12813 Commits

Author SHA1 Message Date
ash2moon
6fc673fc36
add check for announcement support per platform (#166099)
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Helps unblock https://github.com/flutter/flutter/pull/165531 and is part
of https://github.com/flutter/flutter/issues/165510

*If you had to change anything in the [flutter/tests] repo, include a
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2025-04-08 15:02:08 +00:00
Ahmed R.
896cd9146c
Fix DropdownMenu keyboard navigation on filtered entries (#165868)
Fix `DropdownMenu` keyboard navigation when `enableFilter` is set to
true. Nothing major here, just a simple bugfix.

## Related Issues

- Fixes #165867 

## Tests

Added 1 test.

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2025-04-08 07:07:39 +00:00
Chikamatsu Kazuya
cd0082f04f
Fix: DraggableScrollableSheet may not close if snapping is enabled (#165557)
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fixes #140701

This PR fixes an issue where a DraggableScrollableSheet with `snap` set
to true and `shouldCloseOnMinExtent` set to true may not close when
dragged downward.

The issue was caused by round-off errors accumulated by `addPixelDelta`
method, which could lead to `extent.currentSize` not matching the
`extent.minSize` exactly when the bottom is reached. I added logic to
correct it when the snapping ballistic animation is complete.

<details>
<summary>Sample code</summary>

```Dart
import 'package:flutter/material.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomePage(),
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("DraggableScrollableSheet Test"),
      ),
      body: Center(
        child: ElevatedButton(
          child: Text("Open"),
          onPressed: () {
            showModalBottomSheet(
              context: context,
              showDragHandle: true,
              isScrollControlled: true,
              builder: (context) => _buildBottomSheet(),
            );
          },
        ),
      ),
    );
  }

  Widget _buildBottomSheet() {
    return NotificationListener<DraggableScrollableNotification>(
      onNotification: (notification) {
        print(notification.extent);
        return false;
      },
      child: DraggableScrollableSheet(
        expand: false,
        snap: true,
        shouldCloseOnMinExtent: true,
        maxChildSize: 0.9,
        minChildSize: 0.25,
        builder: (context, scrollController) {
          return ListView.builder(
            controller: scrollController,
            itemCount: 100,
            itemBuilder: (context, index) {
              return ListTile(
                title: Text("Item $index"),
              );
            },
          );
        },
      ),
    );
  }
}
```

</details>

| Before applying fix | After |
| --- | --- |
| * Occurs with probability <video
src="https://github.com/user-attachments/assets/ffd2d097-3ed5-4775-90d5-950092d49591">
| <video
src="https://github.com/user-attachments/assets/0f20cb81-3444-40a3-a84d-ed4bff15887e">
|


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2025-04-08 04:23:34 +00:00
Tong Mu
5e42c80fb4
Add RoundedSuperellipseBorder and apply it to CupertinoActionSheet (#166303)
This PR creates a new class `RoundedSuperellipseBorder`, which is the
main way to draw a rounded superellipse with filling and/or stroking.

The new class is very similar to `RoundedRectangleBorder` and shares a
lot of private code, therefore they reside in the same file.

For demonstration purposes, the rounded superellipse is also applied to
`CupertinoActionSheet`, whose cancel button was drawn with the border
class.



https://github.com/user-attachments/assets/39599dcf-5cf1-46e1-ab34-8c477cbef9d4

(Sadly this demo wouldn't fit for dartpad because rounded superellipses
are not yet supported on Web.)

