lab10

ChatArea.java

+package com.company;
+
+import javax.swing.*;
+
+public class ChatArea extends JTextArea {
+    private static final int ROWS = 10, COLUMNS = 30;
+    private String showingMessage;
+    DefaultListModel model = new DefaultListModel();
+    JList list = new JList(model);
+
+    public ChatArea() {
+    super(ROWS, COLUMNS);
+    this.setEditable(false);
+    this.setLineWrap(true);
+    showingMessage = new String("");
+    }
+
+    public void Show (){
+        this.append(showingMessage);
+        this.setEditable(false);
+    }
+
+    public void addMessage (String username , String message){
+        showingMessage += username + " :\n" + message + "\n\n";
+        this.append(showingMessage);
+    }
+}
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ChatRoomGUI.java

+package com.company;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class ChatRoomGUI extends JFrame{
+    private final String WINDOWS_TITLE = "AUT Chat Room";
+    private final int WIDTH = 500, HEIGHT = 500;
+    private final int X = 100, Y = 100;
+    private ChatArea chatBox;
+    private MessageArea messageArea;
+    private ParticipantsArea participantsArea;
+
+    public ChatRoomGUI() {
+        super();
+        this.setTitle(WINDOWS_TITLE);
+        this.setLayout(new BorderLayout());
+        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        this.setSize(WIDTH, HEIGHT);
+        this.setLocation(X, Y);
+        chatBox = new ChatArea();
+        this.add(chatBox, BorderLayout.CENTER);
+        messageArea = new MessageArea();
+        messageArea.sendingMassage();
+        this.add(messageArea , BorderLayout.SOUTH);
+        participantsArea = new ParticipantsArea();
+        participantsArea.showOnlines();
+        this.add(participantsArea , BorderLayout.WEST);
+        this.setVisible(true);
+    }
+
+    public void addMessage(String userName , String message){
+        chatBox.addMessage(userName , message);
+    }
+
+    public void addNewParticipant(String userName){
+        participantsArea.addOnlineUser(userName);
+    }
+
+    public void removeParticipant(String userName){
+        participantsArea.removeOnlineUser(userName);
+    }
+
+    public ParticipantsArea getParticipantsArea(){
+        return participantsArea;
+    }
+
+}
+

Main.java

+package com.company;
+
+public class Main {
+
+    public static void main(String[] args) {
+
+       ChatRoomGUI chatRoomGUI = new ChatRoomGUI();
+       chatRoomGUI.addNewParticipant("Fatemeh");
+       chatRoomGUI.addNewParticipant("Zahra");
+       chatRoomGUI.removeParticipant("Fatemeh");
+       chatRoomGUI.addMessage("Zahra" , "Hi!");
+    }
+}

MessageArea.java

+package com.company;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class MessageArea extends JPanel {
+
+    public MessageArea(){
+        this.setLayout(new BorderLayout());
+    }
+
+    public void sendingMassage(){
+        this.setSize(300 , 50);
+        JButton bot = new JButton("send message");
+        this.add(new JScrollPane(bot) , BorderLayout.EAST);
+        JTextArea textArea = new JTextArea("");
+        textArea.setEditable(true);
+        this.add(textArea , BorderLayout.WEST);
+        this.setVisible(true);
+    }
+}

ParticipantsArea.java

+package com.company;
+
+import javax.swing.*;
+import java.awt.*;
+import java.util.ArrayList;
+
+public class ParticipantsArea extends JPanel {
+
+    DefaultListModel model = new DefaultListModel();
+    JList list = new JList(model);
+    public ParticipantsArea(){
+        this.setLayout(new BorderLayout());
+    }
+
+    public void showOnlines(){
+        JLabel lable = new JLabel("Online users :");
+        this.add(lable , BorderLayout.NORTH);
+        this.add(list , BorderLayout.CENTER);
+    }
+
+    public void addOnlineUser(String userName){
+        model.addElement(userName);
+    }
+
+    public void removeOnlineUser(String userName){
+        model.removeElement(userName);
+    }
+}

UsernameFrame.java

+package com.company;
+
+import javax.swing.*; import java.awt.*;
+
+public class UsernameFrame extends JFrame {
+    private static final String BTN_TXT = " Start Chatting ...";
+    private static final String LABEL_TXT = " Choose Your UserName  ";
+    private static final int WIDTH = 300, HEIGHT = 100;
+    JTextField textField;
+    JButton btn;
+
+    public UsernameFrame() throws HeadlessException {
+        super();
+        this.setLayout(new BorderLayout());
+        JLabel label = new JLabel("Choose Your UserName");
+        add(label, BorderLayout.PAGE_START);
+        textField = new JTextField();
+        add(textField, BorderLayout.CENTER);
+        btn = new JButton("LABEL_TEXT");
+        add(btn, BorderLayout.PAGE_END);
+        setSize(WIDTH, HEIGHT);
+        setVisible(true);
+    }
+}
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