Add load more button

lib/controllers/room_chat_controller.dart

@@ -6,7 +6,6 @@ import "package:flutter_riverpod/flutter_riverpod.dart";
 import "package:fluttertagger/fluttertagger.dart";
 import "package:nexus/controllers/client_controller.dart";
 import "package:nexus/controllers/rooms_controller.dart";
-import "package:nexus/models/content/message.dart";
 import "package:nexus/models/content/reaction.dart";
 import "package:nexus/models/event.dart";
 import "package:nexus/models/requests/get_related_events_request.dart";
@@ -38,14 +37,9 @@ class RoomChatController extends AsyncNotifier<IList<Event>> {
       await ref.read(RoomsController.provider.notifier).addState(roomId, state);
     }
 
-    // While there are under 5 messages or under 20 events, try to load
-    // more messages until there's no more or the conditions are met.
-    if (room.hasMore &&
-        (room.events.values
-                    .where((event) => event.content is MessageContent)
-                    .length <
-                5 ||
-            room.timeline.length < 20)) {
+    // While there are under 20 events, try to load more
+    // until there's no more or the conditions are met.
+    if (room.hasMore && room.timeline.length < 20) {
       loadOlder();
     }
 

lib/widgets/room_chat.dart

@@ -319,6 +319,8 @@ class RoomChat extends HookConsumerWidget {
       ].toIList();
     }
 
+    final controllerData = ref.watch(controllerProvider);
+
     return Scaffold(
       appBar: RoomAppbar(
         roomId: roomId,
@@ -337,7 +339,7 @@ class RoomChat extends HookConsumerWidget {
                 Positioned.fill(
                   child: Padding(
                     padding: EdgeInsets.symmetric(horizontal: 12),
-                    child: switch (ref.watch(controllerProvider)) {
+                    child: switch (controllerData) {
                       AsyncData(:final value) ||
                       AsyncLoading(:final value?) => CustomScrollView(
                         reverse: true,
@@ -346,6 +348,7 @@ class RoomChat extends HookConsumerWidget {
                           SliverPadding(
                             padding: EdgeInsetsGeometry.only(bottom: 64),
                           ),
+
                           SuperSliverList.builder(
                             listController: listController.value,
                             itemCount: value.length,
@@ -391,6 +394,20 @@ class RoomChat extends HookConsumerWidget {
                               );
                             },
                           ),
+
+                          SliverToBoxAdapter(
+                            child: Padding(
+                              padding: EdgeInsets.only(bottom: 36),
+                              child: Center(
+                                child: controllerData is AsyncLoading
+                                    ? Loading()
+                                    : ElevatedButton(
+                                        onPressed: notifier.loadOlder,
+                                        child: Text("Load More"),
+                                      ),
+                              ),
+                            ),
+                          ),
                         ],
                       ),
                       AsyncLoading() => Loading(),