/*

  * 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.webapp;

 import javax.faces.application.Application;

 import javax.faces.component.UIComponent;

 import javax.faces.component.ValueHolder;

 import javax.faces.context.FacesContext;

 import javax.faces.convert.Converter;

 import javax.faces.el.ValueBinding;

 import javax.servlet.jsp.JspException;

 import javax.servlet.jsp.tagext.Tag;

 import javax.servlet.jsp.tagext.TagSupport;

 /**

  * see Javadoc of <a href="http://java.sun.com/javaee/javaserverfaces/1.2/docs/api/index.html">JSF Specification</a>

  *

  * @author Manfred Geiler (latest modification by $Author: skitching $)

  * @version $Revision: 676298 $ $Date: 2008-07-13 05:31:48 -0500 (Sun, 13 Jul 2008) $

  * @deprecated replaced by {@link ConverterELTag}

  */

 public class ConverterTag

         extends TagSupport

 {

     private static final long serialVersionUID = -6168345066829108081L;

     private String _converterId;

     private String _binding;

     public ConverterTag()

     {

         super();

     }

     public void setConverterId(String converterId)

     {

         _converterId = converterId;

     }

     public int doStartTag()

             throws JspException

     {

         UIComponentClassicTagBase componentTag = UIComponentClassicTagBase.getParentUIComponentClassicTagBase(pageContext);

         if (componentTag == null)

         {

             throw new JspException("no parent UIComponentTag found");

         }

         if (!componentTag.getCreated())

         {

             return Tag.SKIP_BODY;

         }

         Converter converter = createConverter();

         UIComponent component = componentTag.getComponentInstance();

         if (component == null)

         {

             throw new JspException("parent UIComponentTag has no UIComponent");

         }

         if (!(component instanceof ValueHolder))

         {

             throw new JspException("UIComponent is no ValueHolder");

         }

         ((ValueHolder)component).setConverter(converter);

         return Tag.SKIP_BODY;

     }

     public void release()

     {

         super.release();

         _converterId = null;

         _binding = null;

     }

     protected Converter createConverter()

             throws JspException

     {

         FacesContext facesContext = FacesContext.getCurrentInstance();

         Application application = facesContext.getApplication();

         if(_binding != null) {

             ValueBinding vb = application.createValueBinding(_binding);

             if(vb != null) {

                 Converter converter = (Converter) vb.getValue(facesContext);

                 if(converter != null) {

                     return converter;

                 }

             }

         }

         if (UIComponentTag.isValueReference(_converterId))

         {

             ValueBinding vb = facesContext.getApplication().createValueBinding(_converterId);

             return application.createConverter((String)vb.getValue(facesContext));

         }

         return application.createConverter(_converterId);

     }

     public void setBinding(String binding) throws javax.servlet.jsp.JspException

     {

         _binding = binding;

     }

 }