license + * + */ + + var parseHeaders = function parseHeaders(headers) { + var result = {}; + if (!headers) { + return result; + } + headers.trim().split('\n').forEach(function (row) { + var index = row.indexOf(':'); + var key = row.slice(0, index).trim().toLowerCase(); + var value = row.slice(index + 1).trim(); + if (typeof result[key] === 'undefined') { + result[key] = value; + } else if (Array.isArray(result[key])) { + result[key].push(value); + } else { + result[key] = [result[key], value]; + } + }); + return result; + }; + var lib = createXHR; // Allow use of default import syntax in TypeScript + + var default_1 = createXHR; + createXHR.XMLHttpRequest = window_1.XMLHttpRequest || noop; + createXHR.XDomainRequest = "withCredentials" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window_1.XDomainRequest; + forEachArray(["get", "put", "post", "patch", "head", "delete"], function (method) { + createXHR[method === "delete" ? "del" : method] = function (uri, options, callback) { + options = initParams(uri, options, callback); + options.method = method.toUpperCase(); + return _createXHR(options); + }; + }); + function forEachArray(array, iterator) { + for (var i = 0; i < array.length; i++) { + iterator(array[i]); + } + } + function isEmpty(obj) { + for (var i in obj) { + if (obj.hasOwnProperty(i)) return false; + } + return true; + } + function initParams(uri, options, callback) { + var params = uri; + if (isFunction_1(options)) { + callback = options; + if (typeof uri === "string") { + params = { + uri: uri + }; + } + } else { + params = _extends_1({}, options, { + uri: uri + }); + } + params.callback = callback; + return params; + } + function createXHR(uri, options, callback) { + options = initParams(uri, options, callback); + return _createXHR(options); + } + function _createXHR(options) { + if (typeof options.callback === "undefined") { + throw new Error("callback argument missing"); + } + var called = false; + var callback = function cbOnce(err, response, body) { + if (!called) { + called = true; + options.callback(err, response, body); + } + }; + function readystatechange() { + if (xhr.readyState === 4) { + setTimeout(loadFunc, 0); + } + } + function getBody() { + // Chrome with requestType=blob throws errors arround when even testing access to responseText + var body = undefined; + if (xhr.response) { + body = xhr.response; + } else { + body = xhr.responseText || getXml(xhr); + } + if (isJson) { + try { + body = JSON.parse(body); + } catch (e) {} + } + return body; + } + function errorFunc(evt) { + clearTimeout(timeoutTimer); + if (!(evt instanceof Error)) { + evt = new Error("" + (evt || "Unknown XMLHttpRequest Error")); + } + evt.statusCode = 0; + return callback(evt, failureResponse); + } // will load the data & process the response in a special response object + + function loadFunc() { + if (aborted) return; + var status; + clearTimeout(timeoutTimer); + if (options.useXDR && xhr.status === undefined) { + //IE8 CORS GET successful response doesn't have a status field, but body is fine + status = 200; + } else { + status = xhr.status === 1223 ? 204 : xhr.status; + } + var response = failureResponse; + var err = null; + if (status !== 0) { + response = { + body: getBody(), + statusCode: status, + method: method, + headers: {}, + url: uri, + rawRequest: xhr + }; + if (xhr.getAllResponseHeaders) { + //remember xhr can in fact be XDR for CORS in IE + response.headers = parseHeaders(xhr.getAllResponseHeaders()); + } + } else { + err = new Error("Internal XMLHttpRequest Error"); + } + return callback(err, response, response.body); + } + var xhr = options.xhr || null; + if (!xhr) { + if (options.cors || options.useXDR) { + xhr = new createXHR.XDomainRequest(); + } else { + xhr = new createXHR.XMLHttpRequest(); + } + } + var key; + var aborted; + var uri = xhr.url = options.uri || options.url; + var method = xhr.method = options.method || "GET"; + var body = options.body || options.data; + var headers = xhr.headers = options.headers || {}; + var sync = !!options.sync; + var isJson = false; + var timeoutTimer; + var failureResponse = { + body: undefined, + headers: {}, + statusCode: 0, + method: method, + url: uri, + rawRequest: xhr + }; + if ("json" in options && options.json !== false) { + isJson = true; + headers["accept"] || headers["Accept"] || (headers["Accept"] = "application/json"); //Don't override existing accept header declared by user + + if (method !== "GET" && method !== "HEAD") { + headers["content-type"] || headers["Content-Type"] || (headers["Content-Type"] = "application/json"); //Don't override existing accept header declared by user + + body = JSON.stringify(options.json === true ? body : options.json); + } + } + xhr.onreadystatechange = readystatechange; + xhr.onload = loadFunc; + xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function. + + xhr.onprogress = function () {// IE must die + }; + xhr.onabort = function () { + aborted = true; + }; + xhr.ontimeout = errorFunc; + xhr.open(method, uri, !sync, options.username, options.password); //has to be after open + + if (!sync) { + xhr.withCredentials = !!options.withCredentials; + } // Cannot set timeout with sync request + // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly + // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent + + if (!sync && options.timeout > 0) { + timeoutTimer = setTimeout(function () { + if (aborted) return; + aborted = true; //IE9 may still call readystatechange + + xhr.abort("timeout"); + var e = new Error("XMLHttpRequest timeout"); + e.code = "ETIMEDOUT"; + errorFunc(e); + }, options.timeout); + } + if (xhr.setRequestHeader) { + for (key in headers) { + if (headers.hasOwnProperty(key)) { + xhr.setRequestHeader(key, headers[key]); + } + } + } else if (options.headers && !isEmpty(options.headers)) { + throw new Error("Headers cannot be set on an XDomainRequest object"); + } + if ("responseType" in options) { + xhr.responseType = options.responseType; + } + if ("beforeSend" in options && typeof options.beforeSend === "function") { + options.beforeSend(xhr); + } // Microsoft Edge browser sends "undefined" when send is called with undefined value. + // XMLHttpRequest spec says to pass null as body to indicate no body + // See https://github.com/naugtur/xhr/issues/100. + + xhr.send(body || null); + return xhr; + } + function getXml(xhr) { + // xhr.responseXML will throw Exception "InvalidStateError" or "DOMException" + // See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML. + try { + if (xhr.responseType === "document") { + return xhr.responseXML; + } + var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === "parsererror"; + if (xhr.responseType === "" && !firefoxBugTakenEffect) { + return xhr.responseXML; + } + } catch (e) {} + return null; + } + function noop() {} + lib.default = default_1; + + /** + * @file text-track.js + */ + + /** + * Takes a webvtt file contents and parses it into cues + * + * @param {string} srcContent + * webVTT file contents + * + * @param {TextTrack} track + * TextTrack to add cues to. Cues come from the srcContent. + * + * @private + */ + const parseCues = function (srcContent, track) { + const parser = new window.WebVTT.Parser(window, window.vttjs, window.WebVTT.StringDecoder()); + const errors = []; + parser.oncue = function (cue) { + track.addCue(cue); + }; + parser.onparsingerror = function (error) { + errors.push(error); + }; + parser.onflush = function () { + track.trigger({ + type: 'loadeddata', + target: track + }); + }; + parser.parse(srcContent); + if (errors.length > 0) { + if (window.console && window.console.groupCollapsed) { + window.console.groupCollapsed(`Text Track parsing errors for ${track.src}`); + } + errors.forEach(error => log.error(error)); + if (window.console && window.console.groupEnd) { + window.console.groupEnd(); + } + } + parser.flush(); + }; + + /** + * Load a `TextTrack` from a specified url. + * + * @param {string} src + * Url to load track from. + * + * @param {TextTrack} track + * Track to add cues to. Comes from the content at the end of `url`. + * + * @private + */ + const loadTrack = function (src, track) { + const opts = { + uri: src + }; + const crossOrigin = isCrossOrigin(src); + if (crossOrigin) { + opts.cors = crossOrigin; + } + const withCredentials = track.tech_.crossOrigin() === 'use-credentials'; + if (withCredentials) { + opts.withCredentials = withCredentials; + } + lib(opts, bind_(this, function (err, response, responseBody) { + if (err) { + return log.error(err, response); + } + track.loaded_ = true; + + // Make sure that vttjs has loaded, otherwise, wait till it finished loading + // NOTE: this is only used for the alt/video.novtt.js build + if (typeof window.WebVTT !== 'function') { + if (track.tech_) { + // to prevent use before define eslint error, we define loadHandler + // as a let here + track.tech_.any(['vttjsloaded', 'vttjserror'], event => { + if (event.type === 'vttjserror') { + log.error(`vttjs failed to load, stopping trying to process ${track.src}`); + return; + } + return parseCues(responseBody, track); + }); + } + } else { + parseCues(responseBody, track); + } + })); + }; + + /** + * A representation of a single `TextTrack`. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack} + * @extends Track + */ + class TextTrack extends Track { + /** + * Create an instance of this class. + * + * @param {Object} options={} + * Object of option names and values + * + * @param { import('../tech/tech').default } options.tech + * A reference to the tech that owns this TextTrack. + * + * @param {TextTrack~Kind} [options.kind='subtitles'] + * A valid text track kind. + * + * @param {TextTrack~Mode} [options.mode='disabled'] + * A valid text track mode. + * + * @param {string} [options.id='vjs_track_' + Guid.newGUID()] + * A unique id for this TextTrack. + * + * @param {string} [options.label=''] + * The menu label for this track. + * + * @param {string} [options.language=''] + * A valid two character language code. + * + * @param {string} [options.srclang=''] + * A valid two character language code. An alternative, but deprioritized + * version of `options.language` + * + * @param {string} [options.src] + * A url to TextTrack cues. + * + * @param {boolean} [options.default] + * If this track should default to on or off. + */ + constructor(options = {}) { + if (!options.tech) { + throw new Error('A tech was not provided.'); + } + const settings = merge(options, { + kind: TextTrackKind[options.kind] || 'subtitles', + language: options.language || options.srclang || '' + }); + let mode = TextTrackMode[settings.mode] || 'disabled'; + const default_ = settings.default; + if (settings.kind === 'metadata' || settings.kind === 'chapters') { + mode = 'hidden'; + } + super(settings); + this.tech_ = settings.tech; + this.cues_ = []; + this.activeCues_ = []; + this.preload_ = this.tech_.preloadTextTracks !== false; + const cues = new TextTrackCueList(this.cues_); + const activeCues = new TextTrackCueList(this.activeCues_); + let changed = false; + this.timeupdateHandler = bind_(this, function (event = {}) { + if (this.tech_.isDisposed()) { + return; + } + if (!this.tech_.isReady_) { + if (event.type !== 'timeupdate') { + this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler); + } + return; + } + + // Accessing this.activeCues for the side-effects of updating itself + // due to its nature as a getter function. Do not remove or cues will + // stop updating! + // Use the setter to prevent deletion from uglify (pure_getters rule) + this.activeCues = this.activeCues; + if (changed) { + this.trigger('cuechange'); + changed = false; + } + if (event.type !