From ac9a8d74b87b451529c18a4f9832b97efcee018a Mon Sep 17 00:00:00 2001
From: brandonhood <bhood@mail.usf.edu>
Date: Sat, 14 Oct 2017 18:23:36 -0400
Subject: [PATCH 01/12] Update Control.cs

Updated the setter for Name to use IsNullOrWhiteSpace to both protect against null and do the emptiness check
---
 src/Avalonia.Controls/Control.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Avalonia.Controls/Control.cs b/src/Avalonia.Controls/Control.cs
index 14beb2eab7..89c4f9279a 100644
--- a/src/Avalonia.Controls/Control.cs
+++ b/src/Avalonia.Controls/Control.cs
@@ -175,9 +175,9 @@ namespace Avalonia.Controls
 
             set
             {
-                if (value.Trim() == string.Empty)
+                if (String.IsNullOrWhiteSpace(value))
                 {
-                    throw new InvalidOperationException("Cannot set Name to empty string.");
+                    throw new InvalidOperationException("Cannot set Name to null or empty string.");
                 }
 
                 if (_styled)

From 4ecbea9d5e12324663799fa9eb3bbd60a54cbcd6 Mon Sep 17 00:00:00 2001
From: Jeremy Koritzinsky <jkoritzinsky@gmail.com>
Date: Sun, 15 Oct 2017 14:54:23 -0500
Subject: [PATCH 02/12] Remove unneeded markup extensions.

---
 Avalonia.sln                                  |  3 ++-
 .../Avalonia.Markup.Xaml.csproj               |  2 --
 .../MarkupExtensions/StaticExtension.cs       | 25 -------------------
 .../MarkupExtensions/TypeExtension.cs         | 23 -----------------
 4 files changed, 2 insertions(+), 51 deletions(-)
 delete mode 100644 src/Markup/Avalonia.Markup.Xaml/MarkupExtensions/StaticExtension.cs
 delete mode 100644 src/Markup/Avalonia.Markup.Xaml/MarkupExtensions/TypeExtension.cs

