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      1 /*
      2  * Copyright (C) 2009 Google 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 GOOGLE 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 GOOGLE 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 StorageAreaProxy_h
     27 #define StorageAreaProxy_h
     28 
     29 #if ENABLE(DOM_STORAGE)
     30 
     31 #include "StorageArea.h"
     32 
     33 namespace WebKit { class WebStorageArea; }
     34 
     35 namespace WebCore {
     36 
     37 class Frame;
     38 class SecurityOrigin;
     39 
     40 class StorageAreaProxy : public StorageArea {
     41 public:
     42     StorageAreaProxy(WebKit::WebStorageArea*, StorageType);
     43     virtual ~StorageAreaProxy();
     44 
     45     // The HTML5 DOM Storage API
     46     virtual unsigned length() const;
     47     virtual String key(unsigned index) const;
     48     virtual String getItem(const String& key) const;
     49     virtual String setItem(const String& key, const String& value, ExceptionCode& ec, Frame* sourceFrame);
     50     virtual String removeItem(const String& key, Frame* sourceFrame);
     51     virtual bool clear(Frame* sourceFrame);
     52     virtual bool contains(const String& key) const;
     53 
     54 private:
     55     void storageEvent(const String& key, const String& oldValue, const String& newValue, StorageType, SecurityOrigin*, Frame* sourceFrame);
     56 
     57     OwnPtr<WebKit::WebStorageArea> m_storageArea;
     58     StorageType m_storageType;
     59 };
     60 
     61 } // namespace WebCore
     62 
     63 #endif // ENABLE(DOM_STORAGE)
     64 
     65 #endif // StorageAreaProxy_h
     66