dlls/shell32/brsfolder.c

   1 /*
   2  * Copyright 1999 Juergen Schmied
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  *
  18  * FIXME:
  19  *  - many memory leaks
  20  *  - many flags unimplemented
  21  */
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #define COBJMACROS
  27 #define NONAMELESSUNION
  28 #define NONAMELESSSTRUCT
  29
  30 #include "wine/debug.h"
  31 #include "undocshell.h"
  32 #include "pidl.h"
  33 #include "shell32_main.h"
  34 #include "shellapi.h"
  35 #include "shresdef.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  38
  39 typedef struct tagbrowse_info
  40 {
  41     HWND          hWnd;
  42     HWND          hwndTreeView;
  43     LPBROWSEINFOW lpBrowseInfo;
  44     LPITEMIDLIST  pidlRet;
  45 } browse_info;
  46
  47 typedef struct tagTV_ITEMDATA
  48 {
  49    LPSHELLFOLDER lpsfParent; /* IShellFolder of the parent */
  50    LPITEMIDLIST  lpi;        /* PIDL relativ to parent */
  51    LPITEMIDLIST  lpifq;      /* Fully qualified PIDL */
  52    IEnumIDList*  pEnumIL;    /* Children iterator */
  53 } TV_ITEMDATA, *LPTV_ITEMDATA;
  54
  55 #define SUPPORTEDFLAGS (BIF_STATUSTEXT | \
  56                         BIF_BROWSEFORCOMPUTER | \
  57                         BIF_RETURNFSANCESTORS | \
  58                         BIF_RETURNONLYFSDIRS | \
  59                         BIF_BROWSEINCLUDEFILES)
  60
  61 static void FillTreeView(browse_info*, LPSHELLFOLDER,
  62                LPITEMIDLIST, HTREEITEM, IEnumIDList*);
  63 static HTREEITEM InsertTreeViewItem( browse_info*, IShellFolder *,
  64                LPCITEMIDLIST, LPCITEMIDLIST, IEnumIDList*, HTREEITEM);
  65
  66 static const WCHAR szBrowseFolderInfo[] = {
  67     '_','_','W','I','N','E','_',
  68     'B','R','S','F','O','L','D','E','R','D','L','G','_',
  69     'I','N','F','O',0
  70 };
  71
  72 static inline DWORD BrowseFlagsToSHCONTF(UINT ulFlags)
  73 {
  74     return SHCONTF_FOLDERS | (ulFlags & BIF_BROWSEINCLUDEFILES ? SHCONTF_NONFOLDERS : 0);
  75 }
  76
  77 static void browsefolder_callback( LPBROWSEINFOW lpBrowseInfo, HWND hWnd,
  78                                    UINT msg, LPARAM param )
  79 {
  80     if (!lpBrowseInfo->lpfn)
  81         return;
  82     lpBrowseInfo->lpfn( hWnd, msg, param, lpBrowseInfo->lParam );
  83 }
  84
  85 /******************************************************************************
  86  * InitializeTreeView [Internal]
  87  *
  88  * Called from WM_INITDIALOG handler.
  89  *
  90  * PARAMS
  91  *  hwndParent [I] The BrowseForFolder dialog
  92  *  root       [I] ITEMIDLIST of the root shell folder
  93  */
  94 static void InitializeTreeView( browse_info *info )
  95 {
  96     LPITEMIDLIST pidlParent, pidlChild;
  97     HIMAGELIST hImageList;
  98     HRESULT hr;
  99     IShellFolder *lpsfParent, *lpsfRoot;
 100     IEnumIDList * pEnumChildren = NULL;
 101     HTREEITEM item;
 102     DWORD flags;
 103     LPCITEMIDLIST root = info->lpBrowseInfo->pidlRoot;
 104
 105     TRACE("%p\n", info );
 106
 107     Shell_GetImageList(NULL, &hImageList);
 108
 109     if (hImageList)
 110         SendMessageW( info->hwndTreeView, TVM_SETIMAGELIST, 0, (LPARAM)hImageList );
 111
 112     /* We want to call InsertTreeViewItem down the code, in order to insert
 113      * the root item of the treeview. Due to InsertTreeViewItem's signature,
 114      * we need the following to do this:
 115      *
 116      * + An ITEMIDLIST corresponding to _the parent_ of root.
 117      * + An ITEMIDLIST, which is a relative path from root's parent to root
 118      *   (containing a single SHITEMID).
 119      * + An IShellFolder interface pointer of root's parent folder.
