dlls/shell32/shfldr_desktop.c

   1
   2 /*
   3  *    Virtual Desktop Folder
   4  *
   5  *    Copyright 1997            Marcus Meissner
   6  *    Copyright 1998, 1999, 2002    Juergen Schmied
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdarg.h>
  29 #include <stdio.h>
  30
  31 #define COBJMACROS
  32 #define NONAMELESSUNION
  33 #define NONAMELESSSTRUCT
  34
  35 #include "winerror.h"
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "winreg.h"
  39 #include "wingdi.h"
  40 #include "winuser.h"
  41
  42 #include "ole2.h"
  43 #include "shlguid.h"
  44
  45 #include "enumidlist.h"
  46 #include "pidl.h"
  47 #include "undocshell.h"
  48 #include "shell32_main.h"
  49 #include "shresdef.h"
  50 #include "shlwapi.h"
  51 #include "shellfolder.h"
  52 #include "wine/debug.h"
  53 #include "debughlp.h"
  54 #include "shfldr.h"
  55
  56 WINE_DEFAULT_DEBUG_CHANNEL (shell);
  57
  58 /***********************************************************************
  59 *     Desktopfolder implementation
  60 */
  61
  62 typedef struct {
  63     IShellFolder2Vtbl *lpVtbl;
  64     DWORD ref;
  65
  66     CLSID *pclsid;
  67
  68     /* both paths are parsible from the desktop */
  69     LPWSTR sPathTarget;     /* complete path to target used for enumeration and ChangeNotify */
  70     LPITEMIDLIST pidlRoot;  /* absolute pidl */
  71
  72     int dwAttributes;        /* attributes returned by GetAttributesOf FIXME: use it */
  73
  74     UINT cfShellIDList;        /* clipboardformat for IDropTarget */
  75     BOOL fAcceptFmt;        /* flag for pending Drop */
  76 } IGenericSFImpl;
  77
  78 #define _IUnknown_(This)    (IShellFolder*)&(This->lpVtbl)
  79 #define _IShellFolder_(This)    (IShellFolder*)&(This->lpVtbl)
  80
  81 static shvheader DesktopSFHeader[] = {
  82     {IDS_SHV_COLUMN1, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 15},
  83     {IDS_SHV_COLUMN2, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  84     {IDS_SHV_COLUMN3, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  85     {IDS_SHV_COLUMN4, SHCOLSTATE_TYPE_DATE | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 12},
  86     {IDS_SHV_COLUMN5, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 5}
  87 };
  88
  89 #define DESKTOPSHELLVIEWCOLUMNS 5
  90
  91 /**************************************************************************
  92  *    ISF_Desktop_fnQueryInterface
  93  *
  94  * NOTES supports not IPersist/IPersistFolder
  95  */
  96 static HRESULT WINAPI ISF_Desktop_fnQueryInterface(
  97                 IShellFolder2 * iface, REFIID riid, LPVOID * ppvObj)
  98 {
  99     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 100
 101     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
 102
 103     *ppvObj = NULL;
 104
 105     if (IsEqualIID (riid, &IID_IUnknown) ||
 106         IsEqualIID (riid, &IID_IShellFolder) ||
 107         IsEqualIID (riid, &IID_IShellFolder2))
 108     {
 109         *ppvObj = This;
 110     }
 111
 112     if (*ppvObj)
 113     {
 114         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 115         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 116         return S_OK;
 117     }
 118     TRACE ("-- Interface: E_NOINTERFACE\n");
 119     return E_NOINTERFACE;
 120 }
 121
 122 static ULONG WINAPI ISF_Desktop_fnAddRef (IShellFolder2 * iface)
 123 {
 124     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 125     ULONG refCount = InterlockedIncrement(&This->ref);
 126
 127     TRACE ("(%p)->(count=%lu)\n", This, refCount - 1);
 128
 129     return refCount;
 130 }
 131
 132 static ULONG WINAPI ISF_Desktop_fnRelease (IShellFolder2 * iface)
 133 {
 134     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 135     ULONG refCount = InterlockedDecrement(&This->ref);
 136
 137     TRACE ("(%p)->(count=%lu)\n", This, refCount + 1);
 138
 139     if (!refCount)
 140     {
 141         TRACE ("-- destroying IShellFolder(%p)\n", This);
 142         if (This->pidlRoot)
 143             SHFree (This->pidlRoot);
 144         if (This->sPathTarget)
 145             SHFree (This->sPathTarget);
 146         LocalFree ((HLOCAL) This);
 147         return 0;
 148     }
 149     return refCount;
 150 }
 151
 152 /**************************************************************************
