mirror of
https://github.com/mozilla/gecko-dev.git
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831 lines
30 KiB
C++
831 lines
30 KiB
C++
/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsAnimationManager.h"
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#include "nsTransitionManager.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/StyleAnimationValue.h"
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#include "nsPresContext.h"
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#include "nsRuleProcessorData.h"
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#include "nsStyleSet.h"
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#include "nsStyleChangeList.h"
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#include "nsCSSRules.h"
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#include "RestyleManager.h"
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#include "nsLayoutUtils.h"
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#include "nsIFrame.h"
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#include "nsIDocument.h"
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#include <math.h>
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using namespace mozilla;
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using namespace mozilla::css;
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void
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nsAnimationManager::UpdateStyleAndEvents(ElementAnimationCollection*
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aCollection,
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TimeStamp aRefreshTime,
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EnsureStyleRuleFlags aFlags)
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{
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aCollection->EnsureStyleRuleFor(aRefreshTime, aFlags);
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GetEventsForCurrentTime(aCollection, mPendingEvents);
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CheckNeedsRefresh();
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}
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void
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nsAnimationManager::GetEventsForCurrentTime(ElementAnimationCollection*
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aCollection,
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EventArray& aEventsToDispatch)
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{
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for (uint32_t animIdx = aCollection->mAnimations.Length(); animIdx-- != 0; ) {
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ElementAnimation* anim = aCollection->mAnimations[animIdx];
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ComputedTiming computedTiming = anim->GetComputedTiming(anim->mTiming);
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switch (computedTiming.mPhase) {
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case ComputedTiming::AnimationPhase_Null:
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case ComputedTiming::AnimationPhase_Before:
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// Do nothing
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break;
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case ComputedTiming::AnimationPhase_Active:
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// Dispatch 'animationstart' or 'animationiteration' when needed.
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if (computedTiming.mCurrentIteration != anim->mLastNotification) {
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// Notify 'animationstart' even if a negative delay puts us
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// past the first iteration.
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// Note that when somebody changes the animation-duration
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// dynamically, this will fire an extra iteration event
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// immediately in many cases. It's not clear to me if that's the
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// right thing to do.
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uint32_t message =
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anim->mLastNotification == ElementAnimation::LAST_NOTIFICATION_NONE
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? NS_ANIMATION_START : NS_ANIMATION_ITERATION;
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anim->mLastNotification = computedTiming.mCurrentIteration;
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TimeDuration iterationStart =
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anim->mTiming.mIterationDuration *
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computedTiming.mCurrentIteration;
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TimeDuration elapsedTime =
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std::max(iterationStart, anim->InitialAdvance());
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AnimationEventInfo ei(aCollection->mElement, anim->mName, message,
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elapsedTime, aCollection->PseudoElement());
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aEventsToDispatch.AppendElement(ei);
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}
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break;
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case ComputedTiming::AnimationPhase_After:
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// If we skipped the animation interval entirely, dispatch
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// 'animationstart' first
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if (anim->mLastNotification ==
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ElementAnimation::LAST_NOTIFICATION_NONE) {
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// Notifying for start of 0th iteration.
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// (This is overwritten below but we set it here to maintain
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// internal consistency.)
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anim->mLastNotification = 0;
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TimeDuration elapsedTime =
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std::min(anim->InitialAdvance(), computedTiming.mActiveDuration);
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AnimationEventInfo ei(aCollection->mElement,
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anim->mName, NS_ANIMATION_START,
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elapsedTime, aCollection->PseudoElement());
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aEventsToDispatch.AppendElement(ei);
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}
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// Dispatch 'animationend' when needed.
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if (anim->mLastNotification !=
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ElementAnimation::LAST_NOTIFICATION_END) {
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anim->mLastNotification = ElementAnimation::LAST_NOTIFICATION_END;
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AnimationEventInfo ei(aCollection->mElement,
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anim->mName, NS_ANIMATION_END,
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computedTiming.mActiveDuration,
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aCollection->PseudoElement());
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aEventsToDispatch.AppendElement(ei);
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}
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break;
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}
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}
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}
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ElementAnimationCollection*
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nsAnimationManager::GetElementAnimations(dom::Element *aElement,
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nsCSSPseudoElements::Type aPseudoType,
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bool aCreateIfNeeded)
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{
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if (!aCreateIfNeeded && PR_CLIST_IS_EMPTY(&mElementCollections)) {
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// Early return for the most common case.
