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From "Mark Kessler (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLEX-34741) Spark DataGrid Drag and Drop non functioning
Date Tue, 04 Aug 2015 03:04:05 GMT

    [ https://issues.apache.org/jira/browse/FLEX-34741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14653001#comment-14653001
] 

Mark Kessler commented on FLEX-34741:
-------------------------------------

Corrected the dropIndicator.  It will now use the grid.layout.centergridview.layout instead
of the grid.layout directly.  Also removed the calculateDropLocation from the DataGrid as
it is no longer used.

passed test with mini_run /componpents/DataGrid


> 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
>         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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