POSFramepublic class POSFrame extends JFrame | This is a sample that was based on the JMCU CashSale component built into the Together tool. This presents a simple GUI and
shows how we can tie it into the PD classes. |
| Fields Summary |
|---|
| ProblemDomain.CashSale | currentSale | | ProblemDomain.ProductDesc[] | products | | private final String[] | colNames | | private static final int | ADDED_DETAIL | | private static final int | REMOVED_DETAIL | | private static final String[] | cashiers | | NumberFormat | currencyFormat | | JMenuBar | menuBar1 | | JMenu | menuFile | | JMenuItem | menuFileExit | | JMenu | menuHelp | | JMenuItem | menuHelpAbout | | JToolBar | toolBar | | JButton | jButtonHelp | | ImageIcon | imageHelp | | JLabel | statusBar | | BorderLayout | borderLayout1 | | JScrollPane | jScrollPaneDetails | | JTable | jTableSaleDetails | | JPanel | jPanel1 | | BorderLayout | borderLayout2 | | JPanel | jPanelScan | | JButton | jButtonScan | | JTextField | jTextFieldItem | | JPanel | jPanelDetails | | JButton | jButtonNewSale | | JButton | jButtonCancel | | JPanel | jPanelCompleteSale | | JButton | jButtonPayment | | JButton | jButtonTotal | | BorderLayout | borderLayout3 | | JTextField | jTextFieldSubTotal | | GridLayout | gridLayout1 | | JLabel | jLabel1 | | JLabel | jLabel2 | | JTextField | jTextFieldTax | | JLabel | jLabel3 | | JTextField | jTextFieldPayment | | JTextField | jTextFieldTotal | | JTextField | jTextFieldChange | | JLabel | jLabel4 | | JLabel | jLabelCashier | | JLabel | jLabel6 | | JLabel | jLabelTimeStamp | | JLabel | jLabel8 |
| Constructors Summary |
|---|
public POSFrame()
//Construct the frame
setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE); //do not hide the frame, maybe the user will press "Cancel"
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
fileExit_actionPerformed(null);
}
});
try {
setUpProducts();
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
|
| Methods Summary |
|---|
| private void | addDetailToTable()
int index = currentSale.getDetailList().size() - 1;
TableDataModel model = (TableDataModel)jTableSaleDetails.getModel();
model.dataChanged(ADDED_DETAIL, index);
| | private void | cancelSale()
newSale();
/*
if ( preCancelCheck() == JOptionPane.OK_OPTION )
{
newSale();
}
else
{
// do nothing
}*/
| | public void | fileExit_actionPerformed(java.awt.event.ActionEvent e)
if (preCancelCheck() == JOptionPane.OK_OPTION) {
System.exit(0);
}
| | public void | helpAbout_actionPerformed(java.awt.event.ActionEvent e)
POSFrame_AboutBox dlg = new POSFrame_AboutBox(this);
Dimension dlgSize = dlg.getPreferredSize();
Dimension frmSize = getSize();
Point loc = getLocation();
dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
dlg.setModal(true);
dlg.show();
| | private void | initButtons()Keep buttons properly grayed out at the start.
