source: java-rpg-portal/LostHavenPortal.java

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;

/*
 * This is the main class in the portal project and it creates the gui and starts the thread that handles server communication.
 */

public class LostHavenPortal extends JFrame {
        private static final long serialVersionUID = 1L;
        
        public HashMap<String, Player> registered;
        public PriorityQueue<String> orderedReg;
        public PriorityQueue<String> orderedOnline;
        
        public JLabel lblConnectionStatus;
        public JLabel lblServerStatus;
        private JButton btnConnect;
        private JButton btnDisconnect;
        private JButton btnStart;
        private JButton btnStop;
        private JList lstRegistered;
        private JList lstOnline;
        private PortalThread thread;
        
        public LostHavenPortal() {
                registered = new HashMap<String, Player>();
                orderedReg = new PriorityQueue<String>(11, new PlayerComparator());
                orderedOnline = new PriorityQueue<String>(11, new PlayerComparator());
                
                MyWindowListener wndListener = new MyWindowListener();
                MyButtonListener btnListener = new MyButtonListener();
                
        addWindowListener(wndListener);
        setLayout(new FlowLayout());
        
        lblConnectionStatus = new JLabel("disconnected");
        lblServerStatus = new JLabel("not available");
        
        btnConnect = new JButton("connect");
        btnConnect.addActionListener(btnListener);
        btnDisconnect = new JButton("disconnect");
        btnDisconnect.addActionListener(btnListener);
        btnStart = new JButton("start");
        btnStart.addActionListener(btnListener);
        btnStop = new JButton("stop");
        btnStop.addActionListener(btnListener);
        
        lstRegistered = new JList();
        lstOnline = new JList();
        
        add(lblConnectionStatus);
        add(lblServerStatus);
        add(btnConnect);
        add(btnDisconnect);
        add(btnStart);
        add(btnStop);
        add(lstRegistered);
        add(lstOnline);
        
                setSize(600, 400);
                setVisible(true);
        }
        
        public void addRegList(String str, Player player) {
                registered.put(str, player);
                orderedReg.add(str);
                updateGui();
        }
        
        public void addOnlineList(String str) {
                orderedOnline.add(str);
                updateGui();
        }
        
        public void updateGui() {
                SwingUtilities.invokeLater(new Runnable() {
                        public void run() {
                                lstRegistered.setListData(orderedReg.toArray());
                                lstOnline.setListData(orderedOnline.toArray());
                        }
                });
        }
        
        private void start() {
                if(!Connection.isConnected(thread)) {
                        //thread = new PortalThread("64.9.205.76", 5829, this);
                        //thread = new PortalThread("69.138.160.41", 5829, this);
                        thread = new PortalThread("127.0.0.1", 5829, this);
                        thread.start();
                }else {
                        JOptionPane.showMessageDialog(this, "Connection has already been established.");
                }
        }
        
        private void stop() {
                if(Connection.isConnected(thread)) {
                        thread.closeConnection();
                }else {
                        JOptionPane.showMessageDialog(this, "Connection has not yet been established.");
                }
        }
        
        private class MyWindowListener extends WindowAdapter {
                public void windowClosing(WindowEvent e) {
                        if(thread != null)
                                thread.closeConnection();
                        System.exit(0);
            }
        }
        
        private class MyButtonListener implements ActionListener {
                public void actionPerformed(ActionEvent e) {
                        String str = ((JButton)e.getSource()).getText();
                
                        if(str.equals("connect")){
                                start();
                        }else if(str.equals("disconnect")){
                                stop();
                        }else if(str.equals("start")){
                                if(Connection.isConnected(thread))
                                        thread.sendMessage(MessageType.StartServer, "");
                        }else if(str.equals("stop")){
                                if(Connection.isConnected(thread))
                                        thread.sendMessage(MessageType.StopServer, "");
                        }
            }
        }
        
        public static void main(String[] args) {
        new LostHavenPortal();
    }
        
        private class PlayerComparator implements Comparator<String> {
                public int compare(String str1, String str2) {
                        return registered.get(str1).getId() - registered.get(str2).getId();
                }
        }
}