/*
    * 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.commons.collections.primitives.adapters;
  
  import java.lang.reflect.Array;
  import java.util.Collection;
  import java.util.Iterator;
  
  import org.apache.commons.collections.primitives.CharCollection;
  
  /**
   * @since Commons Primitives 1.0
   * @version $Revision: 480462 $ $Date: 2006-11-29 03:15:00 -0500 (Wed, 29 Nov 2006) $
   * @author Rodney Waldhoff 
   */
  abstract class AbstractCharCollectionCollection implements Collection {
      
      public boolean add(Object element) {
          return getCharCollection().add(((Character)element).charValue());
      }
  
      public boolean addAll(Collection c) {
          return getCharCollection().addAll(CollectionCharCollection.wrap(c));
      }
          
      public void clear() {
          getCharCollection().clear();
      }
  
      public boolean contains(Object element) {
          return getCharCollection().contains(((Character)element).charValue());
      }
     
      
      public boolean containsAll(Collection c) {
          return getCharCollection().containsAll(CollectionCharCollection.wrap(c));
      }        
          
      public String toString() {
          return getCharCollection().toString();
      }
      
      public boolean isEmpty() {
          return getCharCollection().isEmpty();
      }
      
      /**
       * {@link CharIteratorIterator#wrap wraps} the 
       * {@link org.apache.commons.collections.primitives.CharIterator CharIterator}
       * returned by my underlying 
       * {@link CharCollection CharCollection}, 
       * if any.
       */
      public Iterator iterator() {
          return CharIteratorIterator.wrap(getCharCollection().iterator());
      }
       
      public boolean remove(Object element) {
          return getCharCollection().removeElement(((Character)element).charValue());
      }
      
      public boolean removeAll(Collection c) {
          return getCharCollection().removeAll(CollectionCharCollection.wrap(c));
      }
      
      public boolean retainAll(Collection c) {
          return getCharCollection().retainAll(CollectionCharCollection.wrap(c));
      }
      
      public int size() {
          return getCharCollection().size();
      }
      
      public Object[] toArray() {
          char[] a = getCharCollection().toArray();
          Object[] A = new Object[a.length];
          for(int i=0;i<a.length;i++) {
              A[i] = new Character(a[i]);
          }
          return A;
      }
      
      public Object[] toArray(Object[] A) {
          char[] a = getCharCollection().toArray();
          if(A.length < a.length) {
             A = (Object[])(Array.newInstance(A.getClass().getComponentType(), a.length));
         }
         for(int i=0;i<a.length;i++) {
             A[i] = new Character(a[i]);
         }
         if(A.length > a.length) {
             A[a.length] = null;
         }
 
         return A;
     }
 
     protected abstract CharCollection getCharCollection();            
 }