[DeviceDiscoveryUI] Added bindings for DeviceDiscoveryUI. (#20271)

Follow-up of #15762.

---------

Co-authored-by: Israel Soto <issoto@microsoft.com>

src/DeviceDiscoveryUI/DDDevicePickerViewController.cs

@@ -0,0 +1,62 @@
+//
+// Custom methods for DDDevicePickerViewController
+//
+// Authors:
+//	Israel Soto  <issoto@microsoft.com>
+//
+// Copyright 2022 Microsoft Corporation.
+//
+
+#nullable enable
+
+using ObjCRuntime;
+using Foundation;
+using Network;
+using System;
+
+using OS_nw_endpoint = System.IntPtr;
+using OS_nw_error = System.IntPtr;
+
+namespace DeviceDiscoveryUI {
+
+	public partial class DDDevicePickerViewController {
+		/// <summary>
+		/// The type of the delegate that will be called when the user selects a device in the list of devices.
+		/// </summary>
+		public delegate void DevicePickerCompletionHandler (NWEndpoint? endpoint, NWError? error);
+
+		/// <summary>
+		/// Checks if device discovery is supported for the current device
+		/// </summary>
+		public static bool IsSupported (NWBrowserDescriptor browseDescriptor, NWParameters? parameters) =>
+			_IsSupported (browseDescriptor.GetNonNullHandle (nameof (browseDescriptor)), parameters.GetHandle ());
+
+		/// <summary>
+		/// A view controller that lists other devices on your network.
+		/// </summary>
+		/// <remarks>
+		/// Verify if this controller is supported by calling DDDevicePickerViewController.IsSupported before creating an instance, as this will crash if not supported.
+		/// </remarks>
+		[DesignatedInitializer]
+		public DDDevicePickerViewController (NWBrowserDescriptor browseDescriptor, NWParameters? parameters) : base (NSObjectFlag.Empty) =>
+			InitializeHandle (
+				_InitWithBrowseDescriptorAndParameters (browseDescriptor.GetNonNullHandle (nameof (browseDescriptor)), parameters.GetHandle ()),
+				"initWithBrowseDescriptor:parameters:");
+
+		/// <summary>
+		/// Set the delegate that will be called when the user selects a device in list of devices.
+		/// </summary>
+		public void SetDevicePicker (DevicePickerCompletionHandler devicePickerCompletionHandler)
+		{
+			_SetDevicePicker (InternalDevicePickerCompletionHandler);
+
+			void InternalDevicePickerCompletionHandler (OS_nw_endpoint endpoint, OS_nw_error error)
+			{
+				NWEndpoint? ep = endpoint != IntPtr.Zero ? new NWEndpoint (endpoint, false) : null;
+				NWError? er = error != IntPtr.Zero ? new NWError (error, false) : null;
+
+				devicePickerCompletionHandler (ep, er);
+			}
+		}
+	}
+}

src/build/generator-frameworks.g.cs

@@ -366,6 +366,7 @@ partial class Frameworks {
 		"CoreText",
 		"CoreVideo",
 		"DeviceCheck",
+		"DeviceDiscoveryUI",
 		"ExternalAccessory",
 		"Foundation",
 		"GameController",
@@ -603,6 +604,7 @@ partial class Frameworks {
 	bool? _CoreVideo;
 	bool? _CoreWlan;
 	bool? _DeviceCheck;
+	bool? _DeviceDiscoveryUI;
 	bool? _EventKit;
 	bool? _EventKitUI;
 	bool? _ExecutionPolicy;
@@ -768,6 +770,7 @@ partial class Frameworks {
 	public bool HaveCoreVideo { get { if (!_CoreVideo.HasValue) _CoreVideo = GetValue ("CoreVideo"); return _CoreVideo.Value; } }
 	public bool HaveCoreWlan { get { if (!_CoreWlan.HasValue) _CoreWlan = GetValue ("CoreWlan"); return _CoreWlan.Value; } }
 	public bool HaveDeviceCheck { get { if (!_DeviceCheck.HasValue) _DeviceCheck = GetValue ("DeviceCheck"); return _DeviceCheck.Value; } }
+	public bool HaveDeviceDiscoveryUI { get { if (!_DeviceDiscoveryUI.HasValue) _DeviceDiscoveryUI = GetValue ("DeviceDiscoveryUI"); return _DeviceDiscoveryUI.Value; } }
 	public bool HaveEventKit { get { if (!_EventKit.HasValue) _EventKit = GetValue ("EventKit"); return _EventKit.Value; } }
 	public bool HaveEventKitUI { get { if (!_EventKitUI.HasValue) _EventKitUI = GetValue ("EventKitUI"); return _EventKitUI.Value; } }
 	public bool HaveExecutionPolicy { get { if (!_ExecutionPolicy.HasValue) _ExecutionPolicy = GetValue ("ExecutionPolicy"); return _ExecutionPolicy.Value; } }

