flutter_causality

Motivation

I wanted to provide some convenience extensions for using causality with Flutter.

Supported Features

• ✅ Put a causality universe widget in the wigdet tree
• ✅ Put an effect widget in the widget tree to observe causes

Installation

As simple as dart pub add flutter_causality.

Or manually add flutter_causality: ^<version> to your pubspec.yaml.

Examples

runApp(
  CausalityUniverseWidget(
    causalityUniverse: causalityUniverse,
    child: MaterialApp(
      home: Scaffold(
        body: EffectWidget(
          builder: (cause) => switch (cause) {
            ViewModelUpdatedCause _ => Center(
                child: Text(cause.viewModel.data ?? ''),
              ),
            _ => const Center(
                child: CircularProgressIndicator(),
              ),
          },
          observedCauseTypes: const [
            ViewModelUpdatedCause,
          ],
        ),
      ),
    ),
  ),
);