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auto-submit[bot]
ef29db350f
Reverts "Feat: Add a11y for loading indicators (#165173)" (#178316) 
<!-- start_original_pr_link -->
Reverts: flutter/flutter#165173
<!-- end_original_pr_link -->
<!-- start_initiating_author -->
Initiated by: chingjun
<!-- end_initiating_author -->
<!-- start_revert_reason -->
Reason for reverting: The PR did not finish "Google Testing", and
actually caused several failures in Google
<!-- end_revert_reason -->
<!-- start_original_pr_author -->
Original PR Author: rkishan516
<!-- end_original_pr_author -->

<!-- start_reviewers -->
Reviewed By: {chunhtai, flutter-zl}
<!-- end_reviewers -->

<!-- start_revert_body -->
This change reverts the following previous change:
Feat: Add a11y for loading indicators
fixes: #161631 

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.
<!-- end_revert_body -->

Co-authored-by: auto-submit[bot] <flutter-engprod-team@google.com>
 2025-11-11 19:04:20 +00:00
Kishan Rathore
2981516d74
Feat: Add a11y for loading indicators (#165173) 
Feat: Add a11y for loading indicators
fixes: #161631 

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.
 2025-11-11 06:17:40 +00:00
Qun Cheng
fccfa978a9
Reland "Refactor OverlayPortal semantics (#173005)" (#178095) 
Reverts flutter/flutter#178007

This PR is to reland https://github.com/flutter/flutter/pull/173005 and
add a fix to avoid infinite loop. The fix doesn't contain engine
changes.
 2025-11-11 00:35:40 +00:00
Lau Ching Jun
f066ed6591
Revert "Refactor OverlayPortal semantics (#173005)" (#178007) 
This reverts commit ccf6466b14e144971a7d65983bdd16459d65a62a.

~This is a test PR for investigation, the commit seems to be breaking a
customer app.~

The original PR caused b/457553134
 2025-11-06 03:41:26 +00:00
Hannah Jin
ed19f47bec
Add blockAccessibilityFocus flag (#175551) 
Add a new flag for a11y focusable

- Accessibility focus, which is the focus used by screen readers like
TalkBack and VoiceOver, is different from input focus.
- Our current logic use some existing flags to decide if a node is
accessibilty focusable. like "if it's a slider / has a check state / has
keyboard focus/..., then it's a11y focusable"
ecbb115ae3/engine/src/flutter/shell/platform/android/io/flutter/view/AccessibilityBridge.java (L98)
- but we lack the ability to explicitly set a node to be unfocusable in
a11y!
- This flag can be used to explicitly set some semantics nodes to be
unfocusable in a11y mode. if it is false, we fall back to the logic "if
it's a slider / has a check state / has keyboard focus/..., then it's
a11y focusable"

future use case 1:
user can set live region to be not focusable, so when content changes,
it will still announce, but the content can't be focused by swiping.
future use case 2:
when pushing a new route like a dialog, setting the semantics nodes in
old pages to be un focusable.




## Pre-launch Checklist

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 2025-11-03 22:18:33 +00:00
Qun Cheng
ccf6466b14
Refactor OverlayPortal semantics (#173005) 
Fixes https://github.com/flutter/flutter/issues/163576
Fixes https://github.com/flutter/flutter/issues/175184

This PR refactored the grafting part on `OverlayPortal`. Originally, the
semantics tree of `OverlayPortal` was constructed/grafted in render
object phase to make sure the correctness of the traversal order.
However this resulted wrong hit-test order and the issue surfaced on
web. With the fact that on web we are not able to graft/correct hit-test
order tree, this PR:
* Reverts the original grafting of the `OverlayPortal` so the hit-test
order is always correct.
* Then, we adds the grafting and updates the traversal order when we
send `childrenInTraversalOrder` to engine.
* Updating `childrenInTraversalOrder` causes it have different length
from the length of `childrenInHitTestOrder` and wrong hit-test transform
of the `OverlayPortal` children because when the transform is
calculated, it assumes a correct traversal order. To fix these issues,
this PR also:
  * recalculates the transform for `OverlayPortal` children.
  * adds `hitTestTransform` property and pass it to Android engine.
* skip grafting for web because it assumes the same length of
`childrenInTraversalOrder` and `childrenInHitTestOrder`.
* added grafting by using `ARIA-owns` in web engine to fix the traversal
order.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.
 2025-10-29 22:30:39 +00:00
chunhtai
a3eba8eab2
Reapply "Update the AccessibilityPlugin::Announce method to account f… (#176107) 
…… (#174365)"

This reverts commit 5e146d47a61098e5ed967352812bcbbe0fe24f20.

