explorer.cpp

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/*
 * Copyright 2003, 2004, 2005, 2006 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
 //
 // explorer.cpp
 //
 // Martin Fuchs, 23.07.2003
 //
 // Credits: Thanks to Leon Finker for his explorer cabinet window example
 //


#include <precomp.h>    // <precomp.h> instead of "precomp.h" because the ROS build system needs this to find the precompiled header file (*.gch) in the output directory tree

#include <shlwapi.h>
#include <locale.h>    // for setlocale()

#ifndef __WINE__
#include <io.h>        // for dup2()
#include <fcntl.h>    // for _O_RDONLY
#endif

//#include "dialogs/settings.h"    // for MdiSdiDlg

#include "services/shellservices.h"


extern "C" int initialize_gdb_stub();    // start up GDB stub


DynamicLoadLibFct<void(__stdcall*)(BOOL)> g_SHDOCVW_ShellDDEInit(TEXT("SHDOCVW"), 118);


ExplorerGlobals g_Globals;
boolean SelectOpt=FALSE;


ExplorerGlobals::ExplorerGlobals()
{
    _hInstance = 0;
    _cfStrFName = 0;

#ifndef ROSSHELL
    _hframeClass = 0;
    _hMainWnd = 0;
    _desktop_mode = false;
    _prescan_nodes = false;
#endif

    _log = NULL;
    _SHRestricted = 0;
    _hwndDesktopBar = 0;
    _hwndShellView = 0;
    _hwndDesktop = 0;
}


void ExplorerGlobals::init(HINSTANCE hInstance)
{
    _hInstance = hInstance;
    _SHRestricted = (DWORD(STDAPICALLTYPE*)(RESTRICTIONS)) GetProcAddress(GetModuleHandle(TEXT("SHELL32")), "SHRestricted");
    _icon_cache.init();
}


void ExplorerGlobals::read_persistent()
{
    // read configuration file
    _cfg_dir.printf(TEXT("%s\\ReactOS"), (LPCTSTR)SpecialFolderFSPath(CSIDL_APPDATA,0));
    _cfg_path.printf(TEXT("%s\\ros-explorer-cfg.xml"), _cfg_dir.c_str());

    if (!_cfg.read_file(_cfg_path)) {
        if (!_cfg._errors.empty()) {
            MessageBox(_hwndDesktop,
                       _cfg._errors.str(),
                       TEXT("ROS Explorer - reading user settings"),
                       MB_OK);
        }
        _cfg.read_file(TEXT("explorer-cfg-template.xml"));
    }

     // read bookmarks
    _favorites_path.printf(TEXT("%s\\ros-explorer-bookmarks.xml"), _cfg_dir.c_str());

    if (!_favorites.read(_favorites_path)) {
        _favorites.import_IE_favorites(0);
        _favorites.write(_favorites_path);
    }
}

void ExplorerGlobals::write_persistent()
{
     // write configuration file
    RecursiveCreateDirectory(_cfg_dir);

    _cfg.write_file(_cfg_path);
    _favorites.write(_favorites_path);
}


XMLPos ExplorerGlobals::get_cfg()
{
    XMLPos cfg_pos(&_cfg);

    cfg_pos.smart_create("explorer-cfg");

    return cfg_pos;
}

XMLPos ExplorerGlobals::get_cfg(const char* path)
{
    XMLPos cfg_pos(&_cfg);

    cfg_pos.smart_create("explorer-cfg");
    cfg_pos.create_relative(path);

    return cfg_pos;
}


void _log_(LPCTSTR txt)
{
    FmtString msg(TEXT("%s\n"), txt);

    if (g_Globals._log)
        _fputts(msg, g_Globals._log);

    OutputDebugString(msg);
}


bool FileTypeManager::is_exe_file(LPCTSTR ext)
{
    static const LPCTSTR s_executable_extensions[] = {
        TEXT("COM"),
        TEXT("EXE"),
        TEXT("BAT"),
        TEXT("CMD"),
        TEXT("CMM"),
        TEXT("BTM"),
        TEXT("AWK"),
        0
    };

    TCHAR ext_buffer[_MAX_EXT];
    const LPCTSTR* p;
    LPCTSTR s;
    LPTSTR d;

    for(s=ext+1,d=ext_buffer; (*d=toupper(*s)); s++)
        ++d;

    for(p=s_executable_extensions; *p; p++)
        if (!lstrcmp(ext_buffer, *p))
            return true;

    return false;
}


const FileTypeInfo& FileTypeManager::operator[](String ext)
{
    ext.toLower();

    iterator found = find(ext);
    if (found != end())
        return found->second;

    FileTypeInfo& ftype = super::operator[](ext);

    ftype._neverShowExt = false;

    HKEY hkey;
    TCHAR value[MAX_PATH], display_name[MAX_PATH];
    LONG valuelen = sizeof(value);

    if (!RegQueryValue(HKEY_CLASSES_ROOT, ext, value, &valuelen)) {
        ftype._classname = value;

        valuelen = sizeof(display_name);
        if (!RegQueryValue(HKEY_CLASSES_ROOT, ftype._classname, display_name, &valuelen))
            ftype._displayname = display_name;

        if (!RegOpenKey(HKEY_CLASSES_ROOT, ftype._classname, &hkey)) {
            if (!RegQueryValueEx(hkey, TEXT("NeverShowExt"), 0, NULL, NULL, NULL))
                ftype._neverShowExt = true;

