reactos/lib/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     const IShellFolder2Vtbl *lpVtbl;
  64     LONG 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     UINT cfShellIDList;        /* clipboardformat for IDropTarget */
  73     BOOL fAcceptFmt;        /* flag for pending Drop */
  74 } IGenericSFImpl;
  75
  76 #define _IUnknown_(This)    (IShellFolder*)&(This->lpVtbl)
  77 #define _IShellFolder_(This)    (IShellFolder*)&(This->lpVtbl)
  78
  79 static shvheader DesktopSFHeader[] = {
  80     {IDS_SHV_COLUMN1, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 15},
  81     {IDS_SHV_COLUMN2, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  82     {IDS_SHV_COLUMN3, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  83     {IDS_SHV_COLUMN4, SHCOLSTATE_TYPE_DATE | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 12},
  84     {IDS_SHV_COLUMN5, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 5}
  85 };
  86
  87 #define DESKTOPSHELLVIEWCOLUMNS 5
  88
  89 /**************************************************************************
  90  *    ISF_Desktop_fnQueryInterface
  91  *
  92  * NOTES supports not IPersist/IPersistFolder
  93  */
  94 static HRESULT WINAPI ISF_Desktop_fnQueryInterface(
  95                 IShellFolder2 * iface, REFIID riid, LPVOID * ppvObj)
  96 {
  97     IGenericSFImpl *This = (IGenericSFImpl *)iface;
  98
  99     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
 100
 101     *ppvObj = NULL;
 102
 103     if (IsEqualIID (riid, &IID_IUnknown) ||
 104         IsEqualIID (riid, &IID_IShellFolder) ||
 105         IsEqualIID (riid, &IID_IShellFolder2))
 106     {
 107         *ppvObj = This;
 108     }
 109
 110     if (*ppvObj)
 111     {
 112         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 113         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 114         return S_OK;
 115     }
 116     TRACE ("-- Interface: E_NOINTERFACE\n");
 117     return E_NOINTERFACE;
 118 }
 119
 120 static ULONG WINAPI ISF_Desktop_fnAddRef (IShellFolder2 * iface)
 121 {
 122     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 123     ULONG refCount = InterlockedIncrement(&This->ref);
 124
 125     TRACE ("(%p)->(count=%lu)\n", This, refCount - 1);
 126
 127     return refCount;
 128 }
 129
 130 static ULONG WINAPI ISF_Desktop_fnRelease (IShellFolder2 * iface)
 131 {
 132     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 133     ULONG refCount = InterlockedDecrement(&This->ref);
 134
 135     TRACE ("(%p)->(count=%lu)\n", This, refCount + 1);
 136
 137     if (!refCount)
 138     {
 139         TRACE ("-- destroying IShellFolder(%p)\n", This);
 140         if (This->pidlRoot)
 141             SHFree (This->pidlRoot);
 142         if (This->sPathTarget)
 143             SHFree (This->sPathTarget);
 144         LocalFree ((HLOCAL) This);
 145         return 0;
 146     }
 147     return refCount;
 148 }
 149
 150 /**************************************************************************
 151  *    ISF_Desktop_fnParseDisplayName
 152  *
 153  * NOTES
 154  *    "::{20D04FE0-3AEA-1069-A2D8-08002B30309D}" and "" binds
 155  *    to MyComputer
 156  */
 157 static HRESULT WINAPI ISF_Desktop_fnParseDisplayName (IShellFolder2 * iface,
 158                 HWND hwndOwner, LPBC pbc, LPOLESTR lpszDisplayName,
 159                 DWORD * pchEaten, LPITEMIDLIST * ppidl, DWORD * pdwAttributes)
 160 {
 161     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 162     WCHAR szElement[MAX_PATH];
 163     LPCWSTR szNext = NULL;
 164     LPITEMIDLIST pidlTemp = NULL;
 165     HRESULT hr = S_OK;
 166     CLSID clsid;
 167
 168     TRACE ("(%p)->(HWND=%p,%p,%p=%s,%p,pidl=%p,%p)\n",
 169            This, hwndOwner, pbc, lpszDisplayName, debugstr_w(lpszDisplayName),
 170            pchEaten, ppidl, pdwAttributes);
 171
 172     if (!lpszDisplayName || !ppidl)
 173         return E_INVALIDARG;
 174
 175     *ppidl = 0;
 176
 177     if (pchEaten)
