import java.applet.Applet;
import java.awt.*;
import com.braju.applet.*;
import com.braju.format.*;

public class MouseApplet extends Applet implements DoneListener {
  private LoaderPanel loaderPnl;
  private Panel mainPnl;

  String theMessage;
  Button theButton;

  int messageX, messageY;
  int colorIndex = -1;

  static Color[] someColors = {
     Color.black, Color.red, Color.green, Color.blue, Color.magenta };
     
  public void init() {
    setBackground(Color.white);
    // The loader that is shown initially...
    loaderPnl = new LoaderPanel();
    loaderPnl.addDoneListener(this);
    add(loaderPnl);
    // The main panel that will be shown after loading...
    mainPnl = new Panel();
    mainPnl.hide();
    mainPnl.setBackground(Color.white);
    theButton = new Button("Change Color");
    mainPnl.add(theButton);
    add(mainPnl);
  }

  public void done(DoneEvent e) {
    loaderPnl.hide();
    mainPnl.show();
    messageX = size().width/2;
    messageY = size().height/2;
    colorIndex = 0;
    validate();
    repaint();
  }

  public void paint(Graphics graphics) {
    if (colorIndex == -1) return;

    // Set the text color.
    graphics.setColor(currentColor());

    theMessage = Format.sprintf("[%03d,%03d] [%#02.2x,%#02x]", 
       new Parameters(messageX).add(messageY)
          .add((short)messageX).add((short)messageY));

    graphics.drawString(theMessage, messageX,messageY);
  } // paint

  public boolean mouseDrag(Event e, int x, int y) {
    messageX = x; 
    messageY = y;

    // Repaing everything in the window.
    repaint();

    return true;
  } // mouseDrag


  public boolean action(Event e, Object arg) {
    // If the button was clicked, change color...
    if (e.target == theButton) {
      changeColor();
      return true;
    }

    return false;
  } // mouseMoved

  synchronized private void changeColor() {
    if (++colorIndex == someColors.length)
      colorIndex = 0;

    theButton.setForeground(currentColor());
    repaint();
  } // changeColor

  synchronized private Color currentColor() {
    return someColors[colorIndex];
  } // currentColor
}