/*
* Copyright (C) 2007 Google Inc.
*
* 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 com.google.common.collect;
import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import java.util.Collection;
import java.util.List;
import java.util.ListIterator;
import javax.annotation.Nullable;
/**
* A list which forwards all its method calls to another list. Subclasses should
* override one or more methods to modify the behavior of the backing list as
* desired per the <a
* href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
*
* <p>This class does not implement {@link java.util.RandomAccess}. If the
* delegate supports random access, the {@code ForwadingList} subclass should
* implement the {@code RandomAccess} interface.
*
* @author Mike Bostock
* @since 2010.01.04 <b>stable</b> (imported from Google Collections Library)
*/
@GwtCompatible
public abstract class ForwardingList<E> extends ForwardingCollection<E>
implements List<E> {
@Override protected abstract List<E> delegate();
public void add(int index, E element) {
delegate().add(index, element);
}
public boolean addAll(int index, Collection<? extends E> elements) {
return delegate().addAll(index, elements);
}
public E get(int index) {
return delegate().get(index);
}
public int indexOf(Object element) {
return delegate().indexOf(element);
}
public int lastIndexOf(Object element) {
return delegate().lastIndexOf(element);
}
public ListIterator<E> listIterator() {
return delegate().listIterator();
}
public ListIterator<E> listIterator(int index) {
return delegate().listIterator(index);
}
public E remove(int index) {
return delegate().remove(index);
}
public E set(int index, E element) {
return delegate().set(index, element);
}
@GwtIncompatible("List.subList")
public List<E> subList(int fromIndex, int toIndex) {
return Platform.subList(delegate(), fromIndex, toIndex);
}
@Override public boolean equals(@Nullable Object object) {
return object == this || delegate().equals(object);
}
@Override public int hashCode() {
return delegate().hashCode();
}
}