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[Slider] Remove value indicator painter when animation is dismissed#182991

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dkwingsmt:remove-indicator-slider
Mar 24, 2026
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[Slider] Remove value indicator painter when animation is dismissed#182991
auto-submit[bot] merged 9 commits into
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dkwingsmt:remove-indicator-slider

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@dkwingsmt

@dkwingsmt dkwingsmt commented Feb 27, 2026

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With this PR, Slider stops painting the value indicator when activationAnimation is dismissed.

Fixes #180767.

This change has no effect on default value indicator shapes, which animates with activationAnimation and do not paint anything when the animation is dismissed. However, for custom value indicator shapes that do not animate, this allows value indicators to be properly hidden after the animation duration.

For testing, this PR refactors an existing test case, since I consider the new test case a superset of the previous one and improves its capability.

  • Previously the test case only verifies the status before dragging and during dragging. Now it also verifies that after dragging.
  • Previously the test case uses the default value indicator shapes. Now it uses a custom one that does not animate.

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@github-actions github-actions Bot added framework flutter/packages/flutter repository. See also f: labels. f: material design flutter/packages/flutter/material repository. labels Feb 27, 2026
@dkwingsmt dkwingsmt requested a review from QuncCccccc February 27, 2026 06:59

testWidgets('Value indicator appears when it should', (WidgetTester tester) async {
// Regression test for https://github.com/flutter/flutter/issues/180767
testWidgets('Value indicator appears and disappears when it should', (WidgetTester tester) async {

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For reviewer: If the change here is too confusing, I'm happy to split the refactor part into a separate PR.

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Super nit: separating it into 2 tests might be a bit better. But I'm also fine with the current test:)!

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Code Review

This pull request correctly addresses an issue where custom slider value indicators would not hide properly by ensuring the paintValueIndicator is set to null when the animation is dismissed. The accompanying test changes are excellent, providing more robust verification of the indicator's visibility lifecycle. I've identified a logic issue in the condition for showing the indicator and have provided a suggestion to improve its correctness and readability.

Comment thread packages/flutter/lib/src/material/slider.dart Outdated
Comment thread packages/flutter/lib/src/material/slider.dart Outdated
Comment thread packages/flutter/lib/src/material/slider.dart
Comment thread packages/flutter/test/material/slider_test.dart Outdated
Comment thread packages/flutter/test/material/slider_test.dart Outdated
navaronbracke
navaronbracke previously approved these changes Feb 27, 2026
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Thank you for reviewing!

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LGTM. Thanks!


testWidgets('Value indicator appears when it should', (WidgetTester tester) async {
// Regression test for https://github.com/flutter/flutter/issues/180767
testWidgets('Value indicator appears and disappears when it should', (WidgetTester tester) async {

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Super nit: separating it into 2 tests might be a bit better. But I'm also fine with the current test:)!

QuncCccccc
QuncCccccc previously approved these changes Mar 3, 2026
Comment on lines +3043 to +3044
visibleWhenDragged: true,
visibleWhenReleased: true,

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Suggested change
visibleWhenDragged: true,
visibleWhenReleased: true,
visibleWhenDragged: false,
visibleWhenReleased: false,

Comment on lines +3051 to +3052
visibleWhenDragged: true,
visibleWhenReleased: true,

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Suggested change
visibleWhenDragged: true,
visibleWhenReleased: true,
visibleWhenDragged: false,
visibleWhenReleased: false,

These should be false when slider is disabled. I think this can fix the failed test!

github-merge-queue Bot pushed a commit that referenced this pull request Mar 18, 2026
)

This PR refactors this slider test so that
* The test is split into multiple tests in a single group for better
readability.
* A single `expectValueIndicator` tests both the dragged state and the
released state, for better readability.
* The widget state is reset at the end of `expectValueIndicator` to
avoid state leak...
* ... which revealed a test case that has been written incorrectly.
* `ShowValueIndicator.alwaysVisible`'s doc is corrected to reflect its
actual behavior.

This PR is split from, and is a prerequisite of,
#182991.

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there for submitting PRs.
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responsibilities.
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we expect every widget to implement].
- [ ] I signed the [CLA].
- [ ] 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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- [ ] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [ ] All existing and new tests are passing.

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@dkwingsmt dkwingsmt dismissed stale reviews from QuncCccccc and navaronbracke via b09460d March 18, 2026 20:02
@dkwingsmt dkwingsmt added the CICD Run CI/CD label Mar 18, 2026
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This PR is ready for another review.

There's no additional change in slider.dart‎. I've merged the PR with master, incorporating #183143, which only affects the unit tests.

navaronbracke
navaronbracke previously approved these changes Mar 19, 2026

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LGTM, with doc nits

// A slider value indicator that's a circle with a fixed size and
// does not animate at all.
//
// This allows us to test whether `Slider` removes the value indicator painter

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Shouldn't we avoid "us/we" per the style guide?

