feature: Add support for Xamarin TV.OS (reactiveui#1706)

.github/CODEOWNERS

@@ -27,6 +27,7 @@ src/ReactiveUI/Platforms/net461/*          @reactiveui/wpf-team @reactiveui/winf
 src/ReactiveUI/Platforms/netcoreapp2.0/*   @reactiveui/dotnetcore-team @reactiveui/webassembly-team
 src/ReactiveUI/Platforms/uap10.0.16299/*   @reactiveui/uwp-team
 src/ReactiveUI/Platforms/tizen/*           @reactiveui/tizen-team
+src/ReactiveUI/Platforms/tvos/*            @reactiveui/tvos-team
 src/ReactiveUI/Platforms/windows-common/*  @reactiveui/wpf-team @reactiveui/winforms-team @reactiveui/uwp-team
 src/ReactiveUI/Platforms/xamarin-common/*  @reactiveui/xamarin-forms-team
 

build.cake

@@ -175,6 +175,8 @@ Task("GenerateEvents")
     generate("wpf", "src/ReactiveUI.Events.WPF/");
     generate("xamforms", "src/ReactiveUI.Events.XamForms/");
     generate("winforms", "src/ReactiveUI.Events.Winforms/");
+    generate("essentials", "src/ReactiveUI.Events/");
+    generate("tvos", "src/ReactiveUI.Events/");
 });
 
 Task("BuildReactiveUI")

src/Directory.build.props

@@ -7,7 +7,7 @@
     <Authors>.NET Foundation and Contributors</Authors>
     <Owners>xpaulbettsx;ghuntley</Owners>
     <Product>ReactiveUI ($(TargetFramework))</Product>
-    <PackageTags>mvvm;reactiveui;rx;reactive extensions;observable;LINQ;events;frp;xamarin;android;ios;mac;forms;monodroid;monotouch;xamarin.android;xamarin.ios;xamarin.forms;xamarin.mac;wpf;net;netstandard;net461;uwp;tizen</PackageTags>
+    <PackageTags>mvvm;reactiveui;rx;reactive extensions;observable;LINQ;events;frp;xamarin;android;ios;mac;forms;monodroid;monotouch;xamarin.android;xamarin.ios;xamarin.forms;xamarin.mac;xamarin.tvos;wpf;net;netstandard;net461;uwp;tizen</PackageTags>
     <PackageReleaseNotes>https://reactiveui.net/blog/</PackageReleaseNotes>
 
     <NoWarn>$(NoWarn);1591;1701;1702;1705</NoWarn>

src/Directory.build.targets

@@ -13,6 +13,9 @@
   </PropertyGroup>
    <PropertyGroup Condition="'$(TargetFramework)' == 'Xamarin.Mac20'">
     <DefineConstants>$(DefineConstants);MONO;COCOA</DefineConstants>
+  </PropertyGroup>
+   <PropertyGroup Condition="'$(TargetFramework)' == 'Xamarin.TVOS10'">
+    <DefineConstants>$(DefineConstants);MONO;UIKIT;COCOA;TVOS10</DefineConstants>
   </PropertyGroup>
   <PropertyGroup Condition="'$(TargetFramework)' == 'MonoAndroid80'">
     <DefineConstants>$(DefineConstants);MONO;ANDROID</DefineConstants>

src/EventBuilder/CommandLineOptions.cs

@@ -19,6 +19,7 @@ public enum AutoPlatform
         XamForms,
         UWP,
         Winforms,
+        TVOS,
         Essentials
     }
 
