DragAndDropExampleClass

package
{
	import flash.desktop.ClipboardFormats;
	import mx.managers.DragManager;
	import flash.events.NativeDragEvent;
	import flash.desktop.NativeDragManager;
	import flash.filesystem.File;
	import flash.filesystem.FileMode;
	import flash.filesystem.FileStream;

	public class DragAndDropExampleClass
	{


		public function DragAndDropExampleClass()
		{

			//called when app has initialized and is about to display
			private function onCreationComplete():void
			{
				//register for the drag enter event
				addEventListener(NativeDragEvent.NATIVE_DRAG_ENTER, onDragIn);

				//register for the drag drop event
				addEventListener(NativeDragEvent.NATIVE_DRAG_DROP, onDragDrop);
			}

			//called when the user drags an item into the component area
			private function onDragIn(e:NativeDragEvent):void
			{
				//check and see if files are being drug in
				if(e.clipboard.hasFormat(ClipboardFormats.FILE_LIST_FORMAT))
				{
					//get the array of files
					var files:Array = e.clipboard.getData(ClipboardFormats.FILE_LIST_FORMAT) as Array;

					//make sure only one file is dragged in (i.e. this app doesn't
					//support dragging in multiple files)
					if(files.length == 1)
					{
						//accept the drag action
						NativeDragManager.acceptDragDrop(this);
					}
				}
			}

			//called when the user drops an item over the component
			private function onDragDrop(e:NativeDragEvent):void
			{
				//get the array of files being drug into the app
				var arr:Array = e.clipboard.getData(ClipboardFormats.FILE_LIST_FORMAT) as Array;

				//grab the files file
				var f:File = File(arr[0]);

				//create a FileStream to work with the file
				var fs:FileStream = new FileStream();

				//open the file for reading
				fs.open(f, FileMode.READ);

				//read the file as a string
				var data:String = fs.readUTFBytes(fs.bytesAvailable);

				//close the file
				fs.close();

				//display the contents of the file
				outputField.text = data;
			}
		}


	}
}