initial commit

.classpath

+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

.project

+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>LAB10</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

.settings/org.eclipse.jdt.core.prefs

+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.8

src/ChatArea.java

+import javax.swing.JFrame;
+import javax.swing.JTextArea;
+
+public class ChatArea extends JTextArea {
+	private static final int ROWS = 10, COLUMNS = 30;
+	private String name;
+	private String text;
+
+	public ChatArea() {
+		super(ROWS, COLUMNS);
+		this.setEditable(false);
+		this.setLineWrap(true);
+		this.setVisible(true);
+
+	}
+
+	public void addMessage(String name, String text) {
+		setText(name + "\n    "+text);
+		
+
+	}
+
+
+}

src/ChatRoomGUI.java

+import java.awt.BorderLayout;
+
+import javax.swing.*;
+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 UsernameFrame username = new UsernameFrame();
+	private ChatArea chatBox;
+	private MessageArea msg;
+	private ParticipantArea participant;
+
+	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);
+		this.setVisible(true);
+		chatBox = new ChatArea();
+		this.add(new JScrollPane(chatBox), BorderLayout.CENTER);
+		msg = new MessageArea();
+		this.add(new JScrollPane(msg), BorderLayout.PAGE_END);
+		participant = new ParticipantArea();
+		this.add(new JScrollPane(participant), BorderLayout.WEST);
+	}
+
+	public void addNewMessage(String name , String text) {
+		chatBox.addMessage(name, text);
+	}
+
+	public void addNewParticipant(String name) {
+		participant.addOnlinePerson(name);
+	}
+
+	public void removeParticipant(String name) {
+		participant.removeOnlinePerson(name);
+	}
+
+
+
+
+
+
+
+}
\ No newline at end of file

src/Main.java

+
+public class Main {
+
+	public static void main(String[] args) {
+		
+		ChatRoomGUI chatRoom = new ChatRoomGUI();
+		UsernameFrame username = new UsernameFrame();
+		chatRoom.addNewMessage("User 0", "Hello");
+		for(int i=0 ;i<10;i++) {
+			chatRoom.addNewParticipant("User "+ i);
+		}
+		chatRoom.removeParticipant("User 1");
+		
+
+	}
+
+}

src/MessageArea.java

+import java.awt.BorderLayout;
+import java.awt.Label;
+
+import javax.swing.JButton;
+import javax.swing.JPanel;
+import javax.swing.JTextField;
+
+
+public class MessageArea extends JPanel{
+	JTextField t;
+	JButton b;
+	public final static String TEXT = "send message:";
+
+	
+	public MessageArea() {
+		this.setLayout(new BorderLayout());
+		t = new JTextField();
+		this.add(t,BorderLayout.CENTER);
+		b = new JButton(TEXT);
+		add(b, BorderLayout.EAST);
+
+		this.setVisible(true);
+	}
+	
+}

src/ParticipantArea.java

+import java.awt.BorderLayout;
+import java.awt.Label;
+
+import javax.swing.DefaultListModel;
+import javax.swing.JList;
+import javax.swing.JPanel;
+
+public class ParticipantArea extends JPanel{
+	DefaultListModel<String> onlinelist;
+	public final static String TEXT = "online people:";
+	
+	public ParticipantArea() {
+		super();
+		this.setLayout(new BorderLayout());
+		Label l1 = new Label(TEXT);
+		this.add(l1,BorderLayout.PAGE_START );
+		onlinelist = new DefaultListModel<>();
+		JList <String> list = new JList<>(onlinelist);
+		list.setSize(50,50);
+		this.add(list, BorderLayout.WEST);
+		this.setVisible(true);
+		
+	}
+	public void addOnlinePerson(String username) {
+		onlinelist.addElement(username);
+	}
+	
+	public void removeOnlinePerson(String username) {
+		onlinelist.removeElement(username);
+	}
+}

src/UsernameFrame.java

+import javax.swing.*;
+
+import java.awt.*;
+public class UsernameFrame extends JFrame {
+	private static final String BTN_TXT = " Start Chatting ...";
+	private static final String LABEL_TEXT = " 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(LABEL_TEXT);
+		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);
+	}
+}
\ No newline at end of file