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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
// * Copyright (C) 2008-2010 ZenJu (zhnmju123 AT gmx.de)                    *
// **************************************************************************
//
#ifndef SHADOW_H_INCLUDED
#define SHADOW_H_INCLUDED

#ifndef FFS_WIN
use in windows build only!
#endif

#include "zstring.h"
#include "file_error.h"
#include <memory>


namespace shadow
{
struct WaitingForShadow
{
    virtual ~WaitingForShadow() {}
    virtual void requestUiRefresh() = 0;  //allowed to throw exceptions
    virtual void updateStatusText(const Zstring& text) = 0;
};


class ShadowCopy //buffer access to Windows Volume Shadow Copy Service
{
public:
    ShadowCopy(WaitingForShadow* callback);
    ~ShadowCopy();

    Zstring makeShadowCopy(const Zstring& inputFile); //throw(FileError); returns filename on shadow copy

private:
    ShadowCopy(const ShadowCopy&);
    ShadowCopy& operator=(const ShadowCopy&);

    WaitingForShadow* callback_;

    class ShadowVolume;
    std::auto_ptr<ShadowVolume> shadowVol;
};
}

#endif // SHADOW_H_INCLUDED
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