panikweb_templates/static/js/audioPlayer.js

   1 (function($) {
   2         var thePlaylist;
   3         $.widget( "panik.playlist", {
   4                 /*
   5                         sound = {
   6                                 source :{
   7                                         ogg:"oggURL",
   8                                         mp3:"mp3URL"
   9                                 },
  10                                 emission: "episode.slug",
  11                                 episode: "episode.slug",
  12                                 id:""
  13                         }
  14                 */
  15                 options: {
  16                         playlist: [],
  17                         html5audioOptions:{controls:true},
  18                         classes: "",
  19                         itemClasses: "",
  20                         controlContainer: $('<div>'),
  21                         playlistContainer: $('<ol>'),
  22                         onLoad: function(){},
  23                         onAdd: function(){},
  24                         onPlay: function(){},
  25                         onUpdate: function(){},
  26                 },
  27                 _create: function() {
  28                 // Initialization logic here
  29                         thePlaylist = this;
  30                         this.isActive = false;
  31                         this.isLastAdd = false;
  32                         this.controlButtons = []
  33                         this.debugContainer = $('<pre>').hide();
  34                         this.controlContainer = this.options.controlContainer;
  35                         this.playlistContainer = this.options.playlistContainer;
  36                         this.element.addClass(this.options.classes);
  37                         this.element.append(this.controlContainer);
  38                         this.element.append(this.playlistContainer);
  39                         this.element.append(this.debugContainer);
  40                         this.playlist = this.options.playlist;
  41                         this.buildPlaylistControls();
  42                         this.loadPlaylist();
  43                         this._update();
  44                         this.options.onLoad(this);
  45                 },
  46
  47                 _setOption: function( key, value ) {
  48                         this.options[ key ] = value;
  49                         this._update();
  50                 },
  51                 _update: function() {
  52                         this.playlist = [];
  53                         this.playlistContainer.find('audio').each(function(){
  54                                 thePlaylist.playlist.push(thePlaylist.jsonifyAudio($(this)));
  55                         });
  56                         this.debugContainer.text(
  57                                 JSON.stringify(this.playlist, null, '\t')
  58                         );
  59                         this.savePlaylist();
  60                         this.options.onUpdate(this);
  61                         return this.playlist;
  62                 },
  63                 _reset: function() {
  64                         this.isActive =false;
  65                         this.stopSounds();
  66                         this.playlistContainer.find('*').remove();
  67                         this._update();
  68                 },
  69                 savePlaylist: function(){
  70                         var JSONPlaylist = JSON.stringify(this.playlist, null, '\t');
  71                         localStorage['playlist'] = JSON.stringify(this.playlist, null, '\t');
  72                 },
  73                 loadPlaylist: function(){
  74                         this.playlist = localStorage['playlist']?JSON.parse(localStorage['playlist']):this.playlist;
  75                         $.each(this.playlist,function(k,v){
  76                                 thePlaylist.playlistContainer.append(thePlaylist._htmlifyJsonSound(v));
  77                         });
  78                         return this.playlist;
  79                 },
  80                 // Transform HTML5 <audio> to simple JSON object.
  81                 jsonifyAudio: function(audio) {
  82                         var sound = {
  83                                 source :{},
  84                                 title: audio.attr('title'),
  85                                 id:audio.attr('id'),
  86                                 url:audio.attr('data-url'),
  87                                 focus:audio.attr('data-player-focus')
  88                         };
  89                         audio.children('source').each(function(){
  90                                 sound.source[$(this).attr('type')] = $(this).attr('src');
  91                         });
  92                         return sound;
  93                 },
  94                 // Play next sound
  95                 setFocus: function(element) {
  96                         this.isActive = element;
  97                         this.playlistContainer.find('li').each(function(){
  98                                 $(this).removeClass('active');
  99                                 $(this).find('audio').removeAttr('data-player-focus');
 100                         });
 101                         this.isActive.addClass('active').find('audio').attr('data-player-focus',true);
 102                         this._update();
 103                 },
 104                 // Transform JSON sound object to HTML container for playlist.
