[a11y] Add isEnabled semantics flag to text field (#143334)

Add a semantics flag to   text field to fix https://github.com/flutter/flutter/issues/143337 (in IOS the disabled text field is not read `dimmed`)

internal: b/322345393

packages/flutter/lib/src/material/text_field.dart

@@ -1574,6 +1574,7 @@ class _TextFieldState extends State<TextField> with RestorationMixin implements
             animation: controller, // changes the _currentLength
             builder: (BuildContext context, Widget? child) {
               return Semantics(
+                enabled: _isEnabled,
                 maxValueLength: semanticsMaxValueLength,
                 currentValueLength: _currentLength,
                 onTap: widget.readOnly ? null : () {

packages/flutter/test/cupertino/text_field_test.dart

@@ -529,8 +529,11 @@ void main() {
                     children: <TestSemantics>[
                       TestSemantics(
                         id: 4,
-                        flags: <SemanticsFlag>[SemanticsFlag.isTextField,
-                          SemanticsFlag.hasEnabledState, SemanticsFlag.isEnabled,],
+                        flags: <SemanticsFlag>[
+                          SemanticsFlag.isTextField,
+                          SemanticsFlag.hasEnabledState,
+                          SemanticsFlag.isEnabled,
+                        ],
                         actions: <SemanticsAction>[SemanticsAction.tap,
                           SemanticsAction.didGainAccessibilityFocus,],
                         textDirection: TextDirection.ltr,

packages/flutter/test/material/input_date_picker_form_field_test.dart

@@ -279,6 +279,8 @@ void main() {
       expect(tester.getSemantics(find.byType(EditableText)), matchesSemantics(
         label: 'Enter Date',
         isTextField: true,
+        hasEnabledState: true,
+        isEnabled: true,
         isFocused: true,
         value: '01/15/2016',
         hasTapAction: true,

packages/flutter/test/material/search_test.dart

@@ -670,6 +670,8 @@ void main() {
                                 id: 9,
                                 flags: <SemanticsFlag>[
                                   SemanticsFlag.isTextField,
+                                  SemanticsFlag.hasEnabledState,
+                                  SemanticsFlag.isEnabled,
                                   SemanticsFlag.isFocused,
                                   SemanticsFlag.isHeader,
                                   if (debugDefaultTargetPlatformOverride != TargetPlatform.iOS &&
@@ -818,6 +820,8 @@ void main() {
                             id: 11,
                             flags: <SemanticsFlag>[
                               SemanticsFlag.isTextField,
+                              SemanticsFlag.hasEnabledState,
+                              SemanticsFlag.isEnabled,
                               SemanticsFlag.isFocused,
                               SemanticsFlag.isHeader,
                               if (debugDefaultTargetPlatformOverride != TargetPlatform.iOS &&

packages/flutter/test/material/text_field_test.dart

@@ -746,7 +746,7 @@ void main() {
                     children: <TestSemantics>[
                       TestSemantics(
                         id: 4,
-                        flags: <SemanticsFlag>[SemanticsFlag.isTextField],
+                        flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.hasEnabledState, SemanticsFlag.isEnabled],
                         actions: <SemanticsAction>[
                           SemanticsAction.tap,
                           SemanticsAction.didGainAccessibilityFocus,
@@ -1856,7 +1856,12 @@ void main() {
         children: <TestSemantics>[
           TestSemantics(
             id: 1,
-            flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.isFocused],
+            flags: <SemanticsFlag>[
+              SemanticsFlag.isTextField,
+              SemanticsFlag.hasEnabledState,
+              SemanticsFlag.isEnabled,
+              SemanticsFlag.isFocused,
+            ],
             actions: <SemanticsAction>[
               SemanticsAction.tap,
               SemanticsAction.moveCursorBackwardByCharacter,
@@ -5189,6 +5194,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
           ],
         ),
         TestSemantics.rootChild(
@@ -6530,7 +6537,7 @@ void main() {
         ),
     );
 
