//Mult rev .26
//February 13, 1999
//Copyright (c) 1996 - 1999 Philip Lin
//
// HTTPClient Copyright (C) 1996  Ronald Tschalaer
//   for more information: 
//   http://www.innovation.ch/java/classes.html
// 
import java.applet.*;
import java.awt.*;
import java.util.Date;
import HTTPClient.*;
import java.io.*;
import java.net.*;

public class Mult extends Applet implements Runnable{
  static long counter = 0;
  Font font1, font2;
  Frame Frame1 = null;
  URL u = null;
  private Thread timer_thread = null;

  public void init() {
    setLayout(new BorderLayout());
  }

  public void start() {
    Panel p = new Panel();
      p.add(new Button("Start Mult"));
      add("South", p);
      p.add(new Button("See Mult Hall of Fame"));
      add("South", p);

    if (timer_thread == null){
      timer_thread = new Thread(this);
      timer_thread.start();
    }
  }



  public void paint(Graphics g){
    g.setColor(Color.black);
    font1 = new Font("TimesRoman", Font.BOLD, 24);
    font2 = new Font("TimesRoman", Font.PLAIN, 18);
    g.setFont(font1);                      
    g.drawString("The Mult Applet",10,20);

    g.setFont(font2);
    g.drawString("This is a trainer for learning the multiplication tables. The tables from 2 X to 9 X are", 30, 60);
    g.drawString("scrambled and displayed in a window. You must enter the answer in the yellow prompt", 30, 80);
    g.drawString("and press the 'Enter' key. Before you press the 'Enter' key, you may correct a mistake by", 30, 100);
    g.drawString("backspacing by pressing the 'Backspace' key but once you press 'Enter' you will not be", 30, 120); 
    g.drawString("permitted to change an answer. After you have completed all 64 multiplications, you will", 30, 140);
    g.drawString("be told how many (if any) you got wrong and given a chance to correct the mistakes. (The", 30, 160);
    g.drawString("prompt will turn to red) If you get them all right the first time, you will be told the time ", 30, 180);
    g.drawString("it took you. You may then submit your score to the Mult Hall of Fame.", 30, 200);

  }

  public boolean action(Event evt, Object arg) {
    if("Start Mult".equals(arg)) {
      if (Frame1 != null)
        Frame1.dispose();
      Frame1 = new Frame1(this);
      return true;
    }


    if("See Mult Hall of Fame".equals(arg)) {
      try {
        u = getDocumentBase();
        u = new URL("http://www.islandnet.com/~dsfa/java/multhalloffame.html");

      }
      catch(MalformedURLException u) {
        showStatus("Error");
      }
      getAppletContext().showDocument(u);
      return true;
    }
    return false;
  }
  public void stop(){
    if((timer_thread != null) && timer_thread.isAlive())
      timer_thread.stop();
    timer_thread = null;
  }

  public void run(){
    while(true){
      try {
        Thread.sleep(200);
      } catch (InterruptedException e){};
      counter ++;
    }
  }
}

class Dialog1 extends Dialog {

  static final int H_SIZE = 300;
  static final int V_SIZE = 200;
  Date d;
  int time, min, sec;
  int errors;
  submitWindow window = null;
  Applet ap;

    public Dialog1(Frame1 parent, int n, int t, Applet applet ) {

    super(parent, "Mult", true);
    pack();

    Panel p = new Panel();
    if (n == 0) {
      p.add(new Button("Cancel"));
      add("South", p);
      p.add(new Button("Submit your time to Mult Hall of Fame"));
      add("South", p);
    } else {
      p.add(new Button("Close"));
      add("South", p);
    }
    time = t / 5;
    min = time / 60;
    sec = time - min * 60;
    errors = n;
    ap = applet;
    resize(H_SIZE, V_SIZE);
    setBackground(Color.white);
    setForeground(Color.black);
  }

  public void paint(Graphics g){

    StringBuffer str = new StringBuffer();
    g.setFont(new Font("TimesRoman", Font.BOLD, 24));
    g.setColor(Color.red);
    if (errors == 0) {
      g.drawString("Congatulations!", 40, 50);
      g.drawString("You got them all right.", 30, 70);
      str.append("Time: ");
      if (min != 0) {
        str.append(String.valueOf(min));
        str.append(" mins ");
      }
      str.append(String.valueOf(sec));
      str.append(" secs");
      g.drawString(str.toString(), 50, 90);
      }
    else {
      str.append("You got ");
      str.append(String.valueOf(errors));
      str.append(" wrong.");
      g.drawString(str.toString(), 30, 50);
    }
  }


  public boolean handleEvent(Event evt) {

    switch(evt.id) {
      case Event.WINDOW_DESTROY: {
        dispose();
        return true;
      }
      case Event.ACTION_EVENT: {
        if("Cancel".equals(evt.arg) || "Close".equals(evt.arg)) {
          dispose();
          return true;
        }
        else if ("Submit your time to Mult Hall of Fame".equals(evt.arg)) {
          window = new submitWindow(time, ap);
          window.setTitle("Submit");
          window.pack();
          window.show();
          dispose();
          return true;
        }
      }
      default:
    }
    return false;
  }
}

class submitWindow extends Frame {

  static final int FONTHEIGHT = 12;
  static final String FONTSTRING="System";
       

