iluvgrlzwglasses

//GasStationGUI, Michael Mohamed
//ICS4M0
//February 18th 2009
//A GUI based 'Gas Station' applet

//NOTES:
//1. Although the options for regular or waxed washing are checkboxes, when
//added to a CheckboxGroup... they essentially become RadioButtons...
//This makes sense though because you wouldn't really have both at once.
//2. The RadioButtons for the fuel use discounting have been locked to the appropriate states.
import java.applet.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
class GasStationGUI //The application class.
{
    public static void main (String[] args)  //The main method for the application
    {
        GasStation applet = new GasStation ();
    }
}
class GasStation extends JFrame implements ActionListener, ItemListener
{
    //Here be variables - Alter with Caution :o
    public static Container container;
    private Image logo;
    public double washTotal = 0, gasTotal = 0, netTotal = 0, gradeMult = 0, litres = 0, washType = 10, subTotal;
    public boolean noneSelected = true;
    public String gasMessage, gradeString, gasOptString = "No options", oilCheckString = "", shieldCleanString = "", washerFluidString = "", washOptString = "None";
    public JLabel mikesGUI = new JLabel (("                                                           Michael Mohamed's GasStationGUI"));
    public JLabel teacher = new JLabel ("    Mr. R. Prins");
    public JButton mainBut = new JButton ("Main Screen");
    public JButton totBut = new JButton ("Total");
    public JButton exitBut = new JButton ("Exit");
    public JButton carWashBut = new JButton ("Car Wash");
    public JButton gasCalc = new JButton ("Purchase Gas");
    public JButton gasClr = new JButton ("Clear Gas Choices");
    public JLabel gasTitleLabel = new JLabel ("                                                            Welcome to Mike's Gas Station!");
    Panel butPan, y, x;
    public JLabel gradeLabel = new JLabel ("    Grade of Gas?");
    public JRadioButton gold = new JRadioButton ("Gold (1.5x)", true);
    public JRadioButton silver = new JRadioButton ("Silver (1.25x)");
    public JRadioButton bronze = new JRadioButton ("Bronze (1.0x)");
    public ButtonGroup gasGrade = new ButtonGroup ();
    public JRadioButton selfServe = new JRadioButton ("Self Serve (No Charge)", true);
    public JRadioButton fullServe = new JRadioButton ("Full Serve ($10 fee)");
    public JLabel serveLabel = new JLabel ("    Service Style");
    private ButtonGroup serveGroup = new ButtonGroup ();
    public JLabel litresLabel = new JLabel ("    Litres of Gas Purchased ($0.80/L)");
    public JLabel titleLabel = new JLabel ("    Mohamdu's Carwash");
    public JLabel classLabel = new JLabel ("    ICS 4M0");
    public JLabel dateLabel = new JLabel ("    February 20th, 2009");
    public JLabel blank = new JLabel (" ");
    public JTextField litresField = new JTextField ("0", 15);
    public JLabel fullOptions = new JLabel ("    Full Serve Options");
    public Checkbox oilCheck = new Checkbox ("Oil Check", false);
    public Checkbox washerFluid = new Checkbox ("Washer Fluid", false);
    public Checkbox shieldClean = new Checkbox ("Windshield Cleaning", false);
    public CheckboxGroup optionsGroup = new CheckboxGroup ();
    public JLabel fuelLabel = new JLabel ("    Fuel Purchased?");
    public JRadioButton fuelYes = new JRadioButton ("Yes", false);
    public JRadioButton fuelNo = new JRadioButton ("No", true);
    public ButtonGroup fuelGroup = new ButtonGroup ();
    public JLabel washTitle = new JLabel ("                                                                 Welcome to the Car Wash!");
    public JLabel washLabel = new JLabel ("    Wash Type?");
    public CheckboxGroup washGroup = new CheckboxGroup ();
    public Checkbox regWash = new Checkbox ("Regular Wash", true, washGroup);
    public Checkbox waxWash = new Checkbox ("Wash and Wax", false, washGroup);
    public JButton washCalc = new JButton ("Calculate Car Wash Fees");
    public JButton washClr = new JButton ("Clear Wash Values");
    public JLabel totalTitle = new JLabel ("                                                     Please take a look at your transaction record");
    public JLabel gasTotalLabel = new JLabel ("    Your Fuel Total: ");
    public JLabel washTotalLabel = new JLabel ("    Your Car Wash Total: ");
    public JLabel netTotalLabel = new JLabel ("    Your Net Total (Include Tax): ");
    public JTextField gasTotalField = new JTextField ("$0");
    public JTextField washTotalField = new JTextField ("$0");
    public JTextField netTotalField = new JTextField ("$0");
    public JLabel gasOptLabel = new JLabel ("    Full serve options:");
    public JLabel washOptLabel = new JLabel ("    Car wash options:");
    public JTextField gasOptField = new JTextField ("No options");
    public JTextField washOptField = new JTextField ("None.");
    public JLabel subTotalLabel = new JLabel ("    Your subtotal:");
    public JTextField subTotalField = new JTextField ("$0");
    public JButton feesBut = new JButton ("Pay your fees?");
    public JButton restartBut = new JButton ("Restart transaction?");
    public JTextField washPrice = new JTextField ("$0");
    public JLabel washSubTotal = new JLabel ("    Your car wash subtotal:");
    //From here on in, it's all smooth sailing :D