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straight reland, previous pr was reverted because g3fix is outdated

## Pre-launch Checklist

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 2025-10-01 22:34:09 +00:00
Kostia Sokolovskyi
c6ffbdf7ea
[a11y] Add expanded flag support to Android. (#174981) 
Closes https://github.com/flutter/flutter/issues/92040

- Adds `expanded` semantics flag support to Android
- Adds `onExpand` and `onCollapse` semantics actions
- Updates `robolectric` library
- Adds java and dart tests

#### Why were `onExpand` and `onCollapse` actions added?
It turned out that TalkBack doesn't announce the `expanded` state if
`expand/collapse` action is not set for the accessibility node.

#### Why was the `robolectric` library updated?

The `expanded` state support in Android was introduced in API 36. The
`roboelectric: 4.14.1` doesn't support API 36. To run tests for a newly
added functionality `roboelectric` library was updated to `4.16`, which
supports the latest Android version
(https://github.com/robolectric/robolectric/releases/tag/robolectric-4.16).

In case you think it would be better to update the `roboelectric` in a
separate PR, please let me know.

<br/>
<details>
<summary>Example Source Code</summary>

```dart

import 'package:flutter/material.dart';

void main() {
  runApp(const App());
}

class App extends StatefulWidget {
  const App({super.key});

  @override
  State<App> createState() => _AppState();
}

class _AppState extends State<App> {
  final _controller = ExpansibleController();

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          spacing: 24,
          children: [
            Text('Expansible Example'),
            ListenableBuilder(
              listenable: _controller,
              builder: (context, child) {
                return Semantics(
                  expanded: _controller.isExpanded,
                  onExpand: () {
                    print(' \n onExpand \n ');
                    _controller.expand();
                  },
                  onCollapse: () {
                    print(' \n onCollapse \n ');
                    _controller.collapse();
                  },
                  child: child,
                );
              },
              child: Expansible(
                headerBuilder: (context, _) => ListTile(
                  tileColor: Colors.blue.shade100,
                  leading: Text(
                    'Expansible',
                    style: TextStyle(fontSize: 20),
                  ),
                  trailing: Icon(
                    _controller.isExpanded
                        ? Icons.arrow_upward
                        : Icons.arrow_downward,
                    semanticLabel: _controller.isExpanded
                        ? 'Arrow Up icon'
                        : 'Arrow Down icon',
                  ),
                ),
                bodyBuilder: (context, _) {
                  return Container(
                    color: Colors.blue,
                    height: 200,
                    width: 200,
                  );
                },
                controller: _controller,
              ),
            ),
          ],
        ),
      ),
    );
  }
}
```

</details>



https://github.com/user-attachments/assets/256c4182-a1e3-44fc-b028-5e6c9ec05ad7



## Pre-launch Checklist

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we expect every widget to implement].
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- [X] I updated/added relevant documentation (doc comments with `///`).
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---------

Co-authored-by: ash2moon <muhatashim@google.com>
 2025-09-27 00:13:18 +00:00
auto-submit[bot]
5e146d47a6
Reverts "Reapply "Update the AccessibilityPlugin::Announce method to account f… (#174365)" (#176059) 
<!-- start_original_pr_link -->
Reverts: flutter/flutter#174365
<!-- end_original_pr_link -->
<!-- start_initiating_author -->
Initiated by: chunhtai
<!-- end_initiating_author -->
<!-- start_revert_reason -->
Reason for reverting: outdated g3fix
<!-- end_revert_reason -->
<!-- start_original_pr_author -->
Original PR Author: mattkae
<!-- end_original_pr_author -->

<!-- start_reviewers -->
Reviewed By: {chunhtai}
<!-- end_reviewers -->

<!-- start_revert_body -->
This change reverts the following previous change:
…o… (#174223)

This reverts commit 86327198ff0678f46cbdfb3e12f1759d03aa768d.

Reverts the revert: https://github.com/flutter/flutter/pull/174223

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
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above.
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[test-exempt].
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Fixes] where supported.
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<!-- end_revert_body -->

Co-authored-by: auto-submit[bot] <flutter-engprod-team@google.com>
 2025-09-25 22:37:49 +00:00
Matthew Kosarek
bf97b09609
Reapply "Update the AccessibilityPlugin::Announce method to account f… (#174365) 
…o… (#174223)

This reverts commit 86327198ff0678f46cbdfb3e12f1759d03aa768d.

