/**
* Set up the calendar panel with the basic layout and components. These are not date specific.
*/
private void createCalendarComponents() {
// The date panel will hold the calendar and/or the time spinner
JPanel datePanel = new JPanel(new BorderLayout(2, 2));
// Create the calendar if we are displaying a calendar
if ((selectedComponents & DISPLAY_DATE) > 0) {
formatMonth = new SimpleDateFormat("MMM", locale);
formatWeekDay = new SimpleDateFormat("EEE", locale);
// Set up the shared keyboard bindings
setInputMap(WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, inputMap);
setActionMap(actionMap);
// Set up the decrement buttons
yearDecrButton =
new JButton(
new ButtonAction(
"YearDecrButton",
"YearDecrButtonMnemonic",
"YearDecrButtonAccelerator",
"YearDecrButtonImage",
"YearDecrButtonShort",
"YearDecrButtonLong",
YEAR_DECR_BUTTON));
monthDecrButton =
new JButton(
new ButtonAction(
"MonthDecrButton",
"MonthDecrButtonMnemonic",
"MonthDecrButtonAccelerator",
"MonthDecrButtonImage",
"MonthDecrButtonShort",
"MonthDecrButtonLong",
MONTH_DECR_BUTTON));
JPanel decrPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 2, 0));
decrPanel.add(yearDecrButton);
decrPanel.add(monthDecrButton);
// Set up the month/year label
monthYearLabel = new JLabel();
monthYearLabel.setHorizontalAlignment(JLabel.CENTER);
// Set up the increment buttons
monthIncrButton =
new JButton(
new ButtonAction(
"MonthIncrButton",
"MonthIncrButtonMnemonic",
"MonthIncrButtonAccelerator",
"MonthIncrButtonImage",
"MonthIncrButtonShort",
"MonthIncrButtonLong",
MONTH_INCR_BUTTON));
yearIncrButton =
new JButton(
new ButtonAction(
"YearIncrButton",
"YearIncrButtonMnemonic",
"YearIncrButtonAccelerator",
"YearIncrButtonImage",
"YearIncrButtonShort",
"YearIncrButtonLong",
YEAR_INCR_BUTTON));
JPanel incrPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 2, 0));
incrPanel.add(monthIncrButton);
incrPanel.add(yearIncrButton);
// Put them all together
JPanel monthYearNavigator = new JPanel(new BorderLayout(2, 2));
monthYearNavigator.add(decrPanel, BorderLayout.WEST);
monthYearNavigator.add(monthYearLabel);
monthYearNavigator.add(incrPanel, BorderLayout.EAST);
// Set up the day panel
JPanel dayPanel = new JPanel(new GridLayout(7, 7));
int firstDay = displayCalendar.getFirstDayOfWeek();
// Get the week day labels. The following technique is used so
// that we can start the calendar on the right day of the week and
// we can get the week day labels properly localized
Calendar temp = Calendar.getInstance(locale);
temp.set(2000, Calendar.MARCH, 15);
while (temp.get(Calendar.DAY_OF_WEEK) != firstDay) {
temp.add(Calendar.DATE, 1);
}
dayOfWeekLabels = new JLabel[7];
for (int i = 0; i < 7; i++) {
Date date = temp.getTime();
String dayOfWeek = formatWeekDay.format(date);
dayOfWeekLabels[i] = new JLabel(dayOfWeek);
dayOfWeekLabels[i].setHorizontalAlignment(JLabel.CENTER);
dayPanel.add(dayOfWeekLabels[i]);
temp.add(Calendar.DATE, 1);
}
// Add all the day buttons
dayButtons = new JToggleButton[6][7];
dayGroup = new ButtonGroup();
DayListener dayListener = new DayListener();
for (int row = 0; row < 6; row++) {
for (int day = 0; day < 7; day++) {
dayButtons[row][day] = new JToggleButton();
dayButtons[row][day].addItemListener(dayListener);
dayPanel.add(dayButtons[row][day]);
dayGroup.add(dayButtons[row][day]);
}
}
// We add this special button to the button group, so we have a
// way of unselecting all the visible buttons
offScreenButton = new JToggleButton("X");
dayGroup.add(offScreenButton);
// Combine the navigators and days
datePanel.add(monthYearNavigator, BorderLayout.NORTH);
datePanel.add(dayPanel);
}
// Create the time spinner field if we are displaying the time
if ((selectedComponents & DISPLAY_TIME) > 0) {
// Create the time component
spinnerDateModel = new SpinnerDateModel();
spinnerDateModel.addChangeListener(new TimeListener());
spinner = new JSpinner(spinnerDateModel);
JSpinner.DateEditor dateEditor = new JSpinner.DateEditor(spinner, timePattern);
dateEditor.getTextField().setEditable(false);
dateEditor.getTextField().setHorizontalAlignment(JTextField.CENTER);
spinner.setEditor(dateEditor);
// Set the input/action maps for the spinner. (Only BACK_SPACE
// seems to work!)
