| /******************************************************************************* |
| * Copyright (c) 2010 Oracle. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v1.0, which accompanies this distribution |
| * and is available at http://www.eclipse.org/legal/epl-v10.html. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.common.utility.internal.iterators; |
| |
| import java.util.List; |
| import java.util.ListIterator; |
| |
| import org.eclipse.jpt.common.utility.internal.StringTools; |
| import org.eclipse.jpt.common.utility.internal.iterables.ListIterable; |
| |
| /** |
| * Wrap a list iterator on elements of type <code>E1</code>, converting it into |
| * a list iterator on elements of type <code>E2</code>. Assume the wrapped |
| * list iterator returns only elements of type <code>E2</code>. |
| * |
| * @param <E1> input: the type of elements returned by the wrapped list iterator |
| * @param <E2> output: the type of elements returned by the list iterator |
| * |
| * @see org.eclipse.jpt.common.utility.internal.iterables.SubListIterableWrapper |
| */ |
| public class SubListIteratorWrapper<E1, E2> |
| implements ListIterator<E2> |
| { |
| private final ListIterator<E1> listIterator; |
| |
| |
| public SubListIteratorWrapper(List<E1> list) { |
| this(list.listIterator()); |
| } |
| |
| public SubListIteratorWrapper(ListIterable<E1> listIterable) { |
| this(listIterable.iterator()); |
| } |
| |
| public SubListIteratorWrapper(ListIterator<E1> iterator) { |
| super(); |
| this.listIterator = iterator; |
| } |
| |
| public boolean hasNext() { |
| return this.listIterator.hasNext(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public E2 next() { |
| return (E2) this.listIterator.next(); |
| } |
| |
| public int nextIndex() { |
| return this.listIterator.nextIndex(); |
| } |
| |
| public boolean hasPrevious() { |
| return this.listIterator.hasPrevious(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public E2 previous() { |
| return (E2) this.listIterator.previous(); |
| } |
| |
| public int previousIndex() { |
| return this.listIterator.previousIndex(); |
| } |
| |
| public void remove() { |
| this.listIterator.remove(); |
| } |
| |
| public void set(E2 e) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public void add(E2 e) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public String toString() { |
| return StringTools.buildToStringFor(this, this.listIterator); |
| } |
| |
| } |