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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>
105 lines
2.6 KiB
Dart
105 lines
2.6 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 'dart:ui';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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/// Flutter code sample for [ServicesBinding.handleRequestAppExit].
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void main() {
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runApp(const ApplicationExitExample());
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}
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class ApplicationExitExample extends StatelessWidget {
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const ApplicationExitExample({super.key});
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@override
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Widget build(BuildContext context) {
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return const MaterialApp(home: Scaffold(body: Body()));
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}
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}
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class Body extends StatefulWidget {
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const Body({super.key});
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@override
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State<Body> createState() => _BodyState();
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}
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class _BodyState extends State<Body> with WidgetsBindingObserver {
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bool _shouldExit = false;
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String lastResponse = 'No exit requested yet';
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@override
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void initState() {
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super.initState();
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WidgetsBinding.instance.addObserver(this);
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}
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@override
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void dispose() {
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WidgetsBinding.instance.removeObserver(this);
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super.dispose();
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}
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Future<void> _quit() async {
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final AppExitType exitType = _shouldExit ? AppExitType.required : AppExitType.cancelable;
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setState(() {
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lastResponse = 'App requesting ${exitType.name} exit';
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});
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await ServicesBinding.instance.exitApplication(exitType);
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}
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@override
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Future<AppExitResponse> didRequestAppExit() async {
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final AppExitResponse response = _shouldExit ? AppExitResponse.exit : AppExitResponse.cancel;
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setState(() {
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lastResponse = 'App responded ${response.name} to exit request';
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});
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return response;
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}
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void _radioChanged(bool? value) {
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value ??= true;
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if (_shouldExit == value) {
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return;
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}
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setState(() {
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_shouldExit = value!;
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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 Center(
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child: SizedBox(
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width: 300,
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: <Widget>[
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RadioListTile<bool>(
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title: const Text('Do Not Allow Exit'),
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groupValue: _shouldExit,
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value: false,
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onChanged: _radioChanged,
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),
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RadioListTile<bool>(
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title: const Text('Allow Exit'),
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groupValue: _shouldExit,
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value: true,
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onChanged: _radioChanged,
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),
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const SizedBox(height: 30),
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ElevatedButton(onPressed: _quit, child: const Text('Quit')),
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const SizedBox(height: 30),
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Text(lastResponse),
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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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