/*

  * $Id: DefaultLocaleResolver.java 887725 2009-12-06 18:02:10Z 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.locale.impl;

 import java.util.Locale;

 import java.util.Map;

 import org.apache.tiles.locale.LocaleResolver;

 import org.apache.tiles.request.Request;

 /**

  * Default implementation of <code>LocaleResolver</code><br>

  * It tries to take the locale from the session-scoped attribute

  * {@link DefaultLocaleResolver#LOCALE_KEY}. If it is not found, it returns the

  * locale included in the request.

  *

  * @version $Rev: 887725 $ $Date: 2009-12-07 05:02:10 +1100 (Mon, 07 Dec 2009) $

  */

 public class DefaultLocaleResolver implements LocaleResolver {

     /**

      * The attribute name that is used to store the current locale.

      */

     public static final String LOCALE_KEY = "org.apache.tiles.LOCALE";

     /** {@inheritDoc} */

     public Locale resolveLocale(Request request) {

         Locale retValue = null;

         Map<String, Object> session = request.getContext("session");

         if (session != null) {

             retValue = (Locale) session.get(DefaultLocaleResolver.LOCALE_KEY);

         }

         if (retValue == null) {

             retValue = request.getRequestLocale();

         }

         return retValue;

     }

 }