accesskey always on for non windows

src/Consolonia.Core/Dummy/DummyConsole.cs

@@ -24,7 +24,7 @@
             Size = new PixelBufferSize(width, height);
         }
 
         public PixelBufferSize Size { get; set; }
 
         public bool CaretVisible
         {
@@ -33,6 +33,7 @@
         }
 
         public bool SupportsComplexEmoji => true;
+        public bool SupportsAltSolo => false;
 
         public void ClearOutput()
         {

src/Consolonia.Core/Helpers/Extensions.cs

@@ -16,11 +16,11 @@ namespace Consolonia.Core.Helpers
 {
     public static class Extensions
     {
-        public static void SubscribeAction<TValue>(
+        public static IDisposable SubscribeAction<TValue>(
             this IObservable<AvaloniaPropertyChangedEventArgs<TValue>> observable,
             Action<AvaloniaPropertyChangedEventArgs<TValue>> action)
         {
-            observable.Subscribe(new AnonymousObserver<AvaloniaPropertyChangedEventArgs<TValue>>(action));
+            return observable.Subscribe(new AnonymousObserver<AvaloniaPropertyChangedEventArgs<TValue>>(action));
         }
 
         public static void AddConsoloniaDesignMode(this Application application)

src/Consolonia.Core/Infrastructure/ConsoleWindow.cs

@@ -7,6 +7,7 @@
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.Platform;
+using Avalonia.Controls.Primitives;
 using Avalonia.Input;
 using Avalonia.Input.Platform;
 using Avalonia.Input.Raw;
@@ -15,12 +16,15 @@
 using Avalonia.Rendering.Composition;
 using Avalonia.Threading;
 using Consolonia.Core.Drawing.PixelBufferImplementation;
+using Consolonia.Core.Helpers;
 using Consolonia.Core.Text;
 
 namespace Consolonia.Core.Infrastructure
 {
     public class ConsoleWindow : IWindowImpl
     {
+        private readonly bool _accessKeysAlwaysOn;
+        private readonly IDisposable _accessKeysAlwaysOnDisposable;
         private readonly IKeyboardDevice _myKeyboardDevice;
         private readonly TimeSpan _resizeDelay = TimeSpan.FromMilliseconds(100);
         [NotNull] internal readonly IConsole Console;
@@ -39,6 +43,10 @@ public ConsoleWindow()
             Console.FocusEvent += ConsoleOnFocusEvent;
             Handle = null!;
             PixelBuffer = new PixelBuffer(Console.Size);
+            _accessKeysAlwaysOn = !Console.SupportsAltSolo;
+            if (_accessKeysAlwaysOn)
+                _accessKeysAlwaysOnDisposable =
+                    AccessText.ShowAccessKeyProperty.Changed.SubscribeAction(OnShowAccessKeyPropertyChanged);
         }
 
         public PixelBuffer PixelBuffer { get; set; }
@@ -49,6 +57,8 @@ public ConsoleWindow()
         public void SetInputRoot(IInputRoot inputRoot)
         {
             _inputRoot = inputRoot;
+            if (_accessKeysAlwaysOn)
+                _inputRoot.ShowAccessKeys = true;
         }
 
         public Point PointToClient(PixelPoint point)
@@ -296,6 +306,14 @@ public void Dispose()
             GC.SuppressFinalize(this);
         }
 
+        private void OnShowAccessKeyPropertyChanged(AvaloniaPropertyChangedEventArgs<bool> args)
+        {
+            if (args.Sender != _inputRoot) return;
+            if (args.GetNewValue<bool>()) return;
+
+            _inputRoot.ShowAccessKeys = true;
+        }
+
         private void ConsoleOnMouseEvent(RawPointerEventType type, Point point, Vector? wheelDelta,
             RawInputModifiers modifiers)
         {
@@ -427,6 +445,7 @@ protected virtual void Dispose(bool disposing)
                 {
                     // TODO: dispose managed state (managed objects)
                     Closed?.Invoke();
+                    _accessKeysAlwaysOnDisposable?.Dispose();
                     Console.Resized -= OnConsoleOnResized;
                     Console.KeyEvent -= ConsoleOnKeyEvent;
                     Console.MouseEvent -= ConsoleOnMouseEvent;

src/Consolonia.Core/Infrastructure/DefaultNetConsole.cs

@@ -47,6 +47,8 @@ public DefaultNetConsole()
             StartInputReading();
         }
 
+        public override bool SupportsAltSolo => false;
+
         protected override void Dispose(bool disposing)
         {
             base.Dispose(disposing);

src/Consolonia.Core/Infrastructure/IConsole.cs

@@ -21,6 +21,8 @@ public interface IConsole : IDisposable
         /// </summary>
         bool SupportsComplexEmoji { get; }
 
+        bool SupportsAltSolo { get; }
+
         void SetTitle(string title);
 
         void SetCaretPosition(PixelBufferCoordinate bufferPoint);

src/Consolonia.Core/Infrastructure/InputLessDefaultNetConsole.cs

@@ -11,7 +11,7 @@
 
 namespace Consolonia.Core.Infrastructure
 {
-    public class InputLessDefaultNetConsole : IConsole
+    public abstract class InputLessDefaultNetConsole : IConsole
     {
         private const string TestEmoji = "👨‍👩‍👧‍👦";
         private bool _caretVisible;
@@ -48,6 +48,7 @@ public bool CaretVisible
         public PixelBufferSize Size { get; private set; }
 
         public bool SupportsComplexEmoji => _supportEmoji ?? false;
+        public abstract bool SupportsAltSolo { get; }
 
         public void SetTitle(string title)
         {

src/Consolonia.NUnit/UnitTestConsole.cs

@@ -39,6 +39,7 @@ public void Dispose()
         bool IConsole.CaretVisible { get; set; }
 
         public bool SupportsComplexEmoji => true;
+        public bool SupportsAltSolo => true;
 
         public void SetTitle(string title)
         {

src/Consolonia.PlatformSupport/CursesConsole.cs

@@ -115,6 +115,8 @@ public CursesConsole()
             StartEventLoop();
         }
 
+        public override bool SupportsAltSolo => false;
+
         private void StartEventLoop()
         {
             //todo: cleanup

src/Consolonia.PlatformSupport/WindowsConsole.cs

@@ -61,6 +61,8 @@ public Win32Console()
             StartEventLoop();
         }
 
+        public override bool SupportsAltSolo => true;
+
         public override void PauseIO(Task task)
         {
             base.PauseIO(task);