[FLEX-23638] Call to PopUpManager.createPopUp crashes Flex app with Flex SDK 4.x (code worked fine with Flex SDK 3.x)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: Adobe Flex SDK 4.1 (Release)
• Component/s: PopUp Manager
• Environment: Affected OS(s): Windows; Affected OS(s): Windows XP; Browser: Other (specify version); Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 31/Mar/10 05:45
• Updated: 20/Apr/10 11:34
• Resolved: 20/Apr/10 10:44

Description

Steps to reproduce:

[Using Flash Builder 4 with Flex SDK 4.1.0.15132 and Flex 3 compatibility mode]

1. make a call to PopUpManager.createPopUp with a custom component, such as
var urlWindow:URLWindow = URLWindow(PopUpManager.createPopUp( this, URLWindow , true));

Code for URLWindow custom component:

==============================================
<?xml version="1.0" encoding="utf-8"?>
<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml"
title="URL attached to node" x="168" y="86">

<mx:Metadata>
[Event(name="urlAdded", type="events.URLUpdateEvent")]
</mx:Metadata>

<mx:Script>
<![CDATA[
import mx.managers.PopUpManager;
import mx.controls.Text;
import events.URLUpdateEvent;

public function set url(url:String):void{
if (url == "")

{ urlText.text = "http://"; }

else

{ urlText.text = url; }

this.stage.focus = urlText;
urlText.selectionBeginIndex = urlText.selectionEndIndex = urlText.text.length;
}

// Event handler for the OK button.
private function returnURL():void {
var url:String = urlText.text;
if (url != null && url != "http://")

{ var event:URLUpdateEvent = new URLUpdateEvent(URLUpdateEvent.URL_ADDED, url); dispatchEvent(event); }

PopUpManager.removePopUp(this);
}
]]
>
</mx:Script>

<mx:HBox>
<mx:Label text="Enter url: "/>
<mx:TextInput id="urlText" text="" width="100%"/>
</mx:HBox>

<mx:HBox>
<mx:Button label="OK" click="returnURL();"/>
<mx:Button label="Cancel" click="PopUpManager.removePopUp(this);"/>
</mx:HBox>

</mx:TitleWindow>
==============================================

Actual Results:
Flex app crashes with a Type Error #1009. Both the URLWindow and the PopUpManager exist immediately before:

trace(URLWindow, PopUpManager) // yields: [class URLWindow] [class PopUpManager]

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.managers::PopUpManagerImpl/http://www.adobe.com/2006/flex/mx/internal::createModalWindow()[E:\dev\4.x\frameworks\projects\framework\src\mx\managers\PopUpManagerImpl.as:686]
at mx.managers::PopUpManagerImpl/addPopUp()[E:\dev\4.x\frameworks\projects\framework\src\mx\managers\PopUpManagerImpl.as:401]
at mx.managers::PopUpManagerImpl/createPopUp()[E:\dev\4.x\frameworks\projects\framework\src\mx\managers\PopUpManagerImpl.as:237]
at mx.managers::PopUpManager$/createPopUp()[E:\dev\4.x\frameworks\projects\framework\src\mx\managers\PopUpManager.as:139]
at modules::Vicos/listActionSelected()[C:\Documents and Settings\thokol\My Documents\Adobe Flash Builder 4\VicosLexus\src\modules\Vicos.mxml:520]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\UIComponent.as:12517]
at mx.controls.listClasses::ListBase/mouseUpHandler()[E:\dev\4.x\frameworks\projects\framework\src\mx\controls\listClasses\ListBase.as:10263]
at mx.controls::List/mouseUpHandler()[E:\dev\4.x\frameworks\projects\framework\src\mx\controls\List.as:2469]

Why does the stack trace contain paths such as E:\dev\4.x\frameworks (E: on my computer is the disk drive)? This looks quite weird to me. Did someone forget to remove absolute dev paths before publishing the Flex 4.x SDK?

The problem appears independently from the browser used.

Expected Results:
Custom component should be dynamically added as a popup

Workaround (if any):
none yet