xref: /external/webkit/Source/WebCore/fileapi/AsyncFileWriter.h

/*
 * 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 * OWNER 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,
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 */

#ifndef AsyncFileWriter_h
#define AsyncFileWriter_h

#if ENABLE(FILE_SYSTEM)

#include "PlatformString.h"
#include <wtf/RefCounted.h>

namespace WebCore {

class Blob;

class AsyncFileWriter {
public:
    virtual ~AsyncFileWriter() {}

    virtual void write(long long position, Blob* data) = 0;
    virtual void truncate(long long length) = 0;
    virtual void abort() = 0;
    virtual bool waitForOperationToComplete() // Needed for FileWriterSync only.
    {
        return false;
    }
};

} // namespace

#endif // ENABLE(FILE_SYSTEM)

#endif // AsyncFileWriter_h