Add support for exposing accessibility identifier as resource-id on Android #47961

bartekpacia · 2023-11-12T22:00:09Z

Accompanying framework PR: flutter/flutter#138331

This PR implements support for exposing SemanticsProperties.identifier on Android as resource-id. Mainly targeted at flutter/flutter#17988. Would also fix flutter/flutter#137735 but it was marked as duplicate. Anyway, there's a lot of context in that issue.

This PR requires changing the SemanticsUpdateBuilder interface (defined in engine) that framework depends on, so it requires introducing a temporary API (see question I asked on Discord to learn more about this approach).

Steps:
part 1: [engine] add SemanticsUpdateBuilderNew <-- we are here
part 2: [flutter] use SemanticsUpdateBuilderNew flutter/flutter#138331
part 3: [engine] update SemanticsUpdateBuilder to be the same as SemanticsUpdateBuilderNew #48882
part 4: [flutter] use (now updated) SemanticsUpdateBuilder again flutter/flutter#139942
part 5: [engine] remove SemanticsBuilderNew #49139

I'd like to do these changes first, and only then continue with the proper framework PR.

*More specifically: update SemanticsUpdateBuilder.updateNode() to be the same as SemanticsUpdateBuilderNew.updateNode(). Number of arguments that function takes is the only change.

Pre-launch Checklist

I read the Contributor Guide and followed the process outlined there for submitting PRs.
I read the Tree Hygiene wiki page, which explains my responsibilities.
I read and followed the Flutter Style Guide and the C++, Objective-C, Java style guides.
I listed at least one issue that this PR fixes in the description above.
I added new tests to check the change I am making or feature I am adding, or the PR is test-exempt. See testing the engine for instructions on writing and running engine tests.
I updated/added relevant documentation (doc comments with ///).
I signed the CLA.
All existing and new tests are passing.

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

bartekpacia · 2023-11-13T00:15:25Z

Demo of a basic example

Used framework commit: flutter/flutter@cdfd94c from PR flutter/flutter#138331

import 'package:flutter/material.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Semantics(
            identifier: 'some-blue-container',
            label: 'A blue container',
            child: Container(
              width: 100,
              height: 100,
              color: Colors.blue,
            ),
          ),
        ),
      ),
    );
  }
}

Interesting part of uiautomator dump result:

<node index="0" text="" resource-id="some-blue-container" class="android.view.View" package="com.example.example" content-desc="A blue container" checkable="false" checked="false" clickable="false" enabled="true" focusable="true" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[409,1006][671,1268]" />

Full uiautomator dump result

<?xml version='1.0' encoding='UTF-8' standalone='yes' ?>
<hierarchy rotation="0">
    <node index="0" text="" resource-id="" class="android.widget.FrameLayout" package="com.example.example" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[0,0][1080,2274]">
        <node index="0" text="" resource-id="" class="android.widget.LinearLayout" package="com.example.example" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[0,0][1080,2274]">
            <node index="0" text="" resource-id="android:id/content" class="android.widget.FrameLayout" package="com.example.example" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[0,0][1080,2274]">
                <node index="0" text="" resource-id="" class="android.widget.FrameLayout" package="com.example.example" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="true" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[0,0][1080,2274]">
                    <node index="0" text="" resource-id="" class="android.view.View" package="com.example.example" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[0,0][1080,2274]">
                        <node index="0" text="" resource-id="" class="android.view.View" package="com.example.example" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[0,0][1080,2274]">
                            <node index="0" text="" resource-id="" class="android.view.View" package="com.example.example" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[0,0][1080,2274]">
                                <node index="0" text="" resource-id="" class="android.view.View" package="com.example.example" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[0,0][1080,2274]">
                                    <node index="0" text="" resource-id="some-blue-container" class="android.view.View" package="com.example.example" content-desc="A blue container" checkable="false" checked="false" clickable="false" enabled="true" focusable="true" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[409,1006][671,1268]" />
                                </node>
                            </node>
                        </node>
                    </node>
                </node>
            </node>
        </node>
        <node index="1" text="" resource-id="android:id/statusBarBackground" class="android.view.View" package="com.example.example" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[0,0][1080,63]" />
        <node index="2" text="" resource-id="android:id/navigationBarBackground" class="android.view.View" package="com.example.example" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" bounds="[0,0][0,0]" />
    </node>
</hierarchy>

chunhtai

Do you have iOS pr?

