Source/WebCore/Modules/indexeddb/IDBFactoryBackendImpl.h

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 1.  Redistributions of source code must retain the above copyright
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 * 2.  Redistributions in binary form must reproduce the above copyright
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 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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#ifndef IDBFactoryBackendImpl_h
#define IDBFactoryBackendImpl_h

#include "IDBFactoryBackendInterface.h"
#include "SecurityOrigin.h"
#include <wtf/HashMap.h>
#include <wtf/text/StringHash.h>

#if ENABLE(INDEXED_DATABASE)

namespace WebCore {

class DOMStringList;

class IDBBackingStore;
class IDBDatabaseBackendImpl;

class IDBFactoryBackendImpl : public IDBFactoryBackendInterface {
public:
    static PassRefPtr<IDBFactoryBackendImpl> create()
    {
        return adoptRef(new IDBFactoryBackendImpl());
    }
    virtual ~IDBFactoryBackendImpl();

    // Notifications from weak pointers.
    virtual void removeIDBDatabaseBackend(const String& uniqueIdentifier);
    void addIDBBackingStore(const String& fileIdentifier, IDBBackingStore*);
    virtual void removeIDBBackingStore(const String& fileIdentifier);

    virtual void getDatabaseNames(PassRefPtr<IDBCallbacks>, PassRefPtr<SecurityOrigin>, ScriptExecutionContext*, const String& dataDir);
    virtual void open(const String& name, int64_t version, PassRefPtr<IDBCallbacks>, PassRefPtr<IDBDatabaseCallbacks>, PassRefPtr<SecurityOrigin>, ScriptExecutionContext*, const String& dataDir);
    virtual void deleteDatabase(const String& name, PassRefPtr<IDBCallbacks>, PassRefPtr<SecurityOrigin>, ScriptExecutionContext*, const String& dataDir);

protected:
    IDBFactoryBackendImpl();
    virtual PassRefPtr<IDBBackingStore> openBackingStore(PassRefPtr<SecurityOrigin>, const String& dataDir);

private:
    typedef HashMap<String, RefPtr<IDBDatabaseBackendImpl> > IDBDatabaseBackendMap;
    IDBDatabaseBackendMap m_databaseBackendMap;

    typedef HashMap<String, IDBBackingStore*> IDBBackingStoreMap;
    IDBBackingStoreMap m_backingStoreMap;

    // Only one instance of the factory should exist at any given time.
    static IDBFactoryBackendImpl* idbFactoryBackendImpl;
};

} // namespace WebCore

#endif

#endif // IDBFactoryBackendImpl_h