/*
 * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution 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.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN
 * OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
 * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
 * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
 * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE,
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that Software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of
 * any nuclear facility.
 */
package com.sun.j2ee.blueprints.admin.client;

import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.Icon;

/**
 * Adds support for item events like Toggle buttons and Checkbox menu items.
 * The developer should subclass this abstract class and define the
 * <code>actionPerformed</code> and <code>itemStateChanged</code> methods.
 *
 * @version 1.2 10/10/01
 * @author  Mark Davidson
 */
public abstract class AbstractItemAction extends AbstractAction
    implements ItemListener {
    
    protected boolean selected = false;
    
    public AbstractItemAction(String name) {
    super(name);
    }

    /** 
     * Returns true if the action is selcted.
     */
    public boolean isSelected()  {
        return selected;
    }
    
    /** 
     * Changes the state of the action
     * @param newValue true to set the selection state of the action.
     */
    public synchronized void setSelected(boolean newValue) {
        boolean oldValue = this.selected;
    if (oldValue != newValue) {
        this.selected = newValue;
        firePropertyChange("selected", new Boolean(oldValue), 
                   new Boolean(newValue));
    }
    }
}