[svn:fx-3.x] 12301: Clean up lastSystemManager reference when SWFLoader unloads a SWF.

Question

Revision: 12301
Revision: 12301
Author:   [email protected]
Date:     2009-11-30 14:52:14 -0800 (Mon, 30 Nov 2009)
Log Message:
Clean up lastSystemManager reference when SWFLoader unloads a SWF.
When SWFLoader unloads itself null out SystemManager.lastSystemManager reference if the reference is the content it loaded. This will prevent SWFLoader leak reports when simply loading and unloading a swf.
Move the removeInitSystemManagerCompleteListener() code before we unload because the contentLoaderInfo is destroyed by the time we get the unload message.
Add code to prevent double loading.
QE notes: None.
Doc notes: None.
Bugs: SDK-18076
Reviewer: Alex
Tests run: checkintests, MarshallPlan, components/SWFLoader
Is noteworthy for integration: no
Ticket Links:
    http://bugs.adobe.com/jira/browse/SDK-18076
Modified Paths:
    flex/sdk/branches/3.x/frameworks/projects/framework/src/mx/controls/SWFLoader.as

Answer 1

Hello,
using that page as guide:
http://help.adobe.com/en_US/FlashPlatform/beta/reference/actionscript/3/flash/events/Uncau ghtErrorEvent.html#includeExamplesSummary
(last sample on where to insert handlers) what about:
<s:SWFLoader id="swfLoader" init="swfLoaderInitHandler(event)" source="B.swf"/>
and:
protected function swfLoaderInitHandler(event:Event):void
     if(!swfLoader.content) return;
     swfLoader.content.loaderInfo.uncaughtErrorEvents.addEventListener(UncaughtErrorEvent.UNCAU GHT_ERROR,
          uncaughtErrorHandler);
protected function uncaughtErrorHandler(errorEvent:UncaughtErrorEvent):void
     if(errorEvent.error is Error)
          var e:Error = errorEvent.error as Error;
          // my error is 1009 - it is expected here
          const NULL_ERROR:uint = 1009;
          if(e.errorID == NULL_ERROR)
               errorEvent.preventDefault();
               Alert.show(e.errorID+" "+e.message);
          // else fall through
     // else fall through
B is supposed to fail:
private var emptyObject:Object = null;
public function B()
     flash.utils.setTimeout(throwErrorNow, 100);
protected function throwErrorNow():void
     emptyObject.numericValue();
regards,
Peter