 153  *    ISF_Desktop_fnParseDisplayName
 154  *
 155  * NOTES
 156  *    "::{20D04FE0-3AEA-1069-A2D8-08002B30309D}" and "" binds
 157  *    to MyComputer
 158  */
 159 static HRESULT WINAPI ISF_Desktop_fnParseDisplayName (IShellFolder2 * iface,
 160                 HWND hwndOwner, LPBC pbc, LPOLESTR lpszDisplayName,
 161                 DWORD * pchEaten, LPITEMIDLIST * ppidl, DWORD * pdwAttributes)
 162 {
 163     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 164     WCHAR szElement[MAX_PATH];
 165     LPCWSTR szNext = NULL;
 166     LPITEMIDLIST pidlTemp = NULL;
 167     HRESULT hr = S_OK;
 168     CLSID clsid;
 169
 170     TRACE ("(%p)->(HWND=%p,%p,%p=%s,%p,pidl=%p,%p)\n",
 171            This, hwndOwner, pbc, lpszDisplayName, debugstr_w(lpszDisplayName),
 172            pchEaten, ppidl, pdwAttributes);
 173
 174     if (!lpszDisplayName || !ppidl)
 175         return E_INVALIDARG;
 176
 177     *ppidl = 0;
 178
 179     if (pchEaten)
 180         *pchEaten = 0;        /* strange but like the original */
 181
 182     if (lpszDisplayName[0] == ':' && lpszDisplayName[1] == ':')
 183     {
 184         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 185         TRACE ("-- element: %s\n", debugstr_w (szElement));
 186         SHCLSIDFromStringW (szElement + 2, &clsid);
 187         pidlTemp = _ILCreateGuid (PT_GUID, &clsid);
 188     }
 189     else if (PathGetDriveNumberW (lpszDisplayName) >= 0)
 190     {
 191         /* it's a filesystem path with a drive. Let MyComputer parse it */
 192         pidlTemp = _ILCreateMyComputer ();
 193         szNext = lpszDisplayName;
 194     }
 195     else if (PathIsUNCW(lpszDisplayName))
 196     {
 197         pidlTemp = _ILCreateNetwork();
 198         szNext = lpszDisplayName;
 199     }
 200     else if( (pidlTemp = SHELL32_CreatePidlFromBindCtx(pbc, lpszDisplayName)) )
 201     {
 202         *ppidl = pidlTemp;
 203         return S_OK;
 204     }
 205     else
 206     {
 207         /* it's a filesystem path on the desktop. Let a FSFolder parse it */
 208
 209         if (*lpszDisplayName)
 210         {
 211             WCHAR szPath[MAX_PATH];
 212             LPWSTR pathPtr;
 213
 214             /* build a complete path to create a simple pidl */
 215             lstrcpynW(szPath, This->sPathTarget, MAX_PATH);
 216             pathPtr = PathAddBackslashW(szPath);
 217             if (pathPtr)
 218             {
 219                 lstrcpynW(pathPtr, lpszDisplayName, MAX_PATH - (pathPtr - szPath));
 220                 hr = _ILCreateFromPathW(szPath, &pidlTemp);
 221             }
 222             else
 223             {
 224                 /* should never reach here, but for completeness */
 225                 hr = HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
 226             }
 227         }
 228         else
 229             pidlTemp = _ILCreateMyComputer();
 230
 231         szNext = NULL;
 232     }
 233
 234     if (SUCCEEDED(hr) && pidlTemp)
 235     {
 236         if (szNext && *szNext)
 237         {
 238             hr = SHELL32_ParseNextElement(iface, hwndOwner, pbc,
 239                     &pidlTemp, (LPOLESTR) szNext, pchEaten, pdwAttributes);
 240         }
 241         else
 242         {
 243             if (pdwAttributes && *pdwAttributes)
 244                 hr = SHELL32_GetItemAttributes(_IShellFolder_ (This),
 245                                                pidlTemp, pdwAttributes);
 246         }
 247     }
 248
 249     *ppidl = pidlTemp;
 250
 251     TRACE ("(%p)->(-- ret=0x%08lx)\n", This, hr);
 252
 253     return hr;
 254 }
 255
 256 /**************************************************************************
 257  *  CreateDesktopEnumList()
 258  */
 259 static const WCHAR Desktop_NameSpaceW[] = { 'S','O','F','T','W','A','R','E',
 260  '\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 261  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','E','x','p','l',
 262  'o','r','e','r','\\','D','e','s','k','t','o','p','\\','N','a','m','e','s','p',
 263  'a','c','e','\0' };
 264
 265 static BOOL CreateDesktopEnumList(IEnumIDList *list, DWORD dwFlags)
 266 {
 267     BOOL ret = TRUE;
 268     WCHAR szPath[MAX_PATH];
 269
 270     TRACE("(%p)->(flags=0x%08lx) \n",list,dwFlags);
 271