== 'timeupdate') { + this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler); + } + }); + const disposeHandler = () => { + this.stopTracking(); + }; + this.tech_.one('dispose', disposeHandler); + if (mode !== 'disabled') { + this.startTracking(); + } + Object.defineProperties(this, { + /** + * @memberof TextTrack + * @member {boolean} default + * If this track was set to be on or off by default. Cannot be changed after + * creation. + * @instance + * + * @readonly + */ + default: { + get() { + return default_; + }, + set() {} + }, + /** + * @memberof TextTrack + * @member {string} mode + * Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will + * not be set if setting to an invalid mode. + * @instance + * + * @fires TextTrack#modechange + */ + mode: { + get() { + return mode; + }, + set(newMode) { + if (!TextTrackMode[newMode]) { + return; + } + if (mode === newMode) { + return; + } + mode = newMode; + if (!this.preload_ && mode !== 'disabled' && this.cues.length === 0) { + // On-demand load. + loadTrack(this.src, this); + } + this.stopTracking(); + if (mode !== 'disabled') { + this.startTracking(); + } + /** + * An event that fires when mode changes on this track. This allows + * the TextTrackList that holds this track to act accordingly. + * + * > Note: This is not part of the spec! + * + * @event TextTrack#modechange + * @type {Event} + */ + this.trigger('modechange'); + } + }, + /** + * @memberof TextTrack + * @member {TextTrackCueList} cues + * The text track cue list for this TextTrack. + * @instance + */ + cues: { + get() { + if (!this.loaded_) { + return null; + } + return cues; + }, + set() {} + }, + /** + * @memberof TextTrack + * @member {TextTrackCueList} activeCues + * The list text track cues that are currently active for this TextTrack. + * @instance + */ + activeCues: { + get() { + if (!this.loaded_) { + return null; + } + + // nothing to do + if (this.cues.length === 0) { + return activeCues; + } + const ct = this.tech_.currentTime(); + const active = []; + for (let i = 0, l = this.cues.length; i < l; i++) { + const cue = this.cues[i]; + if (cue.startTime <= ct && cue.endTime >= ct) { + active.push(cue); + } + } + changed = false; + if (active.length !== this.activeCues_.length) { + changed = true; + } else { + for (let i = 0; i < active.length; i++) { + if (this.activeCues_.indexOf(active[i]) === -1) { + changed = true; + } + } + } + this.activeCues_ = active; + activeCues.setCues_(this.activeCues_); + return activeCues; + }, + // /!\ Keep this setter empty (see the timeupdate handler above) + set() {} + } + }); + if (settings.src) { + this.src = settings.src; + if (!this.preload_) { + // Tracks will load on-demand. + // Act like we're loaded for other purposes. + this.loaded_ = true; + } + if (this.preload_ || settings.kind !== 'subtitles' && settings.kind !== 'captions') { + loadTrack(this.src, this); + } + } else { + this.loaded_ = true; + } + } + startTracking() { + // More precise cues based on requestVideoFrameCallback with a requestAnimationFram fallback + this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler); + // Also listen to timeupdate in case rVFC/rAF stops (window in background, audio in video el) + this.tech_.on('timeupdate', this.timeupdateHandler); + } + stopTracking() { + if (this.rvf_) { + this.tech_.cancelVideoFrameCallback(this.rvf_); + this.rvf_ = undefined; + } + this.tech_.off('timeupdate', this.timeupdateHandler); + } + + /** + * Add a cue to the internal list of cues. + * + * @param {TextTrack~Cue} cue + * The cue to add to our internal list + */ + addCue(originalCue) { + let cue = originalCue; + + // Testing if the cue is a VTTCue in a way that survives minification + if (!('getCueAsHTML' in cue)) { + cue = new window.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text); + for (const prop in originalCue) { + if (!(prop in cue)) { + cue[prop] = originalCue[prop]; + } + } + + // make sure that `id` is copied over + cue.id = originalCue.id; + cue.originalCue_ = originalCue; + } + const tracks = this.tech_.textTracks(); + for (let i = 0; i < tracks.length; i++) { + if (tracks[i] !== this) { + tracks[i].removeCue(cue); + } + } + this.cues_.push(cue); + this.cues.setCues_(this.cues_); + } + + /** + * Remove a cue from our internal list + * + * @param {TextTrack~Cue} removeCue + * The cue to remove from our internal list + */ + removeCue(removeCue) { + let i = this.cues_.length; + while (i--) { + const cue = this.cues_[i]; + if (cue === removeCue || cue.originalCue_ && cue.originalCue_ === removeCue) { + this.cues_.splice(i, 1); + this.cues.setCues_(this.cues_); + break; + } + } + } + } + + /** + * cuechange - One or more cues in the track have become active or stopped being active. + * @protected + */ + TextTrack.prototype.allowedEvents_ = { + cuechange: 'cuechange' + }; + + /** + * A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList} + * only one `AudioTrack` in the list will be enabled at a time. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack} + * @extends Track + */ + class AudioTrack extends Track { + /** + * Create an instance of this class. + * + * @param {Object} [options={}] + * Object of option names and values + * + * @param {AudioTrack~Kind} [options.kind=''] + * A valid audio track kind + * + * @param {string} [options.id='vjs_track_' + Guid.newGUID()] + * A unique id for this AudioTrack. + * + * @param {string} [options.label=''] + * The menu label for this track. + * + * @param {string} [options.language=''] + * A valid two character language code. + * + * @param {boolean} [options.enabled] + * If this track is the one that is currently playing. If this track is part of + * an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled. + */ + constructor(options = {}) { + const settings = merge(options, { + kind: AudioTrackKind[options.kind] || '' + }); + super(settings); + let enabled = false; + + /** + * @memberof AudioTrack + * @member {boolean} enabled + * If this `AudioTrack` is enabled or not. When setting this will + * fire {@link AudioTrack#enabledchange} if the state of enabled is changed. + * @instance + * + * @fires VideoTrack#selectedchange + */ + Object.defineProperty(this, 'enabled', { + get() { + return enabled; + }, + set(newEnabled) { + // an invalid or unchanged value + if (typeof newEnabled !== 'boolean' || newEnabled === enabled) { + return; + } + enabled = newEnabled; + + /** + * An event that fires when enabled changes on this track. This allows + * the AudioTrackList that holds this track to act accordingly. + * + * > Note: This is not part of the spec! Native tracks will do + * this internally without an event. + * + * @event AudioTrack#enabledchange + * @type {Event} + */ + this.trigger('enabledchange'); + } + }); + + // if the user sets this track to selected then + // set selected to that true value otherwise + // we keep it false + if (settings.enabled) { + this.enabled = settings.enabled; + } + this.loaded_ = true; + } + } + + /** + * A representation of a single `VideoTrack`. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack} + * @extends Track + */ + class VideoTrack extends Track { + /** + * Create an instance of this class. + * + * @param {Object} [options={}] + * Object of option names and values + * + * @param {string} [options.kind=''] + * A valid {@link VideoTrack~Kind} + * + * @param {string} [options.id='vjs_track_' + Guid.newGUID()] + * A unique id for this AudioTrack. + * + * @param {string} [options.label=''] + * The menu label for this track. + * + * @param {string} [options.language=''] + * A valid two character language code. + * + * @param {boolean} [options.selected] + * If this track is the one that is currently playing. + */ + constructor(options = {}) { + const settings = merge(options, { + kind: VideoTrackKind[options.kind] || '' + }); + super(settings); + let selected = false; + + /** + * @memberof VideoTrack + * @member {boolean} selected + * If this `VideoTrack` is selected or not. When setting this will + * fire {@link VideoTrack#selectedchange} if the state of selected changed. + * @instance + * + * @fires VideoTrack#selectedchange + */ + Object.defineProperty(this, 'selected', { + get() { + return selected; + }, + set(newSelected) { + // an invalid or unchanged value + if (typeof newSelected !== 'boolean' || newSelected === selected) { + return; + } + selected = newSelected; + + /** + * An event that fires when selected changes on this track. This allows + * the VideoTrackList that holds this track to act accordingly. + * + * > Note: This is not part of the spec! Native tracks will do + * this internally without an event. + * + * @event VideoTrack#selectedchange + * @type {Event} + */ + this.trigger('selectedchange'); + } + }); + + // if the user sets this track to selected then + // set selected to that true value otherwise + // we keep it false + if (settings.selected) { + this.selected = settings.selected; + } + } + } + + /** + * @file html-track-element.js + */ + + /** + * A single track represented in the DOM. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement} + * @extends EventTarget + */ + class HTMLTrackElement extends EventTarget { + /** + * Create an instance of this class. + * + * @param {Object} options={} + * Object of option names and values + * + * @param { import('../tech/tech').default } options.tech + * A reference to the tech that owns this HTMLTrackElement. + * + * @param {TextTrack~Kind} [options.kind='subtitles'] + * A valid text track kind. + * + * @param {TextTrack~Mode} [options.mode='disabled'] + * A valid text track mode. + * + * @param {string} [options.id='vjs_track_' + Guid.newGUID()] + * A unique id for this TextTrack. + * + * @param {string} [options.label=''] + * The menu label for this track. + * + * @param {string} [options.language=''] + * A valid two character language code. + * + * @param {string} [options.srclang=''] + * A valid two character language code. An alternative, but deprioritized + * version of `options.language` + * + * @param {string} [options.src] + * A url to TextTrack cues. + * + * @param {boolean} [options.default] + * If this track should default to on or off. + */ + constructor(options = {}) { + super(); + let readyState; + const track = new TextTrack(options); + this.kind = track.kind; + this.src = track.src; + this.srclang = track.language; + this.label = track.label; + this.default = track.default; + Object.defineProperties(this, { + /** + * @memberof HTMLTrackElement + * @member {HTMLTrackElement~ReadyState} readyState + * The current ready state of the track element. + * @instance + */ + readyState: { + get() { + return readyState; + } + }, + /** + * @memberof HTMLTrackElement + * @member {TextTrack} track + * The underlying TextTrack object. + * @instance + * + */ + track: { + get() { + return track; + } + } + }); + readyState = HTMLTrackElement.NONE; + + /** + * @listens TextTrack#loadeddata + * @fires HTMLTrackElement#load + */ + track.addEventListener('loadeddata', () => { + readyState = HTMLTrackElement.LOADED; + this.trigger({ + type: 'load', + target: this + }); + }); + } + } + + /** + * @protected + */ + HTMLTrackElement.prototype.allowedEvents_ = { + load: 'load' + }; + + /** + * The text track not loaded state. + * + * @type {number} + * @static + */ + HTMLTrackElement.NONE = 0; + + /** + * The text track loading state. + * + * @type {number} + * @static + */ + HTMLTrackElement.LOADING = 1; + + /** + * The text track loaded state. + * + * @type {number} + * @static + */ + HTMLTrackElement.LOADED = 2; + + /** + * The text track failed to load state. + * + * @type {number} + * @static + */ + HTMLTrackElement.ERROR = 3; + + /* + * This file contains all track properties that are used in + * player.js, tech.js, html5.js and possibly other techs in the future. + */ + + const NORMAL = { + audio: { + ListClass: AudioTrackList, + TrackClass: AudioTrack, + capitalName: 'Audio' + }, + video: { + ListClass: VideoTrackList, + TrackClass: VideoTrack, + capitalName: 'Video' + }, + text: { + ListClass: TextTrackList, + TrackClass: TextTrack, + capitalName: 'Text' + } + }; + Object.keys(NORMAL).forEach(function (type) { + NORMAL[type].getterName = `${type}Tracks`; + NORMAL[type].privateName = `${type}Tracks_`; + }); + const REMOTE = { + remoteText: { + ListClass: TextTrackList, + TrackClass: TextTrack, + capitalName: 'RemoteText', + getterName: 'remoteTextTracks', + privateName: 'remoteTextTracks_' + }, + remoteTextEl: { + ListClass: HtmlTrackElementList, + TrackClass: HTMLTrackElement, + capitalName: 'RemoteTextTrackEls', + getterName: 'remoteTextTrackEls', + privateName: 'remoteTextTrackEls_' + } + }; + const ALL = Object.assign({}, NORMAL, REMOTE); + REMOTE.names = Object.keys(REMOTE); + NORMAL.names = Object.keys(NORMAL); + ALL.names = [].concat(REMOTE.names).concat(NORMAL.names); + + var minDoc = {}; + + var topLevel = typeof commonjsGlobal !