 178         *pchEaten = 0;        /* strange but like the original */
 179
 180     if (lpszDisplayName[0] == ':' && lpszDisplayName[1] == ':')
 181     {
 182         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 183         TRACE ("-- element: %s\n", debugstr_w (szElement));
 184         SHCLSIDFromStringW (szElement + 2, &clsid);
 185         pidlTemp = _ILCreateGuid (PT_GUID, &clsid);
 186     }
 187     else if (PathGetDriveNumberW (lpszDisplayName) >= 0)
 188     {
 189         /* it's a filesystem path with a drive. Let MyComputer parse it */
 190         pidlTemp = _ILCreateMyComputer ();
 191         szNext = lpszDisplayName;
 192     }
 193     else if (PathIsUNCW(lpszDisplayName))
 194     {
 195         pidlTemp = _ILCreateNetwork();
 196         szNext = lpszDisplayName;
 197     }
 198     else if( (pidlTemp = SHELL32_CreatePidlFromBindCtx(pbc, lpszDisplayName)) )
 199     {
 200         *ppidl = pidlTemp;
 201         return S_OK;
 202     }
 203     else
 204     {
 205         /* it's a filesystem path on the desktop. Let a FSFolder parse it */
 206
 207         if (*lpszDisplayName)
 208         {
 209             WCHAR szPath[MAX_PATH];
 210             LPWSTR pathPtr;
 211
 212             /* build a complete path to create a simple pidl */
 213             lstrcpynW(szPath, This->sPathTarget, MAX_PATH);
 214             pathPtr = PathAddBackslashW(szPath);
 215             if (pathPtr)
 216             {
 217                 lstrcpynW(pathPtr, lpszDisplayName, MAX_PATH - (pathPtr - szPath));
 218                 hr = _ILCreateFromPathW(szPath, &pidlTemp);
 219             }
 220             else
 221             {
 222                 /* should never reach here, but for completeness */
 223                 hr = HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
 224             }
 225         }
 226         else
 227             pidlTemp = _ILCreateMyComputer();
 228
 229         szNext = NULL;
 230     }
 231
 232     if (SUCCEEDED(hr) && pidlTemp)
 233     {
 234         if (szNext && *szNext)
 235         {
 236             hr = SHELL32_ParseNextElement(iface, hwndOwner, pbc,
 237                     &pidlTemp, (LPOLESTR) szNext, pchEaten, pdwAttributes);
 238         }
 239         else
 240         {
 241             if (pdwAttributes && *pdwAttributes)
 242                 hr = SHELL32_GetItemAttributes(_IShellFolder_ (This),
 243                                                pidlTemp, pdwAttributes);
 244         }
 245     }
 246
 247     *ppidl = pidlTemp;
 248
 249     TRACE ("(%p)->(-- ret=0x%08lx)\n", This, hr);
 250
 251     return hr;
 252 }
 253
 254 /**************************************************************************
 255  *  CreateDesktopEnumList()
 256  */
 257 static const WCHAR Desktop_NameSpaceW[] = { 'S','O','F','T','W','A','R','E',
 258  '\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 259  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','E','x','p','l',
 260  'o','r','e','r','\\','D','e','s','k','t','o','p','\\','N','a','m','e','s','p',
 261  'a','c','e','\0' };
 262
 263 static BOOL CreateDesktopEnumList(IEnumIDList *list, DWORD dwFlags)
 264 {
 265     BOOL ret = TRUE;
 266     WCHAR szPath[MAX_PATH];
 267
 268     TRACE("(%p)->(flags=0x%08lx)\n", list, dwFlags);
 269
 270     /* enumerate the root folders */
 271     if (dwFlags & SHCONTF_FOLDERS)
 272     {
 273         HKEY hkey;
 274         UINT i;
 275
 276         /* create the pidl for This item */
 277         ret = AddToEnumList(list, _ILCreateMyComputer());
 278
 279         for (i=0; i<2; i++) {
 280             if (ret && !RegOpenKeyExW(i == 0 ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER,
 281                                       Desktop_NameSpaceW, 0, KEY_READ, &hkey))
 282             {
 283                 WCHAR iid[50];
 284                 int i=0;
 285
 286                 while (ret)
 287                 {
 288                     DWORD size;
