Add option to freez popups (Alt + Ctrl + F)

src/Avalonia.Diagnostics/Diagnostics/ViewModels/MainViewModel.cs

@@ -21,6 +21,7 @@ namespace Avalonia.Diagnostics.ViewModels
         private bool _shouldVisualizeMarginPadding = true;
         private bool _shouldVisualizeDirtyRects;
         private bool _showFpsOverlay;
+        private bool _freezePopups;
 
 #nullable disable
         // Remove "nullable disable" after MemberNotNull will work on our CI.
@@ -40,6 +41,12 @@ namespace Avalonia.Diagnostics.ViewModels
             Console = new ConsoleViewModel(UpdateConsoleContext);
         }
 
+        public bool FreezePopups
+        {
+            get => _freezePopups;
+            set => RaiseAndSetIfChanged(ref _freezePopups, value);
+        }
+
         public bool ShouldVisualizeMarginPadding
         {
             get => _shouldVisualizeMarginPadding;

src/Avalonia.Diagnostics/Diagnostics/Views/MainWindow.xaml.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Reactive.Linq;
+using System.Reactive.Subjects;
 using Avalonia.Controls;
 using Avalonia.Controls.Diagnostics;
 using Avalonia.Controls.Primitives;
@@ -173,6 +174,22 @@ namespace Avalonia.Diagnostics.Views
 
                     break;
                 }
+
+                case RawInputModifiers.Control | RawInputModifiers.Alt when e.Key == Key.F:
+                {
+                    vm.FreezePopups = !vm.FreezePopups;
+
+                    foreach (var popupRoot in GetPopupRoots(Root))
+                    {
+                        if (popupRoot.Parent is Popup popup)
+                        {
+                            popup.IsLightDismissEnabled = !vm.FreezePopups;
+                        }
+                    }
+
+                    break;
+                }
+
                 case RawInputModifiers.Alt when e.Key == Key.S || e.Key == Key.D:
                 {
                     vm.EnableSnapshotStyles(e.Key == Key.S);