// BEGIN LICENSE BLOCK
// Version: CMPL 1.1
//
// The contents of this file are subject to the Cisco-style Mozilla Public
// License Version 1.1 (the "License"); you may not use this file except
// in compliance with the License.  You may obtain a copy of the License
// at www.eclipse-clp.org/license.
// 
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See
// the License for the specific language governing rights and limitations
// under the License. 
// 
// The Original Code is  The ECLiPSe Constraint Logic Programming System. 
// The Initial Developer of the Original Code is  Cisco Systems, Inc. 
// Portions created by the Initial Developer are
// Copyright (C) 2006 Cisco Systems, Inc.  All Rights Reserved.
// 
// Contributor(s): 
// 
// END LICENSE BLOCK

package com.parctechnologies.eclipse.visualisation;

import com.parctechnologies.eclipse.*;
import java.util.*;


public class BackUpdateEvent extends UpdateEvent
{
  static VisEvent parseFromCompoundTerm(CompoundTerm term)
  {
      String viewableName = ((Atom)term.arg(1)).functor();
      String interestSpecName = ((Atom) term.arg(2)).functor();
      List elementsUpdating = getIndiciesUpdating((List) term.arg(4));

      return(new BackUpdateEvent(viewableName, interestSpecName,
                                 elementsUpdating));
  }

  private BackUpdateEvent(String viewableName, String interestSpecName,
                          List elementsUpdating)
  {
    setViewableName(viewableName);
    setInterestSpecName(interestSpecName);
    setElementsUpdating(elementsUpdating);
  }

  public String getDescription()
  {
    return("Backward update in viewable "+getViewableName()+".");
  }

}