/*

  * Copyright 2004-2011 the Seasar Foundation and the Others.

  *

  * Licensed 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.seasar.teeda.core.render.html;

 import java.io.IOException;

 import javax.faces.component.UIComponent;

 import javax.faces.component.html.HtmlPanelGroup;

 import javax.faces.context.FacesContext;

 import javax.faces.context.ResponseWriter;

 import javax.faces.internal.IgnoreAttribute;

 import org.seasar.teeda.core.JsfConstants;

 import org.seasar.teeda.core.render.AbstractRenderer;

 import org.seasar.teeda.core.util.RendererUtil;

 /**

  * @author manhole

  */

 public class HtmlPanelGroupRenderer extends AbstractRenderer {

     public static final String COMPONENT_FAMILY = "javax.faces.Panel";

     public static final String RENDERER_TYPE = "javax.faces.Group";

     private final IgnoreAttribute ignoreComponent = new IgnoreAttribute();

     {

         ignoreComponent.addAttributeName(JsfConstants.ID_ATTR);

     }

     public void encodeBegin(FacesContext context, UIComponent component)

             throws IOException {

         assertNotNull(context, component);

         if (!component.isRendered()) {

             return;

         }

         encodeHtmlPanelGroupBegin(context, (HtmlPanelGroup) component);

     }

     protected void encodeHtmlPanelGroupBegin(FacesContext context,

             HtmlPanelGroup htmlPanelGroup) throws IOException {

         if (isWriteSpan(htmlPanelGroup)) {

             ResponseWriter writer = context.getResponseWriter();

             writer.startElement(JsfConstants.SPAN_ELEM, htmlPanelGroup);

             RendererUtil.renderIdAttributeIfNecessary(writer, htmlPanelGroup,

                     getIdForRender(context, htmlPanelGroup));

             renderRemainAttributes(htmlPanelGroup, writer, ignoreComponent);

         }

     }

     private boolean isWriteSpan(HtmlPanelGroup htmlPanelGroup) {

         return containsAttributeForRender(htmlPanelGroup, ignoreComponent);

     }

     public void encodeChildren(FacesContext context, UIComponent component)

             throws IOException {

         assertNotNull(context, component);

         if (!component.isRendered()) {

             return;

         }

         encodeHtmlPanelGroupChildren(context, (HtmlPanelGroup) component);

     }

     protected void encodeHtmlPanelGroupChildren(FacesContext context,

             HtmlPanelGroup htmlPanelGroup) throws IOException {

         encodeDescendantComponent(context, htmlPanelGroup);

     }

     public void encodeEnd(FacesContext context, UIComponent component)

             throws IOException {

         assertNotNull(context, component);

         if (!component.isRendered()) {

             return;

         }

         encodeHtmlPanelGroupEnd(context, (HtmlPanelGroup) component);

     }

     protected void encodeHtmlPanelGroupEnd(FacesContext context,

             HtmlPanelGroup htmlPanelGroup) throws IOException {

         if (isWriteSpan(htmlPanelGroup)) {

             ResponseWriter writer = context.getResponseWriter();

             writer.endElement(JsfConstants.SPAN_ELEM);

         }

     }

     public boolean getRendersChildren() {

         return true;

     }

 }