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return nullptr;
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}
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nsIAtom *propName;
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if (aPseudoType == nsCSSPseudoElements::ePseudo_NotPseudoElement) {
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propName = nsGkAtoms::animationsProperty;
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} else if (aPseudoType == nsCSSPseudoElements::ePseudo_before) {
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propName = nsGkAtoms::animationsOfBeforeProperty;
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} else if (aPseudoType == nsCSSPseudoElements::ePseudo_after) {
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propName = nsGkAtoms::animationsOfAfterProperty;
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} else {
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NS_ASSERTION(!aCreateIfNeeded,
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"should never try to create transitions for pseudo "
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"other than :before or :after");
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return nullptr;
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}
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ElementAnimationCollection* collection =
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static_cast<ElementAnimationCollection*>(aElement->GetProperty(propName));
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if (!collection && aCreateIfNeeded) {
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// FIXME: Consider arena-allocating?
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collection =
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new ElementAnimationCollection(aElement, propName, this,
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mPresContext->RefreshDriver()->MostRecentRefresh());
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nsresult rv =
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aElement->SetProperty(propName, collection,
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&ElementAnimationCollection::PropertyDtor, false);
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if (NS_FAILED(rv)) {
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NS_WARNING("SetProperty failed");
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delete collection;
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return nullptr;
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}
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if (propName == nsGkAtoms::animationsProperty) {
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aElement->SetMayHaveAnimations();
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}
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AddElementCollection(collection);
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}
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return collection;
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}
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/* virtual */ void
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nsAnimationManager::RulesMatching(ElementRuleProcessorData* aData)
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{
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NS_ABORT_IF_FALSE(aData->mPresContext == mPresContext,
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"pres context mismatch");
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nsIStyleRule *rule =
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GetAnimationRule(aData->mElement,
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nsCSSPseudoElements::ePseudo_NotPseudoElement);
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if (rule) {
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aData->mRuleWalker->Forward(rule);
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}
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}
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/* virtual */ void
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nsAnimationManager::RulesMatching(PseudoElementRuleProcessorData* aData)
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{
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NS_ABORT_IF_FALSE(aData->mPresContext == mPresContext,
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"pres context mismatch");
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if (aData->mPseudoType != nsCSSPseudoElements::ePseudo_before &&
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aData->mPseudoType != nsCSSPseudoElements::ePseudo_after) {
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return;
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}
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// FIXME: Do we really want to be the only thing keeping a
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// pseudo-element alive? I *think* the non-animation restyle should
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// handle that, but should add a test.
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nsIStyleRule *rule = GetAnimationRule(aData->mElement, aData->mPseudoType);
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if (rule) {
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aData->mRuleWalker->Forward(rule);
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}
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}
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/* virtual */ void
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nsAnimationManager::RulesMatching(AnonBoxRuleProcessorData* aData)
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{
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}
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#ifdef MOZ_XUL
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/* virtual */ void
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nsAnimationManager::RulesMatching(XULTreeRuleProcessorData* aData)
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{
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}
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#endif
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/* virtual */ size_t
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nsAnimationManager::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const
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{
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return CommonAnimationManager::SizeOfExcludingThis(aMallocSizeOf);
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// Measurement of the following members may be added later if DMD finds it is
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// worthwhile:
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// - mPendingEvents
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}
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/* virtual */ size_t
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nsAnimationManager::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
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{
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return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
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}
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nsIStyleRule*
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nsAnimationManager::CheckAnimationRule(nsStyleContext* aStyleContext,
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mozilla::dom::Element* aElement)
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{
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if (!mPresContext->IsProcessingAnimationStyleChange()) {
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if (!mPresContext->IsDynamic()) {
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// For print or print preview, ignore animations.
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return nullptr;
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}
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// Everything that causes our animation data to change triggers a
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// style change, which in turn triggers a non-animation restyle.
