Merge branch 'master' into angle-display

# Conflicts:
#	src/Avalonia.OpenGL/EglDisplay.cs

azure-pipelines.yml

@@ -56,13 +56,6 @@ jobs:
       xcodeVersion: '10' # Options: 8, 9, default, specifyPath
       args: '-derivedDataPath ./'
 
-  - task: CmdLine@2
-    displayName: 'Install CastXML'
-    inputs:
-      script: |
-        brew update
-        brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/8a004a91a7fcd3f6620d5b01b6541ff0a640ffba/Formula/castxml.rb
-
   - task: CmdLine@2
     displayName: 'Install Nuke'
     inputs:

src/Avalonia.Controls/ColumnDefinitions.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Specialized;
 using System.Linq;
+using System.Text;
 using Avalonia.Collections;
 
 namespace Avalonia.Controls
@@ -13,7 +14,7 @@ namespace Avalonia.Controls
         /// <summary>
         /// Initializes a new instance of the <see cref="ColumnDefinitions"/> class.
         /// </summary>
-        public ColumnDefinitions() : base ()
+        public ColumnDefinitions()
         {
         }
 
@@ -27,6 +28,11 @@ namespace Avalonia.Controls
             AddRange(GridLength.ParseLengths(s).Select(x => new ColumnDefinition(x)));
         }
 
+        public override string ToString()
+        {
+            return string.Join(",", this.Select(x => x.Width));
+        }
+
         /// <summary>
         /// Parses a string representation of column definitions collection.
         /// </summary>
@@ -34,4 +40,4 @@ namespace Avalonia.Controls
         /// <returns>The <see cref="ColumnDefinitions"/>.</returns>
         public static ColumnDefinitions Parse(string s) => new ColumnDefinitions(s);
     }
-}
+}

src/Avalonia.Controls/Repeater/ItemsRepeater.cs

@@ -7,10 +7,10 @@ using System;
 using System.Collections;
 using System.Collections.Specialized;
 using Avalonia.Controls.Templates;
-using Avalonia.Data;
 using Avalonia.Input;
 using Avalonia.Layout;
 using Avalonia.Logging;
+using Avalonia.Utilities;
 using Avalonia.VisualTree;
 
 namespace Avalonia.Controls
@@ -681,8 +681,15 @@ namespace Avalonia.Controls
             if (oldValue != null)
             {
                 oldValue.UninitializeForContext(LayoutContext);
-                oldValue.MeasureInvalidated -= InvalidateMeasureForLayout;
-                oldValue.ArrangeInvalidated -= InvalidateArrangeForLayout;
+
+                WeakEventHandlerManager.Unsubscribe<EventArgs, ItemsRepeater>(
+                    oldValue,
+                    nameof(AttachedLayout.MeasureInvalidated),
+                    InvalidateMeasureForLayout);
+                WeakEventHandlerManager.Unsubscribe<EventArgs, ItemsRepeater>(
+                    oldValue,
+                    nameof(AttachedLayout.ArrangeInvalidated),
+                    InvalidateArrangeForLayout);
 
                 // Walk through all the elements and make sure they are cleared
                 foreach (var element in Children)
@@ -699,8 +706,15 @@ namespace Avalonia.Controls
             if (newValue != null)
             {
                 newValue.InitializeForContext(LayoutContext);
-                newValue.MeasureInvalidated += InvalidateMeasureForLayout;
-                newValue.ArrangeInvalidated += InvalidateArrangeForLayout;
+
+                WeakEventHandlerManager.Subscribe<AttachedLayout, EventArgs, ItemsRepeater>(
+                    newValue,
+                    nameof(AttachedLayout.MeasureInvalidated),
+                    InvalidateMeasureForLayout);
+                WeakEventHandlerManager.Subscribe<AttachedLayout, EventArgs, ItemsRepeater>(
+                    newValue,
+                    nameof(AttachedLayout.ArrangeInvalidated),
+                    InvalidateArrangeForLayout);
             }
 
