dialogmanager.java

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/*
 *  Copyright (c) 2001 Sun Microsystems, Inc.  All rights
 *  reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *  notice, this list of conditions and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following discalimer in
 *  the documentation and/or other materials provided with the
 *  distribution.
 *
 *  3. The end-user documentation included with the redistribution,
 *  if any, must include the following acknowledgment:
 *  "This product includes software developed by the
 *  Sun Microsystems, Inc. for Project JXTA."
 *  Alternately, this acknowledgment may appear in the software itself,
 *  if and wherever such third-party acknowledgments normally appear.
 *
 *  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
 *  must not be used to endorse or promote products derived from this
 *  software without prior written permission. For written
 *  permission, please contact Project JXTA at http://www.jxta.org.
 *
 *  5. Products derived from this software may not be called "JXTA",
 *  nor may "JXTA" appear in their name, without prior written
 *  permission of Sun.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 *  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 *  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 *  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 *  SUCH DAMAGE.
 *  ====================================================================
 *
 *  This software consists of voluntary contributions made by many
 *  individuals on behalf of Project JXTA.  For more
 *  information on Project JXTA, please see
 *  <http://www.jxta.org/>.
 *
 *  This license is based on the BSD license adopted by the Apache Foundation.
 *
 *  $Id: DialogManager.java,v 1.29 2007/06/10 21:15:10 nano Exp $
 */

package net.jxta.myjxta.dialog;

import net.jxta.myjxta.MyJXTA;
import net.jxta.myjxta.misc.beam.BeamDialog;
import net.jxta.myjxta.util.Group;
import net.jxta.peergroup.PeerGroup;
import net.jxta.pipe.PipeService;
import net.jxta.protocol.PipeAdvertisement;
import net.jxta.util.JxtaBiDiPipe;

import java.util.*;

/**
 * @author james todd [gonzo at jxta dot org]
 * @version $Id: DialogManager.java,v 1.29 2007/06/10 21:15:10 nano Exp $
 * @modified 2005-03-27 jamoore add vojxtaDialog to dialog types
 * @modified 2005-04-24 jamoore add vijxtaDialog to dialog types
 */

public abstract class DialogManager {

    /**
     * The Map that holds the available managers of DialogManager
     * keyed by type. This ensures that only one instance of each
     * DialogManager type is creaed application wide
     */
    private static Map<Group, List<DialogManager>> managers = null;
    private static Map<Group, List<Dialog>> dialogs = null;
    private static Map<Group, List<CommandExecutor>> commandListeners = null;
    private static final Map<String, IDialogProvider> dialogProvider = new HashMap<String, IDialogProvider>();

    private String name = null;
    private String type = null;


    /**
     * Return the instance of the DialogManager to use, given a
     * type.
     *
     * @param type the type of DialogManager to return
     * @return the desired type of DialogManager
     */
    public static synchronized DialogManager getInstance(Group g, String name,
                                                         String type) {
        DialogManager dm = null;

        name = name != null ? name.trim() : null;
        type = type != null ? type.trim() : null;

        if (g != null &&
                name.length() > 0 &&
                type.length() > 0) {
            DialogManager tdm = null;

            if (PipeService.PropagateType.equals(type)) {
                tdm = new PropogateDialogManager(name, type);
            } else if (PipeService.UnicastType.equals(type)) {
                tdm = new UnicastDialogManager(name, type);
            } else if (PipeService.UnicastSecureType.equals(type)) {
                tdm = new UnicastSecureDialogManager(name, type);
            }

            if (managers != null) {
                List<DialogManager> ml = managers.get(g);
                int i = ml != null ? ml.indexOf(tdm) : -1;

                dm = i > -1 ? ml.get(i) : null;
            }

            if (dm == null) {
                dm = tdm;

                if (managers == null) {
                    managers = new HashMap<Group, List<DialogManager>>();
                }

                List<DialogManager> ml = managers.get(g);

                if (ml != null) {
                    if (!ml.contains(dm)) {
                        ml.add(dm);
                    }
                } else {
                    ml = new ArrayList<DialogManager>();

                    ml.add(dm);

                    managers.put(g, ml);
                }
            }
        }

        return dm;
    }

    public static Dialog getDialog(Class<BeamDialog> c, Group g, MyJXTA myjxta) {
        Dialog d = null;

        if (c != null &&
                Dialog.class.isAssignableFrom(c) &&
                g != null &&
                myjxta != null) {
            Dialog td = null;

            if (c == BeamDialog.class) {
                td = new BeamDialog(g, myjxta);
            }

            d = getDialog(g, td);
        }

        return d;
    }

    /**
     * Returns the Dialog associated with the specified pipe.
     *
     * @modified 2005-04-24 jamoore add vijxtaDialog to dialog types
     */
    public static Dialog getDialog(Class c, Group g, JxtaBiDiPipe pipe,
                                   MyJXTA myjxta) {
        Dialog d = null;

        if (c != null &&
                Dialog.class.isAssignableFrom(c) &&
                g != null &&
                pipe != null &&
                myjxta != null) {
            Dialog td = null;

            if (c == OneToOneCommandDialog.class) {
                td = new OneToOneCommandDialog(g, pipe, myjxta);
            } else {
                DialogManager.IDialogProvider provider = dialogProvider.get(c.getName());
                if (provider != null) {
                    td = provider.createDialog(g, pipe, myjxta);
                }

//            if (c.getName() == TicTacToeDialog.class.getName()) {
//                td = new TicTacToeDialog(g, pipe, myjxta);
            }

            d = getDialog(g, td);
        }

        return d;
    }


    /**
     * Returns the Dialog associated with the specified pipe advertisement.
     *
     * @modified 2005-04-24 jamoore add vijxtaDialog to dialog types
     */
    public static Dialog getDialog(Class c, Group g, PipeAdvertisement pa,
                                   MyJXTA myjxta) {
        Dialog d = null;

        if (c != null &&
                Dialog.class.isAssignableFrom(c) &&
                g != null &&
                pa != null &&
                myjxta != null) {
            Dialog td = null;

            if (c == OneToOneCommandDialog.class) {
                td = new OneToOneCommandDialog(g, pa, myjxta);
            } else {
                //classloader prevents true identity comparison
                DialogManager.IDialogProvider provider = dialogProvider.get(c.getName());
                if (provider != null) {
                    td = provider.createDialog(g, pa, myjxta);
                }
            }
            d = getDialog(g, td);
        }

        return d;
    }

    public static void installCommandListener(Class<OneToOneCommandDialog> c, Group g, JxtaBiDiPipe pipe,
                                              MyJXTA myjxta) {
        getCommandDialog(g, (OneToOneCommandDialog) getDialog(c, g, pipe, myjxta));
    }

    public static OneToOneCommandDialog getCommandDialog(Class<OneToOneCommandDialog> c, Group g, PipeAdvertisement pa,
                                                         MyJXTA myjxta) {
        return getCommandDialog(g, (OneToOneCommandDialog) getDialog(c, g, pa, myjxta));
    }