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2025-04-08 00:05:23 +00:00
Kishan Rathore
b44137f078
Fix: CupertinoSheetTransition moves SystemUIOverlayStyle to outside of delegatedTransition and only changes top bar (#164680)
Fix: CupertinoSheetTransition should set the SystemUIOverlayStyle in
init state
fixes: #164633 
Fixes https://github.com/flutter/flutter/issues/164134

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2025-04-07 19:39:40 +00:00
Kishan Rathore
c6c3876ba9
Feat: Add yearShape property to DatePickerThemeData (#163909)
Feat: Add yearShape property to DatePickerThemeData
fixes: #163340 

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---------

Co-authored-by: Tong Mu <dkwingsmt@users.noreply.github.com>
2025-04-07 06:09:29 +00:00
chunhtai
7afe7a5f8b
Adds semantics input type (#165925)
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fixes https://github.com/flutter/flutter/issues/162130

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2025-04-04 21:15:12 +00:00
Bruno Leroux
b85c0fc2fe
Fix read only TextField focus traversal on macOS (#166056)
## Description

This PR fixes a focus traversal issue for read-only TextField on macOS.

# Implementation details

On macOS, some editing capabilities are handled differently compared to
other platforms.
Since https://github.com/flutter/flutter/pull/105407, the macOS engine
send editing selectors to the framework.
To do so a text input connection should be opened.

Before this PR there was no text input connection for a read-only
EditableText which means several shortcut were not handled, especially
tab traversal (but also selection shortcuts using arrows).

After this PR an input connection is always created on macOS even if an
EditableText is read-only.

## Related Issue

Fixes [Read-only TextField prevents focus from
changing](https://github.com/flutter/flutter/issues/161482)

## Tests

Adds 1 test.
2025-04-03 04:54:21 +00:00
Kishan Rathore
3bf6754d48
Migrate to Theme.brightnessOf method (#163950)
Refactor: Migrate to Theme.brightnessOf method
fixes: #163837

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2025-04-03 00:34:53 +00:00
Kishan Rathore
503672ff1d
Fix: Range slider show overlay for both thumbs on hovering one (#165393)
Fix: Range slider show overlay for both thumbs on hovering one
fixes: #165281 

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2025-04-03 00:33:58 +00:00
Victor Sanni
e1213e4869
Deprecate ExpansionTileController (#166368)
Fixes https://github.com/flutter/flutter/issues/165511

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2025-04-03 00:33:58 +00:00
Dimil Kalathiya
1e63b20d48
Add styling parameters in PopupMenuDivider (#164790)
Fixes https://github.com/flutter/flutter/issues/68176

- Add thickness, indent, endIndent and radius option on PopupMenuDivider
- Test coverage

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2025-04-03 00:33:58 +00:00
Matan Lurey
997f742ac5
Fix ISSUE_TEMPLATE Ordering: 10 < 9, but 10 > 09 (#166455)
Unfortunately `10_google3_bug.yml` comes before `2_bug.yml`.

This changes the name (slightly) of the issue templates based on the
instructions from GitHub on what to do when you have 10+ issue templates
(as a side-note: I wonder if we need/still use umbrella bugs for the
feature tracker, or two types of performance bugs)
2025-04-03 00:24:34 +00:00
Yegor
fbbe0f9e7a
[a11y] add SemanticsValidationResult (#165935)
Add `SemanticsValidationResult` to semantics that maps onto
`aria-invalid`.

Fixes https://github.com/flutter/flutter/issues/162142
2025-04-02 22:00:19 +00:00
chunhtai
aeab137280
Adds semantics role and adjust semantics for navigation bar (#162467)
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framework side of https://github.com/flutter/flutter/issues/107861

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2025-04-02 21:28:56 +00:00
Kishan Rathore
9a6ae31e1e
Fix: Hero animation for page transition (#164469)
Fix: Hero animation for page transition
fixes: #163989 

## Pre-launch Checklist

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[test-exempt].
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Fixes] where supported.
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2025-04-02 21:27:07 +00:00
Kishan Rathore
4503f2f459
Fix: DelegateTransition for cupertino sheet route (#164675)
Fix: DelegateTransition for cupertino sheet route
fixes: #163954 

## Pre-launch Checklist

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[test-exempt].
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Fixes] where supported.
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2025-04-02 21:27:07 +00:00
icnahom
9ce60b743d
Fix typo in carousel.dart (#164727)
Changed "sepcs" to "specs"

Co-authored-by: Tong Mu <dkwingsmt@users.noreply.github.com>
Co-authored-by: Qun Cheng <36861262+QuncCccccc@users.noreply.github.com>
2025-03-31 20:50:27 +00:00
Conner Kasten
a13f7717bf
Public nodes needing paint or layout (#166148)
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This PR adds 2 new `@protected` fields to `PipelineOwner` which list the
RenderObjects currently needing paint or layout for the next frame.