 272     /* enumerate the root folders */
 273     if (dwFlags & SHCONTF_FOLDERS)
 274     {
 275         HKEY hkey;
 276         LONG r;
 277
 278         /* create the pidl for This item */
 279         ret = AddToEnumList(list, _ILCreateMyComputer());
 280
 281         r = RegOpenKeyExW(HKEY_LOCAL_MACHINE, Desktop_NameSpaceW,
 282                           0, KEY_READ, &hkey);
 283         if (ret && ERROR_SUCCESS == r)
 284         {
 285             WCHAR iid[50];
 286             int i=0;
 287             BOOL moreKeys = TRUE;
 288
 289             while (ret && moreKeys)
 290             {
 291                 DWORD size;
 292
 293                 size = sizeof (iid);
 294                 r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 295                 if (ERROR_SUCCESS == r)
 296                 {
 297                     ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 298                     i++;
 299                 }
 300                 else if (ERROR_NO_MORE_ITEMS == r)
 301                     moreKeys = FALSE;
 302                 else
 303                     ret = FALSE;
 304             }
 305             RegCloseKey(hkey);
 306         }
 307     }
 308
 309     /* enumerate the elements in %windir%\desktop */
 310     SHGetSpecialFolderPathW(0, szPath, CSIDL_DESKTOPDIRECTORY, FALSE);
 311     ret = ret && CreateFolderEnumList(list, szPath, dwFlags);
 312
 313     return ret;
 314 }
 315
 316 /**************************************************************************
 317  *        ISF_Desktop_fnEnumObjects
 318  */
 319 static HRESULT WINAPI ISF_Desktop_fnEnumObjects (IShellFolder2 * iface,
 320                 HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST * ppEnumIDList)
 321 {
 322     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 323
 324     TRACE ("(%p)->(HWND=%p flags=0x%08lx pplist=%p)\n",
 325            This, hwndOwner, dwFlags, ppEnumIDList);
 326
 327     *ppEnumIDList = IEnumIDList_Constructor();
 328     if (*ppEnumIDList)
 329         CreateDesktopEnumList(*ppEnumIDList, dwFlags);
 330
 331     TRACE ("-- (%p)->(new ID List: %p)\n", This, *ppEnumIDList);
 332
 333     return *ppEnumIDList ? S_OK : E_OUTOFMEMORY;
 334 }
 335
 336 /**************************************************************************
 337  *        ISF_Desktop_fnBindToObject
 338  */
 339 static HRESULT WINAPI ISF_Desktop_fnBindToObject (IShellFolder2 * iface,
 340                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 341 {
 342     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 343     char szPath[MAX_PATH];
 344
 345     TRACE ("(%p)->(pidl=%p,%p,%s,%p)\n",
 346            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 347
 348     WideCharToMultiByte( CP_ACP, 0, This->sPathTarget, -1,
 349                          szPath, MAX_PATH, NULL, NULL );
 350     return SHELL32_BindToChild( This->pidlRoot, szPath, pidl, riid, ppvOut );
 351 }
 352
 353 /**************************************************************************
 354  *    ISF_Desktop_fnBindToStorage
 355  */
 356 static HRESULT WINAPI ISF_Desktop_fnBindToStorage (IShellFolder2 * iface,
 357                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 358 {
 359     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 360
 361     FIXME ("(%p)->(pidl=%p,%p,%s,%p) stub\n",
 362            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 363
 364     *ppvOut = NULL;
 365     return E_NOTIMPL;
 366 }
 367
 368 /**************************************************************************
 369  *     ISF_Desktop_fnCompareIDs
 370  */
 371 static HRESULT WINAPI ISF_Desktop_fnCompareIDs (IShellFolder2 * iface,
 372                         LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 373 {
 374     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 375     int nReturn;
 376
 377     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 378     nReturn = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 379     TRACE ("-- %i\n", nReturn);
 380     return nReturn;
 381 }
 382
 383 /**************************************************************************
 384  *    ISF_Desktop_fnCreateViewObject
 385  */
 386 static HRESULT WINAPI ISF_Desktop_fnCreateViewObject (IShellFolder2 * iface,
