* a11y: implement new SemanticsAction "showOnScreen" (v2)
This action is triggered when the user swipes (in accessibility mode) to the last visible item of a scrollable list to bring that item fully on screen.
This requires engine rolled to flutter/engine#3856.
I am in the process of adding tests, but I'd like to get early feedback to see if this approach is OK.
* fix null check
* review comments
* review comments
* Add test
* fix analyzer warning
On Fuchsia, the system compositor is responsible for drawing shadows
for physical model layers with non-zero elevation.
Also fixed a bug where _needsCompositing was not being cleared prior
to updating it.
* Ensure that a frame is allways scheduled when a RenderObject marks itself as needing a semantics update
Fixes issue 2 described in https://github.com/flutter/flutter/issues/10971
Previously, an object could call `markNeedsSemanticsUpdate` and its wish would never be granted because no frame was scheduled that would actually update the semantics. This caused an issue during scrolling on Android where at the end of the scroll the `RenderIgnorePointer` would stop blocking the semantics of the scrolled view, call `markNeedsSemanticsUpdate`, but then no frame was scheduled to actually put the semantics of the scrolled view back into the semantics tree. That made the scrolled view unusable for a11y users.
At first I was a bit wary to call `requestVisualUpdate` within `markNeedsSemanticsUpdate` because technically the visual is fine, we only need the frame it schedules to update the semantics. However, it seems like we are using `requestVisualUpdate` for exactly that purpose in other places already where we just need an update to the semantics (e.g. 76a50fe0ca/packages/flutter/lib/src/rendering/object.dart (L2408)).
* add tests
* Make the drag resistance non-linear
* Let the easing of overscroll have a spring effect too
* Add tests and prevent possible drift by having a slightly smaller resistance when easing the overscroll
* lint
* AutomaticKeepAlive
A Widget that listens for notifications from widgets that don't want to die.
* Automatically wrap SliverList and SliverGrid children in AutomaticKeepAlive widgets
* Fixes for review comments
* Use defaultTargetPlatform instead of Platform.operatingSystem for ImageProvider.
Add convenience helper to make it easier to display a short string for
an enums value.
* Add comment linking to issue.
* Prefix and Suffix support for TextFields
* Adding Tests
* Removing spurious newline.
* Fixing a small problem with the test
* Code review changes
* Code Review Changes
* Review Changes
* Export the new StrokeJoin enum
* Added example for line styles, and enabled line join styles.
* Reverting inadvertent change to main.dart.
* Updated due to code review of engine code
* Removed example.
The main purpose of this PR is to make it so that when you set the
initial route and it's a hierarchical route (e.g. `/a/b/c`), it
implies multiple pushes, one for each step of the route (so in that
case, `/`, `/a`, `/a/b`, and `/a/b/c`, in that order). If any of those
routes don't exist, it falls back to '/'.
As part of doing that, I:
* Changed the default for MaterialApp.initialRoute to honor the
actual initial route.
* Added a MaterialApp.onUnknownRoute for handling bad routes.
* Added a feature to flutter_driver that allows the host test script
and the device test app to communicate.
* Added a test to make sure `flutter drive --route` works.
(Hopefully that will also prove `flutter run --route` works, though
this isn't testing the `flutter` tool's side of that. My main
concern is over whether the engine side works.)
* Fixed `flutter drive` to output the right target file name.
* Changed how the stocks app represents its data, so that we can
show a page for a stock before we know if it exists.
* Made it possible to show a stock page that doesn't exist. It shows
a progress indicator if we're loading the data, or else shows a
message saying it doesn't exist.
* Changed the pathing structure of routes in stocks to work more
sanely.
* Made search in the stocks app actually work (before it only worked
if we happened to accidentally trigger a rebuild). Added a test.
* Replaced some custom code in the stocks app with a BackButton.
* Added a "color" feature to BackButton to support the stocks use case.
* Spaced out the ErrorWidget text a bit more.
* Added `RouteSettings.copyWith`, which I ended up not using.
* Improved the error messages around routing.
While I was in some files I made a few formatting fixes, fixed some
code health issues, and also removed `flaky: true` from some devicelab
tests that have been stable for a while. Also added some documentation
here and there.
* Revert "Revert "Change all ocurrences of '$runtimeType#$hashCode' to use the idAndType method. (#10871)" (#10880)"
This reverts commit ceb814aa647ecd310794a72a7a5c28820ec57a25.
* Change all instances of '$runtimeType#$hashCode' to use the describeIdentity method.
The describeIdentity method generates a shorter description with a consistent length
consisting of the runtime type and the a 5 hex character long truncated
version of the hash code.
