Reacting calendar changes

Wino.Calendar.ViewModels/CalendarAppShellViewModel.cs

@@ -86,9 +86,11 @@ public partial class CalendarAppShellViewModel : CalendarBaseViewModel,
         StatePersistenceService.StatePropertyChanged += PrefefencesChanged;
     }
 
-    private void SelectedCalendarItemsChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
+    protected override void OnDispatcherAssigned()
     {
-        throw new NotImplementedException();
+        base.OnDispatcherAssigned();
+
+        AccountCalendarStateService.Dispatcher = Dispatcher;
     }
 
     private void PrefefencesChanged(object sender, string e)

Wino.Calendar.ViewModels/Interfaces/IAccountCalendarStateService.cs

@@ -5,11 +5,13 @@ using System.ComponentModel;
 using CommunityToolkit.Mvvm.Collections;
 using Wino.Calendar.ViewModels.Data;
 using Wino.Core.Domain.Entities.Shared;
+using Wino.Core.Domain.Interfaces;
 
 namespace Wino.Calendar.ViewModels.Interfaces;
 
 public interface IAccountCalendarStateService : INotifyPropertyChanged
 {
+    IDispatcher Dispatcher { get; set; }
     ReadOnlyObservableCollection<GroupedAccountCalendarViewModel> GroupedAccountCalendars { get; }
 
     event EventHandler<GroupedAccountCalendarViewModel> CollectiveAccountGroupSelectionStateChanged;