calorimeter/lib/utils/calendar_floating_button.dart

import 'package:flutter/material.dart';

class CalendarFloatingButton extends StatelessWidget {
  final DateTime startFromDate;
  final Function(DateTime?) onDateSelected;

  const CalendarFloatingButton(
      {super.key, required this.startFromDate, required this.onDateSelected});

  @override
  Widget build(BuildContext context) {
    return FloatingActionButton(
      onPressed: () async {
        var datePicked = await showDatePicker(
          locale: const Locale('de'),
          context: context,
          initialDate: startFromDate,
          currentDate: DateTime.now(),
          firstDate: DateTime.now().subtract(const Duration(days: 365 * 10)),
          lastDate: DateTime.now().add(const Duration(days: 365 * 10)),
        );

        if (!context.mounted) return;

        onDateSelected(datePicked);
      },
      heroTag: "calendarFAB",
      child: const Icon(Icons.today),
    );
  }
}