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https://issues.apache.org/jira/browse/FLEX-34355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14220837#comment-14220837
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Alexander Mazuruk commented on FLEX-34355:
------------------------------------------
That is not a PopupManager case at all. we are talking about this sample from
ActiveWindowManager:
private function findHighestModalForm():int
{
var index:int = rc.getChildIndex(f as DisplayObject); // You perfectly know
that this call will throw an exception if unsuccessful, right?
// ok, IChildList interface has .contains() method, what is the purpose for
this method at all? If you are not using it to pre-check child existence.
// Let's mind logically, if you insist that calling .contains() will degrade
performance, let's remove this method away, why we should have it if it slow
and useless?
if (index > 0)
{
}
> ActiveWindowManager, findHighestModalForm issue
> -----------------------------------------------
>
> Key: FLEX-34355
> URL: https://issues.apache.org/jira/browse/FLEX-34355
> Project: Apache Flex
> Issue Type: Bug
> Components: .Unspecified - Framework, Runtime Exceptions
> Affects Versions: Apache Flex 4.12.0, Apache Flex 4.13.0
> Reporter: Alexander Mazuruk
> Assignee: Alex Harui
>
> We have a lot of modal messageBoxes popped out on the stage, and we are
> trying to close them one by one, and for the second closed dialog we are
> facing this issue. Modal form was removed from the stage faster than
> mouseClickhandler from SystemManager was called actually.
> IChildList interface has .contains() method, Why in the world you are not
> using it?
> This code fragment must be fixed:
> private function findHighestModalForm():int
> {
> /////////////////////////////////////////
> var index:int = rc.getChildIndex(f as
> DisplayObject);
> if (index > 0)
> {
> }
> /////////////////////////////////////////
> }
> As follows:
> private function findHighestModalForm():int
> {
> /////////////////////////////////////////
> var index:int = rc.contains(f as DisplayObject) ? rc.getChildIndex(f as
> DisplayObject) : -1;
> if (index > 0)
> {
> }
> /////////////////////////////////////////
> }
> Otherwise we have this error pops out when we don't have a child in the
> IChildList and code is trying to fetch it out, but it's not there already.
> ArgumentError: Error #2025: The supplied DisplayObject must be a child of the
> caller.
> at flash.display::DisplayObjectContainer/getChildIndex()
> at
> mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::rawChildren_getChildIndex()[/Users/justinmclean/Documents/ApacheFlex4.12.0/frameworks/projects/framework/src/mx/managers/SystemManager.as:2195]
> at
> mx.managers::SystemRawChildrenList/getChildIndex()[/Users/justinmclean/Documents/ApacheFlex4.12.0/frameworks/projects/framework/src/mx/managers/SystemRawChildrenList.as:189]
> at
> mx.managers.systemClasses::ActiveWindowManager/findHighestModalForm()[/Users/justinmclean/Documents/ApacheFlex4.12.0/frameworks/projects/framework/src/mx/managers/systemClasses/ActiveWindowManager.as:441]
> at
> mx.managers.systemClasses::ActiveWindowManager/mouseDownHandler()[/Users/justinmclean/Documents/ApacheFlex4.12.0/frameworks/projects/framework/src/mx/managers/systemClasses/ActiveWindowManager.as:469]
> at flash.events::EventDispatcher/dispatchEventFunction()
> at flash.events::EventDispatcher/dispatchEvent()
> at
> mx.core::UIComponent/dispatchEvent()[/Users/justinmclean/Documents/ApacheFlex4.12.0/frameworks/projects/framework/src/mx/core/UIComponent.as:13682]
> at
> mx.managers::SystemManager/mouseEventHandler()[/Users/justinmclean/Documents/ApacheFlex4.12.0/frameworks/projects/framework/src/mx/managers/SystemManager.as:2926]
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