…add support for runtime transformations (flutter/flutter#175535)

…add support for runtime transformations (flutter/flutter#175535)

…add support for runtime transformations (flutter/flutter#175535)

…add support for runtime transformations (flutter/flutter#175535)

…add support for runtime transformations (flutter/flutter#175535)

…add support for runtime transformations (flutter/flutter#175535)

…add support for runtime transformations (flutter/flutter#175535)

…add support for runtime transformations (flutter/flutter#175535)

…add support for runtime transformations (flutter/flutter#175535)

…10067)

Manual roll requested by [email protected]

flutter/flutter@9ff2767...4a04204

2025-09-23 [email protected] Simplify asserts in `FlutterMutatorTest` (flutter/flutter#175730)
2025-09-23 [email protected] Improve code quality in `AccessibilityBridgeTest.java` (flutter/flutter#175718)
2025-09-23 [email protected] Fix linter issues in `VsyncWaiterTest` Capital L for long values (flutter/flutter#175780)
2025-09-23 [email protected] Fix wrong order of asserts arguments (flutter/flutter#175726)
2025-09-23 [email protected] Simplify test asserts and use lambdas  (flutter/flutter#175727)
2025-09-23 [email protected] Remove unused imports, fix assertion order, add non null annotations to `ImageReaderPlatformViewRenderTargetTest.java` (flutter/flutter#175723)
2025-09-23 [email protected] Remove unnecessary `String.valueOf` in `KeyboardManager.java` (flutter/flutter#175502)
2025-09-23 [email protected] Fix outdated link of `intl` package to point to the correct new location  (flutter/flutter#174498)
2025-09-23 [email protected] Roll Packages from 45c9a84 to 3413b65 (4 revisions) (flutter/flutter#175854)
2025-09-23 [email protected] Fix typo in tests `README` (flutter/flutter#175788)
2025-09-23 [email protected] Update maximum known Gradle version to 9.1.0 (flutter/flutter#175543)
2025-09-23 [email protected] Roll Dart SDK from 9e943fe076c8 to 14b4ced3022a (5 revisions) (flutter/flutter#175843)
2025-09-23 [email protected] Document how to hide counter in TextField.maxLength (flutter/flutter#175797)
2025-09-23 [email protected] [a11y-app] Fix Autocomplete semantics label (flutter/flutter#175409)
2025-09-23 [email protected] Roll Fuchsia Linux SDK from CcCe3HpQtBYhTZscb... to naeytagBIBEpKgZNZ... (flutter/flutter#175824)
2025-09-23 [email protected] Roll Skia from a38a531dec1d to cabeab8cb22c (16 revisions) (flutter/flutter#175822)
2025-09-23 [email protected] Load fonts in the order addFont is called (flutter/flutter#174253)
2025-09-22 [email protected] Roll pub packages (flutter/flutter#175545)
2025-09-22 [email protected] Remove `name` field form `SupportedPlatform` enum (flutter/flutter#175611)
2025-09-22 [email protected] [web] Cleanup opportunities post renderer unification (flutter/flutter#174659)
2025-09-22 [email protected] Update `KeyChannelResponder.java`  to use method reference  (flutter/flutter#175510)
2025-09-22 [email protected] Update docs/engine/contributing/Compiling-the-engine.md with macOS build steps (flutter/flutter#175716)
2025-09-22 [email protected] [ Widget Preview ] Allow for custom `Preview` annotations, add support for runtime transformations (flutter/flutter#175535)
2025-09-22 [email protected] Remove unnecessary public modifier in `KeyboardManager.java` (flutter/flutter#175500)
2025-09-22 [email protected] bump robolectric and java to 21 (flutter/flutter#175550)
2025-09-22 [email protected] Fix: Update docs tool tag to sample in ImageProvider (flutter/flutter#175256)
2025-09-22 [email protected]  Roll Packages from 3d5c419 to 45c9a84 (flutter/flutter#175794)
2025-09-21 [email protected] Correctly implement PlatformViews' cursors on Web (flutter/flutter#174300)

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…t for runtime transformations (flutter#175535)

This change updates `Preview` to be a `base` class instead of `final`,
allowing for developers to extend `Preview` and create their own custom
preview annotations.

To reduce friction associated with working with `const` constructors,
two new methods have been added: `MultiPreview.transform()` and
`Preview.transform()`. These methods are invoked at runtime by the
preview environment, allowing for developers to create or modify
`Preview` instances with non-constant values. This also relaxes
restrictions around `Preview`'s callback parameters (e.g., `wrapper`),
which do not need to be static or public when provided to a `Preview` in
the context of a `*.transform()` method. This makes it possible to
create custom preview classes that completely encapsulate their
callbacks, removing the need for separate public, static function
declarations.

To make transforming `Preview`s simpler, a `PreviewBuilder` utility
class has also been added.

Fixes flutter#175534

…add support for runtime transformations (flutter/flutter#175535)

…t for runtime transformations (flutter#175535)

This change updates `Preview` to be a `base` class instead of `final`,
allowing for developers to extend `Preview` and create their own custom
preview annotations.

To reduce friction associated with working with `const` constructors,
two new methods have been added: `MultiPreview.transform()` and
`Preview.transform()`. These methods are invoked at runtime by the
preview environment, allowing for developers to create or modify
`Preview` instances with non-constant values. This also relaxes
restrictions around `Preview`'s callback parameters (e.g., `wrapper`),
which do not need to be static or public when provided to a `Preview` in
the context of a `*.transform()` method. This makes it possible to
create custom preview classes that completely encapsulate their
callbacks, removing the need for separate public, static function
declarations.

To make transforming `Preview`s simpler, a `PreviewBuilder` utility
class has also been added.

Fixes flutter#175534

…t for runtime transformations (flutter#175535)

This change updates `Preview` to be a `base` class instead of `final`,
allowing for developers to extend `Preview` and create their own custom
preview annotations.

To reduce friction associated with working with `const` constructors,
two new methods have been added: `MultiPreview.transform()` and
`Preview.transform()`. These methods are invoked at runtime by the
preview environment, allowing for developers to create or modify
`Preview` instances with non-constant values. This also relaxes
restrictions around `Preview`'s callback parameters (e.g., `wrapper`),
which do not need to be static or public when provided to a `Preview` in
the context of a `*.transform()` method. This makes it possible to
create custom preview classes that completely encapsulate their
callbacks, removing the need for separate public, static function
declarations.

To make transforming `Preview`s simpler, a `PreviewBuilder` utility
class has also been added.

Fixes flutter#175534