Refactoring: a dedicated LocalizationChangeObserver.

1Weather.xcodeproj/project.pbxproj

@@ -235,6 +235,7 @@
 		CE578FE725FB415F00E8B85D /* LocationsViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = CE578FE425FB415F00E8B85D /* LocationsViewModel.swift */; };
 		CE5F0CBC268A031800B99572 /* OneWeatherWidgetsBundle.swift in Sources */ = {isa = PBXBuildFile; fileRef = CE5F0CBB268A031800B99572 /* OneWeatherWidgetsBundle.swift */; };
 		CE6BE4942634170800626822 /* USStateCode.swift in Sources */ = {isa = PBXBuildFile; fileRef = CE6BE4932634170800626822 /* USStateCode.swift */; };
+		CE6E411426EBC0E9009829AE /* LocalizationChangeObserver.swift in Sources */ = {isa = PBXBuildFile; fileRef = CE6E411326EBC0E9009829AE /* LocalizationChangeObserver.swift */; };
 		CE7298C9267A34F3002745D0 /* BlendFIPSSource.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = CEEF40FF265E47FF00425D8F /* BlendFIPSSource.framework */; };
 		CE7298CC267A34F5002745D0 /* BlendHealthSource.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = CD3883C12657B6A10070FD6F /* BlendHealthSource.framework */; };
 		CE7298CE267A34F7002745D0 /* CoreDataStorage.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = CD3884542657BA8B0070FD6F /* CoreDataStorage.framework */; };
@@ -537,6 +538,7 @@
 		CE5F0CBB268A031800B99572 /* OneWeatherWidgetsBundle.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OneWeatherWidgetsBundle.swift; sourceTree = "<group>"; };
 		CE6BE4932634170800626822 /* USStateCode.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = USStateCode.swift; sourceTree = "<group>"; };
 		CE6E410026EB4A92009829AE /* StoreKitTestCertificate.cer */ = {isa = PBXFileReference; lastKnownFileType = file; path = StoreKitTestCertificate.cer; sourceTree = "<group>"; };
+		CE6E411326EBC0E9009829AE /* LocalizationChangeObserver.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LocalizationChangeObserver.swift; sourceTree = "<group>"; };
 		CE81A421266E289E00800EFF /* NativeAdView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NativeAdView.swift; sourceTree = "<group>"; };
 		CE849DB52638C33600DEFFBD /* OneWeatherNotificationServiceExtension.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = OneWeatherNotificationServiceExtension.appex; sourceTree = BUILT_PRODUCTS_DIR; };
 		CE849DB72638C33600DEFFBD /* NotificationService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationService.swift; sourceTree = "<group>"; };
@@ -1429,6 +1431,7 @@
 				CDA5542C25EF7C9700A2E08C /* ReusableCellProtocol.swift */,
 				CD37D404260DFFDD002669D6 /* CellFactory.swift */,
 				CD647A3626B42BA4007C27DA /* ThreadSafeDictionary.swift */,
+				CE6E411326EBC0E9009829AE /* LocalizationChangeObserver.swift */,
 			);
 			path = Common;
 			sourceTree = "<group>";
@@ -1939,6 +1942,7 @@
 				CD1DDD332602305200AC62B2 /* ForecastInfoCell.swift in Sources */,
 				CD8579792672214700CC4CDA /* UITableView+HeaderSize.swift in Sources */,
 				CDEE8AD725DA882200C289DE /* ForecastPeriodButton.swift in Sources */,
+				CE6E411426EBC0E9009829AE /* LocalizationChangeObserver.swift in Sources */,
 				CDE18DD125D166F900C80ED9 /* ForecastViewController.swift in Sources */,
 				CD39F2F525DE9571009FE398 /* ArrowButton.swift in Sources */,
 				CD37D3FE260DF726002669D6 /* SettingsCellFactory.swift in Sources */,

1Weather/Common/LocalizationChangeObserver.swift

+//
+//  LocalizationChangeObserver.swift
+//  1Weather
+//
+//  Created by Demid Merzlyakov on 10.09.2021.
+//
+
+import Foundation
+
+public class LocalizationChangeObserver: NSObject {
+    private let handler: () -> ()
+    
+    private var notificationCenter: NotificationCenter  {
+        NotificationCenter.default
+    }
+    
+    public init(handler: @escaping () -> ()) {
+        self.handler = handler
+        super.init()
+        notificationCenter.addObserver(self, selector: #selector(notificationHandler), name: .localizationChange, object: nil)
+    }
+    
+    deinit {
+        notificationCenter.removeObserver(self)
+    }
+    
+    @objc
+    private func notificationHandler() {
+        handler()
+    }
+}

1Weather/UI/View controllers/NWSAlert/NWSAlertViewController.swift

@@ -11,7 +11,7 @@ import OneWeatherAnalytics
 class NWSAlertViewController: UIViewController {
     private let coordinator: NWSAlertCoordinator
     private let viewModel: NWSAlertViewModel
-    private var localizationObserver: Any?
+    private var localizationObserver: LocalizationChangeObserver!
     
     private let tableView = UITableView()
     
@@ -35,13 +35,7 @@ class NWSAlertViewController: UIViewController {
         super.viewDidAppear(animated)
         analytics(log: .ANALYTICS_VIEW_ALERT_DETAILS)
     }
-    
-    deinit {
-        if let observer = localizationObserver {
-            NotificationCenter.default.removeObserver(observer)
-        }
-    }
-    
+
     private func close() {
         self.navigationController?.dismiss(animated: true, completion: { [weak self] in
             guard let self = self else { return }
@@ -64,9 +58,9 @@ extension NWSAlertViewController {
                                           action: #selector(handleCloseButton))
         navigationItem.leftBarButtonItem = closeButton
         
-        localizationObserver = NotificationCenter.default.addObserver(forName: .localizationChange, object: nil, queue: .main, using: { [weak self] _ in
+        localizationObserver = LocalizationChangeObserver { [weak self] in
             self?.prepareNavigationBar()
-        })
+        }
     }
     
     func prepareNavigationBar() {

1Weather/UI/View controllers/Notifications/NotificationsViewController.swift

@@ -12,7 +12,7 @@ import OneWeatherAnalytics
 class NotificationsViewController: UIViewController {
     private let coordinator: NotificationsCoordinator
     private let viewModel = NotificationsViewModel()
-    private var localizationObserver: Any?
+    private var localizationObserver: LocalizationChangeObserver!
     private let log = Logger(componentName: "NotificationsViewController")
     
     private let tableView = UITableView()
@@ -40,13 +40,6 @@ class NotificationsViewController: UIViewController {
         analytics(log: .ANALYTICS_VIEW_ALERTS)
     }
     
-    
-    deinit {
-        if let observer = localizationObserver {
-            NotificationCenter.default.removeObserver(observer)
-        }
-    }
-    
     private func close() {
         self.navigationController?.dismiss(animated: true, completion: { [weak self] in
             guard let self = self else { return }
@@ -69,10 +62,10 @@ private extension NotificationsViewController {
                                           action: #selector(handleCloseButton))
         navigationItem.leftBarButtonItem = closeButton
         
-        localizationObserver = NotificationCenter.default.addObserver(forName: .localizationChange, object: nil, queue: .main, using: { [weak self] _ in
+        localizationObserver = LocalizationChangeObserver { [weak self] in
             self?.tableView.reloadData()
             self?.prepareNavigationBar()
-        })
+        }
     }
     
     func prepareNavigationBar() {