556 Commits

Author SHA1 Message Date
Loïc Sharma
384331e171
Migrate to list and builder Sliver convenience constructors (#173011)
In 2022, we introduced new convenience constructors like
`SliverList.builder` and `SliverList.list`. Unfortunately, LLMs like
Gemini seem to prefer the delegate pattern even when these convenience
constructors are usable. This updates Flutter's docs, code, and tests to
use these convenience constructors where possible. Hopefully this will
nudge LLMs to consider using the new APIs :)

I migrated 80% of the code by hand, and 20% using Gemini CLI. See
[go/loic-ai-log](http://goto.google.com/loic-ai-log) (Google internal)
for details.

There's a few locations that I wasn't able to migrate to the convenience
constructors due to missing APIs. I filed the following issues:

1. https://github.com/flutter/flutter/issues/173018
2. https://github.com/flutter/flutter/issues/173019

## Pre-launch Checklist

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2025-08-04 22:32:22 +00:00
Loïc Sharma
443f6760b1
Add a SliverList code sample (#172986)
This adds a code sample to `SliverList`. It shows off the
`SliverList.builder` convenience constructor. Hopefully this will guide
LLMs to using this instead of manually creating a delegate.

## Pre-launch Checklist

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2025-07-31 16:14:07 +00:00
Ricardo Dalarme
56d5389456
Migrate to null aware elements - Part 5 (#172418)
## Description

Continuing the work from @jamilsaadeh97 to replace verbose null checks
with modern
[null_aware_elements](https://dart.dev/tools/linter-rules/use_null_aware_elements)
syntax.

This PR cleans up the remaining files not covered in the previous parts,
making the code more concise.

## Related PRs

- https://github.com/flutter/flutter/pull/172198
- https://github.com/flutter/flutter/pull/172306
- https://github.com/flutter/flutter/pull/172307
- https://github.com/flutter/flutter/pull/172322

## 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.
2025-07-30 18:40:09 +00:00
Kishan Rathore
89b7248437
Feat: Add momentary varient of CupertinoSlidingSegmentedControl (#164262)
This PR introduces a new boolean flag, `isMomentary`, to the
`CupertinoSlidingSegmentedControl` widget.

When `isMomentary` is set to `true`, the segmented control behaves like
a momentary switch. Selecting a segment triggers its associated action
(e.g., via `onValueChanged`), but the segment doesn't stay visually
selected after the interaction ends. The control visually returns to its
previous state or a default state (often no segment selected).

When `isMomentary` is `false` (the default behavior), the control
maintains the selection state visually, highlighting the last chosen
segment.

**Motivation**

Currently, `CupertinoSlidingSegmentedControl` always maintains a
selected state. There are use cases where developers might want to use
the segmented control purely for triggering actions without persisting a
visual selection state, similar to how a `UISegmentedControl` can be
configured on iOS with `isMomentary = true`. This provides more
flexibility and aligns the Flutter widget closer to its native
counterpart's capabilities.

For example, this could be useful for triggering sorting actions, view
changes, or other immediate operations where maintaining a persistent
"selected" state isn't desired or meaningful.

**Related Issues**
fixes: #164077 

**Videos**
UISegmentedControl behaviour when `isMomentary` flag is set to true.

https://github.com/user-attachments/assets/84d00312-4530-4b7a-9696-142f60ad89c0

CupertinoSlidingSegmentedControl behaviour when `isMomentary` flag is
set to true.

https://github.com/user-attachments/assets/b308b4fa-e641-417a-a518-4e0908876eed

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
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we expect every widget to implement].
- [x] I signed the [CLA].
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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.
2025-07-21 20:59:34 +00:00
Tong Mu
1f0041eb96
Add dartpad example to RoundedSuperellipseBorder (#172185)
Now that Web supports squircles, we can finally add this dartpad example
to `RoundedSuperellipseBorder`'s doc.



https://github.com/user-attachments/assets/855be690-d9a1-45ec-a262-e0c38cf75b63


## Pre-launch Checklist

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- [ ] I added new tests to check the change I am making, or this PR is
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2025-07-16 03:52:06 +00:00
Justin McCandless
9b93519698
Route transition duration (#171109)
We need a robust way to get the duration of a route transition in tests,
so that tests can remain independent of the type of route transition and
its duration.

With this PR, this will be the canonical way to pump until a page
transition has finished:

```dart
testWidgets('example', (WidgetTester tester) async {
  final TransitionDurationObserver observer = TransitionDurationObserver();

  await tester.pumpWidget(
    MaterialApp(
      navigatorObservers: <NavigatorObserver>[observer],
      onGenerateRoute: (RouteSettings settings) { ... },
    ),
  );

  expect(find.text('Page 1'), findsOneWidget);
  expect(find.text('Page 2'), findsNothing);

  // Pump through the whole transition.
  await tester.tap(find.text('Next'));
  await observer.pumpPastTransition(tester);

  expect(find.text('Page 1'), findsNothing);
  expect(find.text('Page 2'), findsOneWidget);

  // Or, pump through part of a transition with the duration.
  await tester.tap(find.text('Back'));
  await tester.pump(observer.transitionDuration ~/ 2);

  expect(find.text('Page 1'), findsOneWidget);
  expect(find.text('Page 2'), findsOneWidget);
});
```

This was spun out of https://github.com/flutter/flutter/pull/165832,
where updating the default route transition and its duration broke tests
in the framework, in customer tests, and in Google tests.

FYI @chrisbobbe

---------

Co-authored-by: Jing Shao <87506348+jingshao-code@users.noreply.github.com>
2025-07-14 22:49:04 +00:00
Renzo Olivares
220477fc2c
SliverSemantics (#167300)
Fixes #166785 

## 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.

---------

Co-authored-by: Renzo Olivares <roliv@google.com>
2025-07-08 16:53:24 +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.

## Pre-launch Checklist

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we expect every widget to implement].
- [x] I signed the [CLA].
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- [ ] 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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2025-07-07 17:58:32 +00:00
Valentin Vignal
10298edaab
Add innerRadius to Radio (#171331)
Part of https://github.com/flutter/flutter/issues/168787

Add the ability to customize the inner radius of the `Radio` button


https://github.com/user-attachments/assets/234fffda-f42f-463f-bc97-284c160c86ef

<img width="274" alt="Screenshot 2025-06-28 at 6 23 11 PM"
src="https://github.com/user-attachments/assets/45a0525d-ff94-4fb3-85d3-0d2353b39e98"
/>

## Pre-launch Checklist

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2025-07-02 18:38:06 +00:00
Valentin Vignal
f83d842347
Add side to Radio (#171217)
Part of https://github.com/flutter/flutter/issues/168787

This PR adds `side` parameter to `Radio` to be able to control its color
and width.

This allows me to implement something like:


https://github.com/user-attachments/assets/8065df9b-4cea-48b6-ba34-21379a831a2e

In order to make it non breaking, when absent, it uses the `fillColor`


## Pre-launch Checklist

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2025-06-27 17:48:00 +00:00
davidhicks980
86767f6663
[widgets/raw_menu_anchor.3.dart] Replace arrow character with Icon in RawMenuAnchor submenu example (#171218)
Replaces the arrow character with an icon on the RawMenuAnchor animated
submenu example. Currently, submenu arrows render as gibberish.
Apologies to chunhtai since this is the second time I've done this.

<img width="500" alt="image"
src="https://github.com/user-attachments/assets/866220e3-3d09-4502-9aee-211dc333822d"
/>

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
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- [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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2025-06-27 07:29:28 +00:00
davidhicks980
dfadc91433
Add RawMenuAnchor animation callbacks (#167806)
Alternative to https://github.com/flutter/flutter/pull/163481,
https://github.com/flutter/flutter/pull/167537,
https://github.com/flutter/flutter/pull/163481 that uses callbacks.

@dkwingsmt - you inspired me to simplify the menu behavior. I didn't end
up using Actions, mainly because nested behavior was unwieldy and
capturing BuildContext has drawbacks. This uses a basic callback
mechanism to animate the menu open and closed. Check out the examples.

<hr />

### The problem
RawMenuAnchor synchronously shows or hides an overlay menu in response
to `MenuController.open()` and `MenuController.close`, respectively.
Because animations cannot be run on a hidden overlay, there currently is
no way for developers to add animations to RawMenuAnchor and its
subclasses (MenuAnchor, DropdownMenuButton, etc).

### The solution
This PR:
- Adds two callbacks -- `onOpenRequested` and `onCloseRequested` -- to
RawMenuAnchor.
- onOpenRequested is called with a position and a showOverlay callback,
which opens the menu when called.
- onCloseRequested is called with a hideOverlay callback, which hides
the menu when called.

When `MenuController.open()` and `MenuController.close()` are called,
onOpenRequested and onCloseRequested are invoked, respectively.

