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/*
* Copyright (C) 2008 Apple Inc. All Rights Reserved.
* Copyright (C) 2009 Google Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "config.h"
#if ENABLE(WORKERS)
#include "WorkerContext.h"
#include "ActiveDOMObject.h"
#include "DOMTimer.h"
#include "DOMWindow.h"
#include "Event.h"
#include "EventException.h"
#include "MessagePort.h"
#include "NotImplemented.h"
#include "ScriptSourceCode.h"
#include "ScriptValue.h"
#include "SecurityOrigin.h"
#include "WorkerLocation.h"
#include "WorkerNavigator.h"
#include "WorkerObjectProxy.h"
#include "WorkerScriptLoader.h"
#include "WorkerThread.h"
#include "WorkerThreadableLoader.h"
#include "XMLHttpRequestException.h"
#include <wtf/RefPtr.h>
#if ENABLE(NOTIFICATIONS)
#include "NotificationCenter.h"
#endif
namespace WebCore {
WorkerContext::WorkerContext(const KURL& url, const String& userAgent, WorkerThread* thread)
: m_url(url)
, m_userAgent(userAgent)
, m_script(new WorkerScriptController(this))
, m_thread(thread)
, m_closing(false)
{
setSecurityOrigin(SecurityOrigin::create(url));
}
WorkerContext::~WorkerContext()
{
ASSERT(currentThread() == thread()->threadID());
#if ENABLE(NOTIFICATIONS)
m_notifications.clear();
#endif
// Notify proxy that we are going away. This can free the WorkerThread object, so do not access it after this.
thread()->workerReportingProxy().workerContextDestroyed();
}
ScriptExecutionContext* WorkerContext::scriptExecutionContext() const
{
return const_cast<WorkerContext*>(this);
}
const KURL& WorkerContext::virtualURL() const
{
return m_url;
}
KURL WorkerContext::virtualCompleteURL(const String& url) const
{
return completeURL(url);
}
KURL WorkerContext::completeURL(const String& url) const
{
// Always return a null URL when passed a null string.
// FIXME: Should we change the KURL constructor to have this behavior?
if (url.isNull())
return KURL();
// Always use UTF-8 in Workers.
return KURL(m_url, url);
}
String WorkerContext::userAgent(const KURL&) const
{
return m_userAgent;
}
WorkerLocation* WorkerContext::location() const
{
if (!m_location)
m_location = WorkerLocation::create(m_url);
return m_location.get();
}
void WorkerContext::close()
{
if (m_closing)
return;
m_closing = true;
// Notify parent that this context is closed.
thread()->workerReportingProxy().workerContextClosed();
m_thread->stop();
}
WorkerNavigator* WorkerContext::navigator() const
{
if (!m_navigator)
m_navigator = WorkerNavigator::create(m_userAgent);
return m_navigator.get();
}
bool WorkerContext::hasPendingActivity() const
{
ActiveDOMObjectsMap& activeObjects = activeDOMObjects();
ActiveDOMObjectsMap::const_iterator activeObjectsEnd = activeObjects.end();
for (ActiveDOMObjectsMap::const_iterator iter = activeObjects.begin(); iter != activeObjectsEnd; ++iter) {
if (iter->first->hasPendingActivity())
return true;
}
// Keep the worker active as long as there is a MessagePort with pending activity or that is remotely entangled.