 289                     LONG r;
 290
 291                     size = sizeof (iid);
 292                     r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 293                     if (ERROR_SUCCESS == r)
 294                     {
 295                         ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 296                         i++;
 297                     }
 298                     else if (ERROR_NO_MORE_ITEMS == r)
 299                         break;
 300                     else
 301                         ret = FALSE;
 302                 }
 303                 RegCloseKey(hkey);
 304             }
 305         }
 306     }
 307
 308     /* enumerate the elements in %windir%\desktop */
 309     SHGetSpecialFolderPathW(0, szPath, CSIDL_DESKTOPDIRECTORY, FALSE);
 310     ret = ret && CreateFolderEnumList(list, szPath, dwFlags);
 311
 312     return ret;
 313 }
 314
 315 /**************************************************************************
 316  *        ISF_Desktop_fnEnumObjects
 317  */
 318 static HRESULT WINAPI ISF_Desktop_fnEnumObjects (IShellFolder2 * iface,
 319                 HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST * ppEnumIDList)
 320 {
 321     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 322
 323     TRACE ("(%p)->(HWND=%p flags=0x%08lx pplist=%p)\n",
 324            This, hwndOwner, dwFlags, ppEnumIDList);
 325
 326     *ppEnumIDList = IEnumIDList_Constructor();
 327     if (*ppEnumIDList)
 328         CreateDesktopEnumList(*ppEnumIDList, dwFlags);
 329
 330     TRACE ("-- (%p)->(new ID List: %p)\n", This, *ppEnumIDList);
 331
 332     return *ppEnumIDList ? S_OK : E_OUTOFMEMORY;
 333 }
 334
 335 /**************************************************************************
 336  *        ISF_Desktop_fnBindToObject
 337  */
 338 static HRESULT WINAPI ISF_Desktop_fnBindToObject (IShellFolder2 * iface,
 339                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 340 {
 341     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 342
 343     TRACE ("(%p)->(pidl=%p,%p,%s,%p)\n",
 344            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 345
 346     return SHELL32_BindToChild( This->pidlRoot, This->sPathTarget, pidl, riid, ppvOut );
 347 }
 348
 349 /**************************************************************************
 350  *    ISF_Desktop_fnBindToStorage
 351  */
 352 static HRESULT WINAPI ISF_Desktop_fnBindToStorage (IShellFolder2 * iface,
 353                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 354 {
 355     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 356
 357     FIXME ("(%p)->(pidl=%p,%p,%s,%p) stub\n",
 358            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 359
 360     *ppvOut = NULL;
 361     return E_NOTIMPL;
 362 }
 363
 364 /**************************************************************************
 365  *     ISF_Desktop_fnCompareIDs
 366  */
 367 static HRESULT WINAPI ISF_Desktop_fnCompareIDs (IShellFolder2 * iface,
 368                         LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 369 {
 370     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 371     int nReturn;
 372
 373     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 374     nReturn = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 375     TRACE ("-- %i\n", nReturn);
 376     return nReturn;
 377 }
 378
 379 /**************************************************************************
 380  *    ISF_Desktop_fnCreateViewObject
 381  */
 382 static HRESULT WINAPI ISF_Desktop_fnCreateViewObject (IShellFolder2 * iface,
 383                               HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 384 {
 385     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 386     LPSHELLVIEW pShellView;
 387     HRESULT hr = E_INVALIDARG;
 388
 389     TRACE ("(%p)->(hwnd=%p,%s,%p)\n",
 390            This, hwndOwner, shdebugstr_guid (riid), ppvOut);
 391
 392     if (!ppvOut)