diff --git a/Avalonia.sln b/Avalonia.sln
index 7f516667ee..c6509817ce 100644
--- a/Avalonia.sln
+++ b/Avalonia.sln
@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26730.3
+VisualStudioVersion = 15.0.26730.10
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Avalonia.Base", "src\Avalonia.Base\Avalonia.Base.csproj", "{B09B78D8-9B26-48B0-9149-D64A2F120F3F}"
 EndProject
@@ -204,6 +204,7 @@ Global
 		tests\Avalonia.RenderTests\Avalonia.RenderTests.projitems*{48840edd-24bf-495d-911e-2eb12ae75d3b}*SharedItemsImports = 13
 		src\Shared\PlatformSupport\PlatformSupport.projitems*{4a1abb09-9047-4bd5-a4ad-a055e52c5ee0}*SharedItemsImports = 4
 		src\Shared\PlatformSupport\PlatformSupport.projitems*{7863ea94-f0fb-4386-bf8c-e5bfa761560a}*SharedItemsImports = 4
+		src\Shared\PlatformSupport\PlatformSupport.projitems*{7b92af71-6287-4693-9dcb-bd5b6e927e23}*SharedItemsImports = 4
 		src\Shared\RenderHelpers\RenderHelpers.projitems*{7d2d3083-71dd-4cc9-8907-39a0d86fb322}*SharedItemsImports = 4
 		src\Windows\Avalonia.Win32\Avalonia.Win32.Shared.projitems*{811a76cf-1cf6-440f-963b-bbe31bd72a82}*SharedItemsImports = 4
 		src\Windows\Avalonia.Win32\Avalonia.Win32.Shared.projitems*{9defc6b7-845b-4d8f-afc0-d32bf0032b8c}*SharedItemsImports = 13
diff --git a/src/Markup/Avalonia.Markup.Xaml/Avalonia.Markup.Xaml.csproj b/src/Markup/Avalonia.Markup.Xaml/Avalonia.Markup.Xaml.csproj
index de015fc947..e07c22d750 100644
--- a/src/Markup/Avalonia.Markup.Xaml/Avalonia.Markup.Xaml.csproj
+++ b/src/Markup/Avalonia.Markup.Xaml/Avalonia.Markup.Xaml.csproj
@@ -77,9 +77,7 @@
         <Compile Include="MarkupExtensions\StyleResourceExtension.cs" />
         <Compile Include="MarkupExtensions\BindingExtension.cs" />
         <Compile Include="MarkupExtensions\RelativeSourceExtension.cs" />
-        <Compile Include="MarkupExtensions\StaticExtension.cs" />
         <Compile Include="MarkupExtensions\TemplateBindingExtension.cs" />
-        <Compile Include="MarkupExtensions\TypeExtension.cs" />
         <Compile Include="Parsers\SelectorGrammar.cs" />
         <Compile Include="Parsers\SelectorParser.cs" />
         <Compile Include="PortableXaml\AvaloniaTypeAttributeProvider.cs" />
diff --git a/src/Markup/Avalonia.Markup.Xaml/MarkupExtensions/StaticExtension.cs b/src/Markup/Avalonia.Markup.Xaml/MarkupExtensions/StaticExtension.cs
deleted file mode 100644
index c084e362c2..0000000000
--- a/src/Markup/Avalonia.Markup.Xaml/MarkupExtensions/StaticExtension.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright (c) The Avalonia Project. All rights reserved.
-// Licensed under the MIT license. See licence.md file in the project root for full license information.
-
-using System;
-
-namespace Avalonia.Markup.Xaml.MarkupExtensions
-{
-    public class StaticExtension : Portable.Xaml.Markup.StaticExtension
-    {
-        public StaticExtension()
-        {
-        }
-
-        public StaticExtension(string member)
-            : base(member)
-        {
-        }
-
-        public override object ProvideValue(IServiceProvider serviceProvider)
-        {
-            return base.ProvideValue(serviceProvider);
-        }
-    }
-    
-}
\ No newline at end of file
diff --git a/src/Markup/Avalonia.Markup.Xaml/MarkupExtensions/TypeExtension.cs b/src/Markup/Avalonia.Markup.Xaml/MarkupExtensions/TypeExtension.cs
deleted file mode 100644
index 062096e746..0000000000
--- a/src/Markup/Avalonia.Markup.Xaml/MarkupExtensions/TypeExtension.cs
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright (c) The Avalonia Project. All rights reserved.
-// Licensed under the MIT license. See licence.md file in the project root for full license information.
-
-using System;
-
-namespace Avalonia.Markup.Xaml.MarkupExtensions
-{
-    public class TypeExtension : Portable.Xaml.Markup.TypeExtension
-    {
-        public TypeExtension()
-        {
-        }
-
-        public TypeExtension(string typeName) : base(typeName)
-        {
-        }
-
-        public override object ProvideValue(IServiceProvider serviceProvider)
-        {
-            return base.ProvideValue(serviceProvider);
-        }
-    }
-}
\ No newline at end of file

From b0a1f3f3dff53d82efa4c3b763a69fed7aa04989 Mon Sep 17 00:00:00 2001
From: Jeremy Koritzinsky <jkoritzinsky@gmail.com>
Date: Sun, 15 Oct 2017 15:42:19 -0500
Subject: [PATCH 03/12] Update tests to use `x:Static`.

---
 tests/Avalonia.Markup.Xaml.UnitTests/Xaml/BasicTests.cs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tests/Avalonia.Markup.Xaml.UnitTests/Xaml/BasicTests.cs b/tests/Avalonia.Markup.Xaml.UnitTests/Xaml/BasicTests.cs
index ce370790c3..8c7dad1bce 100644
--- a/tests/Avalonia.Markup.Xaml.UnitTests/Xaml/BasicTests.cs
+++ b/tests/Avalonia.Markup.Xaml.UnitTests/Xaml/BasicTests.cs
@@ -609,8 +609,8 @@ namespace Avalonia.Markup.Xaml.UnitTests.Xaml
         public void Multi_Xaml_Binding_Is_Parsed()
         {
             var xaml =
-@"<MultiBinding xmlns='https://github.com/avaloniaui'
-        Converter='{Static BoolConverters.And}'>
+@"<MultiBinding xmlns='https://github.com/avaloniaui' xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
+    Converter ='{x:Static BoolConverters.And}'>
      <Binding Path='Foo' />
      <Binding Path='Bar' />
 </MultiBinding>";
@@ -818,10 +818,11 @@ do we need it?")]
         {
             var xaml =
 @"<ContentControl xmlns='https://github.com/avaloniaui'
+            xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
             xmlns:local='clr-namespace:Avalonia.Markup.Xaml.UnitTests.Xaml;assembly=Avalonia.Markup.Xaml.UnitTests'>
     <ContentControl.ContentTemplate>
         <DataTemplate>
-            <TextBlock  Tag='{Static local:NonControl.StringProperty}'/>
+            <TextBlock  Tag='{x:Static local:NonControl.StringProperty}'/>
         </DataTemplate>
     </ContentControl.ContentTemplate>
 </ContentControl>";