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// Likewise, when we initially construct frames, we're not in a
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// style change, but also not in an animation restyle.
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const nsStyleDisplay* disp = aStyleContext->StyleDisplay();
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ElementAnimationCollection* collection =
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GetElementAnimations(aElement, aStyleContext->GetPseudoType(), false);
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if (!collection &&
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disp->mAnimationNameCount == 1 &&
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disp->mAnimations[0].GetName().IsEmpty()) {
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return nullptr;
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}
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// build the animations list
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dom::AnimationTimeline* timeline = aElement->OwnerDoc()->Timeline();
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ElementAnimationPtrArray newAnimations;
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BuildAnimations(aStyleContext, timeline, newAnimations);
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if (newAnimations.IsEmpty()) {
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if (collection) {
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collection->Destroy();
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}
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return nullptr;
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}
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if (collection) {
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collection->mStyleRule = nullptr;
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collection->mStyleRuleRefreshTime = TimeStamp();
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collection->UpdateAnimationGeneration(mPresContext);
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// Copy over the start times and (if still paused) pause starts
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// for each animation (matching on name only) that was also in the
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// old list of animations.
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// This means that we honor dynamic changes, which isn't what the
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// spec says to do, but WebKit seems to honor at least some of
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// them. See
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// http://lists.w3.org/Archives/Public/www-style/2011Apr/0079.html
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// In order to honor what the spec said, we'd copy more data over
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// (or potentially optimize BuildAnimations to avoid rebuilding it
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// in the first place).
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if (!collection->mAnimations.IsEmpty()) {
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for (size_t newIdx = newAnimations.Length(); newIdx-- != 0;) {
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ElementAnimation* newAnim = newAnimations[newIdx];
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// Find the matching animation with this name in the old list
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// of animations. We iterate through both lists in a backwards
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// direction which means that if there are more animations in
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// the new list of animations with a given name than in the old
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// list, it will be the animations towards the of the beginning of
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// the list that do not match and are treated as new animations.
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nsRefPtr<ElementAnimation> oldAnim;
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size_t oldIdx = collection->mAnimations.Length();
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while (oldIdx-- != 0) {
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ElementAnimation* a = collection->mAnimations[oldIdx];
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if (a->mName == newAnim->mName) {
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oldAnim = a;
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break;
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}
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}
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if (!oldAnim) {
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continue;
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}
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// Update the old from the new so we can keep the original object
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// identity (and any expando properties attached to it).
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oldAnim->mTiming = newAnim->mTiming;
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oldAnim->mProperties = newAnim->mProperties;
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// Reset compositor state so animation will be re-synchronized.
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oldAnim->mIsRunningOnCompositor = false;
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// Handle changes in play state.
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if (!oldAnim->IsPaused() && newAnim->IsPaused()) {
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// Start pause at current time.
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oldAnim->mPauseStart = timeline->GetCurrentTimeStamp();
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} else if (oldAnim->IsPaused() && !newAnim->IsPaused()) {
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const TimeStamp& now = timeline->GetCurrentTimeStamp();
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if (!now.IsNull()) {
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// FIXME: Once we store the start time and pause start as
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// offsets (not timestamps) we should be able to update the
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// start time to something more appropriate when now IsNull.
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// Handle change in pause state by adjusting start time to
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// unpause.
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oldAnim->mStartTime += now - oldAnim->mPauseStart;
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}
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oldAnim->mPauseStart = TimeStamp();
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}
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oldAnim->mPlayState = newAnim->mPlayState;
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// Replace new animation with the (updated) old one and remove the
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// old one from the array so we don't try to match it any more.
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//
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// Although we're doing this while iterating this is safe because
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// we're not changing the length of newAnimations and we've finished
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// iterating over the list of old iterations.
