/*
    * 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 javax.el.ELException;
  import javax.faces.FacesException;
  import javax.faces.convert.Converter;
  import javax.faces.view.facelets.ConverterConfig;
  import javax.faces.view.facelets.ConverterHandler;
  import javax.faces.view.facelets.FaceletContext;
  import javax.faces.view.facelets.FaceletException;
  import javax.faces.view.facelets.MetaRuleset;
  import javax.faces.view.facelets.TagAttribute;
  
  import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFFaceletTag;
  
  /**
   * Register a named Converter instance 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/converter.html">tag
   * documentation</a>.
   * 
   * @author Jacob Hookom
   * @version $Id$
   */
  @JSFFaceletTag(
          name = "f:converter",
          bodyContent = "empty", 
          tagClass="org.apache.myfaces.taglib.core.ConverterImplTag")
  public final class ConvertDelegateHandler extends ConverterHandler
  {
  
      private final TagAttribute converterId;
  
      /**
       * @param config
       */
      public ConvertDelegateHandler(ConverterConfig config)
      {
          super(config);
          this.converterId = this.getAttribute("converterId");
      }
  
      /**
       * Uses the specified "converterId" to pull an instance from the Application
       * 
       * @see javax.faces.application.Application#createComponent(java.lang.String)
       * @see org.apache.myfaces.view.facelets.tag.jsf.ConverterHandler#createConverter(javax.faces.view.facelets.FaceletContext)
       */
      protected Converter createConverter(FaceletContext ctx) throws FacesException, ELException, FaceletException
      {
          return ctx.getFacesContext().getApplication().createConverter(this.getConverterId(ctx));
      }
  
      protected MetaRuleset createMetaRuleset(Class type)
      {
          return super.createMetaRuleset(type).ignoreAll();
      }
  
      @Override
      public String getConverterId(FaceletContext ctx)
      {
          if (converterId == null)
          {
              return null;
          }
          return converterId.getValue(ctx);
      }
  }