private boolean isNative;

            this.isNative = isNative;

         * Indicates whether the method was determined as native by the parser.

         * @return 

         */

        public boolean isNative() {

            return isNative;

        }

        /**

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2014 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 *

 * Contributor(s):

 *

 * Portions Copyrighted 2014 Sun Microsystems, Inc.

 */

package org.netbeans.api.debugger;

import java.beans.Customizer;

import java.beans.PropertyChangeEvent;

import java.beans.PropertyChangeListener;

import java.util.ArrayList;

import java.util.Collections;

import java.util.HashMap;

import java.util.HashSet;

import java.util.List;

import java.util.Map;

import java.util.Set;

import java.util.concurrent.CopyOnWriteArraySet;

/**

 * Bridge between sessions.

 * 

 * @author Martin Entlicher

 */

public final class SessionBridge {

    private static SessionBridge instance;

    private final Map<String, Set<SessionChanger>> sessionChangers = new HashMap<String, Set<SessionChanger>>();

    private final List<SessionChanger> lookupSessionChangers;

    private SessionBridge() {

        Lookup lookup = new Lookup.MetaInf(null);

        final List<? extends SessionChanger> scList = lookup.lookup(null, SessionChanger.class);

        ((Customizer) scList).addPropertyChangeListener(new PropertyChangeListener() {

            @Override

            public void propertyChange(PropertyChangeEvent evt) {

                for (SessionChanger sc : lookupSessionChangers) {

                    removeSessionChangerListener(sc);

                }

                lookupSessionChangers.clear();

                for (SessionChanger sc : scList) {

                    lookupSessionChangers.add(sc);

                    addSessionChangerListener(sc);

                }

            }

        });

        lookupSessionChangers = new ArrayList<SessionChanger>();

        for (SessionChanger sc : scList) {

            lookupSessionChangers.add(sc);

            addSessionChangerListener(sc);

        }

    }

    /**

     * Get the default instance of SessionBridge.

     * @return the default instance

     */

    public static synchronized SessionBridge getDefault() {

        if (instance == null) {

            instance = new SessionBridge();

        }

        return instance;

    }

    /**

     * Suggest a session change to perform a particular action.

     * @param origin The original session suggesting the session change

     * @param action An action - a constant from ActionsManager.Action_*

     * @param properties Properties describing the current state of the current session before the given action.

     *                   The actual properties are specific for the particular session type.

     * @return <code>true</code> when the session is changed and another session

     *         decided to perform the given action. The call-back will be called later on.<br/>

     *         <code>false</code> when no other session would like to perform this action.

     */

    public boolean suggestChange(Session origin, String action, Map<Object, Object> properties) {

        Set<SessionChanger> scs;

        synchronized (sessionChangers) {

            scs = sessionChangers.get(action);

        }

        if (scs != null) {

            for (SessionChanger sc : scs) {

                Session newSession = sc.changeSuggested(origin, action, properties);

                if (newSession != null) {

                    if (DebuggerManager.getDebuggerManager().getCurrentSession() == origin) {

                        DebuggerManager.getDebuggerManager().setCurrentSession(newSession);

                    }

                    return true;

                }

            }

        }

        return false;

    }

    private void addSessionChangerListener(SessionChanger sc) {

        Set<String> actions = sc.getActions();

        synchronized (sessionChangers) {

            for (String action : actions) {

                Set<SessionChanger> scs = sessionChangers.get(action);

                if (scs == null) {

                    sessionChangers.put(action, Collections.singleton(sc));

                } else {

                    if (scs.size() == 1) {

                        SessionChanger old = scs.iterator().next();

                        scs = new CopyOnWriteArraySet<SessionChanger>();

                        scs.add(old);

                    }

                    scs.add(sc);

                }

            }

        }

    }

    private void removeSessionChangerListener(SessionChanger sc) {

        Set<String> actions = sc.getActions();

        synchronized (sessionChangers) {

            for (String action : actions) {

                Set<SessionChanger> scs = sessionChangers.get(action);

                if (scs == null) {

                    continue;

                }

                if (scs.size() == 1) {

                    SessionChanger old = scs.iterator().next();

                    if (sc.equals(old)) {

                        sessionChangers.remove(action);

                    }

                } else {

                    scs.remove(sc);

                }

            }

        }

    }

    public static interface SessionChanger {

        Set<String> getActions();

        Session changeSuggested(Session origin, String action, Map<Object, Object> properties);

    }

}