//
// This allows us to test whether `Slider` removes the value indicator painter
// when animation is dismissed (a more strict requirement than "painting
// nothing"). The default value indicator shapes is not suitable for this job

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"shape" not "shapes" ?

// This allows us to test whether `Slider` removes the value indicator painter
// when animation is dismissed (a more strict requirement than "painting
// nothing"). The default value indicator shapes is not suitable for this job
// since they do not paint anything when animation is dismissed.

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"it does not paint", per the change above

@flutter-dashboard flutter-dashboard Bot removed the autosubmit Merge PR when tree becomes green via auto submit App label Mar 24, 2026
mozammal-hossain added a commit to mozammal-hossain/flutter that referenced this pull request Mar 24, 2026
….com/mozammal-hossain/flutter into fix/167595-ios-signing-error-message

* 'fix/167595-ios-signing-error-message' of https://github.com/mozammal-hossain/flutter:
  [iOS] Clarify provisioning profile error instructions
  Roll Dart SDK from 788e347194a6 to f504293598f2 (1 revision) (flutter#184048)
  Roll Skia from fb6acef456ea to 62841a512deb (2 revisions) (flutter#184046)
  [Slider] Remove value indicator painter when animation is dismissed (flutter#182991)
  Manual roll ICU from 7971660ba630 to ee5f27adc28b (1 revision) (flutter#184041)
  Add scrollPadding property to DropdownMenu (flutter#183109)
  Roll pub packages (flutter#183895)
  Roll Skia from c2b58922e37d to fb6acef456ea (1 revision) (flutter#184033)
  Roll Dart SDK from b172bea4f008 to 788e347194a6 (2 revisions) (flutter#184035)
  chore: deflake Linux_android_emu android_display_cutout (flutter#183522)
  Add note about gclient sync network failures and workaround (flutter#183794)
  Roll Skia from a81bf411a5cb to c2b58922e37d (3 revisions) (flutter#184016)
  refactor(web): use positive logic and platform defaults for accessibility features (flutter#183907)
  [android][a11y] set "android.widget.ProgressBar" according to semantics role (flutter#183897)
  Add progress bar to artifact downloads (flutter#182836)
  Add windows instruction to `Forcing Flutter Tools Snapshot Regeneration` (flutter#183977)
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Manual roll Flutter from dd64978dfae1 to 82d96ef98a33 (89 revisions)

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flutter/flutter@dd64978...82d96ef

