//------------------------------------------------------------------------------
// thought.java - Give a thought of the day
// Copyright 1997, All rights reserved
// Version: 1.0
//  Author: Jon McCain
// Created: 10/18/97
//
//------------------------------------------------------------------------------
// Parameters:  datafile - Name of the file with the thoughts. The file
//                         should contain one thought per line
//              maxcount - Number of thoughts in the file
//

import java.io.*;
import java.awt.*;
import java.net.*;
import java.util.*;

public class thought extends java.applet.Applet implements Runnable {

   Thread doit = null;
   String datafile;
   String message;
   int count,maxcount;
   Random r = new Random();

   public String getAppletInfo()
     { return "Thought of the Day 1.0 by Jon McCain"; }

   //randomly pick a thought from the data file
   void getthought()
   {
     DataInputStream dis;

     // randomly pick a number from 1 to maxcount
     int n = 1 +  Math.abs(r.nextInt()) % maxcount;

     //now find that line in the list and set message to it
     try
     {
      count = 1;
      URL u = new URL(getCodeBase() + datafile );
      dis = new DataInputStream( u.openConnection().getInputStream() );
      while ( (message=dis.readLine()) != null && count != n)
      {
        count++;
      }
     }
     catch (Exception e) { System.out.println( e ); }
   }

   // Read the parameters
   public void init()
   {
     datafile = getParameter("datafile");
     String s = getParameter("maxcount");
     maxcount = (s != null) ? Integer.valueOf(s).intValue() : 1;

     getthought();
   }

   // draw a box and show the message
   // Note: can only handle 2 lines of text.
   public void paint(Graphics g)
   {
     Dimension d = size();
     int pos;

     //draw the box
     g.setColor(Color.black);
     g.fillRect(0,0,d.width,d.height);
     g.setColor(Color.gray);
     g.drawRect(0,0,d.width,d.height);
     g.drawRect(1,1,d.width - 2,d.height - 2);
     g.setColor(Color.red);

     //see if can fit whole message on one line
     pos = message.length();
     while (g.getFontMetrics().stringWidth(message.substring(0,pos))
               > d.width - 14)
        { pos--; }
     g.drawString(message.substring(0,pos),5,14);
     //wrap around to second line if need too.
     if (message.length() > pos)
        g.drawString(message.substring(pos,message.length()),5,27);
   }

   // on a mouse click get a new thought
   public boolean mouseUp(java.awt.Event evt, int x, int y)
   {
     getthought();
     repaint();
     return true;
   }

   public boolean mouseEnter(java.awt.Event evt, int x, int y)
   {
     getAppletContext().showStatus("Click for another thought");
     return true;
   }

   public boolean mouseExit(java.awt.Event evt, int x, int y)
   {
     getAppletContext().showStatus("");
     return true;
   }

   public void run()
     { Thread.currentThread().setPriority(Thread.MIN_PRIORITY); }

   public void start()
   {
     if (doit == null)
     {
	    doit = new Thread(this);
	    doit.start();
     }
     getthought();
   }

   public void stop()
     { doit = null; }

}