            RegCloseKey(hkey);
        }
    }

    return ftype;
}

LPCTSTR FileTypeManager::set_type(Entry* entry, bool dont_hide_ext)
{
    LPCTSTR ext = _tcsrchr(entry->_data.cFileName, TEXT('.'));

    if (ext) {
        const FileTypeInfo& type = (*this)[ext];

        if (!type._displayname.empty())
            entry->_type_name = _tcsdup(type._displayname);

         // hide some file extensions
        if (type._neverShowExt && !dont_hide_ext) {
            int len = ext - entry->_data.cFileName;

            if (entry->_display_name != entry->_data.cFileName)
                free(entry->_display_name);

            entry->_display_name = (LPTSTR) malloc((len+1)*sizeof(TCHAR));
            lstrcpyn(entry->_display_name, entry->_data.cFileName, len + 1);
        }

        if (is_exe_file(ext))
            entry->_data.dwFileAttributes |= ATTRIBUTE_EXECUTABLE;
    }

    return ext;
}


Icon::Icon()
 : _id(ICID_UNKNOWN),
    _itype(IT_STATIC),
    _hicon(0)
{
}

Icon::Icon(ICON_ID id, UINT nid)    //, int cx, int cy
 :    _id(id),
    _itype(IT_STATIC),
    _hicon(ResIcon(nid))    // ResIconEx(nid, cx, cy)
{
}

Icon::Icon(ICON_ID id, UINT nid, int icon_size)
 :    _id(id),
    _itype(IT_STATIC),
    _hicon(ResIconEx(nid, icon_size, icon_size))
{
}

Icon::Icon(ICON_TYPE itype, int id, HICON hIcon)
 :    _id((ICON_ID)id),
    _itype(itype),
    _hicon(hIcon)
{
}

Icon::Icon(ICON_TYPE itype, int id, int sys_idx)
 :    _id((ICON_ID)id),
    _itype(itype),
    _sys_idx(sys_idx)
{
}

void Icon::draw(HDC hdc, int x, int y, int cx, int cy, COLORREF bk_color, HBRUSH bk_brush) const
{
    if (_itype == IT_SYSCACHE)
        ImageList_DrawEx(g_Globals._icon_cache.get_sys_imagelist(), _sys_idx, hdc, x, y, cx, cy, bk_color, CLR_DEFAULT, ILD_NORMAL);
    else
        DrawIconEx(hdc, x, y, _hicon, cx, cy, 0, bk_brush, DI_NORMAL);
}

HBITMAP    Icon::create_bitmap(COLORREF bk_color, HBRUSH hbrBkgnd, HDC hdc_wnd) const
{
    if (_itype == IT_SYSCACHE) {
        HIMAGELIST himl = g_Globals._icon_cache.get_sys_imagelist();

        int cx, cy;
        ImageList_GetIconSize(himl, &cx, &cy);

        HBITMAP hbmp = CreateCompatibleBitmap(hdc_wnd, cx, cy);
        HDC hdc = CreateCompatibleDC(hdc_wnd);
        HBITMAP hbmp_old = SelectBitmap(hdc, hbmp);
        ImageList_DrawEx(himl, _sys_idx, hdc, 0, 0, cx, cy, bk_color, CLR_DEFAULT, ILD_NORMAL);
        SelectBitmap(hdc, hbmp_old);
        DeleteDC(hdc);

        return hbmp;
    } else
        return create_bitmap_from_icon(_hicon, hbrBkgnd, hdc_wnd);
}


int Icon::add_to_imagelist(HIMAGELIST himl, HDC hdc_wnd, COLORREF bk_color, HBRUSH bk_brush) const
{
    int ret;

    if (_itype == IT_SYSCACHE) {
        HIMAGELIST himl = g_Globals._icon_cache.get_sys_imagelist();

        int cx, cy;
        ImageList_GetIconSize(himl, &cx, &cy);

        HBITMAP hbmp = CreateCompatibleBitmap(hdc_wnd, cx, cy);
        HDC hdc = CreateCompatibleDC(hdc_wnd);
        HBITMAP hbmp_old = SelectBitmap(hdc, hbmp);
        ImageList_DrawEx(himl, _sys_idx, hdc, 0, 0, cx, cy, bk_color, CLR_DEFAULT, ILD_NORMAL);
        SelectBitmap(hdc, hbmp_old);
        DeleteDC(hdc);

        ret = ImageList_Add(himl, hbmp, 0);

        DeleteObject(hbmp);
    } else
        ret = ImageList_AddAlphaIcon(himl, _hicon, bk_brush, hdc_wnd);

    return ret;
}

HBITMAP create_bitmap_from_icon(HICON hIcon, HBRUSH hbrush_bkgnd, HDC hdc_wnd/*, int icon_size*/)
{
    int cx = ICON_SIZE_SMALL;
    int cy = ICON_SIZE_SMALL;
    HBITMAP hbmp = CreateCompatibleBitmap(hdc_wnd, cx, cy);

