Single value cubit

Just a simple cubit with a state setter. Helpful with inputs, scrolls and single flags scenarios.

TextCubitBinder Example

The TextCubitBinder widget provides two-way binding between a SingleValueCubit<String> and a TextEditingController:

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:single_value_cubit/single_value_cubit.dart';

class LoginInputCubit extends SingleValueCubit<String> {
  LoginInputCubit() : super('');
}

class MyForm extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return BlocProvider(
      create: (_) => LoginInputCubit(),
      child: Builder(
        builder: (context) {
          return TextCubitBinder(
            cubit: context.read<LoginInputCubit>(),
            builder: (context, controller) {
              return TextField(
                controller: controller,
                decoration: InputDecoration(
                  labelText: 'Login',
                  hintText: 'Enter your login',
                ),
              );
            },
          );
        },
      ),
    );
  }
}

The binding works both ways:

• Changes in the TextField automatically update the cubit state
• Changes to the cubit (e.g., context.read<LoginInputCubit>().set('john_doe')) automatically update the text field