src/devicediscoveryui.cs

@@ -0,0 +1,46 @@
+//
+// DeviceDiscoveryUI C# bindings
+//
+// Authors:
+//	Israel Soto  <issoto@microsoft.com>
+//
+// Copyright 2022 Microsoft Corporation.
+//
+
+using System;
+using Foundation;
+using ObjCRuntime;
+using UIKit;
+
+using OS_nw_browse_descriptor = System.IntPtr;
+using OS_nw_parameters = System.IntPtr;
+using OS_nw_endpoint = System.IntPtr;
+using OS_nw_error = System.IntPtr;
+
+#if !NET
+using NativeHandle = System.IntPtr;
+#endif
+
+namespace DeviceDiscoveryUI {
+
+	[Internal]
+	delegate void _DevicePickerCompletionHandler ([NullAllowed] OS_nw_endpoint endpoint, [NullAllowed] OS_nw_error error);
+
+	[NoMac, NoiOS, NoMacCatalyst, NoWatch, TV (16, 0)]
+	[BaseType (typeof (UIViewController))]
+	[DisableDefaultCtor]
+	interface DDDevicePickerViewController {
+		[Internal]
+		[Static]
+		[Export ("isSupportedForBrowseDescriptor:parameters:")]
+		bool _IsSupported (OS_nw_browse_descriptor browseDescriptor, [NullAllowed] OS_nw_parameters parameters);
+
+		[Internal]
+		[Export ("initWithBrowseDescriptor:parameters:")]
+		NativeHandle _InitWithBrowseDescriptorAndParameters (OS_nw_browse_descriptor browseDescriptor, [NullAllowed] OS_nw_parameters parameters);
+
+		[Internal]
+		[Export ("setDevicePickerCompletionHandler:")]
+		void _SetDevicePicker (_DevicePickerCompletionHandler devicePickerCompletionHandler);
+	}
+}

src/frameworks.sources

@@ -726,6 +726,11 @@ COREWLAN_SOURCES = \
 	CoreWlan/CWInterface.cs \
 	CoreWlan/CWKeychain.cs \
 
+# DeviceDiscoveryUI
+
+DEVICEDISCOVERYUI_SOURCES = \
+	DeviceDiscoveryUI/DDDevicePickerViewController.cs \
+
 # EventKit
 
 EVENTKIT_API_SOURCES = \
@@ -2318,6 +2323,7 @@ TVOS_FRAMEWORKS =           \
 	CoreLocation            \
 	CoreSpotlight			\
 	CoreText                \
+	DeviceDiscoveryUI		\
 	ExternalAccessory       \
 	GLKit                   \
 	GameController          \

src/rsp/dotnet/tvos-defines-dotnet.rsp

@@ -27,6 +27,7 @@
 -d:HAS_CORETEXT
 -d:HAS_COREVIDEO
 -d:HAS_DEVICECHECK
+-d:HAS_DEVICEDISCOVERYUI
 -d:HAS_EXTERNALACCESSORY
 -d:HAS_FOUNDATION
 -d:HAS_GAMECONTROLLER

src/rsp/tvos-defines.rsp

@@ -28,6 +28,7 @@
 -d:HAS_CORETEXT
 -d:HAS_COREVIDEO
 -d:HAS_DEVICECHECK
+-d:HAS_DEVICEDISCOVERYUI
 -d:HAS_EXTERNALACCESSORY
 -d:HAS_FOUNDATION
 -d:HAS_GAMECONTROLLER

