This requires all AnimationController objects to be given a
TickerProvider, a class that can create the Ticker.
It also provides some nice mixins for people who want to have their
State provide a TickerProvider. And a schedulerTickerProvider for those
cases where you just want to see your battery burn.
Also, we now enforce destruction order for elements.
Switch our pubspec.yamls to using SDK sources so that we can have consistent
source types when we depend on these packages from external packages using SDK
sources.
* Update tools to use `analyzer` from vended Dart SDK.
* updates `flutter_tools` and `flutter_test` to use the SDK-vended `analyzer` package
* tweaks dependency tracking logic to only record the SDK-vended `analyzer` so as not to crash on spurious conflicts (due to transitive dependencies)
* Review fixes.
Previously, pumpWidget() would do a partial pump (it didn't trigger
Ticker callbacks or post-frame callbacks), and pump() would do a full
pump. This patch brings them closer together. It also makes runApp run a
full actual frame, rather than skipping the transient callback part of
the frame logic. Having "half-frames" in the system was confusing and
could lead to bugs where code expecting to run before the next layout
pass didn't because a "half-frame" ran first.
Also, make Tickers start ticking in the frame that they were started in,
if they were started during a frame. This means we no longer spin a
frame for t=0, we jump straight to the first actual frame.
Other changes in this patch:
* rename WidgetsBinding._runApp to WidgetsBinding.attachRootWidget, so
that tests can use it to more accurately mock out runApp.
* allow loadStructuredData to return synchronously.
* make handleBeginFrame handle not being given a time stamp.
* make DataPipeImageProvider.loadAsync protected (rather than private),
and document it. There wasn't really a reason for it to be private.
* fix ImageConfiguration.toString.
* introduce debugPrintBuildScope and debugPrintScheduleBuildForStacks,
which can help debug problems with widgets getting marked as dirty but
not cleaned.
* make debugPrintRebuildDirtyWidgets say "Building" the first time and
"Rebuilding" the second, to make it clearer when a widget is first
created. This makes debugging widget lifecycle issues much easier.
* make debugDumpApp more resilient.
* debugPrintStack now takes a label that is printed before the stack.
* improve the banner shown for debugPrintBeginFrameBanner.
* various and sundry documentation fixes
This issue got fixed by a recent check-in, but I had a test specifically
for this incarnation so we should probably keep it just in case.
Closes https://github.com/flutter/flutter/issues/5630
Previously, if a StatefulWidget was marked dirty, then removed from the
build, then reinserted using the exact same widget under a widget under
a LayoutBuilder, it wouldn't rebuild.
This fixes that.
It also introduces an assert that's supposed to catch SizeObserver-like
behaviour. Rather than make this patch even bigger, I papered over two
pre-existing bugs which this assert uncovered (and fixed the other
problems it found):
https://github.com/flutter/flutter/issues/5751https://github.com/flutter/flutter/issues/5749
We should fix those before 1.0 though.
Changes in this patch:
- iOS now uses a different scrollDrag constant than Android.
- ScrollConfigurationDelegate now knows about target platforms.
- ScrollBehaviors now know about target platforms.
- RawInputLine now has to be told what platform it's targetting.
- PageableList now has a concept of target platform.
- make debugPrintStack filter its stack.
- move debugPrintStack to `assertions.dart`.
- add support for limiting the number of frames to debugPrintStack.
- make defaultTargetPlatform default to android in test environments.
- remove OverscrollStyle and MaterialApp's overscrollStyle argument. You
can now control the overscroll style using Theme.platform.
- the default scroll configuration is now private to avoid people
relying on the defaultTargetPlatform getter in their subclasses (since
they really should use Theme.of(context).platform).
- fix some typos I noticed in some tests.
- added a test for flinging scrollables, that checks that the behavior
differs on the two target platforms.
- made flingFrom and fling in the test API pump the frames.
- added more docs to the test API.
- made the TestAsyncUtils.guard() method report uncaught errors to help
debug errors when using that API.
We now have 100% coverage of animation.dart and animation_controller.dart.
Also, add some basic tools for working with lcov files. These tools need much
more polish.
* brings in analyzer version (`0.27.4-alpha.14`) corresponding to current Dart SDK (`1.18.0-dev.2.0`).
* updates analysis to use prefered API for embedder URI resolution
* adds trampolines to `State` and `StatelessWidget` to allow for warning-free within-library @protected access (needed since we closed off access to @protected closures from outside subclasses).
* turns off cache dependency tracking for analysis (in DDC this amounted to a 10% speed improvement).
Prep to get us ready to pull in a new dev SDK and bump our analyzer DEP.
* updates `crypto` (required by fresh analyzer)
* fixes newly flagged dead code warnings
* fixes switches that fall through and don't return
Don't suggest filing an issue when we can definitively say that the
assertion in question was not thrown from within the flutter package.
Fixes https://github.com/flutter/flutter/issues/3812.
Put the stack trace first after the message, with more details below the
stack trace, since the stack is often very useful and the stacks are no
longer stupidly long.
Better document the 'rescheduling' feature, and improve the error
handling asserts when it is misused.
Fixes https://github.com/flutter/flutter/issues/3888.
Improve the wording around the stack dump for exceptions during
callbacks.
Improve the color and font size of messages in live tests.
Fixes https://github.com/flutter/flutter/issues/4018.
* Add a "build" phase to EnginePhase for completeness.
* Ignore events from the device during test execution.
* More dartdocs
* Slightly more helpful messages about Timers in verifyInvariants.
* Add widgetList, elementList, stateList, renderObjectList.
* Send test events asynchronously for consistency with other APIs.
* Fix a test that was depending on test events being synchronous (or
rather, scheduled in a microtask that came before the microtask for
the completer of the future that the tap() function returned).
