Joining a space from the room flow. (#4563)

* Add the More menu to SpaceScreen.

And a simple way to leave a space for testing.

* Start a space flow when accepting a space invite from the room flow.

* Minimise the tab bar on iOS 26 when scrolling down.

* Enable spaces by default!

ElementX/Sources/Screens/Spaces/SpaceScreen/SpaceScreenCoordinator.swift

@@ -22,6 +22,7 @@ enum SpaceScreenCoordinatorAction {
     case selectSpace(SpaceRoomListProxyProtocol)
     case selectUnjoinedSpace(SpaceRoomProxyProtocol)
     case selectRoom(roomID: String)
+    case leftSpace
 }
 
 final class SpaceScreenCoordinator: CoordinatorProtocol {
@@ -57,6 +58,8 @@ final class SpaceScreenCoordinator: CoordinatorProtocol {
                 actionsSubject.send(.selectUnjoinedSpace(spaceRoomProxy))
             case .selectRoom(let roomID):
                 actionsSubject.send(.selectRoom(roomID: roomID))
+            case .leftSpace:
+                actionsSubject.send(.leftSpace)
             }
         }
         .store(in: &cancellables)

ElementX/Sources/Screens/Spaces/SpaceScreen/SpaceScreenModels.swift

@@ -11,11 +11,14 @@ enum SpaceScreenViewModelAction {
     case selectSpace(SpaceRoomListProxyProtocol)
     case selectUnjoinedSpace(SpaceRoomProxyProtocol)
     case selectRoom(roomID: String)
+    case leftSpace
 }
 
 struct SpaceScreenViewState: BindableState {
     let space: SpaceRoomProxyProtocol
     
+    var permalink: URL?
+    
     var isPaginating = false
     var rooms: [SpaceRoomProxyProtocol]
     var selectedSpaceRoomID: String?
@@ -30,4 +33,5 @@ struct SpaceScreenViewStateBindings { }
 
 enum SpaceScreenViewAction {
     case spaceAction(SpaceRoomCell.Action)
+    case leaveSpace
 }

ElementX/Sources/Screens/Spaces/SpaceScreen/SpaceScreenViewModel.swift

@@ -60,6 +60,13 @@ class SpaceScreenViewModel: SpaceScreenViewModelType, SpaceScreenViewModelProtoc
         selectedSpaceRoomPublisher
             .weakAssign(to: \.state.selectedSpaceRoomID, on: self)
             .store(in: &cancellables)
+        
+        Task {
+            if case let .joined(roomProxy) = await userSession.clientProxy.roomForIdentifier(spaceRoomListProxy.spaceRoomProxy.id),
+               case let .success(permalinkURL) = await roomProxy.matrixToPermalink() {
+                state.permalink = permalinkURL
+            }
+        }
     }
     
     // MARK: - Public
@@ -81,6 +88,15 @@ class SpaceScreenViewModel: SpaceScreenViewModelType, SpaceScreenViewModelProtoc
             }
         case .spaceAction(.join(let spaceRoomProxy)):
             Task { await join(spaceRoomProxy) }
+        case .leaveSpace:
+            #if DEBUG
+            Task { // Temporary implementation to make joining a space easier to test.
+                if case let .joined(roomProxy) = await clientProxy.roomForIdentifier(spaceRoomListProxy.spaceRoomProxy.id),
+                   case .success = await roomProxy.leaveRoom() {
+                    actionsSubject.send(.leftSpace)
+                }
+            }
+            #endif
         }
     }
     

ElementX/Sources/Screens/Spaces/SpaceScreen/View/SpaceScreen.swift

@@ -42,6 +42,7 @@ struct SpaceScreen: View {
         }
     }
     
+    @ToolbarContentBuilder
     var toolbar: some ToolbarContent {
         // Use the same trick as the RoomScreen for a leading title view that
         // also hides the navigation title.
@@ -50,6 +51,22 @@ struct SpaceScreen: View {
                            roomAvatar: context.viewState.space.avatar,
                            mediaProvider: context.mediaProvider)
         }
+        
+        ToolbarItemGroup(placement: .secondaryAction) {
+            if let permalink = context.viewState.permalink {
+                Section {
+                    ShareLink(item: permalink) {
+                        Label(L10n.actionShare, icon: \.shareIos)
+                    }
+                }
+            }
+            
+            Section {
+                Button(role: .destructive) { context.send(viewAction: .leaveSpace) } label: {
+                    Label(L10n.actionLeaveSpace, icon: \.leave)
+                }
+            }
+        }
     }
 }