entries.h

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/*
 * Copyright 2003, 2004 Martin Fuchs
 *
 * 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 Street, Fifth Floor, Boston, MA  02110-1301  USA
 */


 //
 // Explorer clone
 //
 // entries.h
 //
 // Martin Fuchs, 23.07.2003
 //


enum ENTRY_TYPE {
    ET_UNKNOWN,
#ifndef _NO_WIN_FS
    ET_WINDOWS,
#endif
#ifdef __WINE__
    ET_UNIX,
#endif
    ET_SHELL,
    ET_NTOBJS,
    ET_REGISTRY,
    ET_FAT,
    ET_WEB
};

enum SORT_ORDER {
    SORT_NONE,
    SORT_NAME,
    SORT_EXT,
    SORT_SIZE,
    SORT_DATE
};

enum SCAN_FLAGS {
    SCAN_DONT_EXTRACT_ICONS = 1,
    SCAN_DONT_ACCESS        = 2,
    SCAN_NO_FILESYSTEM      = 4
};

#ifndef ATTRIBUTE_SYMBOLIC_LINK
#define ATTRIBUTE_LONGNAME          0x08000000
#define ATTRIBUTE_VOLNAME           0x10000000
#define ATTRIBUTE_ERASED            0x20000000
#define ATTRIBUTE_SYMBOLIC_LINK     0x40000000
#define ATTRIBUTE_EXECUTABLE        0x80000000
#endif

enum ICONCACHE_FLAGS {
    ICF_NORMAL   =  0,
    ICF_MIDDLE   =  1,
    ICF_LARGE    =  2,
    ICF_OPEN     =  4,
    ICF_OVERLAYS =  8,
    ICF_HICON    = 16,
    ICF_SYSCACHE = 32
};

#ifndef SHGFI_ADDOVERLAYS // missing in MinGW (as of 28.12.2005)
#define SHGFI_ADDOVERLAYS 0x000000020
#endif


struct Entry
{
protected:
    Entry(ENTRY_TYPE etype);
    Entry(Entry* parent, ENTRY_TYPE etype);
    Entry(const Entry&);

public:
    virtual ~Entry();

    Entry*      _next;
    Entry*      _down;
    Entry*      _up;

    bool        _expanded;
    bool        _scanned;
    int         _level;

    WIN32_FIND_DATA _data;

    SFGAOF      _shell_attribs;
    LPTSTR      _display_name;
    LPTSTR      _type_name;
    LPTSTR      _content;

    ENTRY_TYPE  _etype;
    int /*ICON_ID*/ _icon_id;

    BY_HANDLE_FILE_INFORMATION _bhfi;
    bool        _bhfi_valid;

    void    free_subentries();

    void    read_directory_base(SORT_ORDER sortOrder=SORT_NAME, int scan_flags=0);
    Entry*  read_tree(const void* path, SORT_ORDER sortOrder=SORT_NAME, int scan_flags=0);
    void    sort_directory(SORT_ORDER sortOrder);
    void    smart_scan(SORT_ORDER sortOrder=SORT_NAME, int scan_flags=0);
    int     extract_icon(ICONCACHE_FLAGS flags=ICF_NORMAL);
    int     safe_extract_icon(ICONCACHE_FLAGS flags=ICF_NORMAL);

    virtual void        read_directory(int scan_flags=0) {}
    virtual const void* get_next_path_component(const void*) const {return NULL;}
    virtual Entry*      find_entry(const void*) {return NULL;}
    virtual bool        get_path(PTSTR path, size_t path_count) const = 0;
    virtual ShellPath   create_absolute_pidl() const {return (LPCITEMIDLIST)NULL;}
    virtual HRESULT     GetUIObjectOf(HWND hWnd, REFIID riid, LPVOID* ppvOut);
    virtual ShellFolder get_shell_folder() const;
    virtual BOOL        launch_entry(HWND hwnd, UINT nCmdShow=SW_SHOWNORMAL);
    virtual HRESULT     do_context_menu(HWND hwnd, const POINT& pos, CtxMenuInterfaces& cm_ifs);

protected:
    bool    get_path_base(PTSTR path, size_t path_count, ENTRY_TYPE etype) const;
};


struct Directory {
protected:
    Directory() : _path(NULL) {}
    virtual ~Directory() {}

    void*   _path;
};


struct Root {
    Root();
    ~Root();

    Entry*  _entry;
    TCHAR   _path[MAX_PATH];
    TCHAR   _volname[_MAX_FNAME];
    TCHAR   _fs[_MAX_DIR];
    DWORD   _drive_type;
    DWORD   _fs_flags;
    SORT_ORDER _sort_order;

    Entry*  read_tree(LPCTSTR path, int scan_flags=0);
    Entry*  read_tree(LPCITEMIDLIST pidl, int scan_flags=0);
};