From 745517f68e601c2941b88fe10a249c9cbd5dd1e9 Mon Sep 17 00:00:00 2001
From: Jeremy Koritzinsky <jkoritzinsky@gmail.com>
Date: Sun, 15 Oct 2017 15:47:48 -0500
Subject: [PATCH 04/12] Updated usage of Static and Type to be x:Static and
 x:Type.

---
 samples/ControlCatalog/SideBar.xaml                      | 6 +++---
 samples/RenderTest/SideBar.xaml                          | 6 +++---
 src/Avalonia.Themes.Default/TabControl.xaml              | 6 +++---
 src/Avalonia.Themes.Default/TextBox.xaml                 | 8 ++++----
 .../Xaml/DataTemplateTests.cs                            | 9 +++++----
 5 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/samples/ControlCatalog/SideBar.xaml b/samples/ControlCatalog/SideBar.xaml
index c03bc432d4..7fcd828ba3 100644
--- a/samples/ControlCatalog/SideBar.xaml
+++ b/samples/ControlCatalog/SideBar.xaml
@@ -1,11 +1,11 @@
-<Styles xmlns="https://github.com/avaloniaui">
+<Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
   <Style Selector="TabControl.sidebar">
     <Setter Property="Template">
       <ControlTemplate>
         <DockPanel>
           <ScrollViewer MinWidth="190" Background="{DynamicResource ThemeAccentBrush}" DockPanel.Dock="Left">
             <TabStrip Name="PART_TabStrip"
-                      MemberSelector="{Static TabControl.HeaderSelector}"
+                      MemberSelector="{x:Static TabControl.HeaderSelector}"
                       Items="{TemplateBinding Items}"
                       SelectedIndex="{TemplateBinding Path=SelectedIndex, Mode=TwoWay}">
               <TabStrip.ItemsPanel>
@@ -17,7 +17,7 @@
           </ScrollViewer>
           <Carousel Name="PART_Content"
                     Margin="8 0 0 0"
-                    MemberSelector="{Static TabControl.ContentSelector}"
+                    MemberSelector="{x:Static TabControl.ContentSelector}"
                     Items="{TemplateBinding Items}"
                     SelectedIndex="{TemplateBinding Path=SelectedIndex}"
                     Transition="{TemplateBinding Transition}"
diff --git a/samples/RenderTest/SideBar.xaml b/samples/RenderTest/SideBar.xaml
index c03bc432d4..784d1f4071 100644
--- a/samples/RenderTest/SideBar.xaml
+++ b/samples/RenderTest/SideBar.xaml
@@ -1,11 +1,11 @@
-<Styles xmlns="https://github.com/avaloniaui">
+<Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">>
   <Style Selector="TabControl.sidebar">
     <Setter Property="Template">
       <ControlTemplate>
         <DockPanel>
           <ScrollViewer MinWidth="190" Background="{DynamicResource ThemeAccentBrush}" DockPanel.Dock="Left">
             <TabStrip Name="PART_TabStrip"
-                      MemberSelector="{Static TabControl.HeaderSelector}"
+                      MemberSelector="{x:Static TabControl.HeaderSelector}"
                       Items="{TemplateBinding Items}"
                       SelectedIndex="{TemplateBinding Path=SelectedIndex, Mode=TwoWay}">
               <TabStrip.ItemsPanel>
@@ -17,7 +17,7 @@
           </ScrollViewer>
           <Carousel Name="PART_Content"
                     Margin="8 0 0 0"
-                    MemberSelector="{Static TabControl.ContentSelector}"
+                    MemberSelector="{x:Static TabControl.ContentSelector}"
                     Items="{TemplateBinding Items}"
                     SelectedIndex="{TemplateBinding Path=SelectedIndex}"
                     Transition="{TemplateBinding Transition}"
diff --git a/src/Avalonia.Themes.Default/TabControl.xaml b/src/Avalonia.Themes.Default/TabControl.xaml
index 2397ce4e95..f8fb4a1f49 100644
--- a/src/Avalonia.Themes.Default/TabControl.xaml
+++ b/src/Avalonia.Themes.Default/TabControl.xaml
@@ -1,4 +1,4 @@
-<Styles xmlns="https://github.com/avaloniaui">
+<Styles xmlns="https://github.com/avaloniaui"  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
   <Style Selector="TabControl">
     <Setter Property="Template">
       <ControlTemplate>
@@ -7,11 +7,11 @@
                 BorderThickness="{TemplateBinding BorderThickness}">
           <DockPanel>
             <TabStrip Name="PART_TabStrip"
-                      MemberSelector="{Static TabControl.HeaderSelector}"
