Event details page improvements, calendar item update source.

Wino.Core.ViewModels/CalendarBaseViewModel.cs

@@ -1,5 +1,7 @@
-using CommunityToolkit.Mvvm.Messaging;
+using System;
+using CommunityToolkit.Mvvm.Messaging;
 using Wino.Core.Domain.Entities.Calendar;
+using Wino.Core.Domain.Enums;
 using Wino.Messaging.Client.Calendar;
 
 namespace Wino.Core.ViewModels;
@@ -9,14 +11,19 @@ public class CalendarBaseViewModel : CoreBaseViewModel,
     IRecipient<CalendarItemUpdated>,
     IRecipient<CalendarItemDeleted>
 {
-    public void Receive(CalendarItemAdded message) => OnCalendarItemAdded(message.CalendarItem);
-    public void Receive(CalendarItemUpdated message) => OnCalendarItemUpdated(message.CalendarItem);
-    public void Receive(CalendarItemDeleted message) => OnCalendarItemDeleted(message.CalendarItem);
+    public void Receive(CalendarItemAdded message) => DispatchToUIThread(() => OnCalendarItemAdded(message.CalendarItem));
+    public void Receive(CalendarItemUpdated message) => DispatchToUIThread(() => OnCalendarItemUpdated(message.CalendarItem, message.Source));
+    public void Receive(CalendarItemDeleted message) => DispatchToUIThread(() => OnCalendarItemDeleted(message.CalendarItem));
 
     protected virtual void OnCalendarItemAdded(CalendarItem calendarItem) { }
-    protected virtual void OnCalendarItemUpdated(CalendarItem calendarItem) { }
+    protected virtual void OnCalendarItemUpdated(CalendarItem calendarItem, CalendarItemUpdateSource source) { }
     protected virtual void OnCalendarItemDeleted(CalendarItem calendarItem) { }
 
+    private void DispatchToUIThread(Action action)
+    {
+        _ = ExecuteUIThread(action);
+    }
+
     protected override void RegisterRecipients()
     {
         base.RegisterRecipients();
@@ -35,3 +42,4 @@ public class CalendarBaseViewModel : CoreBaseViewModel,
         Messenger.Unregister<CalendarItemDeleted>(this);
     }
 }
+

Wino.Core.ViewModels/CoreBaseViewModel.cs

@@ -40,7 +40,18 @@ public class CoreBaseViewModel : ObservableRecipient, INavigationAware
 
     public virtual void OnPageLoaded() { }
 
-    public async Task ExecuteUIThread(Action action) => await Dispatcher?.ExecuteOnUIThread(action);
+    public Task ExecuteUIThread(Action action)
+    {
+        if (action == null) return Task.CompletedTask;
+
+        if (Dispatcher == null)
+        {
+            action();
+            return Task.CompletedTask;
+        }
+
+        return Dispatcher.ExecuteOnUIThread(action);
+    }
     public void ReportUIChange<TMessage>(TMessage message) where TMessage : class, IUIMessage => Messenger.Send(message);
 
     protected virtual void OnDispatcherAssigned() { }