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      1 /*
      2  * Copyright (C) 2008, 2009 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 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 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 DOMApplicationCache_h
     27 #define DOMApplicationCache_h
     28 
     29 #if ENABLE(OFFLINE_WEB_APPLICATIONS)
     30 
     31 #include "ApplicationCacheHost.h"
     32 #include "EventListener.h"
     33 #include "EventNames.h"
     34 #include "EventTarget.h"
     35 #include <wtf/Forward.h>
     36 #include <wtf/HashMap.h>
     37 #include <wtf/PassRefPtr.h>
     38 #include <wtf/RefCounted.h>
     39 #include <wtf/Vector.h>
     40 #include <wtf/text/AtomicStringHash.h>
     41 
     42 namespace WebCore {
     43 
     44 class Frame;
     45 class KURL;
     46 
     47 class DOMApplicationCache : public RefCounted<DOMApplicationCache>, public EventTarget {
     48 public:
     49     static PassRefPtr<DOMApplicationCache> create(Frame* frame) { return adoptRef(new DOMApplicationCache(frame)); }
     50     ~DOMApplicationCache() { ASSERT(!m_frame); }
     51 
     52     Frame* frame() const { return m_frame; }
     53     void disconnectFrame();
     54 
     55     unsigned short status() const;
     56     void update(ExceptionCode&);
     57     void swapCache(ExceptionCode&);
     58 
     59     // EventTarget impl
     60 
     61     using RefCounted<DOMApplicationCache>::ref;
     62     using RefCounted<DOMApplicationCache>::deref;
     63 
     64     // Explicitly named attribute event listener helpers
     65 
     66     DEFINE_ATTRIBUTE_EVENT_LISTENER(checking);
     67     DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
     68     DEFINE_ATTRIBUTE_EVENT_LISTENER(noupdate);
     69     DEFINE_ATTRIBUTE_EVENT_LISTENER(downloading);
     70     DEFINE_ATTRIBUTE_EVENT_LISTENER(progress);
     71     DEFINE_ATTRIBUTE_EVENT_LISTENER(updateready);
     72     DEFINE_ATTRIBUTE_EVENT_LISTENER(cached);
     73     DEFINE_ATTRIBUTE_EVENT_LISTENER(obsolete);
     74 
     75     virtual ScriptExecutionContext* scriptExecutionContext() const;
     76     DOMApplicationCache* toDOMApplicationCache() { return this; }
     77 
     78     static const AtomicString& toEventType(ApplicationCacheHost::EventID id);
     79 
     80 private:
     81     DOMApplicationCache(Frame*);
     82 
     83     virtual void refEventTarget() { ref(); }
     84     virtual void derefEventTarget() { deref(); }
     85     virtual EventTargetData* eventTargetData();
     86     virtual EventTargetData* ensureEventTargetData();
     87 
     88     ApplicationCacheHost* applicationCacheHost() const;
     89 
     90     Frame* m_frame;
     91     EventTargetData m_eventTargetData;
     92 };
     93 
     94 } // namespace WebCore
     95 
     96 #endif // ENABLE(OFFLINE_WEB_APPLICATIONS)
     97 
     98 #endif // DOMApplicationCache_h
     99