OpenMediacenterMobileFlutter/lib/DrawerPage.dart

import 'package:flutter/material.dart';
import 'package:openmediacentermobile/navigation/settings_screen.dart';
import 'navigation/actor_screen.dart';
import 'navigation/categorie_screen.dart';
import 'navigation/shufflescreen.dart';
import 'navigation/video_feed.dart';

class DrawerPage extends StatefulWidget {
  const DrawerPage({Key? key, required this.title}) : super(key: key);

  final String title;

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

enum Section { HOME, SHUFFLE, SETTING, CATEGORIE, ACTOR }

class _DrawerPageState extends State<DrawerPage> {
  Section _sec = Section.HOME;

  @override
  Widget build(BuildContext context) {
    Widget body;
    String title;

    switch (_sec) {
      case Section.HOME:
        body = const VideoFeed();
        title = widget.title;
        break;

      case Section.SHUFFLE:
        body = const ShuffleScreen();
        title = "Shuffle";
        break;

      case Section.SETTING:
        body = SettingsScreen();
        title = "Settings";
        break;

      case Section.CATEGORIE:
        body = CategorieScreen();
        title = "Categories";
        break;

      case Section.ACTOR:
        body = ActorScreen();
        title = "Actors";
        break;
    }

    return DrawerContext(
      child: body,
      onChangePage: (newPage) {
        setState(() {
          _sec = newPage;
        });
      },
      routeName: title,
    );
  }
}

class MyDrawer extends StatelessWidget {
  const MyDrawer({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final ctx = DrawerContext.of(context);

    return Drawer(
      child: ListView(children: [
        ListTile(
          title: const Text('Home'),
          leading: const Icon(Icons.home),
          onTap: () {
            ctx.onChangePage(Section.HOME);
            Navigator.pop(context);
          },
        ),
        ListTile(
          title: const Text('Shuffle'),
          leading: const Icon(Icons.update),
          onTap: () {
            ctx.onChangePage(Section.SHUFFLE);
            Navigator.pop(context);
          },
        ),
        ListTile(
          title: const Text('Categories'),
          leading: const Icon(Icons.category),
          onTap: () {
            ctx.onChangePage(Section.CATEGORIE);
            Navigator.pop(context);
          },
        ),
        ListTile(
          title: const Text('Actors'),
          leading: const Icon(Icons.people),
          onTap: () {
            ctx.onChangePage(Section.ACTOR);
            Navigator.pop(context);
          },
        ),
        ListTile(
          title: const Text('Settings'),
          leading: const Icon(Icons.settings),
          onTap: () {
            ctx.onChangePage(Section.SETTING);
            Navigator.pop(context);
          },
        ),
      ]),
    );
  }
}

class DrawerContext extends InheritedWidget {
  const DrawerContext({
    Key? key,
    required Widget child,
    required this.onChangePage,
    required this.routeName,
  }) : super(key: key, child: child);

  final void Function(Section) onChangePage;
  final String routeName;

  static DrawerContext of(BuildContext context) {
    final DrawerContext? result =
        context.dependOnInheritedWidgetOfExactType<DrawerContext>();
    assert(result != null, 'No DrawerContext found in context');
    return result!;
  }

  @override
  bool updateShouldNotify(covariant InheritedWidget oldWidget) {
    return false;
  }
}