[FLEX-16853] Calling Alert.Show from titleWindow throws a RTE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK 3.2 (Release)
• Fix Version/s: Adobe Flex SDK 3.3 (Release)
• Component/s: mx: Alert
• Environment: Affected OS(s): All OS Platforms; Browser: Internet Explorer 7.x; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 09/Dec/08 16:39
• Updated: 31/Jan/09 17:23
• Resolved: 19/Jan/09 16:43

Description

Steps to reproduce:
1. Compile and run attached MXML file (or run SWF file).
2. Click the "Click to open the TitleWindow container" button to launch the popup.
3. Click the "OK" button without typing anything into the text input field.

Actual Results:
RTE:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.core::UIComponent/getVisibleRect()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:9237]
at mx.managers::PopUpManagerImpl/centerPopUp()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\managers\PopUpManagerImpl.as:499]
at mx.managers::PopUpManager$/centerPopUp()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\managers\PopUpManager.as:184]
at mx.controls::Alert$/static_creationCompleteHandler()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\Alert.as:582]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:9298]
at mx.core::UIComponent/set initialized()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:1169]
at mx.managers::LayoutManager/doPhasedInstantiation()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:718]
at Function/http://adobe.com/AS3/2006/builtin::apply()
at mx.core::UIComponent/callLaterDispatcher2()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8628]
at mx.core::UIComponent/callLaterDispatcher()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8568]

Expected Results:
No RTE.

Workaround (if any):
(a) Alert.show("Testing Bug", "Testing Bug", 4, null, AlertHandler); // specify "null" instead of "this".
(b) Remove the popup window after the Alert has been displayed by using callLater():

private function returnName():void {
Alert.show("Testing Bug", "Testing Bug", 4, this, AlertHandler);
callLater(delayedRemovePopup);
}