1/* 2 * Copyright (C) 2008, 2010 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 */ 26 27#ifndef Worker_h 28#define Worker_h 29 30#include "core/dom/ActiveDOMObject.h" 31#include "core/dom/MessagePort.h" 32#include "core/events/EventListener.h" 33#include "core/events/EventTarget.h" 34#include "core/workers/AbstractWorker.h" 35#include "core/workers/WorkerScriptLoaderClient.h" 36#include "platform/heap/Handle.h" 37#include "wtf/Forward.h" 38#include "wtf/PassRefPtr.h" 39#include "wtf/RefPtr.h" 40#include "wtf/text/AtomicStringHash.h" 41 42namespace blink { 43 44class ExceptionState; 45class ExecutionContext; 46class WorkerGlobalScopeProxy; 47class WorkerScriptLoader; 48 49class Worker FINAL : public AbstractWorker, private WorkerScriptLoaderClient { 50 DEFINE_WRAPPERTYPEINFO(); 51public: 52 static PassRefPtrWillBeRawPtr<Worker> create(ExecutionContext*, const String& url, ExceptionState&); 53 virtual ~Worker(); 54 55 virtual const AtomicString& interfaceName() const OVERRIDE; 56 57 void postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> message, const MessagePortArray*, ExceptionState&); 58 59 void terminate(); 60 61 virtual void stop() OVERRIDE; 62 virtual bool hasPendingActivity() const OVERRIDE; 63 64 DEFINE_ATTRIBUTE_EVENT_LISTENER(message); 65 66 virtual void trace(Visitor*) OVERRIDE; 67 68private: 69 explicit Worker(ExecutionContext*); 70 71 // WorkerScriptLoaderClient callbacks 72 virtual void didReceiveResponse(unsigned long identifier, const ResourceResponse&) OVERRIDE; 73 virtual void notifyFinished() OVERRIDE; 74 75 RefPtr<WorkerScriptLoader> m_scriptLoader; 76 WorkerGlobalScopeProxy* m_contextProxy; // The proxy outlives the worker to perform thread shutdown. 77}; 78 79} // namespace blink 80 81#endif // Worker_h 82