 120      *
 121      * If root is 'Desktop', then root's parent is also 'Desktop'.
 122      */
 123
 124     pidlParent = ILClone(root);
 125     ILRemoveLastID(pidlParent);
 126     pidlChild = ILClone(ILFindLastID(root));
 127
 128     if (_ILIsDesktop(pidlParent)) {
 129         hr = SHGetDesktopFolder(&lpsfParent);
 130     } else {
 131         IShellFolder *lpsfDesktop;
 132         hr = SHGetDesktopFolder(&lpsfDesktop);
 133         if (!SUCCEEDED(hr)) {
 134             WARN("SHGetDesktopFolder failed! hr = %08x\n", hr);
 135             return;
 136         }
 137         hr = IShellFolder_BindToObject(lpsfDesktop, pidlParent, 0, &IID_IShellFolder, (LPVOID*)&lpsfParent);
 138         IShellFolder_Release(lpsfDesktop);
 139     }
 140
 141     if (!SUCCEEDED(hr)) {
 142         WARN("Could not bind to parent shell folder! hr = %08x\n", hr);
 143         return;
 144     }
 145
 146     if (pidlChild && pidlChild->mkid.cb) {
 147         hr = IShellFolder_BindToObject(lpsfParent, pidlChild, 0, &IID_IShellFolder, (LPVOID*)&lpsfRoot);
 148     } else {
 149         lpsfRoot = lpsfParent;
 150         hr = IShellFolder_AddRef(lpsfParent);
 151     }
 152
 153     if (!SUCCEEDED(hr)) {
 154         WARN("Could not bind to root shell folder! hr = %08x\n", hr);
 155         IShellFolder_Release(lpsfParent);
 156         return;
 157     }
 158
 159     flags = BrowseFlagsToSHCONTF( info->lpBrowseInfo->ulFlags );
 160     hr = IShellFolder_EnumObjects( lpsfRoot, info->hWnd, flags, &pEnumChildren );
 161     if (!SUCCEEDED(hr)) {
 162         WARN("Could not get child iterator! hr = %08x\n", hr);
 163         IShellFolder_Release(lpsfParent);
 164         IShellFolder_Release(lpsfRoot);
 165         return;
 166     }
 167
 168     SendMessageW( info->hwndTreeView, TVM_DELETEITEM, 0, (LPARAM)TVI_ROOT );
 169     item = InsertTreeViewItem( info, lpsfParent, pidlChild,
 170                                pidlParent, pEnumChildren, TVI_ROOT );
 171     SendMessageW( info->hwndTreeView, TVM_EXPAND, TVE_EXPAND, (LPARAM)item );
 172
 173     IShellFolder_Release(lpsfRoot);
 174     IShellFolder_Release(lpsfParent);
 175 }
 176
 177 static int GetIcon(LPITEMIDLIST lpi, UINT uFlags)
 178 {
 179     SHFILEINFOW sfi;
 180     SHGetFileInfoW((LPCWSTR)lpi, 0 ,&sfi, sizeof(SHFILEINFOW), uFlags);
 181     return sfi.iIcon;
 182 }
 183
 184 static void GetNormalAndSelectedIcons(LPITEMIDLIST lpifq, LPTVITEMW lpTV_ITEM)
 185 {
 186     LPITEMIDLIST pidlDesktop = NULL;
 187     DWORD flags;
 188
 189     TRACE("%p %p\n",lpifq, lpTV_ITEM);
 190
 191     if (!lpifq)
 192     {
 193         pidlDesktop = _ILCreateDesktop();
 194         lpifq = pidlDesktop;
 195     }
 196
 197     flags = SHGFI_PIDL | SHGFI_SYSICONINDEX | SHGFI_SMALLICON;
 198     lpTV_ITEM->iImage = GetIcon( lpifq, flags );
 199
 200     flags = SHGFI_PIDL | SHGFI_SYSICONINDEX | SHGFI_SMALLICON | SHGFI_OPENICON;
 201     lpTV_ITEM->iSelectedImage = GetIcon( lpifq, flags );
 202
 203     if (pidlDesktop)
 204         ILFree( pidlDesktop );
 205 }
 206
 207 /******************************************************************************
 208  * GetName [Internal]
 209  *
 210  * Query a shell folder for the display name of one of it's children
 211  *
 212  * PARAMS
 213  *  lpsf           [I] IShellFolder interface of the folder to be queried.
