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From "Alex Harui (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLEX-33740) Change UIComponent function removedFromStageHandler from private to protected to allow override
Date Wed, 18 Sep 2013 15:19:51 GMT

    [ https://issues.apache.org/jira/browse/FLEX-33740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13770870#comment-13770870
] 

Alex Harui commented on FLEX-33740:
-----------------------------------

Your first proposal is the safer one.  Even changing all of the classes in the SDK to use
a protected removedFromStageHandler is insufficient.  It is such a likely name of a method
that the odds are that other third parties have handlers of the same name and will be impacted.

And even a name like removeFromStage is risky, so I would suggest something slightly more
obscure.

Note that, in many cases, event handlers of non-bubbling events can be overridden and thus
effectively removed by adding your listener first or using a higher priority and calling stopImmediatePropagation.

                
> Change UIComponent function removedFromStageHandler from private to protected to allow
override
> -----------------------------------------------------------------------------------------------
>
>                 Key: FLEX-33740
>                 URL: https://issues.apache.org/jira/browse/FLEX-33740
>             Project: Apache Flex
>          Issue Type: Improvement
>          Components: .Unspecified - Framework
>    Affects Versions: Apache Flex 4.10.0
>         Environment: Gui framework
>            Reporter: David Lantier
>              Labels: features, performance
>             Fix For: Apache Flex 4.11.0
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> It would be more safe and faster if it was possible to override the function UIComponent::removedFromStageHandler
(and also, remove) instead to have to add and remove events listeners for those who extends
UI classes. 
> Have to check if new proposed method name "removedFromStage" not used by any component,
or choose another.
> Example:
> private function removedFromStageHandler(event:Event):void
>     {
>         _systemManagerDirty = true;
> 	removedFromStage();     // proposition: add this call
>     }
> // proposition: new function protected, dedicated to override
> /** Override this allow to be called when this is removing from stage. Avoids to have
to listen REMOVED_FROM_STAGE event. */
> protected function removedFromStage():void {}

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