antenna 1.3.1

A lean and flexible state management library for flutter.

A lean, flexible state management library for flutter.

Features

Declare your various events.

You can list all the events that will happen in your app.

Implement your tiny store.

You can store the current state of a particular model separately.

Intercept the side effects.

You should finish all the job with side effects before changing the state.

Keep your stores and effects for a certain period.

You can also specify when your stores and effects start or stop to listen to events.

Getting started

flutter pub add antenna

Usage

Declare your various events.

const increment = "increment";

Implement your tiny store.

final counterStore = createStore<int>(({
  int state = 0,
  dynamic event,
}) {
  if (event == increment) {
    return state + 1;
  }

  if (event == decrement) {
    return state - 1;
  }

  if (event is SetNumber) {
    return event.value;
  }

  return state;
});

Intercept the side effects.

setRandomNumberEffect(event) {
  if (event == random) {
    final value = Random().nextInt(100);

    dispatch(SetNumber(value));
  }
}

Keep your stores and effects for a certain period.

final subscription = connect(counterStore);

final subscription = listen(setRandomNumberEffect);

Antenna manager helps to control your subscriptions by the life cycle.

class _MyCounterState extends State<MyCounter> with AntennaManager {
  @override
  void initState() {
    $connect(counterStore);

    $listen(setRandomNumberEffect);

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            StoreConsumer(
              store: counterStore,
              builder: (context, data) => Text(data.toString()),
            ),
            TextButton(
              onPressed: () => dispatch(increment),
              child: const Text("Increment"),
            ),
            TextButton(
              onPressed: () => dispatch(decrement),
              child: const Text("Decrement"),
            ),
            TextButton(
              onPressed: () => dispatch(random),
              child: const Text("Random"),
            ),
          ],
        ),
      ),
    );
  }
}