Show label when attachments are hidden in timelines

Tusker/Screens/Timeline/TimelineViewController.swift

@@ -192,6 +192,7 @@ class TimelineViewController: UIViewController, TimelineLikeCollectionViewContro
     // separate method because InstanceTimelineViewController needs to be able to customize it
     func configureStatusCell(_ cell: TimelineStatusCollectionViewCell, id: String, state: CollapseState, filterResult: Filterer.Result, precomputedContent: NSAttributedString?) {
         cell.delegate = self
+        cell.showAttachmentsInline = Preferences.shared.showAttachmentsInTimeline
         if case .home = timeline {
             cell.showFollowedHashtags = true
         } else {

Tusker/Views/Attachments/AttachmentsContainerView.swift

@@ -30,8 +30,8 @@ class AttachmentsContainerView: UIView {
         }
     }
     
-    var blurView: UIVisualEffectView?
-    var hideButtonView: UIVisualEffectView?
+    private var blurView: UIVisualEffectView?
+    private var hideButtonView: UIVisualEffectView?
     var contentHidden: Bool! {
         didSet {
             guard let blurView = blurView,
@@ -42,6 +42,8 @@ class AttachmentsContainerView: UIView {
         }
     }
     
+    private var label: UILabel?
+    
     override init(frame: CGRect) {
         super.init(frame: frame)
         commonInit()
@@ -67,22 +69,25 @@ class AttachmentsContainerView: UIView {
     
     // MARK: - User Interaface
     
-    func updateUI(attachments: [Attachment]) {
+    func updateUI(attachments: [Attachment], labelOnly: Bool = false) {
         let newTokens = attachments.map { AttachmentToken(attachment: $0) }
         
+        guard !labelOnly else {
+            self.attachments = attachments
+            self.attachmentTokens = newTokens
+            updateLabel(attachments: attachments)
+            return
+        }
+        
         guard self.attachmentTokens != newTokens else {
-            self.isHidden = attachments.isEmpty
             return
         }
         
         self.attachments = attachments
         self.attachmentTokens = newTokens
         
-        attachmentViews.allObjects.forEach { $0.removeFromSuperview() }
-        attachmentViews.removeAllObjects()
-        attachmentStacks.allObjects.forEach { $0.removeFromSuperview() }
-        attachmentStacks.removeAllObjects()
-        moreView?.removeFromSuperview()
+        removeAttachmentViews()
+        hideButtonView?.isHidden = false
         
         var accessibilityElements = [Any]()
 
@@ -285,6 +290,14 @@ class AttachmentsContainerView: UIView {
         self.accessibilityElements = accessibilityElements
     }
     
+    private func removeAttachmentViews() {
+        attachmentViews.allObjects.forEach { $0.removeFromSuperview() }
+        attachmentViews.removeAllObjects()
+        attachmentStacks.allObjects.forEach { $0.removeFromSuperview() }
+        attachmentStacks.removeAllObjects()
+        moreView?.removeFromSuperview()
+    }
+    
     private func createAttachmentView(index: Int, hSize: RelativeSize, vSize: RelativeSize) -> AttachmentView {
         let attachmentView = AttachmentView(attachment: attachments[index], index: index)
         attachmentView.delegate = delegate
@@ -397,6 +410,35 @@ class AttachmentsContainerView: UIView {
         ])
     }
     
+    private func updateLabel(attachments: [Attachment]) {
+        removeAttachmentViews()
+        blurView?.isHidden = true
+        hideButtonView?.isHidden = true
+        aspectRatioConstraint?.isActive = false
+        
+        if label == nil {
+            if attachments.isEmpty {
+                accessibilityElements = []
+                return
+            }
+            label = UILabel()
+            label!.font = .preferredFont(forTextStyle: .body)
+            label!.adjustsFontForContentSizeCategory = true
+            label!.textColor = .secondaryLabel
+            label!.translatesAutoresizingMaskIntoConstraints = false
+            addSubview(label!)
+            NSLayoutConstraint.activate([
+                label!.leadingAnchor.constraint(equalTo: leadingAnchor),
+                label!.trailingAnchor.constraint(equalTo: trailingAnchor),
+                label!.topAnchor.constraint(equalTo: topAnchor),
+                label!.bottomAnchor.constraint(equalTo: bottomAnchor),
+            ])
+        }
+        
+        label!.text = "\(attachments.count) attachment\(attachments.count == 1 ? "" : "s")"
+        accessibilityElements = [label!]
+    }
+    
     // MARK: - Interaction
     
     @objc func blurViewTapped() {

Tusker/Views/Status/StatusContentContainer.swift

@@ -14,8 +14,8 @@ protocol StatusContentPollView: UIView {
 
 class StatusContentContainer<ContentView: ContentTextView, PollView: StatusContentPollView>: UIView {
     
-    private var useTopSpacer = false
-    private let topSpacer = UIView().configure {
+    private let useTopSpacer: Bool
+    private lazy var topSpacer = UIView().configure {
         $0.backgroundColor = .clear
         // other 4pt is provided by this view's own spacing
         $0.heightAnchor.constraint(equalToConstant: 4).isActive = true

Tusker/Views/Status/TimelineStatusCollectionViewCell.swift

@@ -297,6 +297,7 @@ class TimelineStatusCollectionViewCell: UICollectionViewListCell, StatusCollecti
     var showReplyIndicator = true
     var showPinned: Bool = false
     var showFollowedHashtags: Bool = false
+    var showAttachmentsInline = true
     
     // alas these need to be internal so they're accessible from the protocol extensions
     var statusID: String!
@@ -646,12 +647,8 @@ class TimelineStatusCollectionViewCell: UICollectionViewListCell, StatusCollecti
     }
     
     func updateAttachmentsUI(status: StatusMO) {
-        if Preferences.shared.showAttachmentsInTimeline {
-            attachmentsView.delegate = self
-            attachmentsView.updateUI(attachments: status.attachments)
-        } else {
-            attachmentsView.isHidden = true
-        }
+        attachmentsView.delegate = self
+        attachmentsView.updateUI(attachments: status.attachments, labelOnly: !showAttachmentsInline)
     }
     
     func estimateContentHeight() -> CGFloat {