update didchangedependencies

packages/stream_chat_flutter/lib/src/message_list_view.dart

@@ -274,15 +274,15 @@ class _MessageListViewState extends State<MessageListView> {
   bool _showScrollToBottom = false;
   late final ItemPositionsListener _itemPositionListener;
   int? _messageListLength;
-  late StreamChannelState streamChannel;
+  StreamChannelState? streamChannel;
 
   int? get _initialIndex {
     if (widget.initialScrollIndex != null) return widget.initialScrollIndex;
-    if (streamChannel.initialMessageId != null) {
+    if (streamChannel!.initialMessageId != null) {
-      final messages = streamChannel.channel.state!.messages;
+      final messages = streamChannel!.channel.state!.messages;
       final totalMessages = messages.length;
       final messageIndex =
-          messages.indexWhere((e) => e.id == streamChannel.initialMessageId);
+          messages.indexWhere((e) => e.id == streamChannel!.initialMessageId);
       final index = totalMessages - messageIndex;
       if (index != 0) return index - 1;
       return index;
@@ -295,9 +295,9 @@ class _MessageListViewState extends State<MessageListView> {
     return 0;
   }
 
-  bool _isInitialMessage(String id) => streamChannel.initialMessageId == id;
+  bool _isInitialMessage(String id) => streamChannel!.initialMessageId == id;
 
-  bool get _upToDate => streamChannel.channel.state!.isUpToDate;
+  bool get _upToDate => streamChannel!.channel.state!.isUpToDate;
 
   bool get _isThreadConversation => widget.parentMessage != null;
 
@@ -506,13 +506,13 @@ class _MessageListViewState extends State<MessageListView> {
                     }
                     if (i == messages.length + 1) {
                       return _buildLoadingIndicator(
-                        streamChannel,
+                        streamChannel!,
                         QueryDirection.top,
                       );
                     }
                     if (i == 0) {
                       return _buildLoadingIndicator(
-                        streamChannel,
+                        streamChannel!,
                         QueryDirection.bottom,
                       );
                     }
@@ -525,7 +525,7 @@ class _MessageListViewState extends State<MessageListView> {
                         context,
                         message,
                         messages,
-                        streamChannel,
+                        streamChannel!,
                       );
                     } else if (i == messages.length - 1) {
                       messageWidget = _buildTopMessage(
@@ -605,8 +605,8 @@ class _MessageListViewState extends State<MessageListView> {
 
   Widget _buildScrollToBottom() => StreamBuilder<Tuple2<bool, int>>(
         stream: Rx.combineLatest2(
-          streamChannel.channel.state!.isUpToDateStream,
+          streamChannel!.channel.state!.isUpToDateStream,
-          streamChannel.channel.state!.unreadCountStream,
+          streamChannel!.channel.state!.unreadCountStream,
           (bool isUpToDate, int unreadCount) => Tuple2(isUpToDate, unreadCount),
         ),
         builder: (_, snapshot) {
@@ -622,8 +622,8 @@ class _MessageListViewState extends State<MessageListView> {
           }
           final unreadCount = snapshot.data!.item2;
           final showUnreadCount = unreadCount > 0 &&
-              streamChannel.channel.state!.members.any((e) =>
+              streamChannel!.channel.state!.members.any((e) =>
-                  e.userId == streamChannel.channel.client.state.user!.id);
+                  e.userId == streamChannel!.channel.client.state.user!.id);
           final chatThemeData = StreamChatTheme.of(context);
           return Positioned(
             bottom: 8,
@@ -637,12 +637,12 @@ class _MessageListViewState extends State<MessageListView> {
                   backgroundColor: chatThemeData.colorTheme.white,
                   onPressed: () {
                     if (unreadCount > 0) {
-                      streamChannel.channel.markRead();
+                      streamChannel!.channel.markRead();
                     }
                     if (!_upToDate) {
                       _bottomPaginationActive = false;
                       _topPaginationActive = false;
-                      streamChannel.reloadChannel();
+                      streamChannel!.reloadChannel();
                     } else {
                       setState(() => _showScrollToBottom = false);
                       _scrollController!.scrollTo(
@@ -888,7 +888,7 @@ class _MessageListViewState extends State<MessageListView> {
       );
     }
 
-    final channel = streamChannel.channel;
+    final channel = streamChannel!.channel;
     final readList = channel.state?.read?.where((read) {
           if (read.user.id == userId) return false;
           return read.lastRead.isAfter(message.createdAt) ||
@@ -962,7 +962,7 @@ class _MessageListViewState extends State<MessageListView> {
         if (messages.map((e) => e.id).contains(quotedMessageId)) {
           scrollToIndex();
         } else {
-          await streamChannel.loadChannelAtMessage(quotedMessageId).then((_) {
+          await streamChannel!.loadChannelAtMessage(quotedMessageId).then((_) {
             WidgetsBinding.instance!.addPostFrameCallback((_) {
               if (messages.map((e) => e.id).contains(quotedMessageId)) {
                 scrollToIndex();
@@ -1093,20 +1093,22 @@ class _MessageListViewState extends State<MessageListView> {
 