lib/ui/semantics.dart

chunhtai · 2023-11-17T18:10:56Z

lib/ui/semantics.dart

@@ -872,6 +876,7 @@ base class _NativeSemanticsUpdateBuilder extends NativeFieldWrapperClass1 implem
    required double elevation,
    required double thickness,
    required Rect rect,
+    String? identifier,


why nullable? can this be required?

tbh I'm not sure. I took inspiration from tooltip which is also a raw string, not List<StringAttribute>, and it is nullable.

But in the native semantics layer (at least on Android) the node's resource-id cannot be null, only empty.

it was probably an oversight or maybe due to easier migration. Can you try to make it required and not nullable?

Done in c50bcee.

Should I do the same for tooltip (probably in a separate PR)?

lib/ui/semantics/semantics_update_builder.cc

bartekpacia · 2023-11-17T19:47:56Z

Thank you for the review @chunhtai! This is not quite ready but I appreciate it. Also I'll ping you once it is ready.

Do you have iOS pr?

Not yet.

…dateBuilder

… logs

bartekpacia · 2023-11-21T10:10:54Z

@chunhtai

Do you have iOS pr?

Should I implement the iOS part in the same PR as Android part, or can these changes be made in different PRs?

chunhtai · 2023-11-21T20:23:47Z

I would suggest open a separate pr for iOS part and people can review entire thing as a whole.

chunhtai · 2023-11-21T20:24:23Z

Also can this apply to desktop?

bartekpacia · 2023-11-21T21:37:51Z

Also can this apply to desktop?

On macOS – probably, it's pretty similar to mobile iOS. I don't know about other platforms though. But right now I'd like to bring this feature to mobile.

bartekpacia · 2023-11-22T23:45:27Z

This PR requires changing the SemanticsUpdateBuilder interface (defined in engine) that framework depends on. So it will require introducing a temporary API (see question I asked on Discord).

chunhtai

Just some nit picking. Otherwise LGTM, please only merge when all the relevant PRs are approved

chunhtai · 2023-11-27T18:28:38Z

lib/ui/semantics.dart

@@ -872,6 +876,7 @@ base class _NativeSemanticsUpdateBuilder extends NativeFieldWrapperClass1 implem
    required double elevation,
    required double thickness,
    required Rect rect,
+    String? identifier,


it was probably an oversight or maybe due to easier migration. Can you try to make it required and not nullable?

lib/ui/semantics.dart

bartekpacia · 2023-11-27T18:52:48Z

please only merge when all the relevant PRs are approved

Could you clarify this? This PR is actually the first one that has to land. I described the plan in the PR description (link). (Also this is my first time doing a gradual migration like this, I'd appreciate you looking if that plan makes sense).

chunhtai · 2023-11-27T21:28:24Z

I meant you should have all prs approved, usually the framework and engine pr. We don't want to merge the engine pr and figure out the the code need to be updated due to addressing comment in the framework pr. It would also help to reduce the time that the transitional code lives in the code base

Would be good to have clean up pr up as well, but that is required if it is hard to do.

bartekpacia · 2023-11-27T21:48:22Z

Understood. So I'm waiting until the framework PR gets green light. I responded to your comments there btw.

Would be good to have clean up pr up as well, but that is required if it is hard to do.

I don't think that's necessary - cleanup PRs are going to be simple since SemanticsUpdateBuilder is used in 7 places in flutter/flutter code (excluding tests).

