141 Commits

Author SHA1 Message Date
Kate Lovett
9d96df2364
Modernize framework lints (#179089)
WIP

Commits separated as follows:
- Update lints in analysis_options files
- Run `dart fix --apply`
- Clean up leftover analysis issues 
- Run `dart format .` in the right places.

Local analysis and testing passes. Checking CI now.

Part of https://github.com/flutter/flutter/issues/178827
- Adoption of flutter_lints in examples/api coming in a separate change
(cc @loic-sharma)

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2025-11-26 01:10:39 +00:00
LongCatIsLooong
2fcda04790
Add error handling for Element lifecycle user callbacks (#173148)
This is for #172289, but since this fix is speculative so I'll wait for
the confirmation from the original reporters before closing the issue.

As a bonus this fixes #65655

The framework Element rebuild logic relies heavily on
`Element._lifecycleState` being correct. When a user-supplied lifecycle
callback (e.g., `State.deactivate`) fails the framework currently only
ensures that every `Element` in the tree has the right lifecycle state,
so an out-of-tree `Element` that is supposed to be disposed may still
have an `active` state and continue being rebuilt by the BuildScope
(because it's in the dirty list). See the comments in #172289

Also related:
#100777
Internal:
b/425298525 b/431537277
b/300829376 b/415724119 b/283614822

# TODO (in a different PR)
The original issue could also be caused by incorrect
`Element.updateChild` calls. If an `Element` subclass calls
`Element.updateChild` to add child but forgets to update its child list
accordingly (such that `visitChildren` misses that child), you'll get a
child Element that thinks it's a child of the parent but the parent
doesn't recognize the child so won't take that child into account during
reparenting or unmounting. This is a programmer error that we should try
to catch in the framework.

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2025-08-14 19:53:20 +00:00
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
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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2025-07-07 17:58:32 +00:00
Michael Goderbauer
9cab4ffee1
Use wildcards (#161548)
https://dart.dev/language/pattern-types#wildcard
2025-01-14 05:13:41 +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
Anis Alibegić
e2ada1c939
Fixed typos (#159331)
Here's another one of my PRs where I hunt for typos across `flutter`
repo.

## Pre-launch Checklist

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2024-12-05 16:54:09 +00:00
LongCatIsLooong
f513a69838
Mark _LayoutBuilderElement as always clean (#154694)
Fixes https://github.com/flutter/flutter/issues/154060

The error message doesn't make sense to me since one can call `setState` during the idle phase, and I'm not sure what this is guarding against without the right error message.

In the case of #154060 the layout builder was never laid out:
```
├─child 1: _RenderLayoutBuilder#7c319 NEEDS-LAYOUT NEEDS-PAINT
│   creator: LayoutBuilder ← _BodyBuilder ← MediaQuery ←
│     LayoutId-[<_ScaffoldSlot.body>] ← CustomMultiChildLayout ←
│     _ActionsScope ← Actions ← AnimatedBuilder ← DefaultTextStyle ←
│     AnimatedDefaultTextStyle ← _InkFeatures-[GlobalKey#1f6eb ink
│     renderer] ← NotificationListener<LayoutChangedNotification> ← ⋯
│   parentData: offset=Offset(0.0, 0.0); id=_ScaffoldSlot.body
│   constraints: MISSING
│   size: MISSING
```
So https://github.com/flutter/flutter/pull/154681 doesn't really fix #154060 since the layout callback cannot be run without a set of valid constraints. 

Before the `BuildScope` change all `_inDirtyList` flags were unset after the `BuildOwner` finishes rebuilding the widget tree, so `LayoutBuilder._inDirtyLst` is always set to false after a frame even for layout builders that were never laid out.
With the `BuildScope` change, `LayoutBuilder` has its own `BuildScope` which is only flushed after LayoutBuilder gets its constraints.
2024-09-13 01:24:11 +00:00
gaaclarke
203f11647f
Update color assertions (#154752)
issue: https://github.com/flutter/flutter/issues/127855
This is a forward fix to help
https://github.com/flutter/engine/pull/54981 land.

