4 * Copyright 1997 Marcus Meissner
5 * Copyright 1998, 1999, 2002 Juergen Schmied
7 * IShellFolder2 and related interfaces
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 #include "wine/port.h"
45 #include "undocshell.h"
46 #include "shell32_main.h"
48 #include "wine/debug.h"
51 WINE_DEFAULT_DEBUG_CHANNEL (shell);
53 static const WCHAR wszDotShellClassInfo[] = {
54 '.','S','h','e','l','l','C','l','a','s','s','I','n','f','o',0};
56 /***************************************************************************
57 * SHELL32_GetCustomFolderAttribute (internal function)
59 * Gets a value from the folder's desktop.ini file, if one exists.
62 * pidl [I] Folder containing the desktop.ini file.
63 * pwszHeading [I] Heading in .ini file.
64 * pwszAttribute [I] Attribute in .ini file.
65 * pwszValue [O] Buffer to store value into.
66 * cchValue [I] Size in characters including NULL of buffer pointed to
70 * TRUE if returned non-NULL value.
73 static inline BOOL SHELL32_GetCustomFolderAttributeFromPath(
74 LPWSTR pwszFolderPath, LPCWSTR pwszHeading, LPCWSTR pwszAttribute,
75 LPWSTR pwszValue, DWORD cchValue)
77 static const WCHAR wszDesktopIni[] =
78 {'d','e','s','k','t','o','p','.','i','n','i',0};
79 static const WCHAR wszDefault[] = {0};
81 PathAddBackslashW(pwszFolderPath);
82 PathAppendW(pwszFolderPath, wszDesktopIni);
83 return GetPrivateProfileStringW(pwszHeading, pwszAttribute, wszDefault,
84 pwszValue, cchValue, pwszFolderPath);
87 BOOL SHELL32_GetCustomFolderAttribute(
88 LPCITEMIDLIST pidl, LPCWSTR pwszHeading, LPCWSTR pwszAttribute,
89 LPWSTR pwszValue, DWORD cchValue)
91 DWORD dwAttrib = FILE_ATTRIBUTE_SYSTEM;
92 WCHAR wszFolderPath[MAX_PATH];
94 /* Hack around not having system attribute on non-Windows file systems */
96 dwAttrib = _ILGetFileAttributes(pidl, NULL, 0);
98 if (dwAttrib & FILE_ATTRIBUTE_SYSTEM)
100 if (!SHGetPathFromIDListW(pidl, wszFolderPath))
103 return SHELL32_GetCustomFolderAttributeFromPath(wszFolderPath, pwszHeading,
104 pwszAttribute, pwszValue, cchValue);
109 /***************************************************************************
110 * GetNextElement (internal function)
112 * Gets a part of a string till the first backslash.
115 * pszNext [IN] string to get the element from
116 * pszOut [IN] pointer to buffer which receives string
117 * dwOut [IN] length of pszOut
120 * LPSTR pointer to first, not yet parsed char
123 LPCWSTR GetNextElementW (LPCWSTR pszNext, LPWSTR pszOut, DWORD dwOut)
125 LPCWSTR pszTail = pszNext;
128 TRACE ("(%s %p 0x%08x)\n", debugstr_w (pszNext), pszOut, dwOut);
132 if (!pszNext || !*pszNext)
135 while (*pszTail && (*pszTail != (WCHAR) '\\'))
138 dwCopy = pszTail - pszNext + 1;
139 lstrcpynW (pszOut, pszNext, (dwOut < dwCopy) ? dwOut : dwCopy);
146 TRACE ("--(%s %s 0x%08x %p)\n", debugstr_w (pszNext), debugstr_w (pszOut), dwOut, pszTail);
150 HRESULT SHELL32_ParseNextElement (IShellFolder2 * psf, HWND hwndOwner, LPBC pbc,
151 LPITEMIDLIST * pidlInOut, LPOLESTR szNext, DWORD * pEaten, DWORD * pdwAttributes)
153 HRESULT hr = E_INVALIDARG;
154 LPITEMIDLIST pidlOut = NULL,
156 IShellFolder *psfChild;
158 TRACE ("(%p, %p, %p, %s)\n", psf, pbc, pidlInOut ? *pidlInOut : NULL, debugstr_w (szNext));
160 /* get the shellfolder for the child pidl and let it analyse further */
161 hr = IShellFolder_BindToObject (psf, *pidlInOut, pbc, &IID_IShellFolder, (LPVOID *) & psfChild);
164 hr = IShellFolder_ParseDisplayName (psfChild, hwndOwner, pbc, szNext, pEaten, &pidlOut, pdwAttributes);
165 IShellFolder_Release (psfChild);
168 pidlTemp = ILCombine (*pidlInOut, pidlOut);
179 *pidlInOut = pidlTemp;
181 TRACE ("-- pidl=%p ret=0x%08x\n", pidlInOut ? *pidlInOut : NULL, hr);
185 /***********************************************************************
186 * SHELL32_CoCreateInitSF
188 * Creates a shell folder and initializes it with a pidl and a root folder
189 * via IPersistFolder3 or IPersistFolder.
