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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