HashSet<MessagePort*>::const_iterator messagePortsEnd = messagePorts().end();
for (HashSet<MessagePort*>::const_iterator iter = messagePorts().begin(); iter != messagePortsEnd; ++iter) {
if ((*iter)->hasPendingActivity() || ((*iter)->isEntangled() && !(*iter)->locallyEntangledPort()))
return true;
}
return false;
}
void WorkerContext::resourceRetrievedByXMLHttpRequest(unsigned long, const ScriptString&)
{
// FIXME: The implementation is pending the fixes in https://bugs.webkit.org/show_bug.cgi?id=23175
notImplemented();
}
void WorkerContext::scriptImported(unsigned long, const String&)
{
// FIXME: The implementation is pending the fixes in https://bugs.webkit.org/show_bug.cgi?id=23175
notImplemented();
}
void WorkerContext::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> eventListener, bool)
{
EventListenersMap::iterator iter = m_eventListeners.find(eventType);
if (iter == m_eventListeners.end()) {
ListenerVector listeners;
listeners.append(eventListener);
m_eventListeners.add(eventType, listeners);
} else {
ListenerVector& listeners = iter->second;
for (ListenerVector::iterator listenerIter = listeners.begin(); listenerIter != listeners.end(); ++listenerIter) {
if (*listenerIter == eventListener)
return;
}
listeners.append(eventListener);
m_eventListeners.add(eventType, listeners);
}
}
void WorkerContext::removeEventListener(const AtomicString& eventType, EventListener* eventListener, bool)
{
EventListenersMap::iterator iter = m_eventListeners.find(eventType);
if (iter == m_eventListeners.end())
return;
ListenerVector& listeners = iter->second;
for (ListenerVector::const_iterator listenerIter = listeners.begin(); listenerIter != listeners.end(); ++listenerIter) {
if (*listenerIter == eventListener) {
listeners.remove(listenerIter - listeners.begin());
return;
}
}
}
bool WorkerContext::dispatchEvent(PassRefPtr<Event> event, ExceptionCode& ec)
{
if (!event || event->type().isEmpty()) {
ec = EventException::UNSPECIFIED_EVENT_TYPE_ERR;
return true;
}
ListenerVector listenersCopy = m_eventListeners.get(event->type());
for (ListenerVector::const_iterator listenerIter = listenersCopy.begin(); listenerIter != listenersCopy.end(); ++listenerIter) {
event->setTarget(this);
event->setCurrentTarget(this);
listenerIter->get()->handleEvent(event.get(), false);
}
return !event->defaultPrevented();
}
void WorkerContext::postTask(PassRefPtr<Task> task)
{
thread()->runLoop().postTask(task);
}
int WorkerContext::setTimeout(ScheduledAction* action, int timeout)
{
return DOMTimer::install(scriptExecutionContext(), action, timeout, true);
}
void WorkerContext::clearTimeout(int timeoutId)
{
DOMTimer::removeById(scriptExecutionContext(), timeoutId);
}
int WorkerContext::setInterval(ScheduledAction* action, int timeout)
{
return DOMTimer::install(scriptExecutionContext(), action, timeout, false);
}
void WorkerContext::clearInterval(int timeoutId)
{
DOMTimer::removeById(scriptExecutionContext(), timeoutId);
}
void WorkerContext::importScripts(const Vector<String>& urls, const String& callerURL, int callerLine, ExceptionCode& ec)
{
ec = 0;
Vector<String>::const_iterator urlsEnd = urls.end();
Vector<KURL> completedURLs;
for (Vector<String>::const_iterator it = urls.begin(); it != urlsEnd; ++it) {
const KURL& url = scriptExecutionContext()->completeURL(*it);
if (!url.isValid()) {
ec = SYNTAX_ERR;
return;
}
completedURLs.append(url);
}
String securityOrigin = scriptExecutionContext()->securityOrigin()->toString();
Vector<KURL>::const_iterator end = completedURLs.end();
for (Vector<KURL>::const_iterator it = completedURLs.begin(); it != end; ++it) {
WorkerScriptLoader scriptLoader;
scriptLoader.loadSynchronously(scriptExecutionContext(), *it, AllowCrossOriginRequests);
// If the fetching attempt failed, throw a NETWORK_ERR exception and abort all these steps.
if (scriptLoader.failed()) {
ec = XMLHttpRequestException::NETWORK_ERR;
return;
}
scriptExecutionContext()->scriptImported(scriptLoader.identifier(), scriptLoader.script());
scriptExecutionContext()->addMessage(InspectorControllerDestination, JSMessageSource, LogMessageType, LogMessageLevel, "Worker script imported: \"" + *it + "\".", callerLine, callerURL);
ScriptValue exception;
m_script->evaluate(ScriptSourceCode(scriptLoader.script(), *it), &exception);
if (!exception.hasNoValue()) {
m_script->setException(exception);
return;
}
}
}
void WorkerContext::reportException(const String& errorMessage, int lineNumber, const String& sourceURL)
{
bool errorHandled = false;
if (onerror())
errorHandled = onerror()->reportError(errorMessage, sourceURL, lineNumber);
if (!errorHandled)
thread()->workerReportingProxy().postExceptionToWorkerObject(errorMessage, lineNumber, sourceURL);
}
void WorkerContext::addMessage(MessageDestination destination, MessageSource source, MessageType type, MessageLevel level, const String& message, unsigned lineNumber, const String& sourceURL)
{
thread()->workerReportingProxy().postConsoleMessageToWorkerObject(destination, source, type, level, message, lineNumber, sourceURL);
}
#if ENABLE(NOTIFICATIONS)
NotificationCenter* WorkerContext::webkitNotifications() const
{
if (!m_notifications)
m_notifications = NotificationCenter::create(scriptExecutionContext(), m_thread->getNotificationPresenter());
return m_notifications.get();
}
#endif
} // namespace WebCore
#endif // ENABLE(WORKERS)
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