TemplateManager.java

00001 /*
00002  * OpenMobileIS - a free Java(TM) Framework for mobile applications Java(TM)
00003  * Copyright (C) 2004-2006 Philippe Delrieu
00004  * All rights reserved.
00005  * Contact: pdelrieu@openmobileis.org
00006  *
00007  * This library is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or any later version.
00011  *
00012  * This library is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with this library; if not, write to the Free Software
00019  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
00020  * USA
00021  *
00022  *  Author : Philippe Delrieu
00023  *
00024  *  Modifications :
00025  *  2004 Creation P.Delrieu
00026  *  2004 Modified by Romain Beaugrand
00027  *
00028  */
00029 
00030 package org.openmobileis.embedded.webserver.templates;
00031 
00032 import javax.servlet.http.HttpServletResponse;
00033 
00034 import freemarker.template.TemplateModelRoot;
00035 
00051 public class TemplateManager  {
00052 
00053   private static TemplateManager manager = null;
00054   private static TemplateManagerDelegate delegate;
00055 
00056   private TemplateManager() {
00057 //              LogManager.traceDebug(0, "TemplateManager constructor");
00058                 if (delegate == null) delegate = new Freemarkerv1TemplateDelegate(); //init default delegate.
00059     this.init();
00060 
00061   }
00062 
00063   public static TemplateManager getManager() {
00064     if (manager == null)  {
00065       synchronized(TemplateManager.class)  {
00066         if (manager == null)  {
00067           manager = new  TemplateManager();
00068         }
00069       }
00070     }
00071     return manager;
00072   }
00073 
00074   public static void registerTemplateDelegate(TemplateManagerDelegate indelegate)       {
00075         delegate = indelegate;
00076   }
00077 
00078   public TemplateManagerDelegate getRegisteredTemplateDelegate()        {
00079         return delegate;
00080   }
00081 
00086   protected void init() {
00087         delegate.init();
00088   }
00089 
00090   public void updateTemplateWithNavigationBarData(Object modelRoot, String data)        {
00091         delegate.updateTemplateWithNavigationBarData(modelRoot, data);
00092   }
00093 
00097   public TemplateModelRoot getTemplateModelRoot()  {
00098         return delegate.getTemplateModelRoot();
00099   }
00100 
00101   /*
00102   * Get the template called templateName (load it if it is not already done),
00103   * replace all variables tree of TemplateModelRoot in the template.
00104   * Write the HTTP response in the output stream with a basic header (mime type + status)
00105   * @param: String templateName the name of the template to use
00106   * @param: Hashtable variables (varName -> variable value) pairs
00107   * @param: HttpServletResponse response
00108   * @return: none
00109   * @OpenMSPException : IOEXception if an error occurs during sending data
00110   * @OpenMSPException : TemplateNotFoundException if the template is not found
00111   */
00112   public void sendResponse (String templateName, TemplateModelRoot modelRoot, HttpServletResponse res) throws java.io.IOException, TemplateNotFoundException {
00113         delegate.sendResponse(templateName, modelRoot, res);
00114   }
00115 
00116 
00117 }
00118 
00119 
00120 

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