public class MyRootEditPart extends AbstractGraphicalEditPart 
{		

.... code here ....

	protected void createEditPolicies() 
	{
		// If this editpart is the root content of the viewer, then disallow
		// removal
		if (getParent() instanceof RootEditPart) {
			installEditPolicy(EditPolicy.COMPONENT_ROLE, new RootComponentEditPolicy());
			
		}
		
		// Handle Resize and Move the Children		
		installEditPolicy(EditPolicy.LAYOUT_ROLE, new MoveEditLayoutPolicy());
			
	}

.... code here ....
}

public class MyEditPart extends AbstractGraphicalEditPart implements PropertyChangeListener
{
.... code here ....

    @Override
    protected void createEditPolicies()
    {                 
       
       	// Policy to Highlight the Figure when the mouse is hovering or then the EditPart
	// has been selected.
	installEditPolicy(EditPolicy.SELECTION_FEEDBACK_ROLE, new HighLightEditPolicy((BlockNodeFigure)this.getFigure()));	        
       
    }

.... code here ....

}

public class MyBlockFigure extends RoundedRectangle 
{

.... code here ....

	public MyBlockFigure(MyEditPart editpart) 
	{
                .... code here ....

		// Instantiate the Drag&Move Listener
		new DragAndMoveFigureMouseListener(this);						
	}

.... code here ....

}

public class MoveEditLayoutPolicy extends XYLayoutEditPolicy
{

	@Override
	protected Command createChangeConstraintCommand(EditPart child, Object constraint)
	{
		AbstractLayoutCommand command = null;
		if(child instanceof BlockModelEditPart)
		{
			command = new BlockModelLayoutCommand();
			command.setModel((BlockModel)child.getModel());
			command.setConstraint((Rectangle)constraint);		
		}
		
		return command;
	}

	
	
	@Override
	protected Command getCreateCommand(CreateRequest request) 
	{	
		return null;
	}

}

public class HighLightEditPolicy extends SelectionEditPolicy 
{
	
	/** BlockModel Figure to be handled for this policy to be 
	 * highlighted or selected */ 
	MyBlockFigure figBlock = null;
	
	
	public HighLightEditPolicy(MyBlockFigure figure) 
	{
		super();
		this.figBlock = figure;
	}
	
	
	@Override
	protected void showSelection() 
	{
		figBlock.select();
	}

	
	@Override
	protected void hideSelection() 
	{	
		figBlock.deSelect();
	}
	
	
	@Override
	public void showTargetFeedback(Request request) 
	{
		figBlock.activateHighLight();
	}

	
	@Override
	public void eraseTargetFeedback(Request request)
	{		
		figBlock.deactiveHighLight();		
	}
		
}

/** This Listener implements drag and drop for Draw2D Figure */
public class DragAndMoveFigureMouseListener implements MouseListener, MouseMotionListener{
	   

	/** */
	private Figure figure;
	
	/** */
	private Point location;

	/** Instance the Logger */
	private final static Logger LOGGER = Logger.getLogger(DragAndMoveFigureMouseListener.class.getName()); 
	

	/**
	 * constructor save reference to figure, then add listeners
	 * @param figure
	 */
	public DragAndMoveFigureMouseListener(Figure figure) 
	{
		this.figure = figure;
		figure.addMouseListener(this);	    
		figure.addMouseMotionListener(this);	    
	}


	@Override
	public void mousePressed(MouseEvent me) 
	{
		location = me.getLocation();
		me.consume();
	}


	@Override
	public void mouseReleased(MouseEvent me) 
	{
		if( location==null )
			return;

		location = null;

		me.consume();
	}
	
	public void mouseDragged(MouseEvent event) 
	{
		if (location == null)
			return;
		Point newLocation = event.getLocation();
		if (newLocation == null)
			return;
		Dimension offset = newLocation.getDifference(location);
		if (offset.width == 0 && offset.height == 0)
			return;
		location = newLocation;

		UpdateManager updateMgr = figure.getUpdateManager();
		LayoutManager layoutMgr = figure.getParent().getLayoutManager();
		Rectangle bounds = figure.getBounds();
		updateMgr.addDirtyRegion(figure.getParent(), bounds);
		bounds = bounds.getCopy().translate(offset.width, offset.height);
		layoutMgr.setConstraint(figure, bounds);
		figure.translate(offset.width, offset.height);
		updateMgr.addDirtyRegion(figure.getParent(), bounds);
		event.consume();
				
	}


	@Override
	public void mouseEntered(MouseEvent me) { }		  


	@Override
	public void mouseExited(MouseEvent me) { }


	@Override
	public void mouseHover(MouseEvent me) { }


	@Override
	public void mouseMoved(MouseEvent me) { }


	@Override
	public void mouseDoubleClicked(MouseEvent me) { }
}