package org.argeo.eclipse.ui.specific;
   
   import java.io.IOException;
   import java.io.InputStream;
   import java.util.Arrays;
   
   import org.eclipse.swt.dnd.DND;
   import org.eclipse.swt.dnd.DropTarget;
   import org.eclipse.swt.dnd.DropTargetAdapter;
  import org.eclipse.swt.dnd.DropTargetEvent;
  import org.eclipse.swt.dnd.FileTransfer;
  import org.eclipse.swt.dnd.Transfer;
  import org.eclipse.swt.widgets.Control;
  
  public class FileDropAdapter {
  
  	public void prepareDropTarget(Control control, DropTarget dropTarget) {
  		dropTarget.setTransfer(new Transfer[] { FileTransfer.getInstance() });
  		dropTarget.addDropListener(new DropTargetAdapter() {
  			@Override
  			public void dropAccept(DropTargetEvent event) {
  				if (!FileTransfer.getInstance().isSupportedType(event.currentDataType)) {
  					event.detail = DND.DROP_NONE;
  				}
  			}
  
  			@Override
  			public void drop(DropTargetEvent event) {
  				handleFileDrop(control, event);
  			}
  		});
  	}
  
  	public void handleFileDrop(Control control, DropTargetEvent event) {
  		String fileList[] = null;
  		FileTransfer ft = FileTransfer.getInstance();
  		if (ft.isSupportedType(event.currentDataType)) {
  			fileList = (String[]) event.data;
  		}
  		System.out.println(Arrays.toString(fileList));
  	}
  
  	/** Executed in UI thread */
  	protected void processUpload(InputStream in, String fileName, String contentType) throws IOException {
  
  	}
  
  }