void
CommonAnimationManager::NotifyCollectionUpdated(AnimationPlayerCollection&
                                                  aCollection)
{
  MaybeStartObservingRefreshDriver();
  mPresContext->ClearLastStyleUpdateForAllAnimations();
  mPresContext->RestyleManager()->IncrementAnimationGeneration();
  aCollection.UpdateAnimationGeneration(mPresContext);
  aCollection.PostRestyleForAnimation(mPresContext);
}
void
CommonAnimationManager::NotifyCollectionUpdated(AnimationPlayerCollection&
        aCollection)
{
    CheckNeedsRefresh();
    mPresContext->ClearLastStyleUpdateForAllAnimations();
    mPresContext->RestyleManager()->IncrementAnimationGeneration();
    aCollection.UpdateAnimationGeneration(mPresContext);
    aCollection.PostRestyleForAnimation(mPresContext);
}
nsIStyleRule*
CommonAnimationManager::GetAnimationRule(mozilla::dom::Element* aElement,
                                         nsCSSPseudoElements::Type aPseudoType)
{
  MOZ_ASSERT(
    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;
  }

  AnimationPlayerCollection* collection =
    GetAnimationPlayers(aElement, aPseudoType, false);
  if (!collection) {
    return nullptr;
  }

  RestyleManager* restyleManager = mPresContext->RestyleManager();
  if (restyleManager->SkipAnimationRules()) {
    // During the non-animation part of processing restyles, we don't
    // add the animation rule.

    if (collection->mStyleRule && restyleManager->PostAnimationRestyles()) {
      collection->PostRestyleForAnimation(mPresContext);
    }

    return nullptr;
  }

  // Animations should already be refreshed, but transitions may not be.
  // Note that this is temporary, we would like both animations and transitions
  // to both be refreshed by this point.
  if (IsAnimationManager()) {
    NS_WARN_IF_FALSE(!collection->mNeedsRefreshes ||
                     collection->mStyleRuleRefreshTime ==
                       mPresContext->RefreshDriver()->MostRecentRefresh(),
                     "should already have refreshed style rule");
  } else {
    // FIXME: Remove this assignment.  See bug 1061364.
    collection->mNeedsRefreshes = true;
    collection->EnsureStyleRuleFor(
      mPresContext->RefreshDriver()->MostRecentRefresh(),
      EnsureStyleRule_IsNotThrottled);
  }

  return collection->mStyleRule;
}
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;
  }

  AnimationPlayerCollection* collection =
    GetAnimationPlayers(aElement, aPseudoType, false);
  if (!collection) {
    return nullptr;
  }

  RestyleManager* restyleManager = mPresContext->RestyleManager();
  if (restyleManager->SkipAnimationRules()) {
    // During the non-animation part of processing restyles, we don't
    // add the animation rule.

    if (collection->mStyleRule && restyleManager->PostAnimationRestyles()) {
      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;
}
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)) {
    AnimationPlayerCollection* collection =
      static_cast<AnimationPlayerCollection*>(l);

    nsAutoAnimationMutationBatch mb(collection->mElement);

    collection->Tick();
    bool canThrottleTick = aFlags == Can_Throttle &&
      collection->CanPerformOnCompositorThread(
        AnimationPlayerCollection::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
}