Precursor for https://github.com/flutter/flutter/pull/143416,
https://github.com/flutter/flutter/issues/135025,
https://github.com/flutter/flutter/pull/143712

## Demo


https://github.com/user-attachments/assets/bb14abca-af26-45fe-8d45-289b5d07dab2

```dart
// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// ignore_for_file: public_member_api_docs

import 'dart:ui' as ui;

import 'package:flutter/material.dart' hide MenuController, RawMenuAnchor, RawMenuOverlayInfo;

import 'raw_menu_anchor.dart';

/// Flutter code sample for a [RawMenuAnchor] that animates a simple menu using
/// [RawMenuAnchor.onOpenRequested] and [RawMenuAnchor.onCloseRequested].
void main() {
  runApp(const App());
}

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

  @override
  State<Menu> createState() => _MenuState();
}

class _MenuState extends State<Menu> with SingleTickerProviderStateMixin {
  late final AnimationController animationController;
  final MenuController menuController = MenuController();

  @override
  void initState() {
    super.initState();
    animationController = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 300),
    );
  }

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

  void _handleMenuOpenRequest(Offset? position, void Function({Offset? position}) showOverlay) {
    // Mount or reposition the menu before animating the menu open.
    showOverlay(position: position);

    if (animationController.isForwardOrCompleted) {
      // If the menu is already open or opening, the animation is already
      // running forward.
      return;
    }

    // Animate the menu into view. This will cancel the closing animation.
    animationController.forward();
  }

  void _handleMenuCloseRequest(VoidCallback hideOverlay) {
    if (!animationController.isForwardOrCompleted) {
      // If the menu is already closed or closing, do nothing.
      return;
    }

    // Animate the menu out of view.
    //
    // Be sure to use `whenComplete` so that the closing animation
    // can be interrupted by an opening animation.
    animationController.reverse().whenComplete(() {
      if (mounted) {
        // Hide the menu after the menu has closed
        hideOverlay();
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return RawMenuAnchor(
      controller: menuController,
      onOpenRequested: _handleMenuOpenRequest,
      onCloseRequested: _handleMenuCloseRequest,
      overlayBuilder: (BuildContext context, RawMenuOverlayInfo info) {
        final ui.Offset position = info.anchorRect.bottomLeft;
        return Positioned(
          top: position.dy + 5,
          left: position.dx,
          child: TapRegion(
            groupId: info.tapRegionGroupId,
            child: Material(
              color: ColorScheme.of(context).primaryContainer,
              shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
              elevation: 3,
              child: SizeTransition(
                sizeFactor: animationController,
                child: const SizedBox(
                  height: 200,
                  width: 150,
                  child: Center(child: Text('Howdy', textAlign: TextAlign.center)),
                ),
              ),
            ),
          ),
        );
      },
      builder: (BuildContext context, MenuController menuController, Widget? child) {
        return FilledButton(
          onPressed: () {
            if (animationController.isForwardOrCompleted) {
              menuController.close();
            } else {
              menuController.open();
            }
          },
          child: const Text('Toggle Menu'),
        );
      },
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue)),
      home: const Scaffold(body: Center(child: Menu())),
    );
  }
}

```

## 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 -->
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---------

Co-authored-by: Tong Mu <dkwingsmt@users.noreply.github.com>
2025-06-24 17:46:50 +00:00
Bruno Leroux
0adb0337e0
Deprecate DropdownButtonFormField "value" parameter in favor of "initialValue" (#170805)
## Description

This PR renames the DropdownButtonFormField constuctor parameter 'value'
to 'initialValue'.
See
https://github.com/flutter/flutter/pull/170050#issuecomment-2965486000
and
https://github.com/flutter/flutter/pull/170050#issuecomment-2971920009
for some context.

## Related Issue

Fixes [DropdownButtonFormField retains selected value even after setting
value to null](https://github.com/flutter/flutter/issues/169983#top)

## Tests

Adds 2 tests (one to validate the deprecated parameter can still be
used, one for the dart fix).
Updates many (renaming the confusing parameter).
2025-06-24 07:08:21 +00:00
Bruno Leroux
de3f804590
Normalize input decoration theme (#168981)
This PR is to make `InputDecorationTheme` conform to Flutter Material's
conventions for component themes:

- Added a `InputDecorationThemeData` class which defines overrides for
the defaults for `InputDecorator` properties.
- Added `InputDecorationTheme` constructor parameters:
`InputDecorationThemeData? data` and `Widget? child`. This is now the
preferred way to configure a `InputDecorationTheme`:

```dart
InputDecorationTheme(
	data: InputDecorationThemeData(
	    filled: true,
	    fillColor: Colors.amber,
	    ...
	  ),
  	child: const TextField()
)
```
These two properties are made nullable to not break existing apps which
has customized `ThemeData.inputDecorationTheme`.

- Update `InputDecorationTheme` to be an `InheritedTheme` subclass.
- Changed the type of component theme defaults from
`InputDecorationTheme` to `InputDecorationThemeData`.
- Changed the `InputDecorationTheme bottomAppBarTheme` property to
`Object? bottomAppBarTheme` in `ThemeData` and `ThemeData.copyWith()`
(Object? is used for the moment to minimize Google tests failure. A
follow-up PR will replace `Object?` with `InputDecorationThemeData`.
- Addresses the "theme normalization" sub-project within #91772.

A migration guide will be created on website repo.
2025-06-21 23:02:13 +00:00
Dipali Thakare
74ff8767a7
Add example for CupertinoExpansionTile transition modes (#170335)
This PR adds a combined example for the CupertinoExpansionTile widget,
demonstrating its usage with both available transition modes: fade and
scroll.

**A demo app showing two CupertinoExpansionTile widgets:**

- One using the default fade transition mode

- One using the scroll transition mode

A corresponding widget test verifying expand/collapse behavior for both
tiles

### Issue
Closes: #167317

## Tests

- Added widget tests to validate the expand and collapse behavior for
both transition modes




## Pre-launch Checklist

- [x] I read the [Contributor
Guide](https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview)
and followed the process outlined there for submitting PRs.
- [x] I read the [Tree
Hygiene](https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md)
wiki page, which explains my responsibilities.
- [x] I read and followed the [Flutter Style
Guide](https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md),
including [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).
- [x] I signed the [CLA](https://cla.developers.google.com/).
- [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](https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests).
- [x] I followed the [breaking change
policy](https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes)
and added [Data Driven
Fixes](https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md)
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](https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md).
2025-06-18 06:52:21 +00:00
chunhtai
d0058ec361
Adds radio group widget r2 (#168161)
<!--
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previous https://github.com/flutter/flutter/pull/167363

I have to factor out abstract class for RadioGroupRegistry and
RadioClient which are subclassed by RadioGroupState and RawRadio
respectively.

I have to do this because the RadioListTile that has 2 focusnode one for
listTile and one for the radio it builds. The issue is that RadioGroup's
keyboard shortcut has to tightly couples with the focus node of each
radio, but the radioListtile has to mute the radio's focusnode so it can
act as one control under keyboard shortcut

d582b35809/packages/flutter/lib/src/material/radio_list_tile.dart (L484)

Therefore i abstract the out the logic of RadioGroup so that another
widget can participate by implementing the interface.

fixes https://github.com/flutter/flutter/issues/113562

migration guide: https://github.com/flutter/website/pull/12080/files

## 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
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we expect every widget to implement].
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2025-06-02 19:03:51 +00:00
LongCatIsLooong
30fe6e7857
Wire up the system text scaler from PlatformDispatcher (#159999)
The equality of 2 `SystemTextScaler` is determined by the platform's
`textScaleFactor` scalar, because the `scale` method is always
monotonically increasing wrt `textScaleFactor`.
On Android the scalar reflects the user configuration in system
preference it seems:
https://developer.android.com/reference/android/content/res/Configuration#fontScale

## 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.
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If you need help, consider asking for advice on the #hackers-new channel
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<!-- Links -->
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2025-05-13 23:52:05 +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

## Pre-launch Checklist

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we expect every widget to implement].
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- [ ] I listed at least one issue that this PR fixes in the description
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- [ ] 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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2025-05-05 23:57:33 +00:00
Valentin Vignal
c6ceffa2e7
Add documentation examples to KeepAlive AutomaticKeepAlive and AutomaticKeepAliveClientMixin (#168137)
Part of https://github.com/flutter/flutter/issues/153860



https://github.com/user-attachments/assets/8fd233da-d1b1-417a-8854-8d16c3ad195b



https://github.com/user-attachments/assets/93197949-b962-483e-bb8f-02db5206674c



https://github.com/user-attachments/assets/ad4f4091-6ed3-4a13-bcf3-f8572ce87481



## Pre-launch Checklist

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we expect every widget to implement].
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- [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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2025-05-02 07:03:35 +00:00
Ramon Farizel
339f550081
Update CupertinoSliverNavigationBar Docs (#167148)
Update CupertinoSliverNavigationBar docs
https://github.com/flutter/flutter/issues/164137



## Pre-launch Checklist

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above.
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[Data Driven Fixes]:
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---------

Co-authored-by: Mitchell Goodwin <58190796+MitchellGoodwin@users.noreply.github.com>
2025-04-30 18:45:56 +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

- [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.
2025-04-24 16:48:20 +00:00
Ildeberto Vasconcelos
9f10f8d8cc
Remove redundant usematerial3 (#167337)
This PR removes redundant useMaterial3 since it is true by default.


