5866 Commits

Author SHA1 Message Date
Valentin Vignal
5644c032b3
Add test for selection_container_disabled.0.dart (#156934)
Contributes to https://github.com/flutter/flutter/issues/130459

It adds a test for
- `examples/api/test/material/selection_container/selection_container_disabled.0_test.dart`
2024-10-16 16:59:38 +00:00
Kate Lovett
7b0b03bc0d
Adjust timeout for devicelab tests (#156553)
Fixes https://github.com/flutter/flutter/issues/156456

There is a known long running test that has been bumping up against the default timeout. This adjusts the perTestTimeout for the devicelab tests to add 15 seconds to stop this from flaking.

The test is question: 82ebb74c64/dev/devicelab/test/run_test.dart (L76)

`test/run_test.dart: run.dart script prints a message after a few seconds when failing to connect (this test takes >10s)`
2024-10-15 20:47:03 +00:00
Jonah Williams
4505e00bf2
[devicelab] try waiting for first frame. (#156907)
From testing locally, sometimes the first frame rasterization takes longer. Could be related to https://github.com/flutter/flutter/issues/156903
2024-10-15 20:37:09 +00:00
Rexios
e96aaab5e0
Add padding options to SearchAnchor (#152508)
Cherry-picked padding changes from https://github.com/flutter/flutter/pull/148856

Adds padding configuration options to `SearchAnchor`. This PR adds the following:
- `viewBarPadding`: The padding for items inside the `SearchBar` in the `SearchAnchor` view
- `viewPadding`: The padding to use around the entire `SearchAnchor` view

Working towards https://github.com/flutter/flutter/issues/148852
2024-10-15 20:24:48 +00:00
Valentin Vignal
6829c6a9b9
Add tests for material_state_outlined_border.0.dart (#156814)
Contributes to https://github.com/flutter/flutter/issues/130459

It adds a test for
- `examples/api/test/material/material_state/material_state_outlined_border.0_test.dart`
2024-10-15 14:36:36 +00:00
Valentin Vignal
5d06db6aad
Add test for material_state_property.0.dart (#156719)
Contributes to https://github.com/flutter/flutter/issues/130459

It adds a test for
- `examples/api/test/material/material_state/material_state_property.0_test.dart`
2024-10-15 12:10:21 +00:00
Ildeberto Vasconcelos
ba778dea6d
Add test for AutofillGroup api example (#156439)
Write Tests for API Examples of `autoffil_group`  as part  of https://github.com/flutter/flutter/issues/130459

This are tests of snippets used in [AutofillGroup class](https://api.flutter.dev/flutter/widgets/AutofillGroup-class.html)
2024-10-12 13:54:31 +00:00
Jonah Williams
56e2a9d380
[devicelab] remove raster cache benchmarks. (#156600)
Death to the raster cache!
2024-10-11 19:46:21 +00:00
auto-submit[bot]
c1a301e8e8
Reverts "Manual pub roll (#156549)" (#156607)
Reverts: flutter/flutter#156549
Initiated by: christopherfujino
Reason for reverting: https://github.com/flutter/flutter/issues/156606
Original PR Author: christopherfujino

Reviewed By: {matanlurey}

This change reverts the following previous change:
I manually ran:

```
flutter update-packages --force-upgrade
cd dev/tools && dart bin/generate_gradle_lockfiles.dart --no-gradle-generation --no-exclusion
```

Note this bumps the `google_mobile_ads` plugin, which caused https://github.com/flutter/flutter/issues/156474. I expect it to work this time after https://flutter-review.googlesource.com/c/recipes/+/60340
2024-10-11 18:52:18 +00:00
Christopher Fujino
184deff0f2
Manual pub roll (#156549)
I manually ran:

```
flutter update-packages --force-upgrade
cd dev/tools && dart bin/generate_gradle_lockfiles.dart --no-gradle-generation --no-exclusion
```

Note this bumps the `google_mobile_ads` plugin, which caused https://github.com/flutter/flutter/issues/156474. I expect it to work this time after https://flutter-review.googlesource.com/c/recipes/+/60340
2024-10-11 17:57:36 +00:00
Jonah Williams
f1f83aa909
[devicelab] handle missed lifecycle messages. (#156596)
This test waits on the application to print a message before
continuting, but that message does not reach the test post UI/platform
thread merge.