2026-03-24 116356835+AbdeMohlbi@users.noreply.github.com Fix RenderStack's documentation (flutter/flutter#183822)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from a465876e3156 to f4e59f82dc69 (4 revisions) (flutter/flutter#184082)
2026-03-24 30870216+gaaclarke@users.noreply.github.com Refactor: Removes Geometry field from ColorSourceContents (flutter/flutter#183952)
2026-03-24 katelovett@google.com Refactor layout dimensions (flutter/flutter#184066)
2026-03-24 abadasamuelosp@gmail.com feat: Add --base-href support to flutter run for web (flutter/flutter#182709)
2026-03-24 43498643+mkucharski17@users.noreply.github.com Add LeanCode and contributors to AUTHORS (flutter/flutter#182997)
2026-03-24 dacoharkes@google.com [tools] Make sure `assemble` has a pubspec as cwd (flutter/flutter#184067)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from bf4f2763b6e6 to a465876e3156 (5 revisions) (flutter/flutter#184068)
2026-03-24 evanwall@buffalo.edu fix gaussian blur getting clipped with negative scale (flutter/flutter#184037)
2026-03-24 34871572+gmackall@users.noreply.github.com Keep glyphs for variable fonts (flutter/flutter#183857)
2026-03-24 dacoharkes@google.com Mark `IconData` `final` and `@mustBeConst` (flutter/flutter#181345)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from 62841a512deb to bf4f2763b6e6 (1 revision) (flutter/flutter#184062)
2026-03-24 ahmedsameha1@gmail.com Use Color.a instead of Color.alpha to assert the opacity of the color… (flutter/flutter#184003)
2026-03-24 engine-flutter-autoroll@skia.org Roll Dart SDK from f504293598f2 to b08bd0a3ee39 (1 revision) (flutter/flutter#184054)
2026-03-24 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from x9x76ERXhrt0Q3zKf... to M3sjWggTQmP2AD4bS... (flutter/flutter#184053)
2026-03-24 engine-flutter-autoroll@skia.org Roll Dart SDK from 788e347194a6 to f504293598f2 (1 revision) (flutter/flutter#184048)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from fb6acef456ea to 62841a512deb (2 revisions) (flutter/flutter#184046)
2026-03-24 dkwingsmt@users.noreply.github.com [Slider] Remove value indicator painter when animation is dismissed (flutter/flutter#182991)
2026-03-24 engine-flutter-autoroll@skia.org Manual roll ICU from 7971660ba630 to ee5f27adc28b (1 revision) (flutter/flutter#184041)
2026-03-23 ishaquehassan@gmail.com Add scrollPadding property to DropdownMenu (flutter/flutter#183109)
2026-03-23 137456488+flutter-pub-roller-bot@users.noreply.github.com Roll pub packages (flutter/flutter#183895)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from c2b58922e37d to fb6acef456ea (1 revision) (flutter/flutter#184033)
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2026-03-23 vs.ashoknarayan@gmail.com Add note about gclient sync network failures and workaround (flutter/flutter#183794)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from a81bf411a5cb to c2b58922e37d (3 revisions) (flutter/flutter#184016)
2026-03-23 1961493+harryterkelsen@users.noreply.github.com refactor(web): use positive logic and platform defaults for accessibility features (flutter/flutter#183907)
2026-03-23 jhy03261997@gmail.com [android][a11y] set "android.widget.ProgressBar" according to semantics role (flutter/flutter#183897)
2026-03-23 mr-peipei@web.de Add progress bar to artifact downloads (flutter/flutter#182836)
2026-03-23 116356835+AbdeMohlbi@users.noreply.github.com Add windows instruction to `Forcing Flutter Tools Snapshot Regeneration` (flutter/flutter#183977)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from 42a6eb1dc5c9 to a81bf411a5cb (3 revisions) (flutter/flutter#184007)
2026-03-23 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from q1xqlQPxq8a3JTA4P... to x9x76ERXhrt0Q3zKf... (flutter/flutter#184006)
2026-03-23 engine-flutter-autoroll@skia.org Roll Dart SDK from ef45f179526f to b172bea4f008 (1 revision) (flutter/flutter#184004)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from 964c3b33fd73 to 42a6eb1dc5c9 (1 revision) (flutter/flutter#184001)
2026-03-23 matt.kosarek@canonical.com Update the windowing docs per the latest wording found while doing Satellites (flutter/flutter#183748)
2026-03-22 48625061+muradhossin@users.noreply.github.com Add assert for mutually exclusive errorBuilder and errorText (flutter/flutter#183901)
2026-03-22 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from Yc7Ijp2ySjG841xha... to q1xqlQPxq8a3JTA4P... (flutter/flutter#183991)
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2026-03-21 engine-flutter-autoroll@skia.org Roll Skia from 569cc0475162 to 812822ad5caa (2 revisions) (flutter/flutter#183970)
2026-03-20 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from ilAIAVzu4xmeb078x... to Yc7Ijp2ySjG841xha... (flutter/flutter#183956)
2026-03-20 engine-flutter-autoroll@skia.org Roll Skia from 79a14289c60d to 569cc0475162 (3 revisions) (flutter/flutter#183954)
2026-03-20 engine-flutter-autoroll@skia.org Roll Dart SDK from c88a8008e93b to c831a55e2fcc (3 revisions) (flutter/flutter#183953)
2026-03-20 engine-flutter-autoroll@skia.org Roll Skia from 8d4c76b92050 to 79a14289c60d (4 revisions) (flutter/flutter#183949)
...
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Manual roll Flutter from dd64978dfae1 to 82d96ef98a33 (89 revisions)

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flutter/flutter@dd64978...82d96ef

