Пример #1
0
 /**
  * Set Frame's title
  *
  * @param title : frame's title
  */
 void setTitle(String title) {
   String tmp = "";
   if (noChannel) {
     mainFrame.setTitle("JWhiteBoard");
     return;
   }
   if (title != null) {
     mainFrame.setTitle(title);
   } else {
     if (channel.getAddress() != null) tmp += channel.getAddress();
     tmp += " (" + memberSize + ")";
     mainFrame.setTitle(tmp);
   }
 }
Пример #2
0
  /** Execute when new member join or leave Group */
  public void viewAccepted(View v) {
    memberSize = v.size();
    if (mainFrame != null) setTitle();
    members.clear();
    members.addAll(v.getMembers());

    if (v instanceof MergeView) {
      System.out.println("** " + v);

      // This is a simple merge function, which fetches the state from the coordinator
      // on a merge and overwrites all of its own state
      if (useState && !members.isEmpty()) {
        Address coord = members.get(0);
        Address local_addr = channel.getAddress();
        if (local_addr != null && !local_addr.equals(coord)) {
          try {

            // make a copy of our state first
            Map<Point, Color> copy = null;
            if (send_own_state_on_merge) {
              synchronized (drawPanel.state) {
                copy = new LinkedHashMap<Point, Color>(drawPanel.state);
              }
            }
            System.out.println("fetching state from " + coord);
            channel.getState(coord, 5000);
            if (copy != null)
              sendOwnState(copy); // multicast my own state so everybody else has it too
          } catch (Exception e) {
            e.printStackTrace();
          }
        }
      }
    } else System.out.println("** View=" + v);
  }
Пример #3
0
  /** When receive a message, analyze message content and then execute the command: Draw or Clear */
  public void receive(Message msg) {
    byte[] buf = msg.getRawBuffer();
    if (buf == null) {
      System.err.println(
          "["
              + channel.getAddress()
              + "] received null buffer from "
              + msg.getSrc()
              + ", headers: "
              + msg.printHeaders());
      return;
    }

    try {
      DrawCommand comm =
          (DrawCommand)
              Util.streamableFromByteBuffer(
                  DrawCommand.class, buf, msg.getOffset(), msg.getLength());
      switch (comm.mode) {
        case DrawCommand.DRAW:
          if (drawPanel != null) drawPanel.drawPoint(comm);
          break;
        case DrawCommand.CLEAR:
          clearPanel();
        default:
          System.err.println("***** received invalid draw command " + comm.mode);
          break;
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
Пример #4
0
 public void connect() {
   try {
     channel.connect("TOTAL_TOKEN_DEMO_GROUP");
   } catch (ChannelException e) {
     e.printStackTrace();
   }
   receiverThread = new ReceiverThread();
   receiverThread.start();
   Address a = channel.getAddress();
   if (a != null) setTitle(a.toString());
   else setTitle("Not connected");
   control.connected();
 }