    MemCanvas canvas;
    BitmapSelection sel(canvas, hbmp);

    RECT rect = {0, 0, cx, cy};
    FillRect(canvas, &rect, hbrush_bkgnd);

    DrawIconEx(canvas, 0, 0, hIcon, cx, cy, 0, hbrush_bkgnd, DI_NORMAL);

    return hbmp;
}

HBITMAP create_small_bitmap_from_icon(HICON hIcon, HBRUSH hbrush_bkgnd, HDC hdc_wnd)
{
    int cx = GetSystemMetrics(SM_CXSMICON);
    int cy = GetSystemMetrics(SM_CYSMICON);
    HBITMAP hbmp = CreateCompatibleBitmap(hdc_wnd, cx, cy);

    MemCanvas canvas;
    BitmapSelection sel(canvas, hbmp);

    RECT rect = {0, 0, cx, cy};
    FillRect(canvas, &rect, hbrush_bkgnd);

    DrawIconEx(canvas, 0, 0, hIcon, cx, cy, 0, hbrush_bkgnd, DI_NORMAL);

    return hbmp;
}

int ImageList_AddAlphaIcon(HIMAGELIST himl, HICON hIcon, HBRUSH hbrush_bkgnd, HDC hdc_wnd)
{
    HBITMAP hbmp = create_bitmap_from_icon(hIcon, hbrush_bkgnd, hdc_wnd);

    int ret = ImageList_Add(himl, hbmp, 0);

    DeleteObject(hbmp);

    return ret;
}


int IconCache::s_next_id = ICID_DYNAMIC;


void IconCache::init()
{
    int icon_size = STARTMENUROOT_ICON_SIZE;

    _icons[ICID_NONE]        = Icon(IT_STATIC, ICID_NONE, (HICON)0);

    _icons[ICID_FOLDER]        = Icon(ICID_FOLDER,        IDI_FOLDER);
    //_icons[ICID_DOCUMENT]    = Icon(ICID_DOCUMENT,    IDI_DOCUMENT);
    _icons[ICID_EXPLORER]    = Icon(ICID_EXPLORER,    IDI_EXPLORER);
    //_icons[ICID_APP]        = Icon(ICID_APP,        IDI_APPICON);

    _icons[ICID_CONFIG]        = Icon(ICID_CONFIG,        IDI_CONFIG,        icon_size);
    _icons[ICID_DOCUMENTS]    = Icon(ICID_DOCUMENTS,    IDI_DOCUMENTS,    icon_size);
    _icons[ICID_FAVORITES]    = Icon(ICID_FAVORITES,    IDI_FAVORITES,    icon_size);
    _icons[ICID_INFO]        = Icon(ICID_INFO,        IDI_INFO,        icon_size);
    _icons[ICID_APPS]        = Icon(ICID_APPS,        IDI_APPS,        icon_size);
    _icons[ICID_SEARCH]     = Icon(ICID_SEARCH,     IDI_SEARCH,        icon_size);
    _icons[ICID_ACTION]     = Icon(ICID_ACTION,     IDI_ACTION,        icon_size);
    _icons[ICID_SEARCH_DOC] = Icon(ICID_SEARCH_DOC, IDI_SEARCH_DOC,    icon_size);
    _icons[ICID_PRINTER]    = Icon(ICID_PRINTER,    IDI_PRINTER,    icon_size);
    _icons[ICID_NETWORK]    = Icon(ICID_NETWORK,    IDI_NETWORK,    icon_size);
    _icons[ICID_COMPUTER]    = Icon(ICID_COMPUTER,    IDI_COMPUTER,    icon_size);
    _icons[ICID_LOGOFF]     = Icon(ICID_LOGOFF,     IDI_LOGOFF,        icon_size);
    _icons[ICID_SHUTDOWN]    = Icon(ICID_SHUTDOWN,    IDI_SHUTDOWN,    icon_size);
    _icons[ICID_RESTART]    = Icon(ICID_RESTART,    IDI_RESTART,    icon_size);
    _icons[ICID_BOOKMARK]    = Icon(ICID_BOOKMARK,    IDI_DOT_TRANS,    icon_size);
    _icons[ICID_MINIMIZE]    = Icon(ICID_MINIMIZE,    IDI_MINIMIZE,    icon_size);
    _icons[ICID_CONTROLPAN] = Icon(ICID_CONTROLPAN, IDI_CONTROLPAN,    icon_size);
    _icons[ICID_DESKSETTING]= Icon(ICID_DESKSETTING,IDI_DESKSETTING,icon_size);
    _icons[ICID_NETCONNS]    = Icon(ICID_NETCONNS,    IDI_NETCONNS,    icon_size);
    _icons[ICID_ADMIN]        = Icon(ICID_ADMIN,        IDI_ADMIN,        icon_size);
    _icons[ICID_RECENT]     = Icon(ICID_RECENT,     IDI_RECENT,        icon_size);
}


const Icon& IconCache::extract(LPCTSTR path, ICONCACHE_FLAGS flags)
{
    // search for matching icon with unchanged flags in the cache
    CacheKey mapkey(path, flags);
    PathCacheMap::iterator found = _pathCache.find(mapkey);

    if (found != _pathCache.end())
        return _icons[found->second];

