Dactyloidae iOS initial commit

mobile/ios/Shared/Accessibility.swift

@@ -0,0 +1,41 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import UIKit
+
+public protocol AccessibilityActionsSource: class {
+    func accessibilityCustomActionsForView(_ view: UIView) -> [UIAccessibilityCustomAction]?
+}
+
+open class AccessibleAction {
+    open let name: String
+    open let handler: () -> Bool
+
+    public init(name: String, handler: @escaping () -> Bool) {
+        self.name = name
+        self.handler = handler
+    }
+}
+
+extension AccessibleAction { // UIAccessibilityCustomAction
+    @objc private func SELperformAccessibilityAction() -> Bool {
+        return handler()
+    }
+
+    public var accessibilityCustomAction: UIAccessibilityCustomAction {
+        return UIAccessibilityCustomAction(name: name, target: self, selector: #selector(AccessibleAction.SELperformAccessibilityAction))
+    }
+}
+
+extension AccessibleAction { // UIAlertAction
+    private var alertActionHandler: (UIAlertAction!) -> Void {
+        return { (_: UIAlertAction!) -> Void in
+            _ = self.handler()
+        }
+    }
+
+    public func alertAction(style: UIAlertActionStyle) -> UIAlertAction {
+        return UIAlertAction(title: name, style: style, handler: alertActionHandler)
+    }
+}