    public GasStation ()  //main applet method
    {
        super ("Gas Station GUI");  //set title
        setSize (1100, 300);
        //Create the main panel for buttons
        butPan = new Panel ();
        butPan.setLayout (new GridLayout (5, 1));
        butPan.add (mikesGUI);
        butPan.add (mainBut);
        butPan.add (carWashBut);
        butPan.add (totBut);
        butPan.add (exitBut);
        //set the ActionListener's for the buttons
        feesBut.addActionListener (this);
        restartBut.addActionListener (this);
        mainBut.addActionListener (this);
        carWashBut.addActionListener (this);
        totBut.addActionListener (this);
        exitBut.addActionListener (this);
        oilCheck.addItemListener (this);
        washerFluid.addItemListener (this);
        shieldClean.addItemListener (this);
        fuelYes.addActionListener (this);
        fuelNo.addActionListener (this);
        gasCalc.addActionListener (this);
        gasClr.addActionListener (this);
        selfServe.addActionListener (this);
        regWash.addItemListener (this);
        waxWash.addItemListener (this);
        washClr.addActionListener (this);
        washCalc.addActionListener (this);
        //Create the primary container
        container = getContentPane ();
        container.setLayout (new GridLayout (1, 2));
        //Adds buttons to the side
        container.add (butPan);
        //Starts up the title screen
        titleScreen ();
        setVisible (true);
    }


    public void titleScreen ()  //Opening Layout - Only shown once.
    {
        //Initialize the panel, set panel for removal and replacement.
        Panel x = new Panel ();
        y = x;
        x.setLayout (new GridLayout (13, 1));
        x.add (blank);
        x.add (blank);
        x.add (blank);
        x.add (blank);
        x.add (titleLabel);
        x.add (classLabel);
        x.add (dateLabel);
        x.add (teacher);
        validate ();
        container.add (x);
        setVisible (true);
    }


