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/**
 * @file lltransfertargetvfile.h
 * @brief Transfer system for receiving a vfile.
 *
 * $LicenseInfo:firstyear=2006&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLTRANSFERTARGETVFILE_H
#define LL_LLTRANSFERTARGETVFILE_H

#include "lltransfermanager.h"
#include "llassetstorage.h"
#include "llfilesystem.h"

class LLFileSystem;

// Lame, an S32 for now until I figure out the deal with how we want to do
// error codes.
typedef void (*LLTTVFCompleteCallback)(
    S32 status,
    const LLUUID& file_id,
    LLAssetType::EType file_type,
    LLBaseDownloadRequest* user_data, LLExtStat ext_status );

class LLTransferTargetParamsVFile : public LLTransferTargetParams
{
public:
    LLTransferTargetParamsVFile();

    void setAsset(const LLUUID& asset_id, LLAssetType::EType asset_type);
    void setCallback(LLTTVFCompleteCallback cb, LLBaseDownloadRequest& request);

    LLUUID getAssetID() const                       { return mAssetID; }
    LLAssetType::EType getAssetType() const         { return mAssetType; }

    friend class LLTransferTargetVFile;
protected:
    bool unpackParams(LLDataPacker& dp);

    LLUUID              mAssetID;
    LLAssetType::EType  mAssetType;

    LLTTVFCompleteCallback  mCompleteCallback;
    LLBaseDownloadRequest*  mRequestDatap;
    S32                     mErrCode;
};


class LLTransferTargetVFile : public LLTransferTarget
{
public:
    LLTransferTargetVFile(const LLUUID& uuid, LLTransferSourceType src_type);
    virtual ~LLTransferTargetVFile();

    //static void requestTransfer(LLTransferTargetChannel* channelp,
    //                          const char* local_filename,
    //                          const LLTransferSourceParams& source_params,
    //                          LLTTVFCompleteCallback callback);

    static void updateQueue(bool shutdown = false);

protected:
    virtual bool unpackParams(LLDataPacker& dp);
    /*virtual*/ void applyParams(const LLTransferTargetParams& params);
    /*virtual*/ LLTSCode dataCallback(const S32 packet_id, U8* in_datap, const S32 in_size);
    /*virtual*/ void completionCallback(const LLTSCode status);

    LLTransferTargetParamsVFile mParams;

    BOOL mNeedsCreate;
    LLUUID mTempID;
};

#endif // LL_LLTRANSFERTARGETFILE_H