+                      MemberSelector="{x:Static TabControl.HeaderSelector}"
                       Items="{TemplateBinding Items}"
                       SelectedIndex="{TemplateBinding Path=SelectedIndex, Mode=TwoWay}"/>
             <Carousel Name="PART_Content"
-                      MemberSelector="{Static TabControl.ContentSelector}"
+                      MemberSelector="{x:Static TabControl.ContentSelector}"
                       Items="{TemplateBinding Items}"
                       SelectedIndex="{TemplateBinding Path=SelectedIndex}"
                       Transition="{TemplateBinding Transition}"
diff --git a/src/Avalonia.Themes.Default/TextBox.xaml b/src/Avalonia.Themes.Default/TextBox.xaml
index 87d8c22663..6b8f93e714 100644
--- a/src/Avalonia.Themes.Default/TextBox.xaml
+++ b/src/Avalonia.Themes.Default/TextBox.xaml
@@ -1,4 +1,4 @@
-<Styles xmlns="https://github.com/avaloniaui">
+<Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
   <Style Selector="TextBox">
     <Setter Property="Background" Value="{DynamicResource ThemeBackgroundBrush}"/>
     <Setter Property="BorderBrush" Value="{DynamicResource ThemeBorderMidBrush}"/>
@@ -18,12 +18,12 @@
                        Text="{TemplateBinding Watermark}"
                        DockPanel.Dock="Top">
               <TextBlock.IsVisible>
-                <MultiBinding Converter="{Static BoolConverters.And}">
+                <MultiBinding Converter="{x:Static BoolConverters.And}">
                   <Binding RelativeSource="{RelativeSource TemplatedParent}"
                            Path="UseFloatingWatermark"/>
                   <Binding RelativeSource="{RelativeSource TemplatedParent}"
                            Path="Text"
-                           Converter="{Static StringConverters.NotNullOrEmpty}"/>
+                           Converter="{x:Static StringConverters.NotNullOrEmpty}"/>
                 </MultiBinding>
               </TextBlock.IsVisible>
             </TextBlock>
@@ -44,7 +44,7 @@
                 <TextBlock Name="watermark"
                            Opacity="0.5"
                            Text="{TemplateBinding Watermark}"
-                           IsVisible="{TemplateBinding Path=Text, Converter={Static StringConverters.NullOrEmpty}}"/>
+                           IsVisible="{TemplateBinding Path=Text, Converter={x:Static StringConverters.NullOrEmpty}}"/>
                 <TextPresenter Name="PART_TextPresenter"
                                Text="{TemplateBinding Text, Mode=TwoWay}"
                                CaretIndex="{TemplateBinding CaretIndex}"
diff --git a/tests/Avalonia.Markup.Xaml.UnitTests/Xaml/DataTemplateTests.cs b/tests/Avalonia.Markup.Xaml.UnitTests/Xaml/DataTemplateTests.cs
index f79d12cfde..ce51e7ad72 100644
--- a/tests/Avalonia.Markup.Xaml.UnitTests/Xaml/DataTemplateTests.cs
+++ b/tests/Avalonia.Markup.Xaml.UnitTests/Xaml/DataTemplateTests.cs
@@ -17,9 +17,10 @@ namespace Avalonia.Markup.Xaml.UnitTests.Xaml
             {
                 var xaml = @"
 <Window xmlns='https://github.com/avaloniaui'
-        xmlns:sys='clr-namespace:System;assembly=mscorlib'>
+        xmlns:sys='clr-namespace:System;assembly=mscorlib'
+        xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
     <Window.DataTemplates>
-        <DataTemplate DataType='{Type sys:String}'>
+        <DataTemplate DataType='{x:Type sys:String}'>
             <Canvas Name='foo'/>
         </DataTemplate>
     </Window.DataTemplates>
@@ -43,10 +44,10 @@ namespace Avalonia.Markup.Xaml.UnitTests.Xaml
             using (UnitTestApplication.Start(TestServices.StyledWindow))
             {
                 var xaml = @"
-<Window xmlns='https://github.com/avaloniaui'
+<Window xmlns='https://github.com/avaloniaui' xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
         xmlns:local='clr-namespace:Avalonia.Markup.Xaml.UnitTests;assembly=Avalonia.Markup.Xaml.UnitTests'>
     <Window.DataTemplates>
-        <DataTemplate DataType='{Type local:TestViewModel}'>
+        <DataTemplate DataType='{x:Type local:TestViewModel}'>
             <Canvas Name='foo' DataContext='{Binding Child}'/>
         </DataTemplate>
     </Window.DataTemplates>

