import java.io.*;
import java.net.*;
import java.applet.Applet;
import java.awt.*;
/* ***************************************************************
                                                 Bert G. Wachsmuth
                                                 June 3, 1996

   A client program for Knock Knock jokes, implemented as an applet.
   There are three classes for this program:

      JokeClient: contains client part of the protocol. The commands
                  the client can handle are 'get' and 'bye'.
      JokePlayer: if a joke was received, this object plays the
                  joke interactively inside the JokeClient applet.
      LineClient: Sets up the connections to the server. Provides
                  four public methods: 
                      Open:        establishes connection, blocks server
                      Close:       closes connection, frees server
                      SendLine:    sends string or integer to server
                      ReceiveLine: receives string from server
                  This object can be used for any line-based client-server
                  application.
   *************************************************************** */
public class JokeClient extends Applet
{
   private static String theHost = "kitten.shu.edu";
   private static int thePort = 4444;

   private String     ButtonLabel   = "Get new Joke";
   private Button     JokeControl   = new Button(ButtonLabel);
   private List       Jokes         = new List();
   private LineClient theClient     = new LineClient(theHost, thePort);
   private JokePlayer Player;
/* *************************************************************** */
   public void init()
   {
      setLayout(new BorderLayout());
      add("Center",Jokes);
      add("South",JokeControl);
      validate();
      resize(300,200);
   }
/* *************************************************************** */
   private void getJoke()
   {
      showStatus(theClient.Open());
      theClient.SendLine("get");
      String Clue  = theClient.ReceiveLine();
      String Punch = theClient.ReceiveLine();
      theClient.SendLine("bye");
      showStatus(theClient.Close());
      Player = new JokePlayer(JokeControl,Jokes, Clue, Punch, ButtonLabel);
   }
/* *************************************************************** */
   public boolean handleEvent(Event e)
   {
      if (e.target instanceof Button)
      {
         if (e.arg.equals(ButtonLabel))
         {
            Jokes.delItems(0,Jokes.countItems()-1);
            Jokes.clear();	
            getJoke();
            return true;
         }
         else
            return Player.handleButton(e.arg);
      }
      else
         return super.handleEvent(e);
   }
/* *************************************************************** */
}