The test otherwise seems to function fine, and the app isn't crashing.
2024-10-11 09:34:24 -07:00
Valentin Vignal
96c761c1a6
Add test for animated list example (#156452)
Contributes to https://github.com/flutter/flutter/issues/130459

It adds a test for
- `examples/api/lib/widgets/animated_list/animated_list.0.dart`
2024-10-10 15:48:17 +00:00
gaaclarke
5c6e3f03c0
Started handling duplicate validation layer messages (#156375)
fixes https://github.com/flutter/flutter/issues/151528

Those tests were failing because the validation layers messages were
printing out twice. This now only starts failing if a backend is
reported that is not vulkan with validation layers. See
https://github.com/flutter/flutter/issues/151528#issuecomment-2398189205

## 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
2024-10-09 08:40:04 -07:00
auto-submit[bot]
0403c1cb8f
Reverts "Roll pub packages (#156440)" (#156473)
Reverts: flutter/flutter#156440
Initiated by: zanderso
Reason for reverting: Failing in post submit with
```
[2024-10-08 18:00:22.743647] [STDOUT] stdout:                [!] CocoaPods could not find compatible versions for pod "Google-Mobile-Ads-SDK":
[2024-10-08 18:00:22.743695] [STDOUT] stdout:                  In Podfile:
[2024-10-08 18:00:22.743718] [STDOUT] stdout:                    google_mobile_ads (from `.symlinks/plugins/google_mobile_ads/ios`) was resolved t
Original PR Author: flutter-pub-roller-bot

Reviewed By: {fluttergithubbot}

This change reverts the following previous change:
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-09 13:45:47 +00:00
flutter-pub-roller-bot
f96d1618c4
Roll pub packages (#156440)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-08 23:28:01 +00:00
flutter-pub-roller-bot
b9e71f7d12
Roll pub packages (#156284)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-08 22:01:03 +00:00
Jason Simmons
34457fe1f5
Roll Dartdoc to 8.2.0 (#156426)
This is needed for compatibility with recent versions of the analyzer package that have removed some APIs. (see 8100ccf1c1)
2024-10-08 18:55:11 +00:00
flutter-pub-roller-bot
d6725e7c01
Roll pub packages (#156254)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-04 22:47:16 +00:00
flutter-pub-roller-bot
1371d9d916
Roll pub packages (#156215)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-04 11:59:31 +00:00
flutter-pub-roller-bot
be792afc51
Roll pub packages (#156159)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-03 18:32:06 +00:00
Nate Wilson
5ecf10052f
pattern-matching refactor (#154753)
This pull request aims to improve code readability, based on feedback gathered in a recent design doc.

<br>

There are two factors that hugely impact how easy it is to understand a piece of code: **verbosity** and **complexity**.

Reducing **verbosity** is important, because boilerplate makes a project more difficult to navigate. It also has a tendency to make one's eyes gloss over, and subtle typos/bugs become more likely to slip through.

Reducing **complexity** makes the code more accessible to more people. This is especially important for open-source projects like Flutter, where the code is read by those who make contributions, as well as others who read through source code as they debug their own projects.

<hr>

<br>

The following examples show how pattern-matching might affect these two factors:

<details> <summary><h3>Example 1 (GOOD)</h3> [click to expand]</summary>

```dart
if (ancestor case InheritedElement(:final InheritedTheme widget)) {
  themes.add(widget);
}
```

Without using patterns, this might expand to

```dart
if (ancestor is InheritedElement) {
  final InheritedWidget widget = ancestor.widget;
  if (widget is InheritedTheme) {
    themes.add(widget);
  }
}
```

Had `ancestor` been a non-local variable, it would need to be "converted" as well:

```dart
final Element ancestor = this.ancestor;
if (ancestor is InheritedElement) {
  final InheritedWidget inheritedWidget = ancestor.widget;
  if (widget is InheritedTheme) {
    themes.add(theme);
  }
}
```

</details>

<details> <summary><h3>Example 2 (BAD) </h3> [click to expand]</summary>

```dart
if (widget case PreferredSizeWidget(preferredSize: Size(:final double height))) {
  return height;
}
```

Assuming `widget` is a non-local variable, this would expand to:

```dart
final Widget widget = this.widget;
if (widget is PreferredSizeWidget) {
  return widget.preferredSize.height;
}
```

<br>

</details>

In both of the examples above, an `if-case` statement simultaneously verifies that an object meets the specified criteria and performs a variable assignment accordingly.

But there are some differences: Example 2 uses a more deeply-nested pattern than Example 1 but makes fewer useful checks.

**Example 1:**
- checks that `ancestor` is an `InheritedElement`
- checks that the inherited element's `widget` is an `InheritedTheme`

**Example 2:**
- checks that `widget` is a `PreferredSizeWidget`
(every `PreferredSizeWidget` has a `size` field, and every `Size` has a `height` field)

<br>

<hr>

I feel hesitant to try presenting a set of cut-and-dry rules as to which scenarios should/shouldn't use pattern-matching, since there are an abundance of different types of patterns, and an abundance of different places where they might be used.

But hopefully the conversations we've had recently will help us converge toward a common intuition of how pattern-matching can best be utilized for improved readability.

<br><br>

- resolves https://github.com/flutter/flutter/issues/152313
- Design Doc: [flutter.dev/go/dart-patterns](https://flutter.dev/go/dart-patterns)
2024-10-03 18:21:04 +00:00
Alexander Aprelev
661f53ddd4
Add back main() methods to benchmark benches. (#156083)
Dart performance suite needs this since it builds and launches those flutter benchmarks independently

Cf. https://github.com/flutter/flutter/pull/154446
2024-10-02 16:23:47 -07:00
flutter-pub-roller-bot
a9047e93bc
Roll pub packages (#156117)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-02 23:01:09 +00:00
flutter-pub-roller-bot
4ad274720f
Roll pub packages (#156114)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-02 21:12:16 +00:00
Ben Konyi
2c84e63ba7
[ Cocoon ] Wait for task results to be received by the task runner before shutting down the task process (#156002)
Prior to this fix, `_TaskRunner.run` would immediately cleanup the
keep-alive port once the task completed, which would result in the
isolate shutting down as soon as the task result was returned from
`ext.cocoonRunTask` callback in the form of a
`ServiceExtensionResponse`. Since the service extension response is
processed by the service isolate, it was possible for the VM to start
shutting down before the service isolate could send the task result data
back to the task runner.

This change introduces a new service extension,
`ext.cocoonTaskResultReceived`, that the task runner invokes after it
receives the task result from `ext.cocoonRunTask`, notifying the task
process that it can close the keep-alive port and shutdown.

Fixes https://github.com/flutter/flutter/issues/155475
2024-10-02 17:01:24 -04:00
flutter-pub-roller-bot
33baedab60
Roll pub packages (#156105)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-02 19:18:54 +00:00
flutter-pub-roller-bot
b10be95a52
Roll pub packages (#156030)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-02 00:15:24 +00:00
flutter-pub-roller-bot
d59499988a
Roll pub packages (#155846)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-10-01 22:45:08 +00:00
Qun Cheng
33d3e4bda6
Reland TabBarTheme normalization (#155969)
Reland https://github.com/flutter/flutter/pull/155476 with test fix.

The test fix uses the method mentioned in https://github.com/flutter/flutter/pull/155476#issuecomment-2377287606.
2024-10-01 20:13:52 +00:00
Mikhail Novoseltsev
0975e612c0
[tool][android] Allow --target-platform work properly with --debug mode (#154476)
This PR addresses an issue where the `--target-platform` flag was not being respected when building APKs in debug mode. Previously, debug builds would always include `x86` and `x64` architectures, regardless of the specified target platform. This change ensures that the `--target-platform` flag is honored across all build modes, including debug.

To achieve this, `BuildApkCommand` has been slightly changed to become responsible for list of archs that should be built in the current run,rather than just parsing arguments. Previously, this responsibility was distributed to gradle, which could be frustrating (in my opinion)

Fixes #153359
2024-10-01 15:24:53 +00:00
Denis Gordin
31d6b35b7f
Move FlutterLogo from material to widget (#155864)
The PR is moving FlutterLogo from `lib/src/material` to `lib/src/widgets` because it has no dependency on Material.

Issue: https://github.com/flutter/flutter/issues/154448

PS: There is [older PR](https://github.com/flutter/flutter/pull/154711) for this issue and I don't know the policy on conflicting PRs. Let me know if I need to drop mine.
2024-09-30 17:19:25 +00:00
Gray Mackall
cad7418f0a