From 7f455e945d7a4b3afca59366595955c3fa5d7497 Mon Sep 17 00:00:00 2001
From: Jeremy Koritzinsky <jkoritzinsky@gmail.com>
Date: Sun, 15 Oct 2017 21:33:45 -0500
Subject: [PATCH 05/12] Update Portable.Xaml

---
 Avalonia.sln                                                   | 3 ++-
 .../Avalonia.Markup.Xaml/PortableXaml/AvaloniaXamlType.cs      | 2 ++
 .../Avalonia.Markup.Xaml/PortableXaml/portable.xaml.github     | 2 +-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/Avalonia.sln b/Avalonia.sln
index 7f516667ee..c6509817ce 100644
--- a/Avalonia.sln
+++ b/Avalonia.sln
@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26730.3
+VisualStudioVersion = 15.0.26730.10
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Avalonia.Base", "src\Avalonia.Base\Avalonia.Base.csproj", "{B09B78D8-9B26-48B0-9149-D64A2F120F3F}"
 EndProject
@@ -204,6 +204,7 @@ Global
 		tests\Avalonia.RenderTests\Avalonia.RenderTests.projitems*{48840edd-24bf-495d-911e-2eb12ae75d3b}*SharedItemsImports = 13
 		src\Shared\PlatformSupport\PlatformSupport.projitems*{4a1abb09-9047-4bd5-a4ad-a055e52c5ee0}*SharedItemsImports = 4
 		src\Shared\PlatformSupport\PlatformSupport.projitems*{7863ea94-f0fb-4386-bf8c-e5bfa761560a}*SharedItemsImports = 4
+		src\Shared\PlatformSupport\PlatformSupport.projitems*{7b92af71-6287-4693-9dcb-bd5b6e927e23}*SharedItemsImports = 4
 		src\Shared\RenderHelpers\RenderHelpers.projitems*{7d2d3083-71dd-4cc9-8907-39a0d86fb322}*SharedItemsImports = 4
 		src\Windows\Avalonia.Win32\Avalonia.Win32.Shared.projitems*{811a76cf-1cf6-440f-963b-bbe31bd72a82}*SharedItemsImports = 4
 		src\Windows\Avalonia.Win32\Avalonia.Win32.Shared.projitems*{9defc6b7-845b-4d8f-afc0-d32bf0032b8c}*SharedItemsImports = 13
diff --git a/src/Markup/Avalonia.Markup.Xaml/PortableXaml/AvaloniaXamlType.cs b/src/Markup/Avalonia.Markup.Xaml/PortableXaml/AvaloniaXamlType.cs
index 71c8902cbd..0cc08ac6ee 100644
--- a/src/Markup/Avalonia.Markup.Xaml/PortableXaml/AvaloniaXamlType.cs
+++ b/src/Markup/Avalonia.Markup.Xaml/PortableXaml/AvaloniaXamlType.cs
@@ -294,6 +294,8 @@ namespace Avalonia.Markup.Xaml.PortableXaml
             return Property.IsReadOnly;
         }
 
+        protected override bool LookupIsUnknown() => false;
+
         protected override Type GetPropertyType()
         {
             return Property.PropertyType;
diff --git a/src/Markup/Avalonia.Markup.Xaml/PortableXaml/portable.xaml.github b/src/Markup/Avalonia.Markup.Xaml/PortableXaml/portable.xaml.github
index eebf9dbb92..f226a516fe 160000
--- a/src/Markup/Avalonia.Markup.Xaml/PortableXaml/portable.xaml.github
+++ b/src/Markup/Avalonia.Markup.Xaml/PortableXaml/portable.xaml.github
@@ -1 +1 @@
-Subproject commit eebf9dbb9275ecc48c18ec24f6fbad8cb494857f
+Subproject commit f226a516fe2bc191145c1fbf732f5a087f121a33

