[NET10] Make IPlatformMeasureInvalidationController public

src/Core/src/Platform/iOS/IPlatformMeasureInvalidationController.cs

@@ -1,7 +1,20 @@
 namespace Microsoft.Maui.Platform;
 
-internal interface IPlatformMeasureInvalidationController
+/// <summary>
+/// Provides platform-specific measure invalidation control for iOS views.
+/// </summary>
+public interface IPlatformMeasureInvalidationController
 {
+	/// <summary>
+	/// Schedules measure invalidation to occur when the view is moved to a window.
+	/// This is used to handle scenarios where invalidation is attempted before the view is attached to a window.
+	/// </summary>
 	void InvalidateAncestorsMeasuresWhenMovedToWindow();
+
+	/// <summary>
+	/// Invalidates the current view via SetNeedsLayout and returns whether to continue propagating the invalidation to ancestors or not.
+	/// </summary>
+	/// <param name="isPropagating">True if this invalidation is being propagated from a descendant view, false if this is the initial view that triggered the invalidation.</param>
+	/// <returns>True to continue propagating invalidation to ancestor views, false to stop propagation.</returns>
 	bool InvalidateMeasure(bool isPropagating = false);
 }

src/Core/src/PublicAPI/net-ios/PublicAPI.Unshipped.txt

@@ -1,4 +1,8 @@
-#nullable enable
+#nullable enable
+Microsoft.Maui.Platform.IPlatformMeasureInvalidationController
+Microsoft.Maui.Platform.IPlatformMeasureInvalidationController.InvalidateAncestorsMeasuresWhenMovedToWindow() -> void
+Microsoft.Maui.Platform.IPlatformMeasureInvalidationController.InvalidateMeasure(bool isPropagating = false) -> bool
+virtual Microsoft.Maui.Animations.Lerp.LerpDelegate.Invoke(object! start, object! end, double progress) -> object!
 Microsoft.Maui.Converters.SafeAreaEdgesTypeConverter
 Microsoft.Maui.Converters.SafeAreaEdgesTypeConverter.SafeAreaEdgesTypeConverter() -> void
 Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate.ContextFlyoutItemHandlerUpdate(Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate! original) -> void
@@ -223,7 +227,6 @@ static Microsoft.Maui.SwipeViewSwipeEnded.operator !=(Microsoft.Maui.SwipeViewSw
 static Microsoft.Maui.SwipeViewSwipeEnded.operator ==(Microsoft.Maui.SwipeViewSwipeEnded? left, Microsoft.Maui.SwipeViewSwipeEnded? right) -> bool
 static Microsoft.Maui.SwipeViewSwipeStarted.operator !=(Microsoft.Maui.SwipeViewSwipeStarted? left, Microsoft.Maui.SwipeViewSwipeStarted? right) -> bool
 static Microsoft.Maui.SwipeViewSwipeStarted.operator ==(Microsoft.Maui.SwipeViewSwipeStarted? left, Microsoft.Maui.SwipeViewSwipeStarted? right) -> bool
-virtual Microsoft.Maui.Animations.Lerp.LerpDelegate.Invoke(object! start, object! end, double progress) -> object!
 virtual Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate.<Clone>$() -> Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate!
 virtual Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate.EqualityContract.get -> System.Type!
 virtual Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate.Equals(Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate? other) -> bool

