/*

  * 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.impl;

 import javax.faces.application.ProjectStage;

 import javax.faces.application.ViewHandler;

 import javax.faces.context.ExternalContext;

 import javax.faces.context.FacesContext;

 import javax.faces.view.facelets.FaceletCache;

 import javax.faces.view.facelets.FaceletCacheFactory;

 import org.apache.myfaces.shared.util.WebConfigParamUtils;

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

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

 /**

  * 

  * @author Leonardo Uribe

  * @since 2.1.0

  *

  */

 public class FaceletCacheFactoryImpl extends FaceletCacheFactory

 {

     private final static String PARAM_REFRESH_PERIOD_DEPRECATED = "facelets.REFRESH_PERIOD";

     private final static String[] PARAMS_REFRESH_PERIOD

             = {ViewHandler.FACELETS_REFRESH_PERIOD_PARAM_NAME, PARAM_REFRESH_PERIOD_DEPRECATED};

     @Override

     public FaceletCache getFaceletCache()

     {

         FacesContext context = FacesContext.getCurrentInstance();

         ExternalContext eContext = context.getExternalContext();

         // refresh period

         long refreshPeriod;

         if(context.isProjectStage(ProjectStage.Production))

         {

             refreshPeriod = WebConfigParamUtils.getLongInitParameter(eContext, PARAMS_REFRESH_PERIOD,

                     FaceletViewDeclarationLanguage.DEFAULT_REFRESH_PERIOD_PRODUCTION);

         }

         else

         {

             refreshPeriod = WebConfigParamUtils.getLongInitParameter(eContext, PARAMS_REFRESH_PERIOD,

                     FaceletViewDeclarationLanguage.DEFAULT_REFRESH_PERIOD);

         }

         String elMode = WebConfigParamUtils.getStringInitParameter(

                     context.getExternalContext(),

                     FaceletCompositionContextImpl.INIT_PARAM_CACHE_EL_EXPRESSIONS, 

                         ELExpressionCacheMode.noCache.name());

         if (ELExpressionCacheMode.alwaysRecompile.toString().equals(elMode))

         {

             return new CacheELFaceletCacheImpl(refreshPeriod);

         }

         else

         {

             return new FaceletCacheImpl(refreshPeriod);

         }

     }

 }