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From "Borek Bernard (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (FLEX-34040) GroupBase incorrectly computes hasMouseListeners which breaks e.g. mouseEnabledWhereTransparent
Date Mon, 03 Mar 2014 00:19:21 GMT

    [ https://issues.apache.org/jira/browse/FLEX-34040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13917638#comment-13917638
] 

Borek Bernard edited comment on FLEX-34040 at 3/3/14 12:18 AM:
---------------------------------------------------------------

I encountered this bug in an application where my component wasn't in a complete control of
all of the listeners - they were added dynamically by various parts of the application. I
was just able to ensure that there is at least one click handler in which case the click handler
should fire and it didn't. Just having a single counter for all the possible mouse events
is a quick and dirty implementation, IMO, not a bullet-proof one.


was (Author: borekb):
I encountered this bug in an application where my component wasn't in a complete control of
all of the listeners - they were added dynamically by various parts of the application. I
was just able to ensure that there is at least one click handler in which case the click handler
should fire and it didn't. Just having a single counter for all the possible mouse events
is a quick and dirty implementation, IMO, not a correct one.

> GroupBase incorrectly computes hasMouseListeners which breaks e.g. mouseEnabledWhereTransparent
> -----------------------------------------------------------------------------------------------
>
>                 Key: FLEX-34040
>                 URL: https://issues.apache.org/jira/browse/FLEX-34040
>             Project: Apache Flex
>          Issue Type: Bug
>          Components: Spark: Group
>    Affects Versions: Apache Flex 4.11.0
>            Reporter: Borek Bernard
>              Labels: easytest
>         Attachments: Flex34040Demo.fxp
>
>
> The `GroupBase#hasMouseListeners` property is vital for things like dispatching mouse
events on transparent parts on the group, however, the current algo is incorrect - it just
increments a counter every time addEventListener() is called and decrements it when removeEventListener()
is called.
> That means that when I call addEventListener("click") and then removeEventListener("someOtherMouseEvent"),
the hasMouseListeners property will be false even though I have an active "click" listener.



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