package implementation.source.java.nodes;

import edu.umd.cs.piccolo.event.PInputEvent;
import edu.umd.cs.piccolo.util.PDimension;
import edu.umd.cs.piccolox.handles.PHandle;
/*
 * Created on Jan 24, 2006
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */

/**
 * @author Timothy Ober
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class DFEdgeHandle extends PHandle {

   DFEdge edge;
   /**
    * @param arg0
    */
   public DFEdgeHandle(SetXYLocator loc, DFEdge e) {
      super(loc);
      edge = e;
      
      loc.setY(edge.getY() + edge.getHeight() / 2);
      loc.setX(edge.getX() + edge.getWidth() / 2);
   }
   
   public void dragHandle(PDimension aLocalDimension, PInputEvent aEvent) {
      if (edge.getGraphFrame().getDeleteControlPoints()) {
         edge.deleteControlPoint(this);
         return;
      }
      
      localToParent(aLocalDimension);
      SetXYLocator loc = (SetXYLocator)getLocator();
      loc.setX(loc.locateX() + aLocalDimension.getWidth());
      loc.setY(loc.locateY() + aLocalDimension.getHeight());
      relocateHandle();
      edge.reset();
      edge.drawEdge();
   }
   
   public DFEdge getEdge() {
      return edge;
   }
}