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newAnim = nullptr;
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newAnimations.ReplaceElementAt(newIdx, oldAnim);
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collection->mAnimations.RemoveElementAt(oldIdx);
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}
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}
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} else {
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collection =
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GetElementAnimations(aElement, aStyleContext->GetPseudoType(), true);
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}
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collection->mAnimations.SwapElements(newAnimations);
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collection->mNeedsRefreshes = true;
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TimeStamp refreshTime = mPresContext->RefreshDriver()->MostRecentRefresh();
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UpdateStyleAndEvents(collection, refreshTime,
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EnsureStyleRule_IsNotThrottled);
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// We don't actually dispatch the mPendingEvents now. We'll either
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// dispatch them the next time we get a refresh driver notification
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// or the next time somebody calls
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// nsPresShell::FlushPendingNotifications.
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if (!mPendingEvents.IsEmpty()) {
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mPresContext->Document()->SetNeedStyleFlush();
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}
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}
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return GetAnimationRule(aElement, aStyleContext->GetPseudoType());
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}
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struct KeyframeData {
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float mKey;
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uint32_t mIndex; // store original order since sort algorithm is not stable
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nsCSSKeyframeRule *mRule;
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};
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struct KeyframeDataComparator {
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bool Equals(const KeyframeData& A, const KeyframeData& B) const {
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return A.mKey == B.mKey && A.mIndex == B.mIndex;
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}
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bool LessThan(const KeyframeData& A, const KeyframeData& B) const {
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return A.mKey < B.mKey || (A.mKey == B.mKey && A.mIndex < B.mIndex);
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}
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};
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class ResolvedStyleCache {
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public:
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ResolvedStyleCache() : mCache(16) {}
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nsStyleContext* Get(nsPresContext *aPresContext,
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nsStyleContext *aParentStyleContext,
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nsCSSKeyframeRule *aKeyframe);
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private:
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nsRefPtrHashtable<nsPtrHashKey<nsCSSKeyframeRule>, nsStyleContext> mCache;
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};
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nsStyleContext*
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ResolvedStyleCache::Get(nsPresContext *aPresContext,
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nsStyleContext *aParentStyleContext,
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nsCSSKeyframeRule *aKeyframe)
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{
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// FIXME (spec): The css3-animations spec isn't very clear about how
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// properties are resolved when they have values that depend on other
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// properties (e.g., values in 'em'). I presume that they're resolved
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// relative to the other styles of the element. The question is
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// whether they are resolved relative to other animations: I assume
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// that they're not, since that would prevent us from caching a lot of
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// data that we'd really like to cache (in particular, the
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// StyleAnimationValue values in AnimationPropertySegment).
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nsStyleContext *result = mCache.GetWeak(aKeyframe);
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if (!result) {
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nsCOMArray<nsIStyleRule> rules;
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rules.AppendObject(aKeyframe);
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nsRefPtr<nsStyleContext> resultStrong = aPresContext->StyleSet()->
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ResolveStyleByAddingRules(aParentStyleContext, rules);
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mCache.Put(aKeyframe, resultStrong);
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result = resultStrong;
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}
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return result;
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}
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void
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nsAnimationManager::BuildAnimations(nsStyleContext* aStyleContext,
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dom::AnimationTimeline* aTimeline,
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ElementAnimationPtrArray& aAnimations)
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{
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NS_ABORT_IF_FALSE(aAnimations.IsEmpty(), "expect empty array");
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ResolvedStyleCache resolvedStyles;
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const nsStyleDisplay *disp = aStyleContext->StyleDisplay();
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TimeStamp now = aTimeline->GetCurrentTimeStamp();
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for (uint32_t animIdx = 0, animEnd = disp->mAnimationNameCount;
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animIdx != animEnd; ++animIdx) {
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const StyleAnimation& src = disp->mAnimations[animIdx];
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// CSS Animations whose animation-name does not match a @keyframes rule do
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// not generate animation events. This includes when the animation-name is
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// "none" which is represented by an empty name in the StyleAnimation.
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// Since such animations neither affect style nor dispatch events, we do
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// not generate a corresponding ElementAnimation for them.
