/*

  * Copyright 2004-2011 the Seasar Foundation and the Others.

  *

  * Licensed 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.internal;

 import java.io.Serializable;

 import java.util.Collection;

 import java.util.HashMap;

 import java.util.Iterator;

 import java.util.Map;

 import java.util.Set;

 import javax.faces.component.UIComponent;

 import org.seasar.framework.util.AssertionUtil;

 /**

  * @author shot

  * 

  * This class might be changed without notice. Please do not use it

  * excluding the JSF specification part.

  */

 public class ComponentFacetMapWrapper implements Map, Serializable {

     private static final long serialVersionUID = 3977016266726585651L;

     private UIComponent parent = null;

     private Map facetMap = new HashMap();

     public ComponentFacetMapWrapper(UIComponent parent) {

         this.parent = parent;

     }

     public int size() {

         return facetMap.size();

     }

     public void clear() {

         facetMap.clear();

     }

     public boolean isEmpty() {

         return facetMap.isEmpty();

     }

     public boolean containsKey(Object key) {

         return facetMap.containsKey(key);

     }

     public boolean containsValue(Object value) {

         return facetMap.containsValue(value);

     }

     public Collection values() {

         return facetMap.values();

     }

     public Set entrySet() {

         return facetMap.entrySet();

     }

     public Set keySet() {

         return facetMap.keySet();

     }

     public Object get(Object key) {

         return facetMap.get(key);

     }

     public Object remove(Object key) {

         UIComponent facet = (UIComponent) facetMap.remove(key);

         if (facet != null) {

             facet.setParent(null);

         }

         return facet;

     }

     public Object put(Object key, Object facet) {

         AssertionUtil.assertNotNull("key", key);

         AssertionUtil.assertNotNull("facet", facet);

         checkKeyClass(key);

         checkValueClass(facet);

         setNewParent((String) key, (UIComponent) facet);

         return facetMap.put(key, facet);

     }

     public void putAll(Map map) {

         for (Iterator itr = map.entrySet().iterator(); itr.hasNext();) {

             Map.Entry entry = (Map.Entry) itr.next();

             put(entry.getKey(), entry.getValue());

         }

     }

     private void setNewParent(String facetName, UIComponent facet) {

         UIComponent oldParent = facet.getParent();

         if (oldParent != null) {

             oldParent.getFacets().remove(facetName);

         }

         facet.setParent(parent);

     }

     private static void checkKeyClass(Object key) {

         if (!(key instanceof String)) {

             throw new ClassCastException("key");

         }

     }

     private static void checkValueClass(Object value) {

         if (!(value instanceof UIComponent)) {

             throw new ClassCastException("value");

         }

     }

 }