DatePickerDialog constructor

DatePickerDialog({ Key? key, Jalali? initialDate, required Jalali firstDate, required Jalali lastDate, Jalali? currentDate, PersianDatePickerEntryMode initialEntryMode = PersianDatePickerEntryMode.calendar, PersianSelectableDayPredicate? selectableDayPredicate, String? cancelText, String? confirmText, String? helpText, PersianDatePickerMode initialCalendarMode = PersianDatePickerMode.day, String? errorFormatText, String? errorInvalidText, String? fieldHintText, String? fieldLabelText, TextInputType? keyboardType, String? restorationId, ValueChanged<PersianDatePickerEntryMode>? onDatePickerModeChange, Icon? switchToInputEntryModeIcon, Icon? switchToCalendarEntryModeIcon, })

A Material-style date picker dialog.

Implementation

DatePickerDialog({
  super.key,
  Jalali? initialDate,
  required Jalali firstDate,
  required Jalali lastDate,
  Jalali? currentDate,
  this.initialEntryMode = PersianDatePickerEntryMode.calendar,
  this.selectableDayPredicate,
  this.cancelText,
  this.confirmText,
  this.helpText,
  this.initialCalendarMode = PersianDatePickerMode.day,
  this.errorFormatText,
  this.errorInvalidText,
  this.fieldHintText,
  this.fieldLabelText,
  this.keyboardType,
  this.restorationId,
  this.onDatePickerModeChange,
  this.switchToInputEntryModeIcon,
  this.switchToCalendarEntryModeIcon,
})  : initialDate =
          initialDate == null ? null : PersianDateUtils.dateOnly(initialDate),
      firstDate = PersianDateUtils.dateOnly(firstDate),
      lastDate = PersianDateUtils.dateOnly(lastDate),
      currentDate = PersianDateUtils.dateOnly(currentDate ?? Jalali.now()) {
  assert(
    !this.lastDate.isBefore(this.firstDate),
    'lastDate ${this.lastDate} must be on or after firstDate ${this.firstDate}.',
  );
  assert(
    initialDate == null || !this.initialDate!.isBefore(this.firstDate),
    'initialDate ${this.initialDate} must be on or after firstDate ${this.firstDate}.',
  );
  assert(
    initialDate == null || !this.initialDate!.isAfter(this.lastDate),
    'initialDate ${this.initialDate} must be on or before lastDate ${this.lastDate}.',
  );
  assert(
    selectableDayPredicate == null ||
        initialDate == null ||
        selectableDayPredicate!(this.initialDate!),
    'Provided initialDate ${this.initialDate} must satisfy provided selectableDayPredicate',
  );
}