import java.applet.Applet;
import java.awt.*;

public class MoveBoxWithCanvas extends Applet
{
   private Button up = new Button("Up");
   private Button down = new Button("Down");
   private Button left = new Button("Left");
   private Button right = new Button("Right");
   private Button increase = new Button("[+]");
   private Button decrease = new Button("[-]");

   private Choice objects = new Choice();
   private CheckboxGroup colors = new CheckboxGroup();
   private Checkbox red    = new Checkbox("red", colors, true),
                    black  = new Checkbox("black", colors, false),
                    blue   = new Checkbox("blue", colors, false),
                    yellow = new Checkbox("yellow", colors, false),
                    green  = new Checkbox("green", colors, false),
                    pink   = new Checkbox("magenta", colors, false);

   private DrawingCanvas drawing = new DrawingCanvas();
   // init method
   public void init()
   {
      objects.addItem("Rectangle");
      objects.addItem("Circle");
      objects.addItem("Oval");

      Panel head = new Panel();
      head.setLayout(new FlowLayout());
      head.add(new Label("Choose an object: "));
      head.add(objects);

      Panel colorCol = new Panel();
      colorCol.setLayout(new GridLayout(6,1));
      colorCol.add(black);      colorCol.add(blue);
      colorCol.add(green);      colorCol.add(pink);
      colorCol.add(red);        colorCol.add(yellow);

      Panel buttons = new Panel();
      buttons.setLayout(new FlowLayout());
      buttons.add(up);
      buttons.add(down);
      buttons.add(left);
      buttons.add(right);
      buttons.add(increase);
      buttons.add(decrease);

      setBackground(Color.blue);
      setLayout(new BorderLayout());
      add("South", buttons);
      add("North", head);
      add("West", colorCol);
      add("Center", drawing);
   }
   // public methods
   public boolean action(Event e, Object o)
   {
      if (e.target == up)
         return drawing.handleUp();
      else if (e.target == down)
         return drawing.handleDown();
      else if (e.target == left)
         return drawing.handleLeft();
      else if (e.target == right)
         return drawing.handleRight();
      else if (e.target == increase)
         return drawing.handleIncrease();
      else if (e.target == decrease)
         return drawing.handleDecrease();
      else if (e.target == black)
         return drawing.handleColorChange(Color.black);
      else if (e.target == black)
         return drawing.handleColorChange(Color.black);
      else if (e.target == blue)
         return drawing.handleColorChange(Color.blue);
      else if (e.target == green)
         return drawing.handleColorChange(Color.green);
      else if (e.target == pink)
         return drawing.handleColorChange(Color.pink);
      else if (e.target == red)
         return drawing.handleColorChange(Color.red);
      else if (e.target == yellow)
         return drawing.handleColorChange(Color.yellow);
      else if (e.target instanceof Choice)
         return drawing.handleChangeObject(objects.getSelectedItem());
      else
         return super.action(e, o);
   }
}