Add IsInitialized to IElementHandler

src/Core/src/Handlers/Element/ElementHandler.cs

@@ -32,7 +32,7 @@ protected ElementHandler(IPropertyMapper mapper, CommandMapper? commandMapper =
 
 		public IElement? VirtualView { get; private protected set; }
 
-		internal bool _isPlatformViewNew;
+		bool IsInitialized { get; set; }
 
 		public virtual void SetMauiContext(IMauiContext mauiContext) =>
 			MauiContext = mauiContext;
@@ -58,7 +58,7 @@ public virtual void SetVirtualView(IElement view)
 				isNew = true;
 			}
 
-			_isPlatformViewNew = isNew;
+			IsInitialized = isNew;
 
 			if (VirtualView.Handler != this)
 			{
@@ -91,7 +91,7 @@ public virtual void SetVirtualView(IElement view)
 
 			_mapper.UpdateProperties(this, VirtualView);
 
-			_isPlatformViewNew = false;
+			IsInitialized = false;
 		}
 
 		public virtual void UpdateValue(string property)

src/Core/src/Handlers/IElementHandler.cs

@@ -46,6 +46,15 @@ public interface IElementHandler
 		/// </summary>  
 		IElement? VirtualView { get; }
 
+		/// <summary>
+		/// Gets if the platform view was initialized for the first time or not.
+		/// </summary>
+#if NETSTANDARD2_0
+		bool IsInitialized { get; }
+#else
+		bool IsInitialized => false;
+#endif
+
 		/// <summary>  
 		/// Gets the .NET MAUI context associated with the element.  
 		/// </summary>  

src/Core/src/Platform/Windows/TransformationExtensions.cs

@@ -19,7 +19,7 @@ public static void UpdateTransformation(this FrameworkElement frameworkElement,
 			if (rotationX % 360 == 0 && rotationY % 360 == 0 && rotation % 360 == 0 &&
 				translationX == 0 && translationY == 0 && scaleX == 1 && scaleY == 1)
 			{
-				bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false;
+				bool? skipInitialization = view.Handler?.IsInitialized ?? false;
 
 				if (skipInitialization != true)
 				{

src/Core/src/Platform/Windows/ViewExtensions.cs

@@ -41,7 +41,7 @@ public static void Unfocus(this FrameworkElement platformView, IView view)
 
 		public static void UpdateVisibility(this FrameworkElement platformView, IView view)
 		{
-			bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false
+			bool skipInitialization = (view.Handler?.IsInitialized ?? false)
 				|| !(view.Visibility == Visibility.Visible && view.Opacity == 1.0);
 
 			if (skipInitialization != true)
@@ -99,7 +99,7 @@ public static void UpdateBorder(this FrameworkElement platformView, IView view)
 		public static void UpdateOpacity(this FrameworkElement platformView, IView view)
 		{
 			var opacity = view.Visibility == Visibility.Hidden ? 0 : view.Opacity;
-			bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false
+			bool skipInitialization = (view.Handler?.IsInitialized ?? false) 
 				|| opacity != 1;
 
 			if (skipInitialization != true)
@@ -131,7 +131,7 @@ public static void UpdateBackground(this FrameworkElement platformView, IView vi
 
 		public static void UpdateFlowDirection(this FrameworkElement platformView, IView view)
 		{
-			bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false
+			bool skipInitialization = (view.Handler?.IsInitialized ?? false)
 				|| view.FlowDirection != FlowDirection.MatchParent;
 
 			if (skipInitialization != true)
@@ -154,7 +154,7 @@ public static void UpdateFlowDirection(this FrameworkElement platformView, IView
 
 		public static void UpdateAutomationId(this FrameworkElement platformView, IView view)
 		{
-			bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false
+			bool skipInitialization = (view.Handler?.IsInitialized ?? false)
 				|| view.AutomationId is not null;
 
 			if (skipInitialization != true)
@@ -202,7 +202,7 @@ public static void InvalidateMeasure(this FrameworkElement platformView, IView v
 
