Created new view model specifically for the "Desktop" application in …

…G Hub

GHelper/GHelper/ViewModel/ApplicationViewModel.cs

@@ -145,6 +145,26 @@ protected ApplicationViewModel(Application application)
 			this.Application = application;
 			SaveBackup();
 		}
+
+        private static ApplicationViewModel CreateApplicationViewModelForApplicationModel(Application application)
+        {
+            ApplicationViewModel applicationViewModel;
+
+            switch (application)
+            {
+                case DesktopApplication desktopApplication:
+                    applicationViewModel = new DesktopApplicationViewModel(desktopApplication);
+                    break;
+                case CustomApplication customApplication:
+                    applicationViewModel = new CustomApplicationViewModel(customApplication);
+                    break;
+                default:
+                    applicationViewModel = new ApplicationViewModel(application);
+                    break;
+            }
+
+            return applicationViewModel;
+        }
 
         public override void DiscardUserChanges(GHubRecordViewModel? origin = null)
         {
@@ -243,16 +263,8 @@ private void HandleProfileSetActiveForApplication(ProfileViewModel profileWithCh
                 }
 			}
 		}
-
-		public override void Delete()
-		{
-			if (this.Application is not DesktopApplication)
-			{
-				base.Delete();				
-			}
-		}
 
-		[NotifyPropertyChangedInvocator]
+        [NotifyPropertyChangedInvocator]
 		protected override void OnPropertyChanged([CallerMemberName] string? propertyName = null)
 		{
 			PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
@@ -272,24 +284,7 @@ public static IEnumerable<ApplicationViewModel> CreateFromCollection(IEnumerable
 			}
 			return applicationViewModels;
 		}
-
-		private static ApplicationViewModel CreateApplicationViewModelForApplicationModel(Application application)
-		{
-			ApplicationViewModel applicationViewModel;
-
-			switch (application)
-			{
-				case CustomApplication customApplication:
-					applicationViewModel = new CustomApplicationViewModel(customApplication);
-					break;
-				default:
-					applicationViewModel = new ApplicationViewModel(application);
-					break;
-			}
-
-			return applicationViewModel;
-		}
-	}
+    }
 
 	public enum InstallState 
 	{

GHelper/GHelper/ViewModel/DesktopApplicationViewModel.cs

@@ -0,0 +1,28 @@
+using GHelperLogic.Model;
+using SixLabors.ImageSharp;
+
+namespace GHelper.ViewModel
+{
+    public class DesktopApplicationViewModel : ApplicationViewModel
+    {
+        protected internal DesktopApplicationViewModel(DesktopApplication application) : base(application)
+        {
+        }
+
+        public override void Delete()
+        {
+            //Do nothing, we don't allow deleting the Desktop app
+        }
+
+        public override void SetNewCustomPosterImage(Image customPoster)
+        {
+            //Do nothing, we don't allow setting custom posters
+        }
+
+        protected override void RestorePosterIfNeeded()
+        {
+            //Do nothing, we don't allow setting custom posters anyway so there's no way our poster could
+            //have been changed in the first place
+        }
+    }
+}