Re: Pass data through event.setData() in 2.4 Drag and Drop

Hi Colin, maybe this document could help you :
http://static.googleusercontent.com/external_content/untrusted_dlcp/www.google.com/fr//events/io/2011/static/presofiles/gwt_html5_a_web_develops_dream.pdf
look at the DND section.

The data you are passing is to be received by the "drop target", not
the widget you are dragging.

In brief you need to:
- create draggable widget : setDraggable + addDragStartHandler
- create drop target : addDragOverHandler, addDropHandler

Hope this helps ;)

Ludovit

On 11 fév, 15:24, colin <colinzhao...@yahoo.com> wrote:
> Has anyone used newDragandDropfeature with 2.4?  I have it work
> all fine except the string data set on the event in DragStartHandler
> is not passed to the event in other handlers.  getData always returns
> null.
>
>                 navLabel.getElement().setDraggable(Element.DRAGGABLE_TRUE);
>                 navLabel.addDragStartHandler(new DragStartHandler() {
>
>                         @Override
>                         public void onDragStart(DragStartEvent event) {
>                                 event.setData("text", navContent.getId()); //I want to pass the
> obejct id
>
>                                 navLabel.addStyleName("s-ContentTOCItem");
>                                 event.getDataTransfer().setDragImage(navLabel.getElement(),
>                                                 10, 10);
>                                 navLabel.removeStyleName("s-ContentTOCItem");
>                                 String text = event.getData("text"); //Since I am getting the null
> data in other DnD event, I want to test it here
>                                 System.out.println("Dragtext: "+text); //text is null. Data is
> not stored.
>
>                         }
>
>                 });

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