Try to register for remote notifications when feed inspector appears

Mac/Inspector/WebFeedInspectorViewController.swift

@@ -50,6 +50,10 @@ final class WebFeedInspectorViewController: NSViewController, Inspector {
 		NotificationCenter.default.addObserver(self, selector: #selector(imageDidBecomeAvailable(_:)), name: .ImageDidBecomeAvailable, object: nil)
 	}
 	
+	override func viewDidAppear() {
+		updateNotificationSettings()
+	}
+	
 	// MARK: Actions
 	@IBAction func isNotifyAboutNewArticlesChanged(_ sender: Any) {
 		feed?.isNotifyAboutNewArticles = (isNotifyAboutNewArticlesCheckBox?.state ?? .off) == .on ? true : false
@@ -136,6 +140,17 @@ private extension WebFeedInspectorViewController {
 		urlTextField?.stringValue = feed?.url ?? ""
 	}
 
+	func updateNotificationSettings() {
+		UNUserNotificationCenter.current().getNotificationSettings { (settings) in
+			DispatchQueue.main.async {
+				self.userNotificationSettings = settings
+				if settings.authorizationStatus == .authorized {
+					NSApplication.shared.registerForRemoteNotifications()
+				}
+			}
+		}
+	}
+
 	func updateNotifyAboutNewArticles() {
 		isNotifyAboutNewArticlesCheckBox?.state = (feed?.isNotifyAboutNewArticles ?? false) ? .on : .off
 	}