== 'undefined' ? commonjsGlobal : typeof window !== 'undefined' ? window : {}; + var doccy; + if (typeof document !== 'undefined') { + doccy = document; + } else { + doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4']; + if (!doccy) { + doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc; + } + } + var document_1 = doccy; + + /** + * Copyright 2013 vtt.js Contributors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ + /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ + + var _objCreate = Object.create || function () { + function F() {} + return function (o) { + if (arguments.length !== 1) { + throw new Error('Object.create shim only accepts one parameter.'); + } + F.prototype = o; + return new F(); + }; + }(); + + // Creates a new ParserError object from an errorData object. The errorData + // object should have default code and message properties. The default message + // property can be overriden by passing in a message parameter. + // See ParsingError.Errors below for acceptable errors. + function ParsingError(errorData, message) { + this.name = "ParsingError"; + this.code = errorData.code; + this.message = message || errorData.message; + } + ParsingError.prototype = _objCreate(Error.prototype); + ParsingError.prototype.constructor = ParsingError; + + // ParsingError metadata for acceptable ParsingErrors. + ParsingError.Errors = { + BadSignature: { + code: 0, + message: "Malformed WebVTT signature." + }, + BadTimeStamp: { + code: 1, + message: "Malformed time stamp." + } + }; + + // Try to parse input as a time stamp. + function parseTimeStamp(input) { + function computeSeconds(h, m, s, f) { + return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000; + } + var m = input.match(/^(\d+):(\d{1,2})(:\d{1,2})?\.(\d{3})/); + if (!m) { + return null; + } + if (m[3]) { + // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds] + return computeSeconds(m[1], m[2], m[3].replace(":", ""), m[4]); + } else if (m[1] > 59) { + // Timestamp takes the form of [hours]:[minutes].[milliseconds] + // First position is hours as it's over 59. + return computeSeconds(m[1], m[2], 0, m[4]); + } else { + // Timestamp takes the form of [minutes]:[seconds].[milliseconds] + return computeSeconds(0, m[1], m[2], m[4]); + } + } + + // A settings object holds key/value pairs and will ignore anything but the first + // assignment to a specific key. + function Settings() { + this.values = _objCreate(null); + } + Settings.prototype = { + // Only accept the first assignment to any key. + set: function (k, v) { + if (!this.get(k) && v !== "") { + this.values[k] = v; + } + }, + // Return the value for a key, or a default value. + // If 'defaultKey' is passed then 'dflt' is assumed to be an object with + // a number of possible default values as properties where 'defaultKey' is + // the key of the property that will be chosen; otherwise it's assumed to be + // a single value. + get: function (k, dflt, defaultKey) { + if (defaultKey) { + return this.has(k) ? this.values[k] : dflt[defaultKey]; + } + return this.has(k) ? this.values[k] : dflt; + }, + // Check whether we have a value for a key. + has: function (k) { + return k in this.values; + }, + // Accept a setting if its one of the given alternatives. + alt: function (k, v, a) { + for (var n = 0; n < a.length; ++n) { + if (v === a[n]) { + this.set(k, v); + break; + } + } + }, + // Accept a setting if its a valid (signed) integer. + integer: function (k, v) { + if (/^-?\d+$/.test(v)) { + // integer + this.set(k, parseInt(v, 10)); + } + }, + // Accept a setting if its a valid percentage. + percent: function (k, v) { + if (v.match(/^([\d]{1,3})(\.[\d]*)?%$/)) { + v = parseFloat(v); + if (v >= 0 && v <= 100) { + this.set(k, v); + return true; + } + } + return false; + } + }; + + // Helper function to parse input into groups separated by 'groupDelim', and + // interprete each group as a key/value pair separated by 'keyValueDelim'. + function parseOptions(input, callback, keyValueDelim, groupDelim) { + var groups = groupDelim ? input.split(groupDelim) : [input]; + for (var i in groups) { + if (typeof groups[i] !== "string") { + continue; + } + var kv = groups[i].split(keyValueDelim); + if (kv.length !== 2) { + continue; + } + var k = kv[0].trim(); + var v = kv[1].trim(); + callback(k, v); + } + } + function parseCue(input, cue, regionList) { + // Remember the original input if we need to throw an error. + var oInput = input; + // 4.1 WebVTT timestamp + function consumeTimeStamp() { + var ts = parseTimeStamp(input); + if (ts === null) { + throw new ParsingError(ParsingError.Errors.BadTimeStamp, "Malformed timestamp: " + oInput); + } + // Remove time stamp from input. + input = input.replace(/^[^\sa-zA-Z-]+/, ""); + return ts; + } + + // 4.4.2 WebVTT cue settings + function consumeCueSettings(input, cue) { + var settings = new Settings(); + parseOptions(input, function (k, v) { + switch (k) { + case "region": + // Find the last region we parsed with the same region id. + for (var i = regionList.length - 1; i >= 0; i--) { + if (regionList[i].id === v) { + settings.set(k, regionList[i].region); + break; + } + } + break; + case "vertical": + settings.alt(k, v, ["rl", "lr"]); + break; + case "line": + var vals = v.split(","), + vals0 = vals[0]; + settings.integer(k, vals0); + settings.percent(k, vals0) ? settings.set("snapToLines", false) : null; + settings.alt(k, vals0, ["auto"]); + if (vals.length === 2) { + settings.alt("lineAlign", vals[1], ["start", "center", "end"]); + } + break; + case "position": + vals = v.split(","); + settings.percent(k, vals[0]); + if (vals.length === 2) { + settings.alt("positionAlign", vals[1], ["start", "center", "end"]); + } + break; + case "size": + settings.percent(k, v); + break; + case "align": + settings.alt(k, v, ["start", "center", "end", "left", "right"]); + break; + } + }, /:/, /\s/); + + // Apply default values for any missing fields. + cue.region = settings.get("region", null); + cue.vertical = settings.get("vertical", ""); + try { + cue.line = settings.get("line", "auto"); + } catch (e) {} + cue.lineAlign = settings.get("lineAlign", "start"); + cue.snapToLines = settings.get("snapToLines", true); + cue.size = settings.get("size", 100); + // Safari still uses the old middle value and won't accept center + try { + cue.align = settings.get("align", "center"); + } catch (e) { + cue.align = settings.get("align", "middle"); + } + try { + cue.position = settings.get("position", "auto"); + } catch (e) { + cue.position = settings.get("position", { + start: 0, + left: 0, + center: 50, + middle: 50, + end: 100, + right: 100 + }, cue.align); + } + cue.positionAlign = settings.get("positionAlign", { + start: "start", + left: "start", + center: "center", + middle: "center", + end: "end", + right: "end" + }, cue.align); + } + function skipWhitespace() { + input = input.replace(/^\s+/, ""); + } + + // 4.1 WebVTT cue timings. + skipWhitespace(); + cue.startTime = consumeTimeStamp(); // (1) collect cue start time + skipWhitespace(); + if (input.substr(0, 3) !== "-->") { + // (3) next characters must match "-->" + throw new ParsingError(ParsingError.Errors.BadTimeStamp, "Malformed time stamp (time stamps must be separated by '-->'): " + oInput); + } + input = input.substr(3); + skipWhitespace(); + cue.endTime = consumeTimeStamp(); // (5) collect cue end time + + // 4.1 WebVTT cue settings list. + skipWhitespace(); + consumeCueSettings(input, cue); + } + + // When evaluating this file as part of a Webpack bundle for server + // side rendering, `document` is an empty object. + var TEXTAREA_ELEMENT = document_1.createElement && document_1.createElement("textarea"); + var TAG_NAME = { + c: "span", + i: "i", + b: "b", + u: "u", + ruby: "ruby", + rt: "rt", + v: "span", + lang: "span" + }; + + // 5.1 default text color + // 5.2 default text background color is equivalent to text color with bg_ prefix + var DEFAULT_COLOR_CLASS = { + white: 'rgba(255,255,255,1)', + lime: 'rgba(0,255,0,1)', + cyan: 'rgba(0,255,255,1)', + red: 'rgba(255,0,0,1)', + yellow: 'rgba(255,255,0,1)', + magenta: 'rgba(255,0,255,1)', + blue: 'rgba(0,0,255,1)', + black: 'rgba(0,0,0,1)' + }; + var TAG_ANNOTATION = { + v: "title", + lang: "lang" + }; + var NEEDS_PARENT = { + rt: "ruby" + }; + + // Parse content into a document fragment. + function parseContent(window, input) { + function nextToken() { + // Check for end-of-string. + if (!input) { + return null; + } + + // Consume 'n' characters from the input. + function consume(result) { + input = input.substr(result.length); + return result; + } + var m = input.match(/^([^<]*)(<[^>]*>?)?/); + // If there is some text before the next tag, return it, otherwise return + // the tag. + return consume(m[1] ? m[1] : m[2]); + } + function unescape(s) { + TEXTAREA_ELEMENT.innerHTML = s; + s = TEXTAREA_ELEMENT.textContent; + TEXTAREA_ELEMENT.textContent = ""; + return s; + } + function shouldAdd(current, element) { + return !NEEDS_PARENT[element.localName] || NEEDS_PARENT[element.localName] === current.localName; + } + + // Create an element for this tag. + function createElement(type, annotation) { + var tagName = TAG_NAME[type]; + if (!tagName) { + return null; + } + var element = window.document.createElement(tagName); + var name = TAG_ANNOTATION[type]; + if (name && annotation) { + element[name] = annotation.trim(); + } + return element; + } + var rootDiv = window.document.createElement("div"), + current = rootDiv, + t, + tagStack = []; + while ((t = nextToken()) !== null) { + if (t[0] === '<') { + if (t[1] === "/") { + // If the closing tag matches, move back up to the parent node. + if (tagStack.length && tagStack[tagStack.length - 1] === t.substr(2).replace(">", "")) { + tagStack.pop(); + current = current.parentNode; + } + // Otherwise just ignore the end tag. + continue; + } + var ts = parseTimeStamp(t.substr(1, t.length - 2)); + var node; + if (ts) { + // Timestamps are lead nodes as well. + node = window.document.createProcessingInstruction("timestamp", ts); + current.appendChild(node); + continue; + } + var m = t.match(/^<([^.\s/0-9>]+)(\.[^\s\\>]+)?([^>\\]+)?(\\?)>?