From 17337882b3cbc5d89f402caafd1448b75afedf8c Mon Sep 17 00:00:00 2001
From: Nikita Tsukanov <keks9n@gmail.com>
Date: Tue, 17 Oct 2017 13:04:12 +0300
Subject: [PATCH 06/12] [GTK3] Special resize handling for popups

---
 src/Gtk/Avalonia.Gtk3/Interop/Native.cs |  4 ++++
 src/Gtk/Avalonia.Gtk3/PopupImpl.cs      |  1 +
 src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs | 23 +++++++++++++++++++++++
 3 files changed, 28 insertions(+)

diff --git a/src/Gtk/Avalonia.Gtk3/Interop/Native.cs b/src/Gtk/Avalonia.Gtk3/Interop/Native.cs
index 15b3a11fbb..3b9007786d 100644
--- a/src/Gtk/Avalonia.Gtk3/Interop/Native.cs
+++ b/src/Gtk/Avalonia.Gtk3/Interop/Native.cs
@@ -102,6 +102,9 @@ namespace Avalonia.Gtk3.Interop
             
             [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gdk)]
             public delegate void gdk_window_resize(IntPtr gtkWindow, int width, int height);
+            
+            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gdk)]
+            public delegate void gdk_window_set_override_redirect(IntPtr gdkWindow, bool value);
 
             [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
             public delegate void gtk_widget_realize(GtkWidget gtkWidget);
@@ -402,6 +405,7 @@ namespace Avalonia.Gtk3.Interop
         public static D.gtk_window_get_size GtkWindowGetSize;
         public static D.gtk_window_resize GtkWindowResize;
         public static D.gdk_window_resize GdkWindowResize;
+        public static D.gdk_window_set_override_redirect GdkWindowSetOverrideRedirect;
         public static D.gtk_widget_set_size_request GtkWindowSetSizeRequest;
         public static D.gtk_window_set_default_size GtkWindowSetDefaultSize;
         public static D.gtk_window_get_position GtkWindowGetPosition;
diff --git a/src/Gtk/Avalonia.Gtk3/PopupImpl.cs b/src/Gtk/Avalonia.Gtk3/PopupImpl.cs
index 8fd1c28ea4..13beff580e 100644
--- a/src/Gtk/Avalonia.Gtk3/PopupImpl.cs
+++ b/src/Gtk/Avalonia.Gtk3/PopupImpl.cs
@@ -19,6 +19,7 @@ namespace Avalonia.Gtk3
 
         public PopupImpl() : base(CreateWindow())
         {
+            OverrideRedirect = true;
         }
     }
 }
diff --git a/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs b/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs
index e14ed77877..3128be23aa 100644
--- a/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs
+++ b/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs
@@ -32,6 +32,7 @@ namespace Avalonia.Gtk3
         private IDeferredRenderOperation _nextRenderOperation;
         private readonly AutoResetEvent _canSetNextOperation = new AutoResetEvent(true);
         internal IntPtr? GdkWindowHandle;
+        private bool _overrideRedirect;
         public WindowBaseImpl(GtkWindow gtkWidget)
         {
             
@@ -406,6 +407,28 @@ namespace Avalonia.Gtk3
             if (GtkWidget.IsClosed)
                 return;
             Native.GtkWindowResize(GtkWidget, (int)value.Width, (int)value.Height);
+            if (OverrideRedirect)
+            {
+                var size = ClientSize = value;
+                if (_lastSize != size)
+                {
+                    Resized?.Invoke(size);
+                    _lastSize = size;
+                }
+            }
+        }
+
+        public bool OverrideRedirect
+        {
+            get => _overrideRedirect;
+            set
+            {
+                if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+                {
+                    Native.GdkWindowSetOverrideRedirect(Native.GtkWidgetGetWindow(GtkWidget), value);
+                    _overrideRedirect = value;
+                }
+            }
         }
         
         public IScreenImpl Screen

From 4e98c3494048934f12028a30f8cbadc7cc567d49 Mon Sep 17 00:00:00 2001
From: Nikita Tsukanov <keks9n@gmail.com>
Date: Tue, 17 Oct 2017 14:08:30 +0300
Subject: [PATCH 07/12] [GTK3] Skip resize part of configure event if
 OverrideRedirect=true