 393         return hr;
 394
 395     *ppvOut = NULL;
 396
 397     if (IsEqualIID (riid, &IID_IDropTarget))
 398     {
 399         WARN ("IDropTarget not implemented\n");
 400         hr = E_NOTIMPL;
 401     }
 402     else if (IsEqualIID (riid, &IID_IContextMenu))
 403     {
 404         WARN ("IContextMenu not implemented\n");
 405         hr = E_NOTIMPL;
 406     }
 407     else if (IsEqualIID (riid, &IID_IShellView))
 408     {
 409         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 410         if (pShellView)
 411         {
 412             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 413             IShellView_Release (pShellView);
 414         }
 415     }
 416     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 417     return hr;
 418 }
 419
 420 /**************************************************************************
 421  *  ISF_Desktop_fnGetAttributesOf
 422  */
 423 static HRESULT WINAPI ISF_Desktop_fnGetAttributesOf (IShellFolder2 * iface,
 424                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 425 {
 426     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 427     HRESULT hr = S_OK;
 428     static const DWORD dwDesktopAttributes =
 429         SFGAO_STORAGE | SFGAO_HASPROPSHEET | SFGAO_STORAGEANCESTOR |
 430         SFGAO_FILESYSANCESTOR | SFGAO_FOLDER | SFGAO_FILESYSTEM | SFGAO_HASSUBFOLDER;
 431     static const DWORD dwMyComputerAttributes =
 432         SFGAO_CANRENAME | SFGAO_CANDELETE | SFGAO_HASPROPSHEET |
 433         SFGAO_DROPTARGET | SFGAO_FILESYSANCESTOR | SFGAO_FOLDER | SFGAO_HASSUBFOLDER;
 434
 435     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08lx))\n",
 436            This, cidl, apidl, rgfInOut, rgfInOut ? *rgfInOut : 0);
 437
 438     if (!rgfInOut)
 439         return E_INVALIDARG;
 440     if (cidl && !apidl)
 441         return E_INVALIDARG;
 442
 443     if (*rgfInOut == 0)
 444         *rgfInOut = ~0;
 445
 446     if(cidl == 0) {
 447         *rgfInOut &= dwDesktopAttributes;
 448     } else {
 449         while (cidl > 0 && *apidl) {
 450             pdump (*apidl);
 451             if (_ILIsDesktop(*apidl)) {
 452                 *rgfInOut &= dwDesktopAttributes;
 453             } else if (_ILIsMyComputer(*apidl)) {
 454                 *rgfInOut &= dwMyComputerAttributes;
 455             } else {
 456                 SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 457             }
 458             apidl++;
 459             cidl--;
 460         }
 461     }
 462     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 463     *rgfInOut &= ~SFGAO_VALIDATE;
 464
 465     TRACE ("-- result=0x%08lx\n", *rgfInOut);
 466
 467     return hr;
 468 }
 469
 470 /**************************************************************************
 471  *    ISF_Desktop_fnGetUIObjectOf
 472  *
 473  * PARAMETERS
 474  *  HWND           hwndOwner, //[in ] Parent window for any output
 475  *  UINT           cidl,      //[in ] array size
 476  *  LPCITEMIDLIST* apidl,     //[in ] simple pidl array
 477  *  REFIID         riid,      //[in ] Requested Interface
 478  *  UINT*          prgfInOut, //[   ] reserved
 479  *  LPVOID*        ppvObject) //[out] Resulting Interface
 480  *
 481  */
 482 static HRESULT WINAPI ISF_Desktop_fnGetUIObjectOf (IShellFolder2 * iface,
 483                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl,
 484                 REFIID riid, UINT * prgfInOut, LPVOID * ppvOut)
 485 {
 486     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 487
 488     LPITEMIDLIST pidl;
 489     IUnknown *pObj = NULL;
 490     HRESULT hr = E_INVALIDARG;
 491
 492     TRACE ("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n",
 493        This, hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 494
 495     if (!ppvOut)
 496         return hr;
 497
 498     *ppvOut = NULL;
 499
 500     if (IsEqualIID (riid, &IID_IContextMenu))
 501     {
 502         if (cidl > 0)
