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  *    - implement new dialog style "make new folder" button
  22  *    - implement editbox
  23  */
  24
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #define COBJMACROS
  29 #define NONAMELESSUNION
  30 #define NONAMELESSSTRUCT
  31
  32 #include "wine/debug.h"
  33 #include "undocshell.h"
  34 #include "pidl.h"
  35 #include "shell32_main.h"
  36 #include "shellapi.h"
  37 #include "shresdef.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  40
  41 /* original margins and control size */
  42 typedef struct tagLAYOUT_DATA
  43 {
  44     LONG left, width, right;
  45     LONG top, height, bottom;
  46 } LAYOUT_DATA;
  47
  48 typedef struct tagbrowse_info
  49 {
  50     HWND          hWnd;
  51     HWND          hwndTreeView;
  52     LPBROWSEINFOW lpBrowseInfo;
  53     LPITEMIDLIST  pidlRet;
  54     LAYOUT_DATA  *layout;  /* filled by LayoutInit, used by LayoutUpdate */
  55     SIZE          szMin;
  56 } browse_info;
  57
  58 typedef struct tagTV_ITEMDATA
  59 {
  60    LPSHELLFOLDER lpsfParent; /* IShellFolder of the parent */
  61    LPITEMIDLIST  lpi;        /* PIDL relative to parent */
  62    LPITEMIDLIST  lpifq;      /* Fully qualified PIDL */
  63    IEnumIDList*  pEnumIL;    /* Children iterator */
  64 } TV_ITEMDATA, *LPTV_ITEMDATA;
  65
  66 typedef struct tagLAYOUT_INFO
  67 {
  68     int iItemId;          /* control id */
  69     DWORD dwAnchor;       /* BF_* flags specifying which margins should remain constant */
  70 } LAYOUT_INFO;
  71
  72 static const LAYOUT_INFO g_layout_info[] =
  73 {
  74     {IDD_TITLE,         BF_TOP|BF_LEFT|BF_RIGHT},
  75     {IDD_STATUS,        BF_TOP|BF_LEFT|BF_RIGHT},
  76     {IDD_FOLDER,        BF_TOP|BF_LEFT|BF_RIGHT},
  77     {IDD_TREEVIEW,      BF_TOP|BF_BOTTOM|BF_LEFT|BF_RIGHT},
  78     {IDD_FOLDER,        BF_BOTTOM|BF_LEFT},
  79     {IDD_FOLDERTEXT,    BF_BOTTOM|BF_LEFT|BF_RIGHT},
  80     {IDD_MAKENEWFOLDER, BF_BOTTOM|BF_LEFT},
  81     {IDOK,              BF_BOTTOM|BF_RIGHT},
  82     {IDCANCEL,          BF_BOTTOM|BF_RIGHT}
  83 };
  84
  85 #define LAYOUT_INFO_COUNT (sizeof(g_layout_info)/sizeof(g_layout_info[0]))
  86
  87 #define SUPPORTEDFLAGS (BIF_STATUSTEXT | \
  88                         BIF_BROWSEFORCOMPUTER | \
  89                         BIF_RETURNFSANCESTORS | \
  90                         BIF_RETURNONLYFSDIRS | \
  91                         BIF_NONEWFOLDERBUTTON | \
  92                         BIF_NEWDIALOGSTYLE | \
  93                         BIF_BROWSEINCLUDEFILES)
  94
  95 static void FillTreeView(browse_info*, LPSHELLFOLDER,
  96                LPITEMIDLIST, HTREEITEM, IEnumIDList*);
  97 static HTREEITEM InsertTreeViewItem( browse_info*, IShellFolder *,
  98                LPCITEMIDLIST, LPCITEMIDLIST, IEnumIDList*, HTREEITEM);
  99
 100 static const WCHAR szBrowseFolderInfo[] = {
 101     '_','_','W','I','N','E','_',
 102     'B','R','S','F','O','L','D','E','R','D','L','G','_',
 103     'I','N','F','O',0
 104 };
 105
 106 static inline DWORD BrowseFlagsToSHCONTF(UINT ulFlags)
 107 {
 108     return SHCONTF_FOLDERS | (ulFlags & BIF_BROWSEINCLUDEFILES ? SHCONTF_NONFOLDERS : 0);
 109 }
 110
 111 static void browsefolder_callback( LPBROWSEINFOW lpBrowseInfo, HWND hWnd,
 112                                    UINT msg, LPARAM param )
 113 {
 114     if (!lpBrowseInfo->lpfn)
 115         return;
 116     lpBrowseInfo->lpfn( hWnd, msg, param, lpBrowseInfo->lParam );
 117 }
 118
 119 static LAYOUT_DATA *LayoutInit(HWND hwnd, const LAYOUT_INFO *layout_info, int layout_count)
 120 {
 121     LAYOUT_DATA *data;
 122     RECT rcWnd;
 123     int i;
 124
 125     GetClientRect(hwnd, &rcWnd);
 126     data = SHAlloc(sizeof(LAYOUT_DATA)*layout_count);
