WbClientImpl.java

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// file: WbClientImpl.java by pmateti@wright.edu

package WhiteBoard;

import java.io.*;
import java.util.*;
import java.rmi.*;
import java.awt.Color;

public class WbClientImpl
    extends java.rmi.server.UnicastRemoteObject
    implements WbClient {

    private WbServer wbServer;
    private String thisMcnm, myBoardNm, myURL, myServerURL;
    private Color myColor;
    private LinesFrame myLinesFrame;

    // create our lines frame process, which will do recvDisplayObj()
    private void makeMyLinesFrame(String [] args) throws Exception {
    Invoke.javaVM
        ('L', args[1]  + " " + args[2] + " " + thisMcnm + " " + args[0]);
    }

    public WbClientImpl(String [] args) throws Exception {
    // args = [clientId, brdNm, displayMcnm, wbserverURL, color]
    super();

    myBoardNm = args[1];
    myURL = Invoke.makeURL('C', args[0]);
    Naming.rebind(myURL, this);
    Invoke.myPrint("WbClientImpl", "did Naming.rebind " +  myURL);

    thisMcnm = java.net.InetAddress.getLocalHost().getHostName();
    makeMyLinesFrame(args);
    myServerURL = args[3];
    wbServer = (WbServer) Invoke.lookup(myServerURL);
    myColor = new Color(Integer.parseInt(args[4], 16));
    Invoke.myPrint("WbClient waiting for", "recvDisplayObj");
    // addClient() occurs in recvDisplayObj()
    } 

    // this comes from wbServer
    public void updateBoard(LineCoords ln)  throws java.rmi.RemoteException {
    myLinesFrame.recvOneLine(ln);
    }
        
    // the rest come from our LinesFrame

    public void sendAllLines()  throws java.rmi.RemoteException {
    wbServer.sendAllLines(this, myBoardNm);
    }

    public void sendLine(LineCoords ln) {
    ln.c = myColor;
    try {wbServer.addLine(ln, myBoardNm);}
    catch (Exception e) {e.printStackTrace();}
    }

    public void recvDisplayObj(LinesFrame s) {
    Invoke.myPrint("WbClient waiting Ended", "" + s);
    myLinesFrame = s;
    try {wbServer.addClient(this, myBoardNm);}
    catch (Exception e) {e.printStackTrace();}
    }

    public void pleaseDie()  throws java.rmi.RemoteException {
    try {
        wbServer.delClient(this, myBoardNm);
        Naming.unbind(myURL);
    } catch (Exception e) {e.printStackTrace();}
    Invoke.myPrint("WbClient ", myURL + " exits");
    System.exit(0);
    }

    public static void main(String args[]) {
    try {WbClientImpl me = new WbClientImpl(args);}
    catch (Exception e) {e.printStackTrace();}
    }
}

// -eof-