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#ifndef QWINDOWSOLE_H
#define QWINDOWSOLE_H

#include "qwindowscombase.h"
#include <QtCore/qt_windows.h>

#include <QtCore/qlist.h>
#include <QtCore/qmap.h>
#include <QtCore/qpointer.h>

#include <objidl.h>

QT_BEGIN_NAMESPACE

class QMimeData;
class QWindow;

class QWindowsOleDataObject : public QWindowsComBase<IDataObject>
{
public:
    explicit QWindowsOleDataObject(QMimeData *mimeData);
    ~QWindowsOleDataObject() override;

    void releaseQt();
    QMimeData *mimeData() const;
    DWORD reportedPerformedEffect() const;

    // IDataObject methods
    STDMETHOD(GetData)(LPFORMATETC pformatetcIn, LPSTGMEDIUM pmedium);
    STDMETHOD(GetDataHere)(LPFORMATETC pformatetc, LPSTGMEDIUM pmedium);
    STDMETHOD(QueryGetData)(LPFORMATETC pformatetc);
    STDMETHOD(GetCanonicalFormatEtc)(LPFORMATETC pformatetc, LPFORMATETC pformatetcOut);
    STDMETHOD(SetData)(LPFORMATETC pformatetc, STGMEDIUM FAR * pmedium,
                       BOOL fRelease);
    STDMETHOD(EnumFormatEtc)(DWORD dwDirection, LPENUMFORMATETC FAR* ppenumFormatEtc);
    STDMETHOD(DAdvise)(FORMATETC FAR* pFormatetc, DWORD advf,
                      LPADVISESINK pAdvSink, DWORD FAR* pdwConnection);
    STDMETHOD(DUnadvise)(DWORD dwConnection);
    STDMETHOD(EnumDAdvise)(LPENUMSTATDATA FAR* ppenumAdvise);

private:
    QPointer<QMimeData> data;
    const int CF_PERFORMEDDROPEFFECT;
    DWORD performedEffect = DROPEFFECT_NONE;
};

class QWindowsOleEnumFmtEtc : public QWindowsComBase<IEnumFORMATETC>
{
public:
    explicit QWindowsOleEnumFmtEtc(const QList<FORMATETC> &fmtetcs);
    explicit QWindowsOleEnumFmtEtc(const QList<LPFORMATETC> &lpfmtetcs);
    ~QWindowsOleEnumFmtEtc() override;

    bool isNull() const;

    // IEnumFORMATETC methods
    STDMETHOD(Next)(ULONG celt, LPFORMATETC rgelt, ULONG FAR* pceltFetched);
    STDMETHOD(Skip)(ULONG celt);
    STDMETHOD(Reset)(void);
    STDMETHOD(Clone)(LPENUMFORMATETC FAR* newEnum);

private:
    bool copyFormatEtc(LPFORMATETC dest, const FORMATETC *src) const;

    ULONG m_nIndex = 0;
    QList<LPFORMATETC> m_lpfmtetcs;
    bool m_isNull = false;
};

QT_END_NAMESPACE

#endif // QWINDOWSOLE_H