bool DocumentStyleSheetCollection::testAddedStyleSheetRequiresStyleRecalc(StyleSheetContents* stylesheet)
{
// See if all rules on the sheet are scoped to some specific ids or classes.
// Then test if we actually have any of those in the tree at the moment.
HashSet<AtomicStringImpl*> idScopes;
HashSet<AtomicStringImpl*> classScopes;
if (!StyleResolver::determineStylesheetSelectorScopes(stylesheet, idScopes, classScopes))
return true;
// Invalidate the subtrees that match the scopes.
Node* node = m_document->firstChild();
while (node) {
if (!node->isStyledElement()) {
node = node->traverseNextNode();
continue;
}
StyledElement* element = static_cast<StyledElement*>(node);
if (SelectorChecker::elementMatchesSelectorScopes(element, idScopes, classScopes)) {
element->setNeedsStyleRecalc();
// The whole subtree is now invalidated, we can skip to the next sibling.
node = node->traverseNextSibling();
continue;
}
node = node->traverseNextNode();
}
return false;
}
void StyleInvalidationAnalysis::invalidateStyle(Document* document)
{
ASSERT(!m_dirtiesAllStyle);
if (m_idScopes.isEmpty() && m_classScopes.isEmpty())
return;
Node* node = document->firstChild();
while (node) {
if (!node->isStyledElement()) {
node = NodeTraversal::next(node);
continue;
}
StyledElement* element = static_cast<StyledElement*>(node);
if (elementMatchesSelectorScopes(element, m_idScopes, m_classScopes)) {
element->setNeedsStyleRecalc();
// The whole subtree is now invalidated, we can skip to the next sibling.
node = NodeTraversal::nextSkippingChildren(node);
continue;
}
node = NodeTraversal::next(node);
}
}