Roll packages manually (#155786)
*Replace this paragraph with a description of what this PR is changing or adding, and why. Consider including before/after screenshots.*

*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].*
2024-09-27 00:49:08 +00:00
Gray Mackall
5b32f33271
Use flutter from in same repo (not path) in generate_gradle_lockfiles.dart (again) (#155794)
Fixes another invocation of `flutter`. Follow up to https://github.com/flutter/flutter/pull/155790/.

Checked that this is the only other one (and also the only use of `exec()` left that is relying on the path and shouldn't be (one other use uses git from the path, which is fine, and the other one uses an absolute path).
2024-09-27 00:13:27 +00:00
Gray Mackall
2c0a4f2d44
Use flutter from in same repo (not path) in generate_gradle_lockfiles.dart (#155790)
Should hopefully fix https://github.com/flutter/flutter/issues/155704 🙏
2024-09-26 22:58:06 +00:00
auto-submit[bot]
1c9607fc9c
Reverts "Normalize TabBarTheme (#155476)" (#155698)
Reverts: flutter/flutter#155476
Initiated by: eyebrowsoffire
Reason for reverting: The newly added tests are failing in postsubmit. See https://ci.chromium.org/ui/p/flutter/builders/prod/Windows%20framework_tests_libraries/19062/overview
Original PR Author: QuncCccccc

Reviewed By: {TahaTesser}

This change reverts the following previous change:
This PR is to make preparations to make `TabBarTheme` conform to Flutter's conventions for component themes:

* Added a `TabBarThemeData` class which defines overrides for the defaults for `TabBar` properties.
* Added 2 `TabBarTheme` constructor parameters: `TabBarThemeData? data` and `Widget? child`. This is now the preferred way to configure a `TabBarTheme`:
```
TabBarTheme(
  data: TabBarThemeData(labelColor: xxx, indicatorColor: xxx, ...),
  child: TabBar(...)
)
```
  These two properties are made nullable to not break existing apps which has customized `ThemeData.tabBarTheme`.

* Changed the type of component theme defaults from `TabBarTheme` to `TabBarThemeData`.

TODO:

* Fix internal failures.
* Change the type of `ThemeData.tabBarTheme` from `TabBarTheme` to `TabBarThemeData`. This may cause breaking changes, a migration guide will be created.

Addresses the "theme normalization" sub project within https://github.com/flutter/flutter/issues/91772
2024-09-25 17:50:18 +00:00
Qun Cheng
f310625bc6
Normalize TabBarTheme (#155476)
This PR is to make preparations to make `TabBarTheme` conform to Flutter's conventions for component themes:

* Added a `TabBarThemeData` class which defines overrides for the defaults for `TabBar` properties.
* Added 2 `TabBarTheme` constructor parameters: `TabBarThemeData? data` and `Widget? child`. This is now the preferred way to configure a `TabBarTheme`:
```
TabBarTheme(
  data: TabBarThemeData(labelColor: xxx, indicatorColor: xxx, ...),
  child: TabBar(...)
)
```
  These two properties are made nullable to not break existing apps which has customized `ThemeData.tabBarTheme`.

* Changed the type of component theme defaults from `TabBarTheme` to `TabBarThemeData`.

TODO:

* Fix internal failures.
* Change the type of `ThemeData.tabBarTheme` from `TabBarTheme` to `TabBarThemeData`. This may cause breaking changes, a migration guide will be created.

Addresses the "theme normalization" sub project within https://github.com/flutter/flutter/issues/91772
2024-09-25 17:19:00 +00:00
flutter-pub-roller-bot
db76401cd8
Roll pub packages (#155640)
This PR was generated by `flutter update-packages --force-upgrade`.
2024-09-25 00:03:57 +00:00
Parker Lougheed
22570daa18
Misc docs cleanup and fixes (#155501) 2024-09-24 20:03:08 +00:00
Daco Harkes
aef2758716
[native assets] Roll dependencies (#155432)
Rolls native deps to the latest version, and cleans up deprecated field from template.

Tests:

* All the unit and integration tests for native assets. The template and dependencies are exercised in the integration test.

Since `package:native_assets_builder` already checks for having no static libraries as output, the custom check in flutter_tools is removed. The tests stubbing out the native assets builder exercising the custom check are also removed. (The integration tests now check for the error message from the native assets builder.)
2024-09-24 07:19:09 +00:00
gaaclarke
1ed8a0a0fd
Redo flutter engine flutter autoroll bd3d1990 485b 419c 8c55 b27e3eeb15ed 1727117767 (#155579)
fixes https://github.com/flutter/flutter/issues/155578
A manual roll for https://github.com/flutter/flutter/pull/155560
2024-09-24 00:21:06 +00:00
Sam Rawlins
ec28b057f2
create_api_docs.dart: correct command logging (#155226)
The tool currently prints that the _dart_ command is run, and does not include the 'pub' sub-command. Something like:

