//Title:       Instructor
//Version:     1.0
//Copyright:   Copyright (c) Vairavan Vairavan
//Author:      Vairavan Vairavan
//Company:     UWM
//Description:

package colors;

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

public class Colors extends Applet implements Runnable,ActionListener{
  boolean isStandalone = false;
  Thread counterThread;
  Label countValue;
  Button slow,fast;
  int count = 10;
  int sleeptime =1000;
  Color[] colorlist = { Color.white,Color.blue, Color.green,                         Color.yellow, Color.darkGray,                                 Color.magenta,Color.pink,Color.red,
                       Color.white, Color.cyan,Color.orange};

  //Get a parameter value
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }

  //Construct the applet
  public Colors() {
  }

  //Initialize the applet
  public void init()
  {
  add(new Label("Count: "));
  countValue = new Label(Integer.toString(count));
  add(countValue);
  slow = new Button("Slow Down Counting");
  add(slow);
  slow.addActionListener(this);
  fast = new Button("Speed up Counting");
  add(fast);
  fast.addActionListener(this);
  }

  //Component initialization
  private void jbInit() throws Exception {
  }

  //Start the thread
  public void start()
  {
  if(counterThread == null)
   {
   counterThread = new Thread(this);
   counterThread.start();
   }
  }

  //Stop the thread
  public void stop()
  {
  if(counterThread != null)
   {
   counterThread = null;
   }
  }

  public void run()
  {
  while(true)
  {
  try
   {
   counterThread.sleep(sleeptime);
   startCounting();
   }
  catch(InterruptedException e)
   {
   }
  }
  }
  public void actionPerformed(ActionEvent e)
  {
  Button selectedbutton= (Button)e.getSource();
  if (selectedbutton.equals(slow))
    sleeptime= sleeptime + 1000;
  if (selectedbutton.equals(fast))
    {
    sleeptime= sleeptime - 1000;
    if (sleeptime <= 0 )
       sleeptime = 1000;
    }
  }
  public void startCounting()
  {
  count--;
  if(count == 0)
   count = 10;
  countValue.setText(Integer.toString(count));
  setBackground(colorlist[count]);
  }
}