1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.util;
24  
25  import java.util.ArrayList;
26  import java.util.Collection;
27  import java.util.List;
28  
29  /**
30   * <a href="TranslatedList.java.html"><b><i>View Source</i></b></a>
31   *
32   * @author Brian Wing Shun Chan
33   *
34   */
35  public abstract class TranslatedList<E, F> extends ListWrapper<E> {
36  
37      public TranslatedList(List<E> newList, List<F> oldList) {
38          super(newList);
39  
40          _oldList = oldList;
41      }
42  
43      public boolean add(E o) {
44          _oldList.add(toOldObject(o));
45  
46          return super.add(o);
47      }
48  
49      public void add(int index, E element) {
50          _oldList.add(index, toOldObject(element));
51  
52          super.add(index, element);
53      }
54  
55      public boolean addAll(Collection<? extends E> c) {
56          for (E o : c) {
57              _oldList.add(toOldObject(o));
58          }
59  
60          return super.addAll(c);
61      }
62  
63      public boolean addAll(int index, Collection<? extends E> c) {
64          for (E o : c) {
65              _oldList.add(index++, toOldObject(o));
66          }
67  
68          return super.addAll(c);
69      }
70  
71      public boolean remove(Object o) {
72          _oldList.remove(toOldObject((E)o));
73  
74          return super.remove(o);
75      }
76  
77      public E remove(int index) {
78          _oldList.remove(index);
79  
80          return super.remove(index);
81      }
82  
83      public boolean removeAll(Collection<?> c) {
84          List<F> tempList = new ArrayList<F>();
85  
86          for (Object o : c) {
87              tempList.add(toOldObject((E)o));
88          }
89  
90          _oldList.removeAll(tempList);
91  
92          return super.removeAll(c);
93      }
94  
95      public boolean retainAll(Collection<?> c) {
96          List<F> tempList = new ArrayList<F>();
97  
98          for (Object o : c) {
99              tempList.add(toOldObject((E)o));
100         }
101 
102         _oldList.retainAll(tempList);
103 
104         return super.retainAll(c);
105     }
106 
107     public E set(int index, E element) {
108         _oldList.set(index, toOldObject(element));
109 
110         return super.set(index, element);
111     }
112 
113     public List<E> subList(int fromIndex, int toIndex) {
114         List<E> newList = super.subList(fromIndex, toIndex);
115         List<F> oldList = _oldList.subList(fromIndex, toIndex);
116 
117         return newInstance(newList, oldList);
118     }
119 
120     protected abstract TranslatedList<E, F> newInstance(
121         List<E> newList, List<F> oldList);
122 
123     protected abstract F toOldObject(E o);
124 
125     private List<F> _oldList;
126 
127 }