 214  *  lpi            [I] ITEMIDLIST of the child, relative to parent
 215  *  dwFlags        [I] as in IShellFolder::GetDisplayNameOf
 216  *  lpFriendlyName [O] The desired display name in unicode
 217  *
 218  * RETURNS
 219  *  Success: TRUE
 220  *  Failure: FALSE
 221  */
 222 static BOOL GetName(LPSHELLFOLDER lpsf, LPCITEMIDLIST lpi, DWORD dwFlags, LPWSTR lpFriendlyName)
 223 {
 224         BOOL   bSuccess=TRUE;
 225         STRRET str;
 226
 227         TRACE("%p %p %x %p\n", lpsf, lpi, dwFlags, lpFriendlyName);
 228         if (SUCCEEDED(IShellFolder_GetDisplayNameOf(lpsf, lpi, dwFlags, &str)))
 229           bSuccess = StrRetToStrNW(lpFriendlyName, MAX_PATH, &str, lpi);
 230         else
 231           bSuccess = FALSE;
 232
 233         TRACE("-- %s\n", debugstr_w(lpFriendlyName));
 234         return bSuccess;
 235 }
 236
 237 /******************************************************************************
 238  * InsertTreeViewItem [Internal]
 239  *
 240  * PARAMS
 241  *  info       [I] data for the dialog
 242  *  lpsf       [I] IShellFolder interface of the item's parent shell folder
 243  *  pidl       [I] ITEMIDLIST of the child to insert, relativ to parent
 244  *  pidlParent [I] ITEMIDLIST of the parent shell folder
 245  *  pEnumIL    [I] Iterator for the children of the item to be inserted
 246  *  hParent    [I] The treeview-item that represents the parent shell folder
 247  *
 248  * RETURNS
 249  *  Success: Handle to the created and inserted treeview-item
 250  *  Failure: NULL
 251  */
 252 static HTREEITEM InsertTreeViewItem( browse_info *info, IShellFolder * lpsf,
 253     LPCITEMIDLIST pidl, LPCITEMIDLIST pidlParent, IEnumIDList* pEnumIL,
 254     HTREEITEM hParent)
 255 {
 256         TVITEMW         tvi;
 257         TVINSERTSTRUCTW tvins;
 258         WCHAR           szBuff[MAX_PATH];
 259         LPTV_ITEMDATA   lptvid=0;
 260
 261         tvi.mask  = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_PARAM;
 262
 263         tvi.cChildren= pEnumIL ? 1 : 0;
 264         tvi.mask |= TVIF_CHILDREN;
 265
 266         lptvid = SHAlloc( sizeof(TV_ITEMDATA) );
 267         if (!lptvid)
 268             return NULL;
 269
 270         if (!GetName(lpsf, pidl, SHGDN_NORMAL, szBuff))
 271             return NULL;
 272
 273         tvi.pszText    = szBuff;
 274         tvi.cchTextMax = MAX_PATH;
 275         tvi.lParam = (LPARAM)lptvid;
 276
 277         IShellFolder_AddRef(lpsf);
 278         lptvid->lpsfParent = lpsf;
 279         lptvid->lpi     = ILClone(pidl);
 280         lptvid->lpifq   = pidlParent ? ILCombine(pidlParent, pidl) : ILClone(pidl);
 281         lptvid->pEnumIL = pEnumIL;
 282         GetNormalAndSelectedIcons(lptvid->lpifq, &tvi);
 283
 284         tvins.u.item       = tvi;
 285         tvins.hInsertAfter = NULL;
 286         tvins.hParent      = hParent;
 287
 288         return (HTREEITEM)TreeView_InsertItemW( info->hwndTreeView, &tvins );
 289 }
 290
 291 /******************************************************************************
 292  * FillTreeView [Internal]
 293  *
 294  * For each child (given by lpe) of the parent shell folder, which is given by
 295  * lpsf and whose PIDL is pidl, insert a treeview-item right under hParent
 296  *
 297  * PARAMS
 298  *  info    [I] data for the dialog
 299  *  lpsf    [I] IShellFolder interface of the parent shell folder
 300  *  pidl    [I] ITEMIDLIST of the parent shell folder
 301  *  hParent [I] The treeview item that represents the parent shell folder
 302  *  lpe     [I] An iterator for the children of the parent shell folder
