import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import java.net.URL;


public class CircuitBuild extends JApplet implements ActionListener {

Image image;
public static URL url;



/* public void Initialise()
 {


 try {
     url = new URL(getCodeBase(),"cell.png");

    } catch (IOException e){
    }
}
 */

  public static void main(String [] args) {


   // try {
  //  url = new URL(getCodeBase(), "cell.png");
   //} catch (IOException e){
   // }

    JFrame frame = new JFrame();
    frame.setTitle("Constructing a Circuit");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JApplet applet = new CircuitBuild();
    applet.init();
    frame.getContentPane().add(applet);
    frame.pack();
    frame.setVisible(true);

}



  JavaDraw2DPanel panel = null;

  public void init() {
    JMenuBar mb = new JMenuBar();
    setJMenuBar(mb);
    JMenu menu = new JMenu("Components");
    mb.add(menu);
    JMenuItem mi = new JMenuItem("Voltmeter");
    mi.addActionListener(this);
    menu.add(mi);
    mi = new JMenuItem("Ammeter");
    mi.addActionListener(this);
    menu.add(mi);
    mi = new JMenuItem("Resistor");
    mi.addActionListener(this);
    menu.add(mi);
    mi = new JMenuItem("Switch");
    mi.addActionListener(this);
    menu.add(mi);
    mi = new JMenuItem("Wiring");
    mi.addActionListener(this);
    menu.add(mi);
    mi = new JMenuItem("Lightbulb");
    mi.addActionListener(this);
    menu.add(mi);
    mi = new JMenuItem("Cell");
    mi.addActionListener(this);
    menu.add(mi);
    panel = new JavaDraw2DPanel();
    getContentPane().add(panel);
  }

  public void actionPerformed(ActionEvent ev) {
    String command = ev.getActionCommand();
    if ("Wiring".equals(command)) {
      panel.shapeType = panel.LINE2D;
    }


}

class JavaDraw2DPanel extends JPanel implements MouseListener, MouseMotionListener {
  private Vector shapes = new Vector();
  static final int Voltmeter = 0;
  static final int Ammeter = 1;
  static final int Resistor = 2;
  static final int Switch = 3;
  static final int LINE2D = 4;
  static final int Lightbulb = 5;
  static final int Cel = 6;
  static final int POLYGON = 7;
  static final int GENERAL = 8;
  static final int AREA = 9;

  int shapeType = Voltmeter;
  // vector of input points
  Vector points = new Vector();
  int pointIndex = 0;
  Shape partialShape = null;
  Point p = null;


    //ImageIcon circuitIcon = new ImageIcon (url);
    //Image component = circuitIcon.getImage();


  public JavaDraw2DPanel() {
    super();
    setBackground(Color.white);
    setPreferredSize(new Dimension(640, 480));
    addMouseListener(this);
    addMouseMotionListener(this);



  }

  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D)g;
    g2.setStroke(new BasicStroke(3));
    g2.setColor(Color.blue);



    //g.drawImage(component, 10, 10, this);


    for (int i = 0; i < shapes.size(); i++) {

      Shape s = (Shape)shapes.get(i);

      g2.draw(s);



}





    }


  public void mouseClicked(MouseEvent ev) {
  }

  public void mouseEntered(MouseEvent ev) {
  }

  public void mouseExited(MouseEvent ev) {
  }

  public void mousePressed(MouseEvent ev) {
    points.add(ev.getPoint());
    pointIndex++;
    p = null;
  }

  public void mouseReleased(MouseEvent ev) {
    Graphics g = getGraphics();
    Point p1 = (Point)(points.get(pointIndex-1));
    p = ev.getPoint();
    Shape s = null;
    switch (shapeType) {
        case LINE2D:
        s = new Line2D.Float(p1.x, p1.y, p.x, p.y);
        break;

    }
    if (s != null) {
      shapes.add(s);
      points.clear();
      pointIndex = 0;
      p = null;
      repaint();
    }
  }

  public void mouseMoved(MouseEvent ev) {
  }

  public void mouseDragged(MouseEvent ev) {
    Graphics2D g = (Graphics2D)getGraphics();
    g.setXORMode(Color.white);
    Point p1 = (Point)points.get(pointIndex-1);
    switch (shapeType) {
      case LINE2D:
      break;
    }
  }
}
}