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add shorthands for scroll physics subclasses in framework - #193082
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This pull request introduces shorthand factory constructors to ScrollPhysics for its various subclasses, including AlwaysScrollableScrollPhysics and BouncingScrollPhysics, along with corresponding unit tests. The review feedback highlights that these new factory constructors are missing the optional parent parameter, which prevents developers from chaining and composing scroll physics configurations as intended.
navaronbracke
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Sep 21, 2026
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victorsanni
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I wonder if there are places in ScrollPhysics docs/examples we can migrate to use shorthands as well.
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victorsanni
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LGTM with final comments, but would want to get another sign-off on this.
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AbdeMohlbi
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LGTM but would like to get input from @loic-sharma here before merging. |
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| test('ScrollPhysics supports shorthands for AlwaysScrollableScrollPhysics', () { | ||
| ScrollPhysics physics = const .alwaysScrollable(); |
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Hm. Strictly speaking our style guide recommends against this specific dot shorthands pattern... but this is the easiest way to use dot shorthands here for testing purposes, so this seems like a good exception.
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…#13220) Manual roll Flutter from d03768eef055 to 4249ccbc18a3 (158 revisions) Manual roll requested by [email protected] flutter/flutter@d03768e...4249ccb 2026-10-12 [email protected] [AGP 9.1.0 Migration #8] Unify add-to-app module wiring on the variant API (flutter/flutter#193717) 2026-10-12 [email protected] [master] Update Flutter DEPS to Dart 5933cb486b4aef2f8cf6b9f89a5651c0d5b0955e (flutter/flutter#193982) 2026-10-12 [email protected] [Android] Fix use-after-free of SurfaceControl.Transaction in HCPP (flutter/flutter#192969) 2026-10-12 [email protected] [windows] Add OpenGL compositor tests against ANGLE at D3D11 feature level 10_0 (flutter/flutter#194114) 2026-10-12 [email protected] Fix HDR image packing for ios (flutter/flutter#192526) 2026-10-12 [email protected] Bump customer tests to pick up material_ui and cupertino_ui (flutter/flutter#194236) 2026-10-12 [email protected] Remove no-shuffle from text_field_test.dart (flutter/flutter#193550) 2026-10-12 [email protected] [web] Clip semantics DOM text labels to stop stealing taps (flutter/flutter#194011) 2026-10-12 [email protected] Roll Skia from 9b6ceba4728d to 17f6986c226c (6 revisions) (flutter/flutter#194232) 2026-10-12 [email protected] [web] Skip non-focusable containers in Focusable.focusAsRouteDefault (flutter/flutter#194138) 2026-10-12 [email protected] [web_paragraph] Honor kTextHeightNone in TextStyle and ParagraphStyle (flutter/flutter#193733) 2026-10-12 [email protected] Roll Skia from c88b49d1d6c7 to 9b6ceba4728d (4 revisions) (flutter/flutter#194226) 2026-10-12 [email protected] Migrate remaining test to macOS 26 (flutter/flutter#193825) 2026-10-12 [email protected] Roll Dart SDK from 047ca322aa9c to 221363557163 (1 revision) (flutter/flutter#194219) 2026-10-12 [email protected] [flutter_tools] Include dev_dependencies hooks for release integration tests (flutter/flutter#193436) 2026-10-12 [email protected] Roll Skia from d8afad1b1829 to c88b49d1d6c7 (1 revision) (flutter/flutter#194198) 2026-10-12 [email protected] Roll Skia from b23ddbff1265 to d8afad1b1829 (4 revisions) (flutter/flutter#194195) 2026-10-11 [email protected] Roll Skia from a168863e44ec to b23ddbff1265 (1 revision) (flutter/flutter#194185) 2026-10-11 [email protected] Roll Skia from 0c1d93abfa04 to a168863e44ec (1 revision) (flutter/flutter#194181) 2026-10-11 [email protected] iOS: Re-enable rendering on willEnterForeground (flutter/flutter#191350) 2026-10-11 [email protected] Roll Skia from 93c9d3ffda25 to 0c1d93abfa04 (1 revision) (flutter/flutter#194179) 2026-10-11 [email protected] Remove more instances of deprecated `withOpacity` (flutter/flutter#193559) 2026-10-11 [email protected] Fix another `parameter_assignments` warning (flutter/flutter#193669) 