This PR addresses https://github.com/flutter/flutter/issues/166147,
which has further discussion of the motivation.

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2025-03-31 20:13:32 +00:00
Kishan Rathore
082a24cdb2
Feat: Add brightnessOf method for theme (#163733)
Feat: Add brightnessOf method for theme
fixes: #163393 

## Pre-launch Checklist

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2025-03-31 18:46:44 +00:00
Elliott Brooks
cf5212d4bb
[Widget Inspector] Jump to source code of implementation widgets from Flutter Inspector (#165924)
Fixes https://github.com/flutter/devtools/issues/9063


![implementation_widgets_source_code](https://github.com/user-attachments/assets/f82a8123-3391-413e-ba76-23d6f45f13d7)
2025-03-28 19:30:49 +00:00
LongCatIsLooong
884e011d67
Make sure LayoutBuilder rebuild in an inactive route (#154681)
Prompted by https://github.com/flutter/flutter/issues/154060: widgets
should always rebuild even when off-screen. The ancestor widget could be
trying to pass down information that is not related to the UI state, or
trying to pause video playback. Widgets with global keys should also
always rebuild to make sure the widget tree is consistent in terms of
global keys.

~Also prevents unnecessary repaints:
https://github.com/flutter/flutter/issues/106306#issuecomment-1266432242~

This works by adding `_RenderLayoutBuilder` as a relayout boundary in
the dirtly layout list so the layout callback always gets a chance to
run if marked dirty.

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2025-03-28 18:31:20 +00:00
Kishan Rathore
a59795e812
Refactor: Migrate Date picker from MaterialState and MaterialStateProperty (#164972)
Refactor: Migrate Date picker from MaterialState and
MaterialStateProperty to WidgetState and WidgetStateProperty
Part 1 of: #161052 

Part 2 will contain addition of `selectedBackgroundColor` and
`selectedForegroundColor` which fully adds the requested feature.

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2025-03-27 23:29:29 +00:00
Saptarshi Adhikari
cfef140ba9
Removed not working hyperlinks to ScriptCategory values (#165395)
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## Description

Removing the hyperlinks to ScriptCategory values which are not working
with only `code text`.

---

## Screenshots
### Before :

<img width="1024" alt="image"
src="https://github.com/user-attachments/assets/1721527b-f0d5-4d72-a6e4-bfde6d81e7fb"
/>

ScriptCategory.englishLike hyperlink not working:

<img width="1006" alt="image"
src="https://github.com/user-attachments/assets/81ff9d06-0007-4edf-958b-f2d5284ee3dd"
/>


### After :

<img width="1014" alt="image"
src="https://github.com/user-attachments/assets/48dd2299-f71b-4978-9e10-db40827215b6"
/>

---

- Fixes #164877 

---

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2025-03-27 18:47:48 +00:00
yakagami
479c4bb224
add PointerDeviceKind to ScaleStartDetails (#165096)
Adds the `PointerDeviceKind` of the scale start event to
`ScaleStartDetails`, which is currently missing.

This is a bug according to #115061. Additionally, according to the docs:

>Having both a pan gesture recognizer and a scale gesture recognizer is
redundant; scale is a superset of pan. Just use the scale gesture
recognizer.

See also #135936 for similar issues and the PRs fixing them.

