Use Rx event subscription instead of MessageBus to send information

v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs

@@ -1,4 +1,5 @@
 using System.Reactive.Disposables;
+using System.Reactive.Linq;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
@@ -39,7 +40,6 @@ public partial class MainWindow : WindowBase<MainWindowViewModel>
         menuBackupAndRestore.Click += MenuBackupAndRestore_Click;
         menuClose.Click += MenuClose_Click;
 
-        MessageBus.Current.Listen<string>(EMsgCommand.SendSnackMsg.ToString()).Subscribe(DelegateSnackMsg);
         ViewModel = new MainWindowViewModel(UpdateViewHandler);
         Locator.CurrentMutable.RegisterLazySingleton(() => ViewModel, typeof(MainWindowViewModel));
 
@@ -136,6 +136,18 @@ public partial class MainWindow : WindowBase<MainWindowViewModel>
                     this.Bind(ViewModel, vm => vm.TabMainSelectedIndex, v => v.tabMain2.SelectedIndex).DisposeWith(disposables);
                     break;
             }
+
+            AppEvents.SendSnackMsgRequested
+              .AsObservable()
+              .ObserveOn(RxApp.MainThreadScheduler)
+              .Subscribe(async content => await DelegateSnackMsg(content))
+              .DisposeWith(disposables);
+
+            AppEvents.AppExitRequested
+              .AsObservable()
+              .ObserveOn(RxApp.MainThreadScheduler)
+              .Subscribe(_ => StorageUI())
+              .DisposeWith(disposables);
         });
 
         if (Utils.IsWindows())
@@ -156,7 +168,6 @@ public partial class MainWindow : WindowBase<MainWindowViewModel>
         menuAddServerViaScan.IsVisible = false;
 
         AddHelpMenuItem();
-        MessageBus.Current.Listen<string>(EMsgCommand.AppExit.ToString()).Subscribe(StorageUI);
     }
 
     #region Event
@@ -168,11 +179,9 @@ public partial class MainWindow : WindowBase<MainWindowViewModel>
             DispatcherPriority.Default);
     }
 
-    private void DelegateSnackMsg(string content)
+    private async Task DelegateSnackMsg(string content)
     {
-        Dispatcher.UIThread.Post(() =>
-                   _manager?.Show(new Notification(null, content, NotificationType.Information)),
-        DispatcherPriority.Normal);
+        _manager?.Show(new Notification(null, content, NotificationType.Information));
     }
 
     private async Task<bool> UpdateViewHandler(EViewAction action, object? obj)
@@ -462,7 +471,7 @@ public partial class MainWindow : WindowBase<MainWindowViewModel>
         }
     }
 
-    private void StorageUI(string? n = null)
+    private void StorageUI()
     {
         ConfigHandler.SaveWindowSizeItem(_config, GetType().Name, Width, Height);