initial load

YouTubeViewers.WPF/Stores/SelectedYouTubeViewerStore.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using YouTubeViewers.Domain.Models;
+
+namespace YouTubeViewers.WPF.Stores
+{
+    public class SelectedYouTubeViewerStore
+    {
+        private readonly YouTubeViewersStore _youTubeViewersStore;
+
+        public SelectedYouTubeViewerStore(YouTubeViewersStore youTubeViewersStore)
+        {
+            _youTubeViewersStore = youTubeViewersStore;
+            _youTubeViewersStore.YouTubeViewerUpdated += YouTubeViewersStore_YouTubeViewerUpdated;
+        }
+
+        private void YouTubeViewersStore_YouTubeViewerUpdated(YouTubeViewer youTubeViewer)
+        {
+            if (youTubeViewer.Id == SelectedYouTubeViewer?.Id)
+            {
+                SelectedYouTubeViewer = youTubeViewer;
+            }
+        }
+
+        private YouTubeViewer _selectedYouTubeViewer;
+
+        public YouTubeViewer SelectedYouTubeViewer
+        {
+            get { return _selectedYouTubeViewer; }
+            set
+            {
+                _selectedYouTubeViewer = value;
+                SelectedYouTubeViewerChanged?.Invoke();
+            }
+        }
+
+        public event Action SelectedYouTubeViewerChanged;
+
+    }
+}