Style::Scope* CSSStyleSheet::styleScope()
{
auto* ownerNode = rootStyleSheet().ownerNode();
if (!ownerNode)
return nullptr;
return &Style::Scope::forNode(*ownerNode);
}
bool StyleSheetContents::loadCompleted() const {
StyleSheetContents* parentSheet = parentStyleSheet();
if (parentSheet)
return parentSheet->loadCompleted();
StyleSheetContents* root = rootStyleSheet();
return root->m_loadingClients.isEmpty();
}
Node* StyleSheetContents::singleOwnerNode() const {
StyleSheetContents* root = rootStyleSheet();
if (!root->hasOneClient())
return nullptr;
if (root->m_loadingClients.size())
return (*root->m_loadingClients.begin())->ownerNode();
return (*root->m_completedClients.begin())->ownerNode();
}
void StyleSheetContents::startLoadingDynamicSheet() {
StyleSheetContents* root = rootStyleSheet();
for (const auto& client : root->m_loadingClients)
client->startLoadingDynamicSheet();
// Copy the completed clients to a vector for iteration.
// startLoadingDynamicSheet will move the style sheet from the completed state
// to the loading state which modifies the set of completed clients. We
// therefore need the copy in order to not modify the set of completed clients
// while iterating it.
HeapVector<Member<CSSStyleSheet>> completedClients;
copyToVector(root->m_completedClients, completedClients);
for (unsigned i = 0; i < completedClients.size(); ++i)
completedClients[i]->startLoadingDynamicSheet();
}
void StyleSheetContents::startLoadingDynamicSheet()
{
StyleSheetContents* root = rootStyleSheet();
for (ClientsIterator it = root->m_loadingClients.begin(); it != root->m_loadingClients.end(); ++it)
(*it)->startLoadingDynamicSheet();
// Copy the completed clients to a vector for iteration.
// startLoadingDynamicSheet will move the style sheet from the
// completed state to the loading state which modifies the set of
// completed clients. We therefore need the copy in order to not
// modify the set of completed clients while iterating it.
WillBeHeapVector<RawPtrWillBeMember<CSSStyleSheet> > completedClients;
copyToVector(root->m_completedClients, completedClients);
for (unsigned i = 0; i < completedClients.size(); ++i)
completedClients[i]->startLoadingDynamicSheet();
}
void StyleSheetContents::checkLoaded()
{
if (isLoading())
return;
// Avoid |this| being deleted by scripts that run via
// ScriptableDocumentParser::executeScriptsWaitingForResources().
// See https://bugs.webkit.org/show_bug.cgi?id=95106
RefPtrWillBeRawPtr<StyleSheetContents> protect(this);
StyleSheetContents* parentSheet = parentStyleSheet();
if (parentSheet) {
parentSheet->checkLoaded();
return;
}
ASSERT(this == rootStyleSheet());
if (m_loadingClients.isEmpty())
return;
// Avoid |CSSSStyleSheet| and |ownerNode| being deleted by scripts that run via
// ScriptableDocumentParser::executeScriptsWaitingForResources(). Also protect
// the |CSSStyleSheet| from being deleted during iteration via the |sheetLoaded|
// method.
//
// When a sheet is loaded it is moved from the set of loading clients
// to the set of completed clients. We therefore need the copy in order to
// not modify the set while iterating it.
WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> > loadingClients;
copyToVector(m_loadingClients, loadingClients);
for (unsigned i = 0; i < loadingClients.size(); ++i) {
if (loadingClients[i]->loadCompleted())
continue;
// sheetLoaded might be invoked after its owner node is removed from document.
if (RefPtrWillBeRawPtr<Node> ownerNode = loadingClients[i]->ownerNode()) {
if (loadingClients[i]->sheetLoaded())
ownerNode->notifyLoadedSheetAndAllCriticalSubresources(m_didLoadErrorOccur);
}
}
}
void StyleSheetContents::checkLoaded() {
if (isLoading())
return;
StyleSheetContents* parentSheet = parentStyleSheet();
if (parentSheet) {
parentSheet->checkLoaded();
return;
}
ASSERT(this == rootStyleSheet());
if (m_loadingClients.isEmpty())
return;
// Avoid |CSSSStyleSheet| and |ownerNode| being deleted by scripts that run
// via ScriptableDocumentParser::executeScriptsWaitingForResources(). Also
// protect the |CSSStyleSheet| from being deleted during iteration via the
// |sheetLoaded| method.
//
// When a sheet is loaded it is moved from the set of loading clients
// to the set of completed clients. We therefore need the copy in order to
// not modify the set while iterating it.
HeapVector<Member<CSSStyleSheet>> loadingClients;
copyToVector(m_loadingClients, loadingClients);
for (unsigned i = 0; i < loadingClients.size(); ++i) {
if (loadingClients[i]->loadCompleted())
continue;
// sheetLoaded might be invoked after its owner node is removed from
// document.
if (Node* ownerNode = loadingClients[i]->ownerNode()) {
if (loadingClients[i]->sheetLoaded())
ownerNode->notifyLoadedSheetAndAllCriticalSubresources(
m_didLoadErrorOccur ? Node::ErrorOccurredLoadingSubresource
: Node::NoErrorLoadingSubresource);
}
}
}
Document* CSSStyleSheet::ownerDocument() const
{
auto& root = rootStyleSheet();
return root.ownerNode() ? &root.ownerNode()->document() : nullptr;
}
void StyleSheetContents::notifyRemoveFontFaceRule(
const StyleRuleFontFace* fontFaceRule) {
StyleSheetContents* root = rootStyleSheet();
removeFontFaceRules(root->m_loadingClients, fontFaceRule);
removeFontFaceRules(root->m_completedClients, fontFaceRule);
}
Document* StyleSheetContents::singleOwnerDocument() const {
StyleSheetContents* root = rootStyleSheet();
return root->clientSingleOwnerDocument();
}
bool StyleSheetContents::hasSingleOwnerNode() const {
return rootStyleSheet()->hasOneClient();
}
