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

   The JokePlayer class of the JokeClient program. This object plays 
   the joke interactively inside the JokeClient applet's list box and
   joke control button.
   *************************************************************** */
public class JokePlayer extends Thread
{
   private static int WAITING    = 0;
   private static int DONE_KNOCK = 1;
   private static int DONE_Clue   = 2;
   private static int DONE_PUNCH = 3;
   private static int GET_CLUE    = 4;
   private static int GET_PUNCH  = 5;
   private static int DONE       = 6;

   private Button      Control;
   private List        Jokes;
   private String      Clue;
   private String      Punch;
   private String      DefaultButtonLabel;
   private int         status = WAITING;
/* *************************************************************** */
   public JokePlayer(Button _Control, List  _Jokes, 
                     String _Clue,    String _Punch,
                     String _DefaultButtonLabel)
   {
      Clue               = _Clue;
      Punch              = _Punch;
      Control            = _Control;
      Jokes              = _Jokes;
      DefaultButtonLabel = _DefaultButtonLabel;
      start();
   }
/* *************************************************************** */
   public void run()
   {
      while (true)
      {
         if (status == WAITING)
         {
            Jokes.addItem("Knock,Knock!");
            Control.setLabel("Who's there?");
            status = DONE_KNOCK;
         }
         if (status == GET_CLUE)
         {
            Jokes.addItem(Clue);
            Control.setLabel(Clue + " who?");
            status = DONE_Clue;
         }
         if (status == GET_PUNCH)
         {
            Jokes.addItem(Punch);
            Control.setLabel(DefaultButtonLabel);
            status = DONE;
            stop();
         }
         try
         { 
            sleep(500); 
         }
         catch(InterruptedException e)
         {}
      }
   }
/* *************************************************************** */
   public boolean handleButton(Object arg)
   {
      if ("Who's there?".equals(arg))
      {
         Jokes.addItem("--> Who's there?");
         status = GET_CLUE;
         return true;
      }
      if ((Clue + " who?").equals(arg))
      {
         Jokes.addItem("--> "+Clue+" who?");
         status = GET_PUNCH;
         return true;
      }
      return false;
   }
/* *************************************************************** */
}