Reverts the revert: https://github.com/flutter/flutter/pull/174223

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
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Fixes] where supported.
- [x] All existing and new tests are passing.
 2025-09-25 18:48:56 +00:00
Pedro Massango
00e428a200
fix(Semantics): Ensure semantics properties take priority over button's (#174473) 
Fixes https://github.com/flutter/flutter/issues/157689

Flutter packages PR counterpart:
- https://github.com/flutter/packages/pull/9815



## Pre-launch Checklist

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responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
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If you need help, consider asking for advice on the #hackers-new channel
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**Note**: The Flutter team is currently trialing the use of [Gemini Code
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 2025-09-04 21:05:27 +00:00
chunhtai
6c63866546
Ensures initial semantics state is sent to engine (#174845) 
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fixes https://github.com/flutter/flutter/issues/174842

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---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
 2025-09-02 21:57:37 +00:00
Hannah Jin
0b8f1b2943
Include SemanticsValidationResult in debugDumpSemanticsTree (#174677) 
follow up on issue: https://github.com/flutter/flutter/issues/173838

*Replace this paragraph with a description of what this PR is changing
or adding, and why. Consider including before/after screenshots.*

*List which issues are fixed by this PR. You must list at least one
issue. An issue is not required if the PR fixes something trivial like a
typo.*

*If you had to change anything in the [flutter/tests] repo, include a
link to the migration guide as per the [breaking change policy].*

## Pre-launch Checklist

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- [ ] I listed at least one issue that this PR fixes in the description
above.
- [ ] I updated/added relevant documentation (doc comments with `///`).
- [ ] I added new tests to check the change I am making, or this PR is
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chunhtai
03195e6990
Reapply "Add set semantics enabled API and wire iOS a11y bridge" (#174163) 
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Previous pr is reverted due to internal test failure

This is a straight reland, no change from previous. only need to migrate
internal code

fixes https://github.com/flutter/flutter/issues/158399

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 2025-08-29 19:29:12 +00:00
Hannah Jin
798ff5908e
Update some semantics flags updated to use enum (engine, framework, web) (#170696) 
issue: https://github.com/flutter/flutter/issues/166101,


new Updates :
Add new enum Tristate and CheckedState in  for 7 flags.
For CheckState, it used to use 3 bools (hasCheck, isChecked,
isCheckStateMixed) to represent check states, replace them with a
CheckState enum.
For other 6 flags, each has 2 bools (hasXXState and isXX), replace them
with a Tristate enum.

This will be a breaking changes to the SemanticsFlags class , which was
added in April in https://github.com/flutter/flutter/issues/166101 and
https://github.com/flutter/flutter/pull/167771 , will write a breaking
change doc for this PR




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chunhtai
86327198ff
Revert "Update the AccessibilityPlugin::Announce method to account fo… (#174223) 
…r the view (#172669)"

This reverts commit e131243b0043f4f9944632acc734ea171c6b4105.

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pr causes internal breakage

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 2025-08-21 16:52:46 +00:00
auto-submit[bot]
960d1078f8
Reverts "Reapply "Add set semantics enabled API and wire iOS a11y bridge (#161… (#171198)" (#174153) 
<!-- start_original_pr_link -->
Reverts: flutter/flutter#171198
<!-- end_original_pr_link -->
<!-- start_initiating_author -->
Initiated by: chunhtai
<!-- end_initiating_author -->
<!-- start_revert_reason -->
Reason for reverting: breaking internal tests
<!-- end_revert_reason -->
<!-- start_original_pr_author -->
Original PR Author: chunhtai
<!-- end_original_pr_author -->

<!-- start_reviewers -->
Reviewed By: {jmagman, mdebbar}
<!-- end_reviewers -->

<!-- start_revert_body -->
This change reverts the following previous change:
…265)"

This reverts commit cc04ca4e5594fe9cd87adde34a5eedf14221fc3b.

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fixes https://github.com/flutter/flutter/issues/158399

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<!-- end_revert_body -->

Co-authored-by: auto-submit[bot] <flutter-engprod-team@google.com>
 2025-08-20 19:43:47 +00:00
Matthew Kosarek
e131243b00
Update the AccessibilityPlugin::Announce method to account for the view (#172669) 
## What's new?
- The accessibility "announce" method now takes a `view_id`
- The `view_id` is used to lookup the corresponding `FlutterView` in the
win32 embedder
- Updated the associated tests

## Pre-launch Checklist

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[test-exempt].
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Fixes] where supported.
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---------

Co-authored-by: Loïc Sharma <737941+loic-sharma@users.noreply.github.com>
 2025-08-19 22:17:42 +00:00
chunhtai
3e4d171664
Reapply "Add set semantics enabled API and wire iOS a11y bridge (#161… (#171198) 
…265)"

This reverts commit cc04ca4e5594fe9cd87adde34a5eedf14221fc3b.