It makes the following changes:
1) Removes hardcoded `Color.toString()` assumptions in asserts
1) Switches some lerp tests to use numbers that are more friendly to
uint8_t and floating point numbers
1) implements custom matchers for color
1) removes word wrapping for some asserts since it makes them fragile to
changes in `Color.toString()` invocations

## Pre-launch Checklist

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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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2024-09-10 15:32:40 -07:00
Nate Wilson
788a0e3d2f
Implementing null-aware logic in /packages/flutter/ (#152294)
Hopefully soon, [flutter.dev/go/dart-patterns](https://flutter.dev/go/dart-patterns) will have lots of good feedback; in the meantime, I'll focus refactoring efforts on uncontroversial things :)

Previously, I was under the impression that I could solve issue #143803 with [just 1 PR](https://github.com/flutter/flutter/pull/143804).
It turns out that I had overlooked quite a bit!

<br>

```dart
// before
if (chunkEvents != null) {
  chunkEvents.listen((ImageChunkEvent event) {
      reportImageChunkEvent(event);
    },
  );
}

// after
chunkEvents?.listen(reportImageChunkEvent);
```
2024-07-31 23:35:24 +00:00
LongCatIsLooong
8ce3bfb6ca
Remove temporary LayoutBuilder migration flag, defer markNeedsLayout (#149637)
Looks like I did not need this flag since flutter_portal pinned flutter version to 3.10 in their presubmits. 

I'll create a g3 fix for this since there're only a handful of scuba failures. Also a g3 test revealed a problem with calling `renderObject.markNeedsLayout` directly. It has to be deferred so the render tree is clean during the idle phase and the postFrameCallback phase.
2024-06-05 20:51:04 +00:00
LongCatIsLooong
8e15e56c81
Reland "Prevent LayoutBuilder from rebuilding more than once (#147856)" (#149303)
Diff commit: a3f7acab0c

