SendDialog.java

package org.jgroups.demos.wb;

import org.jgroups.blocks.*;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;


public class SendDialog extends Dialog implements ActionListener {
    private final TextArea msg=new TextArea("");
    private final Font default_font=new Font("Helvetica", Font.PLAIN, 12);
    private RpcDispatcher disp=null;
    private Node dest=null;
    private String sender=null;


    public SendDialog(Frame parent, Node dest, String src, RpcDispatcher disp) {
        super(parent, "Send message to " + dest.lbl + " at " + dest.addr, true);

        Panel p1=new Panel(), p2=new Panel();
        Button send=new Button("Send"), send_all=new Button("Send to all");
        Button cancel=new Button("Cancel");

        this.disp=disp;
        this.dest=dest;
        sender=src;

        send.setFont(default_font);
        send_all.setFont(default_font);
        cancel.setFont(default_font);
        msg.setFont(default_font);

        p1.setLayout(new BorderLayout());
        p1.add(msg);

        p2.setLayout(new FlowLayout());
        send.addActionListener(this);
        send_all.addActionListener(this);
        cancel.addActionListener(this);
        p2.add(send);
        p2.add(send_all);
        p2.add(cancel);

        add("Center", p1);
        add("South", p2);

        setSize(300, 150);

        Point my_loc=parent.getLocation();
        my_loc.x+=50;
        my_loc.y+=150;
        setLocation(my_loc);
        setVisible(true);
    }


    public String getMessage() {
        String retval=msg.getText();
        return retval.length() > 0? retval : null;
    }


    public void actionPerformed(ActionEvent e) {
        String command=e.getActionCommand();
        String retval=msg.getText();

        if(retval == null || retval.length() < 1) {
            dispose();
            return;
        }

        try {
            MethodCall call=new MethodCall("displayMessage", new Object[]{sender,retval},
                                           new Class[]{String.class,String.class});
            if(command.equals("Send"))
                disp.callRemoteMethod(dest.addr, call, new RequestOptions(ResponseMode.GET_FIRST, 0));
            else if(command.equals("Send to all"))
                disp.callRemoteMethods(null, call, new RequestOptions(ResponseMode.GET_ALL, 0));
        }
        catch(Throwable ex) {
            System.err.println(ex);
        }

        dispose();
    }


}