jButtonNewSale.setEnabled(true);
jButtonCancel.setEnabled(false);
jButtonScan.setEnabled(true);
jButtonPayment.setEnabled(false);
jButtonTotal.setEnabled(false);
| | private void | initDetailTable()
TableDataModel dataModel = new TableDataModel();
jTableSaleDetails.setModel(dataModel);
jTableSaleDetails.setPreferredScrollableViewportSize(new Dimension(300, 70));
TableColumn column = null;
// {"Item", "Name", "Unit", "Qty", "Price"};
for (int i = 0; i < jTableSaleDetails.getColumnCount(); ++i) {
column = jTableSaleDetails.getColumnModel().getColumn(i);
switch (i) {
case 0: // Item
column.setPreferredWidth(20);
break;
case 1: // Name
column.setPreferredWidth(100);
break;
case 2: // Unit
column.setPreferredWidth(30);
break;
case 3: // Qty
column.setPreferredWidth(20);
break;
case 4: // Price
column.setPreferredWidth(30);
break;
default:
column.setPreferredWidth(50);
break;
} // ENDSWITCH (col)
} // ENDFOR (i)
| | void | jButtonCancel_actionPerformed(java.awt.event.ActionEvent e)
cancelSale();
| | void | jButtonNewSale_actionPerformed(java.awt.event.ActionEvent e)
newSale();
| | void | jButtonPayment_actionPerformed(java.awt.event.ActionEvent e)
makePayment();
| | void | jButtonScan_actionPerformed(java.awt.event.ActionEvent e)
scan();
| | void | jButtonTotal_actionPerformed(java.awt.event.ActionEvent e)
totalSale();
| | private void | jbInit()
try {
imageHelp = new ImageIcon(UserInterface.POSFrame.class.getResource("/UserInterface/help.gif"));
}
catch(Exception e) {
}
this.getContentPane().setLayout(borderLayout1);
this.setSize(new Dimension(459, 396));
this.setTitle("Point Of Sale");
statusBar.setText(" ");
menuFile.setText("File");
menuFileExit.setText("Exit");
menuFileExit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
fileExit_actionPerformed(e);
}
});
menuHelp.setText("Help");
menuHelpAbout.setText("About");
menuHelpAbout.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
helpAbout_actionPerformed(e);
}
});
if (imageHelp != null)
jButtonHelp.setIcon(imageHelp);
jButtonHelp.setToolTipText("Help");
jPanel1.setLayout(borderLayout2);
jButtonScan.setToolTipText("Scan next item");
jButtonScan.setMnemonic('S");
jButtonScan.setText("Scan");
jButtonScan.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButtonScan_actionPerformed(e);
}
});
jTextFieldItem.setPreferredSize(new Dimension(182, 21));
jTextFieldItem.setText("<item>");
jPanelScan.setBorder(BorderFactory.createRaisedBevelBorder());
jTableSaleDetails.setBorder(BorderFactory.createLineBorder(Color.black));
jButtonNewSale.setToolTipText("Start a new sale");
jButtonNewSale.setMnemonic('N");
jButtonNewSale.setText("New Sale");
jButtonNewSale.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButtonNewSale_actionPerformed(e);
}
});
jButtonCancel.setToolTipText("Cancel current sale");
jButtonCancel.setMnemonic('A");
jButtonCancel.setText("Cancel");
jButtonCancel.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButtonCancel_actionPerformed(e);
}
});
jButtonPayment.setFont(new java.awt.Font("Dialog", 1, 12));
jButtonPayment.setToolTipText("Enter payment amount");
jButtonPayment.setMnemonic('P");
jButtonPayment.setText("Payment");
jButtonPayment.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButtonPayment_actionPerformed(e);
}
});
jButtonTotal.setFont(new java.awt.Font("Dialog", 1, 12));
jButtonTotal.setToolTipText("Calculate Total");
jButtonTotal.setMnemonic('T");
jButtonTotal.setText("Total");
jButtonTotal.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButtonTotal_actionPerformed(e);
}
});
jPanelDetails.setLayout(borderLayout3);
jTextFieldSubTotal.setText("0.00");
jTextFieldSubTotal.setHorizontalAlignment(SwingConstants.RIGHT);
jPanelCompleteSale.setLayout(gridLayout1);
gridLayout1.setColumns(2);
gridLayout1.setHgap(3);
