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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;

import javafx.scene.Node;
import javafx.scene.Parent;

/**
 * This interface serves as an algorithm to retrieve Scene-graph structure.
 */
public interface MXNodeAlgorithm {

    /**
     * Method for processing leaf nodes.
     *
     * @param node node to be processed
     * @param ctx current context
     * @return algorithm specific result for the node
     */
    Object processLeafNode(Node node, MXNodeAlgorithmContext ctx);

    /**
     * Method for processing container nodes ({@link Parent}, {@link javafx.scene.Group}, etc.).
     *
     * @param parent container node to be processed
     * @param ctx current context
     * @return algorithm specific result for the container node
     */
    Object processContainerNode(Parent parent, MXNodeAlgorithmContext ctx);

}