client/assets/dev/model_applet.js

   1 _kiwi.model.Applet = _kiwi.model.Panel.extend({
   2     // Used to determine if this is an applet panel. Applet panel tabs are treated
   3     // differently than others
   4     applet: true,
   5
   6
   7     initialize: function (attributes) {
   8         // Temporary name
   9         var name = "applet_"+(new Date().getTime().toString()) + Math.ceil(Math.random()*100).toString();
  10         this.view = new _kiwi.view.Applet({model: this, name: name});
  11
  12         this.set({
  13             "name": name
  14         }, {"silent": true});
  15
  16         // Holds the loaded applet
  17         this.loaded_applet = null;
  18     },
  19
  20
  21     // Load an applet within this panel
  22     load: function (applet_object, applet_name) {
  23         if (typeof applet_object === 'object') {
  24             // Make sure this is a valid Applet
  25             if (applet_object.get || applet_object.extend) {
  26
  27                 // Try find a title for the applet
  28                 this.set('title', applet_object.get('title') || 'Unknown Applet');
  29
  30                 // Update the tabs title if the applet changes it
  31                 applet_object.bind('change:title', function (obj, new_value) {
  32                     this.set('title', new_value);
  33                 }, this);
  34
  35                 // If this applet has a UI, add it now
  36                 this.view.$el.html('');
  37                 if (applet_object.view) {
  38                     this.view.$el.append(applet_object.view.$el);
  39                 }
  40
  41                 // Keep a reference to this applet
  42                 this.loaded_applet = applet_object;
  43
  44                 this.loaded_applet.trigger('applet_loaded');
  45             }
  46
  47         } else if (typeof applet_object === 'string') {
  48             // Treat this as a URL to an applet script and load it
  49             this.loadFromUrl(applet_object, applet_name);
  50         }
  51
  52         return this;
  53     },
  54
  55
  56     loadFromUrl: function(applet_url, applet_name) {
  57         var that = this;
  58
  59         this.view.$el.html('Loading..');
  60         $script(applet_url, function () {
  61             // Check if the applet loaded OK
  62             if (!_kiwi.applets[applet_name]) {
  63                 that.view.$el.html('Not found');
  64                 return;
  65             }
  66
  67             // Load a new instance of this applet
  68             that.load(new _kiwi.applets[applet_name]());
  69         });
  70     },
  71
  72
  73     close: function () {
  74         this.view.$el.remove();
  75         this.destroy();
  76
  77         this.view = undefined;
  78
  79         // Call the applets dispose method if it has one
  80         if (this.loaded_applet && this.loaded_applet.dispose) {
  81             this.loaded_applet.dispose();
  82         }
  83
  84         this.closePanel();
  85     }
  86 },
  87
  88
  89 {
  90     // Load an applet type once only. If it already exists, return that
  91     loadOnce: function (applet_name) {
  92
  93         // See if we have an instance loaded already
  94         var applet = _.find(_kiwi.app.panels('applets'), function(panel) {
  95             // Ignore if it's not an applet
  96             if (!panel.isApplet()) return;
  97
  98             // Ignore if it doesn't have an applet loaded
  99             if (!panel.loaded_applet) return;
 100
 101             if (panel.loaded_applet.get('_applet_name') === applet_name) {
 102                 return true;
 103             }
 104         });
 105
 106         if (applet) return applet;
 107
 108
 109         // If we didn't find an instance, load a new one up
 110         return this.load(applet_name);
 111     },
 112
 113
 114     load: function (applet_name) {
 115         var applet;
 116
 117         // Find the applet within the registered applets
 118         if (!_kiwi.applets[applet_name]) return;
 119
 120         // Create the applet and load the content
 121         applet = new _kiwi.model.Applet();
 122         applet.load(new _kiwi.applets[applet_name]({_applet_name: applet_name}));
 123
 124         // Add it into the tab list
 125         _kiwi.app.applet_panels.add(applet);
 126
 127
 128         return applet;
 129     },
 130
 131
 132     register: function (applet_name, applet) {
 133         _kiwi.applets[applet_name] = applet;
 134     }
 135 });