[jira] [Created] (FLEX-33722) Dragging a row with an itemRenderer which extends DefaultGridItemRenderer causes null pointer in mx.utils::MatrixUtil$/isDeltaIdentity()

["Marcus Wilkinson (JIRA)" <ji...@apache.org>]

Marcus Wilkinson created FLEX-33722:
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             Summary: 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
             Fix For: Apache Flex 4.11.0


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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