```none
/private/var/folders/72/ltck4q353hsg3bn8kpkg7f84005w15/T/flutterzXpww6/bin/dart \
    global run --enable-asserts dartdoc
```

(newline mine)

But this is incorrect; the `runPubGet` function runs the _flutter_ command, and prepends `pub` to the list of arguments.
2024-09-22 16:01:41 +00:00
John McDole
93eabf3558
Uninstall /can fail/ (#155314)
Error != Exception.

Fixes #149666
2024-09-17 19:17:06 +00:00
Denis Bowen
47aed96ca1
text button case rework (#154943)
Rework on the text button use case to pass [b/347102786](https://b.corp.google.com/347102786), 

After talking with the tester, it seems like there isn't an issue with the A11y of the text button, rather just how the test case is set up. In order for the text case to pass, there needs to be real time feedback of an action that is done by pressing the text button (think of a dialog popup, or form submission notification). 

So I rewrote the test case to mimic a simple form with a submit button that once submitted, will let the user know it is submitted with a snack bar notification. https://screencast.googleplex.com/cast/NTM0ODc1NDIxMDE2MDY0MHwzYWI4MTZhMS1hMA
2024-09-13 19:11:08 +00:00
John McDole
b755641559
Address frame policy benchmark flakes (#155130)
Recently the microbenchmarks were flakey, but from an older bug. Turns out, `LiveTestWidgetsFlutterBindingFramePolicy` is defaulted to `fadePointers` with this fun note:

> This can result in additional frames being pumped beyond those that
the test itself requests, which can cause differences in behavior

Both `text_intrinsic_bench` and `build_bench` use a similar pattern:
* Load stocks app
* Open the menu
* Switch to `benchmark` frame policy

What happens, rarely, is that
`LiveTestWidgetsFlutterBinding.pumpBenchmark()` will call (async) `handleBeginFrame` and `handleDrawFrame`. `handleDrawFrame` juggles a tri-state boolean (null, false, true). This boolean is only reset to `null` when handleDrawFrame is called back to back, say, from an extra frame that was scheduled.

1. Switch tri-state boolean to an enum, its easier to read
2. remove asserts that compile away in benchmarks (`--profile`)
3. use `Error.throwWithStackTrace` to keep stack traces.

I've been running this test on device lab hardware for hundreds of runs and have not hit a failure yet.

Fixes #150542
Fixes #150543 - throw stack!
2024-09-12 23:19:15 +00:00
Gray Mackall
303f222e17
Manual roll to 48ddaf578fb0c8326d5b4b680b0f49ea72e33216 (#155070)
Manual roll, because https://github.com/flutter/engine/pull/55095 updates dependencies, and so it needs gradle lockfiles re generated.
2024-09-12 17:58:12 +00:00
Reid Baker
90aa59f6c3
Externalize and update onboarding instructions (#154730)
Part 1/n #154724 

## 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 `///`).
- [ ] 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: Tirth <pateltirth454@gmail.com>
Co-authored-by: Navaron Bracke <brackenavaron@gmail.com>
2024-09-12 13:14:53 -04:00
Matan Lurey
5d5e633c44
Move (dev/tools), complete v0 of native_driver (Android) (#154843)
**This is a WIP**, and the only reason it is not a draft PR is so that Flutter (Skia) Gold is executed.

---

Closes https://github.com/flutter/flutter/issues/148269.

Work towards https://github.com/flutter/flutter/issues/148269.
2024-09-11 23:56:21 +00:00
Matan Lurey
0e6c16c27a
Migrate apple-mobile-web-* to mobile-web-*. (#154964)
Closes https://github.com/flutter/flutter/issues/154596.

It's less clear to me if your goal was to migrate _all_ of these btw:
https://github.com/search?q=org%3Aflutter+%22mobile-web-app-capable%22&type=code
2024-09-11 00:39:51 +00:00
John McDole
1c3b501f53
Missing benchmarks for foundation/all_elements_bench.dart (#154954)
I missed awaiting a future. Probably should have a lint for unawaited futures...
2024-09-10 23:01:09 +00:00
Matan Lurey
4b5cf85534
Remove last --disable-dart-dev in flutter/flutter. (#154948)
Work towards https://github.com/flutter/flutter/issues/154268.
2024-09-10 21:37:08 +00:00