gallery blueimp
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Andreas Stephanides
223
static/gallery/js/blueimp-gallery-youtube.js
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223
static/gallery/js/blueimp-gallery-youtube.js
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/*
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* blueimp Gallery YouTube Video Factory JS
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* https://github.com/blueimp/Gallery
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*
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* Copyright 2013, Sebastian Tschan
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* https://blueimp.net
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*
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* Licensed under the MIT license:
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* https://opensource.org/licenses/MIT
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*/
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/* global define, window, document, YT */
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;(function (factory) {
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'use strict'
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if (typeof define === 'function' && define.amd) {
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// Register as an anonymous AMD module:
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define(['./blueimp-helper', './blueimp-gallery-video'], factory)
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} else {
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// Browser globals:
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factory(window.blueimp.helper || window.jQuery, window.blueimp.Gallery)
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}
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})(function ($, Gallery) {
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'use strict'
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if (!window.postMessage) {
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return Gallery
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}
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$.extend(Gallery.prototype.options, {
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// The list object property (or data attribute) with the YouTube video id:
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youTubeVideoIdProperty: 'youtube',
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// Optional object with parameters passed to the YouTube video player:
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// https://developers.google.com/youtube/player_parameters
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youTubePlayerVars: {
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wmode: 'transparent'
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},
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// Require a click on the native YouTube player for the initial playback:
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youTubeClickToPlay: true
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})
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var textFactory =
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Gallery.prototype.textFactory || Gallery.prototype.imageFactory
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var YouTubePlayer = function (videoId, playerVars, clickToPlay) {
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this.videoId = videoId
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this.playerVars = playerVars
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this.clickToPlay = clickToPlay
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this.element = document.createElement('div')
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this.listeners = {}
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}
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$.extend(YouTubePlayer.prototype, {
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canPlayType: function () {
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return true
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},
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on: function (type, func) {
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this.listeners[type] = func
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return this
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},
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loadAPI: function () {
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var that = this
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var onYouTubeIframeAPIReady = window.onYouTubeIframeAPIReady
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var apiUrl = '//www.youtube.com/iframe_api'
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var scriptTags = document.getElementsByTagName('script')
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var i = scriptTags.length
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var scriptTag
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window.onYouTubeIframeAPIReady = function () {
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if (onYouTubeIframeAPIReady) {
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onYouTubeIframeAPIReady.apply(this)
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}
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if (that.playOnReady) {
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that.play()
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}
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}
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while (i) {
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i -= 1
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if (scriptTags[i].src === apiUrl) {
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return
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}
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}
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scriptTag = document.createElement('script')
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scriptTag.src = apiUrl
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scriptTags[0].parentNode.insertBefore(scriptTag, scriptTags[0])
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},
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onReady: function () {
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this.ready = true
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if (this.playOnReady) {
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this.play()
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}
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},
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onPlaying: function () {
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if (this.playStatus < 2) {
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this.listeners.playing()
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this.playStatus = 2
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}
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},
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onPause: function () {
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Gallery.prototype.setTimeout.call(this, this.checkSeek, null, 2000)
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},
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checkSeek: function () {
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if (
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this.stateChange === YT.PlayerState.PAUSED ||
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this.stateChange === YT.PlayerState.ENDED
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) {
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// check if current state change is actually paused
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this.listeners.pause()
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delete this.playStatus
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}
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},
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onStateChange: function (event) {
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switch (event.data) {
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case YT.PlayerState.PLAYING:
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this.hasPlayed = true
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this.onPlaying()
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break
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case YT.PlayerState.PAUSED:
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case YT.PlayerState.ENDED:
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this.onPause()
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break
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}
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// Save most recent state change to this.stateChange
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this.stateChange = event.data
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},
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onError: function (event) {
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this.listeners.error(event)
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},
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play: function () {
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var that = this
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if (!this.playStatus) {
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this.listeners.play()
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this.playStatus = 1
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}
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if (this.ready) {
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if (
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!this.hasPlayed &&
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(this.clickToPlay ||
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(window.navigator &&
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/iP(hone|od|ad)/.test(window.navigator.platform)))
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) {
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// Manually trigger the playing callback if clickToPlay
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// is enabled and to workaround a limitation in iOS,
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// which requires synchronous user interaction to start
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// the video playback:
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this.onPlaying()
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} else {
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this.player.playVideo()
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}
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} else {
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this.playOnReady = true
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if (!(window.YT && YT.Player)) {
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this.loadAPI()
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} else if (!this.player) {
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this.player = new YT.Player(this.element, {
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videoId: this.videoId,
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playerVars: this.playerVars,
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events: {
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onReady: function () {
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that.onReady()
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},
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onStateChange: function (event) {
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that.onStateChange(event)
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},
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onError: function (event) {
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that.onError(event)
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}
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}
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})
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}
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}
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},
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pause: function () {
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if (this.ready) {
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this.player.pauseVideo()
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} else if (this.playStatus) {
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delete this.playOnReady
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this.listeners.pause()
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delete this.playStatus
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}
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}
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})
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$.extend(Gallery.prototype, {
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YouTubePlayer: YouTubePlayer,
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textFactory: function (obj, callback) {
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var options = this.options
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var videoId = this.getItemProperty(obj, options.youTubeVideoIdProperty)
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if (videoId) {
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if (this.getItemProperty(obj, options.urlProperty) === undefined) {
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obj[options.urlProperty] = '//www.youtube.com/watch?v=' + videoId
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}
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if (
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this.getItemProperty(obj, options.videoPosterProperty) === undefined
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) {
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obj[options.videoPosterProperty] =
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'//img.youtube.com/vi/' + videoId + '/maxresdefault.jpg'
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}
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return this.videoFactory(
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obj,
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callback,
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new YouTubePlayer(
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videoId,
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options.youTubePlayerVars,
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options.youTubeClickToPlay
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)
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)
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}
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return textFactory.call(this, obj, callback)
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}
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})
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return Gallery
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})
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