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nsCSSKeyframesRule* rule =
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src.GetName().IsEmpty()
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? nullptr
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: mPresContext->StyleSet()->KeyframesRuleForName(mPresContext,
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src.GetName());
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if (!rule) {
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continue;
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}
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nsRefPtr<ElementAnimation> dest =
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*aAnimations.AppendElement(new ElementAnimation(aTimeline));
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dest->mName = src.GetName();
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dest->mTiming.mIterationDuration =
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TimeDuration::FromMilliseconds(src.GetDuration());
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dest->mTiming.mDelay = TimeDuration::FromMilliseconds(src.GetDelay());
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dest->mTiming.mIterationCount = src.GetIterationCount();
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dest->mTiming.mDirection = src.GetDirection();
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dest->mTiming.mFillMode = src.GetFillMode();
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dest->mStartTime = now;
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dest->mPlayState = src.GetPlayState();
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if (dest->IsPaused()) {
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dest->mPauseStart = now;
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} else {
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dest->mPauseStart = TimeStamp();
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}
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// While current drafts of css3-animations say that later keyframes
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// with the same key entirely replace earlier ones (no cascading),
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// this is a bad idea and contradictory to the rest of CSS. So
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// we're going to keep all the keyframes for each key and then do
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// the replacement on a per-property basis rather than a per-rule
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// basis, just like everything else in CSS.
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AutoInfallibleTArray<KeyframeData, 16> sortedKeyframes;
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for (uint32_t ruleIdx = 0, ruleEnd = rule->StyleRuleCount();
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ruleIdx != ruleEnd; ++ruleIdx) {
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css::Rule* cssRule = rule->GetStyleRuleAt(ruleIdx);
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NS_ABORT_IF_FALSE(cssRule, "must have rule");
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NS_ABORT_IF_FALSE(cssRule->GetType() == css::Rule::KEYFRAME_RULE,
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"must be keyframe rule");
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nsCSSKeyframeRule *kfRule = static_cast<nsCSSKeyframeRule*>(cssRule);
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const nsTArray<float> &keys = kfRule->GetKeys();
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for (uint32_t keyIdx = 0, keyEnd = keys.Length();
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keyIdx != keyEnd; ++keyIdx) {
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float key = keys[keyIdx];
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// FIXME (spec): The spec doesn't say what to do with
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// out-of-range keyframes. We'll ignore them.
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if (0.0f <= key && key <= 1.0f) {
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KeyframeData *data = sortedKeyframes.AppendElement();
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data->mKey = key;
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data->mIndex = ruleIdx;
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data->mRule = kfRule;
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}
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}
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}
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sortedKeyframes.Sort(KeyframeDataComparator());
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if (sortedKeyframes.Length() == 0) {
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// no segments
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continue;
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}
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|
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// Record the properties that are present in any keyframe rules we
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// are using.
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nsCSSPropertySet properties;
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|
|
for (uint32_t kfIdx = 0, kfEnd = sortedKeyframes.Length();
|
|
kfIdx != kfEnd; ++kfIdx) {
|
|
css::Declaration *decl = sortedKeyframes[kfIdx].mRule->Declaration();
|
|
for (uint32_t propIdx = 0, propEnd = decl->Count();
|
|
propIdx != propEnd; ++propIdx) {
|
|
nsCSSProperty prop = decl->GetPropertyAt(propIdx);
|
|
if (prop != eCSSPropertyExtra_variable) {
|
|
// CSS Variables are not animatable
|
|
properties.AddProperty(prop);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (nsCSSProperty prop = nsCSSProperty(0);
|
|
prop < eCSSProperty_COUNT_no_shorthands;
|
|
prop = nsCSSProperty(prop + 1)) {
|
|
if (!properties.HasProperty(prop) ||
|
|
nsCSSProps::kAnimTypeTable[prop] == eStyleAnimType_None) {
|
|
continue;
|
|
}
|
|
|
|
// Build a list of the keyframes to use for this property. This
|
|
// means we need every keyframe with the property in it, except
|
|
// for those keyframes where a later keyframe with the *same key*
|
|
// also has the property.
|
|
AutoInfallibleTArray<uint32_t, 16> keyframesWithProperty;
|
|
float lastKey = 100.0f; // an invalid key
|
|
for (uint32_t kfIdx = 0, kfEnd = sortedKeyframes.Length();
|
|
kfIdx != kfEnd; ++kfIdx) {
|
|
KeyframeData &kf = sortedKeyframes[kfIdx];
|
|
if (!kf.mRule->Declaration()->HasProperty(prop)) {
|
|
continue;
|
|
}
|
|
if (kf.mKey == lastKey) {
|
|
// Replace previous occurrence of same key.