    // search for matching icon with handle
    CacheKey mapkey_hicon(path, flags|ICF_HICON);
    if (flags != mapkey_hicon.second) {
        found = _pathCache.find(mapkey_hicon);

        if (found != _pathCache.end())
            return _icons[found->second];
    }

     // search for matching icon in the system image list cache
    CacheKey mapkey_syscache(path, flags|ICF_SYSCACHE);
    if (flags != mapkey_syscache.second) {
        found = _pathCache.find(mapkey_syscache);

        if (found != _pathCache.end())
            return _icons[found->second];
    }

    SHFILEINFO sfi;

    int shgfi_flags = 0;

    if (flags & ICF_OPEN)
        shgfi_flags |= SHGFI_OPENICON;

    if ((flags&(ICF_LARGE|ICF_MIDDLE|ICF_OVERLAYS|ICF_HICON)) && !(flags&ICF_SYSCACHE)) {
        shgfi_flags |= SHGFI_ICON;

        if (!(flags & (ICF_LARGE|ICF_MIDDLE)))
            shgfi_flags |= SHGFI_SMALLICON;

        if (flags & ICF_OVERLAYS)
            shgfi_flags |= SHGFI_ADDOVERLAYS;

         // get small/big icons with/without overlays
        if (SHGetFileInfo(path, 0, &sfi, sizeof(sfi), shgfi_flags)) {
            const Icon& icon = add(sfi.hIcon, IT_CACHED);

            _pathCache[mapkey_hicon] = icon;

            return icon;
        }
    } else {
        assert(!(flags&ICF_OVERLAYS));

        shgfi_flags |= SHGFI_SYSICONINDEX|SHGFI_SMALLICON;

         // use system image list - the "search program dialog" needs it
        HIMAGELIST himlSys_small = (HIMAGELIST) SHGetFileInfo(path, 0, &sfi, sizeof(sfi), shgfi_flags);

        if (himlSys_small) {
            _himlSys_small = himlSys_small;

            const Icon& icon = add(sfi.iIcon/*, IT_SYSCACHE*/);

            _pathCache[mapkey_syscache] = icon;

            return icon;
        }
    }

    return _icons[ICID_NONE];
}

const Icon& IconCache::extract(LPCTSTR path, int icon_idx, ICONCACHE_FLAGS flags)
{
    IdxCacheKey key(path, make_pair(icon_idx, (flags|ICF_HICON)&~ICF_SYSCACHE));

    key.first.toLower();

    IdxCacheMap::iterator found = _idxCache.find(key);

    if (found != _idxCache.end())
        return _icons[found->second];

    HICON hIcon;

    if ((int)ExtractIconEx(path, icon_idx, NULL, &hIcon, 1) > 0) {
        const Icon& icon = add(hIcon, IT_CACHED);

        _idxCache[key] = icon;

        return icon;
    } else {


        return _icons[ICID_NONE];
    }
}

const Icon& IconCache::extract(IExtractIcon* pExtract, LPCTSTR path, int icon_idx, ICONCACHE_FLAGS flags)
{
    HICON hIconLarge = 0;
    HICON hIcon;

    int icon_size = ICON_SIZE_FROM_ICF(flags);
    HRESULT hr = pExtract->Extract(path, icon_idx, &hIconLarge, &hIcon, MAKELONG(GetSystemMetrics(SM_CXICON), icon_size));

    if (hr == NOERROR) {    //@@ oder SUCCEEDED(hr) ?
        if (icon_size > ICON_SIZE_SMALL) {    //@@ OK?
            if (hIcon)
                DestroyIcon(hIcon);

            hIcon = hIconLarge;
        } else {
            if (hIconLarge)
                DestroyIcon(hIconLarge);
        }

        if (hIcon)
            return add(hIcon);    //@@ When do we want not to free this icons?
    }

    return _icons[ICID_NONE];
}

const Icon& IconCache::extract(LPCITEMIDLIST pidl, ICONCACHE_FLAGS flags)
{
     // search for matching icon with unchanged flags in the cache
    PidlCacheKey mapkey(pidl, flags);
    PidlCacheMap::iterator found = _pidlcache.find(mapkey);

    if (found != _pidlcache.end())
        return _icons[found->second];