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fixes https://github.com/flutter/flutter/issues/158399

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 2025-08-19 17:33:07 +00:00
Hannah Jin
35375e43fb
[a11y] : set isFocused will update isFocusable to true (#170935) 
the isFocused and isFocusable flags should be more consistent,

this is also to prepare for
https://github.com/flutter/flutter/pull/170696 ,


So all EditableText and TextField widgets will have isFocusable flag set
to true now. (because they set isFocused).



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---------

Co-authored-by: chunhtai <47866232+chunhtai@users.noreply.github.com>
 2025-08-15 22:41:49 +00:00
zhongliugo
ac6211aece
Add SemanticsLabelBuilder for Accessible Label Concatenation (#171683) 
## Description

Please check comment:
https://github.com/flutter/flutter/pull/171040#issuecomment-3014250567.

This PR adds `SemanticsLabelBuilder`, a new utility class for creating
accessible concatenated labels with proper text direction handling and
spacing. Currently, developers manually concatenate semantic labels
using string interpolation, which is error-prone and leads to
accessibility issues like missing spaces, incorrect text direction for
RTL languages. The new builder provides automatic spacing, Unicode
bidirectional text embedding for mixed LTR/RTL content.

### Before (error-prone manual concatenation):
```dart
//  Missing space
String label = "$firstName$lastName";  // "JohnDoe"

String englishText = "Welcome";  
String arabicText = "مرحبا";     // Arabic "Hello"

// Manual Concatenation (WITHOUT Unicode embedding):
aria-label="Welcome 欢迎 مرحبا स्वागत है to our global app"
// Problem: Arabic does not have proper text direction handling
```

### After (automatic and accessible):

Demo app after the change: https://label-0702.web.app/

```dart
// Automatic spacing and text direction handling
final label = (SemanticsLabelBuilder()
  ..addPart(firstName)
  ..addPart(lastName)).build();
// Result: "John Doe" with proper aria-label generation

// SemanticsLabelBuilder (WITH Unicode embedding):
aria-label="Welcome 欢迎 [U+202B]مرحبا[U+202C] स्वागत है to our global app"
//  Result: Arabic has proper text direction handling
```

## Issues Fixed

This fixes https://github.com/flutter/flutter/issues/162094. 

This PR addresses the general accessibility problem of error-prone
manual label concatenation that affects screen reader users. While not
fixing a specific filed issue, it provides a robust solution for the
common pattern of building complex semantic labels that are critical for
accessibility compliance, particularly for multilingual applications and
complex UI components like contact cards, dashboards, and e-commerce
listings.

## Breaking Changes

No breaking changes were made. This is a purely additive API that
doesn't modify existing behavior or require any migration.

## Key Features Added

- **SemanticsLabelBuilder**: Main builder class for concatenating text
parts
- **Automatic spacing**: Configurable separators with intelligent empty
part handling
- **Text direction support**: Unicode bidirectional embedding for
RTL/LTR mixed content

