Merge branch 'stable/0.10.x' of https://github.com/AvaloniaUI/Avalonia into stable/0.10.x

Author: Takoooooo

src/Avalonia.Base/Threading/ThreadSafeObjectPool.cs

@@ -5,12 +5,11 @@ namespace Avalonia.Threading
     public class ThreadSafeObjectPool<T> where T : class, new()
     {
         private Stack<T> _stack = new Stack<T>();
-        private object _lock = new object();
         public static ThreadSafeObjectPool<T> Default { get; } = new ThreadSafeObjectPool<T>();
 
         public T Get()
         {
-            lock (_lock)
+            lock (_stack)
             {
                 if(_stack.Count == 0)
                     return new T();

src/Avalonia.Controls/ItemsControl.cs

@@ -519,7 +519,7 @@ protected static IInputElement GetNextControl(
                 }
 
                 c = result;
-            } while (c != null && c != from);
+            } while (c != null && c != from && direction != NavigationDirection.First && direction != NavigationDirection.Last);
 
             return null;
         }

src/Avalonia.Controls/Platform/DefaultMenuInteractionHandler.cs

@@ -412,7 +412,7 @@ protected internal virtual void PointerReleased(object sender, PointerReleasedEv
 
         protected internal virtual void MenuOpened(object sender, RoutedEventArgs e)
         {
-            if (e.Source == Menu)
+            if (e.Source is Menu)
             {
                 Menu?.MoveSelection(NavigationDirection.First, true);
             }

src/Skia/Avalonia.Skia/DrawingContextImpl.cs

@@ -126,6 +126,7 @@ public DrawingContextImpl(CreateInfo createInfo, params IDisposable[] disposable
         SKCanvas ISkiaDrawingContextImpl.SkCanvas => Canvas;
         SKSurface ISkiaDrawingContextImpl.SkSurface => Surface;
         GRContext ISkiaDrawingContextImpl.GrContext => _grContext;
+        double ISkiaDrawingContextImpl.CurrentOpacity => _currentOpacity;
 
         /// <inheritdoc />
         public void Clear(Color color)

src/Skia/Avalonia.Skia/ISkiaDrawingContextImpl.cs

@@ -8,5 +8,6 @@ public interface ISkiaDrawingContextImpl : IDrawingContextImpl
         SKCanvas SkCanvas { get; }
         GRContext GrContext { get; }
         SKSurface SkSurface { get; }
+        double CurrentOpacity { get; }
     }
 }

tests/Avalonia.Controls.UnitTests/Primitives/SelectingItemsControlTests.cs

@@ -4,6 +4,8 @@
 using System.Collections.Specialized;
 using System.ComponentModel;
 using System.Linq;
+using System.Reactive.Disposables;
+using System.Threading.Tasks;
 using Avalonia.Collections;
 using Avalonia.Controls.Presenters;
 using Avalonia.Controls.Primitives;
@@ -1610,6 +1612,50 @@ public void MoveSelection_Wrap_Does_Not_Hang_With_No_Focusable_Controls()
             target.MoveSelection(NavigationDirection.Next, true);
         }
 
+        [Fact(Timeout = 2000)]
+        public async Task MoveSelection_Does_Not_Hang_With_No_Focusable_Controls_And_Moving_Selection_To_The_First_Item()
+        {
+            var target = new TestSelector
+            {
+                Template = Template(),
+                Items = new[]
+                {
+                    new ListBoxItem { Focusable = false },
+                    new ListBoxItem(),
+                }
+            };
+
+            target.Measure(new Size(100, 100));
+            target.Arrange(new Rect(0, 0, 100, 100));
+
+            // Timeout in xUnit doesen't work with synchronous methods so we need to apply hack below.
+            // https://github.com/xunit/xunit/issues/2222
+            await Task.Run(() => target.MoveSelection(NavigationDirection.First, true));
+            Assert.Equal(-1, target.SelectedIndex);
+        }
+
+        [Fact(Timeout = 2000)]
+        public async Task MoveSelection_Does_Not_Hang_With_No_Focusable_Controls_And_Moving_Selection_To_The_Last_Item()
+        {
+            var target = new TestSelector
+            {
+                Template = Template(),
+                Items = new[]
+                {
+                    new ListBoxItem(),
+                    new ListBoxItem { Focusable = false },
+                }
+            };
+
+            target.Measure(new Size(100, 100));
+            target.Arrange(new Rect(0, 0, 100, 100));
+
+            // Timeout in xUnit doesen't work with synchronous methods so we need to apply hack below.
+            // https://github.com/xunit/xunit/issues/2222
+            await Task.Run(() => target.MoveSelection(NavigationDirection.Last, true));
+            Assert.Equal(-1, target.SelectedIndex);
+        }
+
         [Fact]
         public void MoveSelection_Does_Select_Disabled_Controls()
         {