fluffychat/lib/pages/chat_list/spaces_hierarchy_proposal.dart

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import 'dart:async';
import 'package:flutter/material.dart';
import 'package:animations/animations.dart';
import 'package:async/async.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
import 'package:matrix/matrix.dart';
import 'package:fluffychat/pages/chat_list/search_title.dart';
import 'package:fluffychat/widgets/matrix.dart';
import 'recommended_room_list_item.dart';
class SpacesHierarchyProposals extends StatefulWidget {
static final Map<String, AsyncCache<GetSpaceHierarchyResponse?>> _cache = {};
final String? space;
final String? query;
const SpacesHierarchyProposals({
Key? key,
required this.space,
this.query,
}) : super(key: key);
@override
State<SpacesHierarchyProposals> createState() =>
_SpacesHierarchyProposalsState();
}
class _SpacesHierarchyProposalsState extends State<SpacesHierarchyProposals> {
@override
void didUpdateWidget(covariant SpacesHierarchyProposals oldWidget) {
if (oldWidget.space != widget.space || oldWidget.query != widget.query) {
setState(() {});
}
super.didUpdateWidget(oldWidget);
}
@override
Widget build(BuildContext context) {
// check for recommended rooms in case the active space is a [SpaceSpacesEntry]
if (widget.space != null) {
final client = Matrix.of(context).client;
final cache = SpacesHierarchyProposals._cache[widget.space!] ??=
AsyncCache<GetSpaceHierarchyResponse?>(const Duration(minutes: 15));
/// additionally saving the future's state in the completer in order to
/// display the loading indicator when refreshing as a [FutureBuilder] is
/// a [StatefulWidget].
final completer = Completer();
final future = cache.fetch(() => client.getSpaceHierarchy(
widget.space!,
suggestedOnly: true,
maxDepth: 1,
));
future.then(completer.complete);
return FutureBuilder<GetSpaceHierarchyResponse?>(
future: future,
builder: (context, snapshot) {
Widget child;
if (snapshot.hasData) {
final thereWereRooms = snapshot.data!.rooms.isNotEmpty;
final rooms = snapshot.data!.rooms.where(
(element) =>
element.roomId != widget.space &&
// filtering in case a query is given
(widget.query != null
? (element.name?.contains(widget.query!) ?? false) ||
(element.topic?.contains(widget.query!) ?? false)
// in case not, just leave it...
: true) &&
client.rooms
.every((knownRoom) => element.roomId != knownRoom.id),
);
if (rooms.isEmpty && !thereWereRooms) {
child = const ListTile(key: ValueKey(false));
}
child = Column(
key: ValueKey(widget.space),
mainAxisSize: MainAxisSize.min,
children: [
SearchTitle(
title: L10n.of(context)!.suggestedRooms,
icon: const Icon(Icons.auto_awesome_outlined),
trailing: completer.isCompleted
? const Icon(
Icons.refresh_outlined,
size: 16,
)
: const SizedBox(
width: 16,
height: 16,
child: CircularProgressIndicator.adaptive(
strokeWidth: 1,
),
),
onTap: _refreshRooms,
),
if (rooms.isEmpty && thereWereRooms)
ListTile(
leading: const Icon(Icons.info),
title: Text(L10n.of(context)!.allSuggestedRoomsJoined),
),
...rooms.map(
(e) => RecommendedRoomListItem(
room: e,
onRoomJoined: _refreshRooms,
),
),
],
);
} else {
child = Column(
key: const ValueKey(null),
children: [
if (!snapshot.hasError) const LinearProgressIndicator(),
const ListTile(),
],
);
}
return PageTransitionSwitcher(
// prevent the animation from re-building on dependency change
key: ValueKey(widget.space),
transitionBuilder: (
Widget child,
Animation<double> primaryAnimation,
Animation<double> secondaryAnimation,
) {
return SharedAxisTransition(
animation: primaryAnimation,
secondaryAnimation: secondaryAnimation,
transitionType: SharedAxisTransitionType.scaled,
child: child,
fillColor: Colors.transparent,
);
},
layoutBuilder: (children) => Stack(
alignment: Alignment.topCenter,
children: children,
),
child: child,
);
},
);
} else {
return Container();
}
}
void _refreshRooms() => setState(
() => SpacesHierarchyProposals._cache[widget.space!]!.invalidate(),
);
}