If multiple pointers are contacting the screen at scale start, then the
`PointerDeviceKind` of the first pointer is used. In practice this
should be good enough as I don't know of any UI that expects you to use
two different pointer kinds at the same time. However, if this is an
issue, we could either give a list of pointers with their kinds or a set
of all active `PointerDeviceKind`s. I don't think this is necessary
though.

Closes #115061.

## Pre-launch Checklist

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2025-03-27 18:44:17 +00:00
Luka S
c575638443
Update documentation on TextPainter to note default color differences (#165048)
This change only changes the documentation of `TextPainter`.

Previously, the documentation was incorrect in stating that the default
text color was white. It changes depending on platform to be contrasted
to the canvas' background color.

This is in an "important" box because it affects apps working on native
& web, and is relatively easy to miss.

It may be worth documenting this elsewhere?

Fixes #165047

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2025-03-27 04:45:08 +00:00
Muhammad Ahmer Khan
9ad5fc233b
docs: fix ListView reference in SliverList documentation (#165827)
**Description**
This pull request fixes a minor documentation issue in the SliverList
reference, where a missing closing bracket ] in the ListView reference
could lead to confusion when reading the docs.

By correcting this, we improve the readability and clarity of the
documentation for Flutter developers referencing the SliverList widget.

**Why is this change needed?**

- Proper documentation is essential for developers to understand Flutter
widgets efficiently.
- The missing bracket could cause confusion for new contributors and
developers reading the API documentation.
- While this is a small fix, ensuring high-quality documentation aligns
with Flutter’s commitment to a great developer experience.


**Screenshot Before Fixing** 

<img width="615" alt="Screenshot 2025-03-25 at 12 08 15 AM"
src="https://github.com/user-attachments/assets/d714d15d-5c78-46cf-8e7e-7347a788f9c7"
/>

**Screenshot After Fixing** 

<img width="578" alt="Screenshot 2025-03-25 at 12 20 20 AM"
src="https://github.com/user-attachments/assets/59dce920-1901-4d89-a598-f9e79a07a2d2"
/>



**Joining the Flutter Open-Source Community**

This is my first open-source contribution to Flutter, and I’m very
excited to start contributing more to the project! 🚀


## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
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[test-exempt].
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Fixes] where supported.
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2025-03-27 04:43:31 +00:00
Mouad Debbar
d5751be500
High contrast color scheme based on system forced colors (#165068)
This PR introduces a `bool useSystemColors` parameter to the `ThemeData`
constructor.

The goal from this PR is to enable users to easily create high contrast
themes that are based on system colors for their `MaterialApp`:

```dart
MaterialApp(
  theme: ThemeData.light(),
  darkTheme: ThemeData.dark(),
  highContrastTheme: ThemeData(useSystemColors: true, ...),
  highContrastDarkTheme: ThemeData(useSystemColors: true, ...),
)
```
The `MaterialApp` widget will automatically pick the correct one of the
4 themes based on system settings (light/dark mode, high contrast
enabled/disabled).

Depends on https://github.com/flutter/flutter/pull/164933
Closes https://github.com/flutter/flutter/issues/118853
2025-03-26 19:25:07 +00:00
Kishan Rathore
97167ed5a6
Fix: Remove attach target on deactivation of widget from overlay portal controller (#164439)
Fix: Remove attach target on deactivation of widget from overlay portal
controller
fixes: #164376 

## 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 `///`).
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[test-exempt].
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Fixes] where supported.
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2025-03-26 02:16:26 +00:00
masato
71be3b14f9
Add enableDrag property to CupertinoSheetRoute and showCupertinoSheet (#163923)
Implemented. (flutter#163852)

This PR adds the `enableDrag` option to showCupertinoSheet and
CupertinoSheetRoute, allowing developers to control whether the sheet
can be dismissed by dragging.