  
  TextArea txt8=null;
  TextField[] txt;

  Applet ap;
  int i, time;

  public submitWindow(int t, Applet applet) {

    time = t;
    ap = applet;
    Label[] lbl;
    Button button1, button2;
    String[] label = {"All Fields are Optional",
                      "FirstName:",
                      "LastName:",
                      "Age:",
                      "City:",
                      "Province or State:",
                      "Country:",
                      "URL and/or Email:",
                      "Comments:"
                       };

    txt = new TextField[8];
    for (i = 0; i < 7; i++)
      txt[i] = null;
    lbl = new Label[9];

    GridBagLayout gridbag=new GridBagLayout();
    GridBagConstraints c=new GridBagConstraints();
        	
    setFont(new Font(FONTSTRING,Font.BOLD,FONTHEIGHT));
    setLayout(gridbag);
			
    setBackground(Color.lightGray);

    c.fill=GridBagConstraints.NONE;
    c.weightx=1.0;
    c.weighty=1.0;
    c.ipadx=4;
    c.ipady=4;
    c.insets=new Insets(5,5,5,5);

    c.gridwidth=GridBagConstraints.REMAINDER;

    lbl[0] = new Label(label[0]);
    gridbag.setConstraints(lbl[0],c);
    add(lbl[0]);

    for (i = 1; i < 8; i++) {
      c.gridwidth=1;
      lbl[i] = new Label(label[i]);
      gridbag.setConstraints(lbl[i],c);
      add(lbl[i]);

      c.gridwidth=GridBagConstraints.REMAINDER;
      txt[i] = new TextField("", 16);
      gridbag.setConstraints(txt[i] ,c);
      add(txt[i]);
    }

    c.gridwidth=GridBagConstraints.REMAINDER;
    c.fill = GridBagConstraints.BOTH;
    lbl[8] = new Label(label[8]);
    gridbag.setConstraints(lbl[8],c);
    add(lbl[8]);

    c.gridwidth=GridBagConstraints.REMAINDER;
    c.fill=GridBagConstraints.BOTH;                             
    txt8 = new TextArea(5,34);
    gridbag.setConstraints(txt8,c);
    add(txt8);

    c.gridwidth=1;
    c.anchor=GridBagConstraints.WEST;
    button1 = new Button("Cancel");
    gridbag.setConstraints(button1,c);
    add(button1);

    c.anchor=GridBagConstraints.EAST;
    button2 = new Button("Submit");
    gridbag.setConstraints(button2,c);
    add(button2);

  }

  public boolean action(Event evt, Object arg) {
    

    if (arg.equals("Cancel")) {
      hide();
      return true;
    }
    else  if (arg.equals("Submit")) {
      NVPair form_data[] = new NVPair[11];
      form_data[0] = new NVPair("TO", "dsfa");
      form_data[1] = new NVPair("SUBJECT", "Mult Result");
      form_data[2] = new NVPair("NAME1", txt[1].getText());
      form_data[3] = new NVPair("NAME2", txt[2].getText());
      form_data[4] = new NVPair("AGE", txt[3].getText());
      form_data[5] = new NVPair("CITY", txt[4].getText());
      form_data[6] = new NVPair("PROV", txt[5].getText());
      form_data[7] = new NVPair("COUNTRY", txt[6].getText());
      form_data[8] = new NVPair("URL", txt[7].getText());
      form_data[9] = new NVPair("BODY", txt8.getText());
      form_data[10] = new NVPair("TIME", String.valueOf(time));

      try {
        HTTPConnection con = new HTTPConnection(ap);
        HTTPResponse   rsp = con.Post("/cgi-bin/mail", form_data);
        if (rsp.StatusCode >= 300)
          System.err.println("Received Error: "+rsp.ReasonLine);


     } catch (AuthTypeNotImplementedException ae) {
         System.err.println("AuthTypeNotImplementedException: " + ae);
       } catch (IOException ioe) {
           System.err.println("IOException: " + ioe);
         }
     dispose();
     return true;


