/*

  * 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.myfaces.view.facelets.compiler;

 import java.io.IOException;

 import java.util.List;

 import javax.el.ELException;

 import javax.faces.FacesException;

 import javax.faces.component.UIComponent;

 import javax.faces.view.facelets.FaceletContext;

 import javax.faces.view.facelets.FaceletException;

 import javax.faces.view.facelets.FaceletHandler;

 public class EncodingHandler implements FaceletHandler

 {

     private final FaceletHandler next;

     private final String encoding;

     private volatile List<String> _uniqueIdList;

     public EncodingHandler(FaceletHandler next, String encoding)

     {

         this.next = next;

         this.encoding = encoding;

     }

     public void apply(FaceletContext ctx, UIComponent parent) throws IOException, FacesException, FaceletException,

             ELException

     {

         this.next.apply(ctx, parent);

         if (this.encoding == null)

         {

             if (!ctx.getFacesContext().getAttributes().containsKey("facelets.Encoding"))

             {

                 ctx.getFacesContext().getAttributes().put("facelets.Encoding", "UTF-8");

             }

         }

         else

         {

             //Encoding of document takes precedence over f:view contentType

             ctx.getFacesContext().getAttributes().put("facelets.Encoding", this.encoding);

         }

     }

     /**

      * @return the _uniqueIdList

      */

     public List<String> getUniqueIdList()

     {

         return _uniqueIdList;

     }

     /**

      * @param uniqueIdList the _uniqueIdList to set

      */

     public void setUniqueIdList(List<String> uniqueIdList)

     {

         this._uniqueIdList = uniqueIdList;

     }

 }