    public void mainScreen ()  //Designing the components for the gas purchasing screen
    {
        //Initialize the panel, set panel for removal and replacement.
        Panel x = new Panel ();
        y = x;
        x.setLayout (new GridLayout (6, 1));
        //Set gas title layout
        Panel gasTitle = new Panel ();
        gasTitle.setLayout (new GridLayout (1, 1));
        gasTitle.add (gasTitleLabel);
        //Set gas grade panel
        Panel gradePan = new Panel ();
        gradePan.setLayout (new GridLayout (1, 4));
        gradePan.add (gradeLabel);
        gradePan.add (gold);
        gradePan.add (silver);
        gradePan.add (bronze);
        gasGrade.add (gold);
        gasGrade.add (silver);
        gasGrade.add (bronze);
        //Set input for gas litres
        Panel litrePan = new Panel ();
        litrePan.setLayout (new GridLayout (1, 2));
        litrePan.add (litresLabel);
        litrePan.add (litresField);
        //Set service style selection panel
        Panel servePan = new Panel ();
        servePan.setLayout (new GridLayout (1, 3));
        serveGroup.add (selfServe);
        serveGroup.add (fullServe);
        servePan.add (serveLabel);
        servePan.add (selfServe);
        servePan.add (fullServe);
        //Add the 'Full Serve Options' panel
        Panel optionPan = new Panel ();
        optionPan.setLayout (new GridLayout (1, 4));
        optionPan.add (fullOptions);
        optionPan.add (oilCheck);
        optionPan.add (washerFluid);
        optionPan.add (shieldClean);
        //Add the Calculate and Clear Button panel
        Panel gasButPan = new Panel ();
        gasButPan.setLayout (new GridLayout (1, 2));
        gasButPan.add (gasCalc);
        gasButPan.add (gasClr);
        //Add the various sub-panels into the main gas screen panel
        x.add (gasTitle);
        x.add (gradePan);
        x.add (litrePan);
        x.add (servePan);
        x.add (optionPan);
        x.add (gasButPan);
        validate (); // :I
        container.add (x); //Adds the main panel to the main container
        setVisible (true);
    }


    public void washScreen ()
    {
        //Initialize the panel, set panel for removal and replacement.
        Panel x = new Panel ();
        y = x;
        x.setLayout (new GridLayout (5, 1));
        //Create the 'Fuel Purchased' panel and components
        Panel purchasedPan = new Panel ();
        purchasedPan.setLayout (new GridLayout (1, 3));
        purchasedPan.add (fuelLabel);
        purchasedPan.add (fuelYes);
        purchasedPan.add (fuelNo);
        fuelGroup.add (fuelYes);
        fuelGroup.add (fuelNo);
        //Create the 'Wash type' panel
        Panel washTypePan = new Panel ();
        washTypePan.setLayout (new GridLayout (1, 3));
        washTypePan.add (washLabel);
        washTypePan.add (regWash);
        washTypePan.add (waxWash);
        //Create the 'Wash Buttons' panel
        Panel washButPan = new Panel ();
        washButPan.setLayout (new GridLayout (1, 2));
        washButPan.add (washCalc);
        washButPan.add (washClr);
        //Create the Wash text field panel
        Panel washPricePan = new Panel ();
        washPricePan.setLayout (new GridLayout (1, 2));
        washPricePan.add (washSubTotal);
        washPricePan.add (washPrice);
        //These are used in locking the fuel discount options
        //Add all the panels to the main panel
        x.add (washTitle);
        x.add (purchasedPan);
        x.add (washTypePan);
        x.add (washButPan);
        x.add (washPricePan);
        validate (); // :D :D :D
        //Adds main panel to the main container
        container.add (x);
        setVisible (true);
    }


