examples/hoofbeats/javascripts/library.js

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