Denis Bowen 5a87890277
add autofocus to fix a11y issue with dialog (#152637)
Add autofocus=true to first TextButton in dialog so that focus automatically goes to an interactive element when dialog is opened.

Before: https://screencast.googleplex.com/cast/NTYxNTczMTk2MDk3MTI2NHxlMjAyOTMzZi1lNw
After: https://screencast.googleplex.com/cast/NTk1NzMxNjYxNTYwMjE3NnxlYWNlM2Q1MC1jYw

fixes b/338656477

NOTE: This would be a good candidate to update the documentation for Dialogs and TextButtons to encourage the user to add autofocus=true on at least one button so that focus automatically goes to an interactive element instead of the actual Dialog element.
2024-08-20 21:25:01 +00:00

71 lines
2.1 KiB
Dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import 'use_cases.dart';
class DialogUseCase extends UseCase {
@override
String get name => 'Dialog';
@override
String get route => '/dialog';
@override
Widget build(BuildContext context) => const _MainWidget();
}
class _MainWidget extends StatelessWidget {
const _MainWidget();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
title: Semantics(headingLevel: 1, child: const Text('Dialog Demo')),
),
body: Center(
child: TextButton(
onPressed: () => showDialog<String>(
context: context,
builder: (BuildContext context) => Dialog(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
mainAxisSize: MainAxisSize.min,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
const Text('This is a typical dialog.'),
const SizedBox(height: 15),
Row(
children: <Widget>[
TextButton(
key: const Key('OK Button'),
autofocus: true,
onPressed: () {
Navigator.pop(context);
},
child: const Text('OK'),
),
TextButton(
onPressed: () {
Navigator.pop(context);
},
child: const Text('Cancel'),
),
],
),
],
),
),
),
),
child: const Text('Show Dialog'),
),
),
);
}
}