             bool isVirtualizingLayout = newValue != null && newValue is VirtualizingLayout;

src/Avalonia.Diagnostics/Diagnostics/ViewModels/PropertyViewModel.cs

@@ -8,8 +8,8 @@ namespace Avalonia.Diagnostics.ViewModels
     internal abstract class PropertyViewModel : ViewModelBase
     {
         private const BindingFlags PublicStatic = BindingFlags.Public | BindingFlags.Static;
-        private static readonly Type[] StringParameter = new[] { typeof(string) };
-        private static readonly Type[] StringIFormatProviderParameters = new[] { typeof(string), typeof(IFormatProvider) };
+        private static readonly Type[] StringParameter = { typeof(string) };
+        private static readonly Type[] StringIFormatProviderParameters = { typeof(string), typeof(IFormatProvider) };
 
         public abstract object Key { get; }
         public abstract string Name { get; }
@@ -26,35 +26,46 @@ namespace Avalonia.Diagnostics.ViewModels
             }
 
             var converter = TypeDescriptor.GetConverter(value);
-            return converter?.ConvertToString(value) ?? value.ToString();
+
+            //CollectionConverter does not deliver any important information. It just displays "(Collection)".
+            if (!converter.CanConvertTo(typeof(string)) || 
+                converter.GetType() == typeof(CollectionConverter))
+            {
+                return value.ToString();
+            }
+
+            return converter.ConvertToString(value);
         }
 
-        protected static object ConvertFromString(string s, Type targetType)
+        private static object InvokeParse(string s, Type targetType)
         {
-            var converter = TypeDescriptor.GetConverter(targetType);
-            
-            if (converter != null && converter.CanConvertFrom(typeof(string)))
+            var method = targetType.GetMethod("Parse", PublicStatic, null, StringIFormatProviderParameters, null);
+
+            if (method != null)
             {
-                return converter.ConvertFrom(null, CultureInfo.InvariantCulture, s);
+                return method.Invoke(null, new object[] { s, CultureInfo.InvariantCulture });
             }
-            else
+
+            method = targetType.GetMethod("Parse", PublicStatic, null, StringParameter, null);
+
+            if (method != null)
             {
-                var method = targetType.GetMethod("Parse", PublicStatic, null, StringIFormatProviderParameters, null);
+                return method.Invoke(null, new object[] { s });
+            }
 
-                if (method != null)
-                {
-                    return method.Invoke(null, new object[] { s, CultureInfo.InvariantCulture });
-                }
+            throw new InvalidCastException("Unable to convert value.");
+        }
 
-                method = targetType.GetMethod("Parse", PublicStatic, null, StringParameter, null);
+        protected static object ConvertFromString(string s, Type targetType)
+        {
+            var converter = TypeDescriptor.GetConverter(targetType);
 
-                if (method != null)
-                {
-                    return method.Invoke(null, new object[] { s });
-                }
+            if (converter.CanConvertFrom(typeof(string)))
+            {
+                return converter.ConvertFrom(null, CultureInfo.InvariantCulture, s);
             }
 
-            throw new InvalidCastException("Unable to convert value.");
+            return InvokeParse(s, targetType);
         }
     }
 }

src/Avalonia.Layout/Layoutable.cs

@@ -758,8 +758,6 @@ namespace Avalonia.Layout
 
         protected override void OnDetachedFromVisualTreeCore(VisualTreeAttachmentEventArgs e)
         {
-            base.OnDetachedFromVisualTreeCore(e);
-
             if (e.Root is ILayoutRoot r)
             {
                 if (_layoutUpdated is object)
@@ -772,6 +770,8 @@ namespace Avalonia.Layout
                     r.LayoutManager.UnregisterEffectiveViewportListener(this);
                 }
             }
+
+            base.OnDetachedFromVisualTreeCore(e);
         }
 