192 * pathRoot can be NULL for Folders being a drive.
193 * In this case the absolute path is built from pidlChild (eg. C:)
195 static HRESULT SHELL32_CoCreateInitSF (LPCITEMIDLIST pidlRoot, LPCWSTR pathRoot,
196 LPCITEMIDLIST pidlChild, REFCLSID clsid, LPVOID * ppvOut)
200 TRACE ("%p %s %p\n", pidlRoot, debugstr_w(pathRoot), pidlChild);
202 hr = SHCoCreateInstance(NULL, clsid, NULL, &IID_IShellFolder, ppvOut);
205 LPITEMIDLIST pidlAbsolute = ILCombine (pidlRoot, pidlChild);
207 IPersistFolder3 *ppf;
209 if (_ILIsFolder(pidlChild) &&
210 SUCCEEDED (IUnknown_QueryInterface ((IUnknown *) * ppvOut, &IID_IPersistFolder3, (LPVOID *) & ppf)))
212 PERSIST_FOLDER_TARGET_INFO ppfti;
214 ZeroMemory (&ppfti, sizeof (ppfti));
216 /* fill the PERSIST_FOLDER_TARGET_INFO */
217 ppfti.dwAttributes = -1;
222 lstrcpynW (ppfti.szTargetParsingName, pathRoot, MAX_PATH - 1);
223 PathAddBackslashW(ppfti.szTargetParsingName); /* FIXME: why have drives a backslash here ? */
227 int len = lstrlenW(ppfti.szTargetParsingName);
229 if (!_ILSimpleGetTextW(pidlChild, ppfti.szTargetParsingName + len, MAX_PATH - len))
233 IPersistFolder3_InitializeEx (ppf, NULL, pidlAbsolute, &ppfti);
234 IPersistFolder3_Release (ppf);
236 else if (SUCCEEDED ((hr = IUnknown_QueryInterface ((IUnknown *) * ppvOut, &IID_IPersistFolder, (LPVOID *) & pPF)))) {
237 IPersistFolder_Initialize (pPF, pidlAbsolute);
238 IPersistFolder_Release (pPF);
240 ILFree (pidlAbsolute);
242 TRACE ("-- (%p) ret=0x%08x\n", *ppvOut, hr);
246 /***********************************************************************
247 * SHELL32_BindToChild [Internal]
249 * Common code for IShellFolder_BindToObject.
252 * pidlRoot [I] The parent shell folder's absolute pidl.
253 * pathRoot [I] Absolute dos path of the parent shell folder.
254 * pidlComplete [I] PIDL of the child. Relative to pidlRoot.
255 * riid [I] GUID of the interface, which ppvOut shall be bound to.
256 * ppvOut [O] A reference to the child's interface (riid).
259 * pidlComplete has to contain at least one non empty SHITEMID.
260 * This function makes special assumptions on the shell namespace, which
261 * means you probably can't use it for your IShellFolder implementation.
