import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.net.*;
import java.io.*;

public class DogApplet extends Applet 
{

	public void init()
	{	super.init();

		setLayout(null);
		resize(544,409);
		setFont(new Font("Dialog", Font.PLAIN, 12));
		answer = new Button("Answer Server");
		answer.setBounds(173,195,106,22);
		add(answer);
		AnswerListener answerListener =  new AnswerListener() ;
		answer.addActionListener(answerListener);
		reset = new Button("Reset");
		reset.setBounds(406,371,60,23);
		add(reset);
		resetter = 	new ResetListener();
		reset.addActionListener(resetter);
		label1 = new Label("From Server");
		label1.setBounds(30,65,115,24);
		add(label1);
		label2 = new Label("Your Reply");
		label2.setBounds(29,157,103,25);
		add(label2);
		label3 = new Label("Server's Judgement");
		label3.setBounds(24,268,133,23);
		add(label3);
		label4 = new Label("Are you a dog? Answer the following question.");
		label4.setBounds(56,12,407,24);
		add(label4);
		fromServer = new TextField();
	//	fromServer.setEditable(false);
		fromServer.setBackground(Color.white);
		fromServer.setBounds(170,67,360,36);
		fromServer.setFont(new Font("Dialog", Font.PLAIN, 14));
		add(fromServer);
		fromServer.setEnabled(false);
		judgementFromServer = new TextField();
	//	judgementFromServer.setEditable(false);
		judgementFromServer.setBackground(Color.white);
		judgementFromServer.setBounds(170,261,360,36);
		judgementFromServer.setFont(new Font("Dialog", Font.PLAIN, 14));
		add(judgementFromServer);
		judgementFromServer.setEnabled(false);
		userReply = new java.awt.TextField();
		userReply.setBounds(170,150,360,36);
		userReply.setFont(new Font("Dialog", Font.PLAIN, 14));
		userReply.addActionListener(answerListener);
		add(userReply);
		
		port = Integer.parseInt(getParameter("port"));	
		try
		{	if(sock != null) 
				sock.close();
			home = getDocumentBase();	
			sock = new Socket(home.getHost(),port);
	
			// Get I/O streams fromServer the socket
			dis = new BufferedReader(new InputStreamReader( sock.getInputStream() ));
			dat = new PrintStream( sock.getOutputStream() );
			
			judgementFromServer.setText("");
			String questionFromServer = dis.readLine(); 
			fromServer.setText(questionFromServer);
		}
		catch(IOException e)
		{	fromServer.setText("Sorry, IO Error: " + e);
		}

		userReply.setText("");
		userReply.requestFocus();
	}

	private class AnswerListener implements ActionListener
	{	public void actionPerformed(ActionEvent evt)
		{
			String user = userReply.getText();
			dat.println(user);
			try
			{	String judgement = dis.readLine();
				fromServer.setText("");
				judgementFromServer.setText(judgement);
				sock.close();
			}
			catch(IOException e)
			{	fromServer.setText("Sorry, IO Error: " + e);
			}
		    sock = null;

		}
	}

	public void stop()
	{	try
		{	sock.close();
		}
		catch(Exception e)
		{
		}
	}
	
	public void start()
	{	resetter.actionPerformed(null);
	}

	private class ResetListener implements ActionListener
	{	public void actionPerformed(ActionEvent evt)
		{
			try
			{	if(sock == null) 
		        {	sock = new Socket(home.getHost(),port);
		    
		        	// Get I/O streams fromServer the socket
					dis = new BufferedReader(new InputStreamReader( sock.getInputStream() ));
		        	dat = new PrintStream( sock.getOutputStream() );
		        	
		 			judgementFromServer.setText("");
					userReply.setText("");
					String questionFromServer = dis.readLine(); 
					fromServer.setText(questionFromServer);
					userReply.requestFocus();
				}
			}
			catch(IOException e)
			{	fromServer.setText("Sorry, IO Error: " + e);
			}

		}
	}
	
	Button answer;
	Button reset;
	Label label1;
	Label label2;
	Label label3;
	Label label4;
	TextField fromServer;
	TextField judgementFromServer;
	TextField userReply;
	URL home;
	int port = 4444;
	
	Socket sock = null;
	BufferedReader dis;
	PrintStream dat;
	ResetListener resetter = null;

}