/*
    * 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.renderkit.html;
  
  import org.apache.myfaces.shared.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: 1187700 $ $Date: 2011-10-22 07:19:37 -0500 (Sat, 22 Oct 2011) $
   *          <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);
  
              if (isCommonPropertiesOptimizationEnabled(context))
              {
                  CommonPropertyUtils.renderCommonPassthroughProperties(writer, 
                          CommonPropertyUtils.getCommonPropertiesMarked(component), component);
              }
              else
              {
                  HtmlRendererUtils.renderHTMLAttributes(writer, component, HTML.COMMON_PASSTROUGH_ATTRIBUTES);
              }
          }
          else
          {
              if (isCommonPropertiesOptimizationEnabled(context))
              {
                  long commonPropertiesMarked = CommonPropertyUtils.getCommonPropertiesMarked(component);
                  if (commonPropertiesMarked > 0)
                  {
                      span = true;
                     writer.startElement(layoutElement, component);
                     HtmlRendererUtils.writeIdIfNecessary(writer, component, context);
 
                     CommonPropertyUtils.renderCommonPassthroughProperties(writer, commonPropertiesMarked, component);
                 }
             }
             else
             {
                 span=HtmlRendererUtils.renderHTMLAttributesWithOptionalStartElement(writer,
                                                                                  component,
                                                                                  layoutElement,
                                                                                  HTML.COMMON_PASSTROUGH_ATTRIBUTES);
             }
         }
 
         RendererUtils.renderChildren(context, component);
         if (span)
         {
             writer.endElement(layoutElement);
         }
     }
 
 }