@@ -29,7 +30,7 @@ public class CommandLineOptions
 
         [Option('p', "platform", Required = true,
             HelpText =
-                "Platform to automatically generate. Possible options include: NONE, ANDROID, IOS, WPF, MAC, TIZEN, UWP, XAMFORMS, WINFORMS"
+                "Platform to automatically generate. Possible options include: NONE, ANDROID, IOS, WPF, MAC, TIZEN, UWP, XAMFORMS, WINFORMS, TVOS"
             )]
         public AutoPlatform Platform { get; set; }
 

src/EventBuilder/Platforms/tvOS.cs

@@ -0,0 +1,35 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.IO;
+using System.Linq;
+
+namespace EventBuilder.Platforms
+{
+    // ReSharper disable once InconsistentNaming
+    public class TVOS : BasePlatform
+    {
+        public override AutoPlatform Platform => AutoPlatform.TVOS;
+
+        public TVOS(string referenceAssembliesLocation)
+        {
+            if (PlatformHelper.IsRunningOnMono()) {
+                var assembly =
+                    @"/Library/Frameworks/Xamarin.iOS.framework/Versions/Current/lib/mono/Xamarin.TVOS10/Xamarin.TVOS10.dll";
+                Assemblies.Add(assembly);
+
+                CecilSearchDirectories.Add(Path.GetDirectoryName(assembly));
+            } else {
+                var assemblies =
+                    Directory.GetFiles(Path.Combine(referenceAssembliesLocation, "Xamarin.TVOS"),
+                        "Xamarin.TVOS.dll", SearchOption.AllDirectories);
+
+                var latestVersion = assemblies.Last();
+                Assemblies.Add(latestVersion);
+
+                CecilSearchDirectories.Add(Path.GetDirectoryName(latestVersion));
+            }
+        }
+    }
+}

src/EventBuilder/Program.cs

@@ -93,7 +93,11 @@ private static void Main(string[] args)
                         platform = new Mac(_referenceAssembliesLocation);
                         break;
 
-                    case AutoPlatform.WPF:
+                    case AutoPlatform.TVOS:
+                        platform = new TVOS(_referenceAssembliesLocation);
+                        break;
+
+					case AutoPlatform.WPF:
                         platform = new WPF();
                         break;
 

src/ReactiveUI.Events/ReactiveUI.Events.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="MSBuild.Sdk.Extras">
   <PropertyGroup>
-    <TargetFrameworks>uap10.0.16299;Xamarin.iOS10;Xamarin.Mac20;MonoAndroid80;tizen40</TargetFrameworks>
+    <TargetFrameworks>uap10.0.16299;Xamarin.iOS10;Xamarin.Mac20;Xamarin.TVOS10;MonoAndroid80;tizen40</TargetFrameworks>
     <AssemblyName>ReactiveUI.Events</AssemblyName>
     <RootNamespace>ReactiveUI.Events</RootNamespace>
     <Description>Provides Observable-based events API for common UI controls/eventhandlers. The contents of this package is automatically generated, please target pull-requests to the code generator.</Description>
@@ -43,4 +43,8 @@
   <ItemGroup Condition=" '$(TargetFramework)' == 'Xamarin.Mac20' ">
     <Reference Include="netstandard" />
   </ItemGroup>
+
+  <ItemGroup Condition=" '$(TargetFramework)' == 'Xamarin.TVOS10' ">
+    <Reference Include="netstandard" />
+  </ItemGroup>
 </Project>

src/ReactiveUI.Fody.Helpers/ReactiveUI.Fody.Helpers.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="MSBuild.Sdk.Extras">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net461;uap10.0.16299;Xamarin.iOS10;Xamarin.Mac20;MonoAndroid80;netcoreapp2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net461;uap10.0.16299;Xamarin.iOS10;Xamarin.Mac20;Xamarin.TVOS10;MonoAndroid80;netcoreapp2.0</TargetFrameworks>
     <AssemblyName>ReactiveUI.Fody.Helpers</AssemblyName>
     <RootNamespace>ReactiveUI.Fody.Helpers</RootNamespace>
     <Description>Fody extension to generate RaisePropertyChange notifications for properties and ObservableAsPropertyHelper properties.</Description>
@@ -28,6 +28,10 @@
     <Reference Include="System.Runtime.Serialization" />    
   </ItemGroup>
 
