2.0.4 Dissallowed re-registration of Mediators in View.registerMediator.

      For more on this bug, see:
      http://forums.puremvc.org/index.php?topic=372
      Modified View.notifyObservers to notify from a copy of the 
      observer list rather than the actual observer list, which may
      change during the notification loop. For more on this bug, see:
      http://forums.puremvc.org/index.php?topic=490

Author: Cliff Hall

src/org/puremvc/as3/core/View.as

@@ -107,9 +107,22 @@ package org.puremvc.as3.core
 		public function notifyObservers( notification:INotification ) : void
 		{
 			if( observerMap[ notification.getName() ] != null ) {
-				var observers:Array = observerMap[ notification.getName() ] as Array;
-				for (var i:Number = 0; i < observers.length; i++) {
-					var observer:IObserver = observers[ i ] as IObserver;
+				
+				// Get a reference to the observers list for this notification name
+				var observers_ref:Array = observerMap[ notification.getName() ] as Array;
+
+				// Copy observers from reference array to working array, 
+				// since the reference array may change during the notification loop
+   				var observers:Array = new Array(); 
+   				var observer:IObserver;
+				for (var i:Number = 0; i < observers_ref.length; i++) { 
+					observer = observers_ref[ i ] as IObserver;
+					observers.push( observer );
+				}
+				
+				// Notify Observers from the working array				
+				for (i = 0; i < observers.length; i++) {
+					observer = observers[ i ] as IObserver;
 					observer.notifyObserver( notification );
 				}
 			}
@@ -163,6 +176,9 @@ package org.puremvc.as3.core
 		 */
 		public function registerMediator( mediator:IMediator ) : void
 		{
+			// do not allow re-registration (you must to removeMediator fist)
+			if ( mediatorMap[ mediator.getMediatorName() ] != null ) return;
+			
 			// Register the Mediator for retrieval by name
 			mediatorMap[ mediator.getMediatorName() ] = mediator;
 

version.txt

@@ -1,13 +1,21 @@
 PureMVC - Copyright(c) 2006-08 Futurescale, Inc., Some rights reserved.
 --------------------------------------------------------------------------
-Release Date: 03/17/08
+Release Date: 08/14/08
     Platform: ActionScript 3 (Flash, Flex, AIR)
      Version: 2 
     Revision: 0
-       Minor: 3    
+       Minor: 4    
       Author: Cliff Hall <[email protected]>
      License: Creative Commons Attribution 3.0 United States License
 --------------------------------------------------------------------------
+2.0.4 Dissallowed re-registration of Mediators in View.registerMediator. 
+      For more on this bug, see:
+      http://forums.puremvc.org/index.php?topic=372
+      Modified View.notifyObservers to notify from a copy of the 
+      observer list rather than the actual observer list, which may
+      change during the notification loop. For more on this bug, see:
+      http://forums.puremvc.org/index.php?topic=490
+
 2.0.3 Added notifyObservers back to IFacade, where it is required
       if you are sending custom Notifications. No unit tests required.