nexus/lib/widgets/room_chat.dart

602 lines
23 KiB
Dart

import "package:fast_immutable_collections/fast_immutable_collections.dart";
import "package:flutter/material.dart";
import "package:flutter/services.dart";
import "package:flutter_hooks/flutter_hooks.dart";
import "package:hooks_riverpod/hooks_riverpod.dart";
import "package:measure_size/measure_size.dart";
import "package:nexus/controllers/account_data.dart";
import "package:nexus/controllers/client.dart";
import "package:nexus/controllers/client_state.dart";
import "package:nexus/controllers/member_list_opened.dart";
import "package:nexus/controllers/pinned_ids.dart";
import "package:nexus/controllers/power_level.dart";
import "package:nexus/controllers/rooms.dart";
import "package:nexus/controllers/room_chat.dart";
import "package:nexus/controllers/via.dart";
import "package:nexus/models/content/message.dart";
import "package:nexus/models/event.dart";
import "package:nexus/models/relation_type.dart";
import "package:nexus/widgets/composer/composer.dart";
import "package:nexus/widgets/emoji_picker_button.dart";
import "package:nexus/widgets/pinned_events_drawer.dart";
import "package:nexus/widgets/renderers/event.dart";
import "package:nexus/widgets/member_list.dart";
import "package:nexus/widgets/room_appbar.dart";
import "package:nexus/widgets/highlight_wrapper.dart";
import "package:nexus/widgets/error_dialog.dart";
import "package:nexus/main.dart";
import "package:nexus/widgets/loading.dart";
import "package:super_sliver_list/super_sliver_list.dart";
class RoomChat extends HookConsumerWidget {
final bool isDesktop;
final bool showMembersByDefault;
final String? roomId;
const RoomChat({
required this.roomId,
required this.isDesktop,
required this.showMembersByDefault,
super.key,
});
@override
Widget build(BuildContext context, WidgetRef ref) {
final relatedEvent = useState<Event?>(null);
final relationType = useState(RelationType.reply);
final highlightedEvent = useState<String?>(null);
final composerSize = useState<double>(64);
final userId = ref.watch(ClientStateController.provider)?.userId;
final memberListOpened = ref.watch(MemberListOpenedController.provider);
final theme = Theme.of(context);
final nothing = Center(
child: Text(
"Nothing to see here...",
style: theme.textTheme.headlineMedium,
),
);
if (userId == null || this.roomId == null) {
return Scaffold(
appBar: RoomAppbar(
roomId: this.roomId,
isDesktop: isDesktop,
onOpenDrawer: () => Scaffold.of(context).openDrawer(),
),
body: nothing,
);
}
final roomId = this.roomId!;
final controllerProvider = RoomChatController.provider(roomId);
final notifier = ref.watch(controllerProvider.notifier);
final client = ref.watch(ClientController.provider.notifier);
final scrollController = useScrollController();
final controllerData = ref.watch(controllerProvider);
final historyListController = useRef(ListController());
final liveListController = useRef(ListController());
final timelineCenterKey = useMemoized(GlobalKey.new);
final timelineBoundary = useRef<String?>(null);
final hasMore = ref.watch(
RoomsController.provider.select(
(rooms) => rooms[roomId]?.hasMore ?? false,
),
);
Future<void> jumpToId(String eventId) async {
final events = controllerData.value;
if (events == null || !scrollController.hasClients) return;
final sourceIndex = events.indexWhere(
(event) => event.eventId == eventId,
);
final boundaryIndex = events.indexWhere(
(event) => event.eventId == timelineBoundary.value,
);
if (sourceIndex < 0 || boundaryIndex < 0) return;
final listController = sourceIndex <= boundaryIndex
? historyListController.value
: liveListController.value;
if (!listController.isAttached) return;
listController.animateToItem(
index: sourceIndex <= boundaryIndex
? boundaryIndex - sourceIndex
: sourceIndex - boundaryIndex - 1,
scrollController: scrollController,
alignment: 0.5,
duration: (_) => .new(milliseconds: 700),
curve: (_) => Curves.easeInOut,
);
highlightedEvent.value = eventId;
await Future.delayed(.new(seconds: 1), () {
if (highlightedEvent.value == eventId) {
highlightedEvent.value = null;
}
});
}
final composerNode = useFocusNode(
onKeyEvent: (_, event) {
if (event is KeyDownEvent && event.logicalKey == .escape) {
relatedEvent.value = null;
return KeyEventResult.handled;
}
return KeyEventResult.ignored;
},
);
IList<PopupMenuEntry> getEventOptions(Event event) {
final danger = theme.colorScheme.error;
final isSentByMe = event.sender == userId;
return [
if (ref.watch(
PowerLevelController.provider(