         /// <summary>

src/Avalonia.OpenGL/Angle/AngleWin32EglDisplay.cs

@@ -25,7 +25,7 @@ namespace Avalonia.OpenGL.Angle
                     throw new OpenGlException("eglGetPlatformDisplayEXT is not supported by libegl.dll");
 
                 var allowedApis = AvaloniaLocator.Current.GetService<AngleOptions>()?.AllowedPlatformApis
-                                  ?? new List<AngleOptions.PlatformApi> {AngleOptions.PlatformApi.DirectX9};
+                                  ?? new [] { AngleOptions.PlatformApi.DirectX11, AngleOptions.PlatformApi.DirectX9 };
 
                 foreach (var platformApi in allowedApis)
                 {

src/Avalonia.OpenGL/AngleOptions.cs

@@ -10,9 +10,6 @@ namespace Avalonia.OpenGL
 			DirectX11
         }
 
-        public List<PlatformApi> AllowedPlatformApis = new List<PlatformApi>
-        {
-            PlatformApi.DirectX9
-        };
+        public IList<PlatformApi> AllowedPlatformApis { get; set; } = null;
     }
 }

src/Avalonia.OpenGL/EglConsts.cs

@@ -186,6 +186,9 @@ namespace Avalonia.OpenGL
         public const int EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE = 0x3206;
         public const int EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE = 0x320A;
         public const int EGL_PLATFORM_ANGLE_DEVICE_TYPE_NULL_ANGLE = 0x345E;
+
+        public const int EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE = 0x320D;
+        public const int EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE = 0x320E;
         
         //EGL_ANGLE_platform_angle_d3d
         public const int EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE = 0x3209;

src/Skia/Avalonia.Skia/SkiaOptions.cs

@@ -16,6 +16,10 @@ namespace Avalonia
         /// <summary>
         /// The maximum number of bytes for video memory to store textures and resources.
         /// </summary>
-        public long? MaxGpuResourceSizeBytes { get; set; }
+        /// <remarks>
+        /// This is set by default to the recommended value for Avalonia.
+        /// Setting this to null will give you the default Skia value.
+        /// </remarks>
+        public long? MaxGpuResourceSizeBytes { get; set; } = 1024 * 600 * 4 * 12; // ~28mb 12x 1024 x 600 textures. 
     }
 }

src/Windows/Avalonia.Win32/WindowImpl.cs

@@ -1007,10 +1007,12 @@ namespace Avalonia.Win32
                 if (newProperties.IsResizable)
                 {
                     style |= WindowStyles.WS_SIZEFRAME;
+                    style |= WindowStyles.WS_MAXIMIZEBOX;
                 }
                 else
                 {
                     style &= ~WindowStyles.WS_SIZEFRAME;
+                    style &= ~WindowStyles.WS_MAXIMIZEBOX;
                 }
 
                 SetStyle(style);

tests/Avalonia.LeakTests/ControlTests.cs

@@ -552,6 +552,37 @@ namespace Avalonia.LeakTests
             }
         }
 
+        [Fact]
+        public void ItemsRepeater_Is_Freed()
+        {
+            using (Start())
+            {
+                Func<Window> run = () =>
+                {
+                    var window = new Window
+                    {
+                        Content = new ItemsRepeater(),
+                    };
+
+                    window.Show();
+
+                    window.LayoutManager.ExecuteInitialLayoutPass();
+                    Assert.IsType<ItemsRepeater>(window.Presenter.Child);
+
+                    window.Content = null;
+                    window.LayoutManager.ExecuteLayoutPass();
+                    Assert.Null(window.Presenter.Child);
+
+                    return window;
+                };
+
+                var result = run();
+
+                dotMemory.Check(memory =>
+                    Assert.Equal(0, memory.GetObjects(where => where.Type.Is<ItemsRepeater>()).ObjectsCount));
+            }
+        }
+
         private IDisposable Start()
         {
             return UnitTestApplication.Start(TestServices.StyledWindow.With(