bool StyleInvalidator::invalidate(Element& element)
{
RecursionCheckpoint checkpoint(&m_recursionData);
bool thisElementNeedsStyleRecalc = checkInvalidationSetsAgainstElement(element);
bool someChildrenNeedStyleRecalc = false;
// foundInvalidationSet() will be true if we are in a subtree of a node with a DescendantInvalidationSet on it.
// We need to check all nodes in the subtree of such a node.
if (m_recursionData.foundInvalidationSet() || element.childNeedsStyleInvalidation())
someChildrenNeedStyleRecalc = invalidateChildren(element);
if (thisElementNeedsStyleRecalc) {
element.setNeedsStyleRecalc(LocalStyleChange);
} else if (m_recursionData.foundInvalidationSet() && someChildrenNeedStyleRecalc) {
// Clone the RenderStyle in order to preserve correct style sharing, if possible. Otherwise recalc style.
if (RenderObject* renderer = element.renderer()) {
ASSERT(renderer->style());
renderer->setStyleInternal(RenderStyle::clone(renderer->style()));
} else {
element.setNeedsStyleRecalc(LocalStyleChange);
}
}
element.clearChildNeedsStyleInvalidation();
element.clearNeedsStyleInvalidation();
return thisElementNeedsStyleRecalc;
}
bool StyleInvalidator::invalidate(Element& element, RecursionData& recursionData, SiblingData& siblingData)
{
siblingData.advance();
RecursionCheckpoint checkpoint(&recursionData);
bool thisElementNeedsStyleRecalc = checkInvalidationSetsAgainstElement(element, recursionData, siblingData);
bool someChildrenNeedStyleRecalc = false;
if (recursionData.hasInvalidationSets() || element.childNeedsStyleInvalidation())
someChildrenNeedStyleRecalc = invalidateChildren(element, recursionData);
if (thisElementNeedsStyleRecalc) {
ASSERT(!recursionData.wholeSubtreeInvalid());
element.setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::StyleInvalidator));
} else if (recursionData.hasInvalidationSets() && someChildrenNeedStyleRecalc) {
// Clone the ComputedStyle in order to preserve correct style sharing, if possible. Otherwise recalc style.
if (LayoutObject* layoutObject = element.layoutObject()) {
layoutObject->setStyleInternal(ComputedStyle::clone(layoutObject->styleRef()));
} else {
TRACE_STYLE_INVALIDATOR_INVALIDATION_IF_ENABLED(element, PreventStyleSharingForParent);
element.setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::StyleInvalidator));
}
}
if (recursionData.insertionPointCrossing() && element.isInsertionPoint())
element.setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::StyleInvalidator));
element.clearChildNeedsStyleInvalidation();
element.clearNeedsStyleInvalidation();
return thisElementNeedsStyleRecalc;
}
bool StyleInvalidator::invalidate(Element& element)
{
RecursionCheckpoint checkpoint(&m_recursionData);
bool thisElementNeedsStyleRecalc = checkInvalidationSetsAgainstElement(element);
bool someChildrenNeedStyleRecalc = false;
if (m_recursionData.hasInvalidationSets() || element.childNeedsStyleInvalidation())
someChildrenNeedStyleRecalc = invalidateChildren(element);
if (thisElementNeedsStyleRecalc) {
element.setNeedsStyleRecalc(m_recursionData.wholeSubtreeInvalid() ? SubtreeStyleChange : LocalStyleChange);
} else if (m_recursionData.hasInvalidationSets() && someChildrenNeedStyleRecalc) {
// Clone the RenderStyle in order to preserve correct style sharing, if possible. Otherwise recalc style.
if (RenderObject* renderer = element.renderer())
renderer->setStyleInternal(RenderStyle::clone(renderer->style()));
else
element.setNeedsStyleRecalc(LocalStyleChange);
}
element.clearChildNeedsStyleInvalidation();
element.clearNeedsStyleInvalidation();
return thisElementNeedsStyleRecalc;
}