     // search for matching icon with handle
    PidlCacheKey mapkey_hicon(pidl, flags|ICF_HICON);
    if (flags != mapkey_hicon.second) {
        found = _pidlcache.find(mapkey_hicon);

        if (found != _pidlcache.end())
            return _icons[found->second];
    }

     // search for matching icon in the system image list cache
    PidlCacheKey mapkey_syscache(pidl, flags|ICF_SYSCACHE);
    if (flags != mapkey_syscache.second) {
        found = _pidlcache.find(mapkey_syscache);

        if (found != _pidlcache.end())
            return _icons[found->second];
    }

    SHFILEINFO sfi;

    int shgfi_flags = SHGFI_PIDL;

    if (!(flags & (ICF_LARGE|ICF_MIDDLE)))
        shgfi_flags |= SHGFI_SMALLICON;

    if (flags & ICF_OPEN)
        shgfi_flags |= SHGFI_OPENICON;

    if (flags & ICF_SYSCACHE) {
        assert(!(flags&ICF_OVERLAYS));

        HIMAGELIST himlSys = (HIMAGELIST) SHGetFileInfo((LPCTSTR)pidl, 0, &sfi, sizeof(sfi), SHGFI_SYSICONINDEX|shgfi_flags);
        if (himlSys) {
            const Icon& icon = add(sfi.iIcon/*, IT_SYSCACHE*/);

            _pidlcache[mapkey_syscache] = icon;

            return icon;
        }
    } else {
        if (flags & ICF_OVERLAYS)
            shgfi_flags |= SHGFI_ADDOVERLAYS;

        if (SHGetFileInfo((LPCTSTR)pidl, 0, &sfi, sizeof(sfi), SHGFI_ICON|shgfi_flags)) {
            const Icon& icon = add(sfi.hIcon, IT_CACHED);

            _pidlcache[mapkey_hicon] = icon;

            return icon;
        }
    }

    return _icons[ICID_NONE];
}


const Icon& IconCache::add(HICON hIcon, ICON_TYPE type)
{
    int id = ++s_next_id;

    return _icons[id] = Icon(type, id, hIcon);
}

const Icon&    IconCache::add(int sys_idx/*, ICON_TYPE type=IT_SYSCACHE*/)
{
    int id = ++s_next_id;

    return _icons[id] = SysCacheIcon(id, sys_idx);
}

const Icon& IconCache::get_icon(int id)
{
    return _icons[id];
}

IconCache::~IconCache()
{
/* We don't need to free cached resources - they are automatically freed at process termination
    for (int index = s_next_id; index >= 0; index--) {
        IconMap::iterator found = _icons.find(index);

        if (found != _icons.end()) {
            Icon& icon = found->second;

            if ((icon.get_icontype() == IT_DYNAMIC) ||
                (icon.get_icontype() == IT_CACHED))
            {
                DestroyIcon(icon.get_hicon());
                _icons.erase(found);
            }
        }
    }
*/
}

void IconCache::free_icon(int icon_id)
{
    IconMap::iterator found = _icons.find(icon_id);

    if (found != _icons.end()) {
        Icon& icon = found->second;

        if (icon.destroy())
            _icons.erase(found);
    }
}


ResString::ResString(UINT nid)
{
    TCHAR buffer[BUFFER_LEN];

    int len = LoadString(g_Globals._hInstance, nid, buffer, sizeof(buffer)/sizeof(TCHAR));

    super::assign(buffer, len);
}


ResIcon::ResIcon(UINT nid)
{
    _hicon = LoadIcon(g_Globals._hInstance, MAKEINTRESOURCE(nid));
}

SmallIcon::SmallIcon(UINT nid)
{
    _hicon = (HICON)LoadImage(g_Globals._hInstance, MAKEINTRESOURCE(nid), IMAGE_ICON, GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), LR_SHARED);
}

ResIconEx::ResIconEx(UINT nid, int w, int h)
{
    _hicon = (HICON)LoadImage(g_Globals._hInstance, MAKEINTRESOURCE(nid), IMAGE_ICON, w, h, LR_SHARED);
}


void SetWindowIcon(HWND hwnd, UINT nid)
{
    HICON hIcon = ResIcon(nid);
    (void)Window_SetIcon(hwnd, ICON_BIG, hIcon);

    HICON hIconSmall = SmallIcon(nid);
    (void)Window_SetIcon(hwnd, ICON_SMALL, hIconSmall);
}


ResBitmap::ResBitmap(UINT nid)
{
    _hBmp = LoadBitmap(g_Globals._hInstance, MAKEINTRESOURCE(nid));
}


#ifndef ROSSHELL

void explorer_show_frame(int cmdShow, LPTSTR lpCmdLine)
{
    ExplorerCmd cmd;

    if (g_Globals._hMainWnd) {
        if (IsIconic(g_Globals._hMainWnd))
            ShowWindow(g_Globals._hMainWnd, SW_RESTORE);
        else
            SetForegroundWindow(g_Globals._hMainWnd);

        return;
    }

    g_Globals._prescan_nodes = false;

    cmd._mdi =  true;
    cmd._cmdShow = cmdShow;

     // parse command line options, which may overwrite the MDI flag
    if (lpCmdLine)
        cmd.ParseCmdLine(lpCmdLine);

     // create main window
    MainFrameBase::Create(cmd);
}

bool ExplorerCmd::ParseCmdLine(LPCTSTR lpCmdLine)
{
    bool ok = true;

