/*

  * 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.tag.jsf.core;

 import java.io.IOException;

 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.TagAttribute;

 import javax.faces.view.facelets.TagConfig;

 import javax.faces.view.facelets.TagException;

 import javax.faces.view.facelets.TagHandler;

 import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFFaceletTag;

 /**

  * Register a named facet on the UIComponent associated with the closest parent UIComponent custom action. <p/> See <a

  * target="_new" href="http://java.sun.com/j2ee/javaserverfaces/1.1_01/docs/tlddocs/f/facet.html">tag documentation</a>.

  * 

  * @author Jacob Hookom

  * @version $Id$

  */

 @JSFFaceletTag(

         name = "f:facet",

         bodyContent = "JSP", 

         tagClass="javax.faces.webapp.FacetTag")

 public final class FacetHandler extends TagHandler 

     implements javax.faces.view.facelets.FacetHandler

 {

     public static final String KEY = "facelets.FACET_NAME";

     protected final TagAttribute name;

     public FacetHandler(TagConfig config)

     {

         super(config);

         this.name = this.getRequiredAttribute("name");

     }

     /*

      * (non-Javadoc)

      * 

      * @see javax.faces.view.facelets.FaceletHandler#apply(javax.faces.view.facelets.FaceletContext, javax.faces.component.UIComponent)

      */

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

             ELException

     {

         if (parent == null)

         {

             throw new TagException(this.tag, "Parent UIComponent was null");

         }

         parent.getAttributes().put(KEY, this.name.getValue(ctx));

         try

         {

             this.nextHandler.apply(ctx, parent);

         }

         finally

         {

             parent.getAttributes().remove(KEY);

         }

     }

     public String getFacetName(FaceletContext ctx)

     {

         return this.name.getValue(ctx);

     }

 }