Accessibility update for Label and LabelWithInternalButton.

MVMCoreUI/Atoms/Views/Label.swift

@@ -40,22 +40,15 @@ public typealias ActionBlock = () -> Void
     //------------------------------------------------------
     
     public var clauses: [ActionableClause] = [] {
-        didSet {
+        didSet { isUserInteractionEnabled = !clauses.isEmpty }
-            isUserInteractionEnabled = !clauses.isEmpty
-            
-            // Accessibility
-            let element = UIAccessibilityElement(accessibilityContainer: self)
-            element.accessibilityFrameInContainerSpace = convert(boundingRect(forCharacterRange: clauses.last!.range!), to: nil) //CGRect(x: 10, y: 10, width: 100, height: 30)
-            element.accessibilityLabel = "Testing"
-            element.accessibilityTraits = .button
-            accessibilityElements?.append(element)
-        }
     }
     
     /// Used for tappable links in the text.
     public struct ActionableClause {
         var range: NSRange?
         var actionBlock: ActionBlock?
+        var text: String?
+        var hash: Int = 0
         
         func performAction() {
             actionBlock?()
@@ -72,8 +65,7 @@ public typealias ActionBlock = () -> Void
         numberOfLines = 0
         lineBreakMode = .byWordWrapping
         translatesAutoresizingMaskIntoConstraints = false
-        isAccessibilityElement = false
+        accessibilityCustomActions = []
-        accessibilityElements = []
     }
     
     @objc public init() {
@@ -267,10 +259,14 @@ public typealias ActionBlock = () -> Void
                     guard let actionLabel = label as? Label else { continue }
                     
                     actionLabel.addActionAttributes(range: range, string: attributedString)
-                    actionLabel.clauses.append(ActionableClause(range: range,
+                    let accessibleAction = actionLabel.customAccessibilityAction(range: range)
-                                                    actionBlock: actionLabel.createActionBlockFrom(actionMap: json,
+                    let actionBlock = actionLabel.createActionBlockFrom(actionMap: json, additionalData: additionalData, delegateObject: delegate)
-                                                                                       additionalData: additionalData,
+                    let actionableClause = ActionableClause(range: range,
-                                                                                       delegateObject: delegate)))
+                                                            actionBlock: actionBlock,
+                                                            text: accessibleAction?.name ?? "",
+                                                            hash: accessibleAction?.hash ?? -1)
+                    actionLabel.clauses.append(actionableClause)
+
                 default:
                     continue
                 }
@@ -416,7 +412,7 @@ extension Label {
         originalAttributedString = nil
         hasAttachmentImage = false
         styleB2(true)
-        accessibilityElements = []
+        accessibilityCustomActions = []
     }
     
     @objc public func setWithJSON(_ json: [AnyHashable: Any]?, delegateObject: MVMCoreUIDelegateObject?, additionalData: [AnyHashable: Any]?) {
@@ -457,7 +453,7 @@ extension Label {
         }
         
         self.attributedText = mutableAttributedString
-//        accessibleClauses = []
+        accessibilityElements = []
         clauses = []
     }
     
@@ -495,7 +491,9 @@ extension Label {
     @objc public func addTappableLinkAttribute(range: NSRange, actionBlock: @escaping ActionBlock) {
         
         setActionAttributes(range: range)
-        clauses.append(ActionableClause(range: range, actionBlock: actionBlock))
+        let actionText = NSString(string: text!).substring(with: range)
+        let accessibleAction = customAccessibilityAction(range: range)
+        clauses.append(ActionableClause(range: range, actionBlock: actionBlock, text: actionText, hash: accessibleAction!.hash))
     }
     
     /**
@@ -511,10 +509,10 @@ extension Label {
     @objc public func addTappableLinkAttribute(range: NSRange, actionMap: [AnyHashable: Any]?, additionalData: [AnyHashable: Any]?, delegateObject: DelegateObject?) {
         
         setActionAttributes(range: range)
-        clauses.append(ActionableClause(range: range,
+        let actionText = NSString(string: text!).substring(with: range)
-                                        actionBlock: createActionBlockFrom(actionMap: actionMap,
+        let accessibleAction = customAccessibilityAction(range: range)
-                                                                           additionalData: additionalData,
+        let actionBlock = createActionBlockFrom(actionMap: actionMap, additionalData: additionalData, delegateObject: delegateObject)
-                                                                           delegateObject: delegateObject)))
+        clauses.append(ActionableClause(range: range, actionBlock: actionBlock, text: actionText, hash: accessibleAction!.hash))
     }
     
