/*
    * $Id: SelectLocaleServlet.java 892369 2009-12-18 20:21:36Z apetrelli $
    *
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.apache.tiles.test.servlet;
  
  import java.util.Locale;
  
  import javax.servlet.ServletConfig;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.servlet.http.HttpSession;
  
  import org.apache.tiles.TilesContainer;
  import org.apache.tiles.access.TilesAccess;
  import org.apache.tiles.locale.impl.DefaultLocaleResolver;
  import org.apache.tiles.request.ApplicationContext;
  import org.apache.tiles.request.Request;
  import org.apache.tiles.request.servlet.ServletRequest;
  
  /**
   * Servlet able to let a user choose a locale.
   *
   * @version $Rev: 892369 $ $Date: 2009-12-19 07:21:36 +1100 (Sat, 19 Dec 2009) $
   */
  public class SelectLocaleServlet extends HttpServlet {
  
      /**
       * The key of the container to use.
       */
      private String containerKey;
  
      /**
       * The name of the definition to render.
       */
      private String definitionName;
  
      /** {@inheritDoc} */
      @Override
      public void init(ServletConfig config) throws ServletException {
          super.init(config);
          containerKey = config
                  .getInitParameter("org.apache.tiles.test.servlet.ServletConfig.CONTAINER_KEY");
          definitionName = config
                  .getInitParameter("org.apache.tiles.test.servlet.ServletConfig.DEFINITION_NAME");
      }
  
      /** {@inheritDoc} */
      @Override
      protected void doGet(HttpServletRequest request,
              HttpServletResponse response) {
          process(request, response);
      }
  
      /** {@inheritDoc} */
      @Override
      protected void doPost(HttpServletRequest request,
              HttpServletResponse response) {
          process(request, response);
      }
  
      /**
       * Processes the request.
       *
       * @param request The request object.
       * @param response The response object.
       */
      private void process(HttpServletRequest request,
              HttpServletResponse response) {
          String localeParameter = request.getParameter("locale");
          HttpSession session = request.getSession();
          Locale locale = null;
          if (localeParameter != null && localeParameter.trim().length() > 0) {
              String[] localeStrings = localeParameter.split("_");
              if (localeStrings.length == 1) {
                  locale = new Locale(localeStrings[0]);
              } else if (localeStrings.length == 2) {
                  locale = new Locale(localeStrings[0], localeStrings[1]);
              } else if (localeStrings.length > 2) {
                  locale = new Locale(localeStrings[0], localeStrings[1], localeStrings[2]);
              }
         }
         session.setAttribute(DefaultLocaleResolver.LOCALE_KEY, locale);
         ApplicationContext applicationContext = org.apache.tiles.request.servlet.ServletUtil
                 .getApplicationContext(getServletContext());
         Request currentRequest = new ServletRequest(applicationContext, request, response);
         TilesAccess.setCurrentContainer(currentRequest, containerKey);
         TilesContainer container = TilesAccess.getCurrentContainer(currentRequest);
         container.render(definitionName, currentRequest);
     }
 }