peerpingaction.java

myjxta是用jxta开发的一个p2p通讯软件 有聊天 文件共享 视频3大功能 界面采用swing

/*
*  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 disclaimer 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: PeerPingAction.java,v 1.22 2007/06/10 21:15:13 nano Exp $
*/

package net.jxta.myjxta.ui.action;

import net.jxta.logging.Logging;
import net.jxta.myjxta.MyJXTA;
import net.jxta.myjxta.View;
import net.jxta.myjxta.plugin.ISelectableNode;
import net.jxta.myjxta.presence.PresenceController;
import net.jxta.myjxta.util.Group;
import net.jxta.myjxta.util.objectmodel.JxtaNode;
import net.jxta.myjxta.util.objectmodel.PeerNode;

import java.awt.event.ActionEvent;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * @author james todd [gonzo at jxta dot org]
 * @version $Id: PeerPingAction.java,v 1.22 2007/06/10 21:15:13 nano Exp $
 */

public class PeerPingAction
        extends PeerStatusAction {

    


    private static final Logger LOG = Logger.getLogger(PeerPingAction.class.getName());

    private View view = null;

    public PeerPingAction(String name, View view) {
        super(name, view);

        this.view = view;

        if (Logging.SHOW_FINE && LOG.isLoggable(Level.FINE)) {
            LOG.fine("PeerStatusAction instantiated");
        }
    }

    public boolean isEnabled() {
        ISelectableNode[] selectedNodes = getControl().getPluginContainer().getSelectedNodes();
        if (selectedNodes.length == 0) return false;
        for (ISelectableNode selectedNode : selectedNodes) {
            if (!(selectedNode.getJxtaNode() != null)) {
                return false;
            }
        }
        return true;
    }

    public void actionPerformed(ActionEvent ae) {
        PeerNode[] nodes = getNodes();
        if (nodes.length < 1) {
            return;
        }
        PeerNode firstPeerNode = nodes[0];

        final Group g = firstPeerNode.getParent().getGroup();

        for (final PeerNode p : nodes) {
            final Thread pingThread = new Thread(new Runnable() {
                public void run() {

                    PresenceController.challengePeerNode(getControl(), g, p);
                }
            }, getClass().getName() + ":getConnection");
            pingThread.setDaemon(true);
            pingThread.start();
        }
    }

    protected PeerNode[] getNodes() {
        ISelectableNode[] selection = getControl().getPluginContainer().getSelectedNodes();
        ArrayList<JxtaNode> result = new ArrayList<JxtaNode>();
        for (ISelectableNode iSelectableNode : selection) {
            JxtaNode jxtaNode = iSelectableNode.getJxtaNode();
            if (jxtaNode instanceof PeerNode) {
                result.add(jxtaNode);
            }
        }
        return result.toArray(new PeerNode[0]);

    }

    private MyJXTA getControl() {
        return this.view.getControl();
    }

}