|
|
keyframesWithProperty[keyframesWithProperty.Length() - 1] = kfIdx;
|
|
} else {
|
|
keyframesWithProperty.AppendElement(kfIdx);
|
|
}
|
|
lastKey = kf.mKey;
|
|
}
|
|
|
|
AnimationProperty &propData = *dest->mProperties.AppendElement();
|
|
propData.mProperty = prop;
|
|
|
|
KeyframeData *fromKeyframe = nullptr;
|
|
nsRefPtr<nsStyleContext> fromContext;
|
|
bool interpolated = true;
|
|
for (uint32_t wpIdx = 0, wpEnd = keyframesWithProperty.Length();
|
|
wpIdx != wpEnd; ++wpIdx) {
|
|
uint32_t kfIdx = keyframesWithProperty[wpIdx];
|
|
KeyframeData &toKeyframe = sortedKeyframes[kfIdx];
|
|
|
|
nsRefPtr<nsStyleContext> toContext =
|
|
resolvedStyles.Get(mPresContext, aStyleContext, toKeyframe.mRule);
|
|
|
|
if (fromKeyframe) {
|
|
interpolated = interpolated &&
|
|
BuildSegment(propData.mSegments, prop, src,
|
|
fromKeyframe->mKey, fromContext,
|
|
fromKeyframe->mRule->Declaration(),
|
|
toKeyframe.mKey, toContext);
|
|
} else {
|
|
if (toKeyframe.mKey != 0.0f) {
|
|
// There's no data for this property at 0%, so use the
|
|
// cascaded value above us.
|
|
interpolated = interpolated &&
|
|
BuildSegment(propData.mSegments, prop, src,
|
|
0.0f, aStyleContext, nullptr,
|
|
toKeyframe.mKey, toContext);
|
|
}
|
|
}
|
|
|
|
fromContext = toContext;
|
|
fromKeyframe = &toKeyframe;
|
|
}
|
|
|
|
if (fromKeyframe->mKey != 1.0f) {
|
|
// There's no data for this property at 100%, so use the
|
|
// cascaded value above us.
|
|
interpolated = interpolated &&
|
|
BuildSegment(propData.mSegments, prop, src,
|
|
fromKeyframe->mKey, fromContext,
|
|
fromKeyframe->mRule->Declaration(),
|
|
1.0f, aStyleContext);
|
|
}
|
|
|
|
// If we failed to build any segments due to inability to
|
|
// interpolate, remove the property from the animation. (It's not
|
|
// clear if this is the right thing to do -- we could run some of
|
|
// the segments, but it's really not clear whether we should skip
|
|
// values (which?) or skip segments, so best to skip the whole
|
|
// thing for now.)
|
|
if (!interpolated) {
|
|
dest->mProperties.RemoveElementAt(dest->mProperties.Length() - 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsAnimationManager::BuildSegment(InfallibleTArray<AnimationPropertySegment>&
|
|
aSegments,
|
|
nsCSSProperty aProperty,
|
|
const StyleAnimation& aAnimation,
|
|
float aFromKey, nsStyleContext* aFromContext,
|
|
mozilla::css::Declaration* aFromDeclaration,
|
|
float aToKey, nsStyleContext* aToContext)
|
|
{
|
|
StyleAnimationValue fromValue, toValue, dummyValue;
|
|
if (!ExtractComputedValueForTransition(aProperty, aFromContext, fromValue) ||
|
|
!ExtractComputedValueForTransition(aProperty, aToContext, toValue) ||
|
|
// Check that we can interpolate between these values
|
|
// (If this is ever a performance problem, we could add a
|
|
// CanInterpolate method, but it seems fine for now.)
