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From "Vitali Kabak (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLEX-33724) Error in mx:DataGridBase.addClipMask() when using custom item renderer and locked columns
Date Tue, 10 Sep 2013 09:55:51 GMT

    [ https://issues.apache.org/jira/browse/FLEX-33724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13762911#comment-13762911
] 

Vitali Kabak commented on FLEX-33724:
-------------------------------------

What happens inside:

when DataGridBase.addClipMask() method is called after setting lockedColumnCount to 0, it
tries to update clip mask for the last row of DataGrid. Method updates clip maskt for both
normal columns and locked columns, but lockedColumnContent.listItems has less rows then non-locked
listItems. DataGridBase.addClipMask() seems to be the only method that doesn't check (lockedColumnCount
> 0) before doing anything to lockedColumnContent.listItems.
                
> Error in mx:DataGridBase.addClipMask() when using custom item renderer and locked columns
> -----------------------------------------------------------------------------------------
>
>                 Key: FLEX-33724
>                 URL: https://issues.apache.org/jira/browse/FLEX-33724
>             Project: Apache Flex
>          Issue Type: Bug
>          Components: mx: DataGrid
>    Affects Versions: Adobe Flex SDK 4.6 (Release), Apache Flex 4.10.0
>         Environment: Windows
>            Reporter: Vitali Kabak
>         Attachments: DataGridTest.mxml
>
>
> When using MX DataGrid with custom item renderer and locked columns, an error is thrown
after changing horizontalScrollPolicy.
> See attached file for application example.
> How to reproduce:
> Run the app, click "Click Twice" button 2 times (not double-click).
> Apache Flex 4.9.1 is also affected, but I didn't find it in the list.

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