diff --git a/Riot/Modules/Room/Views/BubbleCells/Styles/RoomCellLayoutUpdaterProtocol.swift b/Riot/Modules/Room/Views/BubbleCells/Styles/RoomCellLayoutUpdaterProtocol.swift
new file mode 100644
index 000000000..8b56c19e3
--- /dev/null
+++ b/Riot/Modules/Room/Views/BubbleCells/Styles/RoomCellLayoutUpdaterProtocol.swift
@@ -0,0 +1,28 @@
+// 
+// Copyright 2021 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Foundation
+
+/// Enables to setup or update a room timeline cell view
+@objc
+protocol RoomCellLayoutUpdaterProtocol: AnyObject {
+    
+    func updateLayoutIfNeeded(for cell: MXKRoomBubbleTableViewCell, andCellData cellData: MXKRoomBubbleCellData)
+            
+    func setupLayout(forIncomingTextMessageCell cell: MXKRoomBubbleTableViewCell)
+    
+    func setupLayout(forOutgoingTextMessageCell cell: MXKRoomBubbleTableViewCell)
+}