 		public static void UpdateWidth(this FrameworkElement platformView, IView view)
 		{
-			bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false
+			bool skipInitialization = (view.Handler?.IsInitialized ?? false)
 				|| !double.IsNaN(view.Width);
 
 			if (skipInitialization != true) 
@@ -215,7 +215,7 @@ public static void UpdateWidth(this FrameworkElement platformView, IView view)
 
 		public static void UpdateHeight(this FrameworkElement platformView, IView view)
 		{
-			bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false
+			bool skipInitialization = (view.Handler?.IsInitialized ?? false)
 				|| !double.IsNaN(view.Height);
 
 			if (skipInitialization != true)
@@ -246,7 +246,7 @@ public static void UpdateMinimumWidth(this FrameworkElement platformView, IView
 		{
 			var minWidth = view.MinimumWidth;
 
-			bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false
+			bool skipInitialization = (view.Handler?.IsInitialized ?? false)
 				|| Dimension.IsMinimumSet(minWidth);
 
 			if (skipInitialization != true)
@@ -263,7 +263,7 @@ public static void UpdateMinimumWidth(this FrameworkElement platformView, IView
 
 		public static void UpdateMaximumHeight(this FrameworkElement platformView, IView view)
 		{
-			bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false
+			bool skipInitialization = (view.Handler?.IsInitialized ?? false)
 				|| !Dimension.IsMaximumSet(view.MaximumHeight);
 
 			if (skipInitialization != true)
@@ -274,7 +274,7 @@ public static void UpdateMaximumHeight(this FrameworkElement platformView, IView
 
 		public static void UpdateMaximumWidth(this FrameworkElement platformView, IView view)
 		{
-			bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false
+			bool skipInitialization = (view.Handler?.IsInitialized ?? false)
 				|| !Dimension.IsMaximumSet(view.MaximumWidth);
 
 			if (skipInitialization != true) 
@@ -466,7 +466,7 @@ internal static void UnfocusControl(Control control)
 
 		public static void UpdateInputTransparent(this FrameworkElement nativeView, IViewHandler handler, IView view)
 		{
-			bool? skipInitialization = (view.Handler as ElementHandler)?._isPlatformViewNew ?? false
+			bool skipInitialization = (view.Handler?.IsInitialized ?? false)
 				|| !view.InputTransparent;
 
 			if (skipInitialization != true) 

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

@@ -1 +1,2 @@
 #nullable enable
+Microsoft.Maui.IElementHandler.IsInitialized.get -> bool

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

@@ -1,3 +1,4 @@
 #nullable enable
+Microsoft.Maui.IElementHandler.IsInitialized.get -> bool
 override Microsoft.Maui.Platform.MauiCALayer.AddAnimation(CoreAnimation.CAAnimation! animation, string? key) -> void
 *REMOVED*override Microsoft.Maui.Handlers.BorderHandler.ConnectHandler(Microsoft.Maui.Platform.ContentView! platformView) -> void

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

@@ -1,3 +1,4 @@
 #nullable enable
+Microsoft.Maui.IElementHandler.IsInitialized.get -> bool
 override Microsoft.Maui.Platform.MauiCALayer.AddAnimation(CoreAnimation.CAAnimation! animation, string? key) -> void
 *REMOVED*override Microsoft.Maui.Handlers.BorderHandler.ConnectHandler(Microsoft.Maui.Platform.ContentView! platformView) -> void

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

@@ -1 +1,2 @@
 #nullable enable
+Microsoft.Maui.IElementHandler.IsInitialized.get -> bool

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

@@ -1 +1,2 @@
 #nullable enable
+Microsoft.Maui.IElementHandler.IsInitialized.get -> bool

src/Core/src/PublicAPI/netstandard/PublicAPI.Unshipped.txt

@@ -1 +1,2 @@
 #nullable enable
+Microsoft.Maui.IElementHandler.IsInitialized.get -> bool

src/Core/src/PublicAPI/netstandard2.0/PublicAPI.Unshipped.txt

@@ -1 +1,2 @@
 #nullable enable
+Microsoft.Maui.IElementHandler.IsInitialized.get -> bool