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/* $Id$ */
/** @file
* VBox Qt GUI - UIDnDDataObject class declaration.
*/
/*
* Copyright (C) 2014-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#ifndef ___UIDnDDataObject_win_h___
#define ___UIDnDDataObject_win_h___
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/critsect.h>
#include <QString>
#include <QStringList>
#include <QVariant>
/* COM includes: */
#include "COMEnums.h"
#include "CDndSource.h"
#include "CSession.h"
/* Forward declarations: */
class UIDnDHandler;
class UIDnDDataObject : public IDataObject
{
public:
enum DnDDataObjectStatus
{
DnDDataObjectStatus_Uninitialized = 0,
DnDDataObjectStatus_Initialized,
DnDDataObjectStatus_Dropping,
DnDDataObjectStatus_Dropped,
DnDDataObjectStatus_Aborted,
DnDDataObjectStatus_32Bit_Hack = 0x7fffffff
};
public:
UIDnDDataObject(UIDnDHandler *pDnDHandler, const QStringList &lstFormats);
virtual ~UIDnDDataObject(void);
public: /* IUnknown methods. */
STDMETHOD(QueryInterface)(REFIID iid, void ** ppvObject);
STDMETHOD_(ULONG, AddRef)(void);
STDMETHOD_(ULONG, Release)(void);
public: /* IDataObject methods. */
STDMETHOD(GetData)(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium);
STDMETHOD(GetDataHere)(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium);
STDMETHOD(QueryGetData)(LPFORMATETC pFormatEtc);
STDMETHOD(GetCanonicalFormatEtc)(LPFORMATETC pFormatEtc, LPFORMATETC pFormatEtcOut);
STDMETHOD(SetData)(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium, BOOL fRelease);
STDMETHOD(EnumFormatEtc)(DWORD dwDirection, IEnumFORMATETC **ppEnumFormatEtc);
STDMETHOD(DAdvise)(LPFORMATETC pFormatEtc, DWORD fAdvise, IAdviseSink *pAdvSink, DWORD *pdwConnection);
STDMETHOD(DUnadvise)(DWORD dwConnection);
STDMETHOD(EnumDAdvise)(IEnumSTATDATA **ppEnumAdvise);
public:
static const char *ClipboardFormatToString(CLIPFORMAT fmt);
int Abort(void);
void Signal(void);
int Signal(const QString &strFormat, const void *pvData, uint32_t cbData);
protected:
void SetStatus(DnDDataObjectStatus enmStatus);
bool LookupFormatEtc(LPFORMATETC pFormatEtc, ULONG *puIndex);
void RegisterFormat(LPFORMATETC pFormatEtc, CLIPFORMAT clipFormat, TYMED tyMed = TYMED_HGLOBAL,
LONG lindex = -1, DWORD dwAspect = DVASPECT_CONTENT, DVTARGETDEVICE *pTargetDevice = NULL);
/** Pointe rto drag and drop handler. */
UIDnDHandler *m_pDnDHandler;
/** Current drag and drop status. */
DnDDataObjectStatus m_enmStatus;
/** Internal reference count of this object. */
LONG m_cRefs;
/** Number of native formats registered. This can be a different number than supplied with mlstFormats. */
ULONG m_cFormats;
FORMATETC *m_pFormatEtc;
STGMEDIUM *m_pStgMedium;
RTSEMEVENT m_SemEvent;
QStringList m_lstFormats;
QString m_strFormat;
/** The retrieved data as a QVariant. Needed for buffering in case a second format needs the same data,
* e.g. CF_TEXT and CF_UNICODETEXT. */
QVariant m_vaData;
/** Whether the data already was retrieved or not. */
bool m_fDataRetrieved;
/** The retrieved data as a raw buffer. */
void *m_pvData;
/** Raw buffer size (in bytes). */
uint32_t m_cbData;
};
#endif /* !___UIDnDDataObject_win_h___ */
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