/*
    * 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.html;
  
  import javax.faces.view.facelets.Tag;
  import javax.faces.view.facelets.TagAttribute;
  import javax.faces.view.facelets.TagAttributes;
  import javax.faces.view.facelets.TagDecorator;
  
  import org.apache.myfaces.view.facelets.tag.TagAttributesImpl;
  
  /**
   * @author Jacob Hookom
   * @version $Id$
   */
  public final class HtmlDecorator implements TagDecorator
  {
  
      public final static String XHTML_NAMESPACE = "http://www.w3.org/1999/xhtml";
  
      public final static HtmlDecorator INSTANCE = new HtmlDecorator();
  
      /**
       * 
       */
      public HtmlDecorator()
      {
          super();
      }
  
      /*
       * (non-Javadoc)
       * 
       * @see org.apache.myfaces.view.facelets.tag.TagDecorator#decorate(org.apache.myfaces.view.facelets.tag.Tag)
       */
      public Tag decorate(Tag tag)
      {
          if (XHTML_NAMESPACE.equals(tag.getNamespace()))
          {
              String n = tag.getLocalName();
              if ("a".equals(n))
              {
                  return new Tag(tag.getLocation(), HtmlLibrary.NAMESPACE, "commandLink", tag.getQName(), tag
                          .getAttributes());
              }
              if ("form".equals(n))
              {
                  return new Tag(tag.getLocation(), HtmlLibrary.NAMESPACE, "form", tag.getQName(), tag.getAttributes());
              }
              if ("input".equals(n))
              {
                  TagAttribute attr = tag.getAttributes().get("type");
                  if (attr != null)
                  {
                      String t = attr.getValue();
                      TagAttributes na = removeType(tag.getAttributes());
                      if ("text".equals(t))
                      {
                          return new Tag(tag.getLocation(), HtmlLibrary.NAMESPACE, "inputText", tag.getQName(), na);
                      }
                      if ("password".equals(t))
                      {
                          return new Tag(tag.getLocation(), HtmlLibrary.NAMESPACE, "inputSecret", tag.getQName(), na);
                      }
                      if ("hidden".equals(t))
                      {
                          return new Tag(tag.getLocation(), HtmlLibrary.NAMESPACE, "inputHidden", tag.getQName(), na);
                      }
                      if ("submit".equals(t))
                      {
                          return new Tag(tag.getLocation(), HtmlLibrary.NAMESPACE, "commandButton", tag.getQName(), na);
                      }
                  }
              }
          }
          return null;
      }
  
      private static TagAttributes removeType(TagAttributes attrs)
      {
          TagAttribute[] o = attrs.getAll();
          TagAttribute[] a = new TagAttribute[o.length - 1];
          int p = 0;
         for (int i = 0; i < o.length; i++)
         {
             if (!"type".equals(o[i].getLocalName()))
             {
                 a[p++] = o[i];
             }
         }
         return new TagAttributesImpl(a);
     }
 
 }