get_notifier 0.0.16

Flutter plugin to use the power of ChangeNotifier and GetIt together.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:get_notifier/get_notifier.dart';
import 'package:get_notifier_example/app_model.dart';
import 'package:get_notifier_example/helper.dart';

// This is our global ServiceLocator
// GetIt getIt = GetIt.instance;

void main() {
  GetIt.instance
    ..registerSingleton(AppModel(), signalsReady: true)
    ..registerFactory(() => Service());

  runApp(const MyApp());
}

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

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(primarySwatch: Colors.blue),
      home: MyHomePage(title: 'Get Notifier Example Page'),
    );
  }
}

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

  final String title;

  final am = GetIt.I.get<AppModel>();

  @override
  Widget build(BuildContext context) {
    return Material(
      child: FutureBuilder(
        future: GetIt.I.allReady(),
        builder: (context, snapshot) {
          if (snapshot.hasData) {
            return Scaffold(
              appBar: AppBar(title: Text(title)),
              body: Consumer2<AppModel, Service>(
                builder: (appModel, service, child) {
                  return Center(
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: <Widget>[
                        const Text('You have pushed the button this many times:'),
                        Text(appModel.counter.toString(), style: Theme.of(context).textTheme.headlineMedium),
                        ElevatedButton(
                          onPressed: () {
                            appModel.counter += 1;
                          },
                          child: const Text('Straight Increment'),
                        ),
                        ElevatedButton(onPressed: service.incrementCounter, child: const Text('Service Increment')),
                        ElevatedButton(
                          onPressed: () {
                            am.counter += 1;
                          },
                          child: const Text('Other Increment'),
                        ),
                      ],
                    ),
                  );
                },
              ),
              floatingActionButton: Worker<Service>(
                builder: (s, child) {
                  return FloatingActionButton(
                    onPressed: () {
                      s.decrementCounter();
                    },
                    tooltip: 'Increment',
                    child: const Icon(Icons.add),
                  );
                },
              ),
            );
          } else {
            return const Column(
              mainAxisAlignment: MainAxisAlignment.center,
              mainAxisSize: MainAxisSize.min,
              children: [Text('Waiting for initialisation'), SizedBox(height: 16), CircularProgressIndicator()],
            );
          }
        },
      ),
    );
  }
}