JSCustomXPathNSResolver.cpp [plain text]
#include "config.h"
#include "JSCustomXPathNSResolver.h"
#if ENABLE(XPATH)
#include "CString.h"
#include "DOMWindow.h"
#include "Document.h"
#include "ExceptionCode.h"
#include "Frame.h"
#include "Page.h"
#include "kjs_binding.h"
#include "kjs_proxy.h"
#include "kjs_window.h"
namespace WebCore {
using namespace KJS;
PassRefPtr<JSCustomXPathNSResolver> JSCustomXPathNSResolver::create(KJS::ExecState* exec, KJS::JSValue* value)
{
if (value->isUndefinedOrNull())
return 0;
JSObject* resolverObject = value->getObject();
if (!resolverObject) {
setDOMException(exec, TYPE_MISMATCH_ERR);
return 0;
}
return new JSCustomXPathNSResolver(resolverObject, KJS::Window::retrieveActive(exec)->impl()->frame());
}
JSCustomXPathNSResolver::JSCustomXPathNSResolver(JSObject* customResolver, Frame* frame)
: m_customResolver(customResolver)
, m_frame(frame)
{
}
JSCustomXPathNSResolver::~JSCustomXPathNSResolver()
{
}
String JSCustomXPathNSResolver::lookupNamespaceURI(const String& prefix)
{
ASSERT(m_customResolver);
if (!m_frame)
return String();
if (!m_frame->scriptProxy()->isEnabled())
return String();
JSLock lock;
JSGlobalObject* globalObject = m_frame->scriptProxy()->globalObject();
ExecState* exec = globalObject->globalExec();
JSValue* lookupNamespaceURIFuncValue = m_customResolver->get(exec, "lookupNamespaceURI");
JSObject* lookupNamespaceURIFunc = 0;
if (lookupNamespaceURIFuncValue->isObject()) {
lookupNamespaceURIFunc = static_cast<JSObject*>(lookupNamespaceURIFuncValue);
if (!lookupNamespaceURIFunc->implementsCall())
lookupNamespaceURIFunc = 0;
}
if (!lookupNamespaceURIFunc && !m_customResolver->implementsCall()) {
if (Page* page = m_frame->page())
page->chrome()->addMessageToConsole(JSMessageSource, ErrorMessageLevel, "XPathNSResolver does not have a lookupNamespaceURI method.", 0, String());
return String();
}
RefPtr<JSCustomXPathNSResolver> selfProtector(this);
List args;
args.append(jsString(prefix));
String result;
JSValue* retval;
globalObject->startTimeoutCheck();
if (lookupNamespaceURIFunc)
retval = lookupNamespaceURIFunc->call(exec, m_customResolver, args);
else
retval = m_customResolver->call(exec, m_customResolver, args);
globalObject->stopTimeoutCheck();
if (exec->hadException()) {
JSObject* exception = exec->exception()->toObject(exec);
String message = exception->get(exec, exec->propertyNames().message)->toString(exec);
int lineNumber = exception->get(exec, "line")->toInt32(exec);
String sourceURL = exception->get(exec, "sourceURL")->toString(exec);
if (Interpreter::shouldPrintExceptions())
printf("XPathNSResolver: %s\n", message.utf8().data());
if (Page* page = m_frame->page())
page->chrome()->addMessageToConsole(JSMessageSource, ErrorMessageLevel, message, lineNumber, sourceURL);
exec->clearException();
} else {
if (!retval->isUndefinedOrNull())
result = retval->toString(exec);
}
Document::updateDocumentsRendering();
return result;
}
}
#endif // ENABLE(XPATH)