mirror of
https://github.com/flutter/flutter.git
synced 2025-06-03 00:51:18 +00:00
85b3d97673
Adds Semantic Widget to wrap the contents of each page's AppBar title attribute and adds header: true and headingLevel: 1 as Semantic attributes so the content of the title is compiled as an h1 tag to meet accessibility guidelines that each page must have a h1 tag present. Also updates the test cases for the home page and each use case page to check for its respective h1. [Before Screenshot - Accessibility Assessments Home Page](https://screenshot.googleplex.com/4i9LuiGwvLnEcZ8) [Before Screenshot - Checkbox List Title -- note: each use case page is missing an h1](https://screenshot.googleplex.com/3qQjfqvAMTehRsm) [After Screenshot - Accessibility Assessments Home Page](https://screenshot.googleplex.com/APSJJXBmwNBP35m) [After Screenshot - Checkbox List Title-- note: change is similar across each Accessibility use case page](https://screenshot.googleplex.com/6EGgZnTusEgeN5L) Fixes b/338035526
74 lines
2.0 KiB
Dart
74 lines
2.0 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 MaterialBannerUseCase extends UseCase {
|
|
@override
|
|
String get name => 'MaterialBanner';
|
|
|
|
@override
|
|
String get route => '/material_banner';
|
|
|
|
@override
|
|
Widget build(BuildContext context) => const MainWidget();
|
|
}
|
|
|
|
class MainWidget extends StatefulWidget {
|
|
const MainWidget({super.key});
|
|
|
|
@override
|
|
State<MainWidget> createState() => MainWidgetState();
|
|
}
|
|
|
|
class MainWidgetState extends State<MainWidget> {
|
|
double currentSliderValue = 20;
|
|
ScaffoldFeatureController<MaterialBanner, MaterialBannerClosedReason>?
|
|
controller;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
VoidCallback? onPress;
|
|
if (controller == null) {
|
|
onPress = () {
|
|
setState(() {
|
|
controller = ScaffoldMessenger.of(context).showMaterialBanner(
|
|
MaterialBanner(
|
|
padding: const EdgeInsets.all(20),
|
|
content: const Text('Hello, I am a Material Banner'),
|
|
leading: const Icon(Icons.agriculture_outlined),
|
|
backgroundColor: Colors.green,
|
|
actions: <Widget>[
|
|
TextButton(
|
|
onPressed: () {
|
|
controller!.close();
|
|
setState(() {
|
|
controller = null;
|
|
});
|
|
},
|
|
child: const Text('DISMISS'),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
});
|
|
};
|
|
}
|
|
return Scaffold(
|
|
appBar: AppBar(
|
|
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
|
|
title: Semantics(headingLevel: 1, child: const Text('MaterialBanner Demo')),
|
|
),
|
|
body: Center(
|
|
child: ElevatedButton(
|
|
onPressed: onPress,
|
|
child: const Text('Show a MaterialBanner'),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|