/*

  * Copyright 2004-2011 the Seasar Foundation and the Others.

  *

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  *     http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,

  * either express or implied. See the License for the specific language

  * governing permissions and limitations under the License.

  */

 package org.seasar.teeda.core.webapp;

 import javax.faces.FactoryFinder;

 import javax.servlet.ServletContext;

 import javax.servlet.ServletContextEvent;

 import org.seasar.framework.container.servlet.S2ContainerListener;

 import org.seasar.framework.log.Logger;

 import org.seasar.teeda.core.ProductInfo;

 /**

  * @author shot

  * @author manhole

  */

 public class TeedaConfigureListener extends S2ContainerListener {

     private static final String FACES_INIT_DONE = TeedaConfigureListener.class

             .getName() +

             ".FACES_INIT_DONE";

     private static Logger logger = Logger

             .getLogger(TeedaConfigureListener.class);

     public void contextInitialized(ServletContextEvent event) {

         super.contextInitialized(event);

         printVersion();

         logger.debug("JSF initialize start");

         try {

             initializeFaces(event.getServletContext());

         } catch (RuntimeException e) {

             logger.log(e);

             throw e;

         } catch (Error e) {

             logger.log(e);

             throw e;

         }

         logger.debug("JSF initialize end");

     }

     public void contextDestroyed(ServletContextEvent event) {

         super.contextDestroyed(event);

         FactoryFinder.releaseFactories();

     }

     protected void initializeFaces(ServletContext servletContext) {

         Boolean b = (Boolean) servletContext.getAttribute(FACES_INIT_DONE);

         boolean isAlreadyInitialized = (b != null) ? b.booleanValue() : false;

         if (!isAlreadyInitialized) {

             TeedaInitializer initializer = new TeedaInitializer();

             initializer.setServletContext(servletContext);

             initializer.initializeFaces();

             servletContext.setAttribute(FACES_INIT_DONE, Boolean.TRUE);

         }

     }

     private void printVersion() {

         logger.debug("Teeda version :" + ProductInfo.getVersion());

     }

 }