## How to Verify
- Set enableDrag: false in CupertinoSheetRoute or showCupertinoSheet.

```dart

CupertinoSheetRoute<void>(
      builder: (BuildContext context) => const _SheetScaffold(),
      enableDrag: false,
 ),

// or

showCupertinoSheet<void>(
      context: context,
      useNestedNavigation: true,
      pageBuilder: (BuildContext context) => const _SheetScaffold(),
      enableDrag: false,
 );

```

- The following is a screenshot of
`examples/api/lib/cupertino/sheet/cupertino_sheet.0.dart` after adding
`enableDrag: false`.



https://github.com/user-attachments/assets/315fb0e5-ceee-4150-be6e-dd919a7c2317

## Pre-launch Checklist

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we expect every widget to implement].
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above.
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- [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
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---------

Co-authored-by: Tong Mu <dkwingsmt@users.noreply.github.com>
2025-03-25 21:15:48 +00:00
Jason Simmons
0af426f37c
Animate a CupertinoButton based on tap move events only if the move happens between a tap down and a tap up (#165729)
Fixes https://github.com/flutter/flutter/issues/165724
2025-03-25 21:15:48 +00:00
chunhtai
bf6481104d
Revert "Add set semantics enabled API and wire iOS a11y bridge (#1612… (#165901)
…65)"

This reverts commit 26037dff87ade9d9dee04cc2ef90b3fe5cf0faf3.

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PR causes internal test failures

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2025-03-25 18:24:46 +00:00
Kate Lovett
7561caa71f
Add factory constructors for shorthands that would collide (#165597)
EdgeInsets and EdgeInsetsDirectional are subtypes of EdgeInsetsGeometry.
The both have only, all, and symmetric constructors, which creates
collisions in a world where Dart support shorthand notation such as:

```dart
Padding(
  padding: .only(bottom: 10.0),
),
```
 The same goes for all these classes: 

- AlignmentGeometry
  - Alignment
  - AlignmentDirectional
- BorderRadiusGeometry
  - BorderRadius
  - BorderRadiusDirectional
- BoxBorder
  - Border
  - BorderDirectional
- EdgeInsetsGeometry
  - EdgeInsets
  - EdgeInsetsDirectional


The shorthands feature is not planning to exhaustively check subtypes.
However, these classes were identified as the most impactful for the
shorthands feature ( ). Adding these factories in the super classes
enables future shorthand support.

Prior in https://github.com/flutter/flutter/pull/159703

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2025-03-25 01:07:16 +00:00
chunhtai
26037dff87
Add set semantics enabled API and wire iOS a11y bridge (#161265)
fixes https://github.com/flutter/flutter/issues/158399

old pr https://github.com/flutter/engine/pull/56691

previously the only correct way to enable semantics is that ios
embedding receive signal from native OS, it call SetSemanticsEnabled to
shell and then to dart to enable semantics tree generation.

If for some reason framework decide to enable semantics first, e.g.
through SemanticsBinding.instance.ensureSemantics(typically due to
integration test or ci that wants to test semantics), the update will be
dropped in shell. Even if it later on receive signal from native OS to
turn on semantics, it can't construct the complete accessibility tree in
embedding because the updatesemantics sends diff update and previous
updates are gone forever. It will end up in a broken state.

This pr changes so that the only source of truth will be in the
framework side. When framework starts generating the the semantics tree,
it will call SetSemanticsTreeEnabled through dart:ui, and the embedding
needs to prepare itself to accept semantics update after receiving the
message.

This however require some refactoring on iOS embedding because it will
only create a11y bridge when receiving OS notification when assitive
technologies turns on.

This requires three phase transition

add an empty dart:ui API setSemanticsTreeEnabled
makes framework calls the empty API.
merge this pr with actual implementation of setSemanticsTreeEnabled

I will do the android part in a separate pr


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2025-03-24 20:11:13 +00:00
Kouki Badr
2c58a631fe
feat(CupertinoDatePicker): add a two points time seperator column (#163417)
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This pull request adds a flag attribute to cupertino date picker to
show/hide the two points seperator ":" between minutes and hours, this
feature add more customization to the cupertino date picker widget.
This new flag is by default set to false and it's an optional flag, the
default cupertino date picker behavior stays the same.

