valuechangeevent.java

来自「RESIN 3.2 最新源码」· Java 代码 · 共 70 行

/*
 * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package javax.faces.event;

import java.util.*;

import javax.faces.component.*;

public class ValueChangeEvent extends FacesEvent
{
  private Object oldValue;
  private Object newValue;

  public ValueChangeEvent(UIComponent component,
			  Object oldValue,
			  Object newValue)
  {
    super(component);

    this.oldValue = oldValue;
    this.newValue = newValue;
  }

  public Object getNewValue()
  {
    return this.newValue;
  }

  public Object getOldValue()
  {
    return this.oldValue;
  }

  public boolean isAppropriateListener(FacesListener listener)
  {
    return listener instanceof ValueChangeListener;
  }

  public void processListener(FacesListener listener)
  {
    ((ValueChangeListener) listener).processValueChange(this);
  }
}