|
|
!StyleAnimationValue::Interpolate(aProperty, fromValue, toValue,
|
|
0.5, dummyValue)) {
|
|
return false;
|
|
}
|
|
|
|
AnimationPropertySegment &segment = *aSegments.AppendElement();
|
|
|
|
segment.mFromValue = fromValue;
|
|
segment.mToValue = toValue;
|
|
segment.mFromKey = aFromKey;
|
|
segment.mToKey = aToKey;
|
|
const nsTimingFunction *tf;
|
|
if (aFromDeclaration &&
|
|
aFromDeclaration->HasProperty(eCSSProperty_animation_timing_function)) {
|
|
tf = &aFromContext->StyleDisplay()->mAnimations[0].GetTimingFunction();
|
|
} else {
|
|
tf = &aAnimation.GetTimingFunction();
|
|
}
|
|
segment.mTimingFunction.Init(*tf);
|
|
|
|
return true;
|
|
}
|
|
|
|
nsIStyleRule*
|
|
nsAnimationManager::GetAnimationRule(mozilla::dom::Element* aElement,
|
|
nsCSSPseudoElements::Type aPseudoType)
|
|
{
|
|
NS_ABORT_IF_FALSE(
|
|
aPseudoType == nsCSSPseudoElements::ePseudo_NotPseudoElement ||
|
|
aPseudoType == nsCSSPseudoElements::ePseudo_before ||
|
|
aPseudoType == nsCSSPseudoElements::ePseudo_after,
|
|
"forbidden pseudo type");
|
|
|
|
if (!mPresContext->IsDynamic()) {
|
|
// For print or print preview, ignore animations.
|
|
return nullptr;
|
|
}
|
|
|
|
ElementAnimationCollection* collection =
|
|
GetElementAnimations(aElement, aPseudoType, false);
|
|
if (!collection) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (mPresContext->IsProcessingRestyles() &&
|
|
!mPresContext->IsProcessingAnimationStyleChange()) {
|
|
// During the non-animation part of processing restyles, we don't
|
|
// add the animation rule.
|
|
|
|
if (collection->mStyleRule) {
|
|
collection->PostRestyleForAnimation(mPresContext);
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
NS_WARN_IF_FALSE(!collection->mNeedsRefreshes ||
|
|
collection->mStyleRuleRefreshTime ==
|
|
mPresContext->RefreshDriver()->MostRecentRefresh(),
|
|
"should already have refreshed style rule");
|
|
|
|
return collection->mStyleRule;
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsAnimationManager::WillRefresh(mozilla::TimeStamp aTime)
|
|
{
|
|
NS_ABORT_IF_FALSE(mPresContext,
|
|
"refresh driver should not notify additional observers "
|
|
"after pres context has been destroyed");
|
|
if (!mPresContext->GetPresShell()) {
|
|
// Someone might be keeping mPresContext alive past the point
|
|
// where it has been torn down; don't bother doing anything in
|
|
// this case. But do get rid of all our transitions so we stop
|
|
// triggering refreshes.
|
|
RemoveAllElementCollections();
|
|
return;
|
|
}
|
|
|
|
FlushAnimations(Can_Throttle);
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::AddElementCollection(
|
|
ElementAnimationCollection* aCollection)
|
|
{
|
|
if (!mObservingRefreshDriver) {
|
|
NS_ASSERTION(
|
|
static_cast<ElementAnimationCollection*>(aCollection)->mNeedsRefreshes,
|
|
"Added data which doesn't need refreshing?");
|
|
// We need to observe the refresh driver.
|
|
mPresContext->RefreshDriver()->AddRefreshObserver(this, Flush_Style);
|
|
mObservingRefreshDriver = true;
|
|
}
|
|
|
|
PR_INSERT_BEFORE(aCollection, &mElementCollections);
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::CheckNeedsRefresh()
|
|
{
|
|
for (PRCList *l = PR_LIST_HEAD(&mElementCollections);
|
|
l != &mElementCollections;
|
|
l = PR_NEXT_LINK(l)) {
|
|
if (static_cast<ElementAnimationCollection*>(l)->mNeedsRefreshes) {
|
|
if (!mObservingRefreshDriver) {
|
|
mPresContext->RefreshDriver()->AddRefreshObserver(this, Flush_Style);
|
|
mObservingRefreshDriver = true;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
if (mObservingRefreshDriver) {
|
|
mObservingRefreshDriver = false;
|
|
mPresContext->RefreshDriver()->RemoveRefreshObserver(this, Flush_Style);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::FlushAnimations(FlushFlags aFlags)
|
|
{
|
|
// FIXME: check that there's at least one style rule that's not
|
|
// in its "done" state, and if there isn't, remove ourselves from
|
|
// the refresh driver (but leave the animations!).