tests/cecil-tests/Documentation.KnownFailures.txt

@@ -17555,6 +17555,7 @@ F:ObjCRuntime.Constants.CoreVideoLibrary
 F:ObjCRuntime.Constants.CoreWlanLibrary
 F:ObjCRuntime.Constants.CryptoTokenKitLibrary
 F:ObjCRuntime.Constants.DeviceCheckLibrary
+F:ObjCRuntime.Constants.DeviceDiscoveryUILibrary
 F:ObjCRuntime.Constants.EventKitLibrary
 F:ObjCRuntime.Constants.EventKitUILibrary
 F:ObjCRuntime.Constants.ExecutionPolicyLibrary
@@ -60018,6 +60019,14 @@ M:DeviceCheck.DCDeviceGenerateTokenCompletionHandler.BeginInvoke(Foundation.NSDa
 M:DeviceCheck.DCDeviceGenerateTokenCompletionHandler.EndInvoke(System.IAsyncResult)
 M:DeviceCheck.DCDeviceGenerateTokenCompletionHandler.Invoke(Foundation.NSData,Foundation.NSError)
 M:DeviceCheck.DCErrorExtensions.GetDomain(DeviceCheck.DCError)
+M:DeviceDiscoveryUI.DDDevicePickerViewController.#ctor(Foundation.NSCoder)
+M:DeviceDiscoveryUI.DDDevicePickerViewController.#ctor(Foundation.NSObjectFlag)
+M:DeviceDiscoveryUI.DDDevicePickerViewController.#ctor(ObjCRuntime.NativeHandle)
+M:DeviceDiscoveryUI.DDDevicePickerViewController.DevicePickerCompletionHandler.#ctor(System.Object,System.IntPtr)
+M:DeviceDiscoveryUI.DDDevicePickerViewController.DevicePickerCompletionHandler.BeginInvoke(Network.NWEndpoint,Network.NWError,System.AsyncCallback,System.Object)
+M:DeviceDiscoveryUI.DDDevicePickerViewController.DevicePickerCompletionHandler.EndInvoke(System.IAsyncResult)
+M:DeviceDiscoveryUI.DDDevicePickerViewController.DevicePickerCompletionHandler.Invoke(Network.NWEndpoint,Network.NWError)
+M:DeviceDiscoveryUI.DDDevicePickerViewController.get_ClassHandle
 M:EventKit.EKAlarm.#ctor(Foundation.NSObjectFlag)
 M:EventKit.EKAlarm.#ctor(ObjCRuntime.NativeHandle)
 M:EventKit.EKAlarm.get_ClassHandle
@@ -127615,6 +127624,7 @@ P:DeviceCheck.DCAppAttestService.Supported
 P:DeviceCheck.DCDevice.ClassHandle
 P:DeviceCheck.DCDevice.CurrentDevice
 P:DeviceCheck.DCDevice.Supported
+P:DeviceDiscoveryUI.DDDevicePickerViewController.ClassHandle
 P:EventKit.EKAlarm.AbsoluteDate
 P:EventKit.EKAlarm.ClassHandle
 P:EventKit.EKAlarm.EmailAddress

tests/introspection/ApiSelectorTest.cs

@@ -1242,6 +1242,8 @@ namespace Introspection {
 			// CloudKit
 			case "initWithExcludedZoneIDs:":
 			case "initWithZoneIDs:":
+			// DDDevicePickerViewController
+			case "initWithBrowseDescriptor:parameters:":
 				return true;
 			default:
 				return false;