InputMap sim = new InputMap();
sim.put(KeyStroke.getKeyStroke("BACK_SPACE"), "setNullDate");
sim.put(KeyStroke.getKeyStroke("DELETE"), "setNullDate");
sim.setParent(spinner.getInputMap(WHEN_ANCESTOR_OF_FOCUSED_COMPONENT));
ActionMap sam = new ActionMap();
sam.put(
"setNullDate",
new AbstractAction("setNullDate") {
public void actionPerformed(ActionEvent e) {
JCalendar.this.setDate(null);
}
});
sam.setParent(spinner.getActionMap());
spinner.setInputMap(WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, sim);
spinner.setActionMap(sam);
// Create a special panel for the time display
JPanel timePanel = new JPanel(new FlowLayout(FlowLayout.CENTER, 2, 2));
timePanel.add(spinner);
// Now add it to the bottom
datePanel.add(timePanel, BorderLayout.SOUTH);
}
setLayout(new BorderLayout(2, 2));
add(datePanel);
// Add today's date at the bottom of the calendar/time, if needed
if (isTodayDisplayed) {
Object[] args = {new Date()};
String todaysDate = MessageFormat.format(bundle.getString("Today"), args);
todaysLabel = new JLabel(todaysDate);
todaysLabel.setHorizontalAlignment(JLabel.CENTER);
// Add today's date at the very bottom
add(todaysLabel, BorderLayout.SOUTH);
}
}
/** Update the calendar panel to display the currently selected date. */
private void updateCalendarComponents() {
if ((selectedComponents & DISPLAY_DATE) > 0) {
// Unselect all visible dates
offScreenButton.setSelected(true);
// Get the display date. We only need the month and year
displayMonth = displayCalendar.get(Calendar.MONTH);
displayYear = displayCalendar.get(Calendar.YEAR);
// Get the localized display month name and year
String month = formatMonth.format(displayCalendar.getTime());
String year = Integer.toString(displayYear);
{
Object[] args = {month, year};
monthYearLabel.setText(MessageFormat.format(bundle.getString("MonthYearTitle"), args));
}
// If the month or year have changed, we need to re-lay out
// the days. Otherwise, we don't
if (!month.equals(lastMonth) || !year.equals(lastYear)) {
// Create a temporary calendar that we will use to
// determine where day 1 goes and how many days there are
// in this month
Calendar temp = (Calendar) displayCalendar.clone();
temp.set(Calendar.DATE, 1);
int dayOfWeek = temp.get(Calendar.DAY_OF_WEEK);
int firstDay = temp.getFirstDayOfWeek();
// Determine how many blank slots occur before day 1 of this
// month
int dayPtr;
for (dayPtr = 0; dayPtr < 7; dayPtr++) {
int curDay = ((firstDay - 1) + dayPtr) % 7 + 1;
if (curDay != dayOfWeek) {
dayButtons[0][dayPtr].setText("");
dayButtons[0][dayPtr].setEnabled(false);
} else {
break;
}
}
// Determine the number of days in this month
int maxDays = temp.getActualMaximum(Calendar.DATE);
// Fill in the days
int row = 0;
for (int day = 1; day <= maxDays; day++) {
dayButtons[row][dayPtr].setText(Integer.toString(day));
dayButtons[row][dayPtr].setEnabled(true);
// If this is the selected date, select the button;
// otherwise, deselect it
if (day == selectedDay && displayMonth == selectedMonth && displayYear == selectedYear) {
dayButtons[row][dayPtr].setSelected(true);
} else {
dayButtons[row][dayPtr].getModel().setSelected(false);
}
// Wrap as needed
dayPtr = (dayPtr + 1) % 7;
if (dayPtr == 0) row++;
}
// Set the blanks slots after the last day
while (row < 6) {
dayButtons[row][dayPtr].setText("");
dayButtons[row][dayPtr].setEnabled(false);
dayButtons[row][dayPtr].getModel().setSelected(false);
dayPtr = (dayPtr + 1) % 7;
if (dayPtr == 0) row++;
}
}
}
// Update the time component, if displayed
if ((selectedComponents & DISPLAY_TIME) > 0) {
// If no date is selected, we set the date used by the time
// field to today @ noon. We also make the field insensitive
// -- the user must pick a non-null date before being able to
// change the time (unless all we have is a time field)
if (isNullDate) {
Calendar temp = (Calendar) selectedCalendar.clone();
temp.setTime(new Date());
temp.set(Calendar.HOUR, 12);
temp.set(Calendar.MINUTE, 0);
temp.set(Calendar.SECOND, 0);
spinnerDateModel.setValue(temp.getTime());
spinner.setEnabled((selectedComponents & DISPLAY_DATE) == 0);
}
// If a date is selected, use it
else {
spinner.setEnabled(JCalendar.this.isEnabled());
spinnerDateModel.setValue(selectedCalendar.getTime());
spinnerDateModel.setStart(null);
spinnerDateModel.setEnd(null);
spinner.revalidate();
}
}
}
