Drag & Drop in AIR

I just ran into a great article by Alastair outlining the use of Native Drag & Drop functionality in AIR (w/ a little RoR mixin). The documentation for Native D&D is very spotty, there are more mistakes then anything else. So, if you haven't learned the hard way yet, let me make your life a little easier: http://blog.vixiom.com/2007/06/29/merb-on-air-drag-and-drop-multiple-file-upload/

Here's a simple test application you can use to get started:

<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init(event)">

<mx:Script>
<![CDATA[
import mx.events.DragEvent;
import flash.desktop.DragManager;
import flash.desktop.DragActions;
import flash.events.NativeDragEvent;
import flash.desktop.TransferableFormats;
import flash.filesystem.File;

private function init(e:Event):void
{
 //add the event handlers
 this.addEventListener(NativeDragEvent.NATIVE_DRAG_ENTER, onEnter);
 dropPanel.addEventListener(NativeDragEvent.NATIVE_DRAG_DROP, onDrop);
}

public function onEnter(event:NativeDragEvent):void
{ 
 //Check to see if the drag item is the right format
 if(event.transferable.hasFormat(TransferableFormats.FILE_LIST_FORMAT))
 {
  DragManager.acceptDragDrop(dropPanel);
 }
}

public function onDrop(event:NativeDragEvent):void{
    trace("dropped");
 // Cast the drag & drop data as an array
 var files:Array = event.clipboard.dataForFormat(flash.desktop.ClipboardFormats.FILE_LIST_FORMAT) as Array;
 for each (var f:File in files)
          {
             // check out the file URL
    trace(f.url);
          }
}
]]>
</mx:Script>

<mx:Panel id="dropPanel"
 top="10"
 left="10"
 height="100"
 width="100"
 title="Drop Files Here"
 backgroundColor="#FFF">


</mx:Panel>

</mx:WindowedApplication>

Also worth a read: http://coenraets.org/blog/2007/06/air-to-desktop-drag-and-drop-two-simple-utility-classes/

I'll let you know why I'm reading up on D&D in a couple days :)

Cheers,
Todd

***Updated for AIR Beta 2***