bool MutableStylePropertySet::setProperty(CSSPropertyID unresolvedProperty, const String& value, bool important, StyleSheetContents* contextStyleSheet)
{
// Setting the value to an empty string just removes the property in both IE and Gecko.
// Setting it to null seems to produce less consistent results, but we treat it just the same.
if (value.isEmpty())
return removeProperty(resolveCSSPropertyID(unresolvedProperty));
// When replacing an existing property value, this moves the property to the end of the list.
// Firefox preserves the position, and MSIE moves the property to the beginning.
return CSSParser::parseValue(this, unresolvedProperty, value, important, contextStyleSheet);
}
bool CSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID unresolvedProperty, const String& string, bool important, CSSParserMode parserMode, StyleSheetContents* styleSheet)
{
if (string.isEmpty())
return false;
CSSPropertyID resolvedProperty = resolveCSSPropertyID(unresolvedProperty);
RefPtrWillBeRawPtr<CSSValue> value = CSSParserFastPaths::maybeParseValue(resolvedProperty, string, parserMode);
if (value)
return declaration->setProperty(CSSProperty(resolvedProperty, value.release(), important));
CSSParserContext context(parserMode, 0);
if (styleSheet) {
context = styleSheet->parserContext();
context.setMode(parserMode);
}
return parseValue(declaration, unresolvedProperty, string, important, context);
}
void CSSAnimations::calculateTransitionUpdate(CSSAnimationUpdate& update, const Element* animatingElement, const ComputedStyle& style)
{
if (!animatingElement)
return;
if (animatingElement->document().printing() || animatingElement->document().wasPrinting())
return;
ElementAnimations* elementAnimations = animatingElement->elementAnimations();
const TransitionMap* activeTransitions = elementAnimations ? &elementAnimations->cssAnimations().m_transitions : nullptr;
const CSSTransitionData* transitionData = style.transitions();
#if ENABLE(ASSERT)
// In debug builds we verify that it would have been safe to avoid populating and testing listedProperties if the style recalc is due to animation.
const bool animationStyleRecalc = false;
#else
// In release builds we avoid the cost of checking for new and interrupted transitions if the style recalc is due to animation.
const bool animationStyleRecalc = elementAnimations && elementAnimations->isAnimationStyleChange();
#endif
BitArray<numCSSProperties> listedProperties;
bool anyTransitionHadTransitionAll = false;
const LayoutObject* layoutObject = animatingElement->layoutObject();
if (!animationStyleRecalc && style.display() != NONE && layoutObject && layoutObject->style() && transitionData) {
const ComputedStyle& oldStyle = *layoutObject->style();
for (size_t i = 0; i < transitionData->propertyList().size(); ++i) {
const CSSTransitionData::TransitionProperty& transitionProperty = transitionData->propertyList()[i];
if (transitionProperty.propertyType != CSSTransitionData::TransitionKnownProperty)
continue;
CSSPropertyID property = resolveCSSPropertyID(transitionProperty.unresolvedProperty);
bool animateAll = property == CSSPropertyAll;
if (animateAll)
anyTransitionHadTransitionAll = true;
const StylePropertyShorthand& propertyList = animateAll ? CSSAnimations::propertiesForTransitionAll() : shorthandForProperty(property);
// If not a shorthand we only execute one iteration of this loop, and refer to the property directly.
for (unsigned j = 0; !j || j < propertyList.length(); ++j) {
CSSPropertyID id = propertyList.length() ? propertyList.properties()[j] : property;
ASSERT(id >= firstCSSProperty);
if (!animateAll) {
if (CSSPropertyMetadata::isInterpolableProperty(id))
listedProperties.set(id - firstCSSProperty);
else
continue;
}
// FIXME: We should transition if an !important property changes even when an animation is running,
// but this is a bit hard to do with the current applyMatchedProperties system.
PropertyHandle property = PropertyHandle(id);
if (!update.activeInterpolationsForAnimations().contains(property)
&& (!elementAnimations || !elementAnimations->cssAnimations().m_previousActiveInterpolationsForAnimations.contains(property))) {
calculateTransitionUpdateForProperty(id, *transitionData, i, oldStyle, style, activeTransitions, update, animatingElement);
}
}
}
}
if (activeTransitions) {
for (const auto& entry : *activeTransitions) {
CSSPropertyID id = entry.key;
if (!anyTransitionHadTransitionAll && !animationStyleRecalc && !listedProperties.get(id - firstCSSProperty)) {
// TODO: Figure out why this fails on Chrome OS login page. crbug.com/365507
// ASSERT(animation.playStateInternal() == Animation::Finished || !(elementAnimations && elementAnimations->isAnimationStyleChange()));
update.cancelTransition(id);
} else if (entry.value.animation->finishedInternal()) {
update.finishTransition(id);
}
}
}
}
