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This is a backport of OpenJFX 8 to run on Java 7.

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/*
 * Copyright (c) 2010, 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.jmx;

/**
 * Context used together with {@link MXNodeAlgorithm} for obtaining the Scene-graph
 * structure.
 */
public class MXNodeAlgorithmContext {

    private int counter;

    /**
     * Creates new instance of the context with the node counter initialized to zero.
     */
    public MXNodeAlgorithmContext() {
        this(0);
    }

    /**
     * Creates new instance of the context with the node counter initialized
     * to initCounterValue.
     *
     * @param initCounterValue initial value for node identifiers
     */
    public MXNodeAlgorithmContext(int initCounterValue) {
        counter = initCounterValue;
    }

    /**
     * Returns next number identifier. Numbers returned by this method are used
     * as node's identifiers.
     *
     * @return the next identifier
     */
    public int getNextInt() {
        return ++counter;
    }

}