2026-10-11 [email protected] Roll Skia from 3136abef8f58 to 93c9d3ffda25 (1 revision) (flutter/flutter#194169) 2026-10-11 [email protected] [Impeller] Guard the sampler library caches with a mutex (flutter/flutter#193738) 2026-10-11 [email protected] Roll Dart SDK from e9c89888bcc1 to 047ca322aa9c (1 revision) (flutter/flutter#194157) 2026-10-10 [email protected] Roll Dart SDK from 787baa8aae78 to e9c89888bcc1 (2 revisions) (flutter/flutter#194141) 2026-10-10 [email protected] Fix OverlayPortal layout in shrink-wrapped overlays (flutter/flutter#193079) 2026-10-10 [email protected] Roll Skia from 353076e27b1c to 3136abef8f58 (1 revision) (flutter/flutter#194130) 2026-10-10 [email protected] Roll Dart SDK from 88a07589b1ff to 787baa8aae78 (1 revision) (flutter/flutter#194124) 2026-10-10 [email protected] Route windowing view lookups through WidgetsBinding (flutter/flutter#192666) 2026-10-10 [email protected] Roll Dart SDK from 2a06cab34715 to 88a07589b1ff (1 revision) (flutter/flutter#194117) 2026-10-10 [email protected] Roll Skia from f9043b7aa798 to 353076e27b1c (2 revisions) (flutter/flutter#194115) 2026-10-10 [email protected] Refactored PipelineLibraryGLES (flutter/flutter#193985) 2026-10-09 [email protected] add shorthands for scroll physics subclasses in framework (flutter/flutter#193082) 2026-10-09 [email protected] Roll Dart SDK from ba889e3cee8a to 2a06cab34715 (1 revision) (flutter/flutter#194105) 2026-10-09 [email protected] Roll Skia from 5ea03d8a53a6 to f9043b7aa798 (2 revisions) (flutter/flutter#194099) 2026-10-09 [email protected] Add docs for using bb and led with LUCI (flutter/flutter#193859) 2026-10-09 [email protected] Roll Skia from e329bb617820 to 5ea03d8a53a6 (5 revisions) (flutter/flutter#194087) 2026-10-09 [email protected] Roll Packages from 54706bd to d8d9e97 (5 revisions) (flutter/flutter#194080) 2026-10-09 [email protected] Move the Vulkan wrapped-texture helper out of the GPU surface (flutter/flutter#193001) 2026-10-09 [email protected] Roll Skia from 3e54bcf4c963 to e329bb617820 (1 revision) (flutter/flutter#194078) 2026-10-09 [email protected] Roll Dart SDK from 23f0308f9af8 to ba889e3cee8a (2 revisions) (flutter/flutter#194077) 2026-10-09 [email protected] Bump dartdoc to 9.0.11 (flutter/flutter#194076) ...
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…3082) This PR adds dot shorthands via redirecting factories for `ScrollPhysics`, so you can do ```dart ListView.builder( physics: const .alwaysScrollable(), ) ``` I did not add one for `CarouselPhysics`, since that belongs in material_ui, which prevents adding a shorthand for it. Fixes flutter#192989 *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 - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [AI contribution guidelines] and understand my responsibilities, or I am not using AI tools. - [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 in-code documentation (doc comments with `///`). - [x] If this PR introduces a new feature or capability, I created and linked a website documentation issue or PR in [flutter/website] (or verified none is needed). - [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]. If this change needs to override an active code freeze, provide a comment explaining why. The code freeze workflow can be overridden by code reviewers. See pinned issues for any active code freezes with guidance. **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 [AI contribution guidelines]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#ai-contribution-guidelines [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 [flutter/website]: https://github.com/flutter/website [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
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This PR adds dot shorthands via redirecting factories for
ScrollPhysics, so you can doI did not add one for
CarouselPhysics, since that belongs in material_ui, which prevents adding a shorthand for it.Fixes #192989
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
///).If you need help, consider asking for advice on the #hackers-new channel on Discord.
If this change needs to override an active code freeze, provide a comment explaining why. The code freeze workflow can be overridden by code reviewers. See pinned issues for any active code freezes with guidance.
Note: The Flutter team is currently trialing the use of Gemini Code Assist for GitHub. Comments from the
gemini-code-assistbot 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.