/*

  * 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 javax.faces.internal;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Locale;

 import org.seasar.framework.container.hotdeploy.HotdeployUtil;

 import org.seasar.framework.message.MessageResourceBundle;

 import org.seasar.framework.message.MessageResourceBundleFactory;

 import org.seasar.teeda.core.util.DIContainerUtil;

 /**

  * @author shot

  */

 public class MessageResourceBundleChainFactory {

     private static MessageResourceBundle[] userBundles = null;

     private MessageResourceBundleChainFactory() {

     }

     public static MessageResourceBundle createChain(String bundleName,

             Locale locale) {

         if (!DIContainerUtil.hasContainer()

                 || !DIContainerUtil.hasComponent(MessageResourceBundle.class)) {

             return createSimpleMessageResourceBundle(bundleName, locale);

         }

         MessageResourceBundleChain chain = new MessageResourceBundleChain();

         if (userBundles == null) {

             List list = new ArrayList();

             Object[] components = DIContainerUtil

                     .findAllComponents(MessageResourceBundle.class);

             for (int i = 0; i < components.length; i++) {

                 MessageResourceBundle bundle = (MessageResourceBundle) components[i];

                 chain.addMessageResourceBundle(bundle);

                 list.add(bundle);

             }

             userBundles = (MessageResourceBundle[]) list

                     .toArray(new MessageResourceBundle[components.length]);

         } else {

             for (int i = 0; i < userBundles.length; i++) {

                 chain.addMessageResourceBundle(userBundles[i]);

             }

         }

         MessageResourceBundle defaultBundle = createSimpleMessageResourceBundle(

                 bundleName, locale);

         if (defaultBundle != null) {

             chain.addMessageResourceBundle(defaultBundle);

         }

         return chain;

     }

     public static void clearUserBundles() {

         userBundles = null;

     }

     private static MessageResourceBundle createSimpleMessageResourceBundle(

             String bundleName, Locale locale) {

         if (HotdeployUtil.isHotdeploy()) {

             return MessageResourceBundleFactory.getNullableBundle(bundleName,

                     locale);

         } else {

             return new JavaMessageResourceBundle(bundleName, locale);

         }

     }

 }