/*
    * 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 javax.faces.component;
  
  import java.io.Serializable;
  import java.util.*;
  
  /**
   * @author Manfred Geiler (latest modification by $Author: skitching $)
   * @version $Revision: 676298 $ $Date: 2008-07-13 05:31:48 -0500 (Sun, 13 Jul 2008) $
   */
  class _ComponentFacetMap<V extends UIComponent>
          implements Map<String, V>, Serializable
  {
      private static final long serialVersionUID = -3456937594422167629L;
      private UIComponent _component;
      private Map<String, V> _map = new HashMap<String, V>();
  
      _ComponentFacetMap(UIComponent component)
      {
          _component = component;
      }
  
      public int size()
      {
          return _map.size();
      }
  
      public void clear()
      {
          _map.clear();
      }
  
      public boolean isEmpty()
      {
          return _map.isEmpty();
      }
  
      public boolean containsKey(Object key)
      {
          checkKey(key);
          return _map.containsKey(key);
      }
  
      public boolean containsValue(Object value)
      {
          checkValue(value);
          return _map.containsValue(value);
      }
  
      public Collection<V> values()
      {
          return _map.values();
      }
  
      public void putAll(Map<? extends String, ? extends V> t)
      {
          for (Iterator it = t.entrySet().iterator(); it.hasNext(); )
          {
              Map.Entry<String, V> entry = (Entry<String, V>)it.next();
              put(entry.getKey(), entry.getValue());
          }
      }
  
      public Set<Entry<String, V>> entrySet()
      {
          return _map.entrySet();
      }
  
      public Set<String> keySet()
      {
          return _map.keySet();
      }
  
      public V get(Object key)
      {
          checkKey(key);
          return _map.get(key);
      }
  
      public V remove(Object key)
      {
          checkKey(key);
         V facet = _map.remove(key);
         if (facet != null) facet.setParent(null);
         return facet;
     }
 
     public V put(String key, V value)
     {
         checkKey(key);
         checkValue(value);
         setNewParent(key, value);
         return _map.put(key, value);
     }
 
 
     private void setNewParent(String facetName, UIComponent facet)
     {
         UIComponent oldParent = facet.getParent();
         if (oldParent != null)
         {
             oldParent.getFacets().remove(facetName);
         }
         facet.setParent(_component);
     }
 
     private void checkKey(Object key)
     {
         if (key == null) throw new NullPointerException("key");
         if (!(key instanceof String)) throw new ClassCastException("key is not a String");
     }
 
     private void checkValue(Object value)
     {
         if (value == null) throw new NullPointerException("value");
         if (!(value instanceof UIComponent)) throw new ClassCastException("value is not a UIComponent");
     }
 
 }