/*
  Project 3:	Making Decision
  Programmer:	Gary Haines
  Date:		January 28, 2003
  Program Name:	CandleApplet
*/

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

public class CandleApplet extends Applet implements ItemListener
{
  //Create components for applet
  Label companyNameLabel = new Label("Candle Line--Candles Online");

  Label priceLabel = new Label("Please enter the total dollar amount of your order:");
    TextField priceField = new TextField(35);

  Label shippingLabel = new Label("Please choose your method of shipping:");

  CheckboxGroup shippingGroup = new CheckboxGroup();
    Checkbox oneDayBox = new Checkbox("Priority (Overnight)",false,shippingGroup);
    Checkbox twoDayBox = new Checkbox("Express (2 business days)",false,shippingGroup);
    Checkbox moreDaysBox = new Checkbox("Standard (3 to 7 business days)",false,shippingGroup);
    Checkbox hiddenBox = new Checkbox("",true,shippingGroup);

  Label outputLabel = new Label("We guarantee on time delivery, or your money back.");

  public void init()
  {
    //Add components to window and set colors
    setBackground(Color.cyan);
    add(companyNameLabel);
    add(priceLabel);
    add(priceField);
      priceField.requestFocus();
    add(shippingLabel);
    add(oneDayBox);
      oneDayBox.addItemListener(this);
    add(twoDayBox);
      twoDayBox.addItemListener(this);
    add(moreDaysBox);
      moreDaysBox.addItemListener(this);
    add(outputLabel);
  }


public void itemStateChanged(ItemEvent choice)
  {
    try
    {
	double shipping;
	double price = Double.parseDouble(priceField.getText());

	//Check to see if price is greater than zero
	if (price <= 0) throw new NumberFormatException();

	//Check to see which option button is selected
	if (oneDayBox.getState())
	  shipping = 14.95;
	else
	  if (twoDayBox.getState())
	     shipping = 11.95;
	  else
	     if (price > 75)
		shipping = 0;
	     else
		shipping = 5.95;

	//Display Output
	outputLabel.setForeground(Color.black);
	outputLabel.setText("Your total cost is $" + (price+shipping));
    }

    catch (NumberFormatException e)
    {
	outputLabel.setText("You must enter a dollar amount greater than zero");
	outputLabel.setForeground(Color.red);
	hiddenBox.setState(true);
	priceField.setText("");
	priceField.requestFocus();
    }

  }
}