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This is a backport of OpenJFX 8 to run on Java 7.
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/*
 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.javafx.collections;

import java.util.AbstractList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Comparator;

import javafx.beans.InvalidationListener;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.collections.transformation.FilteredList;
import javafx.collections.transformation.SortedList;
import javafx.util.Callback;

public class ImmutableObservableList extends AbstractList implements ObservableList {

    private final E[] elements;
    
    public ImmutableObservableList(E... elements) {
        this.elements = ((elements == null) || (elements.length == 0))?
                null : Arrays.copyOf(elements, elements.length);
    }

    @Override
    public void addListener(InvalidationListener listener) {
        // no-op
    }

    @Override
    public void removeListener(InvalidationListener listener) {
        // no-op
    }

    @Override
    public void addListener(ListChangeListener listener) {
        // no-op
    }

    @Override
    public void removeListener(ListChangeListener listener) {
        // no-op
    }

    @Override
    public boolean addAll(E... elements) {
        throw new UnsupportedOperationException();
    }

    @Override
    public boolean setAll(E... elements) {
        throw new UnsupportedOperationException();
    }

    @Override
    public boolean setAll(Collection col) {
        throw new UnsupportedOperationException();
    }

    @Override
    public boolean removeAll(E... elements) {
        throw new UnsupportedOperationException();
    }

    @Override
    public boolean retainAll(E... elements) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void remove(int from, int to) {
        throw new UnsupportedOperationException();
    }

    @Override
    public E get(int index) {
        if ((index < 0) || (index >= size())) {
            throw new IndexOutOfBoundsException();
        }
        return elements[index];
    }

    @Override
    public int size() {
        return (elements == null)? 0 : elements.length;
    }

    /**
     * Creates a {@link javafx.collections.transformation.FilteredList} wrapper of this list using
     * the specified predicate.
     * @param predicate the predicate to use
     * @return new {@code FilteredList}
     */
    public FilteredList filtered(Callback predicate) {
        return new FilteredList(this, predicate);
    }

    /**
     * Creates a {@link SortedList} wrapper of this list using
     * the specified comparator.
     * @param comparator the comparator to use or null for the natural order
     * @return new {@code SortedList}
     */
    public SortedList sorted(Comparator comparator) {
        return new SortedList(this, comparator);
    }

    /**
     * Creates a {@link SortedList} wrapper of this list with the natural
     * ordering.
     * @return new {@code SortedList}
     */
    public SortedList sorted() {
        return sorted(null);
    }

}