   @override
   void didChangeDependencies() {
-    streamChannel = StreamChannel.of(context);
+    final newStreamChannel = StreamChannel.of(context);
 
-    if (_messageNewListener == null) {
+    if (newStreamChannel != streamChannel) {
+      streamChannel = newStreamChannel;
+      _messageNewListener?.cancel();
       initialIndex = _initialIndex;
       initialAlignment = _initialAlignment;
 
       _messageNewListener =
-          streamChannel.channel.on(EventType.messageNew).listen((event) {
+          streamChannel!.channel.on(EventType.messageNew).listen((event) {
         if (_upToDate) {
           _bottomPaginationActive = false;
           _topPaginationActive = false;
         }
         if (event.message!.user!.id ==
-            streamChannel.channel.client.state.user!.id) {
+            streamChannel!.channel.client.state.user!.id) {
           WidgetsBinding.instance!.addPostFrameCallback((_) {
             _scrollController?.jumpTo(
               index: 0,
@@ -1116,9 +1118,10 @@ class _MessageListViewState extends State<MessageListView> {
       });
 
       if (_isThreadConversation) {
-        streamChannel.getReplies(widget.parentMessage!.id);
+        streamChannel!.getReplies(widget.parentMessage!.id);
       }
     }
+
     super.didChangeDependencies();
   }
 
@@ -1137,12 +1140,12 @@ class _MessageListViewState extends State<MessageListView> {
           context,
           MaterialPageRoute(
             builder: (_) => StreamBuilder<Message>(
-              stream: streamChannel.channel.state!.messagesStream.map(
+              stream: streamChannel!.channel.state!.messagesStream.map(
                   (messages) =>
                       messages!.firstWhere((m) => m.id == message.id)),
               initialData: message,
               builder: (_, snapshot) => StreamChannel(
-                channel: streamChannel.channel,
+                channel: streamChannel!.channel,
                 child: widget.threadBuilder!(context, snapshot.data),
               ),
             ),
@@ -1155,7 +1158,7 @@ class _MessageListViewState extends State<MessageListView> {
   @override
   void dispose() {
     if (!_upToDate) {
-      streamChannel.reloadChannel();
+      streamChannel!.reloadChannel();
     }
     _messageNewListener?.cancel();
     super.dispose();

packages/stream_chat_flutter_core/lib/src/channel_list_core.dart

@@ -120,7 +120,7 @@ class ChannelListCore extends StatefulWidget {
 /// The current state of the [ChannelListCore].
 class ChannelListCoreState extends State<ChannelListCore> {
   late ChannelsBlocState _channelsBloc;
-  late StreamChatCoreState _streamChatCoreState;
+  StreamChatCoreState? _streamChatCoreState;
 
   @override
   Widget build(BuildContext context) => _buildListView(_channelsBloc);
@@ -174,11 +174,13 @@ class ChannelListCoreState extends State<ChannelListCore> {
   @override
   void didChangeDependencies() {
     _channelsBloc = ChannelsBloc.of(context);
-    _streamChatCoreState = StreamChatCore.of(context);
+    final newStreamChatCoreState = StreamChatCore.of(context);
 
-    if (_subscription == null) {
+    if (newStreamChatCoreState != _streamChatCoreState) {
+      _streamChatCoreState = newStreamChatCoreState;
       loadData();
-      final client = _streamChatCoreState.client;
+      final client = _streamChatCoreState!.client;
+      _subscription?.cancel();
       _subscription = client
           .on(
             EventType.connectionRecovered,

packages/stream_chat_flutter_core/lib/src/channels_bloc.dart

@@ -62,7 +62,7 @@ class ChannelsBloc extends StatefulWidget {
 /// The current state of the [ChannelsBloc].
 class ChannelsBlocState extends State<ChannelsBloc>
     with AutomaticKeepAliveClientMixin {
-  late StreamChatCoreState _streamChatCoreState;
+  StreamChatCoreState? _streamChatCoreState;
 
   @override
   Widget build(BuildContext context) {
@@ -98,7 +98,7 @@ class ChannelsBlocState extends State<ChannelsBloc>
     PaginationParams paginationParams = const PaginationParams(limit: 30),
     Map<String, dynamic>? options,
   }) async {
-    final client = _streamChatCoreState.client;
+    final client = _streamChatCoreState!.client;
 
     final clear = paginationParams.offset == 0;
 