---
 src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs b/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs
index 3128be23aa..136023c31d 100644
--- a/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs
+++ b/src/Gtk/Avalonia.Gtk3/WindowBaseImpl.cs
@@ -70,12 +70,15 @@ namespace Avalonia.Gtk3
         private bool OnConfigured(IntPtr gtkwidget, IntPtr ev, IntPtr userdata)
         {
             int w, h;
-            Native.GtkWindowGetSize(GtkWidget, out w, out h);
-            var size = ClientSize = new Size(w, h);
-            if (_lastSize != size)
+            if (!OverrideRedirect)
             {
-                Resized?.Invoke(size);
-                _lastSize = size;
+                Native.GtkWindowGetSize(GtkWidget, out w, out h);
+                var size = ClientSize = new Size(w, h);
+                if (_lastSize != size)
+                {
+                    Resized?.Invoke(size);
+                    _lastSize = size;
+                }
             }
             var pos = Position;
             if (_lastPosition != pos)

From ca7584ce3fef1ba5f8a7e8b7bb916dc4617a1f21 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Tue, 17 Oct 2017 23:45:00 +0200
Subject: [PATCH 08/12] Added failing test for #1218

---
 .../Avalonia.Styling.UnitTests/SetterTests.cs | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/tests/Avalonia.Styling.UnitTests/SetterTests.cs b/tests/Avalonia.Styling.UnitTests/SetterTests.cs
index 84536fa47b..9c43097a21 100644
--- a/tests/Avalonia.Styling.UnitTests/SetterTests.cs
+++ b/tests/Avalonia.Styling.UnitTests/SetterTests.cs
@@ -8,6 +8,9 @@ using Avalonia.Data;
 using Xunit;
 using System;
 using Avalonia.Controls.Templates;
+using Avalonia.Markup.Xaml.Data;
+using Avalonia.Markup;
+using System.Globalization;
 
 namespace Avalonia.Styling.UnitTests
 {
@@ -61,5 +64,39 @@ namespace Avalonia.Styling.UnitTests
 
             Assert.NotNull(NameScope.GetNameScope((Control)control.Child));
         }
+
+        [Fact]
+        public void Does_Not_Call_Converter_ConvertBack_On_OneWay_Binding()
+        {
+            var control = new Decorator { Name = "foo" };
+            var style = Mock.Of<IStyle>();
+            var binding = new Binding("Name", BindingMode.OneWay)
+            {
+                Converter = new TestConverter(),
+                RelativeSource = new RelativeSource(RelativeSourceMode.Self),
+            };
+            var setter = new Setter(Decorator.TagProperty, binding);
+            var activator = new BehaviorSubject<bool>(true);
+
+            setter.Apply(style, control, activator);
+            Assert.Equal("foobar", control.Tag);
+
+            // Issue #1218 caused TestConverter.ConvertBack to throw here.
+            activator.OnNext(false);
+            Assert.Null(control.Tag);
+        }
+
+        private class TestConverter : IValueConverter
+        {
+            public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+            {
+                return value.ToString() + "bar";
+            }
+
+            public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+            {
+                throw new NotImplementedException();
+            }
+        }
     }
 }

From dede306531fc38eef26807cd0eb028f9dbd66470 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Tue, 17 Oct 2017 23:45:35 +0200
Subject: [PATCH 09/12] Fixed #1218

---
 src/Avalonia.Styling/Styling/Setter.cs | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/Avalonia.Styling/Styling/Setter.cs b/src/Avalonia.Styling/Styling/Setter.cs
index d065b231ce..eb5218cd6f 100644
--- a/src/Avalonia.Styling/Styling/Setter.cs
+++ b/src/Avalonia.Styling/Styling/Setter.cs
@@ -141,20 +141,20 @@ namespace Avalonia.Styling
             {
                 var description = style?.ToString();
 