 387                               HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 388 {
 389     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 390     LPSHELLVIEW pShellView;
 391     HRESULT hr = E_INVALIDARG;
 392
 393     TRACE ("(%p)->(hwnd=%p,%s,%p)\n",
 394            This, hwndOwner, shdebugstr_guid (riid), ppvOut);
 395
 396     if (!ppvOut)
 397         return hr;
 398
 399     *ppvOut = NULL;
 400
 401     if (IsEqualIID (riid, &IID_IDropTarget))
 402     {
 403         WARN ("IDropTarget not implemented\n");
 404         hr = E_NOTIMPL;
 405     }
 406     else if (IsEqualIID (riid, &IID_IContextMenu))
 407     {
 408         WARN ("IContextMenu not implemented\n");
 409         hr = E_NOTIMPL;
 410     }
 411     else if (IsEqualIID (riid, &IID_IShellView))
 412     {
 413         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 414         if (pShellView)
 415         {
 416             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 417             IShellView_Release (pShellView);
 418         }
 419     }
 420     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 421     return hr;
 422 }
 423
 424 /**************************************************************************
 425  *  ISF_Desktop_fnGetAttributesOf
 426  */
 427 static HRESULT WINAPI ISF_Desktop_fnGetAttributesOf (IShellFolder2 * iface,
 428                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 429 {
 430     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 431     HRESULT hr = S_OK;
 432
 433     TRACE ("(%p)->(cidl=%d apidl=%p mask=0x%08lx)\n",
 434            This, cidl, apidl, *rgfInOut);
 435
 436     if (!cidl || !apidl || !rgfInOut)
 437         return E_INVALIDARG;
 438
 439     if (*rgfInOut == 0)
 440         *rgfInOut = ~0;
 441
 442     while (cidl > 0 && *apidl)
 443     {
 444         pdump (*apidl);
 445         SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 446         apidl++;
 447         cidl--;
 448     }
 449
 450     TRACE ("-- result=0x%08lx\n", *rgfInOut);
 451
 452     return hr;
 453 }
 454
 455 /**************************************************************************
 456  *    ISF_Desktop_fnGetUIObjectOf
 457  *
 458  * PARAMETERS
 459  *  HWND           hwndOwner, //[in ] Parent window for any output
 460  *  UINT           cidl,      //[in ] array size
 461  *  LPCITEMIDLIST* apidl,     //[in ] simple pidl array
 462  *  REFIID         riid,      //[in ] Requested Interface
 463  *  UINT*          prgfInOut, //[   ] reserved
 464  *  LPVOID*        ppvObject) //[out] Resulting Interface
 465  *
 466  */
 467 static HRESULT WINAPI ISF_Desktop_fnGetUIObjectOf (IShellFolder2 * iface,
 468                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl,
 469                 REFIID riid, UINT * prgfInOut, LPVOID * ppvOut)
 470 {
 471     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 472
 473     LPITEMIDLIST pidl;
 474     IUnknown *pObj = NULL;
 475     HRESULT hr = E_INVALIDARG;
 476
 477     TRACE ("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n",
 478        This, hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 479
 480     if (!ppvOut)
 481         return hr;
 482
 483     *ppvOut = NULL;
 484
 485     if (IsEqualIID (riid, &IID_IContextMenu))
 486     {
 487         if (cidl > 0)
 488             pObj = (LPUNKNOWN) ISvItemCm_Constructor( (IShellFolder *) iface, This->pidlRoot, apidl, cidl);
 489         else
 490             pObj = (LPUNKNOWN) ISvBgCm_Constructor( (IShellFolder *) iface, TRUE);
 491         hr = S_OK;
 492     }
 493     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 494     {
 495         pObj = (LPUNKNOWN) IDataObject_Constructor( hwndOwner,
 496                                                   This->pidlRoot, apidl, cidl);
 497         hr = S_OK;
 498     }
 499     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 500     {
 501         pidl = ILCombine (This->pidlRoot, apidl[0]);
 502         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 503         SHFree (pidl);
 504         hr = S_OK;
 505     }
 506     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 507     {
 508         pidl = ILCombine (This->pidlRoot, apidl[0]);