tests/monotouch-test/DeviceDiscoveryUI/DDDevicePickerViewControllerTest.cs

@@ -0,0 +1,86 @@
+//
+// Unit tests for DDDevicePickerViewController
+//
+// Authors:
+//	Israel Soto <issoto@microsoft.com>
+//
+// Copyright 2022 Microsoft Corporation.
+//
+
+#if __TVOS__
+
+using System;
+using DeviceDiscoveryUI;
+using Foundation;
+using ObjCRuntime;
+using Network;
+using NUnit.Framework;
+using Xamarin.Utils;
+
+namespace MonoTouchFixtures.DeviceDiscoveryUI {
+	
+	[TestFixture]
+	[Preserve (AllMembers = true)]
+	public class DDDevicePickerViewControllerTest {
+		
+		const string serviceName = "MyAppService";
+
+		[OneTimeSetUp]
+		public void Init () => TestRuntime.AssertXcodeVersion (14, 0);
+
+		[Test]
+		public void IsSupportedTest ()
+		{
+			var browserDescriptor = NWBrowserDescriptor.CreateApplicationServiceName (serviceName);
+			var parameters = NWParameters.CreateApplicationService ();
+			var isSupported = DDDevicePickerViewController.IsSupported (browserDescriptor, parameters);
+			
+			// DDDevicePickerViewController seems to work only for devices
+			if (TestRuntime.IsSimulator)
+				Assert.IsFalse (isSupported, "IsSupported");
+			else
+				Assert.IsTrue (isSupported, "IsSupported");
+		}
+
+		[Test]
+		public void InitWithBrowseDescriptorAndParametersTest ()
+		{
+			// DDDevicePickerViewController seems to work only for devices
+			TestRuntime.AssertNotSimulator ();
+
+			var browserDescriptor = NWBrowserDescriptor.CreateApplicationServiceName (serviceName);
+			var parameters = NWParameters.CreateApplicationService ();
+			var isSupported = DDDevicePickerViewController.IsSupported (browserDescriptor, parameters);
+			
+			// If this fails, please, double check that MyAppService is registered within the Info.plist
+			// https://developer.apple.com/documentation/bundleresources/information_property_list/nsapplicationservices
+			Assert.IsTrue (isSupported, $"The {serviceName} key might not be registered in the Info.plist.");
+
+			Assert.DoesNotThrow (() => { var devicePicker = new DDDevicePickerViewController (browserDescriptor, parameters); },
+				"InitWithBrowseDescriptorAndParameters");
+		}
+
+		[Test]
+		public void SetDevicePickerTest ()
+		{
+			// DDDevicePickerViewController seems to work only for devices
+			TestRuntime.AssertNotSimulator ();
+
+			var browserDescriptor = NWBrowserDescriptor.CreateApplicationServiceName (serviceName);
+			var parameters = NWParameters.CreateApplicationService ();
+			var isSupported = DDDevicePickerViewController.IsSupported (browserDescriptor, parameters);
+			
+			// If this fails, please, double check that MyAppService is registered within the Info.plist
+			// https://developer.apple.com/documentation/bundleresources/information_property_list/nsapplicationservices
+			Assert.IsTrue (isSupported, $"The {serviceName} key might not be registered in the Info.plist.");
+			
+			Assert.DoesNotThrow (() => {
+				var devicePicker = new DDDevicePickerViewController (browserDescriptor, parameters);
+				devicePicker.SetDevicePicker ((endpoint, error) => { });
+			},
+			"SetDevicePicker");
+		}
+	}
+}
+
+#endif // __TVOS__

tests/monotouch-test/Info.plist

@@ -62,5 +62,22 @@
 	<array>
 		<string>processing</string>
 	</array>
+	<key>NSApplicationServices</key>
+	<dict>
+		<key>Browses</key>
+		<array>
+			<dict>
+				<key>NSApplicationServiceIdentifier</key>
+				<string>MyAppService</string>
+				<key>NSApplicationServicePlatformSupport</key>
+				<array>
+					<string>iPadOS</string>
+					<string>iOS</string>
+				</array>
+				<key>NSApplicationServiceUsageDescription</key>
+				<string>You can control this app using an iOS device.</string>
+			</dict>
+		</array>
+	</dict>
 </dict>
 </plist>

tests/monotouch-test/monotouch-test.csproj

@@ -247,6 +247,7 @@
     <Folder Include="NearbyInteraction\" />
     <Folder Include="MetricKit\" />
     <Folder Include="SharedWithYouCore\" />
+    <Folder Include="DeviceDiscoveryUI\" />
   </ItemGroup>
   <ItemGroup>
     <Content Include="AudioToolbox\1.caf" />

tests/xtro-sharpie/api-annotations-dotnet/tvOS-DeviceDiscoveryUI.todo

@@ -1,4 +0,0 @@
-!missing-selector! +DDDevicePickerViewController::isSupportedForBrowseDescriptor:parameters: not bound
-!missing-selector! DDDevicePickerViewController::initWithBrowseDescriptor:parameters: not bound
-!missing-selector! DDDevicePickerViewController::setDevicePickerCompletionHandler: not bound
-!missing-type! DDDevicePickerViewController not bound

tests/xtro-sharpie/tvOS-DeviceDiscoveryUI.todo

@@ -1,4 +0,0 @@
-!missing-selector! +DDDevicePickerViewController::isSupportedForBrowseDescriptor:parameters: not bound
-!missing-selector! DDDevicePickerViewController::initWithBrowseDescriptor:parameters: not bound
-!missing-selector! DDDevicePickerViewController::setDevicePickerCompletionHandler: not bound
-!missing-type! DDDevicePickerViewController not bound

tools/common/Frameworks.cs

@@ -643,6 +643,7 @@ public class Frameworks : Dictionary<string, Framework> {
 #if !NET
 					{ "Chip", "CHIP", new Version (15, 0), NotAvailableInSimulator /* no headers in beta 2 */ },
 #endif
+					{ "DeviceDiscoveryUI", "DeviceDiscoveryUI", 16,0 },
 					{ "OSLog", "OSLog", 15,0 },
 					{ "CoreMidi", "CoreMIDI", 15,0 },
 					{ "ShazamKit", "ShazamKit", new Version (15, 0), NotAvailableInSimulator},