In the failing tests the debugger treated the exception thrown by `Element.rebuild` as a caught exception in the absence of the vm pragma.
2024-06-03 16:45:23 +00:00
auto-submit[bot]
ebc414337d
Reverts "Prevent LayoutBuilder from rebuilding more than once (#147856)" (#149279)
Reverts: flutter/flutter#147856
Initiated by: loic-sharma
Reason for reverting: tree is closed with errors like: 

```
test/integration.shard/break_on_framework_exceptions_test.dart: breaks when rebuilding dirty elements throws [E]
  Expected: <45>
    Actual: <2756>
  
  package:matcher                                                       expect
  test\integration.shard\break_on_framework_exceptions_test.dart 56:5   main.expectException
  ===== asynchronous gap ===
Original PR Author: LongCatIsLooong

Reviewed By: {goderbauer}

This change reverts the following previous change:
Fixes https://github.com/flutter/flutter/issues/146379: introduces `Element.buildScope` which `BuildOwner.buildScope` uses to identify subtrees that need skipping (those with different `BuildScope`s). If `Element.update` calls `updateChild` then dirty children will still be rebuilt regardless of their build scopes. 

This also introduces `LayoutBuilder.applyDoubleRebuildFix` migration flag which should only live for a week or less. 

Caveats: 

`LayoutBuilder`'s render object calls `markNeedsLayout` if a descendant Element is dirty. Since `markNeedsLayout` also implies `markNeedsPaint`, the render object is going to be very repaint/relayout-happy.

Tests: 

Presubmits with the migration flag set to true: https://github.com/flutter/flutter/pull/147856/checks?check_run_id=24629865893
2024-05-29 23:29:19 +00:00
LongCatIsLooong
bafdb124c7
Prevent LayoutBuilder from rebuilding more than once (#147856)
Fixes https://github.com/flutter/flutter/issues/146379: introduces `Element.buildScope` which `BuildOwner.buildScope` uses to identify subtrees that need skipping (those with different `BuildScope`s). If `Element.update` calls `updateChild` then dirty children will still be rebuilt regardless of their build scopes. 

This also introduces `LayoutBuilder.applyDoubleRebuildFix` migration flag which should only live for a week or less. 

Caveats: 

`LayoutBuilder`'s render object calls `markNeedsLayout` if a descendant Element is dirty. Since `markNeedsLayout` also implies `markNeedsPaint`, the render object is going to be very repaint/relayout-happy.

Tests: 

Presubmits with the migration flag set to true: https://github.com/flutter/flutter/pull/147856/checks?check_run_id=24629865893
2024-05-29 22:03:20 +00:00
Kostia Sokolovskyi
47bfa827ba
Memory leaks clean up 1 (#145691) 2024-03-25 10:36:42 -07:00
Polina Cherkasova
0f2618ff4f
Fix or except leaks. (#141081)
Contributes to https://github.com/flutter/devtools/issues/6909.
2024-01-10 00:17:33 +00:00
Polina Cherkasova
baf739c8e6
Remove usage of testWidgetsWithLeakTracking. (#140239) 2023-12-15 14:13:31 -08:00
Taha Tesser
e8c2bb1356
Reland "Update framework_test.dart to remove ButtonBar usage and remove references from other clases (#137550) (#137753)
This PR removes `ButtonBar` usage from `framework_test.dart` class and update other references in preparation for `ButtonBar` deprecation

related to https://github.com/flutter/flutter/issues/127955

reland https://github.com/flutter/flutter/pull/137550
2023-11-14 17:55:05 +00:00
Alex Isaienko
b5fb6652d6
InheritedElement.removeDependent() (#129210)
Call the `dependency.removeDependent(this)` instead of `dependency._dependents.remove(this)` inside the `Element.deactivate()`. This allows `InheritedElements` to know when they can release resources associated with a given dependent `Element`.

Fixes #129207
2023-11-03 23:27:21 +00:00
auto-submit[bot]
b47e4c4acb
Reverts "Update framework_test.dart to remove ButtonBar usage and remove references from other clases" (#137731)
Reverts flutter/flutter#137550
Initiated by: Piinks
This change reverts the following previous change:
Original Description:
This PR removes `ButtonBar` usage from `framework_test.dart` class and update other references in preparation for `ButtonBar` deprecation

related to https://github.com/flutter/flutter/issues/127955
2023-11-01 22:58:19 +00:00
Taha Tesser
b1f5d96a82
Update framework_test.dart to remove ButtonBar usage and remove references from other clases (#137550)