 503             pObj = (LPUNKNOWN) ISvItemCm_Constructor( (IShellFolder *) iface, This->pidlRoot, apidl, cidl);
 504         else
 505             pObj = (LPUNKNOWN) ISvBgCm_Constructor( (IShellFolder *) iface, TRUE);
 506         hr = S_OK;
 507     }
 508     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 509     {
 510         pObj = (LPUNKNOWN) IDataObject_Constructor( hwndOwner,
 511                                                   This->pidlRoot, apidl, cidl);
 512         hr = S_OK;
 513     }
 514     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 515     {
 516         pidl = ILCombine (This->pidlRoot, apidl[0]);
 517         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 518         SHFree (pidl);
 519         hr = S_OK;
 520     }
 521     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 522     {
 523         pidl = ILCombine (This->pidlRoot, apidl[0]);
 524         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 525         SHFree (pidl);
 526         hr = S_OK;
 527     }
 528     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 529     {
 530         hr = IShellFolder_QueryInterface (iface,
 531                                           &IID_IDropTarget, (LPVOID *) & pObj);
 532     }
 533     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 534               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 535     {
 536         pidl = ILCombine (This->pidlRoot, apidl[0]);
 537         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*)&pObj);
 538         SHFree (pidl);
 539     }
 540     else
 541         hr = E_NOINTERFACE;
 542
 543     if (SUCCEEDED(hr) && !pObj)
 544         hr = E_OUTOFMEMORY;
 545
 546     *ppvOut = pObj;
 547     TRACE ("(%p)->hr=0x%08lx\n", This, hr);
 548     return hr;
 549 }
 550
 551 /**************************************************************************
 552  *    ISF_Desktop_fnGetDisplayNameOf
 553  *
 554  * NOTES
 555  *    special case: pidl = null gives desktop-name back
 556  */
 557 static HRESULT WINAPI ISF_Desktop_fnGetDisplayNameOf (IShellFolder2 * iface,
 558                 LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 559 {
 560     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 561     HRESULT hr = S_OK;
 562
 563     TRACE ("(%p)->(pidl=%p,0x%08lx,%p)\n", This, pidl, dwFlags, strRet);
 564     pdump (pidl);
 565
 566     if (!strRet)
 567         return E_INVALIDARG;
 568
 569     strRet->uType = STRRET_CSTR;
 570     if (_ILIsDesktop (pidl))
 571     {
 572         if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 573             (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING))
 574         {
 575             BOOL defCharUsed;
 576
 577             WideCharToMultiByte( CP_ACP, 0, This->sPathTarget, -1,
 578                                  strRet->u.cStr, MAX_PATH, NULL, &defCharUsed );
 579             if (defCharUsed)
 580             {
 581                 strRet->u.pOleStr = SHAlloc((lstrlenW(This->sPathTarget)+1) *
 582                  sizeof(WCHAR));
 583                 if (!strRet->u.pOleStr)
 584                     hr = E_OUTOFMEMORY;
 585                 else
 586                 {
 587                     strcpyW(strRet->u.pOleStr, This->sPathTarget);
 588                     strRet->uType = STRRET_WSTR;
 589                 }
 590             }
 591         }
 592         else
 593         {
 594             HCR_GetClassNameA(&CLSID_ShellDesktop, strRet->u.cStr, MAX_PATH);
 595         }
 596     }
 597     else if (_ILIsPidlSimple (pidl))
 598     {
 599         GUID const *clsid;
 600
 601         if ((clsid = _ILGetGUIDPointer (pidl)))
 602         {
 603             if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 604             {
 605                 int bWantsForParsing;
 606
 607                 /*
 608                  * We can only get a filesystem path from a shellfolder if the
 609                  *  value WantsFORPARSING in CLSID\\{...}\\shellfolder exists.
