mucke/lib/presentation/pages/queue_page.dart
2021-08-28 21:12:56 +02:00

108 lines
3.9 KiB
Dart

import 'dart:math';
import 'package:flutter/material.dart';
import 'package:flutter_mobx/flutter_mobx.dart';
import 'package:get_it/get_it.dart';
import 'package:mobx/mobx.dart';
import 'package:reorderables/reorderables.dart';
import '../../domain/entities/song.dart';
import '../state/audio_store.dart';
import '../theming.dart';
import '../widgets/song_bottom_sheet.dart';
import '../widgets/song_list_tile.dart';
class QueuePage extends StatelessWidget {
const QueuePage({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
print('QueuePage.build');
final AudioStore audioStore = GetIt.I<AudioStore>();
final ObservableStream<int> queueIndexStream = audioStore.queueIndexStream;
final initialIndex = max((queueIndexStream.value ?? 0) - 2, 0);
final ScrollController _scrollController =
ScrollController(initialScrollOffset: initialIndex * 72.0);
return SafeArea(
child: Scaffold(
appBar: AppBar(
leading: Padding(
padding: const EdgeInsets.only(left: 12.0),
child: IconButton(
icon: const Icon(Icons.expand_more),
onPressed: () => Navigator.pop(context),
),
),
leadingWidth: 60.0,
title: const Text(
'Currently Playing',
style: TEXT_HEADER,
),
actions: [
IconButton(
icon: const Icon(Icons.play_arrow_outlined),
onPressed: () {
_scrollController.animateTo(
max((queueIndexStream.value ?? 0) - 2, 0) * 72.0,
duration: const Duration(milliseconds: 200),
curve: Curves.easeInOut,
);
},
)
],
centerTitle: true,
),
body: Observer(
builder: (BuildContext context) {
print('QueuePage.build -> Observer.build');
final ObservableStream<List<Song>> queueStream = audioStore.queueStream;
switch (queueStream.status) {
case StreamStatus.active:
final int activeIndex = queueIndexStream.value ?? -1;
return Scrollbar(
child: CustomScrollView(
controller: _scrollController,
slivers: [
ReorderableSliverList(
delegate: ReorderableSliverChildBuilderDelegate(
(context, int index) {
final Song? song = queueStream.value?[index];
if (song == null) return Container();
return Dismissible(
key: ValueKey(song.path),
child: SongListTile(
song: song,
highlight: index == activeIndex,
onTap: () async {
await audioStore.seekToIndex(index);
audioStore.play();
},
onTapMore: () => SongBottomSheet()(song, context),
),
onDismissed: (direction) {
audioStore.removeQueueIndex(index);
},
);
},
childCount: queueStream.value?.length,
),
onReorder: (oldIndex, newIndex) =>
audioStore.moveQueueItem(oldIndex, newIndex),
)
],
),
);
case StreamStatus.waiting:
case StreamStatus.done:
default:
return Container();
}
},
),
),
);
}
}