Reload section if total number of rooms changes, fixes #5448

Riot/Modules/Common/Recents/Model/RecentsSectionUpdate.swift

@@ -0,0 +1,40 @@
+// 
+// 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
+
+/// Object to represent a recents section update. Will be used as the `changes` parameter of `-[MXKDataSourceDelegate dataSource:didCellChange:]`method.
+@objcMembers
+class RecentsSectionUpdate: NSObject {
+
+    /// Updated section index.
+    let sectionIndex: Int
+
+    /// Flag indicating the total counts on the section have changed or not.
+    let totalCountsChanged: Bool
+
+    init(withSectionIndex sectionIndex: Int,
+         totalCountsChanged: Bool) {
+        self.sectionIndex = sectionIndex
+        self.totalCountsChanged = totalCountsChanged
+        super.init()
+    }
+
+    /// Flag indicating the section update info is valid. If `true`, only the related section at `sectionIndex` can be reloaded.
+    var isValid: Bool {
+        return sectionIndex >= 0
+    }
+}