2026-03-24 116356835+AbdeMohlbi@users.noreply.github.com Fix RenderStack's documentation (flutter/flutter#183822)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from a465876e3156 to f4e59f82dc69 (4 revisions) (flutter/flutter#184082)
2026-03-24 30870216+gaaclarke@users.noreply.github.com Refactor: Removes Geometry field from ColorSourceContents (flutter/flutter#183952)
2026-03-24 katelovett@google.com Refactor layout dimensions (flutter/flutter#184066)
2026-03-24 abadasamuelosp@gmail.com feat: Add --base-href support to flutter run for web (flutter/flutter#182709)
2026-03-24 43498643+mkucharski17@users.noreply.github.com Add LeanCode and contributors to AUTHORS (flutter/flutter#182997)
2026-03-24 dacoharkes@google.com [tools] Make sure `assemble` has a pubspec as cwd (flutter/flutter#184067)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from bf4f2763b6e6 to a465876e3156 (5 revisions) (flutter/flutter#184068)
2026-03-24 evanwall@buffalo.edu fix gaussian blur getting clipped with negative scale (flutter/flutter#184037)
2026-03-24 34871572+gmackall@users.noreply.github.com Keep glyphs for variable fonts (flutter/flutter#183857)
2026-03-24 dacoharkes@google.com Mark `IconData` `final` and `@mustBeConst` (flutter/flutter#181345)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from 62841a512deb to bf4f2763b6e6 (1 revision) (flutter/flutter#184062)
2026-03-24 ahmedsameha1@gmail.com Use Color.a instead of Color.alpha to assert the opacity of the color… (flutter/flutter#184003)
2026-03-24 engine-flutter-autoroll@skia.org Roll Dart SDK from f504293598f2 to b08bd0a3ee39 (1 revision) (flutter/flutter#184054)
2026-03-24 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from x9x76ERXhrt0Q3zKf... to M3sjWggTQmP2AD4bS... (flutter/flutter#184053)
2026-03-24 engine-flutter-autoroll@skia.org Roll Dart SDK from 788e347194a6 to f504293598f2 (1 revision) (flutter/flutter#184048)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from fb6acef456ea to 62841a512deb (2 revisions) (flutter/flutter#184046)
2026-03-24 dkwingsmt@users.noreply.github.com [Slider] Remove value indicator painter when animation is dismissed (flutter/flutter#182991)
2026-03-24 engine-flutter-autoroll@skia.org Manual roll ICU from 7971660ba630 to ee5f27adc28b (1 revision) (flutter/flutter#184041)
2026-03-23 ishaquehassan@gmail.com Add scrollPadding property to DropdownMenu (flutter/flutter#183109)
2026-03-23 137456488+flutter-pub-roller-bot@users.noreply.github.com Roll pub packages (flutter/flutter#183895)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from c2b58922e37d to fb6acef456ea (1 revision) (flutter/flutter#184033)
2026-03-23 engine-flutter-autoroll@skia.org Roll Dart SDK from b172bea4f008 to 788e347194a6 (2 revisions) (flutter/flutter#184035)
2026-03-23 codefu@google.com chore: deflake Linux_android_emu android_display_cutout (flutter/flutter#183522)
2026-03-23 vs.ashoknarayan@gmail.com Add note about gclient sync network failures and workaround (flutter/flutter#183794)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from a81bf411a5cb to c2b58922e37d (3 revisions) (flutter/flutter#184016)
2026-03-23 1961493+harryterkelsen@users.noreply.github.com refactor(web): use positive logic and platform defaults for accessibility features (flutter/flutter#183907)
2026-03-23 jhy03261997@gmail.com [android][a11y] set "android.widget.ProgressBar" according to semantics role (flutter/flutter#183897)
2026-03-23 mr-peipei@web.de Add progress bar to artifact downloads (flutter/flutter#182836)
2026-03-23 116356835+AbdeMohlbi@users.noreply.github.com Add windows instruction to `Forcing Flutter Tools Snapshot Regeneration` (flutter/flutter#183977)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from 42a6eb1dc5c9 to a81bf411a5cb (3 revisions) (flutter/flutter#184007)
2026-03-23 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from q1xqlQPxq8a3JTA4P... to x9x76ERXhrt0Q3zKf... (flutter/flutter#184006)
2026-03-23 engine-flutter-autoroll@skia.org Roll Dart SDK from ef45f179526f to b172bea4f008 (1 revision) (flutter/flutter#184004)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from 964c3b33fd73 to 42a6eb1dc5c9 (1 revision) (flutter/flutter#184001)
2026-03-23 matt.kosarek@canonical.com Update the windowing docs per the latest wording found while doing Satellites (flutter/flutter#183748)
2026-03-22 48625061+muradhossin@users.noreply.github.com Add assert for mutually exclusive errorBuilder and errorText (flutter/flutter#183901)
2026-03-22 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from Yc7Ijp2ySjG841xha... to q1xqlQPxq8a3JTA4P... (flutter/flutter#183991)
2026-03-21 engine-flutter-autoroll@skia.org Roll Skia from 812822ad5caa to 964c3b33fd73 (1 revision) (flutter/flutter#183982)
2026-03-21 engine-flutter-autoroll@skia.org Roll Dart SDK from c831a55e2fcc to ef45f179526f (1 revision) (flutter/flutter#183973)
2026-03-21 engine-flutter-autoroll@skia.org Roll Skia from 569cc0475162 to 812822ad5caa (2 revisions) (flutter/flutter#183970)
2026-03-20 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from ilAIAVzu4xmeb078x... to Yc7Ijp2ySjG841xha... (flutter/flutter#183956)
2026-03-20 engine-flutter-autoroll@skia.org Roll Skia from 79a14289c60d to 569cc0475162 (3 revisions) (flutter/flutter#183954)
2026-03-20 engine-flutter-autoroll@skia.org Roll Dart SDK from c88a8008e93b to c831a55e2fcc (3 revisions) (flutter/flutter#183953)
2026-03-20 engine-flutter-autoroll@skia.org Roll Skia from 8d4c76b92050 to 79a14289c60d (4 revisions) (flutter/flutter#183949)
...
mboetger pushed a commit to mboetger/flutter that referenced this pull request Mar 26, 2026
…ter#183143)

This PR refactors this slider test so that
* The test is split into multiple tests in a single group for better
readability.
* A single `expectValueIndicator` tests both the dragged state and the
released state, for better readability.
* The widget state is reset at the end of `expectValueIndicator` to
avoid state leak...
* ... which revealed a test case that has been written incorrectly.
* `ShowValueIndicator.alwaysVisible`'s doc is corrected to reflect its
actual behavior.

