/*

  * 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.util;

 import javax.faces.context.FacesContext;

 import javax.portlet.RenderResponse;

 import org.seasar.teeda.core.context.portlet.PortletFacesContextImpl;

 /**

  * This is a utility class to check if a process is on Portlet environment.

  * 

  * @author shinsuke

  * 

  */

 public class PortletUtil {

     /** do not allow a new instance */

     private PortletUtil() {

     }

     /**

      *  Check if the thread is running on Portlet.

      * 

      * @param facesContext

      * @return

      */

     public static boolean isPortlet(FacesContext facesContext) {

         if (facesContext instanceof PortletFacesContextImpl) {

             return true;

         }

         return false;

     }

     /**

      * Check if the thread is processing render method.

      * 

      * @param facesContext

      * @return

      */

     public static boolean isRender(FacesContext facesContext) {

         if (isPortlet(facesContext)) {

             return facesContext.getExternalContext().getResponse() instanceof RenderResponse;

         }

         return false;

     }

 }