Devin created FLEX-34741:
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Summary: Spark DataGrid Drag and Drop non functioning
Key: FLEX-34741
URL: https://issues.apache.org/jira/browse/FLEX-34741
Project: Apache Flex
Issue Type: Bug
Components: Spark: DataGrid
Affects Versions: Apache Flex 4.14.0
Reporter: Devin
Description
Dropping a dragged item onto the grid does not work. When calculating the
DropLocation (in dragEnter, dragOver, dragDrop handlers) it falls through to
LayoutBase.calculateDropIndex which simply executes "return
target.numElements;" That's clearly not how the dropIndex should be calculated
on the grid. The GridLayout class should be overriding this method and
calculating it correctly.
Furthermore, upon trying to fix this issue (which is more complicated than it
should be because DataGrid.calculateDropPosition() is marked as private) the
DataGrid.calculateDropPosition() does not perform a null check on the
DropLocation (which is valid value).
Steps to Reproduce
1. Create a DataGrid with dragEnabled, dragMoveEnabled, and dropEnabled all set
to true.
2. Try dragging rows around and dropping them.
Environment
Windows 8, Apache Flex 4.14
Expected Behavior
Seeing the drop indicator.
The expected behavior of dragging a row and dropping it in another location.
Actual Behavior
No drop indicator. Dropping a row does nothing.
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