    }

    return false;
  }

  public synchronized boolean handleEvent(Event evt) {

    if (evt.id == Event.WINDOW_DESTROY) {
      hide(); 
      return true;
    }
    return super.handleEvent(evt);
  }

}

class Frame1 extends Frame {

  static final int H_SIZE = 750;
  static final int V_SIZE = 480;

  long startTime; 
  Font font;
  int x, y;
  int count, errors, mode;
  StringBuffer InputString = new StringBuffer();
  StringBuffer str = new StringBuffer();
  boolean cr;
  int[][] inorder;
  int[] error;
  int[] answer;
  boolean[] where;
  Applet ap;
  Dialog D1;

  public Frame1(Applet applet ) {

    int i, j, n;
    int temp0, temp1;

    setTitle("Mult");
    pack();
    resize(H_SIZE, V_SIZE);
    show();

    ap = applet;

    count = 0;
    errors = 0;
    mode = 1;

    inorder = new int [2][64];
    error = new int[64];

    answer = new int[64];
    where = new boolean[64];

    for (i = 0; i < 64; i++) {
      inorder[0][i] = i / 8 + 2;
      inorder[1][i] = i % 8 + 2;
      where[i] = false;
      answer[i] = -1;
    }
    where[0] = true;

    for (i = 0; i < 64; i++) {
      n = (int)Math.rint(Math.random() * (63 - i) + i);
      temp0 = inorder[0][n];
      temp1 = inorder[1][n];
      inorder[0][n] = inorder[0][i];
      inorder[1][n] = inorder[1][i];
      inorder[0][i] = temp0;
      inorder[1][i] = temp1;
    }


    font = new java.awt.Font("Courier", Font.PLAIN, 16);

    requestFocus();
   startTime = Mult.counter;
  }

  public void paint(Graphics g) {
    int i, j;
    int m;
    int x, y;
    Color c;

    g.setFont(font);
    
    for (i = 0; i < 64; i++) {

        x = i % 6;
        y = i / 6;
        str.setLength(0);
        str.append(String.valueOf(inorder[0][i]));
        str.append(" x ");

        str.append(String.valueOf(inorder[1][i]));
        str.append(" = ");
        g.drawString(str.toString(), 20 + x * 120, 48 + y * 35);

        if (where[i] == true){
          c = g.getColor();
          if (mode == 1)
            g.setColor(Color.yellow);
          else
            g.setColor(Color.red);
          g.fillRect(100 + x * 120, 35 + y * 35, 28, 14);
          g.setColor(c);
        }
        if (answer[i] != -1)
          g.drawString(String.valueOf(answer[i]).toString(),
                                100 + x * 120, 48 + y * 35);

     } 
  }

  public boolean handleEvent(Event e) {
    int a, i, l, time;
    boolean flag;
    char ch;
    Date d;

    switch(e.id) {
      case Event.WINDOW_DESTROY: {
        dispose();
        return true;
      }
      case Event.KEY_PRESS: {
        if (e.key == 0x0a) {

          if (mode == 1) {

            repaint(100 + (count % 6) * 120, 35 + (count / 6) * 35, 28, 14);
            where[count] = false;
            if (answer[count] != inorder[0][count] * inorder[1][count]) {
              errors++;
              error[errors] = count;
            }
            count++;
            InputString.setLength(0);


            if (count == 64) {

              time = (int)(Mult.counter - startTime);
              D1 = new Dialog1(this, errors, time, ap);
              D1.show();
              requestFocus();

              if (errors > 0) {
                mode = 2;
                count = error[errors];
                errors--;
                where[count] = true;

              }
            } else
                where[count] = true;
          }
          else if (mode == 3)
            if (answer[count] == inorder[0][count] * inorder[1][count]) {

              where[count] = false;
              if (errors > 0) {
                mode = 2;
                count = error[errors];
                where[count] = true;
                errors--;

                repaint();
              } else D1.dispose();

            }
            else
              mode = 2;
        }
          else if ((e.key == 0x08) & (InputString.length() > 0)) {
            InputString.setLength(InputString.length() - 1);
            if (InputString.length() > 0 ) 
              answer[count] = Integer.parseInt(InputString.toString());
            else
              answer[count] = -1;
          }

          else if ((e.key > 0x2f) & (e.key < 0x3a)) {

            if (mode == 2) {
              InputString.setLength(0);
              answer[count] = -1;
              repaint();
              mode = 3;
            }
            InputString.append((char)e.key);
            if (InputString.length() > 2)
              InputString.setLength(2);
            answer[count] = Integer.valueOf(InputString.toString()).intValue();

          }
          repaint(100 + (count % 6) * 120, 35 + (count / 6) * 35, 28, 14);
          return true;
        
      }
      default:
    }
    return false;
  }

}