Prototype for home screen decentralisation of routes 'upper' widgets

home.dart

class _HomeItem {
  _HomeItem({
    @required this.appbar,
    @required this.body
  });

  final PreferredSizeWidget appbar;
  final Widget body;
}

class HomeController extends RxController {
  static HomeController get to => Get.find();
  final currentRoute = 0.obs;
}

class HomeScreen extends StatelessWidget {
  final _homeItems = [
    _HomeItem(
      appbar: AgendaScreen.appbar(),
      body: AgendaScreen(),
    ),
    _HomeItem(
      appbar: OrderListScreen.appbar(),
      body: OrderListScreen(),
    ),
    _HomeItem(
      appbar: RequestListScreen.appbar(),
      body: RequestListScreen(),
    ),
    _HomeItem(
      appbar: ProfileScreen.appbar(),
      body: ProfileScreen(),
    ),
  ];

  Widget _buildScaffold(BuildContext context, HomeController _) {
    final theme = Theme.of(context);
    final selected = theme.accentColor;
    final unselected = theme.iconTheme.color.withOpacity(0.7);
    final index = _.currentRoute.value;
    final route = _homeItems[index];

    return Scaffold(
      appBar: route.appbar,
      body: route.body,
      bottomNavigationBar: BottomNavigationBar(
        currentIndex: index,
        selectedItemColor: selected,
        unselectedItemColor: unselected,
        onTap: (index) {
          _.currentRoute.value = index;
        },
        items: const <BottomNavigationBarItem>[
          BottomNavigationBarItem(
            icon: Icon(Icons.calendar_today),
            title: Text('Agenda'),
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.business),
            title: Text('Ordens'),
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.school),
            title: Text('Solicitações'),
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.account_circle),
            title: Text('Perfil'),
          ),
        ],
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return GetX<HomeController>(
      init: HomeController(),
      builder: (_) => _buildScaffold(context, _),
    );
  }
}