Contribute to https://github.com/flutter/flutter/issues/162818

## 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].
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above.
- [x] All existing and new tests are passing.
2025-04-23 18:05:48 +00:00
Renzo Olivares
fc12bec5ec
Reland "SliverEnsureSemantics (#165589)" (#166889)
This reverts commit 2fc716d, and updates the cross-axis size of the
`_scrollOverflowElement` to be 1px (non-zero), so it is taken into
account by the scrollable elements scrollHeight.

Fixes #160217

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
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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].
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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.

---------

Co-authored-by: Renzo Olivares <roliv@google.com>
2025-04-11 00:51:26 +00:00
auto-submit[bot]
2fc716dbeb
Reverts "SliverEnsureSemantics (#165589)" (#166870)
<!-- start_original_pr_link -->
Reverts: flutter/flutter#165589
<!-- end_original_pr_link -->
<!-- start_initiating_author -->
Initiated by: Renzo-Olivares
<!-- end_initiating_author -->
<!-- start_revert_reason -->
Reason for reverting: breaking internal tests
<!-- end_revert_reason -->
<!-- start_original_pr_author -->
Original PR Author: Renzo-Olivares
<!-- end_original_pr_author -->

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

<!-- start_revert_body -->
This change reverts the following previous change:
Currently when using a `CustomScrollView`, screen readers cannot list or
move focus to elements that are outside the current Viewport and cache
extent because we do not create semantic nodes for these elements.

This change introduces `SliverEnsureSemantics` which ensures its sliver
child is included in the semantics tree, whether or not it is currently
visible on the screen or within the cache extent. This way screen
readers are aware the elements are there and can navigate to them /
create accessibility traversal menus with this information.
* Under the hood a new flag has been added to `RenderSliver` called
`ensureSemantics`. `RenderViewportBase` uses this in its
`visitChildrenForSemantics` to ensure a sliver is visited when creating
the semantics tree. Previously a sliver was not visited if it was not
visible or within the cache extent. `RenderViewportBase` also uses this
in `describeSemanticsClip` and `describeApproximatePaintClip` to ensure
a sliver child that wants to "ensure semantics" is not clipped out if it
is not currently visible in the viewport or outside the cache extent.
* `RenderSliverMultiBoxAdaptor.semanticBounds` now leverages its first
child as an anchor for assistive technologies to be able to reach it if
the Sliver is a child of `SliverEnsureSemantics`. If not it will still
be dropped from the semantics tree.
* `RenderProxySliver` now considers child overrides of `semanticBounds`.

On the engine side we move from using a joystick method to scroll with
`SemanticsAction.scrollUp` and `SemanticsAction.scrollDown` to using
`SemanticsAction.scrollToOffset` completely letting the browser drive
the scrolling with its current dom scroll position "scrollTop" or
"scrollLeft". This is possible by calculating the total quantity of
content under the scrollable and sizing the scroll element based on
that.

<details open><summary>Code sample</summary>

```dart
// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';

/// Flutter code sample for [SliverEnsureSemantics].

void main() => runApp(const SliverEnsureSemanticsExampleApp());

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

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(home: SliverEnsureSemanticsExample());
  }
}

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

  @override
  State<SliverEnsureSemanticsExample> createState() =>
      _SliverEnsureSemanticsExampleState();
}

class _SliverEnsureSemanticsExampleState
    extends State<SliverEnsureSemanticsExample> {
  @override
  Widget build(BuildContext context) {
    final ThemeData theme = Theme.of(context);
    return Scaffold(
      appBar: AppBar(
        backgroundColor: theme.colorScheme.inversePrimary,
        title: const Text('SliverEnsureSemantics Demo'),
      ),
      body: Center(
        child: CustomScrollView(
          semanticChildCount: 106,
          slivers: <Widget>[
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 0,
                  child: Card(
                    child: Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: <Widget>[
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Steps to reproduce',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                          const Text('Issue description'),
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Expected Results',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Actual Results',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Code Sample',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Screenshots',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Logs',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                        ],
                      ),
                    ),
                  ),
                ),
              ),
            ),
            SliverFixedExtentList(
              itemExtent: 44.0,
              delegate: SliverChildBuilderDelegate(
                (BuildContext context, int index) {
                  return Card(
                    child: Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Text('Item $index'),
                    ),
                  );
                },
                childCount: 50,
                semanticIndexOffset: 1,
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 51,
                  child: Card(
                    child: Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Semantics(
                        header: true,
                        child: const Text('Footer 1'),
                      ),
                    ),
                  ),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 52,
                  child: Card(
                    child: Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Semantics(
                        header: true,
                        child: const Text('Footer 2'),
                      ),
                    ),
                  ),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 53,
                  child: Semantics(link: true, child: const Text('Link #1')),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 54,
                  child: OverflowBar(
                    children: <Widget>[
                      TextButton(
                        onPressed: () {},
                        child: const Text('Button 1'),
                      ),
                      TextButton(
                        onPressed: () {},
                        child: const Text('Button 2'),
                      ),
                    ],
                  ),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 55,
                  child: Semantics(link: true, child: const Text('Link #2')),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverSemanticsList(
                sliver: SliverFixedExtentList(
                  itemExtent: 44.0,
                  delegate: SliverChildBuilderDelegate(
                    (BuildContext context, int index) {
                      return Semantics(
                        role: SemanticsRole.listItem,
                        child: Card(
                          child: Padding(
                            padding: const EdgeInsets.all(8.0),
                            child: Text('Second List Item $index'),
                          ),
                        ),
                      );
                    },
                    childCount: 50,
                    semanticIndexOffset: 56,
                  ),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 107,
                  child: Semantics(link: true, child: const Text('Link #3')),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

// A sliver that assigns the role of SemanticsRole.list to its sliver child.
class SliverSemanticsList extends SingleChildRenderObjectWidget {
  const SliverSemanticsList({super.key, required Widget sliver})
    : super(child: sliver);

  @override
  RenderSliverSemanticsList createRenderObject(BuildContext context) =>
      RenderSliverSemanticsList();
}

class RenderSliverSemanticsList extends RenderProxySliver {
  @override
  void describeSemanticsConfiguration(SemanticsConfiguration config) {
    super.describeSemanticsConfiguration(config);
    config.role = SemanticsRole.list;
  }
}
```
</details>

Fixes: #160217

## 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>
2025-04-09 18:27:48 +00:00
Renzo Olivares
3fa9b38705
SliverEnsureSemantics (#165589)
Currently when using a `CustomScrollView`, screen readers cannot list or
move focus to elements that are outside the current Viewport and cache
extent because we do not create semantic nodes for these elements.

This change introduces `SliverEnsureSemantics` which ensures its sliver
child is included in the semantics tree, whether or not it is currently
visible on the screen or within the cache extent. This way screen
readers are aware the elements are there and can navigate to them /
create accessibility traversal menus with this information.
* Under the hood a new flag has been added to `RenderSliver` called
`ensureSemantics`. `RenderViewportBase` uses this in its
`visitChildrenForSemantics` to ensure a sliver is visited when creating
the semantics tree. Previously a sliver was not visited if it was not
visible or within the cache extent. `RenderViewportBase` also uses this
in `describeSemanticsClip` and `describeApproximatePaintClip` to ensure
a sliver child that wants to "ensure semantics" is not clipped out if it
is not currently visible in the viewport or outside the cache extent.
* `RenderSliverMultiBoxAdaptor.semanticBounds` now leverages its first
child as an anchor for assistive technologies to be able to reach it if
the Sliver is a child of `SliverEnsureSemantics`. If not it will still
be dropped from the semantics tree.
* `RenderProxySliver` now considers child overrides of `semanticBounds`.

On the engine side we move from using a joystick method to scroll with
`SemanticsAction.scrollUp` and `SemanticsAction.scrollDown` to using
`SemanticsAction.scrollToOffset` completely letting the browser drive
the scrolling with its current dom scroll position "scrollTop" or
"scrollLeft". This is possible by calculating the total quantity of
content under the scrollable and sizing the scroll element based on
that.