$/); + // If we can't parse the tag, skip to the next tag. + if (!m) { + continue; + } + // Try to construct an element, and ignore the tag if we couldn't. + node = createElement(m[1], m[3]); + if (!node) { + continue; + } + // Determine if the tag should be added based on the context of where it + // is placed in the cuetext. + if (!shouldAdd(current, node)) { + continue; + } + // Set the class list (as a list of classes, separated by space). + if (m[2]) { + var classes = m[2].split('.'); + classes.forEach(function (cl) { + var bgColor = /^bg_/.test(cl); + // slice out `bg_` if it's a background color + var colorName = bgColor ? cl.slice(3) : cl; + if (DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)) { + var propName = bgColor ? 'background-color' : 'color'; + var propValue = DEFAULT_COLOR_CLASS[colorName]; + node.style[propName] = propValue; + } + }); + node.className = classes.join(' '); + } + // Append the node to the current node, and enter the scope of the new + // node. + tagStack.push(m[1]); + current.appendChild(node); + current = node; + continue; + } + + // Text nodes are leaf nodes. + current.appendChild(window.document.createTextNode(unescape(t))); + } + return rootDiv; + } + + // This is a list of all the Unicode characters that have a strong + // right-to-left category. What this means is that these characters are + // written right-to-left for sure. It was generated by pulling all the strong + // right-to-left characters out of the Unicode data table. That table can + // found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt + var strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6], [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d], [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6], [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5], [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815], [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858], [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f], [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c], [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1], [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc], [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808], [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855], [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f], [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13], [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58], [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72], [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f], [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32], [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42], [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f], [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59], [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62], [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77], [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b], [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]]; + function isStrongRTLChar(charCode) { + for (var i = 0; i < strongRTLRanges.length; i++) { + var currentRange = strongRTLRanges[i]; + if (charCode >= currentRange[0] && charCode <= currentRange[1]) { + return true; + } + } + return false; + } + function determineBidi(cueDiv) { + var nodeStack = [], + text = "", + charCode; + if (!cueDiv || !cueDiv.childNodes) { + return "ltr"; + } + function pushNodes(nodeStack, node) { + for (var i = node.childNodes.length - 1; i >= 0; i--) { + nodeStack.push(node.childNodes[i]); + } + } + function nextTextNode(nodeStack) { + if (!nodeStack || !nodeStack.length) { + return null; + } + var node = nodeStack.pop(), + text = node.textContent || node.innerText; + if (text) { + // TODO: This should match all unicode type B characters (paragraph + // separator characters). See issue #115. + var m = text.match(/^.*(\n|\r)/); + if (m) { + nodeStack.length = 0; + return m[0]; + } + return text; + } + if (node.tagName === "ruby") { + return nextTextNode(nodeStack); + } + if (node.childNodes) { + pushNodes(nodeStack, node); + return nextTextNode(nodeStack); + } + } + pushNodes(nodeStack, cueDiv); + while (text = nextTextNode(nodeStack)) { + for (var i = 0; i < text.length; i++) { + charCode = text.charCodeAt(i); + if (isStrongRTLChar(charCode)) { + return "rtl"; + } + } + } + return "ltr"; + } + function computeLinePos(cue) { + if (typeof cue.line === "number" && (cue.snapToLines || cue.line >= 0 && cue.line <= 100)) { + return cue.line; + } + if (!cue.track || !cue.track.textTrackList || !cue.track.textTrackList.mediaElement) { + return -1; + } + var track = cue.track, + trackList = track.textTrackList, + count = 0; + for (var i = 0; i < trackList.length && trackList[i] !== track; i++) { + if (trackList[i].mode === "showing") { + count++; + } + } + return ++count * -1; + } + function StyleBox() {} + + // Apply styles to a div. If there is no div passed then it defaults to the + // div on 'this'. + StyleBox.prototype.applyStyles = function (styles, div) { + div = div || this.div; + for (var prop in styles) { + if (styles.hasOwnProperty(prop)) { + div.style[prop] = styles[prop]; + } + } + }; + StyleBox.prototype.formatStyle = function (val, unit) { + return val === 0 ? 0 : val + unit; + }; + + // Constructs the computed display state of the cue (a div). Places the div + // into the overlay which should be a block level element (usually a div). + function CueStyleBox(window, cue, styleOptions) { + StyleBox.call(this); + this.cue = cue; + + // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will + // have inline positioning and will function as the cue background box. + this.cueDiv = parseContent(window, cue.text); + var styles = { + color: "rgba(255, 255, 255, 1)", + backgroundColor: "rgba(0, 0, 0, 0.8)", + position: "relative", + left: 0, + right: 0, + top: 0, + bottom: 0, + display: "inline", + writingMode: cue.vertical === "" ? "horizontal-tb" : cue.vertical === "lr" ? "vertical-lr" : "vertical-rl", + unicodeBidi: "plaintext" + }; + this.applyStyles(styles, this.cueDiv); + + // Create an absolutely positioned div that will be used to position the cue + // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS + // mirrors of them except middle instead of center on Safari. + this.div = window.document.createElement("div"); + styles = { + direction: determineBidi(this.cueDiv), + writingMode: cue.vertical === "" ? "horizontal-tb" : cue.vertical === "lr" ? "vertical-lr" : "vertical-rl", + unicodeBidi: "plaintext", + textAlign: cue.align === "middle" ? "center" : cue.align, + font: styleOptions.font, + whiteSpace: "pre-line", + position: "absolute" + }; + this.applyStyles(styles); + this.div.appendChild(this.cueDiv); + + // Calculate the distance from the reference edge of the viewport to the text + // position of the cue box. The reference edge will be resolved later when + // the box orientation styles are applied. + var textPos = 0; + switch (cue.positionAlign) { + case "start": + case "line-left": + textPos = cue.position; + break; + case "center": + textPos = cue.position - cue.size / 2; + break; + case "end": + case "line-right": + textPos = cue.position - cue.size; + break; + } + + // Horizontal box orientation; textPos is the distance from the left edge of the + // area to the left edge of the box and cue.size is the distance extending to + // the right from there. + if (cue.vertical === "") { + this.applyStyles({ + left: this.formatStyle(textPos, "%"), + width: this.formatStyle(cue.size, "%") + }); + // Vertical box orientation; textPos is the distance from the top edge of the + // area to the top edge of the box and cue.size is the height extending + // downwards from there. + } else { + this.applyStyles({ + top: this.formatStyle(textPos, "%"), + height: this.formatStyle(cue.size, "%") + }); + } + this.move = function (box) { + this.applyStyles({ + top: this.formatStyle(box.top, "px"), + bottom: this.formatStyle(box.bottom, "px"), + left: this.formatStyle(box.left, "px"), + right: this.formatStyle(box.right, "px"), + height: this.formatStyle(box.height, "px"), + width: this.formatStyle(box.width, "px") + }); + }; + } + CueStyleBox.prototype = _objCreate(StyleBox.prototype); + CueStyleBox.prototype.constructor = CueStyleBox; + + // Represents the co-ordinates of an Element in a way that we can easily + // compute things with such as if it overlaps or intersects with another Element. + // Can initialize it with either a StyleBox or another BoxPosition. + function BoxPosition(obj) { + // Either a BoxPosition was passed in and we need to copy it, or a StyleBox + // was passed in and we need to copy the results of 'getBoundingClientRect' + // as the object returned is readonly. All co-ordinate values are in reference + // to the viewport origin (top left). + var lh, height, width, top; + if (obj.div) { + height = obj.div.offsetHeight; + width = obj.div.offsetWidth; + top = obj.div.offsetTop; + var rects = (rects = obj.div.childNodes) && (rects = rects[0]) && rects.getClientRects && rects.getClientRects(); + obj = obj.div.getBoundingClientRect(); + // In certain cases the outter div will be slightly larger then the sum of + // the inner div's lines. This could be due to bold text, etc, on some platforms. + // In this case we should get the average line height and use that. This will + // result in the desired behaviour. + lh = rects ? Math.max(rects[0] && rects[0].height || 0, obj.height / rects.length) : 0; + } + this.left = obj.left; + this.right = obj.right; + this.top = obj.top || top; + this.height = obj.height || height; + this.bottom = obj.bottom || top + (obj.height || height); + this.width = obj.width || width; + this.lineHeight = lh !== undefined ? lh : obj.lineHeight; + } + + // Move the box along a particular axis. Optionally pass in an amount to move + // the box. If no amount is passed then the default is the line height of the + // box. + BoxPosition.prototype.move = function (axis, toMove) { + toMove = toMove !== undefined ? toMove : this.lineHeight; + switch (axis) { + case "+x": + this.left += toMove; + this.right += toMove; + break; + case "-x": + this.left -= toMove; + this.right -= toMove; + break; + case "+y": + this.top += toMove; + this.bottom += toMove; + break; + case "-y": + this.top -= toMove; + this.bottom -= toMove; + break; + } + }; + + // Check if this box overlaps another box, b2. + BoxPosition.prototype.overlaps = function (b2) { + return this.left < b2.right && this.right > b2.left && this.top < b2.bottom && this.bottom > b2.top; + }; + + // Check if this box overlaps any other boxes in boxes. + BoxPosition.prototype.overlapsAny = function (boxes) { + for (var i = 0; i < boxes.length; i++) { + if (this.overlaps(boxes[i])) { + return true; + } + } + return false; + }; + + // Check if this box is within another box. + BoxPosition.prototype.within = function (container) { + return this.top >= container.top && this.bottom <= container.bottom && this.left >= container.left && this.right <= container.right; + }; + + // Check if this box is entirely within the container or it is overlapping + // on the edge opposite of the axis direction passed. For example, if "+x" is + // passed and the box is overlapping on the left edge of the container, then + // return true. + BoxPosition.prototype.overlapsOppositeAxis = function (container, axis) { + switch (axis) { + case "+x": + return this.left < container.left; + case "-x": + return this.right > container.right; + case "+y": + return this.top < container.top; + case "-y": + return this.bottom > container.bottom; + } + }; + + // Find the percentage of the area that this box is overlapping with another + // box. + BoxPosition.prototype.intersectPercentage = function (b2) { + var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)), + y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)), + intersectArea = x * y; + return intersectArea / (this.height * this.width); + }; + + // Convert the positions from this box to CSS compatible positions using + // the reference container's positions. This has to be done because this + // box's positions are in reference to the viewport origin, whereas, CSS + // values are in referecne to their respective edges. + BoxPosition.prototype.toCSSCompatValues = function (reference) { + return { + top: this.top - reference.top, + bottom: reference.bottom - this.bottom, + left: this.left - reference.left, + right: reference.right - this.right, + height: this.height, + width: this.width + }; + }; + + // Get an object that represents the box's position without anything extra. + // Can pass a StyleBox, HTMLElement, or another BoxPositon. + BoxPosition.getSimpleBoxPosition = function (obj) { + var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0; + var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0; + var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0; + obj = obj.div ? obj.div.getBoundingClientRect() : obj.tagName ? obj.getBoundingClientRect() : obj; + var ret = { + left: obj.left, + right: obj.right, + top: obj.top || top, + height: obj.height || height, + bottom: obj.bottom || top + (obj.height || height), + width: obj.width || width + }; + return ret; + }; + + // Move a StyleBox to its specified, or next best, position. The containerBox + // is the box that contains the StyleBox, such as a div. boxPositions are + // a list of other boxes that the styleBox can't overlap with. + function moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) { + // Find the best position for a cue box, b, on the video. The axis parameter + // is a list of axis, the order of which, it will move the box along. For example: + // Passing ["+x", "-x"] will move the box first along the x axis in the positive + // direction. If it doesn't find a good position for it there it will then move + // it along the x axis in the negative direction. + function findBestPosition(b, axis) { + var bestPosition, + specifiedPosition = new BoxPosition(b), + percentage = 1; // Highest possible so the first thing we get is better. + + for (var i = 0; i < axis.length; i++) { + while (b.overlapsOppositeAxis(containerBox, axis[i]) || b.within(containerBox) && b.overlapsAny(boxPositions)) { + b.move(axis[i]); + } + // We found a spot where we aren't overlapping anything. This is our + // best position. + if (b.within(containerBox)) { + return b; + } + var p = b.intersectPercentage(containerBox); + // If we're outside the container box less then we were on our last try + // then remember this position as the best position. + if (percentage > p) { + bestPosition = new BoxPosition(b); + percentage = p; + } + // Reset the box position to the specified position. + b = new BoxPosition(specifiedPosition); + } + return bestPosition || specifiedPosition; + } + var boxPosition = new BoxPosition(styleBox), + cue = styleBox.cue, + linePos = computeLinePos(cue), + axis = []; + + // If we have a line number to align the cue to. + if (cue.snapToLines) { + var size; + switch (cue.vertical) { + case "": + axis = ["+y", "-y"]; + size = "height"; + break; + case "rl": + axis = ["+x", "-x"]; + size = "width"; + break; + case "lr": + axis = ["-x", "+x"]; + size = "width"; + break; + } + var step = boxPosition.lineHeight, + position = step * Math.round(linePos), + maxPosition = containerBox[size] + step, + initialAxis = axis[0]; + + // If the specified intial position is greater then the max position then + // clamp the box to the amount of steps it would take for the box to + // reach the max position. + if (Math.abs(position) > maxPosition) { + position = position < 0 ? -1 : 1; + position *= Math.ceil(maxPosition / step) * step; + } + + // If computed line position returns negative then line numbers are + // relative to the bottom of the video instead of the top. Therefore, we + // need to increase our initial position by the length or width of the + // video, depending on the writing direction, and reverse our axis directions. + if (linePos < 0) { + position += cue.vertical === "" ? containerBox.height : containerBox.width; + axis = axis.reverse(); + } + + // Move the box to the specified position. This may not be its best + // position. + boxPosition.move(initialAxis, position); + } else { + // If we have a percentage line value for the cue. + var calculatedPercentage = boxPosition.lineHeight / containerBox.height * 100; + switch (cue.lineAlign) { + case "center": + linePos -= calculatedPercentage / 2; + break; + case "end": + linePos -= calculatedPercentage; + break; + } + + // Apply initial line position to the cue box. + switch (cue.vertical) { + case "": + styleBox.applyStyles({ + top: styleBox.formatStyle(linePos, "%") + }); + break; + case "rl": + styleBox.applyStyles({ + left: styleBox.formatStyle(linePos, "%") + }); + break; + case "lr": + styleBox.applyStyles({ + right: styleBox.formatStyle(linePos, "%") + }); + break; + } + axis = ["+y", "-x", "+x", "-y"]; + + // Get the box position again after we've applied the specified positioning + // to it. + boxPosition = new BoxPosition(styleBox); + } + var bestPosition = findBestPosition(boxPosition, axis); + styleBox.move(bestPosition.toCSSCompatValues(containerBox)); + } + function WebVTT$1() { + // Nothing + } + + // Helper to allow strings to be decoded instead of the default binary utf8 data. + WebVTT$1.StringDecoder = function () { + return { + decode: function (data) { + if (!data) { + return ""; + } + if (typeof data !== "string") { + throw new Error("Error - expected string data."); + } + return decodeURIComponent(encodeURIComponent(data)); + } + }; + }; + WebVTT$1.convertCueToDOMTree = function (window, cuetext) { + if (!window || !cuetext) { + return null; + } + return parseContent(window, cuetext); + }; + var FONT_SIZE_PERCENT = 0.05; + var FONT_STYLE = "sans-serif"; + var CUE_BACKGROUND_PADDING = "1.5%"; + + // Runs the processing model over the cues and regions passed to it. + // @param overlay A block level element (usually a div) that the computed cues + // and regions will be placed into. + WebVTT$1.processCues = function (window, cues, overlay) { + if (!window || !cues || !overlay) { + return null; + } + + // Remove all previous children. + while (overlay.firstChild) { + overlay.removeChild(overlay.firstChild); + } + var paddedOverlay = window.document.createElement("div"); + paddedOverlay.style.position = "absolute"; + paddedOverlay.style.left = "0"; + paddedOverlay.style.right = "0"; + paddedOverlay.style.top = "0"; + paddedOverlay.style.bottom = "0"; + paddedOverlay.style.margin = CUE_BACKGROUND_PADDING; + overlay.appendChild(paddedOverlay); + + // Determine if we need to compute the display states of the cues. This could + // be the case if a cue's state has been changed since the last computation or + // if it has not been computed yet. + function shouldCompute(cues) { + for (var i = 0; i < cues.length; i++) { + if (cues[i].hasBeenReset || !cues[i].displayState) { + return true; + } + } + return false; + } + + // We don't need to recompute the cues' display states. Just reuse them. + if (!shouldCompute(cues)) { + for (var i = 0; i < cues.length; i++) { + paddedOverlay.appendChild(cues[i].displayState); + } + return; + } + var boxPositions = [], + containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay), + fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100; + var styleOptions = { + font: fontSize + "px " + FONT_STYLE + }; + (function () { + var styleBox, cue; + for (var i = 0; i < cues.length; i++) { + cue = cues[i]; + + // Compute the intial position and styles of the cue div. + styleBox = new CueStyleBox(window, cue, styleOptions); + paddedOverlay.appendChild(styleBox.div); + + // Move the cue div to it's correct line position. + moveBoxToLinePosition(window, styleBox, containerBox, boxPositions); + + // Remember the computed div so that we don't have to recompute it later + // if we don't have too. + cue.displayState = styleBox.div; + boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox)); + } + })(); + }; + WebVTT$1.Parser = function (window, vttjs, decoder) { + if (!decoder) { + decoder = vttjs; + vttjs = {}; + } + if (!vttjs) { + vttjs = {}; + } + this.window = window; + this.vttjs = vttjs; + this.state = "INITIAL"; + this.buffer = ""; + this.decoder = decoder || new TextDecoder("utf8"); + this.regionList = []; + }; + WebVTT$1.Parser.prototype = { + // If the error is a ParsingError then report it to the consumer if + // possible. If it's not a ParsingError then throw it like normal. + reportOrThrowError: function (e) { + if (e instanceof ParsingError) { + this.onparsingerror && this.onparsingerror(e); + } else { + throw e; + } + }, + parse: function (data) { + var self = this; + + // If there is no data then we won't decode it, but will just try to parse + // whatever is in buffer already. This may occur in circumstances, for + // example when flush() is called. + if (data) { + // Try to decode the data that we received. + self.buffer += self.decoder.decode(data, { + stream: true + }); + } + function collectNextLine() { + var buffer = self.buffer; + var pos = 0; + while (pos < buffer.length && buffer[pos] !== '\r' && buffer[pos] !== '\n') { + ++pos; + } + var line = buffer.substr(0, pos); + // Advance the buffer early in case we fail below. + if (buffer[pos] === '\r') { + ++pos; + } + if (buffer[pos] === '\n') { + ++pos; + } + self.buffer = buffer.substr(pos); + return line; + } + + // 3.4 WebVTT region and WebVTT region settings syntax + function parseRegion(input) { + var settings = new Settings(); + parseOptions(input, function (k, v) { + switch (k) { + case "id": + settings.set(k, v); + break; + case "width": + settings.percent(k, v); + break; + case "lines": + settings.integer(k, v); + break; + case "regionanchor": + case "viewportanchor": + var xy = v.split(','); + if (xy.length !== 2) { + break; + } + // We have to make sure both x and y parse, so use a temporary + // settings object here. + var anchor = new Settings(); + anchor.percent("x", xy[0]); + anchor.percent("y", xy[1]); + if (!anchor.has("x") || !anchor.has("y")) { + break; + } + settings.set(k + "X", anchor.get("x")); + settings.set(k + "Y", anchor.get("y")); + break; + case "scroll": + settings.alt(k, v, ["up"]); + break; + } + }, /=/, /\s/); + + // Create the region, using default values for any values that were not + // specified. + if (settings.has("id")) { + var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)(); + region.width = settings.get("width", 100); + region.lines = settings.get("lines", 3); + region.regionAnchorX = settings.get("regionanchorX", 0); + region.regionAnchorY = settings.get("regionanchorY", 100); + region.viewportAnchorX = settings.get("viewportanchorX", 0); + region.viewportAnchorY = settings.get("viewportanchorY", 100); + region.scroll = settings.get("scroll", ""); + // Register the region. + self.onregion && self.onregion(region); + // Remember the VTTRegion for later in case we parse any VTTCues that + // reference it. + self.regionList.push({ + id: settings.get("id"), + region: region + }); + } + } + + // draft-pantos-http-live-streaming-20 + // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5 + // 3.5 WebVTT + function parseTimestampMap(input) { + var settings = new Settings(); + parseOptions(input, function (k, v) { + switch (k) { + case "MPEGT": + settings.integer(k + 'S', v); + break; + case "LOCA": + settings.set(k + 'L', parseTimeStamp(v)); + break; + } + }, /[^\d]:/, /,/); + self.ontimestampmap && self.ontimestampmap({ + "MPEGTS": settings.get("MPEGTS"), + "LOCAL": settings.get("LOCAL") + }); + } + + // 3.2 WebVTT metadata header syntax + function parseHeader(input) { + if (input.match(/X-TIMESTAMP-MAP/)) { + // This line contains HLS X-TIMESTAMP-MAP metadata + parseOptions(input, function (k, v) { + switch (k) { + case "X-TIMESTAMP-MAP": + parseTimestampMap(v); + break; + } + }, /=/); + } else { + parseOptions(input, function (k, v) { + switch (k) { + case "Region": + // 3.3 WebVTT region metadata header syntax + parseRegion(v); + break; + } + }, /:/); + } + } + + // 5.1 WebVTT file parsing. + try { + var line; + if (self.state === "INITIAL") { + // We can't start parsing until we have the first line. + if (!