This PR is split from, and is a prerequisite of,
flutter#182991.

## 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], including [Features
we expect every widget to implement].
- [ ] I signed the [CLA].
- [ ] 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
[test-exempt].
- [ ] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [ ] All existing and new tests are passing.

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

**Note**: The Flutter team is currently trialing the use of [Gemini Code
Assist for
GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code).
Comments from the `gemini-code-assist` bot should not be taken as
authoritative feedback from the Flutter team. If you find its comments
useful you can update your code accordingly, but if you are unsure or
disagree with the feedback, please feel free to wait for a Flutter team
member's review for guidance on which automated comments should be
addressed.

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
mboetger pushed a commit to mboetger/flutter that referenced this pull request Mar 26, 2026
…lutter#182991)

With this PR, `Slider` stops painting the value indicator when
`activationAnimation` is dismissed.

Fixes flutter#180767.

This change has no effect on default value indicator shapes, which
animates with `activationAnimation` and do not paint anything when the
animation is dismissed. However, for custom value indicator shapes that
do not animate, this allows value indicators to be properly hidden after
the animation duration.

For testing, this PR refactors an existing test case, since I consider
the new test case a superset of the previous one and improves its
capability.
* Previously the test case only verifies the status before dragging and
during dragging. Now it also verifies that after dragging.
* Previously the test case uses the default value indicator shapes. Now
it uses a custom one that does not animate.

## 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], including [Features
we expect every widget to implement].
- [ ] I signed the [CLA].
- [ ] 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
[test-exempt].
- [ ] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [ ] All existing and new tests are passing.

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

**Note**: The Flutter team is currently trialing the use of [Gemini Code
Assist for
GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code).
Comments from the `gemini-code-assist` bot should not be taken as
authoritative feedback from the Flutter team. If you find its comments
useful you can update your code accordingly, but if you are unsure or
disagree with the feedback, please feel free to wait for a Flutter team
member's review for guidance on which automated comments should be
addressed.

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
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[test-exempt]:
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[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
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[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
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[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
ahmedsameha1 pushed a commit to ahmedsameha1/flutter that referenced this pull request Apr 14, 2026
…ter#183143)

This PR refactors this slider test so that
* The test is split into multiple tests in a single group for better
readability.
* A single `expectValueIndicator` tests both the dragged state and the
released state, for better readability.
* The widget state is reset at the end of `expectValueIndicator` to
avoid state leak...
* ... which revealed a test case that has been written incorrectly.
* `ShowValueIndicator.alwaysVisible`'s doc is corrected to reflect its
actual behavior.

This PR is split from, and is a prerequisite of,
flutter#182991.

## 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], including [Features
we expect every widget to implement].
- [ ] I signed the [CLA].
- [ ] 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
[test-exempt].
- [ ] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [ ] All existing and new tests are passing.

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

**Note**: The Flutter team is currently trialing the use of [Gemini Code
Assist for
GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code).
Comments from the `gemini-code-assist` bot should not be taken as
authoritative feedback from the Flutter team. If you find its comments
useful you can update your code accordingly, but if you are unsure or
disagree with the feedback, please feel free to wait for a Flutter team
member's review for guidance on which automated comments should be
addressed.

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
ahmedsameha1 pushed a commit to ahmedsameha1/flutter that referenced this pull request Apr 14, 2026
…lutter#182991)

With this PR, `Slider` stops painting the value indicator when
`activationAnimation` is dismissed.

Fixes flutter#180767.

This change has no effect on default value indicator shapes, which
animates with `activationAnimation` and do not paint anything when the
animation is dismissed. However, for custom value indicator shapes that
do not animate, this allows value indicators to be properly hidden after
the animation duration.

For testing, this PR refactors an existing test case, since I consider
the new test case a superset of the previous one and improves its
capability.
* Previously the test case only verifies the status before dragging and
during dragging. Now it also verifies that after dragging.
* Previously the test case uses the default value indicator shapes. Now
it uses a custom one that does not animate.

## 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], including [Features
we expect every widget to implement].
- [ ] I signed the [CLA].
- [ ] 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
[test-exempt].
- [ ] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [ ] All existing and new tests are passing.

