enhance: AutoFocusBehaviour will move cursor to the end of contents

Author: love-linger

src/Views/AutoFocusBehaviour.cs

@@ -1,22 +1,17 @@
 using Avalonia;
+using Avalonia.Controls;
 using Avalonia.Input;
 
 namespace SourceGit.Views
 {
     public class AutoFocusBehaviour : AvaloniaObject
     {
         public static readonly AttachedProperty<bool> IsEnabledProperty =
-            AvaloniaProperty.RegisterAttached<AutoFocusBehaviour, InputElement, bool>("IsEnabled", false, false);
+            AvaloniaProperty.RegisterAttached<AutoFocusBehaviour, TextBox, bool>("IsEnabled", false, false);
 
         static AutoFocusBehaviour()
         {
-            IsEnabledProperty.Changed.AddClassHandler<InputElement>((input, e) =>
-            {
-                if (input.GetValue(IsEnabledProperty))
-                {
-                    input.AttachedToVisualTree += (o, _) => (o as InputElement).Focus(NavigationMethod.Directional);
-                }
-            });
+            IsEnabledProperty.Changed.AddClassHandler<TextBox>(OnIsEnabledChanged);
         }
 
         public static bool GetIsEnabled(AvaloniaObject elem)
@@ -28,5 +23,18 @@ public static void SetIsEnabled(AvaloniaObject elem, bool value)
         {
             elem.SetValue(IsEnabledProperty, value);
         }
+
+        private static void OnIsEnabledChanged(TextBox elem, AvaloniaPropertyChangedEventArgs e)
+        {
+            if (GetIsEnabled(elem))
+            {
+                elem.AttachedToVisualTree += (o, _) =>
+                {
+                    var text = o as TextBox;
+                    text.Focus(NavigationMethod.Directional);
+                    text.CaretIndex = text.Text == null ? 0 : text.Text.Length;
+                };
+            }
+        }
     }
 }