Ensure island on automation provider (#15414)

* Assert on text input focus when no UIA tool running

* Change files

Author: acoates-ms

change/react-native-windows-763b73f1-84ea-4ce3-8af0-f0257bd2e7f4.json

@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "Assert on text input focus when no UIA tool running",
+  "packageName": "react-native-windows",
+  "email": "[email protected]",
+  "dependentChangeType": "patch"
+}

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

@@ -966,12 +966,17 @@ void CompositionEventHandler::getTargetPointerArgs(
     assert(m_pointerCapturingComponentTag != -1);
     tag = m_pointerCapturingComponentTag;
 
-    auto targetComponentView = fabricuiManager->GetViewRegistry().componentViewDescriptorWithTag(tag).view;
-    auto clientRect = winrt::get_self<winrt::Microsoft::ReactNative::implementation::ComponentView>(targetComponentView)
-                          ->getClientRect();
-    if (auto strongRootView = m_wkRootView.get()) {
-      ptLocal.x = ptScaled.x - (clientRect.left / strongRootView.ScaleFactor());
-      ptLocal.y = ptScaled.y - (clientRect.top / strongRootView.ScaleFactor());
+    auto targetComponentView = fabricuiManager->GetViewRegistry().findComponentViewWithTag(tag);
+    if (targetComponentView) {
+      auto clientRect =
+          winrt::get_self<winrt::Microsoft::ReactNative::implementation::ComponentView>(targetComponentView)
+              ->getClientRect();
+      if (auto strongRootView = m_wkRootView.get()) {
+        ptLocal.x = ptScaled.x - (clientRect.left / strongRootView.ScaleFactor());
+        ptLocal.y = ptScaled.y - (clientRect.top / strongRootView.ScaleFactor());
+      }
+    } else {
+      tag = -1;
     }
   } else {
     tag = RootComponentView().hitTest(ptScaled, ptLocal);

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

@@ -374,13 +374,12 @@ winrt::IInspectable ReactNativeIsland::GetUiaProvider() noexcept {
   if (m_uiaProvider == nullptr) {
     m_uiaProvider =
         winrt::make<winrt::Microsoft::ReactNative::implementation::CompositionRootAutomationProvider>(*this);
-    if (m_hwnd && !m_island) {
-      auto pRootProvider =
-          static_cast<winrt::Microsoft::ReactNative::implementation::CompositionRootAutomationProvider *>(
-              m_uiaProvider.as<IRawElementProviderSimple>().get());
-      if (pRootProvider != nullptr) {
-        pRootProvider->SetHwnd(m_hwnd);
-      }
+    auto pRootProvider =
+        static_cast<winrt::Microsoft::ReactNative::implementation::CompositionRootAutomationProvider *>(
+            m_uiaProvider.as<IRawElementProviderSimple>().get());
+    if (pRootProvider != nullptr) {
+      pRootProvider->SetIsland(m_island);
+      pRootProvider->SetHwnd(m_hwnd);
     }
   }
   return m_uiaProvider;
@@ -868,9 +867,6 @@ winrt::Microsoft::UI::Content::ContentIsland ReactNativeIsland::Island() {
             auto pRootProvider =
                 static_cast<winrt::Microsoft::ReactNative::implementation::CompositionRootAutomationProvider *>(
                     provider.as<IRawElementProviderSimple>().get());
-            if (pRootProvider != nullptr) {
-              pRootProvider->SetIsland(pThis->m_island);
-            }
             args.AutomationProvider(std::move(provider));
             args.Handled(true);
           }