* add trailing commas on list/map/parameters

* add trailing commas on Invocation with nb of arg>1

* add commas for widget containing widgets

* add trailing commas if instantiation contains trailing comma

* revert bad change

Fix the spelling errors in the dartdocs for the framework.

There are no functionality changes here, just documentation fixes.

* Update flat_button.dart

* Added smaple code for Flat Button

* Update flat_button.dart

* Revert "Update flat_button.dart"

This reverts commit c8f00dff39e18b267295890bd0c5a86979b58c24.

* Revert "Added smaple code for Flat Button"

This reverts commit adc4234bc7956293a5b56f39701c6967fe3e919a.

* Update flat_button.dart

* Update flat_button.dart

* Update flat_button.dart

* remove white spaces

* remove white spaces

* add two different samples

* Update flat_button.dart

* Added code snippet for TextField class. ref:#21136

* Errant semicolon

Added a unit test to check that the tick marks are skipped over when the divisions are set to a number that makes them less than 6dp away from each other.

Breaks the moveBy call from drag and dragFrom into two separate calls and changes the default behavior of DragStartBehavior to DragStartBehavior.start (#26438)

* Breaking change which sets the default DragStartBehavior to DragStartBehavior.start and changes WidgetTester.drag and WidgetTester.dragFrom by breaking the moveBy function call into multiple pieces.

* Allow app bar actions to be themed independently if needed

* Update SliverAppBar docs that were out of date

* Clarify fallback behavior in a comment

* Analyzer

* Address PR feedback

* Address PR feedback

* Put back checks on actions icon theme

* Address PR feedback

* Retrigger CI

[Material] Add ability to set shadow color and selected shadow color for chips and for chip themes (#28163)

* Add ability to set shadow color for chips and for chip themes

* Add selected shadow color as a property as well

* Update phrasing of documentation

* Address PR feedback

This converts all remaining "## Sample code" segments into snippets, and fixes
the snippet generator to handle multiple snippets in the same dartdoc block
properly.

I also generated, compiled, and ran each of the existing application samples,
and fixed them up to be more useful and/or just run without errors.

This PR fixes these problems with examples:

1. Switching tabs in a snippet now works if there is more than one snippet in
   a single dartdoc block.
2. Generation of snippet code now works if there is more than one snippet.
3. Contrast of text and links in the code sample block has been improved to
   recommended levels.
4. Added five new snippet templates, including a "freeform" template to make
   it possible to show examples that need to change the app instantiation.
5. Fixed several examples to run properly, a couple by adding the "Scaffold"
   widget to the template, a couple by just fixing their code.
6. Fixed visual look of some of the samples when they run by placing many
   samples inside of a Scaffold.
7. In order to make it easier to run locally, changed the sample analyzer to
   remove the contents of the supplied temp directory before running, since
   having files that hang around is problematic (only a problem when running
   locally with the `--temp` argument).
8. Added a `SampleCheckerException` class, and handle sample checking
   exceptions more gracefully.
9. Deprecated the old "## Sample code" designation, and added enforcement for
   the deprecation.
10. Removed unnecessary `new` from templates (although they never appeared in
   the samples thanks to dartfmt, but still).

Fixes #26398
Fixes #27411

* Fixes offset and unblocks roll

* Update stepper.dart

Added 'physics' prop which allows the developer to assign the Stepper's scroll view's 'ScrollPhysics' which can solve with unwanted scrolling behaviour if the parent is also a scroll view. Defaults to 'AlwaysScrollableScrollPhysics' if null.

* Update stepper.dart

Removed unnecessary import and defaulting to 'AlwaysScrollableScrollPhysics' if physics prop is null.

* Update stepper.dart

Ran through format to remove unwanted whitespace which Analysis isn't happy about.

* Update stepper.dart

Tried reformatting again.

* Update stepper.dart

Tried reformatting again.

* Update stepper.dart

Formatting again why do you hate me github editor.

* Update stepper.dart

* Update stepper.dart

if this format doesn't work i'll cry

* Update stepper_test.dart

Added Stepper scroll tests. One that fails to find Text after Stepper if physics left as null and one that succeeds if physics set to `ClampingScrollPhysics()`

* Update stepper_test.dart

Added const constructors

* Update stepper_test.dart

trying to get rid of whitespace again

* Update stepper_test.dart

* Update stepper_test.dart

why whitespace why

* Update stepper_test.dart

* Update stepper_test.dart

* Update stepper_test.dart

* Update stepper_test.dart

Swapped to `findsNothing` because I'm an idiot.

* Update stepper_test.dart

* Update stepper.dart

[Material] Update the card demo in the Gallery to demonstrate different uses of the Card widget (#27699)

Additionally, this adds a tappable Card example to the Card documentation.

* Provide a simmplified API for skipping over slider thumb, overlay, and tick mark painting

* doc fixes

* comments

* comments

* comments

* comments

* comments

* analyzer

* comments

This adds support for logical and physical key information inside of RawKeyEvent. This allows developers to differentiate keys in a platform-agnostic way. They are able to tell the physical location of a key (PhysicalKeyboardKey) and a logical meaning of the key (LogicalKeyboardKey), as well as get notified of the character generated by the keypress. All of which is useful for handling keyboard shortcuts.

This PR builds on the previous PR (#27620) which generated the key code mappings and definitions.

These changes are **backwards incompatible**. Tests that verify OutlineButton visuals, for example golden image tests, will need to be updated.