 303  */
 304 static void FillTreeView( browse_info *info, IShellFolder * lpsf,
 305                  LPITEMIDLIST  pidl, HTREEITEM hParent, IEnumIDList* lpe)
 306 {
 307         HTREEITEM       hPrev = 0;
 308         LPITEMIDLIST    pidlTemp = 0;
 309         ULONG           ulFetched;
 310         HRESULT         hr;
 311         HWND            hwnd = GetParent( info->hwndTreeView );
 312
 313         TRACE("%p %p %p %p\n",lpsf, pidl, hParent, lpe);
 314
 315         /* No IEnumIDList -> No children */
 316         if (!lpe) return;
 317
 318         SetCapture( hwnd );
 319         SetCursor( LoadCursorA( 0, (LPSTR)IDC_WAIT ) );
 320
 321         while (NOERROR == IEnumIDList_Next(lpe,1,&pidlTemp,&ulFetched))
 322         {
 323             ULONG ulAttrs = SFGAO_HASSUBFOLDER | SFGAO_FOLDER;
 324             IEnumIDList* pEnumIL = NULL;
 325             IShellFolder* pSFChild = NULL;
 326             IShellFolder_GetAttributesOf(lpsf, 1, (LPCITEMIDLIST*)&pidlTemp, &ulAttrs);
 327             if (ulAttrs & SFGAO_FOLDER)
 328             {
 329                 hr = IShellFolder_BindToObject(lpsf,pidlTemp,NULL,&IID_IShellFolder,(LPVOID*)&pSFChild);
 330                 if (SUCCEEDED(hr))
 331                 {
 332                     DWORD flags = BrowseFlagsToSHCONTF(info->lpBrowseInfo->ulFlags);
 333                     hr = IShellFolder_EnumObjects(pSFChild, hwnd, flags, &pEnumIL);
 334                     if (hr == S_OK)
 335                     {
 336                         if ((IEnumIDList_Skip(pEnumIL, 1) != S_OK) ||
 337                              FAILED(IEnumIDList_Reset(pEnumIL)))
 338                         {
 339                             IEnumIDList_Release(pEnumIL);
 340                             pEnumIL = NULL;
 341                         }
 342                     }
 343                     IShellFolder_Release(pSFChild);
 344                 }
 345             }
 346
 347             if (!(hPrev = InsertTreeViewItem(info, lpsf, pidlTemp, pidl, pEnumIL, hParent)))
 348                 goto done;
 349             SHFree(pidlTemp);  /* Finally, free the pidl that the shell gave us... */
 350             pidlTemp=NULL;
 351         }
 352
 353 done:
 354         ReleaseCapture();
 355         SetCursor(LoadCursorW(0, (LPWSTR)IDC_ARROW));
 356     SHFree(pidlTemp);
 357 }
 358
 359 static inline BOOL PIDLIsType(LPCITEMIDLIST pidl, PIDLTYPE type)
 360 {
 361     LPPIDLDATA data = _ILGetDataPointer(pidl);
 362     if (!data)
 363         return FALSE;
 364     return (data->type == type);
 365 }
 366
 367 static void BrsFolder_CheckValidSelection( browse_info *info, LPTV_ITEMDATA lptvid )
 368 {
 369     LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;
 370     LPCITEMIDLIST pidl = lptvid->lpi;
 371     BOOL bEnabled = TRUE;
 372     DWORD dwAttributes;
 373     HRESULT r;
 374
 375     if ((lpBrowseInfo->ulFlags & BIF_BROWSEFORCOMPUTER) &&
 376         !PIDLIsType(pidl, PT_COMP))
 377         bEnabled = FALSE;
 378     if (lpBrowseInfo->ulFlags & BIF_RETURNFSANCESTORS)
 379     {
 380         dwAttributes = SFGAO_FILESYSANCESTOR | SFGAO_FILESYSTEM;
 381         r = IShellFolder_GetAttributesOf(lptvid->lpsfParent, 1,
 382                                 (LPCITEMIDLIST*)&lptvid->lpi, &dwAttributes);
 383         if (FAILED(r) || !(dwAttributes & (SFGAO_FILESYSANCESTOR|SFGAO_FILESYSTEM)))
 384             bEnabled = FALSE;
 385     }
 386     if (lpBrowseInfo->ulFlags & BIF_RETURNONLYFSDIRS)
 387     {
