Add accessibility labels to bar button image items.

iOS/Extensions/UIBarButtonItem-Extensions.swift

@@ -0,0 +1,46 @@
+//
+//  UIBarButtonItem-Extensions.swift
+//  NetNewsWire-iOS
+//
+//  Created by Maurice Parker on 4/27/19.
+//  Copyright © 2019 Ranchero Software. All rights reserved.
+//
+
+import UIKit
+
+public extension UIBarButtonItem {
+	
+	@IBInspectable var accEnabled: Bool {
+		get {
+			return isAccessibilityElement
+		}
+		set {
+			isAccessibilityElement = newValue
+		}
+	}
+	
+	@IBInspectable var accLabelText: String? {
+		get {
+			return accessibilityLabel
+		}
+		set {
+			accessibilityLabel = newValue
+		}
+	}
+	
+	var isHidden: Bool {
+		get {
+			return tintColor == UIColor.clear
+		}
+		set(hide) {
+			if hide {
+				isEnabled = false
+				tintColor = UIColor.clear
+			} else {
+				isEnabled = true
+				tintColor = nil 
+			}
+		}
+	}
+	
+}