Expose AutomationOption Setter for ChildSite

change/react-native-windows-cdc988c8-8058-4f35-a668-0fc97bf4f9a8.json

@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Expose AutomationOption Setter for ChildSite",
+  "packageName": "react-native-windows",
+  "email": "66076509+vineethkuttan@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}

vnext/Microsoft.ReactNative/Fabric/Composition/ContentIslandComponentView.cpp

@@ -212,13 +212,17 @@ void ContentIslandComponentView::prepareForRecycle() noexcept {
 }
 
 void ContentIslandComponentView::ConfigureChildSiteLinkAutomation() noexcept {
-  // Use FrameworkBased to let the XamlIsland manage its own framework-level accessibility tree
-  // and raise focus events naturally. This tells the system that the child island has its own
-  // framework (WinUI/XAML) that manages automation.
-  m_childSiteLink.AutomationOption(winrt::Microsoft::UI::Content::ContentAutomationOptions::FrameworkBased);
+  // Determine the automation option to use:
+  // 1. If explicitly set via builder, use that
+  // 2. Otherwise, default to FrameworkBased
+  winrt::Microsoft::UI::Content::ContentAutomationOptions automationOption =
+      winrt::Microsoft::UI::Content::ContentAutomationOptions::FrameworkBased;
+  if (m_builder && m_builder->ContentIslandChildSiteAutomationOption().has_value()) {
+    automationOption = m_builder->ContentIslandChildSiteAutomationOption().value();
+  }
+
+  m_childSiteLink.AutomationOption(automationOption);
 
-  // When using FrameworkBased mode, we don't register automation callbacks - let the XamlIsland handle its own UIA
-  // tree.
   if (m_innerAutomationProvider) {
     m_innerAutomationProvider->SetChildSiteLink(m_childSiteLink);
   }

vnext/Microsoft.ReactNative/Fabric/Composition/ReactCompositionViewComponentBuilder.cpp

@@ -113,6 +113,16 @@ void ReactCompositionViewComponentBuilder::SetContentIslandComponentViewInitiali
   };
 }
 
+void ReactCompositionViewComponentBuilder::SetContentIslandChildSiteAutomationOption(
+    winrt::Microsoft::UI::Content::ContentAutomationOptions automationOption) noexcept {
+  m_contentIslandChildSiteAutomationOption = automationOption;
+}
+
+std::optional<winrt::Microsoft::UI::Content::ContentAutomationOptions>
+ReactCompositionViewComponentBuilder::ContentIslandChildSiteAutomationOption() const noexcept {
+  return m_contentIslandChildSiteAutomationOption;
+}
+
 void ReactCompositionViewComponentBuilder::SetPortalComponentViewInitializer(
     const PortalComponentViewInitializer &initializer) noexcept {
   m_fnCreateView = [initializer](

vnext/Microsoft.ReactNative/Fabric/Composition/ReactCompositionViewComponentBuilder.h

@@ -5,6 +5,7 @@
 #include <Fabric/AbiComponentDescriptor.h>
 #include <react/renderer/componentregistry/ComponentDescriptorProvider.h>
 #include <react/renderer/core/ReactPrimitives.h>
+#include <optional>
 #include "winrt/Microsoft.ReactNative.Composition.Experimental.h"
 #include "winrt/Microsoft.ReactNative.Composition.h"
 #include "winrt/Microsoft.ReactNative.h"
@@ -46,6 +47,8 @@ struct ReactCompositionViewComponentBuilder
  public: // Composition::IReactCompositionViewComponentBuilder
   void SetViewComponentViewInitializer(const ViewComponentViewInitializer &initializer) noexcept;
   void SetContentIslandComponentViewInitializer(const ComponentIslandComponentViewInitializer &initializer) noexcept;
+  void SetContentIslandChildSiteAutomationOption(
+      winrt::Microsoft::UI::Content::ContentAutomationOptions automationOption) noexcept;
   void SetPortalComponentViewInitializer(const PortalComponentViewInitializer &initializer) noexcept;
   void SetCreateVisualHandler(CreateVisualDelegate impl) noexcept;
   void SetViewFeatures(ComponentViewFeatures viewFeatures) noexcept;
@@ -81,6 +84,8 @@ struct ReactCompositionViewComponentBuilder
   const winrt::Microsoft::ReactNative::Composition::Experimental::IVisualToMountChildrenIntoDelegate &
   VisualToMountChildrenIntoHandler() const noexcept;
   const CreateAutomationPeerDelegate &CreateAutomationPeerHandler() const noexcept;
+  std::optional<winrt::Microsoft::UI::Content::ContentAutomationOptions> ContentIslandChildSiteAutomationOption()
+      const noexcept;
 
  private:
   void InitializeComponentView(const winrt::Microsoft::ReactNative::ComponentView &view) noexcept;
@@ -114,6 +119,7 @@ struct ReactCompositionViewComponentBuilder
       m_visualToMountChildrenIntoHandler;
   UpdateLayoutMetricsDelegate m_updateLayoutMetricsHandler;
   bool m_xamlSupport{false};
+  std::optional<winrt::Microsoft::UI::Content::ContentAutomationOptions> m_contentIslandChildSiteAutomationOption;
 };
 
 } // namespace winrt::Microsoft::ReactNative::Composition

vnext/Microsoft.ReactNative/IReactCompositionViewComponentBuilder.idl

@@ -21,6 +21,7 @@ namespace Microsoft.ReactNative.Composition
   [experimental]
   delegate void ComponentIslandComponentViewInitializer(ContentIslandComponentView view);
 
+
   [webhosthidden]
   [experimental]
   delegate void PortalComponentViewInitializer(PortalComponentView view);
@@ -68,6 +69,7 @@ namespace Microsoft.ReactNative.Composition
   {
     void SetViewComponentViewInitializer(ViewComponentViewInitializer initializer);
     void SetContentIslandComponentViewInitializer(ComponentIslandComponentViewInitializer initializer);
+    void SetContentIslandChildSiteAutomationOption(Microsoft.UI.Content.ContentAutomationOptions automationOption);
     void SetPortalComponentViewInitializer(PortalComponentViewInitializer initializer);
     void SetCreateVisualHandler(CreateVisualDelegate impl);
     void SetViewFeatures(ComponentViewFeatures viewFeatures);