[Fabric] Fix OnSelectionChanged running multiple times (#12903)

* remove extra method calls

* add check for call coming from state

* Change files

* update snapshot

Author: TatianaKapos

change/react-native-windows-09eae7c8-ee31-4e09-b868-5f7bdb68a8a2.json

@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "fix OnSelectionChanged running multiple times",
+  "packageName": "react-native-windows",
+  "email": "[email protected]",
+  "dependentChangeType": "patch"
+}

packages/e2e-test-app-fabric/test/__snapshots__/LegacyTextInputTest.test.ts.snap

@@ -104,9 +104,7 @@ onKeyPress key: c
 onChange text: ab
 onSelectionChange range: 2,2
 onKeyPress key: b
-onSelectionChange range: 1,1
 onChange text: a
-onSelectionChange range: 0,0
 onChange text: a
 onSelectionChange range: 1,1
 onKeyPress key: a
@@ -125,7 +123,7 @@ onFocus
     "Opacity": 1,
     "Size": [
       998,
-      858,
+      820,
     ],
     "Visual Type": "SpriteVisual",
   },
@@ -147,9 +145,7 @@ onKeyPress key: c
 onChange text: ab
 onSelectionChange range: 2,2
 onKeyPress key: b
-onSelectionChange range: 1,1
 onChange text: a
-onSelectionChange range: 0,0
 onChange text: a
 onSelectionChange range: 1,1
 onKeyPress key: a
@@ -168,7 +164,7 @@ onFocus
     "Opacity": 1,
     "Size": [
       998,
-      299,
+      262,
     ],
     "Visual Type": "SpriteVisual",
   },
@@ -213,9 +209,7 @@ onKeyPress key: c
 onChange text: ab
 onSelectionChange range: 2,2
 onKeyPress key: b
-onSelectionChange range: 1,1
 onChange text: a
-onSelectionChange range: 0,0
 onChange text: a
 onSelectionChange range: 1,1
 onKeyPress key: a
@@ -234,7 +228,7 @@ onFocus
     "Opacity": 1,
     "Size": [
       998,
-      727,
+      690,
     ],
     "Visual Type": "SpriteVisual",
   },

vnext/Microsoft.ReactNative/Fabric/Composition/TextInput/WindowsTextInputComponentView.cpp

@@ -1113,8 +1113,6 @@ void WindowsTextInputComponentView::updateState(
     return;
   }
 
-  auto data = m_state->getData();
-
   if (!oldState) {
     m_mostRecentEventCount = m_state->getData().mostRecentEventCount;
   }
@@ -1123,19 +1121,11 @@ void WindowsTextInputComponentView::updateState(
     m_comingFromState = true;
     // Only handle single/empty fragments right now -- ignore the other fragments
 
-    LRESULT res;
-    CHARRANGE cr;
-    cr.cpMin = cr.cpMax = 0;
-    winrt::check_hresult(m_textServices->TxSendMessage(EM_EXGETSEL, 0, reinterpret_cast<LPARAM>(&cr), &res));
-
     UpdateText(
         m_state->getData().attributedString.getFragments().size()
             ? m_state->getData().attributedString.getFragments()[0].string
             : "");
 
-    winrt::check_hresult(
-        m_textServices->TxSendMessage(EM_SETSEL, static_cast<WPARAM>(cr.cpMin), static_cast<LPARAM>(cr.cpMax), &res));
-
     m_comingFromState = false;
   }
 }
@@ -1154,7 +1144,8 @@ void WindowsTextInputComponentView::UpdateText(const std::string &str) noexcept
   winrt::check_hresult(m_textServices->TxSendMessage(
       EM_SETTEXTEX, reinterpret_cast<WPARAM>(&stt), reinterpret_cast<LPARAM>(str.c_str()), &res));
 
-  winrt::check_hresult(m_textServices->TxSendMessage(EM_EXGETSEL, 0, reinterpret_cast<LPARAM>(&cr), &res));
+  winrt::check_hresult(
+      m_textServices->TxSendMessage(EM_SETSEL, static_cast<WPARAM>(cr.cpMin), static_cast<LPARAM>(cr.cpMax), &res));
 
   // enable colored emojis
   winrt::check_hresult(
@@ -1225,7 +1216,7 @@ void WindowsTextInputComponentView::OnTextUpdated() noexcept {
 }
 
 void WindowsTextInputComponentView::OnSelectionChanged(LONG start, LONG end) noexcept {
-  if (m_eventEmitter /* && !m_comingFromJS ?? */) {
+  if (m_eventEmitter && !m_comingFromState /* && !m_comingFromJS ?? */) {
     auto emitter = std::static_pointer_cast<const facebook::react::WindowsTextInputEventEmitter>(m_eventEmitter);
     facebook::react::WindowsTextInputEventEmitter::OnSelectionChange onSelectionChangeArgs;
     onSelectionChangeArgs.selection.start = start;