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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.collections.primitives.adapters;
18  
19  import java.util.ListIterator;
20  
21  import org.apache.commons.collections.primitives.FloatListIterator;
22  
23  /**
24   * Adapts a {@link Number}-valued {@link ListIterator ListIterator} 
25   * to the {@link FloatListIterator FloatListIterator} interface.
26   * <p />
27   * This implementation delegates most methods
28   * to the provided {@link FloatListIterator FloatListIterator} 
29   * implementation in the "obvious" way.
30   *
31   * @since Commons Primitives 1.0
32   * @version $Revision: 480462 $ $Date: 2006-11-29 03:15:00 -0500 (Wed, 29 Nov 2006) $
33   * @author Rodney Waldhoff 
34   */
35  public class ListIteratorFloatListIterator implements FloatListIterator {
36          
37      /**
38       * Create an {@link FloatListIterator FloatListIterator} wrapping
39       * the specified {@link ListIterator ListIterator}.  When
40       * the given <i>iterator</i> is <code>null</code>,
41       * returns <code>null</code>.
42       * 
43       * @param iterator the (possibly <code>null</code>) 
44       *        {@link ListIterator ListIterator} to wrap
45       * @return an {@link FloatListIterator FloatListIterator} wrapping the given 
46       *         <i>iterator</i>, or <code>null</code> when <i>iterator</i> is
47       *         <code>null</code>.
48       */
49      public static FloatListIterator wrap(ListIterator iterator) {
50          return null == iterator ? null : new ListIteratorFloatListIterator(iterator);
51      }    
52      
53      /**
54       * Creates an {@link FloatListIterator FloatListIterator} wrapping
55       * the specified {@link ListIterator ListIterator}.
56       * @see #wrap
57       */
58      public ListIteratorFloatListIterator(ListIterator iterator) {
59          _iterator = iterator;
60      }
61      
62      public int nextIndex() {
63          return _iterator.nextIndex();
64      }
65  
66      public int previousIndex() {
67          return _iterator.previousIndex();
68      }
69  
70      public boolean hasNext() {
71          return _iterator.hasNext();
72      }
73  
74      public boolean hasPrevious() {
75          return _iterator.hasPrevious();
76      }
77      
78      public float next() {
79          return ((Number)_iterator.next()).floatValue();
80      }
81  
82      public float previous() {
83          return ((Number)_iterator.previous()).floatValue();
84      }
85  
86      public void add(float element) {
87          _iterator.add(new Float(element));
88      }
89        
90      public void set(float element) {
91          _iterator.set(new Float(element));
92      }
93  
94      public void remove() {
95          _iterator.remove();
96      }
97        
98      private ListIterator _iterator = null;
99  
100 }