Source/modules/filesystem/FileWriterSync.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,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef FileWriterSync_h
#define FileWriterSync_h

#include "AsyncFileWriterClient.h"
#include "FileError.h"
#include "FileWriterBase.h"
#include <wtf/PassRefPtr.h>

namespace WebCore {

class Blob;

typedef int ExceptionCode;

class FileWriterSync : public FileWriterBase, public AsyncFileWriterClient {
public:
    static PassRefPtr<FileWriterSync> create()
    {
        return adoptRef(new FileWriterSync());
    }
    virtual ~FileWriterSync();

    // FileWriterBase
    void write(Blob*, ExceptionCode&);
    void seek(long long position, ExceptionCode&);
    void truncate(long long length, ExceptionCode&);

    // AsyncFileWriterClient, via FileWriterBase
    void didWrite(long long bytes, bool complete);
    void didTruncate();
    void didFail(FileError::ErrorCode);

private:
    FileWriterSync();
    void prepareForWrite();

    FileError::ErrorCode m_error;
#ifndef NDEBUG
    bool m_complete;
#endif
};

} // namespace WebCore

#endif // FileWriter_h