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This auto-formats all *.dart files in the repository outside of the `engine` subdirectory and enforces that these files stay formatted with a presubmit check. **Reviewers:** Please carefully review all the commits except for the one titled "formatted". The "formatted" commit was auto-generated by running `dev/tools/format.sh -a -f`. The other commits were hand-crafted to prepare the repo for the formatting change. I recommend reviewing the commits one-by-one via the "Commits" tab and avoiding Github's "Files changed" tab as it will likely slow down your browser because of the size of this PR. --------- Co-authored-by: Kate Lovett <katelovett@google.com> Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
102 lines
3.0 KiB
Dart
102 lines
3.0 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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/// Flutter code sample for [showDatePicker].
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void main() => runApp(const DatePickerApp());
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class DatePickerApp extends StatelessWidget {
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const DatePickerApp({super.key});
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@override
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Widget build(BuildContext context) {
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return const MaterialApp(
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restorationScopeId: 'app',
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home: DatePickerExample(restorationId: 'main'),
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);
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}
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}
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class DatePickerExample extends StatefulWidget {
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const DatePickerExample({super.key, this.restorationId});
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final String? restorationId;
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@override
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State<DatePickerExample> createState() => _DatePickerExampleState();
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}
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/// RestorationProperty objects can be used because of RestorationMixin.
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class _DatePickerExampleState extends State<DatePickerExample> with RestorationMixin {
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// In this example, the restoration ID for the mixin is passed in through
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// the [StatefulWidget]'s constructor.
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@override
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String? get restorationId => widget.restorationId;
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final RestorableDateTime _selectedDate = RestorableDateTime(DateTime(2021, 7, 25));
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late final RestorableRouteFuture<DateTime?> _restorableDatePickerRouteFuture =
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RestorableRouteFuture<DateTime?>(
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onComplete: _selectDate,
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onPresent: (NavigatorState navigator, Object? arguments) {
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return navigator.restorablePush(
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_datePickerRoute,
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arguments: _selectedDate.value.millisecondsSinceEpoch,
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);
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},
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);
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@pragma('vm:entry-point')
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static Route<DateTime> _datePickerRoute(BuildContext context, Object? arguments) {
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return DialogRoute<DateTime>(
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context: context,
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builder: (BuildContext context) {
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return DatePickerDialog(
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restorationId: 'date_picker_dialog',
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initialEntryMode: DatePickerEntryMode.calendarOnly,
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initialDate: DateTime.fromMillisecondsSinceEpoch(arguments! as int),
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firstDate: DateTime(2021),
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lastDate: DateTime(2022),
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);
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},
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);
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}
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@override
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void restoreState(RestorationBucket? oldBucket, bool initialRestore) {
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registerForRestoration(_selectedDate, 'selected_date');
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registerForRestoration(_restorableDatePickerRouteFuture, 'date_picker_route_future');
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}
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void _selectDate(DateTime? newSelectedDate) {
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if (newSelectedDate != null) {
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setState(() {
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_selectedDate.value = newSelectedDate;
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(
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'Selected: ${_selectedDate.value.day}/${_selectedDate.value.month}/${_selectedDate.value.year}',
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),
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),
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);
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});
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}
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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body: Center(
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child: OutlinedButton(
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onPressed: () {
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_restorableDatePickerRouteFuture.present();
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},
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child: const Text('Open Date Picker'),
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),
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),
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);
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}
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}
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