feat: Added load data to controllers

packages/stream_chat_flutter_core/lib/src/channel_list_view_core.dart

@@ -168,6 +168,17 @@ class _ChannelListViewCoreState extends State<ChannelListViewCore>
     return widget.errorBuilder(snapshot.error);
   }
 
+  void loadData() {
+    final channelsBloc = ChannelsBloc.of(context);
+
+    channelsBloc.queryChannels(
+      filter: widget.filter,
+      sortOptions: widget.sort,
+      paginationParams: widget.pagination,
+      options: widget.options,
+    );
+  }
+
   void paginateData() {
     final channelsBloc = ChannelsBloc.of(context);
 
@@ -216,6 +227,7 @@ class _ChannelListViewCoreState extends State<ChannelListViewCore>
     });
 
     if (widget.channelListController != null) {
+      widget.channelListController.loadData = loadData;
       widget.channelListController.paginateData = paginateData;
     }
   }
@@ -249,5 +261,6 @@ class _ChannelListViewCoreState extends State<ChannelListViewCore>
 
 /// Controller used for paginating data in [ChannelListViewCore]
 class ChannelListController {
+  VoidCallback loadData;
   VoidCallback paginateData;
 }

packages/stream_chat_flutter_core/lib/src/message_search_list_view_core.dart

@@ -115,6 +115,7 @@ class _MessageSearchListViewCoreState extends State<MessageSearchListViewCore> {
     );
 
     if (widget.messageSearchListController != null) {
+      widget.messageSearchListController.loadData = loadData;
       widget.messageSearchListController.paginateData = paginateData;
     }
   }
@@ -152,6 +153,18 @@ class _MessageSearchListViewCoreState extends State<MessageSearchListViewCore> {
     );
   }
 
+  void loadData() {
+    final messageSearchBloc = MessageSearchBloc.of(context);
+
+    messageSearchBloc.search(
+      filter: widget.filters,
+      sort: widget.sortOptions,
+      query: widget.messageQuery,
+      pagination: widget.paginationParams,
+      messageFilter: widget.messageFilters,
+    );
+  }
+
   void paginateData() {
     final messageSearchBloc = MessageSearchBloc.of(context);
 
@@ -190,5 +203,6 @@ class _MessageSearchListViewCoreState extends State<MessageSearchListViewCore> {
 
 /// Controller used for paginating data in [ChannelListView]
 class MessageSearchListController {
+  VoidCallback loadData;
   VoidCallback paginateData;
 }

packages/stream_chat_flutter_core/lib/src/user_list_view_core.dart

@@ -115,6 +115,7 @@ class _UserListViewCoreState extends State<UserListViewCore>
     );
 
     if (widget.userListController != null) {
+      widget.userListController.loadData = loadData;
       widget.userListController.paginateData = paginateData;
     }
   }
@@ -203,6 +204,17 @@ class _UserListViewCoreState extends State<UserListViewCore>
     );
   }
 
+  void loadData() {
+    final usersBloc = UsersBloc.of(context);
+
+    usersBloc.queryUsers(
+      filter: widget.filter,
+      sort: widget.sort,
+      pagination: widget.pagination,
+      options: widget.options,
+    );
+  }
+
   void paginateData() {
     final usersBloc = UsersBloc.of(context);
 
@@ -276,5 +288,6 @@ class ListUserItem extends ListItem {
 
 /// Controller used for paginating data in [ChannelListView]
 class UserListController {
+  VoidCallback loadData;
   VoidCallback paginateData;
 }