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

**Note**: The Flutter team is currently trialing the use of [Gemini Code
Assist for
GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code).
Comments from the `gemini-code-assist` bot should not be taken as
authoritative feedback from the Flutter team. If you find its comments
useful you can update your code accordingly, but if you are unsure or
disagree with the feedback, please feel free to wait for a Flutter team
member's review for guidance on which automated comments should be
addressed.

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
Jyndigo pushed a commit to uesp/wkwebview_flutter that referenced this pull request Apr 15, 2026
…(#11345)

Manual roll Flutter from dd64978dfae1 to 82d96ef98a33 (89 revisions)

Manual roll requested by tarrinneal@google.com

flutter/flutter@dd64978...82d96ef

2026-03-24 116356835+AbdeMohlbi@users.noreply.github.com Fix RenderStack's documentation (flutter/flutter#183822)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from a465876e3156 to f4e59f82dc69 (4 revisions) (flutter/flutter#184082)
2026-03-24 30870216+gaaclarke@users.noreply.github.com Refactor: Removes Geometry field from ColorSourceContents (flutter/flutter#183952)
2026-03-24 katelovett@google.com Refactor layout dimensions (flutter/flutter#184066)
2026-03-24 abadasamuelosp@gmail.com feat: Add --base-href support to flutter run for web (flutter/flutter#182709)
2026-03-24 43498643+mkucharski17@users.noreply.github.com Add LeanCode and contributors to AUTHORS (flutter/flutter#182997)
2026-03-24 dacoharkes@google.com [tools] Make sure `assemble` has a pubspec as cwd (flutter/flutter#184067)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from bf4f2763b6e6 to a465876e3156 (5 revisions) (flutter/flutter#184068)
2026-03-24 evanwall@buffalo.edu fix gaussian blur getting clipped with negative scale (flutter/flutter#184037)
2026-03-24 34871572+gmackall@users.noreply.github.com Keep glyphs for variable fonts (flutter/flutter#183857)
2026-03-24 dacoharkes@google.com Mark `IconData` `final` and `@mustBeConst` (flutter/flutter#181345)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from 62841a512deb to bf4f2763b6e6 (1 revision) (flutter/flutter#184062)
2026-03-24 ahmedsameha1@gmail.com Use Color.a instead of Color.alpha to assert the opacity of the color… (flutter/flutter#184003)
2026-03-24 engine-flutter-autoroll@skia.org Roll Dart SDK from f504293598f2 to b08bd0a3ee39 (1 revision) (flutter/flutter#184054)
2026-03-24 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from x9x76ERXhrt0Q3zKf... to M3sjWggTQmP2AD4bS... (flutter/flutter#184053)
2026-03-24 engine-flutter-autoroll@skia.org Roll Dart SDK from 788e347194a6 to f504293598f2 (1 revision) (flutter/flutter#184048)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from fb6acef456ea to 62841a512deb (2 revisions) (flutter/flutter#184046)
2026-03-24 dkwingsmt@users.noreply.github.com [Slider] Remove value indicator painter when animation is dismissed (flutter/flutter#182991)
2026-03-24 engine-flutter-autoroll@skia.org Manual roll ICU from 7971660ba630 to ee5f27adc28b (1 revision) (flutter/flutter#184041)
2026-03-23 ishaquehassan@gmail.com Add scrollPadding property to DropdownMenu (flutter/flutter#183109)
2026-03-23 137456488+flutter-pub-roller-bot@users.noreply.github.com Roll pub packages (flutter/flutter#183895)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from c2b58922e37d to fb6acef456ea (1 revision) (flutter/flutter#184033)
2026-03-23 engine-flutter-autoroll@skia.org Roll Dart SDK from b172bea4f008 to 788e347194a6 (2 revisions) (flutter/flutter#184035)
2026-03-23 codefu@google.com chore: deflake Linux_android_emu android_display_cutout (flutter/flutter#183522)
2026-03-23 vs.ashoknarayan@gmail.com Add note about gclient sync network failures and workaround (flutter/flutter#183794)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from a81bf411a5cb to c2b58922e37d (3 revisions) (flutter/flutter#184016)
2026-03-23 1961493+harryterkelsen@users.noreply.github.com refactor(web): use positive logic and platform defaults for accessibility features (flutter/flutter#183907)
2026-03-23 jhy03261997@gmail.com [android][a11y] set "android.widget.ProgressBar" according to semantics role (flutter/flutter#183897)
2026-03-23 mr-peipei@web.de Add progress bar to artifact downloads (flutter/flutter#182836)
2026-03-23 116356835+AbdeMohlbi@users.noreply.github.com Add windows instruction to `Forcing Flutter Tools Snapshot Regeneration` (flutter/flutter#183977)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from 42a6eb1dc5c9 to a81bf411a5cb (3 revisions) (flutter/flutter#184007)
2026-03-23 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from q1xqlQPxq8a3JTA4P... to x9x76ERXhrt0Q3zKf... (flutter/flutter#184006)
2026-03-23 engine-flutter-autoroll@skia.org Roll Dart SDK from ef45f179526f to b172bea4f008 (1 revision) (flutter/flutter#184004)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from 964c3b33fd73 to 42a6eb1dc5c9 (1 revision) (flutter/flutter#184001)
2026-03-23 matt.kosarek@canonical.com Update the windowing docs per the latest wording found while doing Satellites (flutter/flutter#183748)
2026-03-22 48625061+muradhossin@users.noreply.github.com Add assert for mutually exclusive errorBuilder and errorText (flutter/flutter#183901)
2026-03-22 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from Yc7Ijp2ySjG841xha... to q1xqlQPxq8a3JTA4P... (flutter/flutter#183991)
2026-03-21 engine-flutter-autoroll@skia.org Roll Skia from 812822ad5caa to 964c3b33fd73 (1 revision) (flutter/flutter#183982)
2026-03-21 engine-flutter-autoroll@skia.org Roll Dart SDK from c831a55e2fcc to ef45f179526f (1 revision) (flutter/flutter#183973)
2026-03-21 engine-flutter-autoroll@skia.org Roll Skia from 569cc0475162 to 812822ad5caa (2 revisions) (flutter/flutter#183970)
2026-03-20 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from ilAIAVzu4xmeb078x... to Yc7Ijp2ySjG841xha... (flutter/flutter#183956)
2026-03-20 engine-flutter-autoroll@skia.org Roll Skia from 79a14289c60d to 569cc0475162 (3 revisions) (flutter/flutter#183954)
2026-03-20 engine-flutter-autoroll@skia.org Roll Dart SDK from c88a8008e93b to c831a55e2fcc (3 revisions) (flutter/flutter#183953)
2026-03-20 engine-flutter-autoroll@skia.org Roll Skia from 8d4c76b92050 to 79a14289c60d (4 revisions) (flutter/flutter#183949)
...
creatorpiyush pushed a commit to creatorpiyush/packages that referenced this pull request Jun 10, 2026
…lutter#11345)

