dev/a11y_assessments/lib/use_cases/range_slider.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 RangeSliderUseCase extends UseCase {
  RangeSliderUseCase() : super(useCaseCategory: UseCaseCategory.additional);

  @override
  String get name => 'RangeSlider';

  @override
  String get route => '/range-slider';

  @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> {
  RangeValues _currentRangeValues = const RangeValues(20, 60);

  String pageTitle = getUseCaseName(RangeSliderUseCase());

  @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: RangeSlider(
          values: _currentRangeValues,
          max: 100,
          divisions: 5,
          labels: RangeLabels(
            _currentRangeValues.start.round().toString(),
            _currentRangeValues.end.round().toString(),
          ),
          onChanged: (RangeValues values) {
            setState(() {
              _currentRangeValues = values;
            });
          },
        ),
      ),
    );
  }
}