Fix for TapGestureRecognizer ButtonMask always return 0 (#30372)

* Fix for TapGesture ButtonMask

* Added TestCase

* Update Testcase

* Modified Testcase

Author: HarishwaranVijayakumar

src/Controls/src/Core/TapGestureRecognizer.cs

@@ -59,7 +59,7 @@ internal void SendTapped(View sender, Func<IElement?, Point?>? getPosition = nul
 			if (cmd != null && cmd.CanExecute(CommandParameter))
 				cmd.Execute(CommandParameter);
 
-			Tapped?.Invoke(sender, new TappedEventArgs(CommandParameter, getPosition));
+			Tapped?.Invoke(sender, new TappedEventArgs(CommandParameter, getPosition, Buttons));
 		}
 
 	}

src/Controls/src/Core/TappedEventArgs.cs

@@ -14,9 +14,10 @@ public TappedEventArgs(object? parameter)
 			Parameter = parameter;
 		}
 
-		internal TappedEventArgs(object? parameter, Func<IElement?, Point?>? getPosition) : this(parameter)
+		internal TappedEventArgs(object? parameter, Func<IElement?, Point?>? getPosition, ButtonsMask buttons) : this(parameter)
 		{
 			_getPosition = getPosition;
+			Buttons = buttons;
 		}
 
 		/// <include file="../../docs/Microsoft.Maui.Controls/TappedEventArgs.xml" path="//Member[@MemberName='Parameter']/Docs/*" />

src/Controls/tests/TestCases.HostApp/Issues/Issue24734.cs

@@ -0,0 +1,37 @@
+namespace Maui.Controls.Sample.Issues;
+
+[Issue(IssueTracker.Github, 24734, "TapGestureRecognizer ButtonMask always return 0", PlatformAffected.All)]
+public class Issue24734 : ContentPage
+{
+	public Issue24734()
+	{
+		VerticalStackLayout stackLayout = new VerticalStackLayout
+		{
+			Spacing = 20,
+			Padding = new Thickness(20)
+		};
+
+		Label label = new Label
+		{
+			Text = "Failure",
+			AutomationId = "LabelwithGesture",
+		};
+
+		TapGestureRecognizer tapGestureRecognizer = new TapGestureRecognizer
+		{
+			Buttons = ButtonsMask.Primary
+		};
+
+		tapGestureRecognizer.Tapped += (sender, e) =>
+		{
+			if (e.Buttons == ButtonsMask.Primary)
+			{
+				label.Text = "Success";
+			}
+		};
+
+		label.GestureRecognizers.Add(tapGestureRecognizer);
+		stackLayout.Add(label);
+		Content = stackLayout;
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue24734.cs

@@ -0,0 +1,23 @@
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+public class Issue24734 : _IssuesUITest
+{
+    public Issue24734(TestDevice device) : base(device)
+    {
+    }
+
+    public override string Issue => "TapGestureRecognizer ButtonMask always return 0";
+
+    [Test]
+    [Category(UITestCategories.Gestures)]
+    public void ButtonMaskShouldNotReturnZero()
+    {
+        App.WaitForElement("LabelwithGesture");
+        App.Tap("LabelwithGesture");
+        App.WaitForElement("Success");
+    }
+}