 610                  *
 611                  * Exception: The MyComputer folder doesn't have this key,
 612                  *   but any other filesystem backed folder it needs it.
 613                  */
 614                 if (IsEqualIID (clsid, &CLSID_MyComputer))
 615                 {
 616                     bWantsForParsing = TRUE;
 617                 }
 618                 else
 619                 {
 620                     /* get the "WantsFORPARSING" flag from the registry */
 621                     static const WCHAR clsidW[] =
 622                      { 'C','L','S','I','D','\\',0 };
 623                     static const WCHAR shellfolderW[] =
 624                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 625                     static const WCHAR wantsForParsingW[] =
 626                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 627                      'g',0 };
 628                     WCHAR szRegPath[100];
 629                     LONG r;
 630
 631                     lstrcpyW (szRegPath, clsidW);
 632                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 633                     lstrcatW (szRegPath, shellfolderW);
 634                     r = SHGetValueW(HKEY_CLASSES_ROOT, szRegPath,
 635                                     wantsForParsingW, NULL, NULL, NULL);
 636                     if (r == ERROR_SUCCESS)
 637                         bWantsForParsing = TRUE;
 638                     else
 639                         bWantsForParsing = FALSE;
 640                 }
 641
 642                 if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 643                      bWantsForParsing)
 644                 {
 645                     /*
 646                      * we need the filesystem path to the destination folder.
 647                      * Only the folder itself can know it
 648                      */
 649                     hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 650                                                         strRet->u.cStr,
 651                                                         MAX_PATH);
 652                 }
 653                 else
 654                 {
 655                     /* parsing name like ::{...} */
 656                     lstrcpyA (strRet->u.cStr, "::");
 657                     SHELL32_GUIDToStringA (clsid, &strRet->u.cStr[2]);
 658                 }
 659             }
 660             else
 661             {
 662                 /* user friendly name */
 663                 HCR_GetClassNameA (clsid, strRet->u.cStr, MAX_PATH);
 664             }
 665         }
 666         else
 667         {
 668             int cLen = 0;
 669
 670             /* file system folder or file rooted at the desktop */
 671             if ((GET_SHGDN_FOR(dwFlags) == SHGDN_FORPARSING) &&
 672                 (GET_SHGDN_RELATION(dwFlags) != SHGDN_INFOLDER))
 673             {
 674                 WideCharToMultiByte(CP_ACP, 0, This->sPathTarget, -1, strRet->u.cStr, MAX_PATH,
 675                                     NULL, NULL);
 676                 PathAddBackslashA(strRet->u.cStr);
 677                 cLen = lstrlenA(strRet->u.cStr);
 678             }
 679
 680             _ILSimpleGetText (pidl, strRet->u.cStr + cLen, MAX_PATH - cLen);
 681
 682             if (!_ILIsFolder(pidl))
 683                 SHELL_FS_ProcessDisplayFilename(strRet->u.cStr, dwFlags);
 684         }
 685     }
 686     else
 687     {
 688         /* a complex pidl, let the subfolder do the work */
 689         hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 690          strRet->u.cStr, MAX_PATH);
 691     }
 692
 693     TRACE ("-- (%p)->(%s,0x%08lx)\n", This,
 694      strRet->uType == STRRET_CSTR ? strRet->u.cStr :
 695      debugstr_w(strRet->u.pOleStr), hr);
 696     return hr;
 697 }
 698
 699 /**************************************************************************
 700  *  ISF_Desktop_fnSetNameOf
 701  *  Changes the name of a file object or subfolder, possibly changing its item
 702  *  identifier in the process.
