/**************************************************************************
* Copyright (c) 2001, 2002, 2003 by Punch Telematix. All rights reserved. *
*                                                                         *
* Redistribution and use in source and binary forms, with or without      *
* modification, are permitted provided that the following conditions      *
* are met:                                                                *
* 1. Redistributions of source code must retain the above copyright       *
*    notice, this list of conditions and the following disclaimer.        *
* 2. Redistributions in binary form must reproduce the above copyright    *
*    notice, this list of conditions and the following disclaimer in the  *
*    documentation and/or other materials provided with the distribution. *
* 3. Neither the name of Punch Telematix nor the names of                 *
*    other contributors may be used to endorse or promote products        *
*    derived from this software without specific prior written permission.*
*                                                                         *
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED          *
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF    *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.    *
* IN NO EVENT SHALL PUNCH TELEMATIX OR OTHER CONTRIBUTORS BE LIABLE       *
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR            *
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR         *
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,   *
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE    *
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN  *
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                           *
**************************************************************************/

package java.awt;

import java.awt.peer.*;
import java.awt.event.*;
import java.io.*;
  
public class CheckboxMenuItem extends MenuItem implements ItemSelectable {

  boolean state;
  int checkboxMenuItemSerializedDataVersion;
  
  transient ItemListener itemListener;

  public CheckboxMenuItem() {
    this(null);
  }

  
  public CheckboxMenuItem(String label) {
    this(label, false);
  }

  public CheckboxMenuItem(String label, boolean state) {
    super(label);
    this.state = state;
  }

  public boolean getState() {
    return state;
  }
  
  public synchronized void setState(boolean state) {
    this.state = state;
    ((CheckboxMenuItemPeer)peer).setState(state);
  }
  
  public Object[] getSelectedObjects() {
    if(state) {
      return new Object[]{ getLabel() };
    }
    else {
      return null;
    }
  }
  
  public synchronized void addItemListener(java.awt.event.ItemListener listener) {
    itemListener = AWTEventMulticaster.add(itemListener, listener);
  }

  protected void processEvent(AWTEvent event) {
    if (event instanceof ItemEvent) {
      processItemEvent((ItemEvent)event);
    }
    else {
      super.processEvent(event);
    }
  }
  
  protected void processItemEvent(java.awt.event.ItemEvent event) {
    if (itemListener != null) {
      setState(event.getStateChange() == ItemEvent.SELECTED);
      itemListener.itemStateChanged(event);
    }
  }
  
  public synchronized void removeItemListener(java.awt.event.ItemListener listener) {
    itemListener = AWTEventMulticaster.remove(itemListener, listener);
  }
  
  public void addNotify() {
    if(peer == null) {
      peer = Toolkit.getDefaultToolkit().createCheckboxMenuItem(this);
    }
  }

  public String paramString() {
    return "java.awt.CheckboxMenuItem";
  }
  
  private void readObject(ObjectInputStream s) throws ClassNotFoundException, IOException {
  }
  
  private void writeObject(ObjectOutputStream s) throws ClassNotFoundException, IOException {
  }

}