package list;

import java.awt.Color;
import java.awt.Point;
import java.awt.event.MouseEvent;

import wheels.users.*;

public class List extends Frame {

  private static final int marginX = 100;
  private static final int marginY = 100;
  private static final int distance = 60;

  public class Node {
    
    private RectangularShape shape;
    private Node next;
    
    public Node (RectangularShape shape, Node list) {
      this.shape = shape;
      this.next = list;
    }
  }

  public class BlueingButton extends RoundedRectangle {
    
    public BlueingButton (int x, int y) {
      super (x, y);
    }

    public void mouseReleased (MouseEvent event) {
      colorList ();
    }
    
  }

  public class RandomColorButton extends RoundedRectangle {
    
    public RandomColorButton (int x, int y) {
      super (x, y);
    }

    public void mouseReleased (MouseEvent event) {
      randomColorList ();
    }    

  }

  public class RandomMoveButton extends RoundedRectangle {
    
    public RandomMoveButton (int x, int y) {
      super (x, y);
    }

    public void mouseReleased (MouseEvent event) {
      randomMoveList ();
    }    

  }
  
  private Node list;
  
  /** Creates and starts a new List application. */
  public List () {
    new RandomMoveButton (270, 400);
    new BlueingButton (330, 400);
    new RandomColorButton (390, 400);
    int y = marginY;
    for (int i = 0, x = marginX; i < 8; i++, x += distance) {
      RectangularShape shape;
      if (i % 2 == 0) {
        shape = new Ellipse (x, y);
      } else {
        shape = new Rectangle (x, y);
      }
      Node node = new Node (shape, list);
      list = node;
    }
  }

  public void colorList () {
    Node node = list;
    while (node != null) {
      node.shape.setColor (Color.blue);
      node = node.next;
    }
  }

  private void randomColorList () {
    for (Node node = list; node != null; node = node.next) {
      int red = (int) (256 * Math.random ());
      int green = (int) (256 * Math.random ());
      int blue = (int) (256 * Math.random ());
      Color randomColor = new Color (red, green, blue);
      node.shape.setColor (randomColor);
    }
  }

  public void randomMoveList () {
    for (Node node = list; node != null; node = node.next) {
      if (Math.random () > 0.8) {break;}
      if (Math.random () > 0.2) {continue;}
      int x = node.shape.getXLocation ();
      int y = node.shape.getYLocation () + (int) (10 * Math.random ());
      node.shape.setLocation (x, y);
    }
  }

  public static void main (String [] arguments) {
    new List ();
  }
}