/* static */ void
EffectCompositor::MaybeUpdateCascadeResults(Element* aElement,
nsCSSPseudoElements::Type
aPseudoType,
nsStyleContext* aStyleContext)
{
EffectSet* effects = EffectSet::GetEffectSet(aElement, aPseudoType);
if (!effects || !effects->CascadeNeedsUpdate()) {
return;
}
UpdateCascadeResults(*effects, aElement, aPseudoType, aStyleContext);
MOZ_ASSERT(!effects->CascadeNeedsUpdate(), "Failed to update cascade state");
}
/* static */ void
EffectCompositor::ComposeAnimationRule(dom::Element* aElement,
nsCSSPseudoElements::Type aPseudoType,
CascadeLevel aCascadeLevel,
bool& aStyleChanging)
{
EffectSet* effects = EffectSet::GetEffectSet(aElement, aPseudoType);
if (!effects) {
return;
}
// The caller is responsible for calling MaybeUpdateCascadeResults first.
MOZ_ASSERT(!effects->CascadeNeedsUpdate(),
"Animation cascade out of date when composing animation rule");
// Get a list of effects for the current level sorted by composite order.
nsTArray<KeyframeEffectReadOnly*> sortedEffectList;
for (KeyframeEffectReadOnly* effect : *effects) {
MOZ_ASSERT(effect->GetAnimation());
if (effect->GetAnimation()->CascadeLevel() == aCascadeLevel) {
sortedEffectList.AppendElement(effect);
}
}
sortedEffectList.Sort(EffectCompositeOrderComparator());
RefPtr<AnimValuesStyleRule>& animationRule =
effects->AnimationRule(aCascadeLevel);
animationRule = nullptr;
// We'll set aStyleChanging to true below if necessary.
aStyleChanging = false;
// If multiple animations specify behavior for the same property the
// animation with the *highest* composite order wins.
// As a result, we iterate from last animation to first and, if a
// property has already been set, we don't change it.
nsCSSPropertySet properties;
for (KeyframeEffectReadOnly* effect : Reversed(sortedEffectList)) {
effect->GetAnimation()->ComposeStyle(animationRule, properties,
aStyleChanging);
}
}
