ajout d'un panel avec la liste des utilisateurs connectés dans la fenêtre principale

src/chat/ClientWindow.java

@@ -19,6 +19,7 @@ public class ClientWindow implements ActionListener {
 	
 	JPanel chatPanel;
 	JTextArea chatText;
+	JTextArea knownUsersPanel;
 	JScrollPane textScroll;
 	
 	JPanel sendPanel;
@@ -36,13 +37,14 @@ public class ClientWindow implements ActionListener {
         chatWindow  = new JFrame("Système de clavardage 2.0.1");
 		chatPanel = new JPanel(new BorderLayout(2, 2));
         chatText = new JTextArea(1,1);
+        knownUsersPanel = new JTextArea(1,1);
 		textScroll = new JScrollPane(chatText);
 		
 		sendPanel = new JPanel(new BorderLayout(1, 2));
 		messageField = new JTextField();
 		sendButton = new JButton("Envoyer");
 		
-		network = new NetworkClient(chatText);
+		network = new NetworkClient(chatText, knownUsersPanel);
         
         while(!connected && username != null)
         {
@@ -52,11 +54,11 @@ public class ClientWindow implements ActionListener {
                     JOptionPane.PLAIN_MESSAGE);
         	
         	connected = network.connect(username);
-        	if(!connected)
+        	if(!connected && username != null)
         	{
         		if(username.equals(""))
         			JOptionPane.showMessageDialog(chatWindow, "Please enter a username", "Error", JOptionPane.ERROR_MESSAGE);
-        		else if (username != null)
+        		else
         			JOptionPane.showMessageDialog(chatWindow, "This username is already taken", "Error", JOptionPane.ERROR_MESSAGE);
         	}
         }
@@ -80,7 +82,11 @@ public class ClientWindow implements ActionListener {
             chatText.setLineWrap(true);
             chatText.setEditable(false);
             
+            knownUsersPanel.setLineWrap(false);
+            knownUsersPanel.setEditable(false);
+            
             chatPanel.add(textScroll);
+            chatPanel.add(knownUsersPanel, BorderLayout.EAST);
             chatPanel.add(sendPanel, BorderLayout.SOUTH);
             
             chatWindow.getContentPane().add(chatPanel, BorderLayout.CENTER);

src/chat/NetworkClient.java

@@ -54,12 +54,14 @@ class ReceiveThread extends Thread {
 	
 	int port;
 	JTextArea displayArea;
+	JTextArea knownUsersPanel;
 	List<User> known_users;
 
-	ReceiveThread(int in_port, JTextArea in_displayArea, List<User> in_known_users)
+	ReceiveThread(int in_port, JTextArea in_displayArea, List<User> in_known_users, JTextArea in_knownUsersPanel)
 	{
 		port = in_port;
 		displayArea = in_displayArea;
+		knownUsersPanel = in_knownUsersPanel;
 		known_users = in_known_users;
 	}
 	public void run()
@@ -88,6 +90,12 @@ class ReceiveThread extends Thread {
 			            	if (known_users.get(i).getName().equals(message.getAuthor()))
 			            	known_users.remove(i);
 			            }
+			            knownUsersPanel.setText("");
+			            knownUsersPanel.append("Online:\n");
+			            for(User a:known_users)
+			            {
+			            	knownUsersPanel.append(a.getName() + "\n");
+			            }
 		        	}
 		            displayArea.setCaretPosition(displayArea.getDocument().getLength());
 		            link.close();
@@ -108,12 +116,14 @@ class ReceiveThread extends Thread {
 
 class ConnectionListenerThread extends Thread {
 	JTextArea displayArea;
+	JTextArea knownUsersPanel;
 	List<User> known_users;
 	
-	ConnectionListenerThread(List<User> in_known_users, JTextArea in_displayArea)
+	ConnectionListenerThread(List<User> in_known_users, JTextArea in_displayArea, JTextArea in_knownUsersPanel)
 	{
 		known_users = in_known_users;
 		displayArea = in_displayArea;
+		knownUsersPanel = in_knownUsersPanel;
 	}
 	public void run()
 	{
@@ -168,8 +178,17 @@ class ConnectionListenerThread extends Thread {
 					if(accepted)
 					{
 						known_users.add(new User(username, clientAddress.getHostAddress()));
+						
+						Collections.sort(known_users);
+						
 			            displayArea.append(username + " has joined the chat.\n");
 			            displayArea.setCaretPosition(displayArea.getDocument().getLength());
+			            knownUsersPanel.setText("");
+			            knownUsersPanel.append("Online:\n");
+			            for(User a:known_users)
+			            {
+			            	knownUsersPanel.append(a.getName() + "\n");
+			            }
 					}	
 					else
 					{
@@ -191,6 +210,7 @@ public class NetworkClient {
 	 private User user;
 	 private List<User> known_users;
 	 private JTextArea chatText;
+	 private JTextArea knownUsersPanel;
 		
 	static 	String getLocalIP() {
 		String ip = "";
@@ -205,10 +225,11 @@ public class NetworkClient {
 		return ip;
 	}
 	
-	NetworkClient(JTextArea in_chatText)
+	NetworkClient(JTextArea in_chatText, JTextArea in_knownUsersPanel)
 	{
 		user = new User("", "");
 		chatText = in_chatText;
+		knownUsersPanel = in_knownUsersPanel;
 		known_users = new ArrayList<User>();
 	}
 	
@@ -297,9 +318,16 @@ public class NetworkClient {
     	  chatText.append(username + " has joined the chat.\n");
           chatText.setCaretPosition(chatText.getDocument().getLength());
           
-          ReceiveThread t2 = new ReceiveThread(1237, chatText, known_users);
+          knownUsersPanel.setText("");
+          knownUsersPanel.append(" Online :\n");
+          for(User a:known_users)
+          {
+          	knownUsersPanel.append(" " + a.getName() + "  \n");
+          }
           
-          ConnectionListenerThread t3 = new ConnectionListenerThread(known_users, chatText);
+          ReceiveThread t2 = new ReceiveThread(1237, chatText, known_users, knownUsersPanel);
+			
+          ConnectionListenerThread t3 = new ConnectionListenerThread(known_users, chatText, knownUsersPanel);
           t2.start();
           t3.start();
       }

src/chat/User.java

@@ -3,7 +3,7 @@ package chat;
 import java.io.*; 
 import java.util.*; 
 
-public class User implements Serializable{
+public class User implements Comparable<User>, Serializable{
 
 	private String name;
 	private String address;
@@ -37,4 +37,8 @@ public class User implements Serializable{
 		return (b.getName() == name);
 	}
 	
+	public int compareTo (User otherUser)
+	{
+		return name.compareTo(otherUser.getName());
+	}
 }