| /* |
| * Copyright 2003-2004 The Apache Software Foundation |
| * |
| * 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 org.apache.commons.collections.iterators; |
| |
| import java.util.ListIterator; |
| |
| /** |
| * Provides basic behaviour for decorating a list iterator with extra functionality. |
| * <p> |
| * All methods are forwarded to the decorated list iterator. |
| * |
| * @since Commons Collections 3.0 |
| * @version $Revision: 1.1 $ $Date: 2009/05/27 22:16:27 $ |
| * |
| * @author Rodney Waldhoff |
| * @author Stephen Colebourne |
| */ |
| public class AbstractListIteratorDecorator implements ListIterator { |
| |
| /** The iterator being decorated */ |
| protected final ListIterator iterator; |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Constructor that decorates the specified iterator. |
| * |
| * @param iterator the iterator to decorate, must not be null |
| * @throws IllegalArgumentException if the collection is null |
| */ |
| public AbstractListIteratorDecorator(ListIterator iterator) { |
| super(); |
| if (iterator == null) { |
| throw new IllegalArgumentException("ListIterator must not be null"); |
| } |
| this.iterator = iterator; |
| } |
| |
| /** |
| * Gets the iterator being decorated. |
| * |
| * @return the decorated iterator |
| */ |
| protected ListIterator getListIterator() { |
| return iterator; |
| } |
| |
| //----------------------------------------------------------------------- |
| public boolean hasNext() { |
| return iterator.hasNext(); |
| } |
| |
| public Object next() { |
| return iterator.next(); |
| } |
| |
| public int nextIndex() { |
| return iterator.nextIndex(); |
| } |
| |
| public boolean hasPrevious() { |
| return iterator.hasPrevious(); |
| } |
| |
| public Object previous() { |
| return iterator.previous(); |
| } |
| |
| public int previousIndex() { |
| return iterator.previousIndex(); |
| } |
| |
| public void remove() { |
| iterator.remove(); |
| } |
| |
| public void set(Object obj) { |
| iterator.set(obj); |
| } |
| |
| public void add(Object obj) { |
| iterator.add(obj); |
| } |
| |
| } |