@@ -146,10 +146,13 @@ class ChannelsBlocState extends State<ChannelsBloc>
 
   @override
   void didChangeDependencies() {
-    _streamChatCoreState = StreamChatCore.of(context);
+    final newStreamChatCoreState = StreamChatCore.of(context);
-    final client = _streamChatCoreState.client;
 
-    if (_subscriptions.isEmpty) {
+    if (newStreamChatCoreState != _streamChatCoreState) {
+      _streamChatCoreState = newStreamChatCoreState;
+      final client = _streamChatCoreState!.client;
+
+      _cancelSubscriptions();
       if (!widget.lockChannelsOrder) {
         _subscriptions.add(client
             .on(

packages/stream_chat_flutter_core/lib/src/message_list_core.dart

@@ -109,23 +109,23 @@ class MessageListCore extends StatefulWidget {
 
 /// The current state of the [MessageListCore].
 class MessageListCoreState extends State<MessageListCore> {
-  late StreamChannelState _streamChannel;
+  StreamChannelState? _streamChannel;
 
-  bool get _upToDate => _streamChannel.channel.state?.isUpToDate ?? true;
+  bool get _upToDate => _streamChannel!.channel.state?.isUpToDate ?? true;
 
   bool get _isThreadConversation => widget.parentMessage != null;
 
-  OwnUser? get _currentUser => _streamChannel.channel.client.state.user;
+  OwnUser? get _currentUser => _streamChannel!.channel.client.state.user;
 
   var _messages = <Message>[];
 
   @override
   Widget build(BuildContext context) {
     final messagesStream = _isThreadConversation
-        ? _streamChannel.channel.state?.threadsStream
+        ? _streamChannel!.channel.state?.threadsStream
             .where((threads) => threads.containsKey(widget.parentMessage!.id))
             .map((threads) => threads[widget.parentMessage!.id])
-        : _streamChannel.channel.state?.messagesStream;
+        : _streamChannel!.channel.state?.messagesStream;
 
     bool defaultFilter(Message m) {
       final isMyMessage = m.user?.id == _currentUser?.id;
@@ -167,21 +167,23 @@ class MessageListCoreState extends State<MessageListCore> {
     QueryDirection direction = QueryDirection.top,
   }) {
     if (!_isThreadConversation) {
-      return _streamChannel.queryMessages(direction: direction);
+      return _streamChannel!.queryMessages(direction: direction);
     } else {
-      return _streamChannel.getReplies(widget.parentMessage!.id);
+      return _streamChannel!.getReplies(widget.parentMessage!.id);
     }
   }
 
-  var _initialized = false;
-
   @override
   void didChangeDependencies() {
-    _streamChannel = StreamChannel.of(context);
+    final newStreamChannel = StreamChannel.of(context);
-    if (!_initialized && _isThreadConversation) {
+
-      _initialized = true;
+    if (newStreamChannel != _streamChannel) {
-      _streamChannel.getReplies(widget.parentMessage!.id);
+      _streamChannel = newStreamChannel;
+      if (_isThreadConversation) {
+        _streamChannel!.getReplies(widget.parentMessage!.id);
+      }
     }
+
     super.didChangeDependencies();
   }
 
@@ -210,7 +212,7 @@ class MessageListCoreState extends State<MessageListCore> {
   @override
   void dispose() {
     if (!_upToDate) {
-      _streamChannel.reloadChannel();
+      _streamChannel!.reloadChannel();
     }
     super.dispose();
   }

packages/stream_chat_flutter_core/lib/src/message_search_list_core.dart

@@ -105,28 +105,22 @@ class MessageSearchListCore extends StatefulWidget {
 
 /// The current state of the [MessageSearchListCore].
 class MessageSearchListCoreState extends State<MessageSearchListCore> {
-  late MessageSearchBlocState _messageSearchBloc;
+  MessageSearchBlocState? _messageSearchBloc;
-
-  var _initialized = false;
 
   @override
   void didChangeDependencies() {
-    _messageSearchBloc = MessageSearchBloc.of(context);
+    final newMessageSearchBloc = MessageSearchBloc.of(context);
 
-    if (!_initialized) {
+    if (newMessageSearchBloc != _messageSearchBloc) {
+      _messageSearchBloc = newMessageSearchBloc;
       loadData();
-      _initialized = true;
     }
 
-    if (widget.messageSearchListController != null) {
-      widget.messageSearchListController!.loadData = loadData;
-      widget.messageSearchListController!.paginateData = paginateData;
-    }
     super.didChangeDependencies();
   }
 
   @override
-  Widget build(BuildContext context) => _buildListView(_messageSearchBloc);
+  Widget build(BuildContext context) => _buildListView(_messageSearchBloc!);
 
