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