**CupertinoDatePIcker before:**
<img
src="https://github.com/user-attachments/assets/94f6722d-b466-4272-b90f-6ac3b358ba6d"
width="200"/> <img
src="https://github.com/user-attachments/assets/125386fd-2b7d-4988-a54e-8893a7f5907b"
width="200"/>

**CupertinoDatePicker After**
<img
src="https://github.com/user-attachments/assets/b5a703d9-6c43-410d-819f-f864e9dde159"
width="200"/> <img
src="https://github.com/user-attachments/assets/26e828dd-81c4-456f-b8c7-7c116d691060"
width="200"/>

*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.*
Here's the issue in question for more details about the proposal and the
use cases:
[Issue#163416](https://github.com/flutter/flutter/issues/163416)

*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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2025-03-24 18:37:54 +00:00
Valentin Vignal
096c4ace35
Make chip.dart use WidgetStatesController (#161487)
Fixes https://github.com/flutter/flutter/issues/128289

Follow up of https://github.com/flutter/flutter/pull/128507 and
https://github.com/flutter/flutter/pull/159422

- Makes `RawChip` use `WidgetStatesController` instead of
`MaterialStateMixin`
- Remove references of `MaterialState` to replace them with
`WidgetState`

## Pre-launch Checklist

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---------

Co-authored-by: Qun Cheng <36861262+QuncCccccc@users.noreply.github.com>
2025-03-24 16:55:06 +00:00
Justin McCandless
8128f08603
Use SystemContextMenu by default on iOS (#165354)
With this change, widgets based on EditableText will show the system
context menu by default on iOS. Anyone with a custom contextMenuBuilder
will not be affected and will have to opt-in to using SystemContextMenu.
Also, this does not affect SelectionArea, which can't receive paste.

Fixes https://github.com/flutter/flutter/issues/163067
2025-03-24 16:53:04 +00:00
Hannes Hultergård
a767a0ccbd
Add focus check to onTapUpOutside (#162939)
Adds a focus check to `onTapUpOutside` of `EditableText`, so that it
doesn't trigger if the `EditableText` doesn't have focus.

`onTapOutside` already had this check, but it was missed when
`onTapUpOutside` was added.

Fixes https://github.com/flutter/flutter/issues/162573


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2025-03-24 13:14:30 +00:00
Memet
be627165df
feat: Added forceErrorText in DropdownButtonFormField #165188 (#165189)
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Feat: Added forceErrorText in DropdownButtonFormField #165188


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---------

Co-authored-by: Bruno Leroux <bruno.leroux@gmail.com>
2025-03-24 07:07:51 +00:00
Ahmed Elsayed
0ab39c3278
Prefer using non nullable opacityAnimation property (#164795)
`opacityAnimation` of `DropdownMenuItemButton` is always set with a
non-nullable value. Therefore, I think it's a good idea to use `late
CurvedAnimation` instead of `CurvedAnimation?` and avoid the unnecessary
null assertion operator (!)

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we expect every widget to implement].
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2025-03-24 07:00:30 +00:00
Ben Konyi
41c427c6de
[ Widget Preview ] Remove WidgetPreview in favor of using annotation properties (#165500)
This change reworks how users define previews in their code, expands the
number of valid 'functions' that can be used to create previews, and
allows for specifying a 'wrapper' function to wrap the previewed widget
with

The `WidgetPreview` class has been removed from the framework, with its
properties being added to the `Preview` annotation class instead to
remove some boilerplate from the preview declaration workflow.

