/*

  * 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.shared.context.flash;

 import java.io.Serializable;

 import java.util.Map;

 import javax.faces.FacesWrapper;

 import javax.faces.context.FacesContext;

 import javax.faces.context.Flash;

 import org.apache.commons.collections.map.LRUMap;

 /**

  *

  */

 class ClientWindowFlashTokenLRUMap extends LRUMap implements Serializable

 {

     public ClientWindowFlashTokenLRUMap()

     {

     }

     public ClientWindowFlashTokenLRUMap(int maxSize)

     {

         super(maxSize);

     }

     public ClientWindowFlashTokenLRUMap(int maxSize, boolean scanUntilRemovable)

     {

         super(maxSize, scanUntilRemovable);

     }

     public ClientWindowFlashTokenLRUMap(int maxSize, float loadFactor)

     {

         super(maxSize, loadFactor);

     }

     public ClientWindowFlashTokenLRUMap(int maxSize, float loadFactor, boolean scanUntilRemovable)

     {

         super(maxSize, loadFactor, scanUntilRemovable);

     }

     public ClientWindowFlashTokenLRUMap(Map map)

     {

         super(map);

     }

     public ClientWindowFlashTokenLRUMap(Map map, boolean scanUntilRemovable)

     {

         super(map, scanUntilRemovable);

     }

     @Override

     protected boolean removeLRU(LinkEntry entry)

     {

         FacesContext facesContext = FacesContext.getCurrentInstance();

         Flash flash = facesContext.getExternalContext().getFlash();

         if (flash != null)

         {

             ReleasableFlash rf = null;

             while (flash != null)

             {

                 if (flash instanceof ReleasableFlash)

                 {

                     rf = (ReleasableFlash) flash;

                     break;

                 }

                 if (flash instanceof FacesWrapper)

                 {

                     flash = ((FacesWrapper<? extends Flash>) flash).getWrapped();

                 }

                 else

                 {

                     flash = null;

                 }

             }

             if (rf != null)

             {

                 rf.clearFlashMap(facesContext, (String) entry.getKey(), (String) entry.getValue());

             }

         }

         return super.removeLRU(entry);

     }

 }