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Posted to issues@flex.apache.org by "Jan Weber (Jira)" <ji...@apache.org> on 2022/02/21 10:33:00 UTC
[jira] [Updated] (FLEX-34741) Spark DataGrid Drag and Drop non functioning
[ https://issues.apache.org/jira/browse/FLEX-34741?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jan Weber updated FLEX-34741:
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Attachment: DataGridDragDrop.as
> 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
> Assignee: Mark Kessler
> Priority: Major
> Labels: drag&drop
> Fix For: Apache Flex 4.15.0
>
> Attachments: DataGridDragDrop.as, DragDropGrid.as
>
>
> 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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