 509         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 510         SHFree (pidl);
 511         hr = S_OK;
 512     }
 513     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 514     {
 515         hr = IShellFolder_QueryInterface (iface,
 516                                           &IID_IDropTarget, (LPVOID *) & pObj);
 517     }
 518     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 519               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 520     {
 521         pidl = ILCombine (This->pidlRoot, apidl[0]);
 522         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*)&pObj);
 523         SHFree (pidl);
 524     }
 525     else
 526         hr = E_NOINTERFACE;
 527
 528     if (SUCCEEDED(hr) && !pObj)
 529         hr = E_OUTOFMEMORY;
 530
 531     *ppvOut = pObj;
 532     TRACE ("(%p)->hr=0x%08lx\n", This, hr);
 533     return hr;
 534 }
 535
 536 /**************************************************************************
 537  *    ISF_Desktop_fnGetDisplayNameOf
 538  *
 539  * NOTES
 540  *    special case: pidl = null gives desktop-name back
 541  */
 542 static HRESULT WINAPI ISF_Desktop_fnGetDisplayNameOf (IShellFolder2 * iface,
 543                 LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 544 {
 545     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 546     CHAR szPath[MAX_PATH];
 547     GUID const *clsid;
 548     HRESULT hr = S_OK;
 549
 550     *szPath = '\0';
 551
 552     TRACE ("(%p)->(pidl=%p,0x%08lx,%p)\n", This, pidl, dwFlags, strRet);
 553     pdump (pidl);
 554
 555     if (!strRet)
 556         return E_INVALIDARG;
 557
 558     if (_ILIsDesktop (pidl))
 559     {
 560         if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 561             (GET_SHGDN_FOR (dwFlags) == SHGDN_FORPARSING))
 562         {
 563             WideCharToMultiByte( CP_ACP, 0, This->sPathTarget, -1,
 564                                  szPath, MAX_PATH, NULL, NULL );
 565         }
 566         else
 567             HCR_GetClassNameA(&CLSID_ShellDesktop, szPath, MAX_PATH);
 568     }
 569     else if (_ILIsPidlSimple (pidl))
 570     {
 571         if ((clsid = _ILGetGUIDPointer (pidl)))
 572         {
 573             if (GET_SHGDN_FOR (dwFlags) == SHGDN_FORPARSING)
 574             {
 575                 int bWantsForParsing;
 576
 577                 /*
 578                  * We can only get a filesystem path from a shellfolder if the
 579                  *  value WantsFORPARSING in CLSID\\{...}\\shellfolder exists.
 580                  *
 581                  * Exception: The MyComputer folder doesn't have this key,
 582                  *   but any other filesystem backed folder it needs it.
 583                  */
 584                 if (IsEqualIID (clsid, &CLSID_MyComputer))
 585                 {
 586                     bWantsForParsing = 1;
 587                 }
 588                 else
 589                 {
 590                     /* get the "WantsFORPARSING" flag from the registry */
 591                     static const WCHAR clsidW[] =
 592                      { 'C','L','S','I','D','\\',0 };
 593                     static const WCHAR shellfolderW[] =
 594                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 595                     static const WCHAR wantsForParsingW[] =
 596                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 597                      'g',0 };
 598                     WCHAR szRegPath[100];
 599                     LONG r;
 600
 601                     lstrcpyW (szRegPath, clsidW);
 602                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 603                     lstrcatW (szRegPath, shellfolderW);
 604                     r = SHGetValueW(HKEY_CLASSES_ROOT, szRegPath,
 605                                     wantsForParsingW, NULL, NULL, NULL);
 606                     if (r == ERROR_SUCCESS)
 607                         bWantsForParsing = TRUE;
 608                     else
 609                         bWantsForParsing = FALSE;
 610                 }
 611
 612                 if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 613                      bWantsForParsing)
 614                 {
 615                     /*
 616                      * we need the filesystem path to the destination folder.
