We'll likely address this as part of bug 1151731 when we sample animations from
their timeline.
--HG--
extra : commitid : 9g00bBtDIue
extra : rebase_source : 12d9de2524eb3133bef5a5bcf4c84d4759ccbbca
This patch also removes the (commented-out) play() method from the
AnimationTimeline.webidl since it has been removed from the spec.
--HG--
extra : commitid : 20j8RFhPyP9
extra : rebase_source : 9eb5376f3ad9f4a4a0a214bdbe5593f682316d5b
We only store relevant animations on the timeline. Relevant animations are
any animations that are running or yet to run ("current animations") or
which have finished but are still applying a fill mode ("in effect animations").
AnimationTimeline.getAnimations() only ever returns relevant animations so
this is the minimum set we need to keep track of. Keeping track of any more
than this would prevent us from garbage-collecting any no longer relevant
animations since we keep a strong reference to this animations.
The reason we keep a strong reference is that if an animation is attached to
a timeline, even if there are no references to it from script or markup it
needs to be kept alive in order to dispatch events or resolve promises. An
irrelevant animation however is not going to do either of these things without
outside intervention so we don't need to keep it alive.
--HG--
extra : commitid : WLEUccOqAk
extra : rebase_source : 5c3c987d6c95ca7072c6178349dc113d2f1e5053
This is in anticipation of adding Animation::SetTimeline(). Once we set the
timeline out of band, there's a chance that getting it could return null so
this patch makes the WebIDL and method name reflect that.
--HG--
extra : commitid : FSiwvrGRV1v
extra : rebase_source : 4c4004f58bbfd340642277b0a0b547a7de692dac
The connection between an Animation and an AnimationTimeline is optional. That
is, it is possible to have an Animation without an AnimationTimeline. Until now
we have often just assumed the timeline will be set but eventually we need to
support the possibility of the timeline being null. Indeed, later in this patch
series we will set the timeline out-of-band (i.e. not in the constructor) using
SetTimeline which opens up the possibility that timeline will be null for
a period of time.
This patch paves the way for having an optional timeline by storing the global
used for, e.g. creating promises, on the Animation object itself.
--HG--
extra : commitid : Ew9Zp4t36lV
extra : rebase_source : 16c9de9525a3562ff10e41fdf1602384a4e366e3
This is needed not only for supporting other kinds of timelines, but also for
when we come to implement SetTimeline(AnimationTimeline* aTimeline).
--HG--
extra : commitid : B836jCSbgNL
extra : rebase_source : 2592e66b2a9009f85ec0189ebecf5dba3c9bf8e0
This is not strictly necessary yet but we will want to implement methods
like GetAnimations() on the base class, AnimationTimeline, so we may as well do
that now rather than adding that code to DocumentTimeline and moving it later.
--HG--
extra : commitid : 7GU6Dr9lnPO
extra : rebase_source : d5e788874c72c422b57efbdb81404c79df6d505b
Earlier in this patch series we added an assertion to the destructor for
CSSAnimation and CSSTransition to check that the owning element has been
cleared when the animation is destroyed.
This assertion fails, however, for transitions because there are a two
code paths where a transition may be destroyed without being cancelled.
This patch adjusts those two code paths to ensure transitions are always
cancelled before being destroyed.
--HG--
extra : commitid : 6kwqrE1A55J
extra : rebase_source : 86df7ec85ede5d2015e0239efd90b531e16b8aa1
Having created composite ordering methods for the different kinds of animations
this patch adds a Comparator class so that they can be used to sort an
array of such animations.
This patch uses this Comparator object to sort the results returned by
Element.getAnimations. For this case, the order in which we create animations
and transitions happens to almost perfectly correspond with the composite
ordering defined so that no sorting is necessary.
One exception is that some -moz-* transitions may be created after transitions
that they should sort before when sorting by transition property. In this
case the sorting added in this patch should ensure they are returned in the
correct sequence.
Unfortunately, we can't easily test this since the test files we have are
intended to be cross-browser (where -moz-* properties won't be supported).
Once we implement AnimationTimeline.getAnimations (bug 1150810) we'll have
a better opportunity to test this sorting. For now, the added tests in this
patch just serve as a regression test that the sorting hasn't upset the
already correct order (and an interop test in future once we move them to
web-platform-tests).
--HG--
extra : commitid : KkfoSE69B0F
extra : rebase_source : ee4e47f44281504eb4d35e0f6cc3392ee0cffb94
This patch is quite similar to the code added for CSS animations. We'll factor
out some the common code in a subsequent patch in this series.
--HG--
extra : commitid : LYlmnoyUUsn
extra : rebase_source : 8ffc3e4283887e53a3e00d7fa43536c4203a5c92
This patch adds a convenience method for getting the transition property for
a CSS transition (so we can use this when ordering CSS transitions).
We already have ElementPropertyTransition::TransitionProperty() so this might
seem to be redundant, however we add this now because:
* In the proposed CSS Transitions <-> Web Animations integration, the
CSSTransition interface has a transitionProperty member so we'll need this
function for that.
* Once we allow script to modify the transition, we'll need to track the
original transition property for sorting purposes which is what this method
should do.
* We'll possibly drop ElementPropertyTransition::TransitionProperty() in the
future.
