/*
    * 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.component;
  
  import java.io.IOException;
  import java.util.List;
  import java.util.Map;
  import javax.faces.FacesException;
  import javax.faces.component.UIComponent;
  import javax.faces.component.behavior.ClientBehavior;
  import javax.faces.context.FacesContext;
  import javax.faces.context.ResponseWriter;
  import javax.faces.render.Renderer;
  import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFRenderer;
  import org.apache.myfaces.shared.renderkit.ClientBehaviorEvents;
  import org.apache.myfaces.shared.renderkit.RendererUtils;
  import org.apache.myfaces.shared.renderkit.html.CommonEventUtils;
  import org.apache.myfaces.shared.renderkit.html.CommonPropertyUtils;
  import org.apache.myfaces.shared.renderkit.html.HTML;
  import org.apache.myfaces.shared.renderkit.html.HtmlRenderer;
  import org.apache.myfaces.shared.renderkit.html.HtmlRendererUtils;
  import org.apache.myfaces.shared.renderkit.html.util.ResourceUtils;
  
  /**
   *
   * @author Leonardo Uribe
   */
  @JSFRenderer(
      renderKitId = "HTML_BASIC",
      family = "javax.faces.Panel",
      type = "javax.faces.passthrough.Element")
  public class JsfElementRenderer extends HtmlRenderer
  {
  
      public boolean getRendersChildren()
      {
          return true;
      }
      
      @Override
      public void decode(FacesContext context, UIComponent component)
      {
          // Check for npe
          super.decode(context, component);
          
          HtmlRendererUtils.decodeClientBehaviors(context, component);
      }
  
      public void encodeBegin(FacesContext facesContext, UIComponent component)
          throws IOException
      {
          ResponseWriter writer = facesContext.getResponseWriter();
          String elementName = (String) 
              component.getPassThroughAttributes().get(Renderer.PASSTHROUGH_RENDERER_LOCALNAME_KEY);
  
          if (elementName == null)
          {
              throw new FacesException("jsf:element with clientId"
                  + component.getClientId(facesContext) + " requires 'elementName' passthrough attribute");
          }
          JsfElement jsfElement = (JsfElement) component;
          Map<String, List<ClientBehavior>> behaviors = jsfElement.getClientBehaviors();
          
          if (behaviors != null && !behaviors.isEmpty())
          {
              ResourceUtils.renderDefaultJsfJsInlineIfNecessary(facesContext, writer);
          }
          
          writer.startElement(elementName, component);
  
          if (!behaviors.isEmpty())
          {
              HtmlRendererUtils.writeIdAndName(writer, component, facesContext);
          }
          else
          {
              HtmlRendererUtils.writeIdIfNecessary(writer, component, facesContext);
          }
          
          // Write in the optimized way, because this is a renderer for internal use only
          long commonPropertiesMarked = CommonPropertyUtils.getCommonPropertiesMarked(component);
          if (behaviors.isEmpty())
          {
             CommonPropertyUtils.renderEventProperties(writer, commonPropertiesMarked, component);
             CommonPropertyUtils.renderFocusBlurEventProperties(writer, commonPropertiesMarked, component);
             CommonPropertyUtils.renderChangeSelectEventProperties(writer, commonPropertiesMarked, component);
         }
         else
         {
             long commonEventsMarked = CommonEventUtils.getCommonEventsMarked(component);
             CommonEventUtils.renderBehaviorizedEventHandlers(facesContext, writer, 
                    commonPropertiesMarked, commonEventsMarked, component, behaviors);
             CommonEventUtils.renderBehaviorizedFieldEventHandlers(facesContext, writer, 
                    commonPropertiesMarked, commonEventsMarked, component, 
                    component.getClientId(facesContext), behaviors);
         }
         CommonPropertyUtils.renderStyleProperties(writer, commonPropertiesMarked, component);
         HtmlRendererUtils.renderBehaviorizedAttribute(facesContext, writer, HTML.ONLOAD_ATTR, component,
                 ClientBehaviorEvents.LOAD, behaviors, HTML.ONLOAD_ATTR);
         HtmlRendererUtils.renderBehaviorizedAttribute(facesContext, writer, HTML.ONUNLOAD_ATTR, component,
                 ClientBehaviorEvents.UNLOAD, behaviors, HTML.ONUNLOAD_ATTR);
         
     }
 
     public void encodeChildren(FacesContext facesContext, UIComponent component)
         throws IOException
     {
         RendererUtils.renderChildren(facesContext, component);
     }
 
     public void encodeEnd(FacesContext facesContext, UIComponent component)
         throws IOException
     {
         ResponseWriter writer = facesContext.getResponseWriter();
         String elementName = (String) component.getPassThroughAttributes().get(
             Renderer.PASSTHROUGH_RENDERER_LOCALNAME_KEY);
         writer.endElement(elementName);
     }
     
     protected boolean isCommonPropertiesOptimizationEnabled(FacesContext facesContext)
     {
         return true;
     }
     
     protected boolean isCommonEventsOptimizationEnabled(FacesContext facesContext)
     {
         return true;
     }
 }