Clean up

imagecatalog/DataModel.cs

@@ -100,6 +100,20 @@ namespace ImageCatalog_2
                 NotifyPropertyChanged();
             }
         }
+        
+        public bool UiDisabled => !_uiEnabled;
+
+        private string _speedCounter = "-";
+
+        public string SpeedCounter
+        {
+            get => _speedCounter;
+            set
+            {
+                _speedCounter = value;
+                NotifyPropertyChanged();
+            }
+        }
 
         private void Test(object parameter)
         {