 703  *
 704  * PARAMETERS
 705  *  HWND          hwndOwner,  //[in ] Owner window for output
 706  *  LPCITEMIDLIST pidl,       //[in ] simple pidl of item to change
 707  *  LPCOLESTR     lpszName,   //[in ] the items new display name
 708  *  DWORD         dwFlags,    //[in ] SHGNO formatting flags
 709  *  LPITEMIDLIST* ppidlOut)   //[out] simple pidl returned
 710  */
 711 static HRESULT WINAPI ISF_Desktop_fnSetNameOf (IShellFolder2 * iface,
 712                 HWND hwndOwner, LPCITEMIDLIST pidl,    /* simple pidl */
 713                 LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 714 {
 715     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 716
 717     FIXME ("(%p)->(%p,pidl=%p,%s,%lu,%p)\n", This, hwndOwner, pidl,
 718            debugstr_w (lpName), dwFlags, pPidlOut);
 719
 720     return E_FAIL;
 721 }
 722
 723 static HRESULT WINAPI ISF_Desktop_fnGetDefaultSearchGUID(IShellFolder2 *iface,
 724                 GUID * pguid)
 725 {
 726     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 727
 728     FIXME ("(%p)\n", This);
 729     return E_NOTIMPL;
 730 }
 731
 732 static HRESULT WINAPI ISF_Desktop_fnEnumSearches (IShellFolder2 *iface,
 733                 IEnumExtraSearch ** ppenum)
 734 {
 735     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 736     FIXME ("(%p)\n", This);
 737     return E_NOTIMPL;
 738 }
 739
 740 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumn (IShellFolder2 * iface,
 741                 DWORD dwRes, ULONG * pSort, ULONG * pDisplay)
 742 {
 743     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 744
 745     TRACE ("(%p)\n", This);
 746
 747     if (pSort)
 748         *pSort = 0;
 749     if (pDisplay)
 750         *pDisplay = 0;
 751
 752     return S_OK;
 753 }
 754 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumnState (
 755                 IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 756 {
 757     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 758
 759     TRACE ("(%p)\n", This);
 760
 761     if (!pcsFlags || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 762     return E_INVALIDARG;
 763
 764     *pcsFlags = DesktopSFHeader[iColumn].pcsFlags;
 765
 766     return S_OK;
 767 }
 768
 769 static HRESULT WINAPI ISF_Desktop_fnGetDetailsEx (IShellFolder2 * iface,
 770                 LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 771 {
 772     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 773     FIXME ("(%p)\n", This);
 774
 775     return E_NOTIMPL;
 776 }
 777
 778 static HRESULT WINAPI ISF_Desktop_fnGetDetailsOf (IShellFolder2 * iface,
 779                 LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS * psd)
 780 {
 781     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 782
 783     HRESULT hr = S_OK;
 784
 785     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 786
 787     if (!psd || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 788         return E_INVALIDARG;
 789
 790     if (!pidl)
 791     {
 792         psd->fmt = DesktopSFHeader[iColumn].fmt;
 793         psd->cxChar = DesktopSFHeader[iColumn].cxChar;
 794         psd->str.uType = STRRET_CSTR;
 795         LoadStringA (shell32_hInstance, DesktopSFHeader[iColumn].colnameid,
 796                      psd->str.u.cStr, MAX_PATH);
 797         return S_OK;
