//
// Microsoft Corporation 1998
//
// DATAOBJ.H - IGPTDataobject
//

// {70f05689-5af0-41e6-a292-396697f04fce}
DEFINE_GUID(IID_IGPTDataObject,
0x70f05689, 0x5af0, 0x41e6, 0xa2, 0x92, 0x39, 0x66, 0x97, 0xf0, 0x4f, 0xce);

#ifndef _DATAOBJ_H_
#define _DATAOBJ_H_

//
// This is a private dataobject interface for GPTs.
// When the GPT snapin receives a dataobject and needs to determine
// if it came from the GPT snapin or a different component, it can QI for
// this interface.
//

#undef INTERFACE
#define INTERFACE   IGPTDataObject
DECLARE_INTERFACE_(IGPTDataObject, IUnknown)
{
    // *** IUnknown methods ***
    STDMETHOD(QueryInterface) (THIS_ REFIID riid, LPVOID * ppvObj) PURE;
    STDMETHOD_(ULONG,AddRef) (THIS)  PURE;
    STDMETHOD_(ULONG,Release) (THIS) PURE;


    // *** IGPTDataObject methods ***

    STDMETHOD(SetType) (THIS_ DATA_OBJECT_TYPES type) PURE;
    STDMETHOD(GetType) (THIS_ DATA_OBJECT_TYPES *type) PURE;

    STDMETHOD(SetCookie) (THIS_ MMC_COOKIE cookie) PURE;
    STDMETHOD(GetCookie) (THIS_ MMC_COOKIE *cookie) PURE;
};
typedef IGPTDataObject *LPGPTDATAOBJECT;

// CDataObject class
class CDataObject : public IDataObject,
                    public IGPTDataObject
{
    friend class CSnapIn;

protected:
    ULONG                  m_cRef;
    CComponentData        *m_pcd;
    DATA_OBJECT_TYPES      m_type;
    MMC_COOKIE             m_cookie;

    // Clipboard formats that are required by the console
    static unsigned int    m_cfNodeType;
    static unsigned int    m_cfNodeTypeString;
    static unsigned int    m_cfDisplayName;
    static unsigned int    m_cfCoClass;

public:
    CDataObject(CComponentData *pComponent);
    ~CDataObject();


    // IUnknown methods
    STDMETHODIMP         QueryInterface(REFIID, LPVOID FAR *);
    STDMETHODIMP_(ULONG) AddRef();
    STDMETHODIMP_(ULONG) Release();


    // Implemented IDataObject methods
    STDMETHOD(GetDataHere)(LPFORMATETC lpFormatetc, LPSTGMEDIUM lpMedium);


    // Unimplemented IDataObject methods
    STDMETHOD(GetData)(LPFORMATETC lpFormatetcIn, LPSTGMEDIUM lpMedium)
    { return E_NOTIMPL; };

    STDMETHOD(EnumFormatEtc)(DWORD dwDirection, LPENUMFORMATETC* ppEnumFormatEtc)
    { return E_NOTIMPL; };

    STDMETHOD(QueryGetData)(LPFORMATETC lpFormatetc)
    { return E_NOTIMPL; };

    STDMETHOD(GetCanonicalFormatEtc)(LPFORMATETC lpFormatetcIn, LPFORMATETC lpFormatetcOut)
    { return E_NOTIMPL; };

    STDMETHOD(SetData)(LPFORMATETC lpFormatetc, LPSTGMEDIUM lpMedium, BOOL bRelease)
    { return E_NOTIMPL; };

    STDMETHOD(DAdvise)(LPFORMATETC lpFormatetc, DWORD advf,
                LPADVISESINK pAdvSink, LPDWORD pdwConnection)
    { return E_NOTIMPL; };

    STDMETHOD(DUnadvise)(DWORD dwConnection)
    { return E_NOTIMPL; };

    STDMETHOD(EnumDAdvise)(LPENUMSTATDATA* ppEnumAdvise)
    { return E_NOTIMPL; };


    // Implemented IGPTDataObject methods
    STDMETHOD(SetType) (DATA_OBJECT_TYPES type)
    { m_type = type; return S_OK; };

    STDMETHOD(GetType) (DATA_OBJECT_TYPES *type)
    { *type = m_type; return S_OK; };

    STDMETHOD(SetCookie) (MMC_COOKIE cookie)
    { m_cookie = cookie; return S_OK; };

    STDMETHOD(GetCookie) (MMC_COOKIE *cookie)
    { *cookie = m_cookie; return S_OK; };


private:
    HRESULT CreateNodeTypeData(LPSTGMEDIUM lpMedium);
    HRESULT CreateNodeTypeStringData(LPSTGMEDIUM lpMedium);
    HRESULT CreateDisplayName(LPSTGMEDIUM lpMedium);
    HRESULT CreateCoClassID(LPSTGMEDIUM lpMedium);

    HRESULT Create(LPVOID pBuffer, INT len, LPSTGMEDIUM lpMedium);
};

#endif // _DATAOBJ_H