|
|
TimeStamp now = mPresContext->RefreshDriver()->MostRecentRefresh();
|
|
bool didThrottle = false;
|
|
for (PRCList *l = PR_LIST_HEAD(&mElementCollections);
|
|
l != &mElementCollections;
|
|
l = PR_NEXT_LINK(l)) {
|
|
ElementAnimationCollection* collection =
|
|
static_cast<ElementAnimationCollection*>(l);
|
|
bool canThrottleTick = aFlags == Can_Throttle &&
|
|
collection->CanPerformOnCompositorThread(
|
|
ElementAnimationCollection::CanAnimateFlags(0)) &&
|
|
collection->CanThrottleAnimation(now);
|
|
|
|
nsRefPtr<css::AnimValuesStyleRule> oldStyleRule = collection->mStyleRule;
|
|
UpdateStyleAndEvents(collection, now, canThrottleTick
|
|
? EnsureStyleRule_IsThrottled
|
|
: EnsureStyleRule_IsNotThrottled);
|
|
if (oldStyleRule != collection->mStyleRule) {
|
|
collection->PostRestyleForAnimation(mPresContext);
|
|
} else {
|
|
didThrottle = true;
|
|
}
|
|
}
|
|
|
|
if (didThrottle) {
|
|
mPresContext->Document()->SetNeedStyleFlush();
|
|
}
|
|
|
|
DispatchEvents(); // may destroy us
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::DoDispatchEvents()
|
|
{
|
|
EventArray events;
|
|
mPendingEvents.SwapElements(events);
|
|
for (uint32_t i = 0, i_end = events.Length(); i < i_end; ++i) {
|
|
AnimationEventInfo &info = events[i];
|
|
EventDispatcher::Dispatch(info.mElement, mPresContext, &info.mEvent);
|
|
|
|
if (!mPresContext) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::UpdateThrottledStylesForSubtree(nsIContent* aContent,
|
|
nsStyleContext* aParentStyle,
|
|
nsStyleChangeList& aChangeList)
|
|
{
|
|
dom::Element* element;
|
|
if (aContent->IsElement()) {
|
|
element = aContent->AsElement();
|
|
} else {
|
|
element = nullptr;
|
|
}
|
|
|
|
nsRefPtr<nsStyleContext> newStyle;
|
|
|
|
ElementAnimationCollection* collection;
|
|
if (element &&
|
|
(collection =
|
|
GetElementAnimations(element,
|
|
nsCSSPseudoElements::ePseudo_NotPseudoElement,
|
|
false))) {
|
|
// re-resolve our style
|
|
newStyle = UpdateThrottledStyle(element, aParentStyle, aChangeList);
|
|
// remove the current transition from the working set
|
|
collection->mFlushGeneration =
|
|
mPresContext->RefreshDriver()->MostRecentRefresh();
|
|
} else {
|
|
newStyle = ReparentContent(aContent, aParentStyle);
|
|
}
|
|
|
|
// walk the children
|
|
if (newStyle) {
|
|
for (nsIContent *child = aContent->GetFirstChild(); child;
|
|
child = child->GetNextSibling()) {
|
|
UpdateThrottledStylesForSubtree(child, newStyle, aChangeList);
|
|
}
|
|
}
|
|
}
|
|
|
|
IMPL_UPDATE_ALL_THROTTLED_STYLES_INTERNAL(nsAnimationManager,
|
|
GetElementAnimations)
|
|
|
|
void
|
|
nsAnimationManager::UpdateAllThrottledStyles()
|
|
{
|
|
if (PR_CLIST_IS_EMPTY(&mElementCollections)) {
|
|
// no throttled animations, leave early
|
|
return;
|
|
}
|
|
|
|
UpdateAllThrottledStylesInternal();
|
|
}
|
|
|