WebCore/dom/DedicatedWorker.h

   1 /*
   2  * Copyright (C) 2008 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 DedicatedWorker_h
  28 #define DedicatedWorker_h
  29
  30 #if ENABLE(WORKERS)
  31
  32 #include "ActiveDOMObject.h"
  33 #include "CachedResourceClient.h"
  34 #include "CachedResourceHandle.h"
  35 #include "EventListener.h"
  36 #include <wtf/PassRefPtr.h>
  37 #include <wtf/RefCounted.h>
  38 #include <wtf/RefPtr.h>
  39
  40 namespace WebCore {
  41
  42     class CachedResource;
  43     class CachedScript;
  44     class Document;
  45     class ScriptExecutionContext;
  46     class MessagePort;
  47     class String;
  48
  49     typedef int ExceptionCode;
  50
  51     class DedicatedWorker : public RefCounted<DedicatedWorker>, public ActiveDOMObject, private CachedResourceClient {
  52     public:
  53         static PassRefPtr<DedicatedWorker> create(const String& url, Document* document, ExceptionCode& ec) { return adoptRef(new DedicatedWorker(url, document, ec)); }
  54         ~DedicatedWorker();
  55
  56         Document* document() const;
  57
  58         PassRefPtr<MessagePort> startConversation(ScriptExecutionContext*, const String& message);
  59         void close();
  60         void postMessage(const String& message, MessagePort* port = 0);
  61
  62         void setOnMessageListener(PassRefPtr<EventListener> eventListener) { m_onMessageListener = eventListener; }
  63         EventListener* onMessageListener() const { return m_onMessageListener.get(); }
  64
  65         void setOnCloseListener(PassRefPtr<EventListener> eventListener) { m_onCloseListener = eventListener; }
  66         EventListener* onCloseListener() const { return m_onCloseListener.get(); }
  67
  68         void setOnErrorListener(PassRefPtr<EventListener> eventListener) { m_onErrorListener = eventListener; }
  69         EventListener* onErrorListener() const { return m_onErrorListener.get(); }
  70
  71     private:
  72         friend class WorkerThreadScriptLoadTimer;
  73
  74         DedicatedWorker(const String&, Document*, ExceptionCode&);
  75
  76         void startLoad();
  77         virtual void notifyFinished(CachedResource*);
  78
  79         void dispatchErrorEvent();
  80
  81         KURL m_scriptURL;
  82         CachedResourceHandle<CachedScript> m_cachedScript;
  83
  84         RefPtr<EventListener> m_onMessageListener;
  85         RefPtr<EventListener> m_onCloseListener;
  86         RefPtr<EventListener> m_onErrorListener;
  87     };
  88
  89 } // namespace WebCore
  90
  91 #endif // ENABLE(WORKERS)
  92
  93 #endif // DedicatedWorker_h