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The JavaHelp API provides a platform-independent help framework.
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/*
 * @(#)FavoritesAction.java	1.3 06/10/30
 * 
 * Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 * 
 * This code 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.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 * 
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package javax.help;

import java.awt.event.ActionListener;
import java.util.Enumeration;
import java.util.Locale;
import javax.swing.UIManager;

/**
 *
 * @author Roger Brinkley
 * @version   1.3     10/30/06
 */
public class FavoritesAction extends AbstractHelpAction implements ActionListener {
    
    private static final String NAME = "FavoritesAction";
    private JHelpFavoritesNavigator favorites=null;
    private ActionListener favoritesActionListener=null;

    /** Creates new FavoritesAction */
    public FavoritesAction(Object control) {
        super(control, NAME);
        if (control instanceof JHelp) {
            JHelp help = (JHelp)control;
	    for (Enumeration e = help.getHelpNavigators(); e.hasMoreElements();) {
		JHelpNavigator nav = (JHelpNavigator)e.nextElement();
		if(nav instanceof JHelpFavoritesNavigator) {
		    favorites = (JHelpFavoritesNavigator)nav;
		    favoritesActionListener = favorites.getAddAction();
		}
	    }
            
            setEnabled(favoritesActionListener != null);
            
            putValue("icon", UIManager.getIcon(NAME + ".icon"));
            
	    Locale locale = null;
	    try {
		locale = help.getModel().getHelpSet().getLocale();
	    } catch (NullPointerException npe) {
		locale = Locale.getDefault();
	    }
            putValue("tooltip", HelpUtilities.getString(locale, "tooltip." + NAME));
            putValue("access", HelpUtilities.getString(locale, "access." + NAME));
        }
    }

    public void actionPerformed(java.awt.event.ActionEvent event) {
	if (favoritesActionListener != null) {
	    favoritesActionListener.actionPerformed(event);
	}
    }

}