dev/a11y_assessments/lib/use_cases/dialog.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 '../utils.dart';
import 'use_cases.dart';

class DialogUseCase extends UseCase {
  @override
  String get name => 'Dialog';

  @override
  String get route => '/dialog';

  @override
  Widget build(BuildContext context) => _MainWidget();
}

class _MainWidget extends StatelessWidget {
  _MainWidget();

  final String pageTitle = getUseCaseName(DialogUseCase());

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Semantics(headingLevel: 1, child: Text('$pageTitle 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'),
        ),
      ),
    );
  }
}