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From "Devin Holloway (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLEX-34741) Spark DataGrid Drag and Drop non functioning
Date Thu, 30 Jul 2015 20:51:04 GMT

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

Devin Holloway updated FLEX-34741:
----------------------------------
    Attachment: DragDropGrid.as

temporary fix for drag drop in data grid

> 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
>              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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