1 files changed, 121 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.WinRT.Tablet/Forms.cs b/Xamarin.Forms.Platform.WinRT.Tablet/Forms.cs
new file mode 100644
index 00000000..cc5ef334
--- /dev/null
+++ b/Xamarin.Forms.Platform.WinRT.Tablet/Forms.cs
@@ -0,0 +1,121 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Reflection;
+using Windows.ApplicationModel.Activation;
+using Windows.Foundation.Metadata;
+using Windows.UI.Core;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Media;
+#if WINDOWS_UWP
+using Xamarin.Forms.Platform.UWP;
+
+#else
+using Xamarin.Forms.Platform.WinRT;
+
+#endif
+
+namespace Xamarin.Forms
+{
+	public static class Forms
+	{
+		const string LogFormat = "[{0}] {1}";
+
+		static ApplicationExecutionState s_state;
+		static bool s_isInitialized;
+#if WINDOWS_UWP
+		public static void Init(IActivatedEventArgs launchActivatedEventArgs, IEnumerable<Assembly> rendererAssemblies = null)
+#else
+		public static void Init(IActivatedEventArgs launchActivatedEventArgs)
+#endif
+		{
+			if (s_isInitialized)
+				return;
+
+			var accent = (SolidColorBrush)Windows.UI.Xaml.Application.Current.Resources["SystemColorControlAccentBrush"];
+			Color.Accent = Color.FromRgba(accent.Color.R, accent.Color.G, accent.Color.B, accent.Color.A);
+
+			Log.Listeners.Add(new DelegateLogListener((c, m) => Debug.WriteLine(LogFormat, c, m)));
+
+			Windows.UI.Xaml.Application.Current.Resources.MergedDictionaries.Add(GetTabletResources());
+
+			Device.OS = TargetPlatform.Windows;
+			Device.Idiom = TargetIdiom.Tablet;
+			Device.PlatformServices = new WindowsPlatformServices(Window.Current.Dispatcher);
+			Device.Info = new WindowsDeviceInfo();
+
+#if WINDOWS_UWP
+			switch (DetectPlatform())
+			{
+				case Windows.Foundation.Metadata.Platform.Windows:
+					Device.Idiom = TargetIdiom.Desktop;
+					break;
+				case Windows.Foundation.Metadata.Platform.WindowsPhone:
+					Device.Idiom = TargetIdiom.Phone;
+					break;
+				default:
+					Device.Idiom = TargetIdiom.Tablet;
+					break;
+			}
+#endif
+			Ticker.Default = new WindowsTicker();
+
+			ExpressionSearch.Default = new WindowsExpressionSearch();
+
+#if WINDOWS_UWP
+			Registrar.ExtraAssemblies = rendererAssemblies?.ToArray();
+#endif
+
+			Registrar.RegisterAll(new[] { typeof(ExportRendererAttribute), typeof(ExportCellAttribute), typeof(ExportImageSourceHandlerAttribute) });
+
+			s_isInitialized = true;
+			s_state = launchActivatedEventArgs.PreviousExecutionState;
+
+#if WINDOWS_UWP
+			SystemNavigationManager.GetForCurrentView().BackRequested += OnBackRequested;
+#endif
+		}
+
+		static Windows.Foundation.Metadata.Platform DetectPlatform()
+		{
+#if WINDOWS_UWP
+			bool isHardwareButtonsAPIPresent = ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons");
+
+			if (isHardwareButtonsAPIPresent)
+				return Windows.Foundation.Metadata.Platform.WindowsPhone;
+#endif
+			return Windows.Foundation.Metadata.Platform.Windows;
+		}
+
+		static Windows.UI.Xaml.ResourceDictionary GetTabletResources()
+		{
+			return new Windows.UI.Xaml.ResourceDictionary {
+#if !WINDOWS_UWP
+				Source = new Uri("ms-appx:///Xamarin.Forms.Platform.WinRT.Tablet/TabletResources.xbf")
+#else
+				Source = new Uri("ms-appx:///Xamarin.Forms.Platform.UAP/Resources.xbf")
+#endif
+			};
+		}
+
+#if WINDOWS_UWP
+		static void OnBackRequested(object sender, BackRequestedEventArgs e)
+		{
+			Application app = Application.Current;
+			if (app == null)
+				return;
+
+			Page page = app.MainPage;
+			if (page == null)
+				return;
+
+			var platform = page.Platform as Platform.UWP.Platform;
+			if (platform == null)
+				return;
+
+			e.Handled = platform.BackButtonPressed();
+		}
+#endif
+	}
+}
+\ No newline at end of file