extend Ext.util.Observable rather than reinventing

deluge/ui/web/js/Deluge.Events.js

@@ -18,66 +18,24 @@
  *		The Free Software Foundation, Inc.,
  *		51 Franklin Street, Fifth Floor
  *		Boston, MA  02110-1301, USA.
- **
+ *
  * @class Deluge.Events
  * <p>Class for holding global events that occur within the UI.</p>
  * @singleton
  */
-Deluge.Events = {
 
-	// private
-	__events: {},
+(function() {
+    Events = Ext.extend(Ext.util.Observable, {
+        constructor: function() {
+            Events.superclass.constructor.call(this);
+        },
         
-	/**
-	 * Fires an event, calling any listening event handlers and passing the
-	 * given arguments.
-	 * @param {String} name The name of the event to call.
-	 * @param eventArg1 (optional)
-	 * @param eventArg2 (optional)...
-	 */
-	fire: function() {
-		var args = [];
-		Ext.each(arguments, function(arg) {
-			args.push(arg);
-		});
-		
-		var eventName = args.shift();
-		if (!this.__events[eventName]) return;
-		
-		var eventArgs = arguments;
-		Ext.each(this.__events[eventName], function(cb) {
-			try {
-				cb.fn.apply(cb.scope || this, eventArgs);
-			} catch (e) {
-				alert(e);
-			}
-		});
-	},
-	
-	/**
-	 * Attachs an event listener.
-	 *
-	 */
-	on: function(eventName, fn, scope) {
-		var e = this.__events[eventName] || new Array();
-		e.push({
-			'fn': fn,
-			'scope': scope
-		});
-		this.__events[eventName] = e;
-	},
-	
-	/**
-	 * Removes an event listener.
-	 */
-	removeListener: function(eventName, fn) {
-		if (!this.__events[eventName]) return;
-		this.__events[eventName].remove(fn);
-	},
-	
-	/**
-	 * Alias to removeListener
-	 *
-	 */
-	un: this.removeListener
-};
+        addListener: function(eventName, fn, scope, o) {
+            this.addEvents(eventName);
+            Events.superclass.addListener.call(this, eventName, fn, scope, o);
+        }
+    });
+    Events.prototype.on = Events.prototype.addListener
+    Events.prototype.fire = Events.prototype.fireEvent
+    Deluge.Events = new Events();
+})();