Before:

```dart
@Preview()
List<WidgetPreview> previews() => <WidgetPreview>[
      WidgetPreview(
        name: 'Top-level preview',
        child: Text('Foo'),
      ),
  ];
```

After:

```dart
@Preview(name: 'Top-level preview')
Widget previews() => Text('Foo');
```

Previews can now be defined using top-level functions, constructors and
factories which take no arguments, and static methods within classes:

Examples:

```dart
@Preview(name: 'Top-level preview')
Widget previews() => Text('Foo');

class MyWidget extends StatelessWidget {
  @Preview(name: 'Constructor preview')
  MyWidget.preview();

  @Preview(name: 'Factory preview')
  factory MyWidget.factoryPreview() => MyWidget.preview();

  @Preview(name: 'Static preview')
  static Widget previewStatic() => Text('Static');

  @override
  Widget build(BuildContext context) {
    return Text('MyWidget');
  }
}
```

Users can also provide a `wrapper` function with the signature `Widget
Function(Widget)` to easily wrap previewed widget with shared
bootstrapping logic.

Example:

```dart
Widget testWrapper(Widget child) {
  return Provider<int>.value(
    value: 42,
    child: child,
  );
}

@Preview(name: 'Preview with wrapper', wrapper: testWrapper)
Widget preview() {
  return Text('Attributes');
}
```

Which is effectively the same as:

```dart
@Preview(name: 'Preview with wrapper')
Widget preview() {
  return Provider<int>.value(
    value: 42,
    child: Text('Attributes'),
  );
}
```

Finally, for situations where a `BuildContext` is needed, users can
return a `WidgetBuilder` from their preview function:

```dart
@Preview('Builder preview')
WidgetBuilder builderPreview() {
  return (BuildContext context) {
    // TODO: retrieve state from context.
    return Text('Foo');
  };
}
```
2025-03-22 01:35:36 +00:00
Tong Mu
cc35800e6a
Fix SpringSimulation formula for underdamping (#165017)
Fix https://github.com/flutter/flutter/issues/163858

## Pre-launch Checklist

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2025-03-21 20:46:07 +00:00
Victor Sanni
1fa9254076
Cupertino navigation bars transitionBetweenRoutes fidelity update (#164956)
In the before Flutter video, drag happens after the 17 second mark.

## Flutter before


https://github.com/user-attachments/assets/9fbcd59e-68aa-4975-9a66-f05e72071223


## Flutter after



https://github.com/user-attachments/assets/784d7f46-a8ce-4e5f-a849-3b19df6668c9



## Flutter back swipe drag gesture



https://github.com/user-attachments/assets/09d38c01-aeea-46c1-90b4-590861f8f3a2




## Native iOS


https://github.com/user-attachments/assets/f2ab96c0-766b-4452-b6d5-3f92e6b6785f

## Flutter scaled back chevron and large title after


https://github.com/user-attachments/assets/ba87add7-affa-4dcc-b2f0-abbc3487d677






## Native iOS scaled back chevron and large title


https://github.com/user-attachments/assets/5c7bfe5b-5789-4ab9-8e36-770cf802b1b1



Native iOS is probably using a spring simulation. This is the closest
curve we have to the native transition, but should be updated in the
future with the exact values.

Fixes [Cupertino navigation bars transitionBetweenRoutes fidelity
update](https://github.com/flutter/flutter/issues/164662)
2025-03-20 19:54:59 +00:00
Huy
e0676b47c7
Add SearchAnchor.viewOnOpen and SearchAnchor.bar.onOpen (#164541)
Fix https://github.com/flutter/flutter/issues/160886

From the context of the issue, user wants to observe open/close events
for search view with SearchController.isOpen. However, I think that is
not a friendly approach/solution due to it relies on a
TextEditingController, it is a ValueNotifier which we implicitly
understand is dedicated to text input.

During the investigation, I found that `viewOnClose` works perfectly
because it is a callback from `_SearchViewRoute` (which is a PopupRoute
so it has didPush and didPop callbacks that we can leverage). `onClose`
was called on `didPop`, so we can solve this by creating a similar
`onOpen` then call it on `didPush`. Users then can implement both
callbacks for their needs.

