/*

  * 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 javax.faces.view.facelets;

 import javax.faces.view.ValueHolderAttachedObjectHandler;

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

 /**

  * Handles setting a Converter instance on a ValueHolder. Will wire all attributes set to the Converter instance

  * created/fetched. Uses the "binding" attribute for grabbing instances to apply attributes to. <p/> Will only

  * set/create Converter is the passed UIComponent's parent is null, signifying that it wasn't restored from an existing

  * tree.

  * 

  * @see javax.faces.webapp.ConverterELTag

  * @see javax.faces.convert.Converter

  * @see javax.faces.component.ValueHolder

  */

 @JSFFaceletTag

 public class ConverterHandler extends FaceletsAttachedObjectHandler implements ValueHolderAttachedObjectHandler

 {

     private String converterId;

     private TagHandlerDelegate helper;

     public ConverterHandler(ConverterConfig config)

     {

         super(config);

         converterId = config.getConverterId();

     }

     public String getConverterId (FaceletContext ctx)

     {

         return converterId;

     }

     protected TagHandlerDelegate getTagHandlerDelegate()

     {

         if (helper == null)

         {

             // Spec seems to indicate that the helper is created here, as opposed to other Handler

             // instances, where it's presumably a new instance for every getter call.

             this.helper = delegateFactory.createConverterHandlerDelegate (this);

         }

         return helper;

     }

 }