 388         dwAttributes = SFGAO_FOLDER | SFGAO_FILESYSTEM;
 389         r = IShellFolder_GetAttributesOf(lptvid->lpsfParent, 1,
 390                                 (LPCITEMIDLIST*)&lptvid->lpi, &dwAttributes);
 391         if (FAILED(r) ||
 392             ((dwAttributes & (SFGAO_FOLDER|SFGAO_FILESYSTEM)) != (SFGAO_FOLDER|SFGAO_FILESYSTEM)))
 393         {
 394             bEnabled = FALSE;
 395         }
 396     }
 397     SendMessageW(info->hWnd, BFFM_ENABLEOK, 0, (LPARAM)bEnabled);
 398 }
 399
 400 static LRESULT BrsFolder_Treeview_Delete( browse_info *info, NMTREEVIEWW *pnmtv )
 401 {
 402     LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA)pnmtv->itemOld.lParam;
 403
 404     TRACE("TVN_DELETEITEMA/W %p\n", lptvid);
 405
 406     IShellFolder_Release(lptvid->lpsfParent);
 407     if (lptvid->pEnumIL)
 408         IEnumIDList_Release(lptvid->pEnumIL);
 409     SHFree(lptvid->lpi);
 410     SHFree(lptvid->lpifq);
 411     SHFree(lptvid);
 412     return 0;
 413 }
 414
 415 static LRESULT BrsFolder_Treeview_Expand( browse_info *info, NMTREEVIEWW *pnmtv )
 416 {
 417     IShellFolder *lpsf2 = NULL;
 418     LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
 419     HRESULT r;
 420
 421     TRACE("TVN_ITEMEXPANDINGA/W\n");
 422
 423     if ((pnmtv->itemNew.state & TVIS_EXPANDEDONCE))
 424         return 0;
 425
 426     if (lptvid->lpi && lptvid->lpi->mkid.cb) {
 427         r = IShellFolder_BindToObject( lptvid->lpsfParent, lptvid->lpi, 0,
 428                                       (REFIID)&IID_IShellFolder, (LPVOID *)&lpsf2 );
 429     } else {
 430         lpsf2 = lptvid->lpsfParent;
 431         r = IShellFolder_AddRef(lpsf2);
 432     }
 433
 434     if (SUCCEEDED(r))
 435         FillTreeView( info, lpsf2, lptvid->lpifq, pnmtv->itemNew.hItem, lptvid->pEnumIL);
 436
 437     /* My Computer is already sorted and trying to do a simple text
 438      * sort will only mess things up */
 439     if (!_ILIsMyComputer(lptvid->lpi))
 440         SendMessageW( info->hwndTreeView, TVM_SORTCHILDREN,
 441                       FALSE, (LPARAM)pnmtv->itemNew.hItem );
 442
 443     return 0;
 444 }
 445
 446 static HRESULT BrsFolder_Treeview_Changed( browse_info *info, NMTREEVIEWW *pnmtv )
 447 {
 448     LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
 449
 450     lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
 451     info->pidlRet = lptvid->lpifq;
 452     browsefolder_callback( info->lpBrowseInfo, info->hWnd, BFFM_SELCHANGED,
 453                            (LPARAM)info->pidlRet );
 454     BrsFolder_CheckValidSelection( info, lptvid );
 455     return 0;
 456 }
 457
 458 static LRESULT BrsFolder_OnNotify( browse_info *info, UINT CtlID, LPNMHDR lpnmh )
 459 {
 460     NMTREEVIEWW *pnmtv = (NMTREEVIEWW *)lpnmh;
 461
 462     TRACE("%p %x %p msg=%x\n", info, CtlID, lpnmh, pnmtv->hdr.code);
 463
 464     if (pnmtv->hdr.idFrom != IDD_TREEVIEW)
 465         return 0;
 466
 467     switch (pnmtv->hdr.code)
 468     {
 469     case TVN_DELETEITEMA:
 470     case TVN_DELETEITEMW:
 471         return BrsFolder_Treeview_Delete( info, pnmtv );
 472
 473     case TVN_ITEMEXPANDINGA:
 474     case TVN_ITEMEXPANDINGW:
 475         return BrsFolder_Treeview_Expand( info, pnmtv );
 476
 477     case TVN_SELCHANGEDA:
 478     case TVN_SELCHANGEDW:
 479         return BrsFolder_Treeview_Changed( info, pnmtv );
 480
 481     default:
 482         WARN("unhandled (%d)\n", pnmtv->hdr.code);
 483         break;
 484     }
 485
 486     return 0;
 487 }
 488
 489
 490 static BOOL BrsFolder_OnCreate( HWND hWnd, browse_info *info )
