/*
 * Copyright (C) 2010 Google 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.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 */
#ifndef IDBFactoryBackendInterface_h
#define IDBFactoryBackendInterface_h

#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/text/WTFString.h"

namespace WebCore {

class IDBCallbacks;
class IDBDatabase;
class IDBDatabaseCallbacks;
class ExecutionContext;

// This class is shared by IDBFactory (async) and IDBFactorySync (sync).
// This is implemented by IDBFactoryBackendImpl and optionally others (in order to proxy
// calls across process barriers). All calls to these classes should be non-blocking and
// trigger work on a background thread if necessary.
class IDBFactoryBackendInterface : public RefCounted<IDBFactoryBackendInterface> {
public:
    static PassRefPtr<IDBFactoryBackendInterface> create();
    virtual ~IDBFactoryBackendInterface() { }

    virtual void getDatabaseNames(PassRefPtr<IDBCallbacks>, const String& databaseIdentifier, ExecutionContext*) = 0;
    virtual void open(const String& name, int64_t version, int64_t transactionId, PassRefPtr<IDBCallbacks>, PassRefPtr<IDBDatabaseCallbacks>, const String& databaseIdentifier, ExecutionContext*) = 0;
    virtual void deleteDatabase(const String& name, PassRefPtr<IDBCallbacks>, const String& databaseIdentifier, ExecutionContext*) = 0;
};

} // namespace WebCore

#endif // IDBFactoryBackendInterface_h