fix: Propagate focus properties from Flyout to Popup host

src/SamplesApp/SamplesApp.UITests/UnoSamples_Tests.Keyboard.cs

@@ -390,6 +390,7 @@ public void TextBox_BeforeTextChanging()
 
 		[Test]
 		[AutoRetry]
+		[ActivePlatforms(Platform.iOS, Platform.Browser)] // Android is disabled https://github.com/unoplatform/uno/issues/1630
 		public void TextBox_Disable()
 		{
 			Run("UITests.Shared.Windows_UI_Xaml_Controls.TextBoxTests.TextBox_Disabled");

src/Uno.UI/UI/Xaml/Controls/Flyout/FlyoutBase.cs

@@ -56,7 +56,7 @@ private void EnsurePopupCreated()
 					IsLightDismissEnabled = _isLightDismissEnabled,
 				};
 
-				SynchronizeTemplatedParent();
+				SynchronizePropertyToPopup(Popup.TemplatedParentProperty, TemplatedParent);
 
 				_popup.Opened += OnPopupOpened;
 				_popup.Closed += OnPopupClosed;
@@ -66,7 +66,9 @@ private void EnsurePopupCreated()
 
 				InitializePopupPanel();
 
-				SynchronizeDataContext();
+				SynchronizePropertyToPopup(Popup.DataContextProperty, DataContext);
+				SynchronizePropertyToPopup(Popup.AllowFocusOnInteractionProperty, AllowFocusOnInteraction);
+				SynchronizePropertyToPopup(Popup.AllowFocusWhenDisabledProperty, AllowFocusWhenDisabled);
 			}
 		}
 
@@ -178,9 +180,12 @@ public bool AllowFocusWhenDisabled
 		/// <summary>
 		/// Identifies the AllowFocusWhenDisabled  dependency property.
 		/// </summary>
-		[GeneratedDependencyProperty(DefaultValue = false, Options = FrameworkPropertyMetadataOptions.Inherits)]
+		[GeneratedDependencyProperty(DefaultValue = false, Options = FrameworkPropertyMetadataOptions.Inherits, ChangedCallback = true)]
 		public static DependencyProperty AllowFocusWhenDisabledProperty { get; } = CreateAllowFocusWhenDisabledProperty();
 
+		private void OnAllowFocusWhenDisabledChanged(bool oldValue, bool newValue) =>
+			SynchronizePropertyToPopup(Popup.AllowFocusWhenDisabledProperty, AllowFocusWhenDisabled);
+
 		/// <summary>
 		/// Gets or sets a value that indicates whether the element automatically gets focus when the user interacts with it.
 		/// </summary>
@@ -193,9 +198,12 @@ public bool AllowFocusOnInteraction
 		/// <summary>
 		/// Identifies for the AllowFocusOnInteraction dependency property.
 		/// </summary>
-		[GeneratedDependencyProperty(DefaultValue = true, Options = FrameworkPropertyMetadataOptions.Inherits)]
+		[GeneratedDependencyProperty(DefaultValue = true, Options = FrameworkPropertyMetadataOptions.Inherits, ChangedCallback = true)]
 		public static DependencyProperty AllowFocusOnInteractionProperty { get; } = CreateAllowFocusOnInteractionProperty();
 
+		private void OnAllowFocusOnInteractionChanged(bool oldValue, bool newValue) =>
+			SynchronizePropertyToPopup(Popup.AllowFocusOnInteractionProperty, AllowFocusOnInteraction);
+
 		public FrameworkElement Target { get; private set; }
 
 		internal FlyoutShowOptions ShowOptions => _showOptions;
@@ -322,23 +330,19 @@ protected internal virtual void Open()
 
 		partial void SetPopupPositionPartial(UIElement placementTarget, Point? positionInTarget);
 
-		partial void OnDataContextChangedPartial(DependencyPropertyChangedEventArgs e)
-		{
-			SynchronizeDataContext();
-		}
+		partial void OnDataContextChangedPartial(DependencyPropertyChangedEventArgs e) =>
+			SynchronizePropertyToPopup(Popup.DataContextProperty, DataContext);
 
-		private void SynchronizeDataContext() =>
-			// This is present to force the dataContext to be passed to the popup of the flyout since it is not directly a child in the visual tree of the flyout.
-			_popup?.SetValue(Popup.DataContextProperty, this.DataContext, precedence: DependencyPropertyValuePrecedences.Local);
-
-		partial void OnTemplatedParentChangedPartial(DependencyPropertyChangedEventArgs e)
-			=> SynchronizeTemplatedParent();
-
-		private void SynchronizeTemplatedParent()
+		private void SynchronizePropertyToPopup(DependencyProperty property, object value)
 		{
-			_popup?.SetValue(Popup.TemplatedParentProperty, TemplatedParent, precedence: DependencyPropertyValuePrecedences.Local);
+			// This is present to force properties to be propagated to the popup of the flyout
+			// since it is not directly a child in the visual tree of the flyout.
+			_popup?.SetValue(property, value, precedence: DependencyPropertyValuePrecedences.Local);
 		}
 
+		partial void OnTemplatedParentChangedPartial(DependencyPropertyChangedEventArgs e) =>
+			SynchronizePropertyToPopup(Popup.TemplatedParentProperty, TemplatedParent);
+
 		public static FlyoutBase GetAttachedFlyout(FrameworkElement element)
 		{
 			return (FlyoutBase)element.GetValue(AttachedFlyoutProperty);