feat(DisplayRequest): WASM support

src/Uno.UI.Wasm/ts/Windows/System/Display/DisplayRequest.ts

@@ -0,0 +1,33 @@
+interface Navigator {
+	wakeLock : WakeLock;
+}
+
+enum WakeLockType { "screen" };
+
+interface WakeLock {
+	request(type: WakeLockType): Promise<WakeLockSentinel>;
+};
+
+interface WakeLockSentinel {    
+	release(): Promise<void>;	
+};
+
+namespace Windows.System.Display {
+
+	export class DisplayRequest {
+		private static activeScreenLockPromise: Promise<WakeLockSentinel>;
+
+		public static activateScreenLock() {
+			if (navigator.wakeLock) {
+				DisplayRequest.activeScreenLockPromise = navigator.wakeLock.request(WakeLockType.screen);
+			}
+		}
+
+		public static deactivateScreenLock() {
+			if (DisplayRequest.activeScreenLockPromise) {
+				DisplayRequest.activeScreenLockPromise.then(sentinel => sentinel.release());
+				DisplayRequest.activeScreenLockPromise = null;
+			}
+		}
+	}
+}

src/Uno.UWP/Generated/3.0.0.0/Windows.System.Display/DisplayRequest.cs

@@ -2,27 +2,27 @@
 #pragma warning disable 114 // new keyword hiding
 namespace Windows.System.Display
 {
-	#if false || false || NET461 || __WASM__ || false
+	#if false || false || NET461 || false || false
 	[global::Uno.NotImplemented]
 	#endif
 	public  partial class DisplayRequest 
 	{
-		#if false || false || NET461 || __WASM__ || false
+		#if false || false || NET461 || false || false
 		[global::Uno.NotImplemented]
 		public DisplayRequest() 
 		{
 			global::Windows.Foundation.Metadata.ApiInformation.TryRaiseNotImplemented("Windows.System.Display.DisplayRequest", "DisplayRequest.DisplayRequest()");
 		}
 		#endif
 		// Forced skipping of method Windows.System.Display.DisplayRequest.DisplayRequest()
-		#if false || false || NET461 || __WASM__ || false
+		#if false || false || NET461 || false || false
 		[global::Uno.NotImplemented]
 		public  void RequestActive()
 		{
 			global::Windows.Foundation.Metadata.ApiInformation.TryRaiseNotImplemented("Windows.System.Display.DisplayRequest", "void DisplayRequest.RequestActive()");
 		}
 		#endif
-		#if false || false || NET461 || __WASM__ || false
+		#if false || false || NET461 || false || false
 		[global::Uno.NotImplemented]
 		public  void RequestRelease()
 		{

src/Uno.UWP/System/Display/DisplayRequest.cs

@@ -1,4 +1,4 @@
-#if __ANDROID__ || __IOS__ || __MACOS__
+#if __ANDROID__ || __IOS__ || __MACOS__ || __WASM__
 using System;
 using System.Collections.Generic;
 using System.Text;

src/Uno.UWP/System/Display/DisplayRequest.wasm.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Uno.Foundation;
+
+namespace Windows.System.Display
+{
+    public partial class DisplayRequest
+    {
+		private const string JsType = "Windows.System.Display.DisplayRequest";
+
+		partial void ActivateScreenLock()
+		{
+			var command = $"{JsType}.activateScreenLock()";
+			WebAssemblyRuntime.InvokeJS(command);
+		}
+
+		partial void DeactivateScreenLock()
+		{
+			var command = $"{JsType}.deactivateScreenLock()";
+			WebAssemblyRuntime.InvokeJS(command);
+		}
+	}
+}