## Example Usage

```dart
// Basic usage
final label = (SemanticsLabelBuilder()
  ..addPart('Contact')
  ..addPart('John Doe')
  ..addPart('Phone: +1-555-0123')).build();
// Result: "Contact John Doe Phone: +1-555-0123"

// Custom separator
final label = (SemanticsLabelBuilder(separator: ', ')
  ..addPart('Name: Alice')
  ..addPart('Status: Online')).build();
// Result: "Name: Alice, Status: Online"

// Multilingual support
final label = (SemanticsLabelBuilder(textDirection: TextDirection.ltr)
  ..addPart('Welcome', textDirection: TextDirection.ltr)
  ..addPart('مرحبا', textDirection: TextDirection.rtl)
  ..addPart('to our app')).build();
// Result: "Welcome ‫مرحبا‬ to our app" (with proper RTL embedding)
```
```

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
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- [x] All existing and new tests are passing.

---------

Co-authored-by: Mouad Debbar <mouad.debbar@gmail.com>
 2025-07-11 19:06:26 +00:00
Kate Lovett
a04fb324be
Bump Dart to 3.8 and reformat (#171703) 
Bumps the Dart version to 3.8 across the repo (excluding
engine/src/flutter/third_party) and applies formatting updates from Dart
3.8.

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 2025-07-07 17:58:32 +00:00
Hannah Jin
8edb61af1a
Add semantics role for form (#170709) 
fix: [#161628](https://github.com/flutter/flutter/issues/161628)
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Co-authored-by: chunhtai <47866232+chunhtai@users.noreply.github.com>
Co-authored-by: Mouad Debbar <mouad.debbar@gmail.com>
 2025-07-04 06:44:29 +00:00
chunhtai
2b6b9d1258
Adds semantics locale support for web (#171196) 
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toward https://github.com/flutter/flutter/issues/98948

This sets the ground work for framework and web

still need to implement:
1. Android and iOS support
2. set application locale.

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 2025-07-02 21:46:09 +00:00
ash2moon
c9537a5509
Add back "Use live region in error text input decorator for Android #165531" (#168992) 
Partly of https://github.com/flutter/flutter/issues/165510

⤴️ Parent PR: https://github.com/flutter/flutter/pull/169685 (✅ Merged)
⤴️ Parent PR (refactor): https://github.com/flutter/flutter/pull/170618
(✅ Merged)

Re-lands https://github.com/flutter/flutter/pull/165531
The PR was originally reverted due to an issue with an internal Google
test. I added a new test case under `input_decorator_test.dart` which
does something similar to prevent the regression. All other code is the
same as https://github.com/flutter/flutter/pull/165531.

The easiest way to review this would probably be to just check the [diff
after the first
commit](cb5647c393)
to see the changes I made. To check if the reland commit is the same, it
might be best to just [compare solely that
commit](9bd8d5689b)
against the [original
PR](https://github.com/flutter/flutter/pull/165531/files).

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 2025-06-25 19:12:23 +00:00
chunhtai
257411dcb7
Relax RadioGroup semantics to allow non-radio children (#170273) 
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as title, also adjust radio group semantics to form a semantics node.
This makes sure it won't merge up and end up taking other semantics node
sibling as its children

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 2025-06-12 21:26:00 +00:00
Hannah Jin
7769f98c33
[a11y] Semanctis flag refactor step 4: web and updateNode (#168852) 
issue: https://github.com/flutter/flutter/issues/166101, overall goal is
to update semantics flag to be a struct/class to support more than 32
flags.

step 1: https://github.com/flutter/flutter/pull/167421 Update
semantics_node.h and dart:ui
step 2: https://github.com/flutter/flutter/pull/167738 Update Embedder
part to use a struct instead of a int bit mask.
step 3: https://github.com/flutter/flutter/pull/167771 Update Framework
use the SemanticsFlags class instead of bitmask
step 4 (this PR) Update web engine to use the new class and update
SemanticsUpdateBuilder.updateNode to pass a list of bools instead of
bitmask

TODO:

flutter_tester
use the SemanticsFlags class instead of bitmask


[apicheck_test.dart](https://github.com/flutter/flutter/pull/167421/files#diff-69aefaacf1041f639974044962123bfae0756ce86032ac1f26256099425d7a5a)
Add this test back

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 2025-06-06 23:17:20 +00:00
Qun Cheng
39ce615530
Add landmark roles (#168931) 
This PR is to add ARIA landmark roles to `SemanticsRole`: complementary,
contentInfo, main, navigation and region.

I skipped `sectionhead` because it is an abstract role based on the [MDN
docs](https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Reference/Roles/sectionhead_role#:~:text=The%20structural%20sectionhead%20role%20is%20an%20abstract%20role%20for%20the%20subclass%20roles%20that%20identify%20the%20labels%20or%20summaries%20of%20the%20sections%20they%20label.%20The%20role%20must%20not%20be%20used.)
.

Fixes https://github.com/flutter/flutter/issues/162138

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 2025-06-06 21:51:08 +00:00
Koji Wakamiya
d064c95c10
[Web][Engine] Update MediaQuery in response to semanticsEnabled (#166836) 
fix https://github.com/flutter/flutter/issues/134980

Calling
`EnginePlatformDispatcher.instance.invokeOnAccessibilityFeaturesChanged();`
after `EnginePlatformDispatcher.instance.configuration =
newConfiguration` to notify update configuration event to `MediaQuery`.

before


https://github.com/user-attachments/assets/89969cc7-f9fa-4ac0-8ce0-d026d5676f27

after


https://github.com/user-attachments/assets/8a284d42-e344-4039-8569-8567956326b7

<details>

<summary>Example Code</summary>

```dart
import 'package:flutter/material.dart';
import 'package:flutter/semantics.dart';

