Move the media caption composer (and Add Caption action) behind a feature flag for now. (#3560)

ElementX/Sources/Screens/Timeline/TimelineModels.swift

@@ -99,6 +99,7 @@ struct TimelineViewState: BindableState {
     var canCurrentUserRedactSelf = false
     var canCurrentUserPin = false
     var isViewSourceEnabled: Bool
+    var isCreateMediaCaptionsEnabled: Bool
     var hideTimelineMedia: Bool
         
     // The `pinnedEventIDs` are used only to determine if an item is already pinned or not.

ElementX/Sources/Screens/Timeline/TimelineViewModel.swift

@@ -81,6 +81,7 @@ class TimelineViewModel: TimelineViewModelType, TimelineViewModelProtocol {
                                                        timelineViewState: TimelineState(focussedEvent: focussedEventID.map { .init(eventID: $0, appearance: .immediate) }),
                                                        ownUserID: roomProxy.ownUserID,
                                                        isViewSourceEnabled: appSettings.viewSourceEnabled,
+                                                       isCreateMediaCaptionsEnabled: appSettings.createMediaCaptionsEnabled,
                                                        hideTimelineMedia: appSettings.hideTimelineMedia,
                                                        pinnedEventIDs: roomProxy.infoPublisher.value.pinnedEventIDs,
                                                        bindings: .init(reactionsCollapsed: [:]),
@@ -447,6 +448,10 @@ class TimelineViewModel: TimelineViewModelType, TimelineViewModelProtocol {
             .weakAssign(to: \.state.isViewSourceEnabled, on: self)
             .store(in: &cancellables)
         
+        appSettings.$createMediaCaptionsEnabled
+            .weakAssign(to: \.state.isCreateMediaCaptionsEnabled, on: self)
+            .store(in: &cancellables)
+        
         appSettings.$hideTimelineMedia
             .weakAssign(to: \.state.hideTimelineMedia, on: self)
             .store(in: &cancellables)

ElementX/Sources/Screens/Timeline/View/ItemMenu/TimelineItemMenuActionProvider.swift

@@ -16,6 +16,7 @@ struct TimelineItemMenuActionProvider {
     let pinnedEventIDs: Set<String>
     let isDM: Bool
     let isViewSourceEnabled: Bool
+    let isCreateMediaCaptionsEnabled: Bool
     let isPinnedEventsTimeline: Bool
     let emojiProvider: EmojiProviderProtocol
     
@@ -68,7 +69,7 @@ struct TimelineItemMenuActionProvider {
             if let messageItem = item as? EventBasedMessageTimelineItemProtocol, messageItem.supportsMediaCaption {
                 if messageItem.hasMediaCaption {
                     actions.append(contentsOf: [.editCaption, .removeCaption])
-                } else {
+                } else if isCreateMediaCaptionsEnabled {
                     actions.append(.addCaption)
                 }
             } else if !(item is VoiceMessageRoomTimelineItem) {

ElementX/Sources/Screens/Timeline/View/Style/TimelineItemBubbledStylerView.swift

@@ -143,6 +143,7 @@ struct TimelineItemBubbledStylerView<Content: View>: View {
                                                               pinnedEventIDs: context.viewState.pinnedEventIDs,
                                                               isDM: context.viewState.isEncryptedOneToOneRoom,
                                                               isViewSourceEnabled: context.viewState.isViewSourceEnabled,
+                                                              isCreateMediaCaptionsEnabled: context.viewState.isCreateMediaCaptionsEnabled,
                                                               isPinnedEventsTimeline: context.viewState.isPinnedEventsTimeline,
                                                               emojiProvider: context.viewState.emojiProvider)
                 TimelineItemMacContextMenu(item: timelineItem, actionProvider: provider) { action in