ContentExtension.cpp [plain text]
#include "config.h"
#include "ContentExtension.h"
#include "CompiledContentExtension.h"
#include "ContentExtensionsBackend.h"
#include "StyleSheetContents.h"
#include <wtf/text/StringBuilder.h>
#if ENABLE(CONTENT_EXTENSIONS)
namespace WebCore {
namespace ContentExtensions {
RefPtr<ContentExtension> ContentExtension::create(const String& identifier, Ref<CompiledContentExtension>&& compiledExtension)
{
return adoptRef(*new ContentExtension(identifier, WTF::move(compiledExtension)));
}
ContentExtension::ContentExtension(const String& identifier, Ref<CompiledContentExtension>&& compiledExtension)
: m_identifier(identifier)
, m_compiledExtension(WTF::move(compiledExtension))
, m_parsedGlobalDisplayNoneStyleSheet(false)
{
}
StyleSheetContents* ContentExtension::globalDisplayNoneStyleSheet()
{
if (m_parsedGlobalDisplayNoneStyleSheet)
return m_globalDisplayNoneStyleSheet.get();
m_parsedGlobalDisplayNoneStyleSheet = true;
Vector<String> selectors = m_compiledExtension->globalDisplayNoneSelectors();
if (selectors.isEmpty())
return nullptr;
StringBuilder css;
for (auto& selector : selectors) {
css.append(selector);
css.append("{");
css.append(ContentExtensionsBackend::displayNoneCSSRule());
css.append("}");
}
m_globalDisplayNoneStyleSheet = StyleSheetContents::create();
m_globalDisplayNoneStyleSheet->setIsUserStyleSheet(true);
if (!m_globalDisplayNoneStyleSheet->parseString(css.toString()))
m_globalDisplayNoneStyleSheet = nullptr;
return m_globalDisplayNoneStyleSheet.get();
}
const DFABytecodeInterpreter::Actions& ContentExtension::cachedDomainActions(const String& domain)
{
if (m_cachedDomain != domain) {
DFABytecodeInterpreter interpreter(m_compiledExtension->domainFiltersBytecode(), m_compiledExtension->domainFiltersBytecodeLength());
const uint16_t allLoadTypesAndResourceTypes = LoadTypeMask | ResourceTypeMask;
auto domainActions = interpreter.interpret(domain.utf8(), allLoadTypesAndResourceTypes);
m_cachedDomainActions.clear();
for (uint64_t action : domainActions)
m_cachedDomainActions.add(action);
m_cachedDomain = domain;
}
return m_cachedDomainActions;
}
} }
#endif // ENABLE(CONTENT_EXTENSIONS)