…ce-id on Android (flutter/engine#47961)

…139497) flutter/engine@eee8aeb...c6395d9 2023-12-04 [email protected] Add support for exposing accessibility identifier as resource-id on Android (flutter/engine#47961) 2023-12-04 [email protected] Roll Skia from 540d76ea74f8 to db4a29e0689e (2 revisions) (flutter/engine#48633) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll Please CC [email protected],[email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

This PR adds `String? identifier` to `Semantics` and `SemanticsProperties`. The `identifier` will be exposed on Android as `resource-id` and on iOS as `accessibilityIdentifier`. Mainly targeted at #17988 Initial Engine PR with Android support: flutter/engine#47961 iOS Engine PR: flutter/engine#48858 ### Migration This change breaks the SemanticsUpdateBuilder API which is on the Framework<-->Engine border. For more details see [engine PR](flutter/engine#47961). Steps: part 1: [engine] add `SemanticsUpdateBuilderNew` flutter/engine#47961 **part 2: [flutter] use `SemanticsUpdateBuilderNew`** <-- we are here part 3: [engine] update `SemanticsUpdateBuilder` to be the same as `SemanticsUpdateBuilderNew`* part 4: [flutter] use (now updated) `SemanticsUpdateBuilder` again. part 5: [engine] remove `SemanticsBuilderNew`

…ntifier on iOS (#48858) This PR is a sibling of #47961 but for iOS

This PR adds `String? identifier` to `SemanticsUpdateBuilder` (currently it's only available in the temproary `SemanticsUpdateBuilderNew` API. This is mainly targeted at flutter/flutter#17988 Steps: part 1: [engine] add `SemanticsUpdateBuilderNew` #47961 part 2: [flutter] use `SemanticsUpdateBuilderNew` flutter/flutter#138331 **part 3: [engine] update `SemanticsUpdateBuilder` to be the same as `SemanticsUpdateBuilderNew`** <-- we are here part 4: [flutter] use (now updated) `SemanticsUpdateBuilder` again. part 5: [engine] remove `SemanticsBuilderNew`

…y `SemanticsUpdateBuilderNew` (#139942) This PR removes all usages of the temporary `SemanticsUpdateBuilderNew` API in favor of `SemanticsUpdateBuilder`. These two APIs are the same as of now. This is mainly targeted at #17988 Steps: part 1: [engine] add `SemanticsUpdateBuilderNew` flutter/engine#47961 part 2: [flutter] use `SemanticsUpdateBuilderNew` #138331 part 3: [engine] update `SemanticsUpdateBuilder` to be the same as `SemanticsUpdateBuilderNew` flutter/engine#48882 **part 4: [flutter] use (now updated) `SemanticsUpdateBuilder` again** <-- we are here part 5: [engine] remove `SemanticsBuilderNew`

) This PR completest the migration by removing `SemanticsUpdateBuilderNew` from the engine. This is mainly targeted at flutter/flutter#17988 Steps: part 1: [engine] add `SemanticsUpdateBuilderNew` #47961 part 2: [flutter] use `SemanticsUpdateBuilderNew` flutter/flutter#138331 part 3: [engine] update `SemanticsUpdateBuilder` to be the same as `SemanticsUpdateBuilderNew` #48882 part 4: [flutter] use (now updated) `SemanticsUpdateBuilder` again flutter/flutter#139942 **part 5: [engine] remove `SemanticsBuilderNew`** <-- we are here

This PR is inspired by [the suggestion made here](#47961 (comment)).

github-actions bot added the platform-android label Nov 12, 2023

bartekpacia changed the title ~~Feature/android add accessibility identifier~~ Add support for exposing accessibility identifier as resource-id on Android Nov 12, 2023

bartekpacia mentioned this pull request Nov 12, 2023

[DRAFT] Research setting accessibilityIdentifier/resource-id #47661

Closed

github-actions bot added the platform-web Code specifically for the web engine label Nov 14, 2023

bartekpacia mentioned this pull request Nov 16, 2023

Add accessibility identifier to SemanticsProperties flutter/flutter#138331

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chunhtai reviewed Nov 17, 2023

