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/*
* Copyright (C) 2008 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef StorageArea_h
#define StorageArea_h
#include <wtf/Forward.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class Frame;
class StorageSyncManager;
typedef int ExceptionCode;
enum StorageType { LocalStorage, SessionStorage };
class StorageArea : public RefCounted<StorageArea> {
public:
virtual ~StorageArea() { }
virtual unsigned length() = 0;
virtual String key(unsigned index) = 0;
virtual String item(const String& key) = 0;
virtual void setItem(Frame* sourceFrame, const String& key, const String& value, bool& quotaException) = 0;
virtual void removeItem(Frame* sourceFrame, const String& key) = 0;
virtual void clear(Frame* sourceFrame) = 0;
virtual bool contains(const String& key) = 0;
virtual bool canAccessStorage(Frame*) = 0;
virtual StorageType storageType() const = 0;
virtual size_t memoryBytesUsedByCache() = 0;
virtual void incrementAccessCount() { }
virtual void decrementAccessCount() { }
virtual void closeDatabaseIfIdle() { }
};
} // namespace WebCore
#endif // StorageArea_h
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