void main() {
  runApp(const MaterialApp(home: MyHomePage()));
}

class MyHomePage extends StatelessWidget {
  const MyHomePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            ElevatedButton(
              onPressed: () {
                SemanticsBinding.instance.ensureSemantics();
              },
              child: const Text('Enable a11y'),
            ),
            const SizedBox(height: 24),
            ElevatedButton(
              onPressed: () {
                ScaffoldMessenger.of(context).showSnackBar(
                  SnackBar(
                    content: const Text('Should stay visible'),
                    action: SnackBarAction(label: 'Action', onPressed: () {}),
                  ),
                );
              },
              child: const Text('Show snackbar'),
            ),
            const SizedBox(height: 24),
            Text(
              'MediaQuery.accessibleNavigationOf(context): ${MediaQuery.accessibleNavigationOf(context)}',
            ),
            Text(
              'SemanticsBinding.instance.semanticsEnabled: ${SemanticsBinding.instance.semanticsEnabled}',
            ),
            Text(
              'SemanticsBinding.instance.platformDispatcher.semanticsEnabled: ${SemanticsBinding.instance.platformDispatcher.semanticsEnabled}',
            ),
            Text(
              'SemanticsBinding.instance.accessibilityFeatures: ${SemanticsBinding.instance.accessibilityFeatures}',
            ),
          ],
        ),
      ),
    );
  }
}
```

</details>

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---------

Co-authored-by: chunhtai <47866232+chunhtai@users.noreply.github.com>
Co-authored-by: Mouad Debbar <mouad.debbar@gmail.com>
 2025-06-02 13:58:26 +00:00
chunhtai
3c28bb7a24
Removes elevation and thickness from semantics r2 (#169382) 
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same as https://github.com/flutter/flutter/pull/168703, but previous pr
seems bugged github

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 2025-05-30 21:57:30 +00:00
chunhtai
8d2c9782e3
Fixes tab semantics gets dropped if the child produce a semantics node (#169233) 
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fixes https://github.com/flutter/flutter/issues/169175

the bug is due to the image widget will create it own semanitc node and
force the semantics widget in the stack to form its own node instead of
merge up. Modify the code so that it works correctly.

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 2025-05-22 21:06:03 +00:00
auto-submit[bot]
606bb06c0f
Reverts "Use live region in error text input decorator for Android (#165531)" (#168848) 
<!-- start_original_pr_link -->
Reverts: flutter/flutter#165531
<!-- end_original_pr_link -->
<!-- start_initiating_author -->
Initiated by: matanlurey
<!-- end_initiating_author -->
<!-- start_revert_reason -->
Reason for reverting: Breaks google client tests
<!-- end_revert_reason -->
<!-- start_original_pr_author -->
Original PR Author: ash2moon
<!-- end_original_pr_author -->

<!-- start_reviewers -->
Reviewed By: {chunhtai, reidbaker, hannah-hyj}
<!-- end_reviewers -->

<!-- start_revert_body -->
This change reverts the following previous change:
Resolves partly https://github.com/flutter/flutter/issues/165510


**Context:** This issue originates from
https://github.com/flutter/flutter/issues/99715, where it was reported
that `liveRegion` alone was insufficient for announcing form validation
errors. While `liveRegion` announces the first error encountered,
subsequent submissions with the same error message on Android would not
trigger a re-announcement.

**Original Solution:** Pull request
https://github.com/flutter/flutter/pull/123373 addressed this by
implementing the `announce` event to ensure error messages were
consistently announced, even for repeated submissions.

**Native Android Behavior (Jetpack Compose):** In native Android
development using Jetpack Compose, setting the `isError` property of a
`TextField` to `true` triggers Talkback to announce "Error invalid
input." This announcement occurs *only* on the initial change to the
error state. Subsequent errors, even if the `isError` property remains
`true`, are not re-announced. This behavior closely mirrors the
functionality of `liveRegion`, with the key difference being that
`liveRegion` also announces the specific error text, in addition to the
general error state. Testing in a native Jetpack Compose application
confirms this behavior and provides a valuable comparison point against
the current Flutter form example.

**Suggested Action:** **Fork** the behavior in
https://github.com/flutter/flutter/pull/123373. Reinstate the use of
`liveRegion` for error announcements within `widgets/Form` for Android
and keep other platforms the same.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
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we expect every widget to implement].
- [x] I signed the [CLA].
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above.
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- [x] I added new tests to check the change I am making, or this PR is
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- [x] All existing and new tests are passing.

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<!-- end_revert_body -->

Co-authored-by: auto-submit[bot] <flutter-engprod-team@google.com>
 2025-05-14 17:47:38 +00:00
Hannah Jin
30924e2d6d
[a11y] Semanctis flag refactor step 3: framework part (#167771) 