 105                 _htmlifyJsonSound: function(sound) {
 106                         var container = $('<li>').attr('data-origin',sound.id);
 107                         var audio = $('<audio>',this.options.html5audioOptions)
 108                                 .attr('title',sound.title).hide()
 109                                 .attr('data-url',sound.url);
 110                         $.each(sound.source,function(k,v){
 111                                 var source = $('<source>',{src:v,type:k});
 112                                 audio.append(source);
 113                         });
 114                         audio.on('play',function(){
 115                                 thePlaylist.setFocus(container);
 116                                 container.addClass('playing');
 117                                 playpause.addClass('icon-pause').removeClass('icon-play');
 118                                 thePlaylist.controlButtons['playpause'].removeClass('icon-play').addClass('icon-pause');
 119                                 thePlaylist.afterPlay();
 120                         }).on('pause',function(){
 121                                 $(this).removeClass('playing');
 122                                 playpause.addClass('icon-play').removeClass('icon-pause');
 123                                 thePlaylist.controlButtons['playpause'].removeClass('icon-pause').addClass('icon-play');
 124                         }).on('stop',function(){
 125                                 $(this).trigger('pause');
 126                                 if($(this)[0].currentTime){$(this)[0].currentTime = 0;}
 127                         }).on("ended", function(){
 128                                 thePlaylist.playNext();
 129                         }).on('beforePause',function(){
 130                                 return this;
 131                         }).on('beforePlay',function(){
 132                                 thePlaylist.pauseSounds();
 133                                 return this;
 134                         });
 135                         var controls = $('<span>',{class:'soundControls controls'});
 136                         var link = $('<a>',{href:sound.url,class:'button icon-external-link'});
 137                         var html5 = $('<button>',{title:"Display HTML5 audio",class:'icon-html5',click:function(){
 138                                 audio.toggle();
 139                         }}).hide();
 140                         var remove = $('<button>',{title:"Remove from list",class:'icon-remove',click:function(){
 141                                 container.remove();
 142                                 thePlaylist._update();
 143                         }});
 144                         var stop = $('<button>',{title:"Stop",class:'icon-stop',click:function(){
 145                                 audio.trigger('stop');
 146                         }}).hide();
 147                         var playpause = $('<button>',{title:"Play/Pause",class:'icon-play',click:function(){
 148
 149                                   if (audio[0].paused == false) { audio.trigger('pause');
 150                                   } else {
 151                                         audio.trigger('beforePlay').trigger('play');
 152                                 }
 153                         }});
 154                         controls.append(playpause).append(stop).append(remove).append(html5);
 155                         var title = $('<a>',{title:"More information",href:sound.url,class:"button title",html:sound.title});
 156                         container.append(controls).append(title).append(audio);
 157                         if(sound.focus){thePlaylist.setFocus(container);}
 158                         return container;
 159                 },
 160                 // Create a public method.
 161                 registerAudio: function(audio,success) {
 162                         var audioObj = this.jsonifyAudio(audio);
 163                         var htmlAudio = this._htmlifyJsonSound(audioObj);
 164                         this.playlistContainer.append(htmlAudio);
 165                         this.isLastAdd = htmlAudio;
 166                         if(!this.isActive){this.setFocus(this.isLastAdd);}
 167                         this.options.onAdd(this);
 168                         if(success){success();}
 169                         this._update();
 170                 },
 171                 // Play next sound
 172                 bindControl: function(control,audio,element,options) {
 173                         element.addClass('loading');
 174                         audioID = audio.attr('id');
 175                         //TODO for controls in page content
 176                 },
 177                 // Play next sound
 178                 registerControl: function(name,options) {
 179                         this.controlButtons[name] = $('<button>',options);
 180                         this.controlContainer.append(this.controlButtons[name]);
 181                 },
 182                 // Build controls
 183                 buildPlaylistControls: function() {
 184                         this.controlContainer.empty();
 185                         /*
 186                         this.registerControl('toggleList',{class:"icon-list",click:     function(){
 187                                 thePlaylist.playlistContainer.toggle();
 188                         }});
 189                         this.registerControl('clearList',{class:"icon-trash",click:     function(){
 190                                 thePlaylist.playlistContainer.empty();
 191                                 thePlaylist._update();
 192                         }});
 193                         */
 194                         this.registerControl('previous',{class:"icon-step-backward",click:function(){
 195                                 thePlaylist.playPrevious();
 196                         }});
 197                         this.registerControl('stop',{class:"icon-stop",click:   function(){
 198                                 thePlaylist.stopSounds();
 199                         }});
 200                         this.registerControl('playpause',{class:"icon-play playPause",click:    function(){
 201                                 thePlaylist.playPauseList();
 202                         }});
 203                         this.registerControl('next',{class:"icon-step-forward",click:   function(){
 204                                 thePlaylist.playNext();
 205                         }});
 206                         return true;
 207                 },
 208                 // Play next sound
 209                 afterPlay: function() {
 210                         this.options.onPlay(this);
 211                 },
 212                 // Play next sound
 213                 beforePlay: function() {
 214                         this.stopSounds();
 215                 },
 216                 // Play next sound
 217                 getActive: function() {
 218                         if(!this.isActive){
 219                                 this.isActive = this.playlistContainer.children('li').first();
 220                         }
 221                         return this.isActive;
 222                 },
 223                 // Play next sound
 224                 playPauseList: function() {
 225                         if(this.controlButtons['playpause'].hasClass('icon-play')){
 226                                 this.getActive().find('audio').trigger('beforePlay').trigger('play');
 227                         }else{
 228                                 this.getActive().find('audio').trigger('pause');
 229                         }
 230                         return true;
 231                 },
 232                 // Play next sound
 233                 playPrevious: function() {
 234                         this.getActive().prev().find('audio').trigger('beforePlay').trigger('play');
 235                         return true;
 236                 },
 237                 // Play next sound
 238                 playNext: function() {
 239                         this.getActive().next().find('audio').trigger('beforePlay').trigger('play');
 240                         return true;
 241                 },
 242                 // Play next sound
 243                 playFirst: function() {
 244                         this.playlistContainer.find('audio').first().trigger('beforePlay').trigger('play');
 245                         return true;
 246                 },
 247                 // Play next sound
 248                 playLast: function() {
 249                         this.playlistContainer.find('audio').last().trigger('beforePlay').trigger('play');
 250                         return true;
 251                 },
 252                 // Pause all sounds.
 253                 pauseSounds: function() {
 254                         this.playlistContainer.find('audio').each(function(){$(this).trigger('pause');});
 255                 },
 256                 // stop all sounds.
 257                 stopSounds: function() {
 258                         this.playlistContainer.find('audio').each(function(){$(this).trigger('stop');});
 259                 },
 260         });
 261 })(jQuery);
 262