-    expect(semantics, includesNodeWith(flags: <SemanticsFlag>[SemanticsFlag.isTextField]));
+    expect(semantics, includesNodeWith(flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.hasEnabledState, SemanticsFlag.isEnabled]));
 
     semantics.dispose();
   });
@@ -6944,7 +6951,7 @@ void main() {
     );
 
     expect(semantics, includesNodeWith(
-      flags: <SemanticsFlag>[SemanticsFlag.isTextField],
+      flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.hasEnabledState, SemanticsFlag.isEnabled],
       maxValueLength: 10,
       currentValueLength: 0,
     ));
@@ -6959,7 +6966,12 @@ void main() {
     await tester.pump();
 
     expect(semantics, includesNodeWith(
-      flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.isFocused],
+      flags: <SemanticsFlag>[
+        SemanticsFlag.isTextField,
+        SemanticsFlag.hasEnabledState,
+        SemanticsFlag.isEnabled,
+        SemanticsFlag.isFocused,
+      ],
       maxValueLength: 10,
       currentValueLength: 3,
     ));
@@ -6985,7 +6997,12 @@ void main() {
 
     expect(
       semantics,
-      includesNodeWith(flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.isReadOnly]),
+      includesNodeWith(flags: <SemanticsFlag>[
+        SemanticsFlag.isTextField,
+        SemanticsFlag.hasEnabledState,
+        SemanticsFlag.isEnabled,
+        SemanticsFlag.isReadOnly,
+      ]),
     );
 
     semantics.dispose();
@@ -8050,6 +8067,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
           ],
         ),
       ],
@@ -8069,6 +8088,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
           ],
         ),
       ],
@@ -8094,6 +8115,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
             SemanticsFlag.isFocused,
           ],
         ),
@@ -8122,6 +8145,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
             SemanticsFlag.isFocused,
           ],
         ),
@@ -8149,6 +8174,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
             SemanticsFlag.isFocused,
           ],
         ),
@@ -8174,6 +8201,8 @@ void main() {
           textDirection: TextDirection.ltr,
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
           ],
           value: 'Hello',
         )
@@ -8189,6 +8218,8 @@ void main() {
         textDirection: TextDirection.ltr,
         flags: <SemanticsFlag>[
           SemanticsFlag.isTextField,
+          SemanticsFlag.hasEnabledState,
+          SemanticsFlag.isEnabled,
           SemanticsFlag.isObscured,
         ],
       )
@@ -8204,6 +8235,8 @@ void main() {
           textDirection: TextDirection.ltr,
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
           ],
           value: 'Hello',
         )
@@ -8246,6 +8279,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
             SemanticsFlag.isFocused,
           ],
         ),
@@ -8281,6 +8316,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
           ],
         ),
       ],
@@ -8307,6 +8344,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
             SemanticsFlag.isFocused,
           ],
         ),
@@ -8337,6 +8376,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
             SemanticsFlag.isFocused,
           ],
         ),
@@ -8386,6 +8427,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
             SemanticsFlag.isFocused,
           ],
         ),
@@ -8434,6 +8477,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
             SemanticsFlag.isFocused,
           ],
         ),
@@ -8470,7 +8515,7 @@ void main() {
         children: <TestSemantics>[
           TestSemantics(
             id: inputFieldId,
-            flags: <SemanticsFlag>[SemanticsFlag.isTextField],
+            flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.hasEnabledState, SemanticsFlag.isEnabled],
             actions: <SemanticsAction>[SemanticsAction.tap],
             value: textInTextField,
             textDirection: TextDirection.ltr,
@@ -8490,6 +8535,8 @@ void main() {
             id: inputFieldId,
             flags: <SemanticsFlag>[
               SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
               SemanticsFlag.isFocused,
             ],
             actions: <SemanticsAction>[
@@ -8543,7 +8590,7 @@ void main() {
         children: <TestSemantics>[
           TestSemantics(
             id: inputFieldId,
-            flags: <SemanticsFlag>[SemanticsFlag.isTextField],
+            flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.hasEnabledState, SemanticsFlag.isEnabled],
             actions: <SemanticsAction>[SemanticsAction.tap],
             value: textInTextField,
             textDirection: TextDirection.ltr,
@@ -8563,6 +8610,8 @@ void main() {
             id: inputFieldId,
             flags: <SemanticsFlag>[
               SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
               SemanticsFlag.isFocused,
             ],
             actions: <SemanticsAction>[
@@ -8743,6 +8792,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
           ],
           children: <TestSemantics>[
             TestSemantics(
@@ -8778,6 +8829,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
             SemanticsFlag.isFocused,
           ],
           children: <TestSemantics>[
@@ -8835,6 +8888,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
           ],
           children: <TestSemantics>[
             TestSemantics(
@@ -8882,6 +8937,8 @@ void main() {
           ],
           flags: <SemanticsFlag>[
             SemanticsFlag.isTextField,
+            SemanticsFlag.hasEnabledState,
+            SemanticsFlag.isEnabled,
           ],
           children: <TestSemantics>[
             TestSemantics(

