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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * only the GPL Version 2, indicate your decision by adding "[Contributor]
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 * Version 2] license."  If you don't indicate a single choice of license, a
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 */

package com.sun.enterprise.tools.upgrade.gui.util;

/**
 *
 * @author  prakash
 */
import com.sun.enterprise.tools.upgrade.common.Branding;
import com.sun.enterprise.tools.upgrade.logging.LogService;
import java.net.URL;
import java.util.logging.Logger;
import javax.help.HelpBroker;
import javax.help.HelpSet;

public class Utils {
    
    private static HelpBroker helpBroker ;    
    private static final Logger log = LogService.getLogger();

    // don't need to instantiate
    private Utils() {}

    public static HelpBroker getHelpBroker() {
        if (helpBroker == null) {
            String helpHSString = Branding.getHSString(
                "com/sun/enterprise/tools/upgrade/doc/UpgradeToolHelp.hs");
            HelpSet helpHS = null;
            ClassLoader cl = Utils.class.getClassLoader();
            try {
                URL hsURL = HelpSet.findHelpSet(cl, helpHSString);
                helpHS = new HelpSet(null, hsURL);
            } catch (Exception ee) {
                // log messages....
                log.warning("HelpSet " + ee.getMessage());
                log.warning("HelpSet " + helpHS + " not found");
                return null;
            }
            // Create a HelpBroker object:
            helpBroker = helpHS.createHelpBroker();
        }
        return helpBroker;
    }
}