Hide the space filters button when not part of any spaces

Also automatically dismiss a selected filter if no longer available i.e. the space has been left.

ElementX/Sources/Screens/HomeScreen/HomeScreenModels.swift

@@ -112,6 +112,7 @@ struct HomeScreenViewState: BindableState {
     
     var spaceFiltersEnabled = false
     
+    var shouldShowSpaceFilters = false
     var selectedSpaceFilter: SpaceServiceFilter?
     
     var visibleRooms: [HomeScreenRoom] {

ElementX/Sources/Screens/HomeScreen/HomeScreenViewModel.swift

@@ -28,6 +28,7 @@ class HomeScreenViewModel: HomeScreenViewModelType, HomeScreenViewModelProtocol
         actionsSubject.eraseToAnyPublisher()
     }
     
+    // swiftlint:disable:next function_body_length
     init(userSession: UserSessionProtocol,
          selectedRoomPublisher: CurrentValuePublisher<String?, Never>,
          appSettings: AppSettings,
@@ -95,6 +96,21 @@ class HomeScreenViewModel: HomeScreenViewModelType, HomeScreenViewModelProtocol
             }
             .store(in: &cancellables)
         
+        userSession.clientProxy.spaceService.spaceFilterPublisher
+            .receive(on: DispatchQueue.main)
+            .sink { [weak self] filters in
+                guard let self else { return }
+                
+                state.shouldShowSpaceFilters = !filters.isEmpty
+                
+                if let selectedSpaceFilter = spaceFilterSubject.value,
+                   !filters.contains(selectedSpaceFilter) {
+                    // Clear the spaces filter if the space has been left.
+                    spaceFilterSubject.send(nil)
+                }
+            }
+            .store(in: &cancellables)
+        
         selectedRoomPublisher
             .weakAssign(to: \.state.selectedRoomID, on: self)
             .store(in: &cancellables)

ElementX/Sources/Screens/HomeScreen/View/HomeScreen.swift

@@ -66,7 +66,7 @@ struct HomeScreen: View {
             }
         }
         
-        if context.viewState.spaceFiltersEnabled {
+        if context.viewState.spaceFiltersEnabled, context.viewState.shouldShowSpaceFilters {
             if #available(iOS 26, *) {
                 ToolbarSpacer(.fixed, placement: .primaryAction)
             }