/*
    A basic extension of the java.applet.Applet class
 */

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

public class sigfig extends Applet {
	public int nRichtig = 0;
	public int nFalsch = 0;
	public int i = 0;
	public int imax = 12;
	public String zahl[][] = {
		{"1.000","4","Zeros after the decimal point count, too."},
		{"1.1E7","2","The exponent is irrelevant."},
		{"987600.0","7","The zeros count, too."},
		{"1. + 0.4212","1","The lower number of significant figures counts."},
		{"0.002","1","Leading zeros do not count."},
		{"2.0E3","2","The exponent is irrelevant."},
		{"0.002002","4","The leading 0's don't count, but the 0's between the 2's do"},
		{"3.211 - 3.21","3","The lower number of significant figures counts."},
		{"0.123","3","The zero in front of the decimal point does not count."},
		{"987600.","6","The zeros count, too."},
		{"3.1 + 1.222","2","The lower number of significant figures counts."},
		{"2.101E-8","4","The exponent is irrelevant."},
		{"112.1100","7","The two trailing zeros count, too."}};
	public String richtig;
	public String falsch;

	public void init() {
		super.init();
		i = (int)(Math.random()*imax);
		setBackground(Color.white);
		setForeground(Color.black);
		
		//{{INIT_CONTROLS
		setLayout(null);
		resize(500,300);
		button1 = new java.awt.Button("New Number");
		button1.reshape(21,12,93,27);
		add(button1);
		label1 = new java.awt.Label("",Label.CENTER);
		label1.reshape(21,59,318,31);
		label1.setFont(new Font("TimesRoman", Font.BOLD, 18));
		label1.setForeground(new Color(16711680));
		label1.setBackground(new Color(16776960));
		add(label1);
		panel1 = new java.awt.Panel();
		panel1.setLayout(new GridLayout(0,1,5,5));
		panel1.reshape(373,2,124,296);
		add(panel1);
		label2 = new java.awt.Label("Number of");
		label2.reshape(0,0,124,18);
		label2.setForeground(new Color(255));
		panel1.add(label2);
		label3 = new java.awt.Label("significant");
		label3.reshape(0,23,124,18);
		label3.setForeground(new Color(255));
		panel1.add(label3);
		label4 = new java.awt.Label("figures");
		label4.reshape(0,46,124,18);
		label4.setForeground(new Color(255));
		panel1.add(label4);
		Group1 = new CheckboxGroup();
		radioButton1 = new java.awt.Checkbox("1", Group1, false);
		radioButton1.reshape(0,69,124,18);
		panel1.add(radioButton1);
		radioButton2 = new java.awt.Checkbox("2", Group1, false);
		radioButton2.reshape(0,92,124,18);
		panel1.add(radioButton2);
		radioButton3 = new java.awt.Checkbox("3", Group1, false);
		radioButton3.reshape(0,115,124,18);
		panel1.add(radioButton3);
		radioButton4 = new java.awt.Checkbox("4", Group1, false);
		radioButton4.reshape(0,138,124,18);
		panel1.add(radioButton4);
		radioButton5 = new java.awt.Checkbox("5", Group1, false);
		radioButton5.reshape(0,161,124,18);
		panel1.add(radioButton5);
		radioButton6 = new java.awt.Checkbox("6", Group1, false);
		radioButton6.reshape(0,184,124,18);
		panel1.add(radioButton6);
		radioButton7 = new java.awt.Checkbox("7", Group1, false);
		radioButton7.reshape(0,207,124,18);
		panel1.add(radioButton7);
		radioButton8 = new java.awt.Checkbox("8", Group1, false);
		radioButton8.reshape(0,230,124,18);
		panel1.add(radioButton8);
		radioButton9 = new java.awt.Checkbox("9", Group1, false);
		radioButton9.reshape(0,253,124,18);
		panel1.add(radioButton9);
		radioButton10 = new java.awt.Checkbox("10", Group1, false);
		radioButton10.reshape(0,276,124,18);
		panel1.add(radioButton10);
		textArea1 = new java.awt.Label("",Label.CENTER);
		textArea1.reshape(1,146,374,90);
		textArea1.setFont(new Font("TimesRoman", Font.BOLD, 14));
		textArea1.setForeground(new Color(255));
		textArea1.setBackground(new Color(16777215));
		add(textArea1);
		label5 = new java.awt.Label("Result: 0 correct, 0 false");
		label5.reshape(26,261,314,31);
		label5.setFont(new Font("TimesRoman", Font.PLAIN, 18));
		add(label5);
		canvas1 = new java.awt.Canvas();
		canvas1.reshape(349,3,144,295);
		canvas1.setBackground(new Color(16777215));
		add(canvas1);
		//}}
		
		canvas1.hide();
	}

	public boolean handleEvent(Event event) {
		if (event.target == button1 && event.id == Event.ACTION_EVENT){
			neueZahl();
			canvas1.hide();
		}
		if (event.target instanceof Checkbox && event.id == Event.ACTION_EVENT &&
			!(label1.getText() == "")){
			Checkbox currentCheckbox = (Checkbox)event.target;
			if (currentCheckbox.getLabel() == richtig){
				textArea1.setText("Correct!");
				nRichtig++;
				label5.setText("Result: "+nRichtig+" correct, "+nFalsch+" false");
				if (nRichtig == imax) {
					button1.hide();
					label5.setForeground(Color.red);
					label5.setText("Final Result: "+nRichtig+" correct, "+nFalsch+" false");
				} else {
					canvas1.show();
				}
			} else {
				textArea1.setText(zahl[i][2]);
				nFalsch++;
				label5.setText("Result: "+nRichtig+" correct, "+nFalsch+" false");
			}
		}
		return super.handleEvent(event);
	}
	
	public boolean neueZahl(){
		i++;
		radioButton10.setState(false);
		radioButton9.setState(false);
		radioButton8.setState(false);
		radioButton7.setState(false);
		radioButton6.setState(false);
		radioButton5.setState(false);
		radioButton4.setState(false);
		radioButton3.setState(false);
		radioButton2.setState(false);
		radioButton1.setState(false);
		if (i>imax) i = 0;
		label1.setText(zahl[i][0]);
		richtig = zahl[i][1];
		falsch   = zahl[i][2];
		textArea1.setText("");
		return true;
	}

	//{{DECLARE_CONTROLS
	java.awt.Button button1;
	java.awt.Label label1;
	java.awt.Panel panel1;
	java.awt.Label label2;
	java.awt.Label label3;
	java.awt.Label label4;
	java.awt.Checkbox radioButton1;
	CheckboxGroup Group1;
	java.awt.Checkbox radioButton2;
	java.awt.Checkbox radioButton3;
	java.awt.Checkbox radioButton4;
	java.awt.Checkbox radioButton5;
	java.awt.Checkbox radioButton6;
	java.awt.Checkbox radioButton7;
	java.awt.Checkbox radioButton8;
	java.awt.Checkbox radioButton9;
	java.awt.Checkbox radioButton10;
	java.awt.Label textArea1;
	java.awt.Label label5;
	java.awt.Canvas canvas1;
	//}}
}