issue: https://github.com/flutter/flutter/issues/166101, overall goal is
to update semantics flag to be a struct/class to support more than 32
flags.

step 1: https://github.com/flutter/flutter/pull/167421 Update
semantics_node.h and dart:ui
step 2: https://github.com/flutter/flutter/pull/167738 Update Embedder
part to use a struct instead of a int bit mask.
step 3:(this PR) Update Framework use the SemanticsFlags class instead
of bitmask

TODO:
web engine
use the new class

SemanticsUpdateBuilder.updateNode
pass a list of bools instead of bitmask

flutter_tester
use the SemanticsFlags class instead of bitmask


[apicheck_test.dart](https://github.com/flutter/flutter/pull/167421/files#diff-69aefaacf1041f639974044962123bfae0756ce86032ac1f26256099425d7a5a)
Add this test back
 2025-05-13 23:48:10 +00:00
ash2moon
f3a1806562
Use live region in error text input decorator for Android (#165531) 
Resolves partly https://github.com/flutter/flutter/issues/165510


**Context:** This issue originates from
https://github.com/flutter/flutter/issues/99715, where it was reported
that `liveRegion` alone was insufficient for announcing form validation
errors. While `liveRegion` announces the first error encountered,
subsequent submissions with the same error message on Android would not
trigger a re-announcement.

**Original Solution:** Pull request
https://github.com/flutter/flutter/pull/123373 addressed this by
implementing the `announce` event to ensure error messages were
consistently announced, even for repeated submissions.

**Native Android Behavior (Jetpack Compose):** In native Android
development using Jetpack Compose, setting the `isError` property of a
`TextField` to `true` triggers Talkback to announce "Error invalid
input." This announcement occurs *only* on the initial change to the
error state. Subsequent errors, even if the `isError` property remains
`true`, are not re-announced. This behavior closely mirrors the
functionality of `liveRegion`, with the key difference being that
`liveRegion` also announces the specific error text, in addition to the
general error state. Testing in a native Jetpack Compose application
confirms this behavior and provides a valuable comparison point against
the current Flutter form example.

**Suggested Action:** **Fork** the behavior in
https://github.com/flutter/flutter/pull/123373. Reinstate the use of
`liveRegion` for error announcements within `widgets/Form` for Android
and keep other platforms the same.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

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---------

Co-authored-by: Reid Baker <1063596+reidbaker@users.noreply.github.com>
 2025-05-13 17:47:09 +00:00
Qun Cheng
194fb17d2a
Make MergeSemantics be able to merge customAction (#168414) 
Fixes https://github.com/flutter/flutter/issues/166588

When merging semantics, an empty customSemanticsActions was always used
instead of using the `_customSemanticsActions` of the current semantics
node.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
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responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.
 2025-05-08 03:28:23 +00:00
Qun Cheng
826d065919
Revert "Wire up MenuAnchor, MenuBar, MenuItem-related widgets to aria roles (#165596)" (#168339) 
This reverts commit 417f47fda55e5ef0505a84ca9ce558ac287a5d25.

Fixes https://github.com/flutter/flutter/issues/168185

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 2025-05-05 23:57:33 +00:00
Qun Cheng
14c45d944e
Revert "Fix hit-testing order in semantics (#167522)" (#168235) 
This reverts commit d9cbff29bca75c8e1cf6a9fe24da44857de9445f.

Fixes https://github.com/flutter/flutter/issues/168164
 2025-05-05 01:28:40 +00:00
chunhtai
b982d42749
Relands "backfill custom painter semantics properties (#166375)" (#168113) 
This reverts commit 80d0409d137acdd55af4124b7622915c062c9d21.

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previous pr was merge with older branch which doesn't migrate new tests
added later

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 2025-05-01 18:15:49 +00:00
chunhtai
b47c298320
Removes semantics role search box (#167290) 
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it is replaced by textfield with SemanticsInputType.search

## Pre-launch Checklist

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 2025-04-30 23:53:20 +00:00
auto-submit[bot]
80d0409d13
Reverts "backfill custom painter semantics properties (#166375)" (#168103) 
<!-- start_original_pr_link -->
Reverts: flutter/flutter#166375
<!-- end_original_pr_link -->
<!-- start_initiating_author -->
Initiated by: chunhtai
<!-- end_initiating_author -->
<!-- start_revert_reason -->
Reason for reverting: bad merge due to branch out of date and new tests
were not migrated
<!-- end_revert_reason -->
<!-- start_original_pr_author -->
Original PR Author: chunhtai
<!-- end_original_pr_author -->

<!-- start_reviewers -->
Reviewed By: {hannah-hyj}
<!-- end_reviewers -->

<!-- start_revert_body -->
This change reverts the following previous change:
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fixes https://github.com/flutter/flutter/issues/166374

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<!-- end_revert_body -->

Co-authored-by: auto-submit[bot] <flutter-engprod-team@google.com>
 2025-04-30 21:50:48 +00:00
chunhtai
bc293af1b1
backfill custom painter semantics properties (#166375) 
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fixes https://github.com/flutter/flutter/issues/166374

