// purpose: behave like an instant messenger

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

public class XIMU implements ActionListener {

	public static void main( String[] args ) {
		XIMU im = new XIMU();
	}

	IM      im;
	String  buddy;
	TextBox incoming;
	TextBox outgoing;

	public static final Color cream = new Color( 255, 255, 220 );

	public XIMU() {
		
		JFrame window = Window.make( "XIMU", 475, 450, cream, false, false );

		this.im = null;
		this.buddy = null;

		this.incoming = new TextBox( "Incoming" );
		this.incoming.addTo( window );

		this.outgoing = new TextBox( "Outgoing" );
		this.outgoing.addTo( window );

		this.makeButtons( window );

		window.setVisible( true );
	}

	public void makeButtons( JFrame w ) {
		JButton buddy    = new JButton( "Buddy" );
		JButton login    = new JButton( "Login" );
		JButton send     = new JButton( "Send" );
		JButton receive  = new JButton( "Receive" );
		JButton logout   = new JButton( "Logout" );

		buddy.addActionListener( this );
		login.addActionListener( this );
		send.addActionListener( this );
		receive.addActionListener( this );
		logout.addActionListener( this );

		w.add( buddy );
		w.add( login );
		w.add( send );
		w.add( receive );
		w.add( logout );
	}

	public void actionPerformed( ActionEvent e ) {
		JButton button = (JButton) e.getSource();
		String name = button.getText();

		if ( name.equals( "Login" ) ) {
			String user = JOptionPane.showInputDialog(
									null, "Login", "",
									JOptionPane.QUESTION_MESSAGE );
			if ( user != null ) {
				if ( this.im != null ) {
					this.im.logout();
				}
				this.im = new IM( user );
			}
		}
		else if ( name.equals( "Buddy" ) ) {
			if ( this.im != null ) {
				ArrayList<String> list = this.im.whoseLoggedOn();
				Object[] array = list.toArray();
				this.buddy  = (String) JOptionPane.showInputDialog(
									null, "Friend", "",
									JOptionPane.QUESTION_MESSAGE,
									null,
									array,
									array[0] );
			}
		}
		else if ( name.equals( "Receive" ) ) {
			if ( ( this.im != null ) && ( this.buddy != null ) ) {
				String message = this.im.getMessage( this.buddy );
				this.incoming.setText( message );
			}
		}
		else if ( name.equals( "Send" ) ) {
			if ( ( this.im != null ) && ( this.buddy != null ) ) {
				String message = this.outgoing.getText();
				im.sendMessage( this.buddy, message );
			}
		}
		else if ( name.equals( "Logout" ) ) {
			if ( this.im != null ) {
				this.im.logout();
				System.exit( 1 );
			}
		}
	}
}