- add: content migration loading bar

Nebula.Launcher/ViewModels/MainViewModel.cs

@@ -40,6 +40,7 @@ public partial class MainViewModel : ViewModelBase
     [GenerateProperty] private DebugService DebugService { get; } = default!;
     [GenerateProperty] private PopupMessageService PopupMessageService { get; } = default!;
     [GenerateProperty, DesignConstruct] private ViewHelperService ViewHelperService { get; } = default!;
+    [GenerateProperty] private FileService FileService { get; } = default!;
 
     public ObservableCollection<ListItemTemplate> Items { get; private set; }
 
@@ -56,6 +57,20 @@ public partial class MainViewModel : ViewModelBase
 
         PopupMessageService.OnPopupRequired += OnPopupRequired;
         PopupMessageService.OnCloseRequired += OnPopupCloseRequired;
+        
+        CheckMigration();
+    }
+
+    private void CheckMigration()
+    {
+        var loadingHandler = ViewHelperService.GetViewModel<LoadingContextViewModel>();
+        loadingHandler.LoadingName = "Migration task, please wait...";
+        loadingHandler.IsCancellable = false;
+
+        if (!FileService.CheckMigration(loadingHandler))
+            return;
+        
+        OnPopupRequired(loadingHandler);
     }
 
     partial void OnSelectedListItemChanged(ListItemTemplate? value)

Nebula.Launcher/ViewModels/Popup/LoadingContextViewModel.cs

@@ -17,6 +17,7 @@ public sealed partial class LoadingContextViewModel : PopupViewModelBase, ILoadi
     [ObservableProperty] private int _resolvedJobs;
 
     public string LoadingName { get; set; } = "Loading...";
+    public bool IsCancellable { get; set; } = true;
     public override bool IsClosable => false;
 
     public override string Title => LoadingName;
@@ -42,6 +43,7 @@ public sealed partial class LoadingContextViewModel : PopupViewModelBase, ILoadi
     }
 
     public void Cancel(){
+        if(!IsCancellable) return;
         CancellationService.Cancel();
         Dispose();
     }

Nebula.Launcher/Views/Popup/LoadingContextView.axaml

@@ -24,7 +24,11 @@
                 </Label>
             </StackPanel>
 
-            <Button HorizontalAlignment="Right" VerticalAlignment="Center" Command="{Binding Cancel}">
+            <Button 
+                HorizontalAlignment="Right" 
+                VerticalAlignment="Center" 
+                Command="{Binding Cancel}" 
+                IsVisible="{Binding IsCancellable}">
                 <Label>Cancel</Label>
             </Button>
         </Panel>