mucke/lib/presentation/pages/albums_page.dart

import 'package:flutter/material.dart';
import 'package:flutter_mobx/flutter_mobx.dart';
import 'package:get_it/get_it.dart';

import '../../domain/entities/album.dart';
import '../state/music_data_store.dart';
import '../state/navigation_store.dart';
import '../widgets/album_art_list_tile.dart';
import 'album_details_page.dart';

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

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

class _AlbumsPageState extends State<AlbumsPage> with AutomaticKeepAliveClientMixin {
  @override
  Widget build(BuildContext context) {
    print('AlbumsPage.build');
    final MusicDataStore store = GetIt.I<MusicDataStore>();
    final NavigationStore navStore = GetIt.I<NavigationStore>();

    super.build(context);
    return Observer(builder: (_) {
      print('AlbumsPage.build -> Observer.builder');
      final List<Album> albums = store.albumStream.value ?? [];
      return Scrollbar(
        child: ListView.separated(
          itemCount: albums.length,
          itemBuilder: (_, int index) {
            final Album album = albums[index];
            return AlbumArtListTile(
              title: album.title,
              subtitle: album.artist,
              albumArtPath: album.albumArtPath,
              onTap: () {
                navStore.push(
                  context,
                  MaterialPageRoute<Widget>(
                    builder: (BuildContext context) => AlbumDetailsPage(
                      album: album,
                    ),
                  ),
                );
              },
            );
          },
          separatorBuilder: (BuildContext context, int index) => const SizedBox(
            height: 4.0,
          ),
        ),
      );
    });
  }

  @override
  bool get wantKeepAlive => true;
}