Worker.h 3.3 KB

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  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. #ifndef Worker_h
  27. #define Worker_h
  28. #if ENABLE(WORKERS)
  29. #include "AbstractWorker.h"
  30. #include "ActiveDOMObject.h"
  31. #include "EventListener.h"
  32. #include "EventNames.h"
  33. #include "EventTarget.h"
  34. #include "MessagePort.h"
  35. #include "WorkerScriptLoaderClient.h"
  36. #include <wtf/Forward.h>
  37. #include <wtf/PassRefPtr.h>
  38. #include <wtf/RefPtr.h>
  39. #include <wtf/text/AtomicStringHash.h>
  40. namespace WebCore {
  41. class ScriptExecutionContext;
  42. class WorkerContextProxy;
  43. class WorkerScriptLoader;
  44. typedef int ExceptionCode;
  45. class Worker : public AbstractWorker, private WorkerScriptLoaderClient {
  46. public:
  47. static PassRefPtr<Worker> create(ScriptExecutionContext*, const String& url, ExceptionCode&);
  48. virtual ~Worker();
  49. virtual const AtomicString& interfaceName() const OVERRIDE;
  50. void postMessage(PassRefPtr<SerializedScriptValue> message, const MessagePortArray*, ExceptionCode&);
  51. // Needed for Objective-C bindings (see bug 28774).
  52. void postMessage(PassRefPtr<SerializedScriptValue> message, MessagePort*, ExceptionCode&);
  53. void terminate();
  54. virtual bool canSuspend() const OVERRIDE;
  55. virtual void stop() OVERRIDE;
  56. virtual bool hasPendingActivity() const OVERRIDE;
  57. DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
  58. private:
  59. explicit Worker(ScriptExecutionContext*);
  60. // WorkerScriptLoaderClient callbacks
  61. virtual void didReceiveResponse(unsigned long identifier, const ResourceResponse&) OVERRIDE;
  62. virtual void notifyFinished() OVERRIDE;
  63. virtual void refEventTarget() OVERRIDE { ref(); }
  64. virtual void derefEventTarget() OVERRIDE { deref(); }
  65. RefPtr<WorkerScriptLoader> m_scriptLoader;
  66. WorkerContextProxy* m_contextProxy; // The proxy outlives the worker to perform thread shutdown.
  67. };
  68. } // namespace WebCore
  69. #endif // ENABLE(WORKERS)
  70. #endif // Worker_h