    public void actionPerformed (ActionEvent e) throws ClassCastException, NumberFormatException //The Action Listener response method
    {
        if (e.getSource () == mainBut) //Switch to main fuel screen
        {
            remove (y);
            mainScreen ();
        }
        if (e.getSource () == carWashBut) //Switch to main car wash screen
        {
            remove (y);
            washScreen ();
        }
        if (e.getSource () == totBut) //Switch to the total screen
        {
            remove (y);
            totalScreen ();
        }
        if (e.getSource () == selfServe) //Makes sure that if Self serve is chosen, any Full serve options are reset
        {
            oilCheck.setState (false);
            washerFluid.setState (false);
            shieldClean.setState (false);
        }
        if (e.getSource () == exitBut) //Provides a goodbye message, quits.
        {
            //Insert some JDialog
            JOptionPane.showMessageDialog (null, "Thank you for visiting Mohamdu's Gas Station!");
            System.exit (0);
        }
        if (e.getSource () == gasCalc) //Calculates gas, sets options variables, calls sets the total screen. Buggy.
        {
            if (gold.isSelected ())
                gradeMult = 1.5;
            else if (silver.isSelected ())
                gradeMult = 1.25;
            else if (bronze.isSelected ())
                gradeMult = 1;
            try //Catches any non-number input.
            {
                litres = Double.parseDouble (litresField.getText ());
            }
            catch (NumberFormatException event)
            {
                JOptionPane.showMessageDialog (null, "Please do not enter any unnecessary symbols, numbers only");
                litresField.setText ("0");
            }
            if (litres > 0)
            {
                gasTotal = litres * 0.8 * gradeMult;
                if (fullServe.isSelected ())
                    gasTotal += 10;
                gasTotal = roundUp (gasTotal);
                if (litres > 0)
                    fuelYes.setSelected (true);
                else if (litres == 0)
                    fuelNo.setSelected (true);
                setTotal ();
                JOptionPane.showMessageDialog (null, "You're gas subtotal has come to $" + gasTotal + ".\n" + "Check the Total page for more information and checkout.");
            }
            //Ensures that negative litres are paid for...
            else if (litres < 0)
            {
                JOptionPane.showMessageDialog (null, "You're GIVING us gas? Why thank you :D");
                litres = 0.000001;
            }
            else if (litres == 0)
                JOptionPane.showMessageDialog (null, "You did not purchase any gas. Please purchase gas or stop loitering and leave.");

        }
        //These next two 'ifs' lock the 'Fuel Purchased' choice to be in the appropriate state
        if (e.getSource () == fuelYes)
        {
            if (gasTotal == 0)
                fuelNo.setSelected (true);
        }
        if (e.getSource () == fuelNo)
            if (gasTotal > 0)
                fuelYes.setSelected (true);
        if (e.getSource () == washCalc) //Calculates pricing for the car wash
        {
            if (fuelYes.isSelected ())
                washTotal = 20;
            else if (fuelNo.isSelected ())
                washTotal = 30;
            washTotal += washType;
            washPrice.setText ("$" + washTotal);
            setTotal ();
        }
        if (e.getSource () == gasClr) //Resets the gas bar values if pushed.
        {
            gasTotal = 0;
            litres = 0;
            litresField.setText ("0.0");
            gold.setSelected (true);
            selfServe.setSelected (true);
            fuelNo.setSelected (true);
            shieldClean.setState (false);
            washerFluid.setState (false);
            oilCheck.setState (false);
            setTotal ();
        }
        if (e.getSource () == washClr) //Resets car wash values if pushed.
        {
            washTotal = 0;
            washPrice.setText ("$" + washTotal);
            regWash.setState (true);
            washType = 10;
            setTotal ();
        }
        if (e.getSource () == restartBut) //Resets EVERYTHING if pushed.
        {
            litres = 0;
            washTotal = 0;
            gasTotal = 0;
            litresField.setText ("" + litres);
            washPrice.setText ("$" + washTotal);
            gold.setSelected (true);
            selfServe.setSelected (true);
            fuelNo.setSelected (true);
            regWash.setState (true);
            noneSelected = true;
            oilCheck.setState (false);
            washerFluid.setState (false);
            shieldClean.setState (false);
            gasOptString = "No options.";
            setTotal ();
        }
        if (e.getSource () == feesBut) //Says thank you, closes window, creates new window. Pretty buggy.
        {
            JOptionPane.showMessageDialog (null, "We kindly appreciate your service!");
            dispose ();
            new GasStation ();
        }
    }


    //An attempt at a logo...
    // public void paint (Graphics g)
    // {
    //     try
    //     {
    //         logo = getImage (getDocumentBase (), "logo.gif");
    //         g.drawImage (logo, 140, 160, size ().width - 290, size ().height - 290, this);
    //     }
    //     catch (Exception e)
    //     {
    //     }
    // }


