/*

  * 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.lifecycle;

 import javax.faces.context.FacesContext;

 import javax.faces.event.PhaseId;

 import org.apache.myfaces.view.facelets.ViewPoolProcessor;

 /**

  * Implements the invoke application phase (JSF Spec 2.2.5)

  * 

  * @author Nikolay Petrov (latest modification by $Author$)

  * @version $Revision$ $Date$

  */

 class InvokeApplicationExecutor extends PhaseExecutor

 {

     private ViewPoolProcessor viewPoolProcessor;

     private boolean initialized = false;

     public boolean execute(FacesContext facesContext)

     {

         if (facesContext.getViewRoot() == null)

         {

             throw new ViewNotFoundException("A view is required to execute "+facesContext.getCurrentPhaseId());

         }

         facesContext.getViewRoot().processApplication(facesContext);

         ViewPoolProcessor processor = getViewPoolProcessor(facesContext);

         if (processor != null)

         {

             processor.processDeferredNavigation(facesContext);

         }

         return false;

     }

     public PhaseId getPhase()

     {

         return PhaseId.INVOKE_APPLICATION;

     }

     private ViewPoolProcessor getViewPoolProcessor(FacesContext context)

     {

         if (!initialized)

         {

             viewPoolProcessor = ViewPoolProcessor.getInstance(context);

             initialized = true;

         }

         return viewPoolProcessor;

     }

 }