     @objc private func textLinkTapped(_ gesture: UITapGestureRecognizer) {
@@ -574,66 +572,28 @@ extension UITapGestureRecognizer {
 // MARK: - Accessibility
 extension Label {
     
-    override open func accessibilityActivate() -> Bool {
+    func customAccessibilityAction(range: NSRange) -> UIAccessibilityCustomAction? {
-//        let point = accessibilityActivationPoint
-        return true
-    }
         
-    open override func accessibilityElementDidBecomeFocused() {
+        guard let text = text else { return nil }
         
-    }
+        if accessibilityHint == nil {
-    
+            accessibilityHint = MVMCoreUIUtility.hardcodedString(withKey: "plan_selector_int_swipe_action_hint")
-    open override func accessibilityElementCount() -> Int {
-        return accessibilityElements?.count ?? 0
-    }
-    
-    open override func accessibilityElement(at index: Int) -> Any? {
-        return accessibilityElements?[index]
-    }
-    
-    open override func index(ofAccessibilityElement element: Any) -> Int {
-        return 0//accessibilityElements?.firstIndex(of: element as! UIAccessibilityElement)!
-    }
-    
-    /*
-    var accessibleClauses: [UIAccessibilityElement] {
-
-        var elements = [UIAccessibilityElement]()
-        for clause in clauses {
-            let element = UIAccessibilityElement(accessibilityContainer: self)
-//            let rect = CGRect(x: 10, y: 10, width: 100, height: 30)
-            element.accessibilityFrame = convert(self.frame, to: nil)
-//            element.accessibilityFrame = convert(conceptualSize(range: clause.range)!, to: nil)
-//            element.accessibilityFrameInContainerSpace = rect
-            element.accessibilityLabel = "Testing"
-            element.accessibilityTraits = .button
-            element.isAccessibilityElement = true
-            elements.append(element)
         }
-        accessibilityElements = elements
+        
-        return elements
+        let actionText = NSString(string: text).substring(with: range)
+        let accessibleAction = UIAccessibilityCustomAction(name: actionText, target: self, selector: #selector(accessibilityCustomAction(_:)))
+        accessibilityCustomActions?.append(accessibleAction)
+        
+        return accessibleAction
     }
-    */
     
-    func boundingRect(forCharacterRange range: NSRange) -> CGRect? {
+    @objc public func accessibilityCustomAction(_ action: UIAccessibilityCustomAction) {
         
-        guard let attributedText = attributedText else { return nil }
+        for clause in clauses {
-        
+            if action.hash == clause.hash {
-        let textStorage = NSTextStorage(attributedString: attributedText)
+                clause.performAction()
-        let layoutManager = NSLayoutManager()
+                return
-        
+            }
-        textStorage.addLayoutManager(layoutManager)
+        }
-        
-        let textContainer = NSTextContainer(size: bounds.size)
-        textContainer.lineFragmentPadding = 0.0
-        
-        layoutManager.addTextContainer(textContainer)
-        
-        var glyphRange = NSRange()
-        
-        // Convert the range for glyphs.
-        layoutManager.characterRange(forGlyphRange: range, actualGlyphRange: &glyphRange)
-        
-        return layoutManager.boundingRect(forGlyphRange: glyphRange, in: textContainer)
     }
 }

MVMCoreUI/Atoms/Views/LabelWithInternalButton.swift

@@ -64,7 +64,11 @@ public typealias CoreObjectActionLoadPresentDelegate = MVMCoreActionDelegateProt
             if newActionBlock == nil {
                 label?.clearActionableClauses()
             } else {
-                label?.clauses = [Label.ActionableClause(range: actionRange, actionBlock: newActionBlock)]
+                guard let label = label else { return }
+                
+                let accessibleAction = UIAccessibilityCustomAction(name: actionText ?? "", target: label, selector: #selector(label.accessibilityCustomAction(_:)))
+                label.clauses = [Label.ActionableClause(range: actionRange, actionBlock: newActionBlock, text: actionText ?? "", hash: accessibleAction.hash)]
+                label.accessibilityCustomActions = [accessibleAction]
             }
         }
     }

MVMCoreUI/SupportingFiles/Strings/en.lproj/Localizable.strings

@@ -8,6 +8,7 @@
 
 //// Accessibility
 "AccCloseButton" = "Close";
+"plan_selector_int_swipe_action_hint" = "swipe up or down to select action, then double tap to select.";
 // Tab
 "AccTab" = ", tab";
 "AccTabHint" = "Double tap to select.";