gridLayout1.setRows(5);
jLabel1.setFont(new java.awt.Font("Dialog", 1, 12));
jLabel1.setHorizontalAlignment(SwingConstants.RIGHT);
jLabel1.setText("SUBTOTAL:");
jLabel2.setFont(new java.awt.Font("Dialog", 1, 12));
jLabel2.setHorizontalAlignment(SwingConstants.RIGHT);
jLabel2.setText("Tax:");
jLabel3.setText(" ");
jTextFieldTax.setText("0.00");
jTextFieldTax.setHorizontalAlignment(SwingConstants.RIGHT);
jTextFieldPayment.setText("0.00");
jTextFieldPayment.setHorizontalAlignment(SwingConstants.RIGHT);
jTextFieldTotal.setText("0.00");
jTextFieldTotal.setHorizontalAlignment(SwingConstants.RIGHT);
jTextFieldChange.setText("0.00");
jTextFieldChange.setHorizontalAlignment(SwingConstants.RIGHT);
jLabel4.setText(" ");
jLabelCashier.setText(" ");
jLabel6.setText(" ");
jLabelTimeStamp.setText(" ");
jLabel8.setText("Change:");
jLabel8.setFont(new java.awt.Font("Dialog", 1, 12));
jLabel8.setHorizontalAlignment(SwingConstants.RIGHT);
jScrollPaneDetails.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
jScrollPaneDetails.setBorder(BorderFactory.createLineBorder(Color.black));
jPanelDetails.setBackground(Color.yellow);
toolBar.add(jButtonNewSale);
toolBar.add(jButtonCancel);
toolBar.add(jButtonHelp);
menuFile.add(menuFileExit);
menuHelp.add(menuHelpAbout);
menuBar1.add(menuFile);
menuBar1.add(menuHelp);
this.setJMenuBar(menuBar1);
this.getContentPane().add(toolBar, BorderLayout.NORTH);
this.getContentPane().add(statusBar, BorderLayout.SOUTH);
this.getContentPane().add(jPanel1, BorderLayout.CENTER);
jPanel1.add(jPanelScan, BorderLayout.NORTH);
jPanelScan.add(jButtonScan, null);
jPanelScan.add(jTextFieldItem, null);
jPanel1.add(jPanelDetails, BorderLayout.CENTER);
jPanelDetails.add(jScrollPaneDetails, BorderLayout.NORTH);
jScrollPaneDetails.getViewport().add(jTableSaleDetails, null);
jPanel1.add(jPanelCompleteSale, BorderLayout.SOUTH);
jPanelCompleteSale.add(jLabel3, null);
jPanelCompleteSale.add(jLabel1, null);
jPanelCompleteSale.add(jTextFieldSubTotal, null);
jPanelCompleteSale.add(jLabel4, null);
jPanelCompleteSale.add(jLabel2, null);
jPanelCompleteSale.add(jTextFieldTax, null);
jPanelCompleteSale.add(jLabel6, null);
jPanelCompleteSale.add(jButtonTotal, null);
jPanelCompleteSale.add(jTextFieldTotal, null);
jPanelCompleteSale.add(jLabelCashier, null);
jPanelCompleteSale.add(jButtonPayment, null);
jPanelCompleteSale.add(jTextFieldPayment, null);
jPanelCompleteSale.add(jLabelTimeStamp, null);
jPanelCompleteSale.add(jLabel8, null);
jPanelCompleteSale.add(jTextFieldChange, null);
// Initialize Detail Table
initDetailTable();
// Initialize widgets with data
loadGUIWithPD();
// Keep buttons properly grayed out at the start
initButtons();
this.toolBar.getRootPane().setDefaultButton(jButtonScan);
| | private void | loadGUIWithPD()
jTextFieldItem.setText("");
jLabelTimeStamp.setText(DateFormat.getDateInstance().format(currentSale.getTime()));
jLabelCashier.setText(cashiers[(int)(Math.random() * 10.0)]);
jTextFieldSubTotal.setText("");
jTextFieldTax.setText("");
jTextFieldTotal.setText("");
jTextFieldPayment.setText("");
jTextFieldChange.setText("");
jTextFieldChange.setForeground(Color.black);
| | private void | makePayment()
String paymentValue = JOptionPane.showInputDialog("Please enter payment");
// See if input is valid number
try {
NumberFormat numberFormat = NumberFormat.getInstance();
numberFormat.setMinimumFractionDigits(2);
double n = numberFormat.parse(paymentValue).doubleValue();
// Compute change due
BigDecimal change = currentSale.makeCashSale(new BigDecimal(paymentValue));
jTextFieldChange.setText(currencyFormat.format(change));
jTextFieldChange.setForeground(Color.red);
jTextFieldPayment.setText(currencyFormat.format(new BigDecimal(paymentValue)));
// Once payment is made, you can no
// longer cancel or hit payment.
