/*
    * 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.cdi.view;
  
  import javax.enterprise.event.Observes;
  import javax.enterprise.inject.spi.AfterBeanDiscovery;
  import javax.enterprise.inject.spi.AnnotatedType;
  import javax.enterprise.inject.spi.BeanManager;
  import javax.enterprise.inject.spi.BeforeBeanDiscovery;
  import javax.enterprise.inject.spi.Extension;
  import javax.faces.view.ViewScoped;
  
  /**
   * Handle ViewScope related features.
   * 
   * @author Leonardo Uribe
   */
  public class ViewScopeContextExtension implements Extension
  {
      private ViewScopeContextImpl viewScopeContext;
  
      void beforeBeanDiscovery(
          @Observes final BeforeBeanDiscovery event, BeanManager beanManager)
      {
          event.addScope(ViewScoped.class, true, true);
          // Register ViewScopeBeanHolder as a bean with CDI annotations, so the system
          // can take it into account, and use it later when necessary.
          AnnotatedType appContext = beanManager.createAnnotatedType(ApplicationContextBean.class);
          event.addAnnotatedType(appContext);
          AnnotatedType bean = beanManager.createAnnotatedType(ViewScopeBeanHolder.class);
          event.addAnnotatedType(bean);
      }
      
      void afterBeanDiscovery(@Observes AfterBeanDiscovery afterBeanDiscovery, BeanManager beanManager)
      {
          viewScopeContext = new ViewScopeContextImpl(beanManager);
          afterBeanDiscovery.addContext(viewScopeContext);
      }
  }