Flutter Counter

name: flutter_counter
description: A new Flutter project.
version: 1.0.0+1
publish_to: none

environment:
  sdk: ">=3.10.0 <4.0.0"

dependencies:
  bloc: ^9.0.0
  flutter:
    sdk: flutter
  flutter_bloc: ^9.1.0

dev_dependencies:
  bloc_lint: ^0.3.0
  bloc_test: ^10.0.0
  flutter_test:
    sdk: flutter
  integration_test:
    sdk: flutter
  mocktail: ^1.0.0

flutter:
  uses-material-design: true

import 'package:bloc/bloc.dart';

/// {@template counter_observer}
/// [BlocObserver] for the counter application which
/// observes all state changes.
/// {@endtemplate}
class CounterObserver extends BlocObserver {
  /// {@macro counter_observer}
  const CounterObserver();

  @override
  void onChange(BlocBase<dynamic> bloc, Change<dynamic> change) {
    super.onChange(bloc, change);
    // ignore: avoid_print
    print('${bloc.runtimeType} $change');
  }
}

import 'package:bloc/bloc.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_counter/app.dart';
import 'package:flutter_counter/counter_observer.dart';

void main() {
  Bloc.observer = const CounterObserver();
  runApp(const CounterApp());
}

import 'package:flutter/material.dart';
import 'package:flutter_counter/counter/counter.dart';

/// {@template counter_app}
/// A [MaterialApp] which sets the `home` to [CounterPage].
/// {@endtemplate}
class CounterApp extends MaterialApp {
  /// {@macro counter_app}
  const CounterApp({super.key}) : super(home: const CounterPage());
}

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_counter/counter/counter.dart';

/// {@template counter_page}
/// A [StatelessWidget] which is responsible for providing a
/// [CounterCubit] instance to the [CounterView].
/// {@endtemplate}
class CounterPage extends StatelessWidget {
  /// {@macro counter_page}
  const CounterPage({super.key});

  @override
  Widget build(BuildContext context) {
    return BlocProvider(
      create: (_) => CounterCubit(),
      child: const CounterView(),
    );
  }
}

import 'package:bloc/bloc.dart';

/// {@template counter_cubit}
/// A [Cubit] which manages an [int] as its state.
/// {@endtemplate}
class CounterCubit extends Cubit<int> {
  /// {@macro counter_cubit}
  CounterCubit() : super(0);

  /// Add 1 to the current state.
  void increment() => emit(state + 1);

  /// Subtract 1 from the current state.
  void decrement() => emit(state - 1);
}

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_counter/counter/counter.dart';

/// {@template counter_view}
/// A [StatelessWidget] which reacts to the provided
/// [CounterCubit] state and notifies it in response to user input.
/// {@endtemplate}
class CounterView extends StatelessWidget {
  /// {@macro counter_view}
  const CounterView({super.key});

  @override
  Widget build(BuildContext context) {
    final textTheme = Theme.of(context).textTheme;
    return Scaffold(
      body: Center(
        child: BlocBuilder<CounterCubit, int>(
          builder: (context, state) {
            return Text('$state', style: textTheme.displayMedium);
          },
        ),
      ),
      floatingActionButton: Column(
        mainAxisAlignment: MainAxisAlignment.end,
        crossAxisAlignment: CrossAxisAlignment.end,
        children: <Widget>[
          FloatingActionButton(
            key: const Key('counterView_increment_floatingActionButton'),
            child: const Icon(Icons.add),
            onPressed: () => context.read<CounterCubit>().increment(),
          ),
          const SizedBox(height: 8),
          FloatingActionButton(
            key: const Key('counterView_decrement_floatingActionButton'),
            child: const Icon(Icons.remove),
            onPressed: () => context.read<CounterCubit>().decrement(),
          ),
        ],
      ),
    );
  }
}

export 'counter_page.dart';
export 'counter_view.dart';

export 'cubit/counter_cubit.dart';
export 'view/view.dart';