 491 {
 492     LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;
 493
 494     info->hWnd = hWnd;
 495     SetPropW( hWnd, szBrowseFolderInfo, info );
 496
 497     if (lpBrowseInfo->ulFlags & ~SUPPORTEDFLAGS)
 498         FIXME("flags %x not implemented\n", lpBrowseInfo->ulFlags & ~SUPPORTEDFLAGS);
 499
 500     if (lpBrowseInfo->lpszTitle)
 501         SetWindowTextW( GetDlgItem(hWnd, IDD_TITLE), lpBrowseInfo->lpszTitle );
 502     else
 503         ShowWindow( GetDlgItem(hWnd, IDD_TITLE), SW_HIDE );
 504
 505     if (!(lpBrowseInfo->ulFlags & BIF_STATUSTEXT))
 506         ShowWindow( GetDlgItem(hWnd, IDD_STATUS), SW_HIDE );
 507
 508     info->hwndTreeView = GetDlgItem( hWnd, IDD_TREEVIEW );
 509     if (info->hwndTreeView)
 510         InitializeTreeView( info );
 511     else
 512         ERR("treeview control missing!\n");
 513
 514     browsefolder_callback( info->lpBrowseInfo, hWnd, BFFM_INITIALIZED, 0 );
 515
 516     return TRUE;
 517 }
 518
 519 static BOOL BrsFolder_OnCommand( browse_info *info, UINT id )
 520 {
 521     LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;
 522
 523     switch (id)
 524     {
 525     case IDOK:
 526         /* The original pidl is owned by the treeview and will be free'd. */
 527         info->pidlRet = ILClone(info->pidlRet);
 528         if (info->pidlRet == NULL) /* A null pidl would mean a cancel */
 529             info->pidlRet = _ILCreateDesktop();
 530         pdump( info->pidlRet );
 531         if (lpBrowseInfo->pszDisplayName)
 532             SHGetPathFromIDListW( info->pidlRet, lpBrowseInfo->pszDisplayName );
 533         EndDialog( info->hWnd, 1 );
 534         return TRUE;
 535
 536     case IDCANCEL:
 537         EndDialog( info->hWnd, 0 );
 538         return TRUE;
 539     }
 540     return FALSE;
 541 }
 542
 543 static BOOL BrsFolder_OnSetExpanded(browse_info *info, LPVOID selection,
 544     BOOL is_str, HTREEITEM *pItem)
 545 {
 546     LPITEMIDLIST pidlSelection = (LPITEMIDLIST)selection;
 547     LPCITEMIDLIST pidlCurrent, pidlRoot;
 548     TVITEMEXW item;
 549     BOOL bResult = FALSE;
 550
 551     /* If 'selection' is a string, convert to a Shell ID List. */
 552     if (is_str) {
 553         IShellFolder *psfDesktop;
 554         HRESULT hr;
 555
 556         hr = SHGetDesktopFolder(&psfDesktop);
 557         if (FAILED(hr))
 558             goto done;
 559
 560         hr = IShellFolder_ParseDisplayName(psfDesktop, NULL, NULL,
 561                      (LPOLESTR)selection, NULL, &pidlSelection, NULL);
 562         IShellFolder_Release(psfDesktop);
 563         if (FAILED(hr))
 564             goto done;
 565     }
 566
 567     /* Move pidlCurrent behind the SHITEMIDs in pidlSelection, which are the root of
 568      * the sub-tree currently displayed. */
 569     pidlRoot = info->lpBrowseInfo->pidlRoot;
 570     pidlCurrent = pidlSelection;
 571     while (!_ILIsEmpty(pidlRoot) && _ILIsEqualSimple(pidlRoot, pidlCurrent)) {
 572         pidlRoot = ILGetNext(pidlRoot);
 573         pidlCurrent = ILGetNext(pidlCurrent);
 574     }
 575
 576     /* The given ID List is not part of the SHBrowseForFolder's current sub-tree. */
 577     if (!_ILIsEmpty(pidlRoot))
 578         goto done;
 579
 580     /* Initialize item to point to the first child of the root folder. */
 581     memset(&item, 0, sizeof(item));
 582     item.mask = TVIF_PARAM;
 583     item.hItem = TreeView_GetRoot(info->hwndTreeView);
 584     if (item.hItem)
 585         item.hItem = TreeView_GetChild(info->hwndTreeView, item.hItem);