 127     for (i = 0; i < layout_count; i++)
 128     {
 129         RECT r;
 130         HWND hItem = GetDlgItem(hwnd, layout_info[i].iItemId);
 131
 132         if (hItem == NULL)
 133             ERR("Item %d not found\n", i);
 134         GetWindowRect(hItem, &r);
 135         MapWindowPoints(HWND_DESKTOP, hwnd, (LPPOINT)&r, 2);
 136
 137         data[i].left = r.left;
 138         data[i].right = rcWnd.right - r.right;
 139         data[i].width = r.right - r.left;
 140
 141         data[i].top = r.top;
 142         data[i].bottom = rcWnd.bottom - r.bottom;
 143         data[i].height = r.bottom - r.top;
 144     }
 145     return data;
 146 }
 147
 148 static void LayoutUpdate(HWND hwnd, LAYOUT_DATA *data, const LAYOUT_INFO *layout_info, int layout_count)
 149 {
 150     RECT rcWnd;
 151     int i;
 152
 153     GetClientRect(hwnd, &rcWnd);
 154     for (i = 0; i < layout_count; i++)
 155     {
 156         RECT r;
 157         HWND hItem = GetDlgItem(hwnd, layout_info[i].iItemId);
 158
 159         GetWindowRect(hItem, &r);
 160         MapWindowPoints(HWND_DESKTOP, hwnd, (LPPOINT)&r, 2);
 161
 162         if (layout_info[i].dwAnchor & BF_RIGHT)
 163         {
 164             r.right = rcWnd.right - data[i].right;
 165             if (!(layout_info[i].dwAnchor & BF_LEFT))
 166                 r.left = r.right - data[i].width;
 167         }
 168
 169         if (layout_info[i].dwAnchor & BF_BOTTOM)
 170         {
 171             r.bottom = rcWnd.bottom - data[i].bottom;
 172             if (!(layout_info[i].dwAnchor & BF_TOP))
 173                 r.top = r.bottom - data[i].height;
 174         }
 175
 176         SetWindowPos(hItem, NULL, r.left, r.top, r.right - r.left, r.bottom - r.top, SWP_NOZORDER);
 177     }
 178 }
 179
 180
 181 /******************************************************************************
 182  * InitializeTreeView [Internal]
 183  *
 184  * Called from WM_INITDIALOG handler.
 185  *
 186  * PARAMS
 187  *  hwndParent [I] The BrowseForFolder dialog
 188  *  root       [I] ITEMIDLIST of the root shell folder
 189  */
 190 static void InitializeTreeView( browse_info *info )
 191 {
 192     LPITEMIDLIST pidlParent, pidlChild;
 193     HIMAGELIST hImageList;
 194     HRESULT hr;
 195     IShellFolder *lpsfParent, *lpsfRoot;
 196     IEnumIDList * pEnumChildren = NULL;
 197     HTREEITEM item;
 198     DWORD flags;
 199     LPCITEMIDLIST root = info->lpBrowseInfo->pidlRoot;
 200
 201     TRACE("%p\n", info );
 202
 203     Shell_GetImageLists(NULL, &hImageList);
 204
 205     if (hImageList)
 206         SendMessageW( info->hwndTreeView, TVM_SETIMAGELIST, 0, (LPARAM)hImageList );
 207
 208     /* We want to call InsertTreeViewItem down the code, in order to insert
 209      * the root item of the treeview. Due to InsertTreeViewItem's signature,
 210      * we need the following to do this:
 211      *
 212      * + An ITEMIDLIST corresponding to _the parent_ of root.
 213      * + An ITEMIDLIST, which is a relative path from root's parent to root
 214      *   (containing a single SHITEMID).
 215      * + An IShellFolder interface pointer of root's parent folder.
 216      *
 217      * If root is 'Desktop', then root's parent is also 'Desktop'.
 218      */
 219
 220     pidlParent = ILClone(root);
 221     ILRemoveLastID(pidlParent);
 222     pidlChild = ILClone(ILFindLastID(root));
 223
 224     if (_ILIsDesktop(pidlParent)) {
 225         hr = SHGetDesktopFolder(&lpsfParent);
 226     } else {
 227         IShellFolder *lpsfDesktop;
 228         hr = SHGetDesktopFolder(&lpsfDesktop);
 229         if (FAILED(hr)) {
 230             WARN("SHGetDesktopFolder failed! hr = %08x\n", hr);
 231             return;
 232         }
 233         hr = IShellFolder_BindToObject(lpsfDesktop, pidlParent