Add accessibility description/action to status edit history entry

Tusker/Screens/Status Edit History/StatusEditCollectionViewCell.swift

@@ -91,8 +91,76 @@ class StatusEditCollectionViewCell: UICollectionViewListCell {
         fatalError("init(coder:) has not been implemented")
     }
     
-    // todo: accessibility
+    // MARK: Accessibility
     
+    override var isAccessibilityElement: Bool {
+        get { true }
+        set {}
+    }
+    
+    override var accessibilityAttributedLabel: NSAttributedString? {
+        get {
+            var str: AttributedString = ""
+            if statusState.collapsed ?? false {
+                if !edit.spoilerText.isEmpty {
+                    str += AttributedString(edit.spoilerText)
+                    str += ", "
+                }
+                str += "collapsed"
+            } else {
+                str += AttributedString(contentContainer.contentTextView.attributedText)
+                
+                if edit.attachments.count > 0 {
+                    let includeDescriptions: Bool
+                    switch Preferences.shared.attachmentBlurMode {
+                    case .useStatusSetting:
+                        includeDescriptions = !Preferences.shared.blurMediaBehindContentWarning || edit.spoilerText.isEmpty
+                    case .always:
+                        includeDescriptions = true
+                    case .never:
+                        includeDescriptions = false
+                    }
+                    if includeDescriptions {
+                        if edit.attachments.count == 1 {
+                            let attachment = edit.attachments[0]
+                            let desc = attachment.description?.isEmpty == false ? attachment.description! : "no description"
+                            str += AttributedString(", attachment: \(desc)")
+                        } else {
+                            for (index, attachment) in edit.attachments.enumerated() {
+                                let desc = attachment.description?.isEmpty == false ? attachment.description! : "no description"
+                                str += AttributedString(", attachment \(index + 1): \(desc)")
+                            }
+                        }
+                    } else {
+                        str += AttributedString(", \(edit.attachments.count) attachment\(edit.attachments.count == 1 ? "" : "s")")
+                    }
+                }
+                if edit.poll != nil {
+                    str += ", poll"
+                }
+            }
+            return NSAttributedString(str)
+        }
+        set {}
+    }
+    
+    override var accessibilityHint: String? {
+        get {
+            if statusState.collapsed ?? false {
+                return "Double tap to expand the post."
+            } else {
+                return nil
+            }
+        }
+        set {}
+    }
+    
+    override func accessibilityActivate() -> Bool {
+        if statusState.collapsed ?? false {
+            collapseButtonPressed()
+        }
+        return true
+    }
     
     // MARK: Configure UI