jButtonPayment.setEnabled(false);
jButtonCancel.setEnabled(false);
this.getRootPane().setDefaultButton(jButtonNewSale);
}
catch(ParseException pe) {
JOptionPane.showMessageDialog(null, pe.getMessage(), "Illegal Text Format", JOptionPane.ERROR_MESSAGE);
makePayment();
}
catch(InsuffPaymentException ipe) {
JOptionPane.showMessageDialog(null, ipe.getMessage(), "Insufficient Payment", JOptionPane.ERROR_MESSAGE);
}
| | private void | newSale()Start off with a fresh CashSale object for the transaction. It will reflect the current timestamp and have no details.
if (!currentSale.isCompleted()) {
if (preCancelCheck() != JOptionPane.OK_OPTION) {
return;
}
}
currentSale = new CashSale();
TableDataModel model = (TableDataModel)jTableSaleDetails.getModel();
model.dataChanged(REMOVED_DETAIL, 0);
// Reset widgets
loadGUIWithPD();
initButtons();
| | private int | preCancelCheck()
if (currentSale.isPending()) {
return JOptionPane.showConfirmDialog(null, "OK to Cancel Current Sale?", "Sale Pending",
JOptionPane.OK_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE);
}
else {
return JOptionPane.OK_OPTION;
}
| | private void | scan()Use this to simulate scanning items
int pseudoIndex = (int)(Math.random() * 10.0);
ProductDesc prod = products[pseudoIndex];
jTextFieldItem.setText(prod.getDescription());
CashSaleDetail detail = new CashSaleDetail(prod);
// Now add it to the current sale
currentSale.addSaleDetail(detail);
// And notify the table
addDetailToTable();
jButtonCancel.setEnabled(true);
jButtonTotal.setEnabled(true);
| | private void | setUpProducts()
products = new ProductDesc[10];
products[0] = new ProductDesc("1", "Pepsi 24-pack", "Pepsi 24", new BigDecimal(3.99));
products[1] = new ProductDesc("2", "Lays Ridges", "Lays", new BigDecimal(1.99));
products[2] = new ProductDesc("3", "Vienna Sausages", "Vienna Sausages", new BigDecimal(2.99));
products[3] = new ProductDesc("4", "White Popcorn", "White Popcorn", new BigDecimal(1.29));
products[4] = new ProductDesc("5", "Soy Burgers", "Soy Burger", new BigDecimal(5.99));
products[5] = new ProductDesc("6", "Cat Chow", "Cat Chow", new BigDecimal(9.99));
products[6] = new ProductDesc("7", "Puppy Chow", "Puppy Chow", new BigDecimal(12.99));
products[7] = new ProductDesc("8", "Finch Food", "Finch Food", new BigDecimal(1.59));
products[8] = new ProductDesc("9", "Rice Krispies", "Rice Krispies", new BigDecimal(3.29));
products[9] = new ProductDesc("10", "Fruit Loops", "Fruit Loops", new BigDecimal(3.49));
| | private void | totalSale()
jTextFieldSubTotal.setText(currencyFormat.format(currentSale.calcSubtotal()));
jTextFieldTax.setText(currencyFormat.format(currentSale.calcTax()));
jTextFieldTotal.setText(currencyFormat.format(currentSale.calcTotal()));
// Once you total the sale, you can
// then make a payment. But we'll disable
// the ability to scan in more or re-calc
// total (maybe a bit unrealistic).
jButtonPayment.setEnabled(true);
jButtonTotal.setEnabled(false);
jButtonScan.setEnabled(false);
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