/*

  * 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.application.Application;

 import javax.faces.application.ApplicationFactory;

 import javax.faces.context.FacesContext;

 import javax.faces.internal.FactoryFinderUtil;

 import org.seasar.framework.util.ClassUtil;

 import org.seasar.teeda.core.exception.IllegalClassTypeException;

 /**

  * @author shot

  */

 public class ApplicationUtil {

     private ApplicationUtil() {

     }

     public static Application getApplicationFromFactory() {

         ApplicationFactory appFactory = FactoryFinderUtil

                 .getApplicationFactory();

         return appFactory.getApplication();

     }

     public static Application getApplicationFromContext() {

         FacesContext context = FacesContext.getCurrentInstance();

         return context.getApplication();

     }

     public static void verifyClassType(Class expected, Class actual) {

         if (!ClassUtil.isAssignableFrom(expected, actual)) {

             throw new IllegalClassTypeException(expected, actual);

         }

     }

 }