/*

  *  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.shared_impl.renderkit.html;

 import org.apache.myfaces.shared_impl.renderkit.RendererUtils;

 import javax.faces.component.UIComponent;

 import javax.faces.component.UIViewRoot;

 import javax.faces.component.html.HtmlPanelGroup;

 import javax.faces.context.FacesContext;

 import javax.faces.context.ResponseWriter;

 import java.io.IOException;

 /**

  * @author Martin Marinschek

  * @version $Revision: $ $Date: $

  *          <p/>

  *          $Log: $

  */

 public class HtmlGroupRendererBase

         extends HtmlRenderer 

 {

     private static final String LAYOUT_BLOCK_VALUE = "block";

     public boolean getRendersChildren()

     {

         return true;

     }

     public void encodeBegin(FacesContext context, UIComponent component)

             throws IOException

     {

     }

     public void encodeChildren(FacesContext context, UIComponent component)

         throws IOException

     {

     }

     public void encodeEnd(FacesContext context, UIComponent component)

             throws IOException

     {

         ResponseWriter writer = context.getResponseWriter();

         boolean span = false;

         // will be SPAN or DIV, depending on the layout attribute value

         String layoutElement = HTML.SPAN_ELEM;

         HtmlPanelGroup panelGroup = (HtmlPanelGroup) component;

         // if layout is 'block', render DIV instead SPAN

         String layout = panelGroup.getLayout();

         if (layout != null && layout.equals(LAYOUT_BLOCK_VALUE))

         {

             layoutElement = HTML.DIV_ELEM;

         }

         if(component.getId()!=null && !component.getId().startsWith(UIViewRoot.UNIQUE_ID_PREFIX))

         {

             span = true;

             writer.startElement(layoutElement, component);

             HtmlRendererUtils.writeIdIfNecessary(writer, component, context);

             HtmlRendererUtils.renderHTMLAttributes(writer, component, HTML.COMMON_PASSTROUGH_ATTRIBUTES);

         }

         else

         {

             span=HtmlRendererUtils.renderHTMLAttributesWithOptionalStartElement(writer,

                                                                              component,

                                                                              layoutElement,

                                                                              HTML.COMMON_PASSTROUGH_ATTRIBUTES);

         }

         RendererUtils.renderChildren(context, component);

         if (span)

         {

             writer.endElement(layoutElement);

         }

     }

 }