packages/flutter/test/material/time_picker_test.dart

@@ -1343,7 +1343,12 @@ void main() {
             label: 'Hour',
             value: '07',
             actions: <SemanticsAction>[SemanticsAction.tap],
-            flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.isMultiline],
+            flags: <SemanticsFlag>[
+              SemanticsFlag.isTextField,
+              SemanticsFlag.hasEnabledState,
+              SemanticsFlag.isEnabled,
+              SemanticsFlag.isMultiline,
+            ],
           ),
         );
         expect(
@@ -1352,7 +1357,12 @@ void main() {
             label: 'Minute',
             value: '00',
             actions: <SemanticsAction>[SemanticsAction.tap],
-            flags: <SemanticsFlag>[SemanticsFlag.isTextField, SemanticsFlag.isMultiline],
+            flags: <SemanticsFlag>[
+              SemanticsFlag.isTextField,
+              SemanticsFlag.hasEnabledState,
+              SemanticsFlag.isEnabled,
+              SemanticsFlag.isMultiline,
+            ],
           ),
         );
 

packages/flutter_test/test/controller_test.dart

@@ -883,6 +883,7 @@ void main() {
     group('simulatedTraversal', () {
       final List<Matcher> fullTraversalMatchers = <Matcher>[
         containsSemantics(isHeader: true, label: 'Semantics Test'),
+        containsSemantics(label: 'Text Field'),
         containsSemantics(isTextField: true),
         containsSemantics(label: 'Off Switch'),
         containsSemantics(hasToggledState: true),
@@ -913,7 +914,7 @@ void main() {
         await tester.pumpWidget(const MaterialApp(home: _SemanticsTestWidget()));
 
         // We're expecting the traversal to start where the slider is.
-        final List<Matcher> expectedMatchers = <Matcher>[...fullTraversalMatchers]..removeRange(0, 8);
+        final List<Matcher> expectedMatchers = <Matcher>[...fullTraversalMatchers]..removeRange(0, 9);
 
         expect(
           tester.semantics.simulatedAccessibilityTraversal(start: find.byType(Slider)),
@@ -935,7 +936,7 @@ void main() {
         await tester.pumpWidget(const MaterialApp(home: _SemanticsTestWidget()));
 
         // We're expecting the traversal to end where the slider is, inclusive.
-        final Iterable<Matcher> expectedMatchers = <Matcher>[...fullTraversalMatchers].getRange(0, 9);
+        final Iterable<Matcher> expectedMatchers = <Matcher>[...fullTraversalMatchers].getRange(0, 10);
 
         expect(
           tester.semantics.simulatedAccessibilityTraversal(end: find.byType(Slider)),
@@ -957,7 +958,7 @@ void main() {
         await tester.pumpWidget(const MaterialApp(home: _SemanticsTestWidget()));
 
         // We're expecting the traversal to start at the text field and end at the slider.
-        final Iterable<Matcher> expectedMatchers = <Matcher>[...fullTraversalMatchers].getRange(1, 9);
+        final Iterable<Matcher> expectedMatchers = <Matcher>[...fullTraversalMatchers].getRange(1, 10);
 
         expect(
           tester.semantics.simulatedAccessibilityTraversal(
@@ -1661,7 +1662,7 @@ class _SemanticsTestWidget extends StatelessWidget {
         child: Column(
           children: <Widget>[
             const _SemanticsTestCard(
-              label: 'TextField',
+              label: 'Text Field',
               widget: TextField(),
             ),
             _SemanticsTestCard(