263 HRESULT SHELL32_BindToChild (LPCITEMIDLIST pidlRoot,
264 LPCWSTR pathRoot, LPCITEMIDLIST pidlComplete, REFIID riid, LPVOID * ppvOut)
269 LPITEMIDLIST pidlChild;
271 if (!pidlRoot || !ppvOut || !pidlComplete || !pidlComplete->mkid.cb)
276 pidlChild = ILCloneFirst (pidlComplete);
278 if ((clsid = _ILGetGUIDPointer (pidlChild))) {
280 hr = SHELL32_CoCreateInitSF (pidlRoot, pathRoot, pidlChild, clsid, (LPVOID *)&pSF);
282 /* file system folder */
283 CLSID clsidFolder = CLSID_ShellFSFolder;
284 static const WCHAR wszCLSID[] = {'C','L','S','I','D',0};
285 WCHAR wszCLSIDValue[CHARS_IN_GUID], wszFolderPath[MAX_PATH], *pwszPathTail = wszFolderPath;
287 /* see if folder CLSID should be overridden by desktop.ini file */
289 lstrcpynW(wszFolderPath, pathRoot, MAX_PATH);
290 pwszPathTail = PathAddBackslashW(wszFolderPath);
293 _ILSimpleGetTextW(pidlChild,pwszPathTail,MAX_PATH - (int)(pwszPathTail - wszFolderPath));
295 if (SHELL32_GetCustomFolderAttributeFromPath (wszFolderPath,
296 wszDotShellClassInfo, wszCLSID, wszCLSIDValue, CHARS_IN_GUID))
297 CLSIDFromString (wszCLSIDValue, &clsidFolder);
299 hr = SHELL32_CoCreateInitSF (pidlRoot, pathRoot, pidlChild,
300 &clsidFolder, (LPVOID *)&pSF);
304 if (SUCCEEDED (hr)) {
305 if (_ILIsPidlSimple (pidlComplete)) {
307 hr = IShellFolder_QueryInterface (pSF, riid, ppvOut);
310 hr = IShellFolder_BindToObject (pSF, ILGetNext (pidlComplete), NULL, riid, ppvOut);
312 IShellFolder_Release (pSF);
315 TRACE ("-- returning (%p) %08x\n", *ppvOut, hr);
320 /***********************************************************************
321 * SHELL32_GetDisplayNameOfChild
323 * Retrieves the display name of a child object of a shellfolder.
325 * For a pidl eg. [subpidl1][subpidl2][subpidl3]:
326 * - it binds to the child shellfolder [subpidl1]
327 * - asks it for the displayname of [subpidl2][subpidl3]
329 * Is possible the pidl is a simple pidl. In this case it asks the
330 * subfolder for the displayname of an empty pidl. The subfolder
331 * returns the own displayname eg. "::{guid}". This is used for
332 * virtual folders with the registry key WantsFORPARSING set.
334 HRESULT SHELL32_GetDisplayNameOfChild (IShellFolder2 * psf,
335 LPCITEMIDLIST pidl, DWORD dwFlags, LPWSTR szOut, DWORD dwOutLen)
337 LPITEMIDLIST pidlFirst;
338 HRESULT hr = E_INVALIDARG;
340 TRACE ("(%p)->(pidl=%p 0x%08x %p 0x%08x)\n", psf, pidl, dwFlags, szOut, dwOutLen);
343 pidlFirst = ILCloneFirst (pidl);
345 IShellFolder2 *psfChild;
347 hr = IShellFolder_BindToObject (psf, pidlFirst, NULL, &IID_IShellFolder, (LPVOID *) & psfChild);
348 if (SUCCEEDED (hr)) {
350 LPITEMIDLIST pidlNext = ILGetNext (pidl);
352 hr = IShellFolder_GetDisplayNameOf (psfChild, pidlNext, dwFlags, &strTemp);
353 if (SUCCEEDED (hr)) {
354 if(!StrRetToStrNW (szOut, dwOutLen, &strTemp, pidlNext))
357 IShellFolder_Release (psfChild);
363 TRACE ("-- ret=0x%08x %s\n", hr, debugstr_w(szOut));
368 /***********************************************************************
369 * SHELL32_GetItemAttributes
373 * folder: 0xE0000177 FILESYSTEM | HASSUBFOLDER | FOLDER
374 * file: 0x40000177 FILESYSTEM
375 * drive: 0xf0000144 FILESYSTEM | HASSUBFOLDER | FOLDER | FILESYSANCESTOR
376 * mycomputer: 0xb0000154 HASSUBFOLDER | FOLDER | FILESYSANCESTOR
377 * (seems to be default for shell extensions if no registry entry exists)
380 * folder: 0xF0400177 FILESYSTEM | HASSUBFOLDER | FOLDER | FILESYSANCESTOR | CANMONIKER
381 * file: 0x40400177 FILESYSTEM | CANMONIKER
382 * drive 0xF0400154 FILESYSTEM | HASSUBFOLDER | FOLDER | FILESYSANCESTOR | CANMONIKER | CANRENAME (LABEL)
384 * According to the MSDN documentation this function should not set flags. It claims only to reset flags when necessary.
