2009/05/20 - Apache Shale has been retired.

   /*
    * 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.shale.test.el;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import java.util.ResourceBundle;
  import java.util.Map.Entry;
  
  import javax.el.ELContext;
  import javax.el.PropertyNotFoundException;
  import javax.el.PropertyNotWritableException;
  import javax.faces.context.FacesContext;
  
  import org.apache.shale.test.mock.MockApplication12;
  
  /***
   * <p><code>ELResolver</code> implementation that accesses resource bundles
   * in the current application.  See the JSF 1.2 Specification, section
   * 5.6.1.3, for requirements implemented by this class.</p>
   *
   * @since 1.0.4
   */
  public class FacesResourceBundleELResolver extends AbstractELResolver {
      
  
      /***
       * <p>Return the most general type this resolver accepts for the
       * <code>property</code> argument.</p>
       */
      public Class getCommonPropertyType(ELContext context, Object base) {
  
          if (base != null) {
              return null;
          } else {
              return String.class;
          }
  
      }
  
  
      /***
       * <p>Return an <code>Iterator</code> over the attributes that this
       * resolver knows how to deal with.</p>
       *
       * @param context <code>ELContext</code> for evaluating this value
       * @param base Base object against which this evaluation occurs
       */
      public Iterator getFeatureDescriptors(ELContext context, Object base) {
  
          if (base != null) {
              return null;
          }
  
          // Create the variables we will need
          List descriptors = new ArrayList();
          FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
          MockApplication12 application =
                  (MockApplication12) fcontext.getApplication();
          String key = null;
          Object value = null;
  
          // Create a feature descriptor for each configured resource bundle
          Iterator entries = application.getResourceBundles().entrySet().iterator();
          while (entries.hasNext()) {
              Entry entry = (Entry) entries.next();
              key = (String) entry.getKey();
              value = entry.getValue();
              descriptors.add(descriptor(key, key, "Resource Bundle " + key,
                                         false, false, true,
                                         ResourceBundle.class, true));
          }
  
          // Return the accumulated descriptors
          return descriptors.iterator();
  
      }
  
  
      /***
       * <p>Return the Java type of the specified property.</p>
       *
       * @param context <code>ELContext</code> for evaluating this value
      * @param base Base object against which this evaluation occurs
      *  (must be null because we are evaluating a top level variable)
      * @param property Property name to be accessed
      */
     public Class getType(ELContext context, Object base, Object property) {
 
         if (base != null) {
             return null;
         }
         if (property == null) {
             throw new PropertyNotFoundException("No property specified");
         }
         FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
         ResourceBundle bundle =
           fcontext.getApplication().getResourceBundle(fcontext, property.toString());
         if (bundle != null) {
             context.setPropertyResolved(true);
             return ResourceBundle.class;
         }
         return null;
 
     }
 
 
     /***
      * <p>Return a resource bundle for the specified name (if any);
      * otherwise, return <code>null</code>.</p>
      *
      * @param context <code>ELContext</code> for evaluating this value
      * @param base Base object against which this evaluation occurs
      *  (must be null because we are evaluating a top level variable)
      * @param property Property name to be accessed
      */
     public Object getValue(ELContext context, Object base, Object property) {
 
         if (base != null) {
             return null;
         }
         if (property == null) {
             throw new PropertyNotFoundException("No property specified");
         }
 
         FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
         ResourceBundle bundle =
           fcontext.getApplication().getResourceBundle(fcontext, property.toString());
         if (bundle != null) {
             context.setPropertyResolved(true);
             return bundle;
         }
         return null;
 
     }
 
 
     /***
      * <p>Return <code>true</code> if the specified property is read only.</p>
      *
      * @param context <code>ELContext</code> for evaluating this value
      * @param base Base object against which this evaluation occurs
      *  (must be null because we are evaluating a top level variable)
      * @param property Property name to be accessed
      */
     public boolean isReadOnly(ELContext context, Object base, Object property) {
 
         if (base != null) {
             return false;
         }
         if (property == null) {
             throw new PropertyNotFoundException("No property specified");
         }
         FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
         ResourceBundle bundle =
           fcontext.getApplication().getResourceBundle(fcontext, property.toString());
         if (bundle != null) {
             context.setPropertyResolved(true);
             return true;
         }
         return false;
 
     }
 
 
 
     /***
      * <p>Set the value of a scoped object for the specified name.</p>
      *
      * @param context <code>ELContext</code> for evaluating this value
      * @param base Base object against which this evaluation occurs
      *  (must be null because we are evaluating a top level variable)
      * @param property Property name to be accessed
      * @param value New value to be set
      */
     public void setValue(ELContext context, Object base, Object property, Object value) {
 
         if (base != null) {
             return;
         }
         if (property == null) {
             throw new PropertyNotFoundException("No property specified");
         }
 
         FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
         ResourceBundle bundle =
           fcontext.getApplication().getResourceBundle(fcontext, property.toString());
         if (bundle != null) {
             context.setPropertyResolved(true);
             throw new PropertyNotWritableException(property.toString());
         }
 
     }
 
 
 }