Manual roll Flutter from dd64978dfae1 to 82d96ef98a33 (89 revisions)

Manual roll requested by tarrinneal@google.com

flutter/flutter@dd64978...82d96ef

2026-03-24 116356835+AbdeMohlbi@users.noreply.github.com Fix RenderStack's documentation (flutter/flutter#183822)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from a465876e3156 to f4e59f82dc69 (4 revisions) (flutter/flutter#184082)
2026-03-24 30870216+gaaclarke@users.noreply.github.com Refactor: Removes Geometry field from ColorSourceContents (flutter/flutter#183952)
2026-03-24 katelovett@google.com Refactor layout dimensions (flutter/flutter#184066)
2026-03-24 abadasamuelosp@gmail.com feat: Add --base-href support to flutter run for web (flutter/flutter#182709)
2026-03-24 43498643+mkucharski17@users.noreply.github.com Add LeanCode and contributors to AUTHORS (flutter/flutter#182997)
2026-03-24 dacoharkes@google.com [tools] Make sure `assemble` has a pubspec as cwd (flutter/flutter#184067)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from bf4f2763b6e6 to a465876e3156 (5 revisions) (flutter/flutter#184068)
2026-03-24 evanwall@buffalo.edu fix gaussian blur getting clipped with negative scale (flutter/flutter#184037)
2026-03-24 34871572+gmackall@users.noreply.github.com Keep glyphs for variable fonts (flutter/flutter#183857)
2026-03-24 dacoharkes@google.com Mark `IconData` `final` and `@mustBeConst` (flutter/flutter#181345)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from 62841a512deb to bf4f2763b6e6 (1 revision) (flutter/flutter#184062)
2026-03-24 ahmedsameha1@gmail.com Use Color.a instead of Color.alpha to assert the opacity of the color… (flutter/flutter#184003)
2026-03-24 engine-flutter-autoroll@skia.org Roll Dart SDK from f504293598f2 to b08bd0a3ee39 (1 revision) (flutter/flutter#184054)
2026-03-24 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from x9x76ERXhrt0Q3zKf... to M3sjWggTQmP2AD4bS... (flutter/flutter#184053)
2026-03-24 engine-flutter-autoroll@skia.org Roll Dart SDK from 788e347194a6 to f504293598f2 (1 revision) (flutter/flutter#184048)
2026-03-24 engine-flutter-autoroll@skia.org Roll Skia from fb6acef456ea to 62841a512deb (2 revisions) (flutter/flutter#184046)
2026-03-24 dkwingsmt@users.noreply.github.com [Slider] Remove value indicator painter when animation is dismissed (flutter/flutter#182991)
2026-03-24 engine-flutter-autoroll@skia.org Manual roll ICU from 7971660ba630 to ee5f27adc28b (1 revision) (flutter/flutter#184041)
2026-03-23 ishaquehassan@gmail.com Add scrollPadding property to DropdownMenu (flutter/flutter#183109)
2026-03-23 137456488+flutter-pub-roller-bot@users.noreply.github.com Roll pub packages (flutter/flutter#183895)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from c2b58922e37d to fb6acef456ea (1 revision) (flutter/flutter#184033)
2026-03-23 engine-flutter-autoroll@skia.org Roll Dart SDK from b172bea4f008 to 788e347194a6 (2 revisions) (flutter/flutter#184035)
2026-03-23 codefu@google.com chore: deflake Linux_android_emu android_display_cutout (flutter/flutter#183522)
2026-03-23 vs.ashoknarayan@gmail.com Add note about gclient sync network failures and workaround (flutter/flutter#183794)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from a81bf411a5cb to c2b58922e37d (3 revisions) (flutter/flutter#184016)
2026-03-23 1961493+harryterkelsen@users.noreply.github.com refactor(web): use positive logic and platform defaults for accessibility features (flutter/flutter#183907)
