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From "Marcus Wilkinson (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (FLEX-33722) Dragging a row with an itemRenderer which extends DefaultGridItemRenderer causes null pointer in mx.utils::MatrixUtil$/isDeltaIdentity()
Date Tue, 10 Sep 2013 08:07:53 GMT

    [ https://issues.apache.org/jira/browse/FLEX-33722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13762835#comment-13762835
] 

Marcus Wilkinson edited comment on FLEX-33722 at 9/10/13 8:06 AM:
------------------------------------------------------------------

I think there is still an issue here:
https://github.com/apache/flex-sdk/blob/develop/frameworks/projects/spark/src/spark/components/gridClasses/DataGridDragProxy.as#L162
in which element.hasLayoutMatrix3D is false, however, element.getLayoutMatrix() returns null
                
      was (Author: marcus_sparkus):
    I think there is still an issue here:
https://github.com/apache/flex-sdk/blob/develop/frameworks/projects/spark/src/spark/components/gridClasses/DataGridDragProxy.as#L162
in which element.hasLayoutMatrix is false, however, element.getLayoutMatrix() returns null
                  
> Dragging a row with an itemRenderer which extends DefaultGridItemRenderer causes null
pointer in mx.utils::MatrixUtil$/isDeltaIdentity()
> ----------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: FLEX-33722
>                 URL: https://issues.apache.org/jira/browse/FLEX-33722
>             Project: Apache Flex
>          Issue Type: Bug
>          Components: Drag and Drop, Spark: DataGrid
>    Affects Versions: Apache Flex 4.10.0
>            Reporter: Marcus Wilkinson
>            Assignee: Justin Mclean
>              Labels: datagrid, drag, itemrenderer, nullpointerexception
>             Fix For: Apache Flex 4.11.0
>
>         Attachments: FLEX-33722.mxml
>
>
> See attached for an example. I think this is down to two things:
> https://github.com/apache/flex-sdk/blob/develop/frameworks/projects/spark/src/spark/components/gridClasses/DataGridDragProxy.as
> element.getLayoutMatrix() is returning null. Doing a check for a null matrix, and returning
an identity matrix seems to help
> https://github.com/apache/flex-sdk/blob/develop/frameworks/projects/spark/src/spark/components/gridClasses/DataGridDragProxy.as#L201
> I think this should be inside the loop, (at line 198)

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