lightweight variant (#1)

Reviewed-on: #1
Co-authored-by: Aleksandr Neychev <alexnejchev73@gmail.com>

CursorLang.Core/Models/LayoutChangedEventArgs.cs

@@ -0,0 +1,23 @@
+namespace CursorLang.Core.Models;
+
+/// <summary>
+/// Why the current layout has changed.
+/// </summary>
+public enum LayoutChangeReason
+{
+    /// <summary>The user switched the layout in the active application.</summary>
+    UserSwitched,
+
+    /// <summary>The user moved to another application that has a layout of its own.</summary>
+    ApplicationSwitched,
+}
+
+/// <summary>
+/// The data of a layout change event.
+/// </summary>
+public sealed class LayoutChangedEventArgs(KeyboardLayout layout, LayoutChangeReason reason) : EventArgs
+{
+    public KeyboardLayout Layout { get; } = layout;
+
+    public LayoutChangeReason Reason { get; } = reason;
+}