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 2025-04-30 18:43:49 +00:00
Qun Cheng
d9cbff29bc
Fix hit-testing order in semantics (#167522) 
Fixes https://github.com/flutter/flutter/issues/163576

In `updateWith()` method, `_replaceChildren()` is called to generate
`_children` list. `_children` list is used to generate the hit test
order (`childrenInHitTestOrder`).

In `_replaceChildren()`, `childrenIn**Inverse**PaintOrder` is directly
assigned to _children, so _children itself follows hit test order. So
when we generate the `childrenInHitTestOrder`, we don't need to reverse
the children again.



https://github.com/user-attachments/assets/df9d852f-231e-4480-8d8b-10c1d406f120




## Pre-launch Checklist

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 2025-04-25 23:08:40 +00:00
Qun Cheng
417f47fda5
Wire up MenuAnchor, MenuBar, MenuItem-related widgets to aria roles (#165596) 
This PR is to wire up `MenuAnchor` related widgets to SemanticsRole.
* When use `MenuAnchor` and a menu is opened, the menu has
`SemanticsRole.menu`.
* `MenuBar` has `SemanticsRole.menuBar`
* `MenuItemButton` has `SemanticsRole.menuItem`
* `SubmenuButton` has `SemanticsRole.menuItem` with `aria-haspopup`
attribute setup.
* `CheckboxMenuButton` has `SemanticsRole.menuItemCheckbox`
* `RadioMenuButton` has `SemanticsRole.menuItemRadio`

This PR also includes some changes related to `OverlayPortal` and
`RawMenuAnchor` so the "button" and the "menu" that the button opens has
a "parent-children" relationship. Previously, they are siblings
relationship which will cause some navigation issue in a11y.

## Pre-launch Checklist

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there for submitting PRs.
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we expect every widget to implement].
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[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
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 2025-04-24 16:48:20 +00:00
ash2moon
6fc673fc36
add check for announcement support per platform (#166099) 
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Helps unblock https://github.com/flutter/flutter/pull/165531 and is part
of https://github.com/flutter/flutter/issues/165510

*If you had to change anything in the [flutter/tests] repo, include a
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 2025-04-08 15:02:08 +00:00
chunhtai
7afe7a5f8b
Adds semantics input type (#165925) 
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fixes https://github.com/flutter/flutter/issues/162130

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 2025-04-04 21:15:12 +00:00
Matan Lurey
997f742ac5
Fix ISSUE_TEMPLATE Ordering: 10 < 9, but 10 > 09 (#166455) 
Unfortunately `10_google3_bug.yml` comes before `2_bug.yml`.

This changes the name (slightly) of the issue templates based on the
instructions from GitHub on what to do when you have 10+ issue templates
(as a side-note: I wonder if we need/still use umbrella bugs for the
feature tracker, or two types of performance bugs)
 2025-04-03 00:24:34 +00:00
Yegor
fbbe0f9e7a
[a11y] add SemanticsValidationResult (#165935) 
Add `SemanticsValidationResult` to semantics that maps onto
`aria-invalid`.

Fixes https://github.com/flutter/flutter/issues/162142
 2025-04-02 22:00:19 +00:00
chunhtai
aeab137280
Adds semantics role and adjust semantics for navigation bar (#162467) 
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framework side of https://github.com/flutter/flutter/issues/107861

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 2025-04-02 21:28:56 +00:00
chunhtai
bf6481104d
Revert "Add set semantics enabled API and wire iOS a11y bridge (#1612… (#165901) 
…65)"

This reverts commit 26037dff87ade9d9dee04cc2ef90b3fe5cf0faf3.

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PR causes internal test failures

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 2025-03-25 18:24:46 +00:00
chunhtai
26037dff87
Add set semantics enabled API and wire iOS a11y bridge (#161265) 
fixes https://github.com/flutter/flutter/issues/158399

old pr https://github.com/flutter/engine/pull/56691

previously the only correct way to enable semantics is that ios
embedding receive signal from native OS, it call SetSemanticsEnabled to
shell and then to dart to enable semantics tree generation.

If for some reason framework decide to enable semantics first, e.g.
through SemanticsBinding.instance.ensureSemantics(typically due to
integration test or ci that wants to test semantics), the update will be
dropped in shell. Even if it later on receive signal from native OS to
turn on semantics, it can't construct the complete accessibility tree in
embedding because the updatesemantics sends diff update and previous
updates are gone forever. It will end up in a broken state.

This pr changes so that the only source of truth will be in the
framework side. When framework starts generating the the semantics tree,
it will call SetSemanticsTreeEnabled through dart:ui, and the embedding
needs to prepare itself to accept semantics update after receiving the
message.

This however require some refactoring on iOS embedding because it will
only create a11y bridge when receiving OS notification when assitive
technologies turns on.

This requires three phase transition

add an empty dart:ui API setSemanticsTreeEnabled
makes framework calls the empty API.
merge this pr with actual implementation of setSemanticsTreeEnabled

I will do the android part in a separate pr


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 2025-03-24 20:11:13 +00:00