 586
 587     /* Walk the tree along the nodes corresponding to the remaining ITEMIDLIST */
 588     while (item.hItem && !_ILIsEmpty(pidlCurrent)) {
 589         LPTV_ITEMDATA pItemData;
 590
 591         SendMessageW(info->hwndTreeView, TVM_GETITEMW, 0, (LPARAM)&item);
 592         pItemData = (LPTV_ITEMDATA)item.lParam;
 593
 594         if (_ILIsEqualSimple(pItemData->lpi, pidlCurrent)) {
 595             pidlCurrent = ILGetNext(pidlCurrent);
 596             if (!_ILIsEmpty(pidlCurrent)) {
 597                 /* Only expand current node and move on to it's first child,
 598                  * if we didn't already reach the last SHITEMID */
 599                 SendMessageW(info->hwndTreeView, TVM_EXPAND, TVE_EXPAND, (LPARAM)item.hItem);
 600                 item.hItem = TreeView_GetChild(info->hwndTreeView, item.hItem);
 601             }
 602         } else {
 603             item.hItem = TreeView_GetNextSibling(info->hwndTreeView, item.hItem);
 604         }
 605     }
 606
 607     if (_ILIsEmpty(pidlCurrent) && item.hItem)
 608         bResult = TRUE;
 609
 610 done:
 611     if (pidlSelection && pidlSelection != (LPITEMIDLIST)selection)
 612         ILFree(pidlSelection);
 613
 614     if (pItem)
 615         *pItem = item.hItem;
 616
 617     return bResult;
 618 }
 619
 620 static BOOL BrsFolder_OnSetSelectionW(browse_info *info, LPVOID selection, BOOL is_str) {
 621     HTREEITEM hItem;
 622     BOOL bResult;
 623
 624     bResult = BrsFolder_OnSetExpanded(info, selection, is_str, &hItem);
 625     if (bResult)
 626         SendMessageW(info->hwndTreeView, TVM_SELECTITEM, TVGN_CARET, (LPARAM)hItem );
 627     return bResult;
 628 }
 629
 630 static BOOL BrsFolder_OnSetSelectionA(browse_info *info, LPVOID selection, BOOL is_str) {
 631     LPWSTR selectionW = NULL;
 632     BOOL result = FALSE;
 633     int length;
 634
 635     if (!is_str)
 636         return BrsFolder_OnSetSelectionW(info, selection, is_str);
 637
 638     if ((length = MultiByteToWideChar(CP_ACP, 0, (LPCSTR)selection, -1, NULL, 0)) &&
 639         (selectionW = HeapAlloc(GetProcessHeap(), 0, length * sizeof(WCHAR))) &&
 640         MultiByteToWideChar(CP_ACP, 0, (LPCSTR)selection, -1, selectionW, length))
 641     {
 642         result = BrsFolder_OnSetSelectionW(info, selectionW, is_str);
 643     }
 644
 645     HeapFree(GetProcessHeap(), 0, selectionW);
 646     return result;
 647 }
 648
 649 /*************************************************************************
 650  *             BrsFolderDlgProc32  (not an exported API function)
 651  */
 652 static INT_PTR CALLBACK BrsFolderDlgProc( HWND hWnd, UINT msg, WPARAM wParam,
 653                                           LPARAM lParam )
 654 {
 655     browse_info *info;
 656
 657     TRACE("hwnd=%p msg=%04x 0x%08x 0x%08lx\n", hWnd,  msg, wParam, lParam );
 658
 659     if (msg == WM_INITDIALOG)
 660         return BrsFolder_OnCreate( hWnd, (browse_info*) lParam );
 661
 662     info = (browse_info*) GetPropW( hWnd, szBrowseFolderInfo );
 663
 664     switch (msg)
 665     {
 666     case WM_NOTIFY:
 667         return BrsFolder_OnNotify( info, (UINT)wParam, (LPNMHDR)lParam);
 668
 669     case WM_COMMAND:
 670         return BrsFolder_OnCommand( info, wParam );
 671
 672     case BFFM_SETSTATUSTEXTA:
 673         TRACE("Set status %s\n", debugstr_a((LPSTR)lParam));
 674         SetWindowTextA(GetDlgItem(hWnd, IDD_STATUS), (LPSTR)lParam);
 675         break;
 676
 677     case BFFM_SETSTATUSTEXTW:
 678         TRACE("Set status %s\n", debugstr_w((LPWSTR)lParam));