-                if (sourceInstance.Subject != null)
+                if (sourceInstance.Mode == BindingMode.TwoWay || sourceInstance.Mode == BindingMode.OneWayToSource)
                 {
                     var activated = new ActivatedSubject(activator, sourceInstance.Subject, description);
                     cloned = new InstancedBinding(activated, sourceInstance.Mode, BindingPriority.StyleTrigger);
                 }
-                else if (sourceInstance.Observable != null)
+                else if (sourceInstance.Mode == BindingMode.OneTime)
                 {
-                    var activated = new ActivatedObservable(activator, sourceInstance.Observable, description);
-                    cloned = new InstancedBinding(activated, sourceInstance.Mode, BindingPriority.StyleTrigger);
+                    var activated = new ActivatedValue(activator, sourceInstance.Value, description);
+                    cloned = new InstancedBinding(activated, BindingMode.OneWay, BindingPriority.StyleTrigger);
                 }
                 else
                 {
-                    var activated = new ActivatedValue(activator, sourceInstance.Value, description);
-                    cloned = new InstancedBinding(activated, BindingMode.OneWay, BindingPriority.StyleTrigger);
+                    var activated = new ActivatedObservable(activator, sourceInstance.Observable ?? sourceInstance.Subject, description);
+                    cloned = new InstancedBinding(activated, sourceInstance.Mode, BindingPriority.StyleTrigger);
                 }
             }
             else

From 7f16137f905748a36454c1f7391c3ab19dc67d44 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Wed, 18 Oct 2017 17:46:50 +0200
Subject: [PATCH 10/12] Fix RenderTest default orientation.

7cb4485d changed the order of the `Orientation` enum members to match WPF but didn't change the default in `RenderTest`  which caused it to display horizontal by default. Fix this.
---
 samples/VirtualizationTest/ViewModels/MainWindowViewModel.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/VirtualizationTest/ViewModels/MainWindowViewModel.cs b/samples/VirtualizationTest/ViewModels/MainWindowViewModel.cs
index a0e1570a36..f47627acb4 100644
--- a/samples/VirtualizationTest/ViewModels/MainWindowViewModel.cs
+++ b/samples/VirtualizationTest/ViewModels/MainWindowViewModel.cs
@@ -17,7 +17,7 @@ namespace VirtualizationTest.ViewModels
         private int _newItemIndex;
         private IReactiveList<ItemViewModel> _items;
         private string _prefix = "Item";
-        private Orientation _orientation;
+        private Orientation _orientation = Orientation.Vertical;
         private ItemVirtualizationMode _virtualizationMode = ItemVirtualizationMode.Simple;
 
         public MainWindowViewModel()

From a38dfada10871d82eed1a78ed9b2217b02994f9d Mon Sep 17 00:00:00 2001
From: Jeremy Koritzinsky <jkoritzinsky@gmail.com>
Date: Wed, 18 Oct 2017 10:54:27 -0500
Subject: [PATCH 11/12] Fix malformed XAML

---
 samples/RenderTest/SideBar.xaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/RenderTest/SideBar.xaml b/samples/RenderTest/SideBar.xaml
index 784d1f4071..7fcd828ba3 100644
--- a/samples/RenderTest/SideBar.xaml
+++ b/samples/RenderTest/SideBar.xaml
@@ -1,4 +1,4 @@
-<Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">>
+<Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
   <Style Selector="TabControl.sidebar">
     <Setter Property="Template">
       <ControlTemplate>

From 871d689445d8f34b960cf2bb76f582ab8d01144d Mon Sep 17 00:00:00 2001
From: Jeremy Koritzinsky <jkoritzinsky@gmail.com>
Date: Wed, 18 Oct 2017 14:52:11 -0500
Subject: [PATCH 12/12] Mark properties tracked by all of our XAML property
 types as not unkown.

---
 .../Avalonia.Markup.Xaml/PortableXaml/AvaloniaXamlType.cs     | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Markup/Avalonia.Markup.Xaml/PortableXaml/AvaloniaXamlType.cs b/src/Markup/Avalonia.Markup.Xaml/PortableXaml/AvaloniaXamlType.cs
index 0cc08ac6ee..a38029964f 100644
--- a/src/Markup/Avalonia.Markup.Xaml/PortableXaml/AvaloniaXamlType.cs
+++ b/src/Markup/Avalonia.Markup.Xaml/PortableXaml/AvaloniaXamlType.cs
@@ -135,6 +135,8 @@ namespace Avalonia.Markup.Xaml.PortableXaml
             };
         }
 
+        protected override bool LookupIsUnknown() => false;
+
         protected override XamlType LookupType()
         {
             var propType = GetPropertyType();
@@ -294,8 +296,6 @@ namespace Avalonia.Markup.Xaml.PortableXaml
             return Property.IsReadOnly;
         }
 
-        protected override bool LookupIsUnknown() => false;
-
         protected override Type GetPropertyType()
         {
             return Property.PropertyType;