+  <ItemGroup Condition="$(TargetFramework.StartsWith('Xamarin.TVOS10'))">
+    <Reference Include="System.Runtime.Serialization" />    
+  </ItemGroup>
+
   <ItemGroup Condition="$(TargetFramework.StartsWith('Xamarin.Mac'))">
     <Reference Include="System.Runtime.Serialization" />    
   </ItemGroup>

src/ReactiveUI.Testing/ReactiveUI.Testing.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="MSBuild.Sdk.Extras">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netcoreapp2.0;net461;uap10.0.16299;Xamarin.iOS10;Xamarin.Mac20;MonoAndroid80</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netcoreapp2.0;net461;uap10.0.16299;Xamarin.iOS10;Xamarin.Mac20;Xamarin.TVOS10;MonoAndroid80</TargetFrameworks>
     <AssemblyName>ReactiveUI.Testing</AssemblyName>
     <RootNamespace>ReactiveUI.Testing</RootNamespace>
     <Description>A library to aid in writing unit tests for ReactiveUI projects</Description>

src/ReactiveUI/Platforms/apple-common/PlatformOperations.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
@@ -11,7 +11,7 @@ public class PlatformOperations : IPlatformOperations
     {
         public string GetOrientation()
         {
-#if UIKIT
+#if UIKIT && !TVOS10
             return UIKit.UIDevice.CurrentDevice.Orientation.ToString();
 #else
             return null;

src/ReactiveUI/Platforms/tvos/LinkerOverrides.cs

@@ -0,0 +1,57 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using UIKit;
+
+namespace ReactiveUI.Cocoa
+{
+    /// <summary>
+    /// This class exists to force the MT linker to include properties called by RxUI via reflection
+    /// </summary>
+    [Preserve(AllMembers = true)]
+    class LinkerOverrides
+    {
+        public void KeepMe()
+        {
+            // UIButon
+            var btn = new UIButton();
+            var title = btn.Title(UIControlState.Disabled);
+            btn.SetTitle("foo", UIControlState.Disabled);
+            btn.TitleLabel.Text = btn.TitleLabel.Text;
+
+            // UITextView
+            var tv = new UITextView();
+            tv.Text = tv.Text;
+
+            // UITextField
+            var tf = new UITextField();
+            tv.Text = tf.Text;
+
+            // var UIImageView
+            var iv = new UIImageView();
+            iv.Image = iv.Image;
+
+            // UI Label
+            var lbl = new UILabel();
+            lbl.Text = lbl.Text;
+
+            // UI Control
+            var ctl = new UIControl();
+            ctl.Enabled = ctl.Enabled;
+            ctl.Selected = ctl.Selected;
+
+            EventHandler eh = (s, e) => { };
+            ctl.TouchUpInside += eh;
+            ctl.TouchUpInside -= eh;
+
+            // UIBarButtonItem
+            var bbi = new UIBarButtonItem();
+            bbi.Clicked += eh;
+            bbi.Clicked -= eh;
+
+            eh.Invoke(null, null);
+        }
+    }
+}

src/ReactiveUI/Platforms/tvos/UIKitCommandBinders.cs

@@ -0,0 +1,22 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Reflection;
+using UIKit;
+
+namespace ReactiveUI
+{
+    public class UIKitCommandBinders : FlexibleCommandBinder
+    {
+        public static Lazy<UIKitCommandBinders> Instance = new Lazy<UIKitCommandBinders>();
+
+        public UIKitCommandBinders()
+        {
+            Register(typeof(UIControl), 9, (cmd, t, cp) => ForTargetAction(cmd, t, cp, typeof(UIControl).GetRuntimeProperty("Enabled")));
+            Register(typeof(UIBarButtonItem), 10, (cmd, t, cp) => ForEvent(cmd, t, cp, "Clicked", typeof(UIBarButtonItem).GetRuntimeProperty("Enabled")));
+        }
+    }
+}
+

