vanilla_state

Description:

vanilla state

A very simple way to manage immutable state in flutter without having too much dependencies
Features #
Has the following

State management: VanillaNotifier
State listener widgets: VanillaListener, VanillaBuilder
VanillaNotifier dependency injection widget: InheritedVanilla
Helper utils for making immutable state management easier and faster: EqualityChecker,
StateWithStatus, VanillaUtilsMixin

Getting started #
dependencies:
vanilla_state: ^1.0.0
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or
flutter pub add vanilla_state
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import 'package:vanilla_state/vanilla_state.dart';

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Usage #
import 'package:flutter/material.dart';
import 'package:vanilla_state/vanilla_state.dart';

void main() {
runApp(const MyApp());
}

class CounterNotifier extends VanillaNotifier<int> {
CounterNotifier() : super(0);

void increment() {
state = state + 1;
}

void decrement() {
state = state - 1;
}
}

class MyApp extends StatelessWidget {
const MyApp({super.key});

@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
),
home: InheritedVanilla<CounterNotifier>(
createNotifier: () => CounterNotifier(),
child: const MyHomePage(title: 'Flutter Demo Home Page'),
),
);
}
}

class MyHomePage extends StatelessWidget {
const MyHomePage({super.key, required this.title});

final String title;

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: Theme
.of(context)
.colorScheme
.inversePrimary,
title: Text(title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const Text(
'You have pushed the button this many times:',
),
VanillaBuilder<CounterNotifier, int>(
builder: (context, state) {
return Text(
'$state',
style: Theme
.of(context)
.textTheme
.headlineMedium,
);
},
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: context
.read<CounterNotifier>()
.increment,
tooltip: 'Increment',
child: const Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}

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Additional information #
To create issues, prs or otherwise contribute in anyway check out
the package repository home