jolt_setup 3.0.1

jolt_setup: ^3.0.1 copied to clipboard

example/jolt_setup_example.dart

import 'package:flutter/material.dart';
import 'package:jolt_setup/hooks.dart';
import 'package:jolt_setup/jolt_setup.dart';

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

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

  @override
  Widget build(BuildContext context) {
    final textTheme = Theme.of(context).textTheme;

    return SetupBuilder(
      setup: (context) {
        final brightness = useSignal(Brightness.light);

        final counter = useSignal(0);

        final doubleCount = useComputed(() => counter.value * 2);

        final lastCounter = useSignal(0);

        int increment() => counter.value++;

        int decrement() => counter.value--;

        useWatcher(() => doubleCount.value, (_, oldValue) {
          lastCounter.value = oldValue!;
        });

        return () => MaterialApp(
              theme: ThemeData.light(),
              darkTheme: ThemeData.dark(),
              themeMode: brightness.value == Brightness.dark
                  ? ThemeMode.dark
                  : ThemeMode.light,
              home: Scaffold(
                body: DefaultTextStyle(
                  style: textTheme.displayMedium!.copyWith(
                    color: brightness.value == Brightness.dark
                        ? Colors.white
                        : Colors.black,
                  ),
                  child: Center(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      mainAxisAlignment: MainAxisAlignment.center,
                      mainAxisSize: MainAxisSize.min,
                      spacing: 8,
                      children: [
                        Text('counter: ${counter.value}'),
                        Text('doubleCount: ${doubleCount.value}'),
                        Text('lastDoubleCounter: ${lastCounter.value}'),
                      ],
                    ),
                  ),
                ),
                floatingActionButton: Column(
                  mainAxisAlignment: MainAxisAlignment.end,
                  crossAxisAlignment: CrossAxisAlignment.end,
                  children: <Widget>[
                    FloatingActionButton(
                      onPressed: () {
                        brightness.value = brightness.value == Brightness.light
                            ? Brightness.dark
                            : Brightness.light;
                      },
                      child: brightness.value == Brightness.light
                          ? Icon(Icons.brightness_2)
                          : Icon(Icons.brightness_7),
                    ),
                    const SizedBox(height: 8),
                    FloatingActionButton(
                      onPressed: increment,
                      child: const Icon(Icons.add),
                    ),
                    const SizedBox(height: 8),
                    FloatingActionButton(
                      onPressed: decrement,
                      child: const Icon(Icons.remove),
                    ),
                  ],
                ),
              ),
            );
      },
    );
  }
}