// Copyright (c) 1995, 1996 Regents of the University of California.
// All rights reserved.
//
// This software was developed by the Arcadia project
// at the University of California, Irvine.
//
// Redistribution and use in source and binary forms are permitted
// provided that the above copyright notice and this paragraph are
// duplicated in all such forms and that any documentation,
// advertising materials, and other materials related to such
// distribution and use acknowledge that the software was developed
// by the University of California, Irvine.  The name of the
// University may not be used to endorse or promote products derived
// from this software without specific prior written permission.
// THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
// WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

// File: ActionReorder.java
// Classes: ActionReorder
// Original Author: Jason Robbins

package uci.graphedit;

/**
 * Action to change the back-to-front ordering of DiagramElement's.
 * @see LayerDiagram#reorder
 */

public class ActionReorder extends Action 
{
  /** parameters for specifying the desired reordering */
  public static final int SEND_TO_BACK = 1;
  public static final int BRING_TO_FRONT = 2;
  public static final int SEND_BACKWARD = 3;
  public static final int BRING_FORWARD = 4;

  private int function;

  /** Construct a new ActionReorder with the given reordering
    constrant (see above) */
  public ActionReorder(int f,Document d) 
  { 
	  super(d);
	  function = f;
  }

  public String name() { return "Reorder Objects"; }

  public void doIt() 
  {
    Layer v = _document.view();
    Selection sel = _document.selection();
    sel.startTrans();
    sel.reorder(function, v);
    sel.endTrans();
    _document.repairDamage();
  }

  public void undoIt() { }

} /* end class ActionReorder */