/*

  * 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.taglib.core;

 import java.util.Locale;

 import java.util.MissingResourceException;

 import java.util.ResourceBundle;

 import javax.faces.component.UIViewRoot;

 import javax.faces.context.FacesContext;

 import javax.faces.el.ValueBinding;

 import javax.faces.internal.ValueBindingUtil;

 import javax.faces.webapp.UIComponentTag;

 import javax.servlet.jsp.JspException;

 import javax.servlet.jsp.tagext.Tag;

 import javax.servlet.jsp.tagext.TagSupport;

 import org.seasar.framework.log.Logger;

 import org.seasar.framework.util.AssertionUtil;

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

 /**

  * @author shot

  * @author yone

  */

 public class LoadBundleTag extends TagSupport {

     private static Logger logger = Logger.getLogger(LoadBundleTag.class);

     private static final long serialVersionUID = 1L;

     private String basename;

     private String var;

     public void setBasename(String basename) {

         this.basename = basename;

     }

     public void setVar(String var) {

         this.var = var;

     }

     public String getBasename() {

         return basename;

     }

     public String getVar() {

         return var;

     }

     public int doStartTag() throws JspException {

         FacesContext context = FacesContext.getCurrentInstance();

         AssertionUtil.assertNotNull("FacesContext", context);

         UIViewRoot viewRoot = context.getViewRoot();

         AssertionUtil.assertNotNull("ViewRoot", viewRoot);

         Locale locale = viewRoot.getLocale();

         if (locale == null) {

             locale = context.getApplication().getDefaultLocale();

         }

         String bname = null;

         final String basename = getBasename();

         if (basename != null) {

             if (UIComponentTag.isValueReference(basename)) {

                 ValueBinding vb = ValueBindingUtil.createValueBinding(context,

                         basename);

                 bname = (String) vb.getValue(context);

             } else {

                 bname = basename;

             }

         }

         final ResourceBundle bundle;

         try {

             bundle = ResourceBundle.getBundle(bname, locale, Thread

                     .currentThread().getContextClassLoader());

         } catch (MissingResourceException e) {

             logger.error("Resource bundle '" + bname + "' could not be found");

             return Tag.SKIP_BODY;

         }

         context.getExternalContext().getRequestMap().put(var,

                 new ResourceBundleMap(bundle));

         return Tag.SKIP_BODY;

     }

     public void release() {

         basename = null;

         var = null;

     }

 }