BASE 1

BASE_PAGE_TESTE.DART

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'HomePage'),
    );
  }
}

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

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends BasePageState<MyHomePage> {
  @override
  void initState() {
    debugPrint('BASE WORKER: INICIALIZOU A PAGINA 1');
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            TextButton(
              child: const Text('Open main2'),
              onPressed: () => Navigator.push(
                context,
                MaterialPageRoute(
                  builder: (context) => const MyHomePage2(title: 'Homepage 2'),
                ),
              ),
            ),
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$counter',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}

class MyHomePage2 extends BasePage {
  const MyHomePage2({
    super.key,
    required this.title,
  });

  final String title;

  @override
  _MyHomePageState2 createState() => _MyHomePageState2();
}

class _MyHomePageState2 extends BasePageState<MyHomePage2> {
  @override
  void initState() {
    debugPrint('BASE WORKER: INICIALIZOU A PAGINA 2');
    super.initState();
  }

  @override
  void incrementCounter() {
    setState(() {
      counter += 2;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$counter',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}

class BasePage extends StatefulWidget {
  const BasePage({Key? key}) : super(key: key);

  @override
  BasePageState createState() => BasePageState();
}

class BasePageState<T extends BasePage> extends State<T> {
  int counter = 0;

  @override
  void initState() {
    debugPrint('BASE WORKER: INICIALIZOU A BASE PAGE');
    super.initState();
  }

  void incrementCounter() {
    setState(() {
      counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Container();
  }
}