         ToastManager.showGenericError()
     }
 
+    func textViewDidChange(_ textView: UITextView) {
+        navigationItem.rightBarButtonItem?.isEnabled = !textView.text.isEmpty
+    }
+
 }

    func didCancel(viewController: EditCommentViewController)
}

class EditCommentViewController: UIViewController {

    weak var delegate: EditCommentViewControllerDelegate?


        self.originalMarkdown = markdown
        super.init(nibName: nil, bundle: nil)
        textView.text = markdown
        textView.delegate = self
    }

    required init?(coder aDecoder: NSCoder) {