src/ReactiveUI/Platforms/tvos/UIKitObservableForProperty.cs

@@ -0,0 +1,31 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using UIKit;
+
+namespace ReactiveUI
+{
+    [Preserve]
+    public class UIKitObservableForProperty : ObservableForPropertyBase
+    {
+        public static Lazy<UIKitObservableForProperty> Instance = new Lazy<UIKitObservableForProperty>();
+
+        public UIKitObservableForProperty()
+        {
+            Register(typeof(UIControl), "Value", 20, (s, p) => ObservableFromUIControlEvent(s, p, UIControlEvent.ValueChanged));
+            Register(typeof(UITextField), "Text", 30, (s, p) => ObservableFromNotification(s, p, UITextField.TextFieldTextDidChangeNotification));
+            Register(typeof(UITextView), "Text", 30, (s, p) => ObservableFromNotification(s, p, UITextView.TextDidChangeNotification));
+            Register(typeof(UISegmentedControl), "SelectedSegment", 30, (s, p) => ObservableFromUIControlEvent(s, p, UIControlEvent.ValueChanged));
+            Register(typeof(UISegmentedControl), "SelectedSegment", 30, (s, p) => ObservableFromUIControlEvent(s, p, UIControlEvent.ValueChanged));
+
+            // Warning: This will stomp the Control's delegate
+            Register(typeof(UITabBar), "SelectedItem", 30, (s, p) => ObservableFromEvent(s, p, "ItemSelected"));
+
+            // Warning: This will stomp the Control's delegate
+            Register(typeof(UISearchBar), "Text", 30, (s, p) => ObservableFromEvent(s, p, "TextChanged"));
+        }
+    }
+}
+

src/ReactiveUI/ReactiveUI.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="MSBuild.Sdk.Extras">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net461;uap10.0.16299;Xamarin.iOS10;Xamarin.Mac20;MonoAndroid80;netcoreapp2.0;tizen40</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net461;uap10.0.16299;Xamarin.iOS10;Xamarin.Mac20;Xamarin.TVOS10;MonoAndroid80;netcoreapp2.0;tizen40</TargetFrameworks>
     <AssemblyName>ReactiveUI</AssemblyName>
     <RootNamespace>ReactiveUI</RootNamespace>
     <Description>A MVVM framework that integrates with the Reactive Extensions for .NET to create elegant, testable User Interfaces that run on any mobile or desktop platform. Supports Xamarin.iOS, Xamarin.Android, Xamarin.Mac, Xamarin Forms, WPF, Windows Forms, Windows Phone 8.1, Windows Store and Universal Windows Platform (UWP).</Description>
@@ -39,6 +39,7 @@
   <ItemGroup Condition=" '$(TargetFramework)' == 'Xamarin.iOS10' ">
     <Compile Include="Platforms\apple-common\**\*.cs" />
     <Compile Include="Platforms\ios\**\*.cs" />
+    <Compile Include="Platforms\uikit-common\**\*.cs" />
     <Compile Include="Platforms\xamarin-common\**\*.cs" />
     <Reference Include="System.Runtime.Serialization" />
   </ItemGroup>
@@ -51,6 +52,14 @@
     <Reference Include="netstandard" />
   </ItemGroup>
 
+    <ItemGroup Condition=" '$(TargetFramework)' == 'Xamarin.TVOS10' ">
+    <Compile Include="Platforms\apple-common\**\*.cs" />
+    <Compile Include="Platforms\tvos\**\*.cs" />
+    <Compile Include="Platforms\uikit-common\**\*.cs" />	
+    <Compile Include="Platforms\xamarin-common\**\*.cs" />
+    <Reference Include="System.Runtime.Serialization" />
+  </ItemGroup>
+
   <ItemGroup Condition=" '$(TargetFramework)' == 'MonoAndroid80' ">
     <Compile Include="Platforms\android\**\*.cs" />
     <Compile Include="Platforms\xamarin-common\**\*.cs" />