collabtool.java

JAVA网络编程技术内幕一书的源代码

/*
 * Java Network Programming, Second Edition
 * Merlin Hughes, Michael Shoffner, Derek Hamner
 * Manning Publications Company; ISBN 188477749X
 *
 * http://nitric.com/jnp/
 *
 * Copyright (c) 1997-1999 Merlin Hughes, Michael Shoffner, Derek Hamner;
 * all rights reserved; see license.txt for details.
 */

import java.io.*;
import java.awt.*;

public class CollabTool {
  private static int id = 0;
  
  protected Frame frame;
  protected Demultiplexer demultiplexer;
  
  public CollabTool (InputStream in, OutputStream out) {
    frame = new Frame ("Collaborative Tool " + (id ++));
    frame.setLayout (new GridLayout (2, 1));
 
    Whiteboard wb = new Whiteboard ();
    frame.add (wb);
    Chatboard cb = new Chatboard ();
    frame.add (cb);
    frame.pack ();
 
    MessageOutputStream messageOut = new MessageOutputStream (out);
    MessageInputStream messageIn = new MessageInputStream (in);
    cb.setMessageOutput (new MultiplexOutputStream (messageOut, "chat"));
    wb.setMessageOutput (new MultiplexOutputStream (messageOut, "wb"));
    demultiplexer = new Demultiplexer (messageIn);
    demultiplexer.register ("chat", cb.getMessageOutput ());
    demultiplexer.register ("wb", wb.getMessageOutput ());
  }

  public void start () {
    demultiplexer.start ();
    frame.setVisible (true);
  }

  public static void main (String[] args) throws IOException {
    PipedOutputStream out0 = new PipedOutputStream ();
    PipedInputStream in1 = new PipedInputStream (out0);
    PipedOutputStream out1 = new PipedOutputStream ();
    PipedInputStream in0 = new PipedInputStream (out1);
    CollabTool collabTool0 = new CollabTool (in0, out0);
    CollabTool collabTool1 = new CollabTool (in1, out1);
    collabTool0.start ();
    collabTool1.start ();
  }
}