385 * However it turns out the native shell32.dll _sets_ flags in several cases - so do we.
387 HRESULT SHELL32_GetItemAttributes (IShellFolder * psf, LPCITEMIDLIST pidl, LPDWORD pdwAttributes)
391 static const DWORD dwSupportedAttr=
392 SFGAO_CANCOPY | /*0x00000001 */
393 SFGAO_CANMOVE | /*0x00000002 */
394 SFGAO_CANLINK | /*0x00000004 */
395 SFGAO_CANRENAME | /*0x00000010 */
396 SFGAO_CANDELETE | /*0x00000020 */
397 SFGAO_HASPROPSHEET | /*0x00000040 */
398 SFGAO_DROPTARGET | /*0x00000100 */
399 SFGAO_LINK | /*0x00010000 */
400 SFGAO_READONLY | /*0x00040000 */
401 SFGAO_HIDDEN | /*0x00080000 */
402 SFGAO_FILESYSANCESTOR | /*0x10000000 */
403 SFGAO_FOLDER | /*0x20000000 */
404 SFGAO_FILESYSTEM | /*0x40000000 */
405 SFGAO_HASSUBFOLDER; /*0x80000000 */
407 TRACE ("0x%08x\n", *pdwAttributes);
409 if (*pdwAttributes & ~dwSupportedAttr)
411 WARN ("attributes 0x%08x not implemented\n", (*pdwAttributes & ~dwSupportedAttr));
412 *pdwAttributes &= dwSupportedAttr;
415 has_guid = _ILGetGUIDPointer(pidl) != NULL;
417 dwAttributes = *pdwAttributes;
419 if (_ILIsDrive (pidl)) {
420 *pdwAttributes &= SFGAO_HASSUBFOLDER|SFGAO_FILESYSTEM|SFGAO_FOLDER|SFGAO_FILESYSANCESTOR|
421 SFGAO_DROPTARGET|SFGAO_HASPROPSHEET|SFGAO_CANLINK;
422 } else if (has_guid && HCR_GetFolderAttributes(pidl, &dwAttributes)) {
423 *pdwAttributes = dwAttributes;
424 } else if (_ILGetDataPointer (pidl)) {
425 dwAttributes = _ILGetFileAttributes (pidl, NULL, 0);
427 if (!dwAttributes && has_guid) {
428 WCHAR path[MAX_PATH];
431 /* File attributes are not present in the internal PIDL structure, so get them from the file system. */
433 HRESULT hr = IShellFolder_GetDisplayNameOf(psf, pidl, SHGDN_FORPARSING, &strret);
436 hr = StrRetToBufW(&strret, pidl, path, MAX_PATH);
438 /* call GetFileAttributes() only for file system paths, not for parsing names like "::{...}" */
439 if (SUCCEEDED(hr) && path[0]!=':')
440 dwAttributes = GetFileAttributesW(path);
444 /* Set common attributes */
445 *pdwAttributes |= SFGAO_FILESYSTEM | SFGAO_DROPTARGET | SFGAO_HASPROPSHEET | SFGAO_CANDELETE |
446 SFGAO_CANRENAME | SFGAO_CANLINK | SFGAO_CANMOVE | SFGAO_CANCOPY;
448 if (dwAttributes & FILE_ATTRIBUTE_DIRECTORY)
449 *pdwAttributes |= (SFGAO_FOLDER | SFGAO_HASSUBFOLDER | SFGAO_FILESYSANCESTOR);
451 *pdwAttributes &= ~(SFGAO_FOLDER | SFGAO_HASSUBFOLDER | SFGAO_FILESYSANCESTOR);
453 if (dwAttributes & FILE_ATTRIBUTE_HIDDEN)
454 *pdwAttributes |= SFGAO_HIDDEN;
456 *pdwAttributes &= ~SFGAO_HIDDEN;
458 if (dwAttributes & FILE_ATTRIBUTE_READONLY)
459 *pdwAttributes |= SFGAO_READONLY;
461 *pdwAttributes &= ~SFGAO_READONLY;
463 if (SFGAO_LINK & *pdwAttributes) {
