Native Bindings (#278)

* [C, I, A, W] Support Native Bindings

* fix tabs

1 files changed, 58 insertions, 0 deletions

diff --git a/Xamarin.Forms.Platform.WinRT/NativeBindingExtensions.cs b/Xamarin.Forms.Platform.WinRT/NativeBindingExtensions.cs
new file mode 100644
index 00000000..cc88c87e
--- /dev/null
+++ b/Xamarin.Forms.Platform.WinRT/NativeBindingExtensions.cs
@@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using Windows.UI.Xaml;
+using static System.String;
+#if WINDOWS_UWP
+
+namespace Xamarin.Forms.Platform.UWP
+#else
+
+namespace Xamarin.Forms.Platform.WinRT
+#endif
+{
+	public static class NativeBindingExtensions
+	{
+		public static void SetBinding(this FrameworkElement view, string propertyName, BindingBase bindingBase, string updateSourceEventName = null)
+		{
+			var binding = bindingBase as Binding;
+			updateSourceEventName = updateSourceEventName ?? binding?.UpdateSourceEventName;
+
+			if (IsNullOrEmpty(updateSourceEventName))
+			{
+				NativePropertyListener nativePropertyListener = null;
+				if (bindingBase.Mode == BindingMode.TwoWay)
+					nativePropertyListener = new NativePropertyListener(view, propertyName);
+
+				NativeBindingHelpers.SetBinding(view, propertyName, bindingBase, nativePropertyListener as INotifyPropertyChanged);
+				return;
+			}
+
+			NativeEventWrapper eventE = null;
+			if (binding.Mode == BindingMode.TwoWay && !(view is INotifyPropertyChanged))
+				eventE = new NativeEventWrapper(view, propertyName, updateSourceEventName);
+
+			NativeBindingHelpers.SetBinding(view, propertyName, binding, eventE);
+		}
+
+		public static void SetBinding(this FrameworkElement view, BindableProperty targetProperty, BindingBase binding)
+		{
+			NativeBindingHelpers.SetBinding(view, targetProperty, binding);
+		}
+
+		public static void SetValue(this FrameworkElement target, BindableProperty targetProperty, object value)
+		{
+			NativeBindingHelpers.SetValue(target, targetProperty, value);
+		}
+
+		public static void SetBindingContext(this FrameworkElement target, object bindingContext, Func<FrameworkElement, IEnumerable<FrameworkElement>> getChildren = null)
+		{
+			NativeBindingHelpers.SetBindingContext(target, bindingContext, getChildren);
+		}
+
+		internal static void TransferbindablePropertiesToWrapper(this FrameworkElement target, View wrapper)
+		{
+			NativeBindingHelpers.TransferBindablePropertiesToWrapper(target, wrapper);
+		}
+	}
+}
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