[jira] [Resolved] (FLEX-34741) Spark DataGrid Drag and Drop non functioning

["Mark Kessler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLEX-34741?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mark Kessler resolved FLEX-34741.
---------------------------------
       Resolution: Fixed
    Fix Version/s: Apache Flex 4.15.0

> 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
>              Labels: drag&drop
>             Fix For: Apache Flex 4.15.0
>
>         Attachments: 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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