#ifndef _DESKHTML_H_
#define _DESKHTML_H_

#include <cowsite.h>

class CDeskHtmlProp     : public CObjectCLSID
                        , public IObjectWithSite
                        , public IShellExtInit
                        , public IBasePropPage
                        , public IPropertyBag
{
    // *** IUnknown ***
    virtual STDMETHODIMP QueryInterface(REFIID riid, LPVOID *ppvObj);
    virtual STDMETHODIMP_(ULONG) AddRef(void);
    virtual STDMETHODIMP_(ULONG) Release(void);

    // *** IObjectWithSite ***
    virtual STDMETHODIMP SetSite(IN IUnknown * punkSite);
    virtual STDMETHODIMP GetSite(IN REFIID riid, OUT void ** ppvSite);

    // *** IShellExtInit ***
    virtual STDMETHODIMP Initialize(IN LPCITEMIDLIST pidlFolder, IN LPDATAOBJECT lpdobj, IN HKEY hkeyProgID);

    // *** IShellPropSheetExt ***
    virtual STDMETHODIMP AddPages(IN LPFNADDPROPSHEETPAGE lpfnAddPage, IN LPARAM lParam);
    virtual STDMETHODIMP ReplacePage(IN UINT uPageID, IN LPFNADDPROPSHEETPAGE lpfnReplaceWith, IN LPARAM lParam);

    // *** IPropertyBag ***
    virtual STDMETHODIMP Read(IN LPCOLESTR pszPropName, IN VARIANT * pVar, IN IErrorLog *pErrorLog);
    virtual STDMETHODIMP Write(IN LPCOLESTR pszPropName, IN VARIANT *pVar);

    // *** IBasePropPage ***
    virtual STDMETHODIMP GetAdvancedDialog(OUT IAdvancedDialog ** ppAdvDialog);
    virtual STDMETHODIMP OnApply(IN PROPPAGEONAPPLY oaAction);

protected:
    // Constructor / Destructor
    CDeskHtmlProp();
    ~CDeskHtmlProp();

    // Instance creator
    friend HRESULT CDeskHtmlProp_CreateInstance(LPUNKNOWN punkOuter, REFIID riid, void **ppvOut);

private:
    // Private member variables
    UINT         _cRef;                     // Reference count
    IShellPropSheetExt * _pspseBkgdPage;    // The Background Page


    // Private member functions
    HRESULT _InitBackgroundTab(void);
};

#endif