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/*
 * Copyright 2012 the original author or authors.
 *
 * 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 groovy.swing.impl;

import javax.swing.*;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;

/**
 * A {@code ListModel} implementation that's backed by a live {@code List}.
 *
 * @author Andres Almiray
 */
public class ListWrapperListModel extends AbstractListModel {
    private final List delegate;

    public ListWrapperListModel(List delegateList) {
        this.delegate = delegateList;
    }

    public List getDelegateList() {
        return delegate;
    }

    public int getSize() {
        return delegate.size();
    }

    public Object getElementAt(int i) {
        return delegate.get(i);
    }

    public E set(int i, E e) {
        E element = delegate.set(i, e);
        fireContentsChanged(this, i, i);
        return element;
    }

    public void clear() {
        int i = delegate.size() - 1;
        delegate.clear();
        if (i >= 0) {
            fireIntervalRemoved(this, 0, i);
        }
    }

    public int lastIndexOf(Object o) {
        return delegate.lastIndexOf(o);
    }

    public boolean contains(Object o) {
        return delegate.contains(o);
    }

    public ListIterator listIterator() {
        return delegate.listIterator();
    }

    public boolean isEmpty() {
        return delegate.isEmpty();
    }

    public int indexOf(Object o) {
        return delegate.indexOf(o);
    }

    public void add(int i, E e) {
        int index = delegate.size();
        delegate.add(i, e);
        fireIntervalAdded(this, index, index);
    }

    public Iterator iterator() {
        return delegate.iterator();
    }

    public boolean addAll(Collection es) {
        int i = delegate.size();
        boolean added = delegate.addAll(es);
        if (added) fireIntervalAdded(this, i, i + es.size());
        return added;
    }

    public E remove(int i) {
        E element = delegate.remove(i);
        fireIntervalRemoved(this, i, i);
        return element;
    }

    public boolean addAll(int i, Collection es) {
        boolean added = delegate.addAll(i, es);
        if (added) fireIntervalAdded(this, i, i + es.size());
        return added;
    }

    public ListIterator listIterator(int i) {
        return delegate.listIterator(i);
    }

    public boolean containsAll(Collection objects) {
        return delegate.containsAll(objects);
    }

    public boolean remove(Object o) {
        int i = indexOf(o);
        boolean rv = delegate.remove(o);
        if (i >= 0) {
            fireIntervalRemoved(this, i, i);
        }
        return rv;
    }

    public boolean add(E e) {
        int i = delegate.size();
        boolean added = delegate.add(e);
        if (added) fireIntervalAdded(this, i, i);
        return added;
    }

    public E get(int i) {
        return delegate.get(i);
    }

    public  T[] toArray(T[] ts) {
        return delegate.toArray(ts);
    }

    public Object[] toArray() {
        return delegate.toArray();
    }

    public void removeRange(int fromIndex, int toIndex) {
        if (fromIndex > toIndex) {
            throw new IllegalArgumentException("fromIndex must be <= toIndex");
        }
        for (int i = toIndex; i >= fromIndex; i--) {
            delegate.remove(i);
        }
        fireIntervalRemoved(this, fromIndex, toIndex);
    }
}