src/Core/src/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt

@@ -1,4 +1,8 @@
-#nullable enable
+#nullable enable
+Microsoft.Maui.Platform.IPlatformMeasureInvalidationController
+Microsoft.Maui.Platform.IPlatformMeasureInvalidationController.InvalidateAncestorsMeasuresWhenMovedToWindow() -> void
+Microsoft.Maui.Platform.IPlatformMeasureInvalidationController.InvalidateMeasure(bool isPropagating = false) -> bool
+virtual Microsoft.Maui.Animations.Lerp.LerpDelegate.Invoke(object! start, object! end, double progress) -> object!
 Microsoft.Maui.Converters.SafeAreaEdgesTypeConverter
 Microsoft.Maui.Converters.SafeAreaEdgesTypeConverter.SafeAreaEdgesTypeConverter() -> void
 Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate.ContextFlyoutItemHandlerUpdate(Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate! original) -> void
@@ -226,7 +230,6 @@ static Microsoft.Maui.SwipeViewSwipeEnded.operator !=(Microsoft.Maui.SwipeViewSw
 static Microsoft.Maui.SwipeViewSwipeEnded.operator ==(Microsoft.Maui.SwipeViewSwipeEnded? left, Microsoft.Maui.SwipeViewSwipeEnded? right) -> bool
 static Microsoft.Maui.SwipeViewSwipeStarted.operator !=(Microsoft.Maui.SwipeViewSwipeStarted? left, Microsoft.Maui.SwipeViewSwipeStarted? right) -> bool
 static Microsoft.Maui.SwipeViewSwipeStarted.operator ==(Microsoft.Maui.SwipeViewSwipeStarted? left, Microsoft.Maui.SwipeViewSwipeStarted? right) -> bool
-virtual Microsoft.Maui.Animations.Lerp.LerpDelegate.Invoke(object! start, object! end, double progress) -> object!
 virtual Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate.<Clone>$() -> Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate!
 virtual Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate.EqualityContract.get -> System.Type!
 virtual Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate.Equals(Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate? other) -> bool

src/Core/tests/UnitTests/Platform/IPlatformMeasureInvalidationControllerTests.cs

@@ -0,0 +1,78 @@
+using System;
+using Xunit;
+
+#if IOS
+using Microsoft.Maui.Platform;
+
+namespace Microsoft.Maui.UnitTests.Platform
+{
+	public class IPlatformMeasureInvalidationControllerTests
+	{
+		[Fact]
+		public void InterfaceCanBeImplemented()
+		{
+			// Verify that the interface is public and can be implemented by external code
+			var implementation = new TestPlatformMeasureInvalidationController();
+
+			Assert.NotNull(implementation);
+			Assert.True(implementation is IPlatformMeasureInvalidationController);
+		}
+
+		[Fact]
+		public void InvalidateMeasureMethod_CanBeCalledWithDefaultParameter()
+		{
+			var implementation = new TestPlatformMeasureInvalidationController();
+
+			// Should be able to call with default parameter (isPropagating = false)
+			bool result = implementation.InvalidateMeasure();
+
+			Assert.True(result); // Default implementation returns true
+		}
+
+		[Fact]
+		public void InvalidateMeasureMethod_CanBeCalledWithExplicitParameter()
+		{
+			var implementation = new TestPlatformMeasureInvalidationController();
+
+			// Should be able to call with explicit parameter
+			bool result1 = implementation.InvalidateMeasure(isPropagating: false);
+			bool result2 = implementation.InvalidateMeasure(isPropagating: true);
+
+			Assert.True(result1);
+			Assert.False(result2); // Test implementation returns false when propagating
+		}
+
+		[Fact]
+		public void InvalidateAncestorsMeasuresWhenMovedToWindowMethod_CanBeCalled()
+		{
+			var implementation = new TestPlatformMeasureInvalidationController();
+
+			// Should be able to call without exceptions
+			implementation.InvalidateAncestorsMeasuresWhenMovedToWindow();
+
+			Assert.True(implementation.WasInvalidateAncestorsCalled);
+		}
+
+		/// <summary>
+		/// Test implementation of IPlatformMeasureInvalidationController for testing purposes.
+		/// Demonstrates how external customers can implement the interface to control propagation.
+		/// </summary>
+		private class TestPlatformMeasureInvalidationController : IPlatformMeasureInvalidationController
+		{
+			public bool WasInvalidateAncestorsCalled { get; private set; }
+
+			public void InvalidateAncestorsMeasuresWhenMovedToWindow()
+			{
+				WasInvalidateAncestorsCalled = true;
+			}
+
+			public bool InvalidateMeasure(bool isPropagating = false)
+			{
+				// Return false when propagating to test stopping propagation scenario
+				// This demonstrates how customers can control propagation behavior
+				return !isPropagating;
+			}
+		}
+	}
+}
+#endif