2026-03-23 jhy03261997@gmail.com [android][a11y] set "android.widget.ProgressBar" according to semantics role (flutter/flutter#183897)
2026-03-23 mr-peipei@web.de Add progress bar to artifact downloads (flutter/flutter#182836)
2026-03-23 116356835+AbdeMohlbi@users.noreply.github.com Add windows instruction to `Forcing Flutter Tools Snapshot Regeneration` (flutter/flutter#183977)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from 42a6eb1dc5c9 to a81bf411a5cb (3 revisions) (flutter/flutter#184007)
2026-03-23 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from q1xqlQPxq8a3JTA4P... to x9x76ERXhrt0Q3zKf... (flutter/flutter#184006)
2026-03-23 engine-flutter-autoroll@skia.org Roll Dart SDK from ef45f179526f to b172bea4f008 (1 revision) (flutter/flutter#184004)
2026-03-23 engine-flutter-autoroll@skia.org Roll Skia from 964c3b33fd73 to 42a6eb1dc5c9 (1 revision) (flutter/flutter#184001)
2026-03-23 matt.kosarek@canonical.com Update the windowing docs per the latest wording found while doing Satellites (flutter/flutter#183748)
2026-03-22 48625061+muradhossin@users.noreply.github.com Add assert for mutually exclusive errorBuilder and errorText (flutter/flutter#183901)
2026-03-22 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from Yc7Ijp2ySjG841xha... to q1xqlQPxq8a3JTA4P... (flutter/flutter#183991)
2026-03-21 engine-flutter-autoroll@skia.org Roll Skia from 812822ad5caa to 964c3b33fd73 (1 revision) (flutter/flutter#183982)
2026-03-21 engine-flutter-autoroll@skia.org Roll Dart SDK from c831a55e2fcc to ef45f179526f (1 revision) (flutter/flutter#183973)
2026-03-21 engine-flutter-autoroll@skia.org Roll Skia from 569cc0475162 to 812822ad5caa (2 revisions) (flutter/flutter#183970)
2026-03-20 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from ilAIAVzu4xmeb078x... to Yc7Ijp2ySjG841xha... (flutter/flutter#183956)
2026-03-20 engine-flutter-autoroll@skia.org Roll Skia from 79a14289c60d to 569cc0475162 (3 revisions) (flutter/flutter#183954)
2026-03-20 engine-flutter-autoroll@skia.org Roll Dart SDK from c88a8008e93b to c831a55e2fcc (3 revisions) (flutter/flutter#183953)
2026-03-20 engine-flutter-autoroll@skia.org Roll Skia from 8d4c76b92050 to 79a14289c60d (4 revisions) (flutter/flutter#183949)
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chunhtai pushed a commit to chunhtai/packages that referenced this pull request Jun 12, 2026
…143)

This PR refactors this slider test so that
* The test is split into multiple tests in a single group for better
readability.
* A single `expectValueIndicator` tests both the dragged state and the
released state, for better readability.
* The widget state is reset at the end of `expectValueIndicator` to
avoid state leak...
* ... which revealed a test case that has been written incorrectly.
* `ShowValueIndicator.alwaysVisible`'s doc is corrected to reflect its
actual behavior.

This PR is split from, and is a prerequisite of,
flutter/flutter#182991.

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responsibilities.
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we expect every widget to implement].
- [ ] I signed the [CLA].
- [ ] 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
[test-exempt].
- [ ] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [ ] All existing and new tests are passing.

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Assist for
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Slider Value Indicator remains visible when using SliderThemeData.ShowValueIndicator.onDrag

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