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/*
* Copyright (C) 2008, 2009 Apple 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 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 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.
*
*/
#ifndef WorkerGlobalScope_h
#define WorkerGlobalScope_h
#include "EventListener.h"
#include "EventTarget.h"
#include "ScriptExecutionContext.h"
#include "WorkerEventQueue.h"
#include "WorkerScriptController.h"
#include <memory>
#include <wtf/Assertions.h>
#include <wtf/HashMap.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/TypeCasts.h>
#include <wtf/text/AtomicStringHash.h>
namespace Inspector {
class ConsoleMessage;
}
namespace WebCore {
class Blob;
class ContentSecurityPolicyResponseHeaders;
class ScheduledAction;
class WorkerLocation;
class WorkerNavigator;
class WorkerThread;
class WorkerGlobalScope : public RefCounted<WorkerGlobalScope>, public ScriptExecutionContext, public EventTargetWithInlineData {
public:
virtual ~WorkerGlobalScope();
virtual bool isWorkerGlobalScope() const override { return true; }
virtual ScriptExecutionContext* scriptExecutionContext() const override final { return const_cast<WorkerGlobalScope*>(this); }
virtual bool isDedicatedWorkerGlobalScope() const { return false; }
virtual const URL& url() const override final { return m_url; }
virtual URL completeURL(const String&) const override final;
virtual String userAgent(const URL&) const override;
virtual void disableEval(const String& errorMessage) override;
bool shouldBypassMainWorldContentSecurityPolicy() const override final { return m_shouldBypassMainWorldContentSecurityPolicy; }
WorkerScriptController* script() { return m_script.get(); }
void clearScript() { m_script = nullptr; }
WorkerThread& thread() const { return m_thread; }
using ScriptExecutionContext::hasPendingActivity;
virtual void postTask(Task) override; // Executes the task on context's thread asynchronously.
// WorkerGlobalScope
WorkerGlobalScope* self() { return this; }
WorkerLocation* location() const;
void close();
// WorkerUtils
virtual void importScripts(const Vector<String>& urls, ExceptionCode&);
WorkerNavigator* navigator() const;
// Timers
int setTimeout(std::unique_ptr<ScheduledAction>, int timeout);
void clearTimeout(int timeoutId);
int setInterval(std::unique_ptr<ScheduledAction>, int timeout);
void clearInterval(int timeoutId);
virtual bool isContextThread() const override;
virtual bool isJSExecutionForbidden() const override;
// These methods are used for GC marking. See JSWorkerGlobalScope::visitChildrenVirtual(SlotVisitor&) in
// JSWorkerGlobalScopeCustom.cpp.
WorkerNavigator* optionalNavigator() const { return m_navigator.get(); }
WorkerLocation* optionalLocation() const { return m_location.get(); }
using RefCounted<WorkerGlobalScope>::ref;
using RefCounted<WorkerGlobalScope>::deref;
bool isClosing() { return m_closing; }
// An observer interface to be notified when the worker thread is getting stopped.
class Observer {
WTF_MAKE_NONCOPYABLE(Observer);
public:
Observer(WorkerGlobalScope*);
virtual ~Observer();
virtual void notifyStop() = 0;
void stopObserving();
private:
WorkerGlobalScope* m_context;
};
friend class Observer;
void registerObserver(Observer*);
void unregisterObserver(Observer*);
void notifyObserversOfStop();
virtual SecurityOrigin* topOrigin() const override { return m_topOrigin.get(); }
void addConsoleMessage(std::unique_ptr<Inspector::ConsoleMessage>);
virtual void addConsoleMessage(MessageSource, MessageLevel, const String& message, unsigned long requestIdentifier = 0) override;
#if ENABLE(SUBTLE_CRYPTO)
virtual bool wrapCryptoKey(const Vector<uint8_t>& key, Vector<uint8_t>& wrappedKey) override;
virtual bool unwrapCryptoKey(const Vector<uint8_t>& wrappedKey, Vector<uint8_t>& key) override;
#endif
protected:
WorkerGlobalScope(const URL&, const String& userAgent, WorkerThread&, bool shouldBypassMainWorldContentSecurityPolicy, PassRefPtr<SecurityOrigin> topOrigin);
void applyContentSecurityPolicyResponseHeaders(const ContentSecurityPolicyResponseHeaders&);
virtual void logExceptionToConsole(const String& errorMessage, const String& sourceURL, int lineNumber, int columnNumber, RefPtr<Inspector::ScriptCallStack>&&) override;
void addMessageToWorkerConsole(std::unique_ptr<Inspector::ConsoleMessage>);
void addMessageToWorkerConsole(MessageSource, MessageLevel, const String& message, const String& sourceURL, unsigned lineNumber, unsigned columnNumber, RefPtr<Inspector::ScriptCallStack>&&, JSC::ExecState* = 0, unsigned long requestIdentifier = 0);
private:
virtual void refScriptExecutionContext() override { ref(); }
virtual void derefScriptExecutionContext() override { deref(); }
virtual void refEventTarget() override final { ref(); }
virtual void derefEventTarget() override final { deref(); }
virtual void addMessage(MessageSource, MessageLevel, const String& message, const String& sourceURL, unsigned lineNumber, unsigned columnNumber, RefPtr<Inspector::ScriptCallStack>&&, JSC::ExecState* = 0, unsigned long requestIdentifier = 0) override;
virtual EventTarget* errorEventTarget() override;
virtual WorkerEventQueue& eventQueue() const override final;
URL m_url;
String m_userAgent;
mutable RefPtr<WorkerLocation> m_location;
mutable RefPtr<WorkerNavigator> m_navigator;
std::unique_ptr<WorkerScriptController> m_script;
WorkerThread& m_thread;
bool m_closing;
bool m_shouldBypassMainWorldContentSecurityPolicy;
HashSet<Observer*> m_workerObservers;
mutable WorkerEventQueue m_eventQueue;
RefPtr<SecurityOrigin> m_topOrigin;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::WorkerGlobalScope)
static bool isType(const WebCore::ScriptExecutionContext& context) { return context.isWorkerGlobalScope(); }
SPECIALIZE_TYPE_TRAITS_END()
#endif // WorkerGlobalScope_h
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