Break retain cycle between split controller and indicator presenters

Riot/Modules/SplitView/SplitViewUserIndicatorPresentationContext.swift

@@ -0,0 +1,46 @@
+// 
+// Copyright 2022 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
+import CommonKit
+
+class SplitViewUserIndicatorPresentationContext: UserIndicatorPresentationContext {
+    private weak var splitViewController: UISplitViewController?
+    private weak var tabBarCoordinator: TabBarCoordinator?
+    private weak var detailNavigationController: UINavigationController?
+    
+    init(
+        splitViewController: UISplitViewController,
+        tabBarCoordinator: TabBarCoordinator,
+        detailNavigationController: UINavigationController
+    ) {
+        self.splitViewController = splitViewController
+        self.tabBarCoordinator = tabBarCoordinator
+        self.detailNavigationController = detailNavigationController
+    }
+    
+    var indicatorPresentingViewController: UIViewController? {
+        guard
+            let splitViewController = splitViewController,
+            let tabBarCoordinator = tabBarCoordinator,
+            let detailNavigationController = detailNavigationController
+        else {
+            MXLog.debug("[SplitViewCoordinator]: Missing tab bar or detail coordinator, cannot update user indicator presenter")
+            return nil
+        }
+        return splitViewController.isCollapsed ? tabBarCoordinator.toPresentable() : detailNavigationController
+    }
+}