 617                      * Only the folder itself can know it
 618                      */
 619                     hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 620                                                         szPath, MAX_PATH);
 621                 }
 622                 else
 623                 {
 624                     /* parsing name like ::{...} */
 625                     lstrcpyA (szPath, "::");
 626                     SHELL32_GUIDToStringA (clsid, &szPath[2]);
 627                 }
 628             }
 629             else
 630             {
 631                 /* user friendly name */
 632                 HCR_GetClassNameA (clsid, szPath, MAX_PATH);
 633             }
 634         }
 635         else
 636         {
 637             /* file system folder */
 638             _ILSimpleGetText (pidl, szPath, MAX_PATH);
 639
 640             if (!_ILIsFolder(pidl))
 641             SHELL_FS_ProcessDisplayFilename(szPath, dwFlags);
 642         }
 643     }
 644     else
 645     {
 646         /* a complex pidl, let the subfolder do the work */
 647         hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags, szPath, MAX_PATH);
 648     }
 649
 650     if (SUCCEEDED (hr))
 651     {
 652         strRet->uType = STRRET_CSTR;
 653         lstrcpynA (strRet->u.cStr, szPath, MAX_PATH);
 654     }
 655
 656     TRACE ("-- (%p)->(%s,0x%08lx)\n", This, szPath, hr);
 657     return hr;
 658 }
 659
 660 /**************************************************************************
 661  *  ISF_Desktop_fnSetNameOf
 662  *  Changes the name of a file object or subfolder, possibly changing its item
 663  *  identifier in the process.
 664  *
 665  * PARAMETERS
 666  *  HWND          hwndOwner,  //[in ] Owner window for output
 667  *  LPCITEMIDLIST pidl,       //[in ] simple pidl of item to change
 668  *  LPCOLESTR     lpszName,   //[in ] the items new display name
 669  *  DWORD         dwFlags,    //[in ] SHGNO formatting flags
 670  *  LPITEMIDLIST* ppidlOut)   //[out] simple pidl returned
 671  */
 672 static HRESULT WINAPI ISF_Desktop_fnSetNameOf (IShellFolder2 * iface,
 673                 HWND hwndOwner, LPCITEMIDLIST pidl,    /* simple pidl */
 674                 LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 675 {
 676     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 677
 678     FIXME ("(%p)->(%p,pidl=%p,%s,%lu,%p)\n", This, hwndOwner, pidl,
 679            debugstr_w (lpName), dwFlags, pPidlOut);
 680
 681     return E_FAIL;
 682 }
 683
 684 static HRESULT WINAPI ISF_Desktop_fnGetDefaultSearchGUID(IShellFolder2 *iface,
 685                 GUID * pguid)
 686 {
 687     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 688
 689     FIXME ("(%p)\n", This);
 690     return E_NOTIMPL;
 691 }
 692
 693 static HRESULT WINAPI ISF_Desktop_fnEnumSearches (IShellFolder2 *iface,
 694                 IEnumExtraSearch ** ppenum)
 695 {
 696     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 697     FIXME ("(%p)\n", This);
 698     return E_NOTIMPL;
 699 }
 700
 701 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumn (IShellFolder2 * iface,
 702                 DWORD dwRes, ULONG * pSort, ULONG * pDisplay)
 703 {
 704     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 705
 706     TRACE ("(%p)\n", This);
 707
 708     if (pSort)
 709         *pSort = 0;
 710     if (pDisplay)
 711         *pDisplay = 0;
 712
 713     return S_OK;
 714 }
 715 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumnState (
 716                 IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 717 {
 718     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 719
 720     TRACE ("(%p)\n", This);
 721
 722     if (!pcsFlags || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 723     return E_INVALIDARG;
 724
 725     *pcsFlags = DesktopSFHeader[iColumn].pcsFlags;
 726
 727     return S_OK;
 728 }
 729
 730 static HRESULT WINAPI ISF_Desktop_fnGetDetailsEx (IShellFolder2 * iface,
 731                 LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 732 {
 733     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 734     FIXME ("(%p)\n", This);