    public void setTotal ()  //Set the total screen properties - works well for on the fly calculations and such
    {
        subTotal = washTotal + gasTotal;
        netTotal = roundUp (subTotal * 1.13);
        //Checks to see which options were chosen for full serve
        if (noneSelected == true)
            gasOptString = "No options.";
        else if (noneSelected == false)
            gasOptString = (oilCheckString + washerFluidString + shieldCleanString);
        //Sets values
        gasTotalField.setText ("$" + gasTotal);
        washTotalField.setText ("$" + washTotal);
        netTotalField.setText ("$" + netTotal);
        subTotalField.setText ("$" + subTotal);
        gasOptField.setText (gasOptString);
        //Checks to see if car wash was chosen, sets appropriate values
        if (washTotal > 0)
            washOptField.setText (washOptString);
        if (washTotal == 0)
            washOptField.setText ("None.");
    }


    public void totalScreen ()  //Set up the total screen
    {
        //Initialize the panel, set panel for removal and replacement.
        Panel x = new Panel ();
        y = x;
        x.setLayout (new GridLayout (8, 1));
        x.add (totalTitle);
        //set up the Fuel Total panel
        Panel fuelOutput = new Panel ();
        fuelOutput.setLayout (new GridLayout (1, 2));
        fuelOutput.add (gasTotalLabel);
        fuelOutput.add (gasTotalField);
        x.add (fuelOutput);
        //set up the Wash Total panel
        Panel washOutput = new Panel ();
        washOutput.setLayout (new GridLayout (1, 2));
        washOutput.add (washTotalLabel);
        washOutput.add (washTotalField);
        x.add (washOutput);
        //set up the Gas Option panel
        Panel gasOptPan = new Panel ();
        gasOptPan.setLayout (new GridLayout (1, 2));
        gasOptPan.add (gasOptLabel);
        gasOptPan.add (gasOptField);
        x.add (gasOptPan);
        //set up the wash Option panel
        Panel washOptPan = new Panel ();
        washOptPan.setLayout (new GridLayout (1, 2));
        washOptPan.add (washOptLabel);
        washOptPan.add (washOptField);
        x.add (washOptPan);
        //set up the Subtotal panel
        Panel subOutput = new Panel ();
        subOutput.setLayout (new GridLayout (1, 2));
        subOutput.add (subTotalLabel);
        subOutput.add (subTotalField);
        x.add (subOutput);
        //set up the Net Total panel
        Panel netOutput = new Panel ();
        netOutput.setLayout (new GridLayout (1, 2));
        netOutput.add (netTotalLabel);
        netOutput.add (netTotalField);
        x.add (netOutput);
        //set up the total buttons panel
        Panel totalButPan = new Panel ();
        totalButPan.setLayout (new GridLayout (1, 2));
        totalButPan.add (feesBut);
        totalButPan.add (restartBut);
        x.add (totalButPan);
        container.add (x);
        validate ();
        setVisible (true);
    }


    public double roundUp (double num)  //Some quick and dirty rounding
    {
        num = (Math.round (100 * num));
        num = num / 100;
        return num;
    }


    public void itemStateChanged (ItemEvent e)  //The Item Listener response method
    {
        //Locks the full serve options
        if (fullServe.isSelected () == false)
        {
            oilCheck.setState (false);
            washerFluid.setState (false);
            shieldClean.setState (false);
        }
        if (regWash.getState ())
        {
            washType = 10;
            washOptString = "Regular Wash";
        }
        if (waxWash.getState ())
        {
            washType = 30;
            washOptString = "Wax and wash";
        }
        if (oilCheck.getState ())
        {
            oilCheckString = "Oil Check, ";
            noneSelected = false;
        }
        if (oilCheck.getState () == false)
            oilCheckString = "";
        if (washerFluid.getState ())
        {
            washerFluidString = "Fluid Check, ";
            noneSelected = false;
        }
        if (washerFluid.getState () == false)
            washerFluidString = "";
        if (shieldClean.getState ())
        {
            shieldCleanString = "Windshield Cleaned.";
            noneSelected = false;
        }
        if (shieldClean.getState () == false)
            shieldCleanString = "";
        //Makes sure at least one option is selected, otherwise just sets "no options"
        if ((shieldClean.getState () == false) && (oilCheck.getState () == false) && (washerFluid.getState () == false))
            noneSelected = true;
    }
}