Modifying points works

ViewModels/MainWindowViewModel.cs

@@ -1,40 +1,45 @@
 using CommunityToolkit.Mvvm.ComponentModel;
-
-namespace GazpromApp.ViewModels;
 using GazpromApp.Messages;
 using CommunityToolkit.Mvvm.Input;
 using CommunityToolkit.Mvvm.Messaging;
 using System.Collections.ObjectModel;
-using System.Diagnostics;
 using System.Threading.Tasks;
+using GazpromApp.Models;
+
+namespace GazpromApp.ViewModels;
 
 public partial class MainWindowViewModel : ViewModelBase
 {
-    public ObservableCollection<PointViewModel> Points { get; } = new ObservableCollection<PointViewModel>();
+    public ObservableCollection<PointViewModel> Points { get; } = [];
 
     [RelayCommand]
     private async Task AddPoint()
     {
         var point = await WeakReferenceMessenger.Default.Send(new NewPointMessage());
+        
         if (point != null)
             Points.Add(point);
-        IsLineVisible = true;
+        
+        IsLineVisible = Points.Count > 0;
+    }
+
+    [RelayCommand]
+    private async Task EditPoint(PointViewModel point)
+    {
+        PointViewModel p = await WeakReferenceMessenger.Default.Send(new EditPointMessage(point)) ?? point;
+        Points[Points.IndexOf(point)] = p;
     }
 
     [RelayCommand]
     private void RemovePoint(PointViewModel point)
     {
         Points.Remove(point);
-        if (Points.Count == 0)
-            IsLineVisible = false;
+        
+        IsLineVisible = Points.Count > 0;
     }
-
-    [RelayCommand]
-    private void EditPoint(PointViewModel point)
-    {
-        Debug.WriteLine(point.Name);
-    }
-
+    
+    // Visual properties
+    
     [ObservableProperty]
     private bool _isLineVisible;
 }