#include "config.h"
#if ENABLE(WORKERS)
#include "Worker.h"
#include "DOMWindow.h"
#include "CachedResourceLoader.h"
#include "Document.h"
#include "EventException.h"
#include "EventListener.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "FeatureObserver.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "InspectorInstrumentation.h"
#include "MessageEvent.h"
#include "TextEncoding.h"
#include "WorkerContextProxy.h"
#include "WorkerScriptLoader.h"
#include "WorkerThread.h"
#include <wtf/MainThread.h>
namespace WebCore {
inline Worker::Worker(ScriptExecutionContext* context)
: AbstractWorker(context)
, m_contextProxy(WorkerContextProxy::create(this))
{
}
PassRefPtr<Worker> Worker::create(ScriptExecutionContext* context, const String& url, ExceptionCode& ec)
{
ASSERT(isMainThread());
FeatureObserver::observe(static_cast<Document*>(context)->domWindow(), FeatureObserver::WorkerStart);
RefPtr<Worker> worker = adoptRef(new Worker(context));
worker->suspendIfNeeded();
KURL scriptURL = worker->resolveURL(url, ec);
if (scriptURL.isEmpty())
return 0;
worker->setPendingActivity(worker.get());
worker->m_scriptLoader = WorkerScriptLoader::create();
#if PLATFORM(BLACKBERRY)
worker->m_scriptLoader->setTargetType(ResourceRequest::TargetIsWorker);
#endif
worker->m_scriptLoader->loadAsynchronously(context, scriptURL, DenyCrossOriginRequests, worker.get());
return worker.release();
}
Worker::~Worker()
{
ASSERT(isMainThread());
ASSERT(scriptExecutionContext()); m_contextProxy->workerObjectDestroyed();
}
const AtomicString& Worker::interfaceName() const
{
return eventNames().interfaceForWorker;
}
void Worker::postMessage(PassRefPtr<SerializedScriptValue> message, MessagePort* port, ExceptionCode& ec)
{
MessagePortArray ports;
if (port)
ports.append(port);
postMessage(message, &ports, ec);
}
void Worker::postMessage(PassRefPtr<SerializedScriptValue> message, const MessagePortArray* ports, ExceptionCode& ec)
{
OwnPtr<MessagePortChannelArray> channels = MessagePort::disentanglePorts(ports, ec);
if (ec)
return;
m_contextProxy->postMessageToWorkerContext(message, channels.release());
}
void Worker::terminate()
{
m_contextProxy->terminateWorkerContext();
}
bool Worker::canSuspend() const
{
return false;
}
void Worker::stop()
{
terminate();
}
bool Worker::hasPendingActivity() const
{
return m_contextProxy->hasPendingActivity() || ActiveDOMObject::hasPendingActivity();
}
void Worker::didReceiveResponse(unsigned long identifier, const ResourceResponse&)
{
InspectorInstrumentation::didReceiveScriptResponse(scriptExecutionContext(), identifier);
}
void Worker::notifyFinished()
{
if (m_scriptLoader->failed())
dispatchEvent(Event::create(eventNames().errorEvent, false, true));
else {
WorkerThreadStartMode startMode = DontPauseWorkerContextOnStart;
if (InspectorInstrumentation::shouldPauseDedicatedWorkerOnStart(scriptExecutionContext()))
startMode = PauseWorkerContextOnStart;
m_contextProxy->startWorkerContext(m_scriptLoader->url(), scriptExecutionContext()->userAgent(m_scriptLoader->url()), m_scriptLoader->script(), startMode);
InspectorInstrumentation::scriptImported(scriptExecutionContext(), m_scriptLoader->identifier(), m_scriptLoader->script());
}
m_scriptLoader = nullptr;
unsetPendingActivity(this);
}
}
#endif // ENABLE(WORKERS)