/**
* setup a dummy mortgage payment that gives us a large set of values so that the table can resize
* its columns based on what is likely a "worst-case" scenario. this should leave plenty of room
* for real mortgage payments without making the window overly large and yet still reacting to
* local system visual sizes.
*/
private void sizeMortgageTable() {
resetMortgage();
final MortgagePayment p = new MortgagePayment(999999.99, 999999.99, 999999.99, 99999999.99);
paymentsModel.setPayments(new MortgagePayment[] {p});
paymentsTable.resizeTableColumns();
paymentsTable.limitTableViewport(VISIBLE_PAYMENT_TABLE_ROWS, true, false);
resetMortgage();
}
/** Creates all of the UI components used by this application. */
private void createComponents() {
// the data entry fields need their focus watched...
final FocusWatcher focusWatcher = new FocusWatcher();
// create the label and field for the mortgage principal amount
fieldPrincipal = new JTextField();
fieldPrincipal.addFocusListener(focusWatcher);
fieldPrincipal.setColumns(FIELD_COLUMNS);
labelPrincipal = new JLabel(LABEL_PRINCIPAL);
labelPrincipal.setLabelFor(fieldPrincipal);
// create the label and field for the mortgage terms combo-box/list
fieldMortgageChoices = new JComboBox();
fieldMortgageChoices.addActionListener(new FieldActionListener());
labelMortgageChoices = new JLabel(LABEL_MORTGAGE_CHOICES);
labelMortgageChoices.setLabelFor(fieldMortgageChoices);
// create the label and field for the mortgage term period
fieldTerm = new JTextField();
fieldTerm.addFocusListener(focusWatcher);
fieldTerm.setColumns(FIELD_COLUMNS);
labelTerm = new JLabel(LABEL_TERM);
labelTerm.setLabelFor(fieldTerm);
// create the label and field for the mortgage annual interest rate
fieldRate = new JTextField();
fieldRate.addFocusListener(focusWatcher);
fieldRate.setColumns(FIELD_COLUMNS);
labelRate = new JLabel(LABEL_RATE);
labelRate.setLabelFor(fieldRate);
// create the label that will provide the header text for the panel
labelHeader = new JLabel(MSG_HEADER);
// create the label that will provide any mesages to the user,
// including the newly calculated mortgage payment amounts
labelMessage = new JLabel("");
// create a chart used to display the mortgage payment detail; a small
// pixel size is used so our primary window isn't sized too large
paymentsChart = new Chart(320, 240);
paymentsChart.setBorder(BorderFactory.createLineBorder(Color.BLACK));
// TODO
paymentsModel = new MortgagePaymentsTableModel();
paymentsTable = new JTableHelper(paymentsModel);
paymentsTable.setColumnSelectionAllowed(false);
paymentsTable.setRowSelectionAllowed(true);
paymentsTable.setDefaultRenderer(Double.class, new CurrencyRenderer());
// create the button that will allow the user to calculate a mortgage
// payment schedule from the current input
final Action calcAction = new CalcAction();
calcButton = new JButton(calcAction);
getRootPane().setDefaultButton(calcButton);
// set default values for all of the fields to make the user feel cozy
fieldPrincipal.setText(FMT_PRINCIPAL.format(DEFAULT_PRINCIPAL));
fieldRate.setText(FMT_RATE.format(DEFAULT_RATE));
fieldTerm.setText(FMT_TERM.format(DEFAULT_TERM));
// watch the documents of our input fields so that we can reset our
// current mortgage calculate whenever the user changes anything
final DocumentListener docWatcher = new DocumentWatcher();
fieldPrincipal.getDocument().addDocumentListener(docWatcher);
fieldRate.getDocument().addDocumentListener(docWatcher);
fieldTerm.getDocument().addDocumentListener(docWatcher);
}
