Replace Mark All as Read with progress indicator. Issues #1157 and #1165

iOS/MasterTimeline/UndoAvailableAlertController.swift

@@ -0,0 +1,31 @@
+//
+//  UndoAvailableAlertController.swift
+//  NetNewsWire
+//
+//  Created by Phil Viso on 9/29/19.
+//  Copyright © 2019 Ranchero Software. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+struct UndoAvailableAlertController {
+			
+	static func alert(handler: @escaping (UIAlertAction) -> Void) -> UIAlertController {
+		let title = NSLocalizedString("Undo Available", comment: "Undo Available")
+		let message = NSLocalizedString("You can undo this and other actions with a three finger swipe to the left.",
+										comment: "Mark all articles")
+		let cancelTitle = NSLocalizedString("Cancel", comment: "Cancel")
+		let confirmTitle = NSLocalizedString("Got It", comment: "Got It")
+		
+		let alertController = UIAlertController(title: title, message: message, preferredStyle: .alert)
+		let cancelAction = UIAlertAction(title: cancelTitle, style: .cancel)
+		let markAction = UIAlertAction(title: confirmTitle, style: .default, handler: handler)
+		
+		alertController.addAction(cancelAction)
+		alertController.addAction(markAction)
+		
+		return alertController
+	}
+	
+}