https://nicklowe.com/wp-content/themes/koncept/js/mejs-gw-playlist.min.js

1/*globals window, document, jQuery, _, Backbone, _wpmejsSettings */
2
3(function ($, _, Backbone) {
4	"use strict";
5
6	var WPPlaylistView = Backbone.View.extend({
7		initialize : function (options) {
8
9			// Resize players to 100%
10			$('video').css({'width': '100%', 'height': '100%'})
11				.attr('width', '100%').attr('height', '100%');
12			$('audio').css('width','100%').attr('width', '100%');
13
14			this.index = 0;
15			this.settings = {};
16			this.data = options.metadata || $.parseJSON( this.$('script').html() );
17			this.playerNode = this.$( this.data.type );
18
19
20			this.tracks = new Backbone.Collection( this.data.tracks );
21			this.current = this.tracks.first();
22
23			if ( 'audio' === this.data.type ) {
24				this.currentTemplate = wp.template( 'wp-playlist-current-item' );
25				this.currentNode = this.$( '.wp-playlist-current-item' );
26			}
27
28			this.renderCurrent();
29
30			if ( this.data.tracklist ) {
31				this.itemTemplate = wp.template( 'wp-playlist-item' );
32				this.playingClass = 'wp-playlist-playing';
33				this.renderTracks();
34			}
35
36			this.playerNode.attr( 'src', this.current.get( 'src' ) );
37
38			_.bindAll( this, 'bindPlayer', 'bindResetPlayer', 'setPlayer', 'ended', 'clickTrack' );
39
40			if ( ! _.isUndefined( window._wpmejsSettings ) ) {
41				this.settings.pluginPath = _wpmejsSettings.pluginPath;
42			}
43			this.settings.success = this.bindPlayer;
44			this.setPlayer();
45		},
46
47		bindPlayer : function (mejs) {
48			this.player = mejs;
49			this.player.addEventListener( 'ended', this.ended );
50
51		},
52
53		bindResetPlayer : function (mejs) {
54			this.bindPlayer( mejs );
55			this.playCurrentSrc();
56		},
57
58		setPlayer: function () {
59			if ( this._player ) {
60				this._player.pause();
61				this._player.remove();
62				this.playerNode = this.$( this.data.type );
63				this.playerNode.attr( 'src', this.current.get( 'src' ) );
64				this.settings.success = this.bindResetPlayer;
65			}
66			/**
67			 * This is also our bridge to the outside world
68			 */
69			this._player = new MediaElementPlayer( this.playerNode.get(0), this.settings );
70		},
71
72		playCurrentSrc : function () {
73			this.renderCurrent();
74			this.player.setSrc( this.playerNode.attr( 'src' ) );
75			this.player.load();
76			this.player.play();
77		},
78
79		renderCurrent : function () {
80			var dimensions;
81			if ( 'video' === this.data.type ) {
82				if ( this.data.images && this.current.get( 'image' ) ) {
83					this.playerNode.attr( 'poster', this.current.get( 'image' ).src );
84				}
85				dimensions = this.current.get( 'dimensions' ).resized;
86				this.playerNode.attr( dimensions );
87			} else {
88				if ( ! this.data.images ) {
89					this.current.set( 'image', false );
90				}
91				this.currentNode.html( this.currentTemplate( this.current.toJSON() ) );
92			}
93		},
94
95		renderTracks : function () {
96			var self = this, i = 1, tracklist = $( '<div class="wp-playlist-tracks"></div>' );
97			this.tracks.each(function (model) {
98				if ( ! self.data.images ) {
99					model.set( 'image', false );
100				}
101				model.set( 'artists', self.data.artists );
102				model.set( 'index', self.data.tracknumbers ? i : false );
103				tracklist.append( self.itemTemplate( model.toJSON() ) );
104				i += 1;
105			});
106			this.$el.append( tracklist );
107
108			this.$( '.wp-playlist-item' ).eq(0).addClass( this.playingClass );
109		},
110
111		events : {
112			'click .wp-playlist-item' : 'clickTrack',
113			'click .wp-playlist-next' : 'next',
114			'click .wp-playlist-prev' : 'prev'
115		},
116
117		clickTrack : function (e) {
118			e.preventDefault();
119
120			this.index = this.$( '.wp-playlist-item' ).index( e.currentTarget );
121			this.setCurrent();
122		},
123
124		ended : function () {
125			if ( this.index + 1 < this.tracks.length ) {
126				this.next();
127			} else {
128				this.index = 0;
129				this.current = this.tracks.at( this.index );
130				this.loadCurrent();
131			}
132		},
133
134		next : function () {
135			this.index = this.index + 1 >= this.tracks.length ? 0 : this.index + 1;
136			this.setCurrent();
137		},
138
139		prev : function () {
140			this.index = this.index - 1 < 0 ? this.tracks.length - 1 : this.index - 1;
141			this.setCurrent();
142		},
143
144		loadCurrent : function () {
145			var last = this.playerNode.attr( 'src' ).split('.').pop(),
146				current = this.current.get( 'src' ).split('.').pop();
147
148			this.player.pause();
149
150			if ( last !== current ) {
151				this.setPlayer();
152			} else {
153				this.playerNode.attr( 'src', this.current.get( 'src' ) );
154				this.playCurrentSrc();
155			}
156		},
157
158		setCurrent : function () {
159			this.current = this.tracks.at( this.index );
160
161			if ( this.data.tracklist ) {
162				this.$( '.wp-playlist-item' )
163					.removeClass( this.playingClass )
164					.eq( this.index )
165						.addClass( this.playingClass );
166			}
167
168			this.loadCurrent();
169		}
170	});
171
172    $(document).ready(function () {
173		if ( ! $( 'body' ).hasClass( 'wp-admin' ) || $( 'body' ).hasClass( 'about-php' ) ) {
174			$('.wp-playlist').each(function () {
175				return new WPPlaylistView({ el: this });
176			});
177		}
178    });
179
180	window.WPPlaylistView = WPPlaylistView;
181
182}(jQuery, _, Backbone));