 735
 736     return E_NOTIMPL;
 737 }
 738
 739 static HRESULT WINAPI ISF_Desktop_fnGetDetailsOf (IShellFolder2 * iface,
 740                 LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS * psd)
 741 {
 742     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 743
 744     HRESULT hr = E_FAIL;
 745
 746     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 747
 748     if (!psd || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 749         return E_INVALIDARG;
 750
 751     if (!pidl)
 752     {
 753         psd->fmt = DesktopSFHeader[iColumn].fmt;
 754         psd->cxChar = DesktopSFHeader[iColumn].cxChar;
 755         psd->str.uType = STRRET_CSTR;
 756         LoadStringA (shell32_hInstance, DesktopSFHeader[iColumn].colnameid,
 757                      psd->str.u.cStr, MAX_PATH);
 758         return S_OK;
 759     }
 760
 761     /* the data from the pidl */
 762     switch (iColumn)
 763     {
 764     case 0:        /* name */
 765         hr = IShellFolder_GetDisplayNameOf(iface, pidl,
 766                    SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 767         break;
 768     case 1:        /* size */
 769         _ILGetFileSize (pidl, psd->str.u.cStr, MAX_PATH);
 770         break;
 771     case 2:        /* type */
 772         _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 773         break;
 774     case 3:        /* date */
 775         _ILGetFileDate (pidl, psd->str.u.cStr, MAX_PATH);
 776         break;
 777     case 4:        /* attributes */
 778         _ILGetFileAttributes (pidl, psd->str.u.cStr, MAX_PATH);
 779         break;
 780     }
 781     hr = S_OK;
 782     psd->str.uType = STRRET_CSTR;
 783
 784     return hr;
 785 }
 786
 787 static HRESULT WINAPI ISF_Desktop_fnMapColumnToSCID (
 788                 IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 789 {
 790     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 791     FIXME ("(%p)\n", This);
 792     return E_NOTIMPL;
 793 }
 794
 795 static IShellFolder2Vtbl vt_MCFldr_ShellFolder2 =
 796 {
 797     ISF_Desktop_fnQueryInterface,
 798     ISF_Desktop_fnAddRef,
 799     ISF_Desktop_fnRelease,
 800     ISF_Desktop_fnParseDisplayName,
 801     ISF_Desktop_fnEnumObjects,
 802     ISF_Desktop_fnBindToObject,
 803     ISF_Desktop_fnBindToStorage,
 804     ISF_Desktop_fnCompareIDs,
 805     ISF_Desktop_fnCreateViewObject,
 806     ISF_Desktop_fnGetAttributesOf,
 807     ISF_Desktop_fnGetUIObjectOf,
 808     ISF_Desktop_fnGetDisplayNameOf,
 809     ISF_Desktop_fnSetNameOf,
 810     /* ShellFolder2 */
 811     ISF_Desktop_fnGetDefaultSearchGUID,
 812     ISF_Desktop_fnEnumSearches,
 813     ISF_Desktop_fnGetDefaultColumn,
 814     ISF_Desktop_fnGetDefaultColumnState,
 815     ISF_Desktop_fnGetDetailsEx,
 816     ISF_Desktop_fnGetDetailsOf,
 817     ISF_Desktop_fnMapColumnToSCID
 818 };
 819
 820 /**************************************************************************
 821  *    ISF_Desktop_Constructor
 822  */
 823 HRESULT WINAPI ISF_Desktop_Constructor (
 824                 IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
 825 {
 826     IGenericSFImpl *sf;
 827     WCHAR szMyPath[MAX_PATH];
 828     HRESULT r;
 829
 830     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
 831
 832     if (!ppv)
 833         return E_POINTER;
 834     if (pUnkOuter)
 835         return CLASS_E_NOAGGREGATION;
 836
 837     if (!SHGetSpecialFolderPathW( 0, szMyPath, CSIDL_DESKTOPDIRECTORY, TRUE ))
 838         return E_UNEXPECTED;
 839
 840     sf = LocalAlloc( LMEM_ZEROINIT, sizeof (IGenericSFImpl) );
 841     if (!sf)
 842         return E_OUTOFMEMORY;
 843
 844     sf->ref = 0;
 845     sf->lpVtbl = &vt_MCFldr_ShellFolder2;
 846     sf->pidlRoot = _ILCreateDesktop();    /* my qualified pidl */
 847     sf->sPathTarget = SHAlloc( (lstrlenW(szMyPath) + 1)*sizeof(WCHAR) );
 848     lstrcpyW( sf->sPathTarget, szMyPath );
 849
 850     r = IUnknown_QueryInterface( _IUnknown_(sf), riid, ppv );
 851     if (!SUCCEEDED (r))
 852     {
 853         IUnknown_Release( _IUnknown_(sf) );
 854         return r;
 855     }
 856
 857     TRACE ("--(%p)\n", sf);
 858     return S_OK;
 859 }