/\r\n|\n/.test(self.buffer)) { + return this; + } + line = collectNextLine(); + var m = line.match(/^WEBVTT([ \t].*)?$/); + if (!m || !m[0]) { + throw new ParsingError(ParsingError.Errors.BadSignature); + } + self.state = "HEADER"; + } + var alreadyCollectedLine = false; + while (self.buffer) { + // We can't parse a line until we have the full line. + if (!/\r\n|\n/.test(self.buffer)) { + return this; + } + if (!alreadyCollectedLine) { + line = collectNextLine(); + } else { + alreadyCollectedLine = false; + } + switch (self.state) { + case "HEADER": + // 13-18 - Allow a header (metadata) under the WEBVTT line. + if (/:/.test(line)) { + parseHeader(line); + } else if (!line) { + // An empty line terminates the header and starts the body (cues). + self.state = "ID"; + } + continue; + case "NOTE": + // Ignore NOTE blocks. + if (!line) { + self.state = "ID"; + } + continue; + case "ID": + // Check for the start of NOTE blocks. + if (/^NOTE($|[ \t])/.test(line)) { + self.state = "NOTE"; + break; + } + // 19-29 - Allow any number of line terminators, then initialize new cue values. + if (!line) { + continue; + } + self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, ""); + // Safari still uses the old middle value and won't accept center + try { + self.cue.align = "center"; + } catch (e) { + self.cue.align = "middle"; + } + self.state = "CUE"; + // 30-39 - Check if self line contains an optional identifier or timing data. + if (line.indexOf("-->") === -1) { + self.cue.id = line; + continue; + } + // Process line as start of a cue. + /*falls through*/ + case "CUE": + // 40 - Collect cue timings and settings. + try { + parseCue(line, self.cue, self.regionList); + } catch (e) { + self.reportOrThrowError(e); + // In case of an error ignore rest of the cue. + self.cue = null; + self.state = "BADCUE"; + continue; + } + self.state = "CUETEXT"; + continue; + case "CUETEXT": + var hasSubstring = line.indexOf("-->") !== -1; + // 34 - If we have an empty line then report the cue. + // 35 - If we have the special substring '-->' then report the cue, + // but do not collect the line as we need to process the current + // one as a new cue. + if (!line || hasSubstring && (alreadyCollectedLine = true)) { + // We are done parsing self cue. + self.oncue && self.oncue(self.cue); + self.cue = null; + self.state = "ID"; + continue; + } + if (self.cue.text) { + self.cue.text += "\n"; + } + self.cue.text += line.replace(/\u2028/g, '\n').replace(/u2029/g, '\n'); + continue; + case "BADCUE": + // BADCUE + // 54-62 - Collect and discard the remaining cue. + if (!line) { + self.state = "ID"; + } + continue; + } + } + } catch (e) { + self.reportOrThrowError(e); + + // If we are currently parsing a cue, report what we have. + if (self.state === "CUETEXT" && self.cue && self.oncue) { + self.oncue(self.cue); + } + self.cue = null; + // Enter BADWEBVTT state if header was not parsed correctly otherwise + // another exception occurred so enter BADCUE state. + self.state = self.state === "INITIAL" ? "BADWEBVTT" : "BADCUE"; + } + return this; + }, + flush: function () { + var self = this; + try { + // Finish decoding the stream. + self.buffer += self.decoder.decode(); + // Synthesize the end of the current cue or region. + if (self.cue || self.state === "HEADER") { + self.buffer += "\n\n"; + self.parse(); + } + // If we've flushed, parsed, and we're still on the INITIAL state then + // that means we don't have enough of the stream to parse the first + // line. + if (self.state === "INITIAL") { + throw new ParsingError(ParsingError.Errors.BadSignature); + } + } catch (e) { + self.reportOrThrowError(e); + } + self.onflush && self.onflush(); + return this; + } + }; + var vtt = WebVTT$1; + + /** + * Copyright 2013 vtt.js Contributors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + var autoKeyword = "auto"; + var directionSetting = { + "": 1, + "lr": 1, + "rl": 1 + }; + var alignSetting = { + "start": 1, + "center": 1, + "end": 1, + "left": 1, + "right": 1, + "auto": 1, + "line-left": 1, + "line-right": 1 + }; + function findDirectionSetting(value) { + if (typeof value !== "string") { + return false; + } + var dir = directionSetting[value.toLowerCase()]; + return dir ? value.toLowerCase() : false; + } + function findAlignSetting(value) { + if (typeof value !== "string") { + return false; + } + var align = alignSetting[value.toLowerCase()]; + return align ? value.toLowerCase() : false; + } + function VTTCue(startTime, endTime, text) { + /** + * Shim implementation specific properties. These properties are not in + * the spec. + */ + + // Lets us know when the VTTCue's data has changed in such a way that we need + // to recompute its display state. This lets us compute its display state + // lazily. + this.hasBeenReset = false; + + /** + * VTTCue and TextTrackCue properties + * http://dev.w3.org/html5/webvtt/#vttcue-interface + */ + + var _id = ""; + var _pauseOnExit = false; + var _startTime = startTime; + var _endTime = endTime; + var _text = text; + var _region = null; + var _vertical = ""; + var _snapToLines = true; + var _line = "auto"; + var _lineAlign = "start"; + var _position = "auto"; + var _positionAlign = "auto"; + var _size = 100; + var _align = "center"; + Object.defineProperties(this, { + "id": { + enumerable: true, + get: function () { + return _id; + }, + set: function (value) { + _id = "" + value; + } + }, + "pauseOnExit": { + enumerable: true, + get: function () { + return _pauseOnExit; + }, + set: function (value) { + _pauseOnExit = !!value; + } + }, + "startTime": { + enumerable: true, + get: function () { + return _startTime; + }, + set: function (value) { + if (typeof value !== "number") { + throw new TypeError("Start time must be set to a number."); + } + _startTime = value; + this.hasBeenReset = true; + } + }, + "endTime": { + enumerable: true, + get: function () { + return _endTime; + }, + set: function (value) { + if (typeof value !== "number") { + throw new TypeError("End time must be set to a number."); + } + _endTime = value; + this.hasBeenReset = true; + } + }, + "text": { + enumerable: true, + get: function () { + return _text; + }, + set: function (value) { + _text = "" + value; + this.hasBeenReset = true; + } + }, + "region": { + enumerable: true, + get: function () { + return _region; + }, + set: function (value) { + _region = value; + this.hasBeenReset = true; + } + }, + "vertical": { + enumerable: true, + get: function () { + return _vertical; + }, + set: function (value) { + var setting = findDirectionSetting(value); + // Have to check for false because the setting an be an empty string. + if (setting === false) { + throw new SyntaxError("Vertical: an invalid or illegal direction string was specified."); + } + _vertical = setting; + this.hasBeenReset = true; + } + }, + "snapToLines": { + enumerable: true, + get: function () { + return _snapToLines; + }, + set: function (value) { + _snapToLines = !!value; + this.hasBeenReset = true; + } + }, + "line": { + enumerable: true, + get: function () { + return _line; + }, + set: function (value) { + if (typeof value !== "number" && value !== autoKeyword) { + throw new SyntaxError("Line: an invalid number or illegal string was specified."); + } + _line = value; + this.hasBeenReset = true; + } + }, + "lineAlign": { + enumerable: true, + get: function () { + return _lineAlign; + }, + set: function (value) { + var setting = findAlignSetting(value); + if (!setting) { + console.warn("lineAlign: an invalid or illegal string was specified."); + } else { + _lineAlign = setting; + this.hasBeenReset = true; + } + } + }, + "position": { + enumerable: true, + get: function () { + return _position; + }, + set: function (value) { + if (value < 0 || value > 100) { + throw new Error("Position must be between 0 and 100."); + } + _position = value; + this.hasBeenReset = true; + } + }, + "positionAlign": { + enumerable: true, + get: function () { + return _positionAlign; + }, + set: function (value) { + var setting = findAlignSetting(value); + if (!setting) { + console.warn("positionAlign: an invalid or illegal string was specified."); + } else { + _positionAlign = setting; + this.hasBeenReset = true; + } + } + }, + "size": { + enumerable: true, + get: function () { + return _size; + }, + set: function (value) { + if (value < 0 || value > 100) { + throw new Error("Size must be between 0 and 100."); + } + _size = value; + this.hasBeenReset = true; + } + }, + "align": { + enumerable: true, + get: function () { + return _align; + }, + set: function (value) { + var setting = findAlignSetting(value); + if (!setting) { + throw new SyntaxError("align: an invalid or illegal alignment string was specified."); + } + _align = setting; + this.hasBeenReset = true; + } + } + }); + + /** + * Other spec defined properties + */ + + // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state + this.displayState = undefined; + } + + /** + * VTTCue methods + */ + + VTTCue.prototype.getCueAsHTML = function () { + // Assume WebVTT.convertCueToDOMTree is on the global. + return WebVTT.convertCueToDOMTree(window, this.text); + }; + var vttcue = VTTCue; + + /** + * Copyright 2013 vtt.js Contributors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + var scrollSetting = { + "": true, + "up": true + }; + function findScrollSetting(value) { + if (typeof value !== "string") { + return false; + } + var scroll = scrollSetting[value.toLowerCase()]; + return scroll ? value.toLowerCase() : false; + } + function isValidPercentValue(value) { + return typeof value === "number" && value >= 0 && value <= 100; + } + + // VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface + function VTTRegion() { + var _width = 100; + var _lines = 3; + var _regionAnchorX = 0; + var _regionAnchorY = 100; + var _viewportAnchorX = 0; + var _viewportAnchorY = 100; + var _scroll = ""; + Object.defineProperties(this, { + "width": { + enumerable: true, + get: function () { + return _width; + }, + set: function (value) { + if (!isValidPercentValue(value)) { + throw new Error("Width must be between 0 and 100."); + } + _width = value; + } + }, + "lines": { + enumerable: true, + get: function () { + return _lines; + }, + set: function (value) { + if (typeof value !