/** 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();
}
}
}