--HG--
extra : commitid : 9toNZe3xt0K
extra : rebase_source : d29addc5a82e3b4aedf6cc9191f48393c88b90d1
Similar to the earlier patch in this series that changed the sequence number
handling for animations, this patch re-uses Animation::mSequenceNum to store
the animation generation number when each transition was generated. When the
transition is cancelled it reverts to using the default animation composite
ordering.
--HG--
extra : commitid : 9wCREIUfPRz
extra : rebase_source : 85a20c1f8a4c9507606b479b8787b4aa2ec28821
This patch also extends the tests for Element.getAnimations(). It doesn't
actually exercise the code added (it's not actually called yet since it doesn't
need to be for Element.getAnimations) but simply provides a useful regression
and interop test.
--HG--
extra : commitid : KWpAsc2Aj54
extra : rebase_source : abe26dc3d79a50239c62dd156dc0a0aa29c11d52
This patch re-uses Animation::mSequenceNum to store the index of CSS animations
within their corresponding animation-name property. When the animation is
removed from an animation-name property it reverts to using the default
animation composite order.
This patch also updates Animation::DoCancel to call UpdateTiming instead of
UpdateEffect. This is because UpdateTiming is responsible for updating the
sequence number (when custom composite order is not in effect). When we remove
an animation from animation-name it will be cancelled and at that point we
expect its sequence number to be cleared which will only happen if
UpdateTiming gets called.
--HG--
extra : commitid : 2KrTezItH3q
extra : rebase_source : 50de87465deef85558ca50de5e6286f7b5603051
Add a virtual method we can use to determine when an animation is having its
sequence number set by some other mechanism than the general logic
defined for animations.
This allows CSS animations and transitions to re-use the sequence number for
their own purposes. Typically what will happen is something like this:
1. A CSSAnimation is created corresponding to an item in the animation-name
property.
At this point CSSAnimation::IsUsingCustomCompositeOrder() will return true
and nsAnimationManager will set the sequence number based on the position of
the animation in animation-name.
2. If at a later point the animation is removed from the animation-name but kept
alive by script, CSSAnimation::CancelFromStyle will be called which will
clear the custom sequence number (i.e. set it to kUnsequenced) and also
update the CSSAnimation's state such as
CSSAnimation::IsUsingCustomCompositeOrder() returns false.
3. Then, then the CSSAnimation next transitions out of the idle state it will
have its sequence number set just like any other Animation and be ordered
like any other Animation (since we can no longer use animation-name to
determine its composite order).
This behavior is added in subsequent patches in this series (and likewise for
CSS transitions too).
--HG--
extra : commitid : B8nPFXzQMfF
extra : rebase_source : 42439fb1dd32a789e270dc0c51af2c660f4593eb
This patch introduces a method that will be used for sorting animations based on
their composite order. The method is based on the API for Comparator objects (as
used by nsTArray and co.) which have a LessThan method. (For the
Comparator::Equals method we can used pointer equality since no two independent
objects should have equal composite order.)
--HG--
extra : commitid : 88oD4UFx5to
extra : rebase_source : 1b30272451c189161a08efac3da48d72e10d8e52
Web Animations defines Animations as having a globally unique sequence number
for the purpose of prioritization:
http://w3c.github.io/web-animations/#animation-sequence-number
As of the writing of this patch, the spec says the sequence number is updated
when the Animation is created. This is problematic and I have proposed that
actually this should be updated from each transition from idle:
https://lists.w3.org/Archives/Public/public-fx/2015AprJun/0054.html
This doesn't seem to have met any opposition so I will update the spec to
reflect this soon.
This patch implements the behavior of updating the sequence number on each
transition from idle.
To make sure we perform this on each change to timing this patch removes
a couple of instances of early returns to ensure that UpdateTiming is called.
The current maximum sequence number is simply a class static and we make no
attempt to deal with wraparound. This is because we only update this number when
an animation transitions from idle which only happens when an animation is
created or script calls cancel() followed by play() on the animation. Supposing
that across all content this happenned an unlikely 1 billion times a second we
still wouldn't exhaust the range of the unsigned 64-bit int for about 585 years.
We'd like to make kUnsequenced be zero and make the static represent the
current maximum. This would probably be easier to understand and recognize in
a debugger. However, later in this patch series we will make CSS animations and
CSS transitions override this sequencing behavior. If we define kUnsequenced
to be zero and they accidentally assign zero as an actual sequence number then
they'll run into trouble. To avoid that we set kUnsequenced to UINT64_MAX.
--HG--
extra : commitid : DMw8uKjg4Hz
extra : rebase_source : 9e98b3346f0297efce3ecfa0b2dd8a9c13075dca
These will be needed for sorting animations and transitions in a const-correct
fashion.
--HG--
extra : commitid : BhuFfkAvse7
extra : rebase_source : a97039f06b9f257ccb9b6aa206653d6b5d5d43d4
Chris Pearce
Jose Antonio Olivera Ortega
Boris Zbarsky
Mark Goodwin
Jean-Yves Avenard
Makoto Kato
Xidorn Quan
Phil Ringnalda
Ting-Yu Lin
Andrea Marchesini
Ted Mielczarek
Chris Manchester
Brian Birtles