void StyleInvalidationAnalysis::analyzeStyleSheet(StyleSheetContents* styleSheetContents)
{
ASSERT(!styleSheetContents->isLoading());
// 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.
const Vector<RefPtr<StyleRuleImport> >& importRules = styleSheetContents->importRules();
for (unsigned i = 0; i < importRules.size(); ++i) {
if (!importRules[i]->styleSheet())
continue;
analyzeStyleSheet(importRules[i]->styleSheet());
if (m_dirtiesAllStyle)
return;
}
const Vector<RefPtr<StyleRuleBase> >& rules = styleSheetContents->childRules();
for (unsigned i = 0; i < rules.size(); i++) {
StyleRuleBase* rule = rules[i].get();
if (!rule->isStyleRule()) {
// FIXME: Media rules and maybe some others could be allowed.
m_dirtiesAllStyle = true;
return;
}
StyleRule* styleRule = static_cast<StyleRule*>(rule);
if (!determineSelectorScopes(styleRule->selectorList(), m_idScopes, m_classScopes)) {
m_dirtiesAllStyle = true;
return;
}
}
}
void StyleSheetInvalidationAnalysis::analyzeStyleSheet(StyleSheetContents* styleSheetContents)
{
// Updating the style on the shadow DOM for image fallback content can bring us here when imports
// are still getting loaded in the main document. Just need to exit early as we will return here
// when the imports finish loading.
if (styleSheetContents->isLoading())
return;
// 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.
const WillBeHeapVector<RefPtrWillBeMember<StyleRuleImport>>& importRules = styleSheetContents->importRules();
for (unsigned i = 0; i < importRules.size(); ++i) {
if (!importRules[i]->styleSheet())
continue;
analyzeStyleSheet(importRules[i]->styleSheet());
if (m_dirtiesAllStyle)
return;
}
if (m_treeScope->rootNode().isShadowRoot())
return;
const WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& rules = styleSheetContents->childRules();
for (unsigned i = 0; i < rules.size(); i++) {
StyleRuleBase* rule = rules[i].get();
if (!rule->isStyleRule()) {
if (ruleAdditionMightRequireDocumentStyleRecalc(rule)) {
m_dirtiesAllStyle = true;
return;
}
continue;
}
StyleRule* styleRule = toStyleRule(rule);
if (!determineSelectorScopes(styleRule->selectorList(), m_idScopes, m_classScopes)) {
m_dirtiesAllStyle = true;
return;
}
}
}
void StyleInvalidationAnalysis::analyzeStyleSheet(StyleSheetContents* styleSheetContents)
{
ASSERT(!styleSheetContents->isLoading());
// 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.
const Vector<RefPtr<StyleRuleImport> >& importRules = styleSheetContents->importRules();
for (unsigned i = 0; i < importRules.size(); ++i) {
if (!importRules[i]->styleSheet())
continue;
analyzeStyleSheet(importRules[i]->styleSheet());
if (m_dirtiesAllStyle)
return;
}
if (styleSheetContents->hasSingleOwnerNode()) {
Node* ownerNode = styleSheetContents->singleOwnerNode();
if (ownerNode && ownerNode->hasTagName(HTMLNames::styleTag) && toHTMLStyleElement(ownerNode)->isRegisteredAsScoped()) {
m_scopingNodes.append(determineScopingNodeForStyleScoped(toHTMLStyleElement(ownerNode), styleSheetContents));
return;
}
}
const Vector<RefPtr<StyleRuleBase> >& rules = styleSheetContents->childRules();
for (unsigned i = 0; i < rules.size(); i++) {
StyleRuleBase* rule = rules[i].get();
if (!rule->isStyleRule()) {
if (ruleAdditionMightRequireDocumentStyleRecalc(rule)) {
m_dirtiesAllStyle = true;
return;
}
continue;
}
StyleRule* styleRule = toStyleRule(rule);
if (!determineSelectorScopes(styleRule->selectorList(), m_idScopes, m_classScopes)) {
m_dirtiesAllStyle = true;
return;
}
}
}
StyleSheetInvalidationAnalysis::StyleSheetInvalidationAnalysis(const TreeScope& treeScope, const WillBeHeapVector<RawPtrWillBeMember<StyleSheetContents>>& sheets)
: m_treeScope(&treeScope)
{
for (unsigned i = 0; i < sheets.size() && !m_dirtiesAllStyle; ++i)
analyzeStyleSheet(sheets[i]);
}
StyleInvalidationAnalysis::StyleInvalidationAnalysis(const Vector<StyleSheetContents*>& sheets)
: m_dirtiesAllStyle(false)
{
for (unsigned i = 0; i < sheets.size() && !m_dirtiesAllStyle; ++i)
analyzeStyleSheet(sheets[i]);
}