466 if (!_ILGetExtension(pidl, ext, MAX_PATH) || lstrcmpiA(ext, "lnk"))
467 *pdwAttributes &= ~SFGAO_LINK;
470 *pdwAttributes &= SFGAO_HASSUBFOLDER|SFGAO_FOLDER|SFGAO_FILESYSANCESTOR|SFGAO_DROPTARGET|SFGAO_HASPROPSHEET|SFGAO_CANRENAME|SFGAO_CANLINK;
472 TRACE ("-- 0x%08x\n", *pdwAttributes);
476 /***********************************************************************
479 HRESULT SHELL32_CompareIDs (IShellFolder * iface, LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
483 char szTemp1[MAX_PATH];
484 char szTemp2[MAX_PATH];
486 LPITEMIDLIST firstpidl,
491 /* test for empty pidls */
492 BOOL isEmpty1 = _ILIsDesktop (pidl1);
493 BOOL isEmpty2 = _ILIsDesktop (pidl2);
495 if (isEmpty1 && isEmpty2)
496 return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 0 );
498 return MAKE_HRESULT( SEVERITY_SUCCESS, 0, (WORD)-1 );
500 return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 1 );
502 /* test for different types. Sort order is the PT_* constant */
503 type1 = _ILGetDataPointer (pidl1)->type;
504 type2 = _ILGetDataPointer (pidl2)->type;
506 return MAKE_HRESULT( SEVERITY_SUCCESS, 0, (WORD)-1 );
507 else if (type1 > type2)
508 return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 1 );
510 /* test for name of pidl */
511 _ILSimpleGetText (pidl1, szTemp1, MAX_PATH);
512 _ILSimpleGetText (pidl2, szTemp2, MAX_PATH);
513 nReturn = lstrcmpiA (szTemp1, szTemp2);
515 return MAKE_HRESULT( SEVERITY_SUCCESS, 0, (WORD)-1 );
516 else if (nReturn > 0)
517 return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 1 );
519 /* test of complex pidls */
520 firstpidl = ILCloneFirst (pidl1);
521 nextpidl1 = ILGetNext (pidl1);
522 nextpidl2 = ILGetNext (pidl2);
524 /* optimizing: test special cases and bind not deeper */
525 /* the deeper shellfolder would do the same */
526 isEmpty1 = _ILIsDesktop (nextpidl1);
527 isEmpty2 = _ILIsDesktop (nextpidl2);
529 if (isEmpty1 && isEmpty2) {
530 return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 0 );
531 } else if (isEmpty1) {
532 return MAKE_HRESULT( SEVERITY_SUCCESS, 0, (WORD)-1 );
533 } else if (isEmpty2) {
534 return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 1 );
536 } else if (SUCCEEDED (IShellFolder_BindToObject (iface, firstpidl, NULL, &IID_IShellFolder, (LPVOID *) & psf))) {
537 nReturn = IShellFolder_CompareIDs (psf, lParam, nextpidl1, nextpidl2);
538 IShellFolder_Release (psf);
544 /***********************************************************************
549 HRESULT WINAPI SHCreateLinks( HWND hWnd, LPCSTR lpszDir, LPDATAOBJECT lpDataObject,
550 UINT uFlags, LPITEMIDLIST *lppidlLinks)
552 FIXME("%p %s %p %08x %p\n",hWnd,lpszDir,lpDataObject,uFlags,lppidlLinks);