<details open><summary>Code sample</summary>

```dart
// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';

/// Flutter code sample for [SliverEnsureSemantics].

void main() => runApp(const SliverEnsureSemanticsExampleApp());

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

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(home: SliverEnsureSemanticsExample());
  }
}

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

  @override
  State<SliverEnsureSemanticsExample> createState() =>
      _SliverEnsureSemanticsExampleState();
}

class _SliverEnsureSemanticsExampleState
    extends State<SliverEnsureSemanticsExample> {
  @override
  Widget build(BuildContext context) {
    final ThemeData theme = Theme.of(context);
    return Scaffold(
      appBar: AppBar(
        backgroundColor: theme.colorScheme.inversePrimary,
        title: const Text('SliverEnsureSemantics Demo'),
      ),
      body: Center(
        child: CustomScrollView(
          semanticChildCount: 106,
          slivers: <Widget>[
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 0,
                  child: Card(
                    child: Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: <Widget>[
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Steps to reproduce',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                          const Text('Issue description'),
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Expected Results',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Actual Results',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Code Sample',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Screenshots',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                          Semantics(
                            header: true,
                            headingLevel: 3,
                            child: Text(
                              'Logs',
                              style: theme.textTheme.headlineSmall,
                            ),
                          ),
                        ],
                      ),
                    ),
                  ),
                ),
              ),
            ),
            SliverFixedExtentList(
              itemExtent: 44.0,
              delegate: SliverChildBuilderDelegate(
                (BuildContext context, int index) {
                  return Card(
                    child: Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Text('Item $index'),
                    ),
                  );
                },
                childCount: 50,
                semanticIndexOffset: 1,
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 51,
                  child: Card(
                    child: Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Semantics(
                        header: true,
                        child: const Text('Footer 1'),
                      ),
                    ),
                  ),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 52,
                  child: Card(
                    child: Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Semantics(
                        header: true,
                        child: const Text('Footer 2'),
                      ),
                    ),
                  ),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 53,
                  child: Semantics(link: true, child: const Text('Link #1')),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 54,
                  child: OverflowBar(
                    children: <Widget>[
                      TextButton(
                        onPressed: () {},
                        child: const Text('Button 1'),
                      ),
                      TextButton(
                        onPressed: () {},
                        child: const Text('Button 2'),
                      ),
                    ],
                  ),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 55,
                  child: Semantics(link: true, child: const Text('Link #2')),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverSemanticsList(
                sliver: SliverFixedExtentList(
                  itemExtent: 44.0,
                  delegate: SliverChildBuilderDelegate(
                    (BuildContext context, int index) {
                      return Semantics(
                        role: SemanticsRole.listItem,
                        child: Card(
                          child: Padding(
                            padding: const EdgeInsets.all(8.0),
                            child: Text('Second List Item $index'),
                          ),
                        ),
                      );
                    },
                    childCount: 50,
                    semanticIndexOffset: 56,
                  ),
                ),
              ),
            ),
            SliverEnsureSemantics(
              sliver: SliverToBoxAdapter(
                child: IndexedSemantics(
                  index: 107,
                  child: Semantics(link: true, child: const Text('Link #3')),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

// A sliver that assigns the role of SemanticsRole.list to its sliver child.
class SliverSemanticsList extends SingleChildRenderObjectWidget {
  const SliverSemanticsList({super.key, required Widget sliver})
    : super(child: sliver);

  @override
  RenderSliverSemanticsList createRenderObject(BuildContext context) =>
      RenderSliverSemanticsList();
}

class RenderSliverSemanticsList extends RenderProxySliver {
  @override
  void describeSemanticsConfiguration(SemanticsConfiguration config) {
    super.describeSemanticsConfiguration(config);
    config.role = SemanticsRole.list;
  }
}
```
</details>

Fixes: #160217

## 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.

---------

Co-authored-by: Renzo Olivares <roliv@google.com>
2025-04-09 01:58:11 +00:00
Kamil Szczęk
9d2b6da8e5
feat(Tooltip): replace the height parameter with constraints (#163314)
Introduce a new `constraints` parameter, which constrains the size of
the tooltip's message and deprecate the now obsolete `height` parameter.
Do the same for the theme data, while also making some minor changes to
the docs to clear up some misconceptions about which properties apply to
the tooltip's message and which to the tooltip's child.

To make the transition from `height` to `constraints` as easy as
possible for our users, introduce fix data to do this replacement
automatically in the IDE.

Closes: #163313

## 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
2025-03-17 17:00:05 +00:00
Sangam Shrestha
d261411b4c
Remove redundant useMaterial3: true (#163376)
<!--
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Reviewers are typically assigned within a week of filing a request.
To learn more about code review, see our documentation on Tree Hygiene:
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This PR removes redundant useMaterial3: true as described in
https://github.com/flutter/flutter/issues/162818

*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.*

- https://github.com/flutter/flutter/issues/162818

## 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.
- [ ] 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: Qun Cheng <36861262+QuncCccccc@users.noreply.github.com>
2025-03-14 17:50:20 +00:00
Kate Lovett
df676dc6e7
Add onHover and onFocusChange callbacks for TabBar (#164816)
Fixes https://github.com/flutter/flutter/issues/159444
Fixes https://github.com/flutter/flutter/issues/146089

This adds callbacks to TabBar for onHover and onFocusChange.
They pipe through to the underlying Inkwell widget that is wrapped
around each Tab of the TabBar during build.

#### Alternatives

- I did consider adding these callbacks to Tab instead, but felt that
going through TabBar would be better. If implemented in Tab, the user
would need to define callbacks for each tab. This PR makes it so there
is only need for one callback, and the associated Tab index is provided.
Also, since the Inkwell is applied in the TabBar, it's kludgy to have to
extract that from the Tabs _in_ TabBar later to pass on to the Inkwell.
👃
- Digging in to the requests in the linked issues, the user wants to
change various stylings in response to these events.
WidgetStateProperties were considered, but there are so many potential
styling properties that going this route would require greatly
increasing the API surface here. Tab.child allows the user to provide
whatever widget they would like to have as the content. Being able to
modify Tab.child in response to these events is a better way go instead
of exposing a ton of different properties.

## 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]:
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[Tree Hygiene]:
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[CLA]: https://cla.developers.google.com/
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[breaking change policy]:
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[Discord]:
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[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
2025-03-13 01:32:05 +00:00
Ashish Beck
9af4d746df
Added semanticsIdentifier to Text Widgets (#163843)
This PR aims to add `semanticsIdentifier` to `Text` and some of its
internal objects to pass the semantics information for adding identifier
to the semantics nodes

From the issue filed at #163842, the following is a description of the
problem.

The [semantics
identifier](https://api.flutter.dev/flutter/semantics/SemanticsData/identifier.html)
helps in uniquely identifying elements using UI automation tools like
Appium, UIAutomator and XCUITests by setting identifiers that the screen
readers cannot see but the said tools can. This is especially useful
when working with a multi-lingual or multi-tenant app, where the element
IDs need to be unique but the content can be different. The `Semantics`
widget already has support for declaring it. However, the `Text` and
`Text.rich` variants only support setting `semanticsLabel` without
explicitly setting the identifiers. The widgets themselves can be
wrapped with a `Semantics` widget but it still does not cater for a rich
text that can have multiple text spans, each containing unique lables
and identifiers, and optionally gesture detectors for handling links.

Consider the following UI for two different tenants:
<img width="229" alt="Image"
src="https://github.com/user-attachments/assets/e8a24588-d94d-42fc-ba6c-ce39959207ae"
/>

Here, both the tenants utilise different strings to convey the same
message. The structure of the message stays the same so the identifiers
help in unifying the element identification process across the tenant
apps in the automation tools without having to write another script for
every other tenant.
Without the identifiers, the automation scripts require a rewrite per
tenant to be able to successfully locate the element and even tap on the
hyperlink.