    LPCTSTR b = lpCmdLine;
    LPCTSTR p = b;

    while(*b) {
         // remove leading space
        while(_istspace((unsigned)*b))
            ++b;

        p = b;

        bool quote = false;

         // options are separated by ','
        for(; *p; ++p) {
            if (*p == '"')    // Quote characters may appear at any position in the command line.
                quote = !quote;
            else if (*p==',' && !quote)
                break;
        }

        if (p > b) {
            int l = p - b;

             // remove trailing space
            while(l>0 && _istspace((unsigned)b[l-1]))
                --l;

            if (!EvaluateOption(String(b, l)))
                ok = false;

            if (*p)
                ++p;

            b = p;
        }
    }

    return ok;
}

bool ExplorerCmd::EvaluateOption(LPCTSTR option)
{
    String opt_str;

     // Remove quote characters, as they are evaluated at this point.
    for(; *option; ++option)
        if (*option != '"')
            opt_str += *option;

    option = opt_str;

    if (option[0] == '/') {
        ++option;

         // option /e for windows in explorer mode
        if (!_tcsicmp(option, TEXT("e")))
            _flags |= OWM_EXPLORE;
         // option /root for rooted explorer windows
        else if (!_tcsicmp(option, TEXT("root")))
            _flags |= OWM_ROOTED;
         // non-standard options: /mdi, /sdi
        else if (!_tcsicmp(option, TEXT("mdi")))
            _mdi = true;
        else if (!_tcsicmp(option, TEXT("sdi")))
            _mdi = false;
        else if (!_tcsicmp(option, TEXT("n")))
        {
            // Do nothing
        }
        else if (!_tcsicmp(option, TEXT("select")))
        {
            SelectOpt = TRUE;
        }
        else
            return false;

    } else {
        if (!_path.empty())
            return false;

        if((SelectOpt == TRUE) && (PathFileExists(option)))
        {
            WCHAR szDir[MAX_PATH];

            _wsplitpath(option, szPath, szDir, NULL, NULL);
            wcscat(szPath, szDir);
            PathRemoveBackslash(szPath);
            _path = szPath;
            SelectOpt = FALSE;
        }
        else
            _path = opt_str;
    }

    return true;
}

bool ExplorerCmd::IsValidPath() const
{
    if (!_path.empty()) {
        DWORD attribs = GetFileAttributes(_path);

        if (attribs!=INVALID_FILE_ATTRIBUTES && (attribs&FILE_ATTRIBUTE_DIRECTORY))
            return true;    // file system path
        else if (*_path==':' && _path.at(1)==':')
            return true;    // text encoded IDL
    }

    return false;
}

#else

void explorer_show_frame(int cmdShow, LPTSTR lpCmdLine)
{
    if (!lpCmdLine)
        lpCmdLine = TEXT("explorer.exe");

    launch_file(GetDesktopWindow(), lpCmdLine, cmdShow);
}

#endif


PopupMenu::PopupMenu(UINT nid)
{
    HMENU hMenu = LoadMenu(g_Globals._hInstance, MAKEINTRESOURCE(nid));
    _hmenu = GetSubMenu(hMenu, 0);
    RemoveMenu(hMenu, 0, MF_BYPOSITION);
    DestroyMenu(hMenu);
}


struct ExplorerAboutDlg : public
            CtlColorParent<
                OwnerDrawParent<Dialog>
            >
{
    typedef CtlColorParent<
                OwnerDrawParent<Dialog>
            > super;

    ExplorerAboutDlg(HWND hwnd)
     :    super(hwnd)
    {
        SetWindowIcon(hwnd, IDI_REACTOS);

        new FlatButton(hwnd, IDOK);

        _hfont = CreateFont(20, 0, 0, 0, FW_BOLD, TRUE, 0, 0, 0, 0, 0, 0, 0, TEXT("Sans Serif"));
        new ColorStatic(hwnd, IDC_ROS_EXPLORER, RGB(32,32,128), 0, _hfont);

        new HyperlinkCtrl(hwnd, IDC_WWW);

        FmtString ver_txt(ResString(IDS_EXPLORER_VERSION_STR), (LPCTSTR)ResString(IDS_VERSION_STR));
        SetWindowText(GetDlgItem(hwnd, IDC_VERSION_TXT), ver_txt);

        HWND hwnd_winver = GetDlgItem(hwnd, IDC_WIN_VERSION);
        SetWindowText(hwnd_winver, get_windows_version_str());
        SetWindowFont(hwnd_winver, GetStockFont(DEFAULT_GUI_FONT), FALSE);

        CenterWindow(hwnd);
    }

    ~ExplorerAboutDlg()
    {
        DeleteObject(_hfont);
    }

    LRESULT WndProc(UINT nmsg, WPARAM wparam, LPARAM lparam)
    {
        switch(nmsg) {
          case WM_PAINT:
            Paint();
            break;

          default:
            return super::WndProc(nmsg, wparam, lparam);
        }

        return 0;
    }

    void Paint()
    {
        PaintCanvas canvas(_hwnd);

