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From "BERTOLINO (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLEX-34741) Spark DataGrid Drag and Drop non functioning
Date Thu, 30 Jul 2015 18:43:04 GMT

    [ https://issues.apache.org/jira/browse/FLEX-34741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14648111#comment-14648111

BERTOLINO commented on FLEX-34741:

Here it is, as described in the description of this issue the drag and drop is not functionning

1°) no drop location indicator when dragging
2°) item always take position on the 2nd position.

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" width="100%" height="100%" minWidth="955"
minHeight="600" initialize="application1_initializeHandler(event)">
			import mx.events.FlexEvent;
			public var dataProvider:ArrayCollection = new ArrayCollection();
			protected function application1_initializeHandler(event:FlexEvent):void
				for (var x:int = 1 ; x <= 10; x++)
					var anObj:Object = new Object();
					anObj["label"]="label "+x;
	<s:DataGrid width="100%" height="100%" dataProvider="{dataProvider}" dragEnabled="true"
dropEnabled="true" dragMoveEnabled="true">
				<s:GridColumn dataField="id" editable="false" rendererIsEditable="false"/>
				<s:GridColumn dataField="label" editable="false" rendererIsEditable="false"/>

> 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
> 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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