# With PR Changes
## Appium Views
For the given sample code,
<details><summary>Text.rich Sample</summary>

```dart
Text.rich(
  TextSpan(
    text: 'This text contains both identifier and label.',
    semanticsLabel: 'Custom label',
    semanticsIdentifier: 'Custom identifier',
    style: customStyle1,
    children: <TextSpan>[
      TextSpan(
        text: ' While this one contains only label',
        semanticsLabel: 'Hello world',
        style: customStyle2,
      ),
      const TextSpan(
        text: ' and this contains only identifier,',
        semanticsIdentifier: 'Hello to the automation tool',
      ),
      TextSpan(
        text: ' this text contains neither identifier nor label.',
        style: customStyle2,
      ),
    ],
  ),
),
```
</details>
we have the following results with and without the PR code changes:

### With Identifier

![image](https://github.com/user-attachments/assets/abad3b36-61a5-41d9-b269-9977ac6d26e7)
### Without Identifier Changes

![image](https://github.com/user-attachments/assets/91d01be9-d39c-4c65-9251-570284108bfd)


## Semantics Tree Dump
The followings are the semantics tree dump for both the cases
<details><summary>With Identifier</summary>

```
I/flutter ( 8185): SemanticsNode#0
I/flutter ( 8185):  │ Rect.fromLTRB(0.0, 0.0, 1080.0, 2154.0)
I/flutter ( 8185):  │
I/flutter ( 8185):  └─SemanticsNode#1
I/flutter ( 8185):    │ Rect.fromLTRB(0.0, 0.0, 392.7, 783.3) scaled by 2.8x
I/flutter ( 8185):    │ textDirection: ltr
I/flutter ( 8185):    │
I/flutter ( 8185):    └─SemanticsNode#2
I/flutter ( 8185):      │ Rect.fromLTRB(0.0, 0.0, 392.7, 783.3)
I/flutter ( 8185):      │ sortKey: OrdinalSortKey#9e46a(order: 0.0)
I/flutter ( 8185):      │
I/flutter ( 8185):      └─SemanticsNode#3
I/flutter ( 8185):        │ Rect.fromLTRB(0.0, 0.0, 392.7, 783.3)
I/flutter ( 8185):        │ flags: scopesRoute
I/flutter ( 8185):        │
I/flutter ( 8185):        ├─SemanticsNode#4
I/flutter ( 8185):        │   Rect.fromLTRB(16.0, 40.0, 376.7, 88.0)
I/flutter ( 8185):        │   label: "Demonstration of automation tools support in Semantics
I/flutter ( 8185):        │     for Text and RichText"
I/flutter ( 8185):        │   textDirection: ltr
I/flutter ( 8185):        │
I/flutter ( 8185):        ├─SemanticsNode#5
I/flutter ( 8185):        │   Rect.fromLTRB(16.0, 104.0, 376.7, 204.0)
I/flutter ( 8185):        │   label: "The identifier property in Semantics widget is used for
I/flutter ( 8185):        │     UI testing with tools that work by querying the native
I/flutter ( 8185):        │     accessibility, like UIAutomator, XCUITest, or Appium. It can be
I/flutter ( 8185):        │     matched with CommonFinders.bySemanticsIdentifier."
I/flutter ( 8185):        │   textDirection: ltr
I/flutter ( 8185):        │
I/flutter ( 8185):        ├─SemanticsNode#6
I/flutter ( 8185):        │   Rect.fromLTRB(16.0, 220.0, 121.9, 244.0)
I/flutter ( 8185):        │   label: "Text Example:"
I/flutter ( 8185):        │   textDirection: ltr
I/flutter ( 8185):        │
I/flutter ( 8185):        ├─SemanticsNode#7
I/flutter ( 8185):        │   Rect.fromLTRB(16.0, 244.0, 376.7, 304.0)
I/flutter ( 8185):        │   identifier: "This is a custom identifier that only the automation
I/flutter ( 8185):        │     tools are able to see"
I/flutter ( 8185):        │   label: "This is a custom label"
I/flutter ( 8185):        │   textDirection: ltr
I/flutter ( 8185):        │
I/flutter ( 8185):        ├─SemanticsNode#8
I/flutter ( 8185):        │   Rect.fromLTRB(16.0, 320.0, 155.1, 344.0)
I/flutter ( 8185):        │   label: "Text.rich Example:"
I/flutter ( 8185):        │   textDirection: ltr
I/flutter ( 8185):        │
I/flutter ( 8185):        ├─SemanticsNode#9
I/flutter ( 8185):        │ │ Rect.fromLTRB(16.0, 344.0, 376.7, 400.0)
I/flutter ( 8185):        │ │
I/flutter ( 8185):        │ ├─SemanticsNode#10
I/flutter ( 8185):        │ │   Rect.fromLTRB(-4.0, -3.0, 280.0, 23.0)
I/flutter ( 8185):        │ │   identifier: "Custom identifier"
I/flutter ( 8185):        │ │   label: "Custom label"
I/flutter ( 8185):        │ │   textDirection: ltr
I/flutter ( 8185):        │ │   sortKey: OrdinalSortKey#06bc7(order: 0.0)
I/flutter ( 8185):        │ │
I/flutter ( 8185):        │ ├─SemanticsNode#11
I/flutter ( 8185):        │ │   Rect.fromLTRB(-4.0, -1.0, 345.0, 42.0)
I/flutter ( 8185):        │ │   label: "Hello world"
I/flutter ( 8185):        │ │   textDirection: ltr
I/flutter ( 8185):        │ │   sortKey: OrdinalSortKey#32a12(order: 1.0)
I/flutter ( 8185):        │ │
I/flutter ( 8185):        │ ├─SemanticsNode#12
I/flutter ( 8185):        │ │   Rect.fromLTRB(130.0, 17.0, 348.0, 43.0)
I/flutter ( 8185):        │ │   identifier: "Hello to the automation tool"
I/flutter ( 8185):        │ │   label: " and this contains only identifier,"
I/flutter ( 8185):        │ │   textDirection: ltr
I/flutter ( 8185):        │ │   sortKey: OrdinalSortKey#49d25(order: 2.0)
I/flutter ( 8185):        │ │
I/flutter ( 8185):        │ └─SemanticsNode#13
I/flutter ( 8185):        │     Rect.fromLTRB(-4.0, 19.0, 351.0, 60.0)
I/flutter ( 8185):        │     label: " this text contains neither identifier nor label."
I/flutter ( 8185):        │     textDirection: ltr
I/flutter ( 8185):        │     sortKey: OrdinalSortKey#f3624(order: 3.0)
I/flutter ( 8185):        │
I/flutter ( 8185):        ├─SemanticsNode#14
I/flutter ( 8185):        │   Rect.fromLTRB(16.0, 416.0, 181.0, 440.0)
I/flutter ( 8185):        │   label: "Multi-tenant Example:"
I/flutter ( 8185):        │   textDirection: ltr
I/flutter ( 8185):        │
I/flutter ( 8185):        ├─SemanticsNode#15
I/flutter ( 8185):        │ │ Rect.fromLTRB(108.3, 440.0, 284.5, 480.0)
I/flutter ( 8185):        │ │
I/flutter ( 8185):        │ ├─SemanticsNode#16
I/flutter ( 8185):        │ │   Rect.fromLTRB(-1.0, -3.0, 115.0, 23.0)
I/flutter ( 8185):        │ │   identifier: "please_open"
I/flutter ( 8185):        │ │   label: "Please open the "
I/flutter ( 8185):        │ │   textDirection: ltr
I/flutter ( 8185):        │ │   sortKey: OrdinalSortKey#ea831(order: 0.0)
I/flutter ( 8185):        │ │
I/flutter ( 8185):        │ ├─SemanticsNode#17
I/flutter ( 8185):        │ │   Rect.fromLTRB(106.0, -3.0, 177.0, 23.0)
I/flutter ( 8185):        │ │   identifier: "product_name"
I/flutter ( 8185):        │ │   label: "product 1"
I/flutter ( 8185):        │ │   textDirection: ltr
I/flutter ( 8185):        │ │   sortKey: OrdinalSortKey#589fe(order: 1.0)
I/flutter ( 8185):        │ │
I/flutter ( 8185):        │ ├─SemanticsNode#18
I/flutter ( 8185):        │ │   Rect.fromLTRB(-4.0, -3.0, 177.0, 43.0)
I/flutter ( 8185):        │ │   identifier: "to_use_app"
I/flutter ( 8185):        │ │   label:
I/flutter ( 8185):        │ │     "
I/flutter ( 8185):        │ │     to use this app."
I/flutter ( 8185):        │ │   textDirection: ltr
I/flutter ( 8185):        │ │   sortKey: OrdinalSortKey#c2762(order: 2.0)
I/flutter ( 8185):        │ │
I/flutter ( 8185):        │ └─SemanticsNode#19
I/flutter ( 8185):        │     Rect.fromLTRB(95.0, 17.0, 181.0, 43.0)
I/flutter ( 8185):        │     actions: tap
I/flutter ( 8185):        │     flags: isLink
I/flutter ( 8185):        │     identifier: "learn_more_link"
I/flutter ( 8185):        │     label: " Learn more"
I/flutter ( 8185):        │     textDirection: ltr
I/flutter ( 8185):        │     sortKey: OrdinalSortKey#7d560(order: 3.0)
I/flutter ( 8185):        │
I/flutter ( 8185):        └─SemanticsNode#20
I/flutter ( 8185):          │ Rect.fromLTRB(97.0, 496.0, 295.7, 536.0)
I/flutter ( 8185):          │
I/flutter ( 8185):          ├─SemanticsNode#21
I/flutter ( 8185):          │   Rect.fromLTRB(11.0, -3.0, 127.0, 23.0)
I/flutter ( 8185):          │   identifier: "please_open"
I/flutter ( 8185):          │   label: "Please open the "
I/flutter ( 8185):          │   textDirection: ltr
I/flutter ( 8185):          │   sortKey: OrdinalSortKey#7bb57(order: 0.0)
I/flutter ( 8185):          │
I/flutter ( 8185):          ├─SemanticsNode#22
I/flutter ( 8185):          │   Rect.fromLTRB(118.0, -3.0, 188.0, 23.0)
I/flutter ( 8185):          │   identifier: "product_name"
I/flutter ( 8185):          │   label: "product 2"
I/flutter ( 8185):          │   textDirection: ltr
I/flutter ( 8185):          │   sortKey: OrdinalSortKey#6c7c6(order: 1.0)
I/flutter ( 8185):          │
I/flutter ( 8185):          ├─SemanticsNode#23
I/flutter ( 8185):          │   Rect.fromLTRB(-4.0, -3.0, 188.0, 43.0)
I/flutter ( 8185):          │   identifier: "to_use_app"
I/flutter ( 8185):          │   label:
I/flutter ( 8185):          │     "
I/flutter ( 8185):          │     to access this app."
I/flutter ( 8185):          │   textDirection: ltr
I/flutter ( 8185):          │   sortKey: OrdinalSortKey#1e8e7(order: 2.0)
I/flutter ( 8185):          │
I/flutter ( 8185):          └─SemanticsNode#24
I/flutter ( 8185):              Rect.fromLTRB(117.0, 17.0, 203.0, 43.0)
I/flutter ( 8185):              actions: tap
I/flutter ( 8185):              flags: isLink
I/flutter ( 8185):              identifier: "learn_more_link"
I/flutter ( 8185):              label: " Find out more"
I/flutter ( 8185):              textDirection: ltr
I/flutter ( 8185):              sortKey: OrdinalSortKey#db7e6(order: 3.0)
```

