/*
* Copyright 2003-2016 JetBrains s.r.o.
*
* 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 jetbrains.mps.nodeEditor.cells.collections;
import org.jetbrains.annotations.NotNull;
import java.util.Iterator;
/**
* User: shatalin
* Date: 10/02/16
*/
class UnmodifiableContainer<T> implements Container<T> {
private final Container<T> myContainer;
UnmodifiableContainer(Container<T> container) {
myContainer = container;
}
@Override
public int size() {
return myContainer.size();
}
@Override
public boolean isEmpty() {
return myContainer.isEmpty();
}
@Override
public T add(@NotNull T item) {
throw new UnsupportedOperationException();
}
@Override
public T addBefore(@NotNull T item, T anchor) {
throw new UnsupportedOperationException();
}
@Override
public T remove(@NotNull T item) {
throw new UnsupportedOperationException();
}
@Override
public boolean contains(@NotNull T item) {
return myContainer.contains(item);
}
@NotNull
@Override
public Iterator<T> iterator() {
return new UnmodifiableIterator<T>(myContainer.iterator());
}
@NotNull
@Override
public Iterator<T> iterator(T anchor, boolean forward) {
return new UnmodifiableIterator<T>(myContainer.iterator(anchor, forward));
}
@Override
public T getFirst() {
return myContainer.getFirst();
}
@Override
public T getLast() {
return myContainer.getLast();
}
}