change how cross-room jumping works

lib/controllers/contextual_event.dart

@@ -1,16 +0,0 @@
-import "package:flutter_riverpod/flutter_riverpod.dart";
-
-class ContextualEventController(String? _) extends Notifier<int?> {
-  @override
-  int? build() => null;
-
-  void set(int? event) => state = event;
-
-  @override
-  bool updateShouldNotify(_, _) => true;
-
-  static final provider =
-      NotifierProvider.family<ContextualEventController, int?, String?>(
-        ContextualEventController.new,
-      );
-}

lib/controllers/jump_request.dart

@@ -0,0 +1,17 @@
+import "package:flutter_riverpod/flutter_riverpod.dart";
+
+typedef JumpRequest = ({String roomId, int rowId});
+
+class JumpRequestController extends Notifier<JumpRequest?> {
+  @override
+  JumpRequest? build() => null;
+
+  void request(String roomId, int rowId) =>
+      state = (roomId: roomId, rowId: rowId);
+
+  void consume() => state = null;
+
+  static final provider = NotifierProvider<JumpRequestController, JumpRequest?>(
+    JumpRequestController.new,
+  );
+}