/*******************************************************************************
* Copyright (c) 2006-2008, 2015 Cerner Corporation and others.
* 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:
* Brad Reynolds - initial API and implementation
* Matthew Hall - bug 208332, 237718
* Stefan Xenos <sxenos@gmail.com> - Bug 335792
******************************************************************************/
package org.eclipse.core.internal.databinding.observable;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import org.eclipse.core.databinding.observable.list.DecoratingObservableList;
import org.eclipse.core.databinding.observable.list.IObservableList;
/**
* ObservableList implementation that prevents modification by consumers. Events
* in the originating wrapped list are propagated and thrown from this instance
* when appropriate. All mutators throw an UnsupportedOperationException.
*
* @param <E>
* the type of the elements in this list
*
* @since 1.0
*/
public class UnmodifiableObservableList<E> extends DecoratingObservableList<E> {
private List<E> unmodifiableList;
/**
* @param decorated
*/
public UnmodifiableObservableList(IObservableList<E> decorated) {
super(decorated, false);
this.unmodifiableList = Collections.unmodifiableList(decorated);
}
@Override
public void add(int index, Object o) {
throw new UnsupportedOperationException();
}
@Override
public boolean add(E o) {
throw new UnsupportedOperationException();
}
@Override
public boolean addAll(Collection<? extends E> c) {
throw new UnsupportedOperationException();
}
@Override
public boolean addAll(int index, Collection<? extends E> c) {
throw new UnsupportedOperationException();
}
@Override
public void clear() {
throw new UnsupportedOperationException();
}
@Override
public Iterator<E> iterator() {
getterCalled();
return unmodifiableList.iterator();
}
@Override
public ListIterator<E> listIterator() {
return listIterator(0);
}
@Override
public ListIterator<E> listIterator(int index) {
getterCalled();
return unmodifiableList.listIterator(index);
}
@Override
public E move(int oldIndex, int newIndex) {
throw new UnsupportedOperationException();
}
@Override
public E remove(int index) {
throw new UnsupportedOperationException();
}
@Override
public boolean remove(Object o) {
throw new UnsupportedOperationException();
}
@Override
public boolean removeAll(Collection<?> c) {
throw new UnsupportedOperationException();
}
@Override
public boolean retainAll(Collection<?> c) {
throw new UnsupportedOperationException();
}
@Override
public E set(int index, E element) {
throw new UnsupportedOperationException();
}
@Override
public List<E> subList(int fromIndex, int toIndex) {
getterCalled();
return unmodifiableList.subList(fromIndex, toIndex);
}
@Override
public synchronized void dispose() {
unmodifiableList = null;
super.dispose();
}
}