In this PR:

- Propose adding SearchAnchor.viewOnOpen and `SearchAnchor.bar`.onOpen
- Improve documentation of SearchController, so that users will not be
confused with `SearchController.isOpen`

#### Demo (after the fix)


https://github.com/user-attachments/assets/7f30b831-e2d7-4a72-bc0f-35c858e3427b



## Pre-launch Checklist

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---------

Signed-off-by: huycozy <huy@nevercode.io>
2025-03-20 10:22:23 +00:00
ash2moon
ecbb115ae3
deprecate Android announcement events and add deprecation warning. (#165195)
Due to this [Android
deprecation](https://developer.android.com/reference/android/view/View#announceForAccessibility(java.lang.CharSequence))
Flutter needs to show deprecation warnings to developers when using
announce on Android.

Unfortunately testing this log statement is impossible since robolectric
currently does not support API >=36.
https://github.com/flutter/flutter/issues/165220 will add the test code
in once robolectric supports 36.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
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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].
- [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.

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2025-03-19 23:42:18 +00:00
Qun Cheng
32b34ff99e
Add aria menu roles to menu-related widgets (#164741)
Related to https://github.com/flutter/flutter/issues/157177

This PR is to add the following changes:
* Implement `SemanticsRole.menu`, `SemanticsRole.menuItem`,
`SemanticsRole.menuBar`, `SemanticsRole.menuItemCheckbox`, and
`SemanticsRole.menuItemRadio`.
* Add `SemanticsRole.menu` role in ~`MenuAnchor`~, `DropdownButton`, and
`PopupMenuButton`
~* Add `SemanticsRole.menuBar` role to `MenuBar`~
* Add `SemanticsRole.menuItem` to ~`MenuItemButton`~, `DropdownMenuItem`
and `PopupMenuItem`
~* Add `SemanticsRole.menuItemCheckbox` to `CheckboxMenuButton`~
~* Add `SemanticsRole.menuItemRadio` to `RadioMenuButton`~

## 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
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- [x] 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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2025-03-19 20:33:15 +00:00
LongCatIsLooong
342223f2e8
Implement Autocomplete layout with the new OverlayPortal childLayoutBuilder API (#165249)
Fixes https://github.com/flutter/flutter/issues/160625

This also makes it very easy to implement
https://github.com/flutter/flutter/issues/101620.

## Pre-launch Checklist

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responsibilities.
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we expect every widget to implement].
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above.
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- [ ] I added new tests to check the change I am making, or this PR is
[test-exempt].
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Fixes] where supported.
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2025-03-19 16:35:24 +00:00
Victor Sanni
010d31d109
Introduce Expansible, a base widget for ExpansionTile (#164049)
Take 2 

Design doc:
[flutter.dev/go/codeshare-expansion-tile](https://docs.google.com/document/d/1GTyEZjjTpx6fcrzOX-6kQ3phwu5UhUGLOWXJoy0yto0/edit?tab=t.0)

Fixes [Codeshare between ExpansionTile and its Cupertino
variant](https://github.com/flutter/flutter/issues/163552)

## Pre-launch Checklist

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there for submitting PRs.
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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].
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Fixes] where supported.
- [ ] All existing and new tests are passing.

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2025-03-19 07:56:09 +00:00
Ujjwal Pratap Singh
42d4f69566
fix: "show dialog" functions should allow setting an AnimationStyle (#164002)
<!--
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fixes issue #154744

## Pre-launch Checklist

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there for submitting PRs.
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responsibilities.
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we expect every widget to implement].
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---------

Co-authored-by: Tong Mu <dkwingsmt@users.noreply.github.com>
2025-03-19 05:40:18 +00:00
chunhtai
ce667ede75
Reland role merge (#165330)
<!--
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the previous pr causes some issue with mobile platform.
The change is in second commit

## Pre-launch Checklist

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2025-03-18 21:01:16 +00:00