</details>
<details><summary>Without Identifier Changes</summary>

```
I/flutter (18659): SemanticsNode#0
I/flutter (18659):  │ Rect.fromLTRB(0.0, 0.0, 1080.0, 2154.0)
I/flutter (18659):  │
I/flutter (18659):  └─SemanticsNode#1
I/flutter (18659):    │ Rect.fromLTRB(0.0, 0.0, 392.7, 783.3) scaled by 2.8x
I/flutter (18659):    │ textDirection: ltr
I/flutter (18659):    │
I/flutter (18659):    └─SemanticsNode#2
I/flutter (18659):      │ Rect.fromLTRB(0.0, 0.0, 392.7, 783.3)
I/flutter (18659):      │ sortKey: OrdinalSortKey#102d4(order: 0.0)
I/flutter (18659):      │
I/flutter (18659):      └─SemanticsNode#3
I/flutter (18659):        │ Rect.fromLTRB(0.0, 0.0, 392.7, 783.3)
I/flutter (18659):        │ flags: scopesRoute
I/flutter (18659):        │
I/flutter (18659):        ├─SemanticsNode#4
I/flutter (18659):        │   Rect.fromLTRB(16.0, 40.0, 376.7, 88.0)
I/flutter (18659):        │   label: "Demonstration of automation tools support in Semantics
I/flutter (18659):        │     for Text and RichText"
I/flutter (18659):        │   textDirection: ltr
I/flutter (18659):        │
I/flutter (18659):        ├─SemanticsNode#5
I/flutter (18659):        │   Rect.fromLTRB(16.0, 104.0, 376.7, 204.0)
I/flutter (18659):        │   label: "The identifier property in Semantics widget is used for
I/flutter (18659):        │     UI testing with tools that work by querying the native
I/flutter (18659):        │     accessibility, like UIAutomator, XCUITest, or Appium. It can be
I/flutter (18659):        │     matched with CommonFinders.bySemanticsIdentifier."
I/flutter (18659):        │   textDirection: ltr
I/flutter (18659):        │
I/flutter (18659):        ├─SemanticsNode#6
I/flutter (18659):        │   Rect.fromLTRB(16.0, 220.0, 121.9, 244.0)
I/flutter (18659):        │   label: "Text Example:"
I/flutter (18659):        │   textDirection: ltr
I/flutter (18659):        │
I/flutter (18659):        ├─SemanticsNode#7
I/flutter (18659):        │   Rect.fromLTRB(16.0, 244.0, 376.7, 304.0)
I/flutter (18659):        │   label: "This is a custom label"
I/flutter (18659):        │   textDirection: ltr
I/flutter (18659):        │
I/flutter (18659):        ├─SemanticsNode#8
I/flutter (18659):        │   Rect.fromLTRB(16.0, 320.0, 155.1, 344.0)
I/flutter (18659):        │   label: "Text.rich Example:"
I/flutter (18659):        │   textDirection: ltr
I/flutter (18659):        │
I/flutter (18659):        ├─SemanticsNode#9
I/flutter (18659):        │   Rect.fromLTRB(16.0, 344.0, 376.7, 400.0)
I/flutter (18659):        │   label: "Custom labelHello world and this contains only
I/flutter (18659):        │     identifier, this text contains neither identifier nor label."
I/flutter (18659):        │   textDirection: ltr
I/flutter (18659):        │
I/flutter (18659):        ├─SemanticsNode#10
I/flutter (18659):        │   Rect.fromLTRB(16.0, 416.0, 181.0, 440.0)
I/flutter (18659):        │   label: "Multi-tenant Example:"
I/flutter (18659):        │   textDirection: ltr
I/flutter (18659):        │
I/flutter (18659):        ├─SemanticsNode#11
I/flutter (18659):        │ │ Rect.fromLTRB(108.3, 456.0, 284.5, 496.0)
I/flutter (18659):        │ │
I/flutter (18659):        │ ├─SemanticsNode#12
I/flutter (18659):        │ │   Rect.fromLTRB(-4.0, -3.0, 177.0, 43.0)
I/flutter (18659):        │ │   label:
I/flutter (18659):        │ │     "Please open the product 1
I/flutter (18659):        │ │     to use this app."
I/flutter (18659):        │ │   textDirection: ltr
I/flutter (18659):        │ │   sortKey: OrdinalSortKey#493fc(order: 0.0)
I/flutter (18659):        │ │
I/flutter (18659):        │ └─SemanticsNode#13
I/flutter (18659):        │     Rect.fromLTRB(95.0, 17.0, 181.0, 43.0)
I/flutter (18659):        │     actions: tap
I/flutter (18659):        │     flags: isLink
I/flutter (18659):        │     label: " Learn more"
I/flutter (18659):        │     textDirection: ltr
I/flutter (18659):        │     sortKey: OrdinalSortKey#587bf(order: 1.0)
I/flutter (18659):        │
I/flutter (18659):        └─SemanticsNode#14
I/flutter (18659):          │ Rect.fromLTRB(88.9, 512.0, 303.8, 552.0)
I/flutter (18659):          │
I/flutter (18659):          ├─SemanticsNode#15
I/flutter (18659):          │   Rect.fromLTRB(-4.0, -3.0, 196.0, 43.0)
I/flutter (18659):          │   label:
I/flutter (18659):          │     "Please open the product 2
I/flutter (18659):          │     to access this app."
I/flutter (18659):          │   textDirection: ltr
I/flutter (18659):          │   sortKey: OrdinalSortKey#69083(order: 0.0)
I/flutter (18659):          │
I/flutter (18659):          └─SemanticsNode#16
I/flutter (18659):              Rect.fromLTRB(117.0, 17.0, 219.0, 43.0)
I/flutter (18659):              actions: tap
I/flutter (18659):              flags: isLink
I/flutter (18659):              label: " Find out more"
I/flutter (18659):              textDirection: ltr
I/flutter (18659):              sortKey: OrdinalSortKey#ed706(order: 1.0)
```

</details>


fixes https://github.com/flutter/flutter/issues/163842

---------

Co-authored-by: chunhtai <47866232+chunhtai@users.noreply.github.com>
2025-03-12 23:30:16 +00:00
Sarbagya Dhaubanjar
6d6d7914f9
Added calendar delegate to support custom calendar systems (#161874)
Added `CalendarDelegate` class that supports plugging in custom calendar
logics other than Gregorian Calendar System.

Here is an example implementation for Nepali(Bikram Sambat) Calendar
System:
https://github.com/sarbagyastha/nepali_date_picker/blob/m3/lib/src/nepali_calendar_delegate.dart

Demo using the `NepaliDatePickerDelegate`:
https://date.sarbagyastha.com.np/

Fixes https://github.com/flutter/flutter/issues/77531,
https://github.com/flutter/flutter/issues/161873

## 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.

---------

Co-authored-by: Tong Mu <dkwingsmt@users.noreply.github.com>
2025-03-08 02:41:17 +00:00
Hannes Hultergård
6958d086bc
Add action for configuring default action of EditableText.onTapUpOutside (#162575)
This PR adds an `Action` for configuring a default action of
`EditableText.onTapUpOutside`. This is the equivalent to what
https://github.com/flutter/flutter/pull/150125 did for
`EditableText.onTapOutside`.

