// File: ModeCreateNPlaceVertex.java
// Classes: ModeCreateNPlaceVertex
// Original Author: Kedar Patankar
// Date 31 Jan 1997

package uci.graphedit;

import java.awt.Graphics;
import java.awt.Event;
import java.awt.Frame;
import java.awt.Point;

/** Mode to place new a Perspective on a NetNode in a diagram.
 * Normally invoked via ActionCreateNode.
 * @see ActionCreateNode
 * @see Perspective
 */

public class ModeCreateVertex extends Mode {
  
  /** the (new) node being placed. It might be an existing node that
   * is adding a new perspective.
   */
  private Editor _editor;
  
  /** the (new) perspective being placed. It might be an existing
   * perspective on an existing node being place in another diagram.
   */
  private String _className;
  
  /** Construct a new instance of ModePlace and store the given
   * NetNode and Perspective 
   */
  ModeCreateVertex(Document d,Editor e,String classname) 
  {
	  super(d);
	  _editor=e;
	  _className=classname;
  }
  public void setCursorType(Editor ed)
  {
	  ed.setCursor(Frame.HAND_CURSOR);
  }

  /** Move the perpective along with the mouse */
  public boolean mouseMove(Event evt,int x,int y) {
    return true;
  }
  
  /** Eat this event and do nothing */
  public boolean mouseDown(Event evt,int x,int y) {
    return true;
  }
  
  /* Eactly the same as mouse move */
  public boolean mouseDrag(Event evt,int x,int y) {
    return mouseMove(evt,x,y);
  }
  
  /** Actually add the Perpective to the diagram.
   * And give the NetNode a chance to do post processing.
   * @see NetNode#postPlacement
   */
  public boolean mouseUp(Event evt,int x,int y) 
  {
	  Point p=new Point(x,y);
	  Action addClass = new ActionCreateVertex(_className,_editor,p);
	  addClass.doIt();
	  done();
	  return true;
  }
  
  /** draw the perspective being dragged around */
  public void draw(Graphics g) { }
  
} /* end class ModeCreateVertex */