        HICON hicon = (HICON) LoadImage(g_Globals._hInstance, MAKEINTRESOURCE(IDI_REACTOS_BIG), IMAGE_ICON, 0, 0, LR_SHARED);

        DrawIconEx(canvas, 20, 10, hicon, 0, 0, 0, 0, DI_NORMAL);
    }

protected:
    HFONT    _hfont;
};

void explorer_about(HWND hwndParent)
{
    Dialog::DoModal(IDD_ABOUT_EXPLORER, WINDOW_CREATOR(ExplorerAboutDlg), hwndParent);
}


static void InitInstance(HINSTANCE hInstance)
{
    CONTEXT("InitInstance");

    setlocale(LC_COLLATE, "");    // set collating rules to local settings for compareName

#ifndef ROSSHELL
     // register frame window class
    g_Globals._hframeClass = IconWindowClass(CLASSNAME_FRAME,IDI_EXPLORER);

     // register child window class
    WindowClass(CLASSNAME_CHILDWND, CS_CLASSDC|CS_DBLCLKS).Register();

     // register tree window class
    WindowClass(CLASSNAME_WINEFILETREE, CS_CLASSDC|CS_DBLCLKS).Register();
#endif

    g_Globals._cfStrFName = RegisterClipboardFormat(CFSTR_FILENAME);
}


int explorer_main(HINSTANCE hInstance, LPTSTR lpCmdLine, int cmdShow)
{
    CONTEXT("explorer_main");

     // initialize Common Controls library
    CommonControlInit usingCmnCtrl;

    try {
        InitInstance(hInstance);
    } catch(COMException& e) {
        HandleException(e, GetDesktopWindow());
        return -1;
    }

#ifndef ROSSHELL
    if (cmdShow != SW_HIDE) {
/*    // don't maximize if being called from the ROS desktop
        if (cmdShow == SW_SHOWNORMAL)
            cmdShow = SW_MAXIMIZE;
*/

        explorer_show_frame(cmdShow, lpCmdLine);
    }
#endif

    Window::MessageLoop();

    return 1;
}


static bool SetShellReadyEvent(LPCTSTR evtName)
{
    HANDLE hEvent = OpenEvent(EVENT_MODIFY_STATE, FALSE, evtName);
    if (!hEvent)
        return false;

    SetEvent(hEvent);
    CloseHandle(hEvent);

    return true;
}


int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nShowCmd)
{
    CONTEXT("WinMain()");

    BOOL any_desktop_running = IsAnyDesktopRunning();

    BOOL startup_desktop;

    // strip extended options from the front of the command line
    String ext_options;

    while(*lpCmdLine == '-') {
        while(*lpCmdLine && !_istspace((unsigned)*lpCmdLine))
            ext_options += *lpCmdLine++;

        while(_istspace((unsigned)*lpCmdLine))
            ++lpCmdLine;
    }

     // command line option "-install" to replace previous shell application with ROS Explorer
    if (_tcsstr(ext_options,TEXT("-install"))) {
        // install ROS Explorer into the registry
        TCHAR path[MAX_PATH];

        int l = GetModuleFileName(0, path, COUNTOF(path));
        if (l) {
            HKEY hkey;

            if (!RegOpenKey(HKEY_LOCAL_MACHINE, TEXT("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon"), &hkey)) {


                RegSetValueEx(hkey, TEXT("Shell"), 0, REG_SZ, (LPBYTE)path, l*sizeof(TCHAR));
                RegCloseKey(hkey);
            }

            if (!RegOpenKey(HKEY_CURRENT_USER, TEXT("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon"), &hkey)) {


                RegSetValueEx(hkey, TEXT("Shell"), 0, REG_SZ, (LPBYTE)TEXT(""), l*sizeof(TCHAR));
                RegCloseKey(hkey);
            }
        }

        HWND shellWindow = GetShellWindow();

        if (shellWindow) {
            DWORD pid;

            // terminate shell process for NT like systems
            GetWindowThreadProcessId(shellWindow, &pid);
            HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);

             // On Win 9x it's sufficient to destroy the shell window.
            DestroyWindow(shellWindow);

            if (TerminateProcess(hProcess, 0))
                WaitForSingleObject(hProcess, INFINITE);

            CloseHandle(hProcess);
        }

        startup_desktop = TRUE;
    } else {
         // create desktop window and task bar only, if there is no other shell and we are
         // the first explorer instance
         // MS Explorer looks additionally into the registry entry HKCU\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell,
         // to decide wether it is currently configured as shell application.
        startup_desktop = !any_desktop_running;
    }


    bool autostart = !any_desktop_running;

    // disable autostart if the SHIFT key is pressed
    if (GetAsyncKeyState(VK_SHIFT) < 0)
        autostart = false;

#ifdef _DEBUG    //MF: disabled for debugging
    autostart = false;
#endif

    // If there is given the command line option "-desktop", create desktop window anyways
    if (_tcsstr(ext_options,TEXT("-desktop")))
        startup_desktop = TRUE;
#ifndef ROSSHELL
    else if (_tcsstr(ext_options,TEXT("-nodesktop")))
        startup_desktop = FALSE;