Fixes https://github.com/flutter/flutter/issues/162212

## 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.

<!-- 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: Victor Sanni <victorsanniay@gmail.com>
2025-02-28 19:01:33 +00:00
davidhicks980
d48820528c
[raw_menu_anchor.0.dart] Remove misdrawn emojis. (#162807)
This PR removes the leading emojis displayed on the RawMenuAnchor
example. I knew emojis usually showed up monochrome on web, but code
samples also appear to incorrectly display the emoji source.

Because this change doesn't affect the menu's functionality, I didn't
include additional tests, but I'd be happy to add tests if needed. One
test was modified to account for menu items no longer having a leading
icon.

<img width="1247" alt="image"
src="https://github.com/user-attachments/assets/58a338c8-c882-4ad1-af44-596d91e9f382"
/>

Fixes https://github.com/flutter/flutter/issues/162806

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---------

Co-authored-by: Tirth <pateltirth454@gmail.com>
2025-02-07 20:45:35 +00:00
Victor Sanni
41c3008afb
Support CupertinoSliverNavigationBar.search with condensed large title (#159120)
https://github.com/user-attachments/assets/70f48a0e-c87e-4399-ad7b-4dfac4376938



Fixes [Suggestion: CupertinoSliverNavigationBar allow forcing condensed
title](https://github.com/flutter/flutter/issues/59525)
Fixes [Expose search field in
CupertinoSliverNavigationBar.search](https://github.com/flutter/flutter/issues/161556)

## Pre-launch Checklist

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2025-02-07 19:02:24 +00:00
Huy
44203b67f5
Fix DropdownMenu example RenderFlex overflowed error (#162558)
<!--
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Fix https://github.com/flutter/flutter/issues/162506


| before | after |
| --------------- | --------------- |
<video
src="https://github.com/user-attachments/assets/91c82b7c-3449-4b65-9b7a-547030dd6536"/>
| <img
src="https://github.com/user-attachments/assets/a32ecb23-3c87-4b95-8687-d7b3d8190863"/>



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---------

Signed-off-by: huycozy <huy@nevercode.io>
2025-02-07 10:04:14 +00:00
davidhicks980
b29f8f7fb9
Implement RawMenuAnchor (#158255)
This PR adds a `RawMenuAnchor()` widget to widgets.dart. The purpose of
this widget is to provide a menu primitive for the Material and
Cupertino libraries (and others) to build upon. Additionally, this PR
makes MenuController an inherited widget to simplify nested access to
the menu (e.g. if you want to launch a context menu from a deeply-nested
widget).

This PR:
* Centralizes core menu logic to a private class,` _RawMenuAnchor()`, 
  * Provides the internals for interacting with menus:
    * TapRegion interop
    * DismissMenuAction handler
    * Close on scroll/resize
    * Focus traversal information, if applicable
* Subclasses override `_open`, `_close`, `_isOpen`, `_buildAnchor`, and
`_menuScopeNode`
* State is accessible by descendents via
`MenuController.maybeOf(context)._anchor`
* Adds 2 public constructors, backed by a `_RawMenuAnchor()` that
contains shared logic.
  * `RawMenuAnchor()`
    * Users build the overlay from scratch.
* Provides anchor/overlay position information and TapRegionGroupId to
builder
    * Does not provide FocusScope management. 
  * `RawMenuAnchorGroup()`
    * A primitive for menus that do not have overlays (menu bars). 
* This was previously called RawMenuAnchor.node(), but @dkwingsmt made a
good case for splitting out the constructor.

<s>Documentation examples have been added, and can be viewed at
https://menu-anchor.web.app/</s>


<s>https://github.com/user-attachments/assets/25d35f23-2aad-4d07-9172-5c3fd65d53cf</s>

@dkwingsmt 

List which issues are fixed by this PR.
https://github.com/flutter/flutter/pull/143712

Some issues that need to be addressed:

Semantics:
<img width="1027" alt="image"
src="https://github.com/user-attachments/assets/d69661c9-8435-4d9c-b200-474968cb57eb">
I'm basing the menu semantics off of the comment
[here](ef3ca70db2/lib/web_ui/lib/src/engine/semantics/semantics.dart (L382)),
but I'm unsure whether the route should be given a name. There is no
menubar/menu/menuitem role in Flutter, so I'm assuming the menu should
be composed of nested dialogs

<s>Unlike the menubar pattern from
[W3C](https://www.w3.org/WAI/ARIA/apg/patterns/menubar/examples/menubar-navigation/),
the RawMenuAnchor

- does not close on tab/shift-tab. I left this behavior out of the menu
so that users could customize tab behavior, but I'm not opinionated
either way
- does not open on ArrowUp/ArrowDown, because this could interfere with
user focus behavior in unconventional menu setups (e.g. a vertical
menu).
- does not automatically focus the first item in a menu overlay when
activated via enter/spacebar, but does focus the first item when
horizontal traversal opens a submenu. Automatically focusing the first
item whenever an overlay opens interferes with hover traversal, and I
couldn't think of a good way to only focus the first item when an
overlay is triggered via enter/spacebar.
- doesn't focus disabled items (I wasn't sure how to address this
without editing MenuItemButton)

While it is possible to nest menus -- for example, a dropdown anchor
within a full-app context menu area -- nested menus behave as a single
group. I was considering adding an additional parameter that separates
nested root menus from their parents, and am interested to hear your
feedback.</s>

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

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---------

Co-authored-by: Bruno Leroux <bruno.leroux@gmail.com>
Co-authored-by: chunhtai <47866232+chunhtai@users.noreply.github.com>
2025-02-03 23:55:03 +00:00
Christofer
1416381ecc
Fix NavigationRail examples overflow alignment (#159937)
Fix https://github.com/flutter/flutter/issues/160270

Fix the NavigationRail examples overflow alignment by replacing it with
the SegmentedButton widget.

### Before
Example 1:
<img
src="https://github.com/user-attachments/assets/b9f54cd2-b2d1-44ee-a159-f1f04ed011e2"
alt="NavigationRail Example 1 - Before" height="450">

Example: 2:
<img
src="https://github.com/user-attachments/assets/be78bee7-f03d-40ff-ae36-679416c9c3d2"
alt="NavigationRail Example 2 - Before" height="450">

### After
Example 1:
<img
src="https://github.com/user-attachments/assets/c6a3f060-dc9a-44d3-9ab3-3eea5f6183d6"
alt="NavigationRail Example 1 - After" height="450">

Example 2:
<img
src="https://github.com/user-attachments/assets/6b35753b-e2ab-4053-8dd7-d983531b2c74"
alt="NavigationRail Example 2 - After" height="450">




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---------

Co-authored-by: Taha Tesser <tessertaha@gmail.com>
2025-01-31 15:29:25 +00:00
Nate Wilson
06c3c93d72
const AnimationStyle (#160564)
[**AnimationStyle**](https://main-api.flutter.dev/flutter/animation/AnimationStyle-class.html)
is an
[`@immutable`](https://main-api.flutter.dev/flutter/meta/immutable-constant.html)
class with all `final` fields.

This pull request gives it a `const` constructor.

<br>

related: #160563
2025-01-22 21:52:11 +00:00
Michael Goderbauer
9cab4ffee1
Use wildcards (#161548)
https://dart.dev/language/pattern-types#wildcard
2025-01-14 05:13:41 +00:00
Mitchell Goodwin
50f7120de5
CupertinoSheetRoute (#157568)
Fixes #42560

### Updated 12/04/24

Adds a CupertinoSheetRoute which displays an iOS style sheet, while
giving the previous route a delegated transition to sync up correctly.

There's a lot of sample files in this draft showing different use cases
for the sake of reviewing the PR. We'll want to probably go down to
about two before this PR lands.

**TODO in this PR**

- [x] Write actual documentation
- [x] Write tests

**TODO in a feature branch, and will be merged with this PR**

- [ ] Add swipe down to dismiss

**TODO in a follow up PR**

- [ ] Stretching on swipe up
- [ ] Add a fullscreen version
- [x] Dark mode theming

How it currently compares, with the simple case and nested navigation:
| Flutter  | Native|
| ------------- | ------------- |
|
![Flutter-Simple](https://github.com/user-attachments/assets/2a1f277e-91c9-48e0-b894-5fad71ef6a21)
|![Native-Simple](https://github.com/user-attachments/assets/6960252a-f762-4ad8-8d68-5c3d7cf8d4e7)
|
|
![Flutter-Nested](https://github.com/user-attachments/assets/bacb3e35-9d11-4113-9331-75daaded67e7)
|
![Native-stacked](https://github.com/user-attachments/assets/70ccbbbb-24c2-40b5-b838-4f8412828b9b)
|

Update:

![Flutter-Status-Bar](https://github.com/user-attachments/assets/c738cc5c-7176-4df2-9422-6b3fa608c943)
Now the status bar will transition from dark to light text so that it's
visible after the transition.