 798     }
 799
 800     /* the data from the pidl */
 801     psd->str.uType = STRRET_CSTR;
 802     switch (iColumn)
 803     {
 804     case 0:        /* name */
 805         hr = IShellFolder_GetDisplayNameOf(iface, pidl,
 806                    SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 807         break;
 808     case 1:        /* size */
 809         _ILGetFileSize (pidl, psd->str.u.cStr, MAX_PATH);
 810         break;
 811     case 2:        /* type */
 812         _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 813         break;
 814     case 3:        /* date */
 815         _ILGetFileDate (pidl, psd->str.u.cStr, MAX_PATH);
 816         break;
 817     case 4:        /* attributes */
 818         _ILGetFileAttributes (pidl, psd->str.u.cStr, MAX_PATH);
 819         break;
 820     }
 821
 822     return hr;
 823 }
 824
 825 static HRESULT WINAPI ISF_Desktop_fnMapColumnToSCID (
 826                 IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 827 {
 828     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 829     FIXME ("(%p)\n", This);
 830     return E_NOTIMPL;
 831 }
 832
 833 static const IShellFolder2Vtbl vt_MCFldr_ShellFolder2 =
 834 {
 835     ISF_Desktop_fnQueryInterface,
 836     ISF_Desktop_fnAddRef,
 837     ISF_Desktop_fnRelease,
 838     ISF_Desktop_fnParseDisplayName,
 839     ISF_Desktop_fnEnumObjects,
 840     ISF_Desktop_fnBindToObject,
 841     ISF_Desktop_fnBindToStorage,
 842     ISF_Desktop_fnCompareIDs,
 843     ISF_Desktop_fnCreateViewObject,
 844     ISF_Desktop_fnGetAttributesOf,
 845     ISF_Desktop_fnGetUIObjectOf,
 846     ISF_Desktop_fnGetDisplayNameOf,
 847     ISF_Desktop_fnSetNameOf,
 848     /* ShellFolder2 */
 849     ISF_Desktop_fnGetDefaultSearchGUID,
 850     ISF_Desktop_fnEnumSearches,
 851     ISF_Desktop_fnGetDefaultColumn,
 852     ISF_Desktop_fnGetDefaultColumnState,
 853     ISF_Desktop_fnGetDetailsEx,
 854     ISF_Desktop_fnGetDetailsOf,
 855     ISF_Desktop_fnMapColumnToSCID
 856 };
 857
 858 /**************************************************************************
 859  *    ISF_Desktop_Constructor
 860  */
 861 HRESULT WINAPI ISF_Desktop_Constructor (
 862                 IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
 863 {
 864     IGenericSFImpl *sf;
 865     WCHAR szMyPath[MAX_PATH];
 866     HRESULT r;
 867
 868     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
 869
 870     if (!ppv)
 871         return E_POINTER;
 872     if (pUnkOuter)
 873         return CLASS_E_NOAGGREGATION;
 874
 875     if (!SHGetSpecialFolderPathW( 0, szMyPath, CSIDL_DESKTOPDIRECTORY, TRUE ))
 876         return E_UNEXPECTED;
 877
 878     sf = LocalAlloc( LMEM_ZEROINIT, sizeof (IGenericSFImpl) );
 879     if (!sf)
 880         return E_OUTOFMEMORY;
 881
 882     sf->ref = 0;
 883     sf->lpVtbl = &vt_MCFldr_ShellFolder2;
 884     sf->pidlRoot = _ILCreateDesktop();    /* my qualified pidl */
 885     sf->sPathTarget = SHAlloc( (lstrlenW(szMyPath) + 1)*sizeof(WCHAR) );
 886     lstrcpyW( sf->sPathTarget, szMyPath );
 887
 888     r = IUnknown_QueryInterface( _IUnknown_(sf), riid, ppv );
 889     if (!SUCCEEDED (r))
 890     {
 891         IUnknown_Release( _IUnknown_(sf) );
 892         return r;
 893     }
 894
 895     TRACE ("--(%p)\n", sf);
 896     return S_OK;
 897 }