CFolderOptions.h

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/*
 * Folder options.
 *
 * Copyright (C) 2016 Mark Jansen
 *
 * 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; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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 St, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#ifndef _CFOLDEROPTIONS_H_
#define _CFOLDEROPTIONS_H_
 
class CFolderOptions :
    public CComCoClass<CFolderOptions, &CLSID_ShellFldSetExt>,
    public CComObjectRootEx<CComMultiThreadModelNoCS>,
    public IShellPropSheetExt,
    public IShellExtInit,
    public IObjectWithSite
{
    private:
        CComPtr<IUnknown> m_pSite;
        //LPITEMIDLIST pidl;
        //INT iIdEmpty;
        //UINT cfShellIDList;
        //void SF_RegisterClipFmt();
        //BOOL fAcceptFmt;       /* flag for pending Drop */
        //BOOL QueryDrop (DWORD dwKeyState, LPDWORD pdwEffect);
        //BOOL RecycleBinIsEmpty();
 
    protected:
        enum DEFFOLDERSETTINGACTION { DFSA_QUERY = -1, DFSA_RESET, DFSA_APPLY };
        HRESULT HandleDefFolderSettings(int Action);
 
    public:
        CFolderOptions();
        ~CFolderOptions();
 
        // IShellPropSheetExt
        STDMETHOD(AddPages)(LPFNSVADDPROPSHEETPAGE pfnAddPage, LPARAM lParam) override;
        STDMETHOD(ReplacePage)(EXPPS uPageID, LPFNSVADDPROPSHEETPAGE pfnReplaceWith, LPARAM lParam) override;
 
        // IShellExtInit
        STDMETHOD(Initialize)(PCIDLIST_ABSOLUTE pidlFolder, IDataObject *pdtobj, HKEY hkeyProgID) override;
 
        // IObjectWithSite
        STDMETHOD(SetSite)(IUnknown *pUnkSite) override;
        STDMETHOD(GetSite)(REFIID riid, void **ppvSite) override;
 
        bool CanSetDefFolderSettings()
        {
            return SUCCEEDED(HandleDefFolderSettings(DFSA_QUERY));
        }
        HRESULT ApplyDefFolderSettings(bool ResetToDefault)
        {
            return HandleDefFolderSettings(ResetToDefault ? DFSA_RESET : DFSA_APPLY);
        }
 
        DECLARE_REGISTRY_RESOURCEID(IDR_FOLDEROPTIONS)
        DECLARE_NOT_AGGREGATABLE(CFolderOptions)
 
        DECLARE_PROTECT_FINAL_CONSTRUCT()
 
        BEGIN_COM_MAP(CFolderOptions)
        COM_INTERFACE_ENTRY_IID(IID_IShellPropSheetExt, IShellPropSheetExt)
        COM_INTERFACE_ENTRY_IID(IID_IShellExtInit, IShellExtInit)
        COM_INTERFACE_ENTRY_IID(IID_IObjectWithSite, IObjectWithSite)
        END_COM_MAP()
};
 
#endif /* _CFOLDEROPTIONS_H_ */