This PR removes `ButtonBar` usage from `framework_test.dart` class and update other references in preparation for `ButtonBar` deprecation

related to https://github.com/flutter/flutter/issues/127955
2023-11-01 22:03:54 +00:00
Kostia Sokolovskyi
95eae5f967
Cover more test/widgets tests with leak tracking #12. (#135385) 2023-09-29 17:47:04 -07:00
Polina Cherkasova
49e16867a3
TabController should dispatch creation in constructor. (#133952) 2023-09-22 15:27:05 -07:00
Kostia Sokolovskyi
ff10c52ad6
Cover more test/widgets tests with leak tracking #3 (#134576) 2023-09-14 12:26:41 -07:00
Polina Cherkasova
bff6b93683
Next attempt to make inspector weakly referencing the inspected objects. (#129962) 2023-07-06 12:19:18 -07:00
Michael Goderbauer
6221d5c709
Refactor tests (#128371)
To make them a little more resilient to changes in the tree shape as the tree will be changing a little bit for multi view.
2023-06-07 03:02:55 +00:00
Michael Goderbauer
7f41ab25c9
Fix (insert|move|remove)RenderObjectChild methods in base class (#123276) 2023-03-23 12:34:26 -07:00
yim
c4d40cc152
Modify the updateChildren method deep copy _children (#120773)
* Modify the updateChildren method deep copy _children

* add test

* fix some small nits

* Simplified newChildren declaration in updateChildren
2023-02-17 18:29:02 +00:00
Michael Goderbauer
bb73121cb4
Remove unnecessary null checks in flutter/test (#118905) 2023-01-20 22:09:06 +00:00
Michael Goderbauer
81bc54be75
Enable use_colored_box lint (#117370) 2022-12-20 14:09:55 -08:00
Michael Goderbauer
bf5fdb9f96
Reland "Inject current FlutterView into tree and make available via View.of(context) (#116924)" (#117244)
* Reland "Inject current `FlutterView` into tree and make available via `View.of(context)` (#116924)"

This reverts commit 9102f2fe0bd26db6074ac4a17785296cd341ecb9.

* remove window placeholder
2022-12-17 06:14:19 +00:00
Casey Hillers
9102f2fe0b
Revert "Inject current FlutterView into tree and make available via View.of(context) (#116924)" (#117214)
This reverts commit a34e41948461de77bdec3dcc884900cd4544abb1.
2022-12-16 17:48:23 +00:00
Michael Goderbauer
a34e419484
Inject current FlutterView into tree and make available via View.of(context) (#116924)
* enable View.of

* tests

* ++

* greg review

* rewording

* hide view from public
2022-12-16 00:13:56 +00:00
Michael Goderbauer
2b9beda0d0
Reland "Keep dirty manipulations private to Element base class (#109401)" (#109562) 2022-08-15 19:59:13 +00:00
Greg Spencer
7887ca5bb5
Revert "Keep dirty manipulations private to Element base class (#109401)" (#109481)
Landing on red to green the build.
2022-08-12 18:28:24 -07:00
Michael Goderbauer
a624cb71b3
Keep dirty manipulations private to Element base class (#109401) 2022-08-12 12:54:03 -07:00
Ian Hickson
7ded3d91da
API documentation cleanup (#108500) 2022-08-10 22:03:20 +00:00
Michael Goderbauer
ed0c8d77f8
Remove some outdated ignores from framework (#108915) 2022-08-03 22:42:06 +00:00
Kenzie Davisson
1b2ee411aa
Sort diagnostics node dependencies so that order is stable (#105319)
* Sort diagnostics node dependencies so that order is stable

* use toDescription

* use toStringShort when possible

* sort InheritedElements
2022-06-06 07:55:09 -07:00
gaaclarke
18713e0c5d
Made Directionality forego dependency tracking for better performance. (#102336) 2022-04-25 15:39:05 -07:00
Michael Goderbauer
51bcdb9407
super parameters for framework (#100905) 2022-04-13 22:38:40 -07:00
Ian Hickson
ab89ce285f
Clean up the bindings APIs. (#89451) 2022-02-03 14:55:15 -08:00
chunhtai
28ca7bd789
Allow current leader of layerlink to detach before the previous leade… (#96810) 2022-01-24 11:50:11 -08:00
Jonah Williams
dafda50c6a
[framework] remove hashcode override for Element (#96644) 2022-01-14 15:45:18 -08:00
Anis Alibegić
a753d09cc9
Fixed several typos (#89485) 2021-09-07 14:56:04 -07:00
Darren Austin
e2fb5cc318
Updated skipped tests for widgets directory. (#87879) 2021-08-09 15:05:44 -07:00
Ren You
3dea9f0251
Revert "Clean up the bindings APIs (#86438)" (#86484)
This reverts commit d056500bfe6a712cdace450d06c4a8fb2290e63a.
2021-07-15 09:29:16 -07:00
Ian Hickson
d056500bfe
Clean up the bindings APIs (#86438) 2021-07-14 14:41:24 -07:00
Zachary Anderson
7f741e9181
Revert "Clean up the bindings APIs (#86388)" (#86404)
This reverts commit 31de052e3fddb4909ff88172a6937db7f3dc49db.
2021-07-13 21:32:29 -07:00
Ian Hickson
31de052e3f
Clean up the bindings APIs (#86388) 2021-07-13 18:31:11 -07:00