    // Don't display cabinet window in desktop mode
    if (startup_desktop && !_tcsstr(ext_options,TEXT("-explorer")))
        nShowCmd = SW_HIDE;
#endif

    if (_tcsstr(ext_options,TEXT("-noautostart")))
        autostart = false;
    else if (_tcsstr(ext_options,TEXT("-autostart")))
        autostart = true;

#ifndef __WINE__
    if (_tcsstr(ext_options,TEXT("-console"))) {
        AllocConsole();

        _dup2(_open_osfhandle((long)GetStdHandle(STD_INPUT_HANDLE), _O_RDONLY), 0);
        _dup2(_open_osfhandle((long)GetStdHandle(STD_OUTPUT_HANDLE), 0), 1);
        _dup2(_open_osfhandle((long)GetStdHandle(STD_ERROR_HANDLE), 0), 2);

        g_Globals._log = _fdopen(1, "w");
        setvbuf(g_Globals._log, 0, _IONBF, 0);

        LOG(TEXT("starting explorer debug log\n"));
    }
#endif


    if (startup_desktop) {
         // hide the XP login screen (Credit to Nicolas Escuder)
         // another undocumented event: "Global\\msgina: ReturnToWelcome"
        if (!SetShellReadyEvent(TEXT("msgina: ShellReadyEvent")))
            SetShellReadyEvent(TEXT("Global\\msgina: ShellReadyEvent"));
    }
#ifdef ROSSHELL
    else
        return 0;    // no shell to launch, so exit immediatelly
#endif


    if (!any_desktop_running) {
        // launch the shell DDE server
        if (g_SHDOCVW_ShellDDEInit)
            (*g_SHDOCVW_ShellDDEInit)(TRUE);
    }


    bool use_gdb_stub = false;    // !IsDebuggerPresent();

    if (_tcsstr(ext_options,TEXT("-debug")))
        use_gdb_stub = true;

    if (_tcsstr(ext_options,TEXT("-break"))) {
        LOG(TEXT("debugger breakpoint"));
        __debugbreak();
    }

#ifdef _M_IX86
    // activate GDB remote debugging stub if no other debugger is running
    if (use_gdb_stub) {
        LOG(TEXT("waiting for debugger connection...\n"));

        initialize_gdb_stub();
    }
#endif

    g_Globals.init(hInstance);

    // initialize COM and OLE before creating the desktop window
    OleInit usingCOM;

    // init common controls library
    CommonControlInit usingCmnCtrl;

    g_Globals.read_persistent();

    if (startup_desktop) {
        WaitCursor wait;

        g_Globals._desktops.init();

        g_Globals._hwndDesktop = DesktopWindow::Create();
#ifdef _USE_HDESK
        g_Globals._desktops.get_current_Desktop()->_hwndDesktop = g_Globals._hwndDesktop;
#endif
    }

    if (_tcsstr(ext_options,TEXT("-?"))) {
        MessageBoxA(g_Globals._hwndDesktop,
            "/e        open cabinet window in explorer mode\r\n"
            "/root        open cabinet window in rooted mode\r\n"
            "/mdi        open cabinet window in MDI mode\r\n"
            "/sdi        open cabinet window in SDI mode\r\n"
            "\r\n"
            "-?        display command line options\r\n"
            "\r\n"
            "-desktop        start in desktop mode regardless of an already running shell\r\n"
            "-nodesktop    disable desktop mode\r\n"
            "-explorer        display cabinet window regardless of enabled desktop mode\r\n"
            "\r\n"
            "-install        replace previous shell application with ROS Explorer\r\n"
            "\r\n"
            "-noautostart    disable autostarts\r\n"
            "-autostart    enable autostarts regardless of debug build\r\n"
            "\r\n"
            "-console        open debug console\r\n"
            "\r\n"
            "-debug        activate GDB remote debugging stub\r\n"
            "-break        activate debugger breakpoint\r\n",
            "ROS Explorer - command line options", MB_OK);
    }

    /*
     * Set our shutdown parameters: we want to shutdown the very last,
     * but before any TaskMgr instance (which has a shutdown level of 1).
     */
    SetProcessShutdownParameters(2, 0);

    Thread* pSSOThread = NULL;

    if (startup_desktop) {
        // launch SSO thread to allow message processing independent from the explorer main thread
        pSSOThread = new SSOThread;
        pSSOThread->Start();
    }

    if (autostart) {
        const char* argv[] = {"", "s"};    // call startup routine in SESSION_START mode
        startup(2, argv);
    }

#ifndef ROSSHELL
    if (g_Globals._hwndDesktop)
        g_Globals._desktop_mode = true;
#endif


    int ret = explorer_main(hInstance, lpCmdLine, nShowCmd);


    // write configuration file
    g_Globals.write_persistent();

    if (pSSOThread) {
        pSSOThread->Stop();
        delete pSSOThread;
    }

    if (!any_desktop_running) {
        // shutdown the shell DDE server
        if (g_SHDOCVW_ShellDDEInit)
            (*g_SHDOCVW_ShellDDEInit)(FALSE);
    }

    return ret;
}