Member label VoiceOver support

Signal/ConversationView/Loading/CVItemViewState.swift

@@ -426,6 +426,10 @@ struct CVItemModelBuilder: CVItemBuilding {
                     memberLabel = memberLabel?
                         .components(separatedBy: .whitespaces)
                         .joined(separator: SignalSymbol.LeadingCharacter.nonBreakingSpace.rawValue)
+
+                    if let memberLabel {
+                        itemViewState.accessibilityAuthorName = authorName + "," + memberLabel
+                    }
                 }
 
                 if shouldShowSenderName {

Signal/src/ViewControllers/ThreadSettings/ConversationHeaderBuilder.swift

@@ -532,6 +532,10 @@ struct ConversationHeaderBuilder {
         memberLabelLabel.numberOfLines = 0
         memberLabelLabel.highlightRange = NSRange(location: 0, length: (label as NSString).length)
         memberLabelLabel.highlightFont = .dynamicTypeSubheadlineClamped
+        memberLabelLabel.axLabelPrefix = OWSLocalizedString(
+            "MEMBER_LABEL_AX_PREFIX",
+            comment: "Accessibility prefix for member labels.",
+        )
 
         subviews.append(memberLabelLabel)
         hasSubtitleLabel = true

Signal/translations/en.lproj/Localizable.strings

@@ -4996,6 +4996,9 @@
 /* Label for an action to add a member label */
 "MEMBER_LABEL_ADD" = "Add a Member Label";
 
+/* Accessibility prefix for member labels. */
+"MEMBER_LABEL_AX_PREFIX" = "Member label: ";
+
 /* Heading shown above the preview of a message bubble with the edited member label. */
 "MEMBER_LABEL_PREVIEW_HEADING" = "Preview";
 

SignalUI/ConversationView/CVCapsuleLabel.swift

@@ -13,6 +13,7 @@ import SignalServiceKit
 public class CVCapsuleLabel: UILabel {
     public var highlightRange: NSRange?
     public var highlightFont: UIFont?
+    public var axLabelPrefix: String?
 
     private static let horizontalInset: CGFloat = 6
     private static let verticalInset: CGFloat = 1
@@ -94,4 +95,14 @@ public class CVCapsuleLabel: UILabel {
             height: size.height + Self.verticalInset * 2,
         )
     }
+
+    override public var accessibilityLabel: String? {
+        get {
+            if let axLabelPrefix, let text = self.text {
+                return axLabelPrefix + text
+            }
+            return super.accessibilityLabel
+        }
+        set { super.accessibilityLabel = newValue }
+    }
 }

SignalUI/RecipientPickers/ContactCellView.swift

@@ -240,6 +240,10 @@ public class ContactCellView: ManualStackView {
                     memberLabelLabel.numberOfLines = 0
                     memberLabelLabel.highlightRange = NSRange(location: 0, length: (memberLabel.label as NSString).length)
                     memberLabelLabel.highlightFont = .dynamicTypeCaption1Clamped
+                    memberLabelLabel.axLabelPrefix = OWSLocalizedString(
+                        "MEMBER_LABEL_AX_PREFIX",
+                        comment: "Accessibility prefix for member labels.",
+                    )
 
                     textStackSubviews.append(memberLabelLabel)
                     let memberLabelSize = memberLabelLabel.highlightLabelSize()

SignalUI/ViewControllers/InteractiveSheetViewController.swift

@@ -765,6 +765,14 @@ open class InteractiveSheetViewController: OWSViewController {
         isInInteractiveTransition = false
         panningScrollView?.showsVerticalScrollIndicator = true
     }
+
+    override public func accessibilityPerformEscape() -> Bool {
+        if presentingViewController != nil {
+            dismiss(animated: true)
+            return true
+        }
+        return super.accessibilityPerformEscape()
+    }
 }
 
 // MARK: -

SignalUI/Views/ProfileDetailLabel.swift

@@ -182,7 +182,7 @@ public extension ProfileDetailLabel {
                 },
             )
         }
-        return ProfileDetailLabel(
+        let detailLabelView = ProfileDetailLabel(
             title: label,
             icon: .memberLabel,
             font: .dynamicTypeBody,
@@ -191,6 +191,13 @@ public extension ProfileDetailLabel {
                 tapAction()
             },
         )
+        detailLabelView.isAccessibilityElement = true
+        detailLabelView.accessibilityLabel = OWSLocalizedString(
+            "MEMBER_LABEL_AX_PREFIX",
+            comment: "Accessibility prefix for member labels.",
+        ) + label
+
+        return detailLabelView
     }
 
     static func verified(