Allow previews in the timeline to include filtered galleries (#5943)

* remove the usage of the timeline kind override in favour of getting it properly from the timeline view model

* allow the previews to include gallery items filtered by the allowed types when started outside the gallery

sss

asa

* fix for actions not being forwarded to the timeline right

* pr suggestions

ElementX/Sources/Services/Timeline/TimelineController/TimelineController.swift

@@ -44,12 +44,16 @@ class TimelineController: TimelineControllerProtocol {
         activeTimelineItemProvider.kind
     }
     
+    let allowedGalleryItemTypes: [TimelineAllowedGalleryItemType]?
+    
     init(roomProxy: JoinedRoomProxyProtocol,
          timelineProxy: TimelineProxyProtocol,
          initialFocussedEventID: String?,
          timelineItemFactory: RoomTimelineItemFactoryProtocol,
          mediaProvider: MediaProviderProtocol,
-         appSettings: AppSettings) {
+         appSettings: AppSettings,
+         allowedGalleryItemTypes: [TimelineAllowedGalleryItemType]? = nil) {
+        self.allowedGalleryItemTypes = allowedGalleryItemTypes
         self.roomProxy = roomProxy
         liveTimelineItemProvider = timelineProxy.timelineItemProvider
         self.timelineItemFactory = timelineItemFactory

ElementX/Sources/Services/Timeline/TimelineController/TimelineControllerFactory.swift

@@ -71,7 +71,8 @@ struct TimelineControllerFactory: TimelineControllerFactoryProtocol {
                                                initialFocussedEventID: nil,
                                                timelineItemFactory: timelineItemFactory,
                                                mediaProvider: mediaProvider,
-                                               appSettings: appSettings))
+                                               appSettings: appSettings,
+                                               allowedGalleryItemTypes: allowedMessageTypes.allowedGalleryItemTypes))
         case .failure(let error):
             return .failure(.roomProxyError(error))
         }

ElementX/Sources/Services/Timeline/TimelineController/TimelineControllerProtocol.swift

@@ -26,7 +26,7 @@ enum TimelineControllerAction {
     }
     
     case displayMediaPreview(item: EventBasedMessageTimelineItemProtocol, timelineViewModel: TimelineViewModelKind)
-    case displayGalleryPreview(galleryItem: GalleryRoomTimelineItem, initialIndex: Int)
+    case displayGalleryPreview(galleryItem: GalleryRoomTimelineItem, timelineViewModel: TimelineViewModelKind)
     case displayLocation(StaticLocationData)
     case displayLiveLocation(sender: TimelineItemSender, initialLiveLocationShare: LiveLocationShare)
     case none
@@ -47,6 +47,9 @@ enum TimelineControllerError: Error {
 protocol TimelineControllerProtocol: Sendable {
     var timelineKind: TimelineKind { get }
     
+    /// The gallery attachments this timeline includes, or `nil` when it isn't filtered.
+    var allowedGalleryItemTypes: [TimelineAllowedGalleryItemType]? { get }
+    
     /// The currently known items, use only for setting up the intial state.
     var timelineItems: [RoomTimelineItemProtocol] { get }