examples/hoofbeats/javascripts/library.js

   1 /* vi: set et sw=4 ts=4 si: */
   2 $(function() {
   3     var library = function() {
   4         // For readability:
   5         this.initialized = false;
   6
   7         this.fetchCount = 100;
   8         this.fetchOffset = 0;
   9         this.mediaItems = [];
  10
  11         this.initialize = function() {
  12             if (this.initialized)
  13                 return;
  14
  15             if (window.tizen === undefined) {
  16                 throw Error("You need the Tizen web API  to run Hoofbeats.");
  17             }
  18
  19             this.audioTypeFilter = new tizen.AttributeFilter(
  20                 "type", "EXACTLY", "AUDIO");
  21             this.videoTypeFilter = new tizen.AttributeFilter(
  22                 "type", "EXACTLY", "VIDEO");
  23             this.typeFilter = new tizen.CompositeFilter(
  24                 "UNION", [this.audioTypeFilter, this.videoTypeFilter]);
  25
  26             this.sortMode = new tizen.SortMode("trackNumber", "ASC");
  27             this.mediaSource = tizen.mediacontent.getLocalMediaSource();
  28         };
  29
  30         this.scan = function() {
  31             this.initialize()
  32
  33             this.mediaItems = [];
  34             this.fetchOffset = 0;
  35
  36             this.mediaSource.findItems(
  37                 this.findItemsCB.bind(this),
  38                 this.errorCB.bind(this),
  39                 null,
  40                 this.typeFilter,
  41                 this.sortMode,
  42                 this.fetchCount,
  43                 this.fetchOffset);
  44         };
  45
  46         this.errorCB = function(error) {
  47             console.log("Error: " + error.name);
  48             throw new Error(error.name);
  49         };
  50
  51         this.findItemsCB = function(items) {
  52             var self = this;
  53
  54             items.forEach(function(item, index, items) {
  55                 self.mediaItems.push(item);
  56                 window.MusicBrainz.getArtist(item.name).done(function(data) {
  57                     console.log(data);
  58                 });
  59             });
  60
  61             if (items.length == this.fetchCount) {
  62                 // There *might* be more items.
  63                 this.fetchOffset += this.fetchCount;
  64                 this.mediaSource.findItems(
  65                     this.findItemsCB.bind(this),
  66                     this.errorCB.bind(this),
  67                     null,
  68                     this.typeFilter,
  69                     this.sortMode,
  70                     this.fetchCount,
  71                     this.fetchOffset);
  72             }
  73         };
  74     };
  75
  76     library.prototype = {
  77         set initialized(value) {this._initialized = value; },
  78         get initialized() { return this._initialized; }
  79     };
  80
  81     window.HoofbeatsLibrary = library;
  82 });