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https://issues.apache.org/jira/browse/FLEX-33875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13813775#comment-13813775
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Aleksey commented on FLEX-33875:
--------------------------------
No, there is no hostComponent property in the base skin class. This applies to
the Spark skins as well(You have to use [HostComponent] metadata and compiler
generates it for you). I think hostComponent was not added as a property to the
base class to provide strongly typed hostComponent property. For example, if
you have button skin you want hostComponent to be Button and not generic
SkinnableComponent.
> Runtime error #1069 in MobileSkin class on focus out
> ----------------------------------------------------
>
> Key: FLEX-33875
> URL: https://issues.apache.org/jira/browse/FLEX-33875
> Project: Apache Flex
> Issue Type: Bug
> Components: Skinning
> Affects Versions: Apache Flex 4.10.0, Apache Flex 4.11.0
> Reporter: Aleksey
> Assignee: Justin Mclean
> Labels: easyfix
> Fix For: Apache Flex 4.12.0
>
>
> Hiting tab to move focus away from component which has pure AS skin without
> hostComponent property defined results in runtime error.
> Error happens in the endHighlightBitmapCapture of MobileSkin:
> public function endHighlightBitmapCapture():Boolean
> {
> var exclusions:Array = focusSkinExclusions;
> if (!exclusions)
> {
> if (this["hostComponent"] is SkinnableComponent)
> exclusions =
> SkinnableComponent(this["hostComponent"]).suggestedFocusSkinExclusions;
> }
> Note that property accessed as dynamic property but there is no check for
> property existence. It should be there just like in case of
> beginHighlightBitmapCapture:
> public function beginHighlightBitmapCapture():Boolean
> {
> var exclusions:Array = focusSkinExclusions;
> if (!exclusions)
> {
> if (("hostComponent" in this) && this["hostComponent"] is
> SkinnableComponent)
> exclusions =
> SkinnableComponent(this["hostComponent"]).suggestedFocusSkinExclusions;
> }
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