   Widget _buildListView(MessageSearchBlocState messageSearchBloc) =>
       StreamBuilder<List<GetMessageResponse>>(
@@ -147,7 +141,7 @@ class MessageSearchListCoreState extends State<MessageSearchListCore> {
       );
 
   /// Fetches initial messages and updates the widget
-  Future<void> loadData() => _messageSearchBloc.search(
+  Future<void> loadData() => _messageSearchBloc!.search(
         filter: widget.filters,
         sort: widget.sortOptions,
         query: widget.messageQuery,
@@ -156,11 +150,11 @@ class MessageSearchListCoreState extends State<MessageSearchListCore> {
       );
 
   /// Fetches more messages with updated pagination and updates the widget
-  Future<void> paginateData() => _messageSearchBloc.search(
+  Future<void> paginateData() => _messageSearchBloc!.search(
         filter: widget.filters,
         sort: widget.sortOptions,
         pagination: widget.paginationParams!.copyWith(
-          offset: _messageSearchBloc.messageResponses?.length ?? 0,
+          offset: _messageSearchBloc!.messageResponses?.length ?? 0,
         ),
         query: widget.messageQuery,
         messageFilter: widget.messageFilters,

packages/stream_chat_flutter_core/lib/src/user_list_core.dart

@@ -122,34 +122,25 @@ class UserListCore extends StatefulWidget {
 /// The current state of the [UserListCore].
 class UserListCoreState extends State<UserListCore>
     with WidgetsBindingObserver {
-  var _initialized = false;
+  UsersBlocState? _usersBloc;
 
   @override
   void didChangeDependencies() {
-    if (!_initialized) {
+    final newUsersBloc = UsersBloc.of(context);
+    if (newUsersBloc != _usersBloc) {
+      _usersBloc = newUsersBloc;
       loadData();
-      _initialized = true;
-    }
-    if (widget.userListController != null) {
-      widget.userListController!.loadData = loadData;
-      widget.userListController!.paginateData = paginateData;
     }
     super.didChangeDependencies();
   }
 
   @override
-  Widget build(BuildContext context) {
+  Widget build(BuildContext context) => _buildListView();
-    final _usersBloc = UsersBloc.of(context);
-    return _buildListView(_usersBloc);
-  }
 
   bool get _isListAlreadySorted =>
       widget.sort?.any((e) => e.field == 'name' && e.direction == 1) ?? false;
 
-  Stream<List<ListItem>> _buildUserStream(
+  Stream<List<ListItem>> _buildUserStream() => _usersBloc!.usersStream.map(
-    UsersBlocState usersBlocState,
-  ) =>
-      usersBlocState.usersStream.map(
         (users) {
           if (widget.groupAlphabetically) {
             var temp = users;
@@ -174,11 +165,8 @@ class UserListCoreState extends State<UserListCore>
         },
       );
 
-  StreamBuilder<List<ListItem>> _buildListView(
+  StreamBuilder<List<ListItem>> _buildListView() => StreamBuilder(
-    UsersBlocState usersBlocState,
+        stream: _buildUserStream(),
-  ) =>
-      StreamBuilder(
-        stream: _buildUserStream(usersBlocState),
         builder: (context, snapshot) {
           if (snapshot.hasError) {
             return widget.errorBuilder(snapshot.error!);
@@ -195,28 +183,22 @@ class UserListCoreState extends State<UserListCore>
       );
 
   // ignore: public_member_api_docs
-  Future<void> loadData() {
+  Future<void> loadData() => _usersBloc!.queryUsers(
-    final _usersBloc = UsersBloc.of(context);
+        filter: widget.filter,
-    return _usersBloc.queryUsers(
+        sort: widget.sort,
-      filter: widget.filter,
+        pagination: widget.pagination,
-      sort: widget.sort,
+        options: widget.options,
-      pagination: widget.pagination,
+      );
-      options: widget.options,
-    );
-  }
 
   // ignore: public_member_api_docs
-  Future<void> paginateData() {
+  Future<void> paginateData() => _usersBloc!.queryUsers(
-    final _usersBloc = UsersBloc.of(context);
+        filter: widget.filter,
-    return _usersBloc.queryUsers(
+        sort: widget.sort,
-      filter: widget.filter,
+        pagination: widget.pagination!.copyWith(
-      sort: widget.sort,
+          offset: _usersBloc!.users?.length ?? 0,
-      pagination: widget.pagination!.copyWith(
+        ),
-        offset: _usersBloc.users?.length ?? 0,
+        options: widget.options,
-      ),
+      );
-      options: widget.options,
-    );
-  }
 
   @override
   void didUpdateWidget(UserListCore oldWidget) {