[FLEX-33705] DataGridDragProxy created item renderer without a reference to the column

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Apache Flex 4.10.0
• Fix Version/s: Apache Flex 4.11.0
• Component/s: Drag and Drop, Spark: DataGrid
• Labels: datagrid drag itemrenderer
• Assignee: Justin Mclean
• Reporter: Marcus Wilkinson
• Created: 04/Sep/13 10:01
• Updated: 12/Sep/13 01:55
• Resolved: 12/Sep/13 01:55

Description

spark.components.gridClasses.DataGridDragProxy:createChildren()

This method instantiates IGridItemRenderer instances for visual feedback on dragging from a spark datagrid.

IGridItemRenderer has a property column:GridColumn which is not set and will be null for any item renderer created through this mechanism.

Since we have a reference to the column at instantiation time I don't see any problem with assigning it to the instantiated item renderer.

Attached is an example of the issue, and a patch which will assign the column to the item renderer instance

Issue Links

• is duplicated by: FLEX-33712 DataGrid with itemRenderer Drag and Drop error
• relates to: FLEX-33722 Dragging a row with an itemRenderer which extends DefaultGridItemRenderer causes null pointer in mx.utils::MatrixUtil$/isDeltaIdentity()