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bartekpacia added 8 commits November 17, 2023 23:50

lib/ui: add support for identifier in SemanticsNode and SemanticsUp…

72a9015

…dateBuilder

PlatformViewAndroidDelegate: update JNI encoding to support identifier

635567b

Android AccessibilityBridge: expose identifier as resource-id

f4f0328

platform_view_android_delegate_unittests: fix tests

802d0a3

fix AccessibilityBridgeTest failing

c9c2ef9

add new test for identifier in AccessibilityBridgeTest

7b1efad

try to fix api_conform_test

5646ef1

semantics_update_builder.cc: remove FML_LOG which causes way too many…

88abc9d

… logs

bartekpacia mentioned this pull request Nov 18, 2023

[Feature Request] Add support for flutter element keys mobile-dev-inc/maestro#1424

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bartekpacia added 2 commits November 20, 2023 23:30

semantics_update_builder: remove debug code

cd98fb2

add identifier to missing methods in web UI engine tests

5a45d2c

bartekpacia added 2 commits November 23, 2023 09:43

create temporary SemanticsUpdateBuilderNew

6a53033

web_ui: create temporary SemanticsUpdateBuilderNew

15b7410

bartekpacia marked this pull request as ready for review November 23, 2023 22:28

bartekpacia requested review from chunhtai and chinmaygarde November 23, 2023 22:28

chunhtai approved these changes Nov 27, 2023

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Merge branch 'main' into feature/android_add_accessibility_identifier

7a0b734

chunhtai added the autosubmit Merge PR when tree becomes green via auto submit App label Dec 4, 2023

auto-submit bot merged commit c6395d9 into flutter:main Dec 4, 2023
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engine-flutter-autoroll mentioned this pull request Dec 4, 2023

Roll Flutter Engine from eee8aeb953df to c6395d920786 (2 revisions) flutter/flutter#139497

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engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Dec 4, 2023

c6395d920 Add support for exposing accessibility identifier as resour…

60a6521

…ce-id on Android (flutter/engine#47961)

bartekpacia deleted the feature/android_add_accessibility_identifier branch December 4, 2023 20:19

bartekpacia mentioned this pull request Dec 9, 2023

Add support for exposing accessibility identifier as accessibilityIdentifier on iOS #48858

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8 tasks

bartekpacia mentioned this pull request Dec 11, 2023

SemanticsUpdateBuilder migration: introduce identifier #48882

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8 tasks

auto-submit bot pushed a commit that referenced this pull request Dec 11, 2023

Add support for exposing accessibility identifier as accessibilityIde…

c660860

…ntifier on iOS (#48858) This PR is a sibling of #47961 but for iOS

bartekpacia mentioned this pull request Dec 11, 2023

Use SemanticsUpdateBuilder again, remove all references to temporary SemanticsUpdateBuilderNew flutter/flutter#139942

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8 tasks

This was referenced Dec 16, 2023

Delete SemanticsUpdateBuilderNew and all references and usages #49139

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SemanticsUpdateBuilder: make all args non-null #49148

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auto-submit bot pushed a commit that referenced this pull request Dec 20, 2023

SemanticsUpdateBuilder: make all args non-null (#49148)

b404502

This PR is inspired by [the suggestion made here](#47961 (comment)).

bartekpacia mentioned this pull request Dec 22, 2023

Provide better support for UiAutomator flutter/flutter#32062

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bartekpacia mentioned this pull request Jan 9, 2024

Missing accessibility-id for testing purposes flutter/flutter#17988

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hannah-hyj mentioned this pull request Mar 5, 2024

TextField Acessibility ID not persist after build flutter/flutter#144357

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juanmanjarres mentioned this pull request Apr 3, 2024

resource-id not working correctly inside Card flutter/flutter#146215

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nicerloop mentioned this pull request May 21, 2024

[Windows] Missing automationId for testing purposes flutter/flutter#148763

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Add support for exposing accessibility identifier as resource-id on Android #47961

Add support for exposing accessibility identifier as resource-id on Android #47961

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Add support for exposing accessibility identifier as resource-id on Android #47961

Add support for exposing accessibility identifier as resource-id on Android #47961

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Pre-launch Checklist

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Demo of a basic example

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