== "number") { + throw new TypeError("Lines must be set to a number."); + } + _lines = value; + } + }, + "regionAnchorY": { + enumerable: true, + get: function () { + return _regionAnchorY; + }, + set: function (value) { + if (!isValidPercentValue(value)) { + throw new Error("RegionAnchorX must be between 0 and 100."); + } + _regionAnchorY = value; + } + }, + "regionAnchorX": { + enumerable: true, + get: function () { + return _regionAnchorX; + }, + set: function (value) { + if (!isValidPercentValue(value)) { + throw new Error("RegionAnchorY must be between 0 and 100."); + } + _regionAnchorX = value; + } + }, + "viewportAnchorY": { + enumerable: true, + get: function () { + return _viewportAnchorY; + }, + set: function (value) { + if (!isValidPercentValue(value)) { + throw new Error("ViewportAnchorY must be between 0 and 100."); + } + _viewportAnchorY = value; + } + }, + "viewportAnchorX": { + enumerable: true, + get: function () { + return _viewportAnchorX; + }, + set: function (value) { + if (!isValidPercentValue(value)) { + throw new Error("ViewportAnchorX must be between 0 and 100."); + } + _viewportAnchorX = value; + } + }, + "scroll": { + enumerable: true, + get: function () { + return _scroll; + }, + set: function (value) { + var setting = findScrollSetting(value); + // Have to check for false as an empty string is a legal value. + if (setting === false) { + console.warn("Scroll: an invalid or illegal string was specified."); + } else { + _scroll = setting; + } + } + } + }); + } + var vttregion = VTTRegion; + + var browserIndex = createCommonjsModule(function (module) { + /** + * Copyright 2013 vtt.js Contributors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + // Default exports for Node. Export the extended versions of VTTCue and + // VTTRegion in Node since we likely want the capability to convert back and + // forth between JSON. If we don't then it's not that big of a deal since we're + // off browser. + + var vttjs = module.exports = { + WebVTT: vtt, + VTTCue: vttcue, + VTTRegion: vttregion + }; + window_1.vttjs = vttjs; + window_1.WebVTT = vttjs.WebVTT; + var cueShim = vttjs.VTTCue; + var regionShim = vttjs.VTTRegion; + var nativeVTTCue = window_1.VTTCue; + var nativeVTTRegion = window_1.VTTRegion; + vttjs.shim = function () { + window_1.VTTCue = cueShim; + window_1.VTTRegion = regionShim; + }; + vttjs.restore = function () { + window_1.VTTCue = nativeVTTCue; + window_1.VTTRegion = nativeVTTRegion; + }; + if (!window_1.VTTCue) { + vttjs.shim(); + } + }); + browserIndex.WebVTT; + browserIndex.VTTCue; + browserIndex.VTTRegion; + + /** + * @file tech.js + */ + + /** + * An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string + * that just contains the src url alone. + * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};` + * `var SourceString = 'http://example.com/some-video.mp4';` + * + * @typedef {Object|string} SourceObject + * + * @property {string} src + * The url to the source + * + * @property {string} type + * The mime type of the source + */ + + /** + * A function used by {@link Tech} to create a new {@link TextTrack}. + * + * @private + * + * @param {Tech} self + * An instance of the Tech class. + * + * @param {string} kind + * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata) + * + * @param {string} [label] + * Label to identify the text track + * + * @param {string} [language] + * Two letter language abbreviation + * + * @param {Object} [options={}] + * An object with additional text track options + * + * @return {TextTrack} + * The text track that was created. + */ + function createTrackHelper(self, kind, label, language, options = {}) { + const tracks = self.textTracks(); + options.kind = kind; + if (label) { + options.label = label; + } + if (language) { + options.language = language; + } + options.tech = self; + const track = new ALL.text.TrackClass(options); + tracks.addTrack(track); + return track; + } + + /** + * This is the base class for media playback technology controllers, such as + * {@link HTML5} + * + * @extends Component + */ + class Tech extends Component { + /** + * Create an instance of this Tech. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Function} [ready] + * Callback function to call when the `HTML5` Tech is ready. + */ + constructor(options = {}, ready = function () {}) { + // we don't want the tech to report user activity automatically. + // This is done manually in addControlsListeners + options.reportTouchActivity = false; + super(null, options, ready); + this.onDurationChange_ = e => this.onDurationChange(e); + this.trackProgress_ = e => this.trackProgress(e); + this.trackCurrentTime_ = e => this.trackCurrentTime(e); + this.stopTrackingCurrentTime_ = e => this.stopTrackingCurrentTime(e); + this.disposeSourceHandler_ = e => this.disposeSourceHandler(e); + this.queuedHanders_ = new Set(); + + // keep track of whether the current source has played at all to + // implement a very limited played() + this.hasStarted_ = false; + this.on('playing', function () { + this.hasStarted_ = true; + }); + this.on('loadstart', function () { + this.hasStarted_ = false; + }); + ALL.names.forEach(name => { + const props = ALL[name]; + if (options && options[props.getterName]) { + this[props.privateName] = options[props.getterName]; + } + }); + + // Manually track progress in cases where the browser/tech doesn't report it. + if (!this.featuresProgressEvents) { + this.manualProgressOn(); + } + + // Manually track timeupdates in cases where the browser/tech doesn't report it. + if (!this.featuresTimeupdateEvents) { + this.manualTimeUpdatesOn(); + } + ['Text', 'Audio', 'Video'].forEach(track => { + if (options[`native${track}Tracks`] === false) { + this[`featuresNative${track}Tracks`] = false; + } + }); + if (options.nativeCaptions === false || options.nativeTextTracks === false) { + this.featuresNativeTextTracks = false; + } else if (options.nativeCaptions === true || options.nativeTextTracks === true) { + this.featuresNativeTextTracks = true; + } + if (!this.featuresNativeTextTracks) { + this.emulateTextTracks(); + } + this.preloadTextTracks = options.preloadTextTracks !== false; + this.autoRemoteTextTracks_ = new ALL.text.ListClass(); + this.initTrackListeners(); + + // Turn on component tap events only if not using native controls + if (!options.nativeControlsForTouch) { + this.emitTapEvents(); + } + if (this.constructor) { + this.name_ = this.constructor.name || 'Unknown Tech'; + } + } + + /** + * A special function to trigger source set in a way that will allow player + * to re-trigger if the player or tech are not ready yet. + * + * @fires Tech#sourceset + * @param {string} src The source string at the time of the source changing. + */ + triggerSourceset(src) { + if (!this.isReady_) { + // on initial ready we have to trigger source set + // 1ms after ready so that player can watch for it. + this.one('ready', () => this.setTimeout(() => this.triggerSourceset(src), 1)); + } + + /** + * Fired when the source is set on the tech causing the media element + * to reload. + * + * @see {@link Player#event:sourceset} + * @event Tech#sourceset + * @type {Event} + */ + this.trigger({ + src, + type: 'sourceset' + }); + } + + /* Fallbacks for unsupported event types + ================================================================================ */ + + /** + * Polyfill the `progress` event for browsers that don't support it natively. + * + * @see {@link Tech#trackProgress} + */ + manualProgressOn() { + this.on('durationchange', this.onDurationChange_); + this.manualProgress = true; + + // Trigger progress watching when a source begins loading + this.one('ready', this.trackProgress_); + } + + /** + * Turn off the polyfill for `progress` events that was created in + * {@link Tech#manualProgressOn} + */ + manualProgressOff() { + this.manualProgress = false; + this.stopTrackingProgress(); + this.off('durationchange', this.onDurationChange_); + } + + /** + * This is used to trigger a `progress` event when the buffered percent changes. It + * sets an interval function that will be called every 500 milliseconds to check if the + * buffer end percent has changed. + * + * > This function is called by {@link Tech#manualProgressOn} + * + * @param {Event} event + * The `ready` event that caused this to run. + * + * @listens Tech#ready + * @fires Tech#progress + */ + trackProgress(event) { + this.stopTrackingProgress(); + this.progressInterval = this.setInterval(bind_(this, function () { + // Don't trigger unless buffered amount is greater than last time + + const numBufferedPercent = this.bufferedPercent(); + if (this.bufferedPercent_ !== numBufferedPercent) { + /** + * See {@link Player#progress} + * + * @event Tech#progress + * @type {Event} + */ + this.trigger('progress'); + } + this.bufferedPercent_ = numBufferedPercent; + if (numBufferedPercent === 1) { + this.stopTrackingProgress(); + } + }), 500); + } + + /** + * Update our internal duration on a `durationchange` event by calling + * {@link Tech#duration}. + * + * @param {Event} event + * The `durationchange` event that caused this to run. + * + * @listens Tech#durationchange + */ + onDurationChange(event) { + this.duration_ = this.duration(); + } + + /** + * Get and create a `TimeRange` object for buffering. + * + * @return { import('../utils/time').TimeRange } + * The time range object that was created. + */ + buffered() { + return createTimeRanges(0, 0); + } + + /** + * Get the percentage of the current video that is currently buffered. + * + * @return {number} + * A number from 0 to 1 that represents the decimal percentage of the + * video that is buffered. + * + */ + bufferedPercent() { + return bufferedPercent(this.buffered(), this.duration_); + } + + /** + * Turn off the polyfill for `progress` events that was created in + * {@link Tech#manualProgressOn} + * Stop manually tracking progress events by clearing the interval that was set in + * {@link Tech#trackProgress}. + */ + stopTrackingProgress() { + this.clearInterval(this.progressInterval); + } + + /** + * Polyfill the `timeupdate` event for browsers that don't support it. + * + * @see {@link Tech#trackCurrentTime} + */ + manualTimeUpdatesOn() { + this.manualTimeUpdates = true; + this.on('play', this.trackCurrentTime_); + this.on('pause', this.stopTrackingCurrentTime_); + } + + /** + * Turn off the polyfill for `timeupdate` events that was created in + * {@link Tech#manualTimeUpdatesOn} + */ + manualTimeUpdatesOff() { + this.manualTimeUpdates = false; + this.stopTrackingCurrentTime(); + this.off('play', this.trackCurrentTime_); + this.off('pause', this.stopTrackingCurrentTime_); + } + + /** + * Sets up an interval function to track current time and trigger `timeupdate` every + * 250 milliseconds. + * + * @listens Tech#play + * @triggers Tech#timeupdate + */ + trackCurrentTime() { + if (this.currentTimeInterval) { + this.stopTrackingCurrentTime(); + } + this.currentTimeInterval = this.setInterval(function () { + /** + * Triggered at an interval of 250ms to indicated that time is passing in the video. + * + * @event Tech#timeupdate + * @type {Event} + */ + this.trigger({ + type: 'timeupdate', + target: this, + manuallyTriggered: true + }); + + // 42 = 24 fps // 250 is what Webkit uses // FF uses 15 + }, 250); + } + + /** + * Stop the interval function created in {@link Tech#trackCurrentTime} so that the + * `timeupdate` event is no longer triggered. + * + * @listens {Tech#pause} + */ + stopTrackingCurrentTime() { + this.clearInterval(this.currentTimeInterval); + + // #1002 - if the video ends right before the next timeupdate would happen, + // the progress bar won't make it all the way to the end + this.trigger({ + type: 'timeupdate', + target: this, + manuallyTriggered: true + }); + } + + /** + * Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList}, + * {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech. + * + * @fires Component#dispose + */ + dispose() { + // clear out all tracks because we can't reuse them between techs + this.clearTracks(NORMAL.names); + + // Turn off any manual progress or timeupdate tracking + if (this.manualProgress) { + this.manualProgressOff(); + } + if (this.manualTimeUpdates) { + this.manualTimeUpdatesOff(); + } + super.dispose(); + } + + /** + * Clear out a single `TrackList` or an array of `TrackLists` given their names. + * + * > Note: Techs without source handlers should call this between sources for `video` + * & `audio` tracks. You don't want to use them between tracks! + * + * @param {string[]|string} types + * TrackList names to clear, valid names are `video`, `audio`, and + * `text`. + */ + clearTracks(types) { + types = [].concat(types); + // clear out all tracks because we can't reuse them between techs + types.forEach(type => { + const list = this[`${type}Tracks`]() || []; + let i = list.length; + while (i--) { + const track = list[i]; + if (type === 'text') { + this.removeRemoteTextTrack(track); + } + list.removeTrack(track); + } + }); + } + + /** + * Remove any TextTracks added via addRemoteTextTrack that are + * flagged for automatic garbage collection + */ + cleanupAutoTextTracks() { + const list = this.autoRemoteTextTracks_ || []; + let i = list.length; + while (i--) { + const track = list[i]; + this.removeRemoteTextTrack(track); + } + } + + /** + * Reset the tech, which will removes all sources and reset the internal readyState. + * + * @abstract + */ + reset() {} + + /** + * Get the value of `crossOrigin` from the tech. + * + * @abstract + * + * @see {Html5#crossOrigin} + */ + crossOrigin() {} + + /** + * Set the value of `crossOrigin` on the tech. + * + * @abstract + * + * @param {string} crossOrigin the crossOrigin value + * @see {Html5#setCrossOrigin} + */ + setCrossOrigin() {} + + /** + * Get or set an error on the Tech. + * + * @param {MediaError} [err] + * Error to set on the Tech + * + * @return {MediaError|null} + * The current error object on the tech, or null if there isn't one. + */ + error(err) { + if (err !== undefined) { + this.error_ = new MediaError(err); + this.trigger('error'); + } + return this.error_; + } + + /** + * Returns the `TimeRange`s that have been played through for the current source. + * + * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`. + * It only checks whether the source has played at all or not. + * + * @return { import('../utils/time').TimeRange } + * - A single time range if this video has played + * - An empty set of ranges if not. + */ + played() { + if (this.hasStarted_) { + return createTimeRanges(0, 0); + } + return createTimeRanges(); + } + + /** + * Start playback + * + * @abstract + * + * @see {Html5#play} + */ + play() {} + + /** + * Set whether we are scrubbing or not + * + * @abstract + * @param {boolean} _isScrubbing + * - true for we are currently scrubbing + * - false for we are no longer scrubbing + * + * @see {Html5#setScrubbing} + */ + setScrubbing(_isScrubbing) {} + + /** + * Get whether we are scrubbing or not + * + * @abstract + * + * @see {Html5#scrubbing} + */ + scrubbing() {} + + /** + * Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was + * previously called. + * + * @param {number} _seconds + * Set the current time of the media to this. + * @fires Tech#timeupdate + */ + setCurrentTime(_seconds) { + // improve the accuracy of manual timeupdates + if (this.manualTimeUpdates) { + /** + * A manual `timeupdate` event. + * + * @event Tech#timeupdate + * @type {Event} + */ + this.trigger({ + type: 'timeupdate', + target: this, + manuallyTriggered: true + }); + } + } + + /** + * Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and + * {@link TextTrackList} events. + * + * This adds {@link EventTarget~EventListeners} for `addtrack`, and `removetrack`. + * + * @fires Tech#audiotrackchange + * @fires Tech#videotrackchange + * @fires Tech#texttrackchange + */ + initTrackListeners() { + /** + * Triggered when tracks are added or removed on the Tech {@link AudioTrackList} + * + * @event Tech#audiotrackchange + * @type {Event} + */ + + /** + * Triggered when tracks are added or removed on the Tech {@link VideoTrackList} + * + * @event Tech#videotrackchange + * @type {Event} + */ + + /** + * Triggered when tracks are added or removed on the Tech {@link TextTrackList} + * + * @event Tech#texttrackchange + * @type {Event} + */ + NORMAL.names.forEach(name => { + const props = NORMAL[name]; + const trackListChanges = () => { + this.trigger(`${name}trackchange`); + }; + const tracks = this[props.getterName](); + tracks.addEventListener('removetrack', trackListChanges); + tracks.addEventListener('addtrack', trackListChanges); + this.on('dispose', () => { + tracks.removeEventListener('removetrack', trackListChanges); + tracks.removeEventListener('addtrack', trackListChanges); + }); + }); + } + + /** + * Emulate TextTracks using vtt.js if necessary + * + * @fires Tech#vttjsloaded + * @fires Tech#vttjserror + */ + addWebVttScript_() { + if (window.WebVTT) { + return; + } + + // Initially, Tech.el_ is a child of a dummy-div wait until the Component system + // signals that the Tech is ready at which point Tech.el_ is part of the DOM + // before inserting the WebVTT script + if (document.body.contains(this.el())) { + // load via require if available and vtt.js script location was not passed in + // as an option. novtt builds will turn the above require call into an empty object + // which will cause this if check to always fail. + if (!this.options_['vtt.js'] && isPlain(browserIndex) && Object.keys(browserIndex).length > 0) { + this.trigger('vttjsloaded'); + return; + } + + // load vtt.js via the script location option or the cdn of no location was + // passed in + const script = document.createElement('script'); + script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js'; + script.onload = () => { + /** + * Fired when vtt.js is loaded. + * + * @event Tech#vttjsloaded + * @type {Event} + */ + this.trigger('vttjsloaded'); + }; + script.onerror = () => { + /** + * Fired when vtt.js was not loaded due to an error + * + * @event Tech#vttjsloaded + * @type {Event} + */ + this.trigger('vttjserror'); + }; + this.on('dispose', () => { + script.onload = null; + script.onerror = null; + }); + // but have not loaded yet and we set it to true before the inject so that + // we don't overwrite the injected window.WebVTT if it loads right away + window.WebVTT = true; + this.el().parentNode.appendChild(script); + } else { + this.ready(this.addWebVttScript_); + } + } + + /** + * Emulate texttracks + * + */ + emulateTextTracks() { + const tracks = this.textTracks(); + const remoteTracks = this.remoteTextTracks(); + const handleAddTrack = e => tracks.addTrack(e.track); + const handleRemoveTrack = e => tracks.removeTrack(e.track); + remoteTracks.on('addtrack', handleAddTrack); + remoteTracks.on('removetrack', handleRemoveTrack); + this.addWebVttScript_(); + const updateDisplay = () => this.trigger('texttrackchange'); + const textTracksChanges = () => { + updateDisplay(); + for (let i = 0; i < tracks.length; i++) { + const track = tracks[i]; + track.removeEventListener('cuechange', updateDisplay); + if (track.mode === 'showing') { + track.addEventListener('cuechange', updateDisplay); + } + } + }; + textTracksChanges(); + tracks.addEventListener('change', textTracksChanges); + tracks.addEventListener('addtrack', textTracksChanges); + tracks.addEventListener('removetrack', textTracksChanges); + this.on('dispose', function () { + remoteTracks.off('addtrack', handleAddTrack); + remoteTracks.off('removetrack', handleRemoveTrack); + tracks.removeEventListener('change', textTracksChanges); + tracks.removeEventListener('addtrack', textTracksChanges); + tracks.removeEventListener('removetrack', textTracksChanges); + for (let i = 0; i < tracks.length; i++) { + const track = tracks[i]; + track.removeEventListener('cuechange', updateDisplay); + } + }); + } + + /** + * Create and returns a remote {@link TextTrack} object. + * + * @param {string} kind + * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata) + * + * @param {string} [label] + * Label to identify the text track + * + * @param {string} [language] + * Two letter language abbreviation + * + * @return {TextTrack} + * The TextTrack that gets created. + */ + addTextTrack(kind, label, language) { + if (!kind) { + throw new Error('TextTrack kind is required but was not provided'); + } + return createTrackHelper(this, kind, label, language); + } + + /** + * Create an emulated TextTrack for use by addRemoteTextTrack + * + * This is intended to be overridden by classes that inherit from + * Tech in order to create native or custom TextTracks. + * + * @param {Object} options + * The object should contain the options to initialize the TextTrack with. + * + * @param {string} [options.kind] + * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata). + * + * @param {string} [options.label]. + * Label to identify the text track + * + * @param {string} [options.language] + * Two letter language abbreviation. + * + * @return {HTMLTrackElement} + * The track element that gets created. + */ + createRemoteTextTrack(options) { + const track = merge(options, { + tech: this + }); + return new REMOTE.remoteTextEl.TrackClass(track); + } + + /** + * Creates a remote text track object and returns an html track element. + * + * > Note: This can be an emulated {@link HTMLTrackElement} or a native one. + * + * @param {Object} options + * See {@link Tech#createRemoteTextTrack} for more detailed properties. + * + * @param {boolean} [manualCleanup=false] + * - When false: the TextTrack will be automatically removed from the video + * element whenever the source changes + * - When True: The TextTrack will have to be cleaned up manually + * + * @return {HTMLTrackElement} + * An Html Track Element. + * + */ + addRemoteTextTrack(options = {}, manualCleanup) { + const htmlTrackElement = this.createRemoteTextTrack(options); + if (typeof manualCleanup !== 'boolean') { + manualCleanup = false; + } + + // store HTMLTrackElement and TextTrack to remote list + this.remoteTextTrackEls().addTrackElement_(htmlTrackElement); + this.remoteTextTracks().addTrack(htmlTrackElement.track); + if (manualCleanup === false) { + // create the TextTrackList if it doesn't exist + this.ready(() => this.autoRemoteTextTracks_.addTrack(htmlTrackElement.track)); + } + return htmlTrackElement; + } + + /** + * Remove a remote text track from the remote `TextTrackList`. + * + * @param {TextTrack} track + * `TextTrack` to remove from the `TextTrackList` + */ + removeRemoteTextTrack(track) { + const trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track); + + // remove HTMLTrackElement and TextTrack from remote list + this.remoteTextTrackEls().removeTrackElement_(trackElement); + this.remoteTextTracks().removeTrack(track); + this.autoRemoteTextTracks_.removeTrack(track); + } + + /** + * Gets available media playback quality metrics as specified by the W3C's Media + * Playback Quality API. + * + * @see [Spec]{@link https://wicg.github.io/media-playback-quality} + * + * @return {Object} + * An object with supported media playback quality metrics + * + * @abstract + */ + getVideoPlaybackQuality() { + return {}; + } + + /** + * Attempt to create a floating video window always on top of other windows + * so that users may continue consuming media while they interact with other + * content sites, or applications on their device. + * + * @see [Spec]{@link https://wicg.github.io/picture-in-picture} + * + * @return {Promise|undefined} + * A promise with a Picture-in-Picture window if the browser supports + * Promises (or one was passed in as an option). It returns undefined + * otherwise. + * + * @abstract + */ + requestPictureInPicture() { + return Promise.reject(); + } + + /** + * A method to check for the value of the 'disablePictureInPicture'