`cupertino_sheet.0.dart` has an example of what it looks like to do a
simple case. It's fairly straightforward.

`cupertino_sheet.1.dart` shows one with nested navigation. It's
necessary to add a `Navigator` if showing page navigation within the
sheet is wanted. I'm thinking adding an API option that auto sets this
up may be needed as there are some pitfalls.

`cupertino_sheet.2.dart` functionally does the same as above but uses
the `showCupertinoSheet` to reduce boilerplate.

## Pre-launch Checklist

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2025-01-10 23:01:08 +00:00
Michael Goderbauer
5491c8c146
Auto-format Framework (#160545)
This auto-formats all *.dart files in the repository outside of the
`engine` subdirectory and enforces that these files stay formatted with
a presubmit check.

**Reviewers:** Please carefully review all the commits except for the
one titled "formatted". The "formatted" commit was auto-generated by
running `dev/tools/format.sh -a -f`. The other commits were hand-crafted
to prepare the repo for the formatting change. I recommend reviewing the
commits one-by-one via the "Commits" tab and avoiding Github's "Files
changed" tab as it will likely slow down your browser because of the
size of this PR.

---------

Co-authored-by: Kate Lovett <katelovett@google.com>
Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
2024-12-19 20:06:21 +00:00
Tess Strickland
ddc0866e8f
Add more entry-point annotations for test-only code. (#160421)
This change adds entry-point annotations to methods and classes accessed
by native code during Flutter tests. Currently, entry point annotations
are not checked by the Dart VM when running in JIT mode, only in AOT
mode. In order to also enforce entry point annotations in JIT mode,
first tests in Flutter must be appropriately annotated to avoid roll
failures.

Related issues:
* https://github.com/flutter/flutter/issues/118608
* https://github.com/dart-lang/sdk/issues/50649

## 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].
- [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
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2024-12-17 11:40:14 +00:00
Nate Wilson
dc5809309a
Fix SafeArea DartPad sample (#159344)
This pull request fixes a bug I introduced in
https://github.com/flutter/flutter/pull/158019.

<br>

<h3 align="center">Before</h3>
<p align="center">
  <img 

src="https://github.com/user-attachments/assets/fcb68fac-9c63-445d-8d2b-afc28c685053"
    alt="RenderFlex overflowed"
    width="523px"
  />
</p>

<h3 align="center">After</h3>
<p align="center">
  <img 

src="https://github.com/user-attachments/assets/82091c6a-b3c5-4994-978e-5e76cbb7edfd"
    alt="RenderFlex overflowed"
    width="523px"
  />
</p>

<br><br>

- fixes https://github.com/flutter/flutter/issues/159340
2024-12-09 19:54:08 +00:00
Qun Cheng
92107b15fd
Create new page transition for M3 (#158881)
This PR is to add a new page transition for Material 3. 

The new builder matches the latest Android page transition behavior;
while the new page slides in from right to left, it fades in at the same
time and the old page slides out from right to left, fading out at the
same time. When both pages are fading in/out, the black background might
show up, so I added a `ColoredBox` for the slides-out page whose color
defaults to `ColorScheme.surface`. The `backgroundColor` property can be
used to customize the default transition color.

This demo shows the forward and backward behaviors.


https://github.com/user-attachments/assets/a806f25d-8564-4cad-8dfc-eb4585294181

Fixes: https://github.com/flutter/flutter/issues/142352

## 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.
2024-12-07 00:56:57 +00:00
Taha Tesser
689924529b
Updated Material 3 Slider Samples (#159795)
Fixes [Update `Slider` samples for updated Material 3 Slider
spec](https://github.com/flutter/flutter/issues/159794)

### Description

This updates Slider sample to include toggle to opt in to the updated
Material 3 appearance . Remove redundant sample an asset diagram.

### Preview

<img width="840" alt="Screenshot 2024-12-04 at 16 03 47"
src="https://github.com/user-attachments/assets/b6db9efe-8416-460e-a745-bdf37c97ed61">


## 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].
- [ ] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

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2024-12-05 17:55:24 +00:00
Taha Tesser
a6d3bb5cb4
Updated Material 3 Progress Indicators Samples (#158925)
Fixes [Update both `ProgressIndicator` for Material 3
redesign](https://github.com/flutter/flutter/issues/141340)

> [!IMPORTANT]  
> ~~This to be merged after
https://github.com/flutter/flutter/pull/158104.~~ Merged.

### Description 

This updates progress indicator samples to include toggle to opt in to
the updated Material 3 appearance .

### Preview

<img width="753" alt="Screenshot 2024-12-04 at 15 54 50"
src="https://github.com/user-attachments/assets/285f2803-1a12-470a-9afe-2abcf0548ff4">

<img width="753" alt="Screenshot 2024-12-04 at 15 58 35"
src="https://github.com/user-attachments/assets/9caebec9-f65e-4baa-8e39-9a4a4a72b205">


## 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].
- [ ] 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
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2024-12-05 17:54:54 +00:00
Anis Alibegić
e2ada1c939
Fixed typos (#159331)
Here's another one of my PRs where I hunt for typos across `flutter`
repo.

## 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].
- [ ] 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].
- [x] All existing and new tests are passing.

<!-- Links -->
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[breaking change policy]:
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[Discord]: https://github.com/flutter/flutter/wiki/Chat
2024-12-05 16:54:09 +00:00
Renzo Olivares
f3f72ede04
Add SelectionListener/SelectedContentRange (#154202)
https://github.com/user-attachments/assets/59225cf7-5506-414e-87da-aa4d3227e7f6

Adds:
* `SelectionListener`, allows a user to listen to selection changes
under the subtree it wraps given their is an ancestor `SelectionArea` or
`SelectableRegion`. These selection changes can be listened to through
the `SelectionListenerNotifier` that is provided to a
`SelectionListener`.
* `SelectionListenerNotifier`, used with `SelectionListener`, allows a
user listen to selection changes for the subtree of the
`SelectionListener` it was provided to. Provides access to individual
selection values through the `SelectionDetails` object `selection`.
* `SelectableRegionSelectionStatusScope`, allows the user to listen to
when a parent `SelectableRegion` is changing or finalizing the
selection.
* `SelectedContentRange`, provides information about the selection range
under a `SelectionHandler` or `Selectable` through the `getSelection()`
method. This includes a start and end offset relative to the
`Selectable`s content.
* `SelectionHandler.contentLength`, to describe the length of the
content contained by a selectable.

Original PR & Discussion: https://github.com/flutter/flutter/pull/148998

Fixes: #110594

## 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.

---------

Co-authored-by: Renzo Olivares <roliv@google.com>
2024-11-26 00:14:30 +00:00
Christofer
c2309f3a9e
Fix NavigationBar example overflow alignment (#159034)
Fix the NavigationBar example overflow alignment.

### Before: 
<img
src="https://github.com/user-attachments/assets/a6cf2cbb-ac32-482c-9aed-8cac15152a0d"
height="450" />


### After:
<img
src="https://github.com/user-attachments/assets/d476c617-edd3-449d-93cf-4a9a87c26d98"
height="450" />



*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

- [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
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<!-- Links -->
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[Discord]:
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[Data Driven Fixes]:
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2024-11-16 22:24:39 +00:00
Greg Spencer
4d3bbf30c8
Make the focus node on SelectableRegion optional. (#158994)
## Description

This makes the `focusNode`  for `SelectableRegion` optional so that:
- Users of the widget are no longer required to use `SelectableRegion`
from within a `StatefulWidget`
- They aren't likely to forget to dispose of a node they didn't supply.
- Simpler to use, and the node is not used very often anyhow.

Also made the `SelectableRegion` sample actually use `SelectableRegion`.

## Tests
- Modified all the `SelectableRegion` tests to remove 3 identical lines
of boilerplate from each (except 2, which actually used their focus
nodes).
2024-11-15 22:39:41 +00:00
Neutrino2711
4b818b56c2
Updated document to clarify Clip Behaviour (#157719)
Revised comments to clarify that clipping of child depends on clipBehavior of the parent widget, typically scrollable widgets that default to Clips.hard.
Noted that decoration features such as shadows , which render outside the widget boundary, may lead to undesirable effects.
Recommended using Clips.none in scenarios where shadow effects are used to avoid clipping issues.
Fixing Issue #156819
2024-11-14 20:21:09 +00:00