StorageNamespaceImpl.h   [plain text]

/*
 * 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 StorageNamespaceImpl_h
#define StorageNamespaceImpl_h

#include "PlatformString.h"
#include "SecurityOriginHash.h"
#include "StorageArea.h"
#include "StorageNamespace.h"

#include <wtf/HashMap.h>
#include <wtf/RefPtr.h>

namespace WebCore {

    class StorageAreaImpl;

    class StorageNamespaceImpl : public StorageNamespace {
    public:
        static PassRefPtr<StorageNamespace> localStorageNamespace(const String& path, unsigned quota);
        static PassRefPtr<StorageNamespace> sessionStorageNamespace(unsigned quota);

        virtual ~StorageNamespaceImpl();
        virtual PassRefPtr<StorageArea> storageArea(PassRefPtr<SecurityOrigin>);
        virtual PassRefPtr<StorageNamespace> copy();
        virtual void close();

        // Not removing the origin's StorageArea from m_storageAreaMap because
        // we're just deleting the underlying db file. If an item is added immediately
        // after file deletion, we want the same StorageArea to eventually trigger
        // a sync and for StorageAreaSync to recreate the backing db file.
        virtual void clearOriginForDeletion(SecurityOrigin*);
        virtual void clearAllOriginsForDeletion();
        virtual void sync();
        
    private:
        StorageNamespaceImpl(StorageType, const String& path, unsigned quota);

        typedef HashMap<RefPtr<SecurityOrigin>, RefPtr<StorageAreaImpl>, SecurityOriginHash> StorageAreaMap;
        StorageAreaMap m_storageAreaMap;

        StorageType m_storageType;

        // Only used if m_storageType == LocalStorage and the path was not "" in our constructor.
        String m_path;
        RefPtr<StorageSyncManager> m_syncManager;

        unsigned m_quota;  // The default quota for each new storage area.
        bool m_isShutdown;
    };

} // namespace WebCore

#endif // StorageNamespaceImpl_h