Replace FilePreviewScreen with InteractiveQuickLook. (#1187)

* Replace FilePreviewScreen with InteractiveQuickLook.

- Allows full screen presentation.
- Allows dismiss gesture to work.
- Presentation looks much better on macOS.

ElementX/Sources/Screens/RoomScreen/RoomScreenCoordinator.swift

@@ -25,7 +25,6 @@ struct RoomScreenCoordinatorParameters {
 }
 
 enum RoomScreenCoordinatorAction {
-    case presentMediaViewer(file: MediaFileHandleProxy, title: String?)
     case presentReportContent(itemID: String, senderID: String)
     case presentMediaUploadPicker(MediaPickerScreenSource)
     case presentMediaUploadPreviewScreen(URL)
@@ -67,8 +66,6 @@ final class RoomScreenCoordinator: CoordinatorProtocol {
             switch action {
             case .displayRoomDetails:
                 actionsSubject.send(.presentRoomDetails)
-            case .displayMediaViewer(let file, let title):
-                actionsSubject.send(.presentMediaViewer(file: file, title: title))
             case .displayEmojiPicker(let itemID):
                 actionsSubject.send(.presentEmojiPicker(itemID: itemID))
             case .displayReportContent(let itemID, let senderID):

ElementX/Sources/Screens/RoomScreen/RoomScreenModels.swift

@@ -20,7 +20,6 @@ import UIKit
 
 enum RoomScreenViewModelAction {
     case displayRoomDetails
-    case displayMediaViewer(file: MediaFileHandleProxy, title: String?)
     case displayEmojiPicker(itemID: String)
     case displayReportContent(itemID: String, senderID: String)
     case displayCameraPicker
@@ -115,6 +114,9 @@ struct RoomScreenViewStateBindings {
         }
     }
     
+    /// A media item that will be previewed with QuickLook.
+    var mediaPreviewItem: MediaPreviewItem?
+    
     /// Information describing the currently displayed alert.
     var alertInfo: AlertInfo<RoomScreenErrorType>?
 

ElementX/Sources/Screens/RoomScreen/RoomScreenViewModel.swift

@@ -220,7 +220,7 @@ class RoomScreenViewModel: RoomScreenViewModelType, RoomScreenViewModelProtocol
 
         switch action {
         case .displayMediaFile(let file, let title):
-            callback?(.displayMediaViewer(file: file, title: title))
+            state.bindings.mediaPreviewItem = MediaPreviewItem(file: file, title: title)
         case .none:
             break
         }

ElementX/Sources/Screens/RoomScreen/View/RoomScreen.swift

@@ -50,6 +50,7 @@ struct RoomScreen: View {
                         .environmentObject(context)
                 }
             }
+            .interactiveQuickLook(item: $context.mediaPreviewItem)
             .track(screen: .room)
             .task(id: context.viewState.roomId) {
                 // Give a couple of seconds for items to load and to see them.