Hide selection handles from semantics (#76641)

* Hide selection handles from semantics

* update comment

packages/flutter/lib/src/widgets/text_selection.dart

@@ -547,13 +547,17 @@ class TextSelectionOverlay {
   }
 
   Widget _buildHandle(BuildContext context, _TextSelectionHandlePosition position) {
+    Widget handle;
     if ((_selection.isCollapsed && position == _TextSelectionHandlePosition.end) ||
          selectionControls == null)
-      return Container(); // hide the second handle when collapsed
-    return Visibility(
+      handle = Container(); // hide the second handle when collapsed
+    else {
+      handle = Visibility(
         visible: handlesVisible,
         child: _TextSelectionHandleOverlay(
-        onSelectionHandleChanged: (TextSelection newSelection) { _handleSelectionHandleChanged(newSelection, position); },
+          onSelectionHandleChanged: (TextSelection newSelection) {
+            _handleSelectionHandleChanged(newSelection, position);
+          },
           onSelectionHandleTapped: onSelectionHandleTapped,
           startHandleLayerLink: startHandleLayerLink,
           endHandleLayerLink: endHandleLayerLink,
@@ -562,7 +566,12 @@ class TextSelectionOverlay {
           selectionControls: selectionControls,
           position: position,
           dragStartBehavior: dragStartBehavior,
-    ));
+        )
+      );
+    }
+    return ExcludeSemantics(
+      child: handle,
+    );
   }
 
   Widget _buildToolbar(BuildContext context) {

packages/flutter/test/material/text_field_test.dart

@@ -1119,6 +1119,47 @@ void main() {
     expect(fadeFinder, findsNothing);
   });
 
+  testWidgets('selection handles are excluded from the semantics', (WidgetTester tester) async {
+    final SemanticsTester semantics = SemanticsTester(tester);
+    final TextEditingController controller = TextEditingController();
+
+    await tester.pumpWidget(
+      overlay(
+        child: TextField(
+          controller: controller,
+        ),
+      ),
+    );
+
+    const String testValue = 'abcdefghi';
+    await tester.enterText(find.byType(TextField), testValue);
+    expect(controller.value.text, testValue);
+    await skipPastScrollingAnimation(tester);
+    // Tap on the text field to show the handle.
+    await tester.tap(find.byType(TextField));
+    await tester.pumpAndSettle();
+    // The semantics should only have the text field.
+    expect(semantics, hasSemantics(
+      TestSemantics.root(
+        children: <TestSemantics>[
+          TestSemantics(
+            id: 1,
+            flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.isFocused],
+            actions: <SemanticsAction>[SemanticsAction.tap,
+              SemanticsAction.moveCursorBackwardByCharacter, SemanticsAction.setSelection, SemanticsAction.paste,
+              SemanticsAction.moveCursorBackwardByWord],
+            value: 'abcdefghi',
+            textDirection: TextDirection.ltr,
+            textSelection: const TextSelection.collapsed(offset: 9),
+          ),
+        ],
+      ),
+      ignoreRect: true,
+      ignoreTransform: true,
+    ));
+    semantics.dispose();
+  });
+
   testWidgets('Mouse long press is just like a tap', (WidgetTester tester) async {
     final TextEditingController controller = TextEditingController();