 679         SetWindowTextW(GetDlgItem(hWnd, IDD_STATUS), (LPWSTR)lParam);
 680         break;
 681
 682     case BFFM_ENABLEOK:
 683         TRACE("Enable %ld\n", lParam);
 684         EnableWindow(GetDlgItem(hWnd, 1), (lParam)?TRUE:FALSE);
 685         break;
 686
 687     case BFFM_SETOKTEXT: /* unicode only */
 688         TRACE("Set OK text %s\n", debugstr_w((LPWSTR)wParam));
 689         SetWindowTextW(GetDlgItem(hWnd, 1), (LPWSTR)wParam);
 690         break;
 691
 692     case BFFM_SETSELECTIONA:
 693         return BrsFolder_OnSetSelectionA(info, (LPVOID)lParam, (BOOL)wParam);
 694
 695     case BFFM_SETSELECTIONW:
 696         return BrsFolder_OnSetSelectionW(info, (LPVOID)lParam, (BOOL)wParam);
 697
 698     case BFFM_SETEXPANDED: /* unicode only */
 699         return BrsFolder_OnSetExpanded(info, (LPVOID)lParam, (BOOL)wParam, NULL);
 700     }
 701     return FALSE;
 702 }
 703
 704 static const WCHAR swBrowseTemplateName[] = {
 705     'S','H','B','R','S','F','O','R','F','O','L','D','E','R','_','M','S','G','B','O','X',0};
 706
 707 /*************************************************************************
 708  * SHBrowseForFolderA [SHELL32.@]
 709  * SHBrowseForFolder  [SHELL32.@]
 710  */
 711 LPITEMIDLIST WINAPI SHBrowseForFolderA (LPBROWSEINFOA lpbi)
 712 {
 713     BROWSEINFOW bi;
 714     LPITEMIDLIST lpid;
 715     INT len;
 716     LPWSTR title;
 717
 718     TRACE("%p\n", lpbi);
 719
 720     bi.hwndOwner = lpbi->hwndOwner;
 721     bi.pidlRoot = lpbi->pidlRoot;
 722     if (lpbi->pszDisplayName)
 723     {
 724         bi.pszDisplayName = HeapAlloc( GetProcessHeap(), 0, MAX_PATH * sizeof(WCHAR) );
 725         MultiByteToWideChar( CP_ACP, 0, lpbi->pszDisplayName, -1, bi.pszDisplayName, MAX_PATH );
 726     }
 727     else
 728         bi.pszDisplayName = NULL;
 729
 730     if (lpbi->lpszTitle)
 731     {
 732         len = MultiByteToWideChar( CP_ACP, 0, lpbi->lpszTitle, -1, NULL, 0 );
 733         title = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 734         MultiByteToWideChar( CP_ACP, 0, lpbi->lpszTitle, -1, title, len );
 735     }
 736     else
 737         title = NULL;
 738
 739     bi.lpszTitle = title;
 740     bi.ulFlags = lpbi->ulFlags;
 741     bi.lpfn = lpbi->lpfn;
 742     bi.lParam = lpbi->lParam;
 743     bi.iImage = lpbi->iImage;
 744     lpid = SHBrowseForFolderW( &bi );
 745     if (bi.pszDisplayName)
 746     {
 747         WideCharToMultiByte( CP_ACP, 0, bi.pszDisplayName, -1,
 748                              lpbi->pszDisplayName, MAX_PATH, 0, NULL);
 749         HeapFree( GetProcessHeap(), 0, bi.pszDisplayName );
 750     }
 751     HeapFree(GetProcessHeap(), 0, title);
 752     lpbi->iImage = bi.iImage;
 753     return lpid;
 754 }
 755
 756
 757 /*************************************************************************
 758  * SHBrowseForFolderW [SHELL32.@]
 759  *
 760  * NOTES
 761  *  crashes when passed a null pointer
 762  */
 763 LPITEMIDLIST WINAPI SHBrowseForFolderW (LPBROWSEINFOW lpbi)
 764 {
 765     browse_info info;
 766     DWORD r;
 767     HRESULT hr;
 768
 769     info.hWnd = 0;
 770     info.pidlRet = NULL;
 771     info.lpBrowseInfo = lpbi;
 772     info.hwndTreeView = NULL;
 773
 774     hr = OleInitialize(NULL);
 775     r = DialogBoxParamW( shell32_hInstance, swBrowseTemplateName, lpbi->hwndOwner,
 776                          BrsFolderDlgProc, (LPARAM)&info );
 777     if (SUCCEEDED(hr))
 778         OleUninitialize();
 779     if (!r)
 780         return NULL;
 781
 782     return info.pidlRet;
 783 }