Display user suggestion list in fullscreen mode with shared context from UserSuggestionCoordinator

RiotSwiftUI/Modules/Room/UserSuggestion/Coordinator/UserSuggestionCoordinator.swift

@@ -30,6 +30,19 @@ struct UserSuggestionCoordinatorParameters {
     let room: MXRoom
 }
 
+/// Defines a shared context providing the ability to use a single `UserSuggestionViewModel` for multiple
+/// `UserSuggestionList` e.g. the list component can then be displayed seemlessly in both `RoomViewController`
+/// UIKit hosted context, and in Rich-Text-Editor's SwiftUI fullscreen mode, without need to reload data.
+final class UserSuggestionSharedContext: NSObject {
+    let context: UserSuggestionViewModelType.Context
+    let mediaManager: MXMediaManager
+
+    init(context: UserSuggestionViewModelType.Context, mediaManager: MXMediaManager) {
+        self.context = context
+        self.mediaManager = mediaManager
+    }
+}
+
 final class UserSuggestionCoordinator: Coordinator, Presentable {
     // MARK: - Properties
     
@@ -105,6 +118,11 @@ final class UserSuggestionCoordinator: Coordinator, Presentable {
         userSuggestionHostingController
     }
 
+    func sharedContext() -> UserSuggestionSharedContext {
+        UserSuggestionSharedContext(context: userSuggestionViewModel.sharedContext,
+                                    mediaManager: parameters.mediaManager)
+    }
+
     // MARK: - Private
 
     private func calculateViewHeight() -> CGFloat {

RiotSwiftUI/Modules/Room/UserSuggestion/Coordinator/UserSuggestionCoordinatorBridge.swift

@@ -52,6 +52,10 @@ final class UserSuggestionCoordinatorBridge: NSObject {
     func toPresentable() -> UIViewController? {
         userSuggestionCoordinator.toPresentable()
     }
+
+    func sharedContext() -> UserSuggestionSharedContext {
+        userSuggestionCoordinator.sharedContext()
+    }
 }
 
 extension UserSuggestionCoordinatorBridge: UserSuggestionCoordinatorDelegate {

RiotSwiftUI/Modules/Room/UserSuggestion/UserSuggestionViewModel.swift

@@ -27,7 +27,11 @@ class UserSuggestionViewModel: UserSuggestionViewModelType, UserSuggestionViewMo
     private let userSuggestionService: UserSuggestionServiceProtocol
     
     // MARK: Public
-    
+
+    var sharedContext: UserSuggestionViewModelType.Context {
+        return self.context
+    }
+
     var completion: ((UserSuggestionViewModelResult) -> Void)?
     
     // MARK: - Setup

RiotSwiftUI/Modules/Room/UserSuggestion/UserSuggestionViewModelProtocol.swift

@@ -17,5 +17,6 @@
 import Foundation
 
 protocol UserSuggestionViewModelProtocol {
+    var sharedContext: UserSuggestionViewModelType.Context { get }
     var completion: ((UserSuggestionViewModelResult) -> Void)? { get set }
 }