[Xwt.Mac] Add embed backend for NSView

3 files changed, 52 insertions, 0 deletions

diff --git a/Xwt.Mac/Xwt.Mac.csproj b/Xwt.Mac/Xwt.Mac.csproj
index 0c250b49..7847cce8 100644
--- a/Xwt.Mac/Xwt.Mac.csproj
+++ b/Xwt.Mac/Xwt.Mac.csproj
@@ -121,6 +121,7 @@
     <Compile Include="Xwt.Mac\DatePickerBackend.cs" />
     <Compile Include="Xwt.Mac\SliderBackend.cs" />
     <Compile Include="Xwt.Mac.CellViews\CheckBoxTableCell.cs" />
+    <Compile Include="Xwt.Mac\EmbedNativeWidgetBackend.cs" />
   </ItemGroup>
   <Import Project="..\BuildHelpers.targets" />
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
diff --git a/Xwt.Mac/Xwt.Mac/EmbedNativeWidgetBackend.cs b/Xwt.Mac/Xwt.Mac/EmbedNativeWidgetBackend.cs
new file mode 100644
index 00000000..ba291fdc
--- /dev/null
+++ b/Xwt.Mac/Xwt.Mac/EmbedNativeWidgetBackend.cs
@@ -0,0 +1,50 @@
+using System;
+using Xwt.Backends;
+using MonoMac.AppKit;
+using MonoMac.Foundation;
+
+using MonoMac.ObjCRuntime;
+using Xwt.Drawing;
+
+namespace Xwt.Mac
+{
+	public class EmbedNativeWidgetBackend : ViewBackend, IEmbeddedWidgetBackend
+	{
+		NSView innerView;
+
+		public EmbedNativeWidgetBackend ()
+		{
+
+		}
+
+		public override void Initialize ()
+		{
+			ViewObject = new WidgetView (EventSink, ApplicationContext);
+			if (innerView != null) {
+				var aView = innerView;
+				innerView = null;
+				SetNativeView (aView);
+			}
+		}
+
+		public void SetContent (object nativeWidget)
+		{
+			if (nativeWidget is NSView) {
+				if (ViewObject == null)
+					innerView = (NSView)nativeWidget;
+				else
+					SetNativeView ((NSView)nativeWidget);
+			}
+		}
+
+		void SetNativeView (NSView aView)
+		{
+			if (innerView != null)
+				innerView.RemoveFromSuperview ();
+			innerView = aView;
+			innerView.Frame = Widget.Bounds;
+			Widget.AddSubview (innerView);
+		}
+	}
+}
+
diff --git a/Xwt.Mac/Xwt.Mac/MacEngine.cs b/Xwt.Mac/Xwt.Mac/MacEngine.cs
index 1f0e503f..de6b372b 100644
--- a/Xwt.Mac/Xwt.Mac/MacEngine.cs
+++ b/Xwt.Mac/Xwt.Mac/MacEngine.cs
@@ -119,6 +119,7 @@ namespace Xwt.Mac
 			RegisterBackend <Xwt.Backends.IScrollbarBackend, ScrollbarBackend> ();
 			RegisterBackend <Xwt.Backends.IDatePickerBackend, DatePickerBackend> ();
 			RegisterBackend <Xwt.Backends.ISliderBackend, SliderBackend> ();
+			RegisterBackend <Xwt.Backends.IEmbeddedWidgetBackend, EmbedNativeWidgetBackend> ();
 		}
 
 		public override void RunApplication ()