
Fixes https://github.com/flutter/flutter/issues/162592 <!-- Thanks for filing a pull request! Reviewers are typically assigned within a week of filing a request. To learn more about code review, see our documentation on Tree Hygiene: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md --> ### Comments error: ``` class NavigationDestination extends StatelessWidget { ... /// The text label that appears below the icon of this /// [NavigationDestination]. /// /// The accompanying [Text] widget will use /// [NavigationBarThemeData.labelTextStyle]. If this are null, the default /// text style would use [TextTheme.labelSmall] with [ColorScheme.onSurface]. final String label; ... } ``` `If this are null, the default text style would use [TextTheme.labelSmall]` is wrong. Actually, This is right in material2, but wrong in material3. I have dived into `_NavigationBarDefaultsM3`, I found this: ``` class _NavigationBarDefaultsM3 extends NavigationBarThemeData { ... @override MaterialStateProperty<TextStyle?>? get labelTextStyle { return MaterialStateProperty.resolveWith((Set<MaterialState> states) { final TextStyle style = _textTheme.labelMedium!; return style.apply( color: states.contains(MaterialState.disabled) ? _colors.onSurfaceVariant.withOpacity(0.38) : states.contains(MaterialState.selected) ? _colors.onSurface : _colors.onSurfaceVariant ); }); } ... } ``` **The default text style would use [TextTheme.labelMedium] in Material3.** ### Changes Just clarify the doc comments above.[test-exempt] ## 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]. <!-- 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 --------- Co-authored-by: Taha Tesser <tessertaha@gmail.com>
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