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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 StorageAreaImpl_h
#define StorageAreaImpl_h
#include <WebCore/StorageArea.h>
#include <WebCore/Timer.h>
#include <wtf/HashMap.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class SecurityOrigin;
class StorageMap;
class StorageAreaSync;
class StorageAreaImpl : public StorageArea {
public:
static Ref<StorageAreaImpl> create(StorageType, PassRefPtr<SecurityOrigin>, PassRefPtr<StorageSyncManager>, unsigned quota);
virtual ~StorageAreaImpl();
virtual unsigned length() override;
virtual String key(unsigned index) override;
virtual String item(const String& key) override;
virtual void setItem(Frame* sourceFrame, const String& key, const String& value, bool& quotaException) override;
virtual void removeItem(Frame* sourceFrame, const String& key) override;
virtual void clear(Frame* sourceFrame) override;
virtual bool contains(const String& key) override;
virtual bool canAccessStorage(Frame* sourceFrame) override;
virtual StorageType storageType() const override;
virtual size_t memoryBytesUsedByCache() override;
virtual void incrementAccessCount() override;
virtual void decrementAccessCount() override;
virtual void closeDatabaseIfIdle() override;
SecurityOrigin& securityOrigin() override { return *m_securityOrigin; }
PassRefPtr<StorageAreaImpl> copy();
void close();
// Only called from a background thread.
void importItems(const HashMap<String, String>& items);
// Used to clear a StorageArea and close db before backing db file is deleted.
void clearForOriginDeletion();
void sync();
private:
StorageAreaImpl(StorageType, PassRefPtr<SecurityOrigin>, PassRefPtr<StorageSyncManager>, unsigned quota);
explicit StorageAreaImpl(StorageAreaImpl*);
void blockUntilImportComplete() const;
void closeDatabaseTimerFired();
void dispatchStorageEvent(const String& key, const String& oldValue, const String& newValue, Frame* sourceFrame);
StorageType m_storageType;
RefPtr<SecurityOrigin> m_securityOrigin;
RefPtr<StorageMap> m_storageMap;
RefPtr<StorageAreaSync> m_storageAreaSync;
RefPtr<StorageSyncManager> m_storageSyncManager;
#ifndef NDEBUG
bool m_isShutdown;
#endif
unsigned m_accessCount;
Timer m_closeDatabaseTimer;
};
} // namespace WebCore
#endif // StorageAreaImpl_h
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