.new(eventType: .reaction, roomId: roomId),
),
))
PopupMenuItem(
enabled: false,
child: IconTheme(
data: theme.iconTheme,
child: Row(
children: [
...{
...ref.watch(
AccountDataController.provider.select(
(value) => value.recentEmoji
.map((entry) => entry.emoji)
.toIList(),
),
),
"👍",
"🤣",
"😭",
"🤔",
}
.toIList()
.sublist(0, 4)
.map(
(emoji) => IconButton(
onPressed: () async {
Navigator.of(context).pop();
await notifier
.sendReaction(emoji, event)
.onError(showError);
},
icon: Text(emoji),
),
),
EmojiPickerButton(
context: context,
onPressed: Navigator.of(context).pop,
onSelection: (emoji) =>
notifier.sendReaction(emoji, event).onError(showError),
),
],
),
),
),
if (ref.watch(
PowerLevelController.provider(
.new(eventType: .message, roomId: roomId),
),
))
PopupMenuItem(
onTap: () {
relatedEvent.value = event;
relationType.value = .reply;
composerNode.requestFocus();
},
child: ListTile(leading: Icon(Icons.reply), title: Text("Reply")),
),
if (event.content is MessageContent && isSentByMe)
PopupMenuItem(
onTap: () {
relatedEvent.value = event;
relationType.value = .edit;
composerNode.requestFocus();
},
child: ListTile(leading: Icon(Icons.edit), title: Text("Edit")),
),
if (ref.watch(
PowerLevelController.provider(
.state(eventType: .pinnedEvents, roomId: roomId),
),
))
switch (ref
.watch(PinnedIdsController.provider(roomId))
.contains(event.eventId)) {
bool isPinned => PopupMenuItem(
onTap: () async {
try {
final notifier = ref.read(
PinnedIdsController.provider(roomId).notifier,
);
if (isPinned) {
await notifier.removePin(event.eventId);
} else {
await notifier.addPin(event.eventId);
}
} catch (error, stackTrace) {
showError(error, stackTrace);
}
},
child: ListTile(
leading: Icon(Icons.push_pin),
title: Text(isPinned == true ? "Unpin Event" : "Pin Event"),
),
),
},
PopupMenuItem(
onTap: () async {
final room = ref.watch(
RoomsController.provider.select((value) => value[roomId]),
);
if (room == null) return;
final vias = ref.watch(ViaController.provider(room));
await Clipboard.setData(
ClipboardData(
text:
"matrix:roomid/${room.metadata?.id.substring(1)}/e/${event.eventId}$vias)",
),
);
},
child: ListTile(leading: Icon(Icons.link), title: Text("Copy Link")),
),
if (ref.watch(
PowerLevelController.provider(
.redaction(targetUser: event.sender, roomId: roomId),
),
))
PopupMenuItem(
onTap: () => showDialog(
context: context,
builder: (context) => HookBuilder(
builder: (_) {
final deleteReasonController = useTextEditingController();
return AlertDialog(
title: Text("Delete Message"),
content: Column(
mainAxisSize: .min,
crossAxisAlignment: .start,
children: [
Text(
"Are you sure you want to delete this message? This can not be reversed.",
),
SizedBox(height: 12),
TextField(
controller: deleteReasonController,
textCapitalization: .sentences,
decoration: .new(
labelText: "Reason for deletion (optional)",
),
),
],
),
actions: [
TextButton(
onPressed: Navigator.of(context).pop,
child: Text("Cancel"),
),
TextButton(
onPressed: () async {
Navigator.of(context).pop();
await notifier
.deleteMessage(
event,
reason: deleteReasonController.text,
)
.onError(showError);
},
child: Text("Delete"),
),
],
);
},
),
),
child: ListTile(
leading: Icon(Icons.delete, color: danger),
title: Text("Delete", style: .new(color: danger)),
),
),
PopupMenuItem(
onTap: () => showDialog(
context: context,
builder: (context) => HookBuilder(
builder: (_) {
final reasonController = useTextEditingController();
return AlertDialog(
title: Text("Report"),
content: Column(
mainAxisSize: .min,
crossAxisAlignment: .start,
children: [
Text(
"Report this event to your server administrators, who can take action like banning this server or room.",
),
SizedBox(height: 12),
TextField(
controller: reasonController,
textCapitalization: .sentences,
decoration: .new(
labelText: "Reason for report (optional)",
),
),
],
),
actions: [
TextButton(
onPressed: Navigator.of(context).pop,
child: Text("Cancel"),
),
TextButton(
onPressed: () {
client.reportEvent(
.new(
roomId: roomId,
eventId: event.eventId,
reason: reasonController.text.isEmpty
? null
: reasonController.text,
),
);
Navigator.of(context).pop();
},
child: Text("Report"),
),
],
);
},
),
),
child: ListTile(
leading: Icon(Icons.report, color: danger),
title: Text("Report", style: .new(color: danger)),
),
),
].toIList();
}
return Scaffold(
endDrawer: PinnedEventsDrawer(
roomId,
getEventOptions: getEventOptions,
jumpToId: jumpToId,
),
body: Builder(
builder: (middleContext) => Scaffold(
endDrawer: showMembersByDefault ? null : MemberList(roomId),
appBar: RoomAppbar(
roomId: roomId,
isDesktop: isDesktop,
onOpenDrawer: Scaffold.of(context).openDrawer,
onOpenMemberList: (thisContext) {
ref
.watch(MemberListOpenedController.provider.notifier)
.set(!memberListOpened);
Scaffold.of(thisContext).openEndDrawer();
},
onOpenPinnedMessagesList: () {
Scaffold.of(middleContext).openEndDrawer();
},
),
body: Row(
children: [
Expanded(
child: Stack(
children: [
Positioned.fill(
child: Padding(
padding: .symmetric(horizontal: 4),
child: switch (controllerData) {
AsyncData(:final value?) ||
AsyncLoading(:final value?) => Builder(
builder: (_) {
if (value.isEmpty) return nothing;
var boundaryIndex = value.indexWhere(
(event) =>
event.eventId == timelineBoundary.value,
);
if (boundaryIndex < 0) {
boundaryIndex = value.length - 1;
timelineBoundary.value =
value[boundaryIndex].eventId;
}
final historyLength = boundaryIndex + 1;
final liveLength = value.length - historyLength;
int? eventIndexForKey(Key key) {
if (key is! ValueKey<String>) return null;
final index = value.indexWhere(
(event) => event.eventId == key.value,
);
return index < 0 ? null : index;
}
int? historyChildIndex(Key key) {
if (key == const ValueKey("history-loader")) {
return historyLength;
}
final eventIndex = eventIndexForKey(key);
return eventIndex == null ||
eventIndex >= historyLength
? null
: historyLength - eventIndex - 1;
}
int? liveChildIndex(Key key) {
final eventIndex = eventIndexForKey(key);
return eventIndex == null ||
eventIndex < historyLength
? null
: eventIndex - historyLength;
}
Widget eventRow(
Event event,
Event? previousEvent,
) => HighlightWrapper(
EventRenderer(
event,
onTapReply: () => jumpToId(event.replyTo!),
getEventOptions: getEventOptions,
isGrouped:
previousEvent?.content
is MessageContent &&
previousEvent?.redactedBy == null &&
previousEvent?.relationType !=
"m.replace" &&
"${event.sender}${event.pmp?.id}" ==
"${previousEvent?.sender}${previousEvent?.pmp?.id}",
),
key: ValueKey(event.eventId),
isHighlighted:
highlightedEvent.value == event.eventId,
);
return CustomScrollView(
reverse: true,
center: timelineCenterKey,
keyboardDismissBehavior:
ScrollViewKeyboardDismissBehavior.onDrag,
controller: scrollController,
slivers: [
SliverToBoxAdapter(
child: SizedBox(height: composerSize.value),
),
SuperSliverList.builder(
listController: liveListController.value,
itemCount: liveLength,
findChildIndexCallback: liveChildIndex,
itemBuilder: (_, index) => eventRow(
value[historyLength + index],
value.getOrNull(
historyLength + index - 1,
),
),
),
SuperSliverList.builder(
key: timelineCenterKey,
listController: historyListController.value,
itemCount: historyLength + 1,
findChildIndexCallback: historyChildIndex,
itemBuilder: (_, index) {
if (index == historyLength) {
return _HistoryLoader(
key: const ValueKey("history-loader"),
hasMore: hasMore,
isLoading:
controllerData is AsyncLoading,
onLoad: notifier.loadOlder,
);
}
final event =
value[historyLength - index - 1];
return eventRow(
event,
value.getOrNull(
historyLength - index - 2,
),
);
},
),
],
);
},
),
AsyncData() => nothing,
AsyncLoading() => Loading(),
AsyncError(:final error, :final stackTrace) =>
ErrorDialog(error, stackTrace),
},
),
),
Positioned(
bottom: 0,
left: 0,
right: 0,
child: MeasureSize(
onChange: (size) => composerSize.value = size.height,
child: Composer(
roomId,
node: composerNode,
onSend:
(text, {required shouldMention, required tags}) =>
notifier
.send(
text,
tags: tags,
relationType: relationType.value,
shouldMention: shouldMention,
relation: relatedEvent.value,
)
.onError(showError),
relationType: relationType.value,
relatedEvent: relatedEvent.value,
onDismiss: () => relatedEvent.value = null,
),
),
),
],
),
),
if (memberListOpened == true && showMembersByDefault)
MemberList(roomId),
],
),
),
),
);
}
}
class _HistoryLoader extends HookWidget {
final bool hasMore;
final bool isLoading;
final Future<void> Function() onLoad;
const _HistoryLoader({
required this.hasMore,
required this.isLoading,
required this.onLoad,
super.key,
});
@override
Widget build(BuildContext context) {
useEffect(() {
if (hasMore) {
Future.microtask(onLoad);
}
return null;
}, const []);
return Padding(
padding: .symmetric(vertical: 36),
child: Center(
child: ElevatedButton(
onPressed: hasMore && !isLoading ? onLoad : null,
child: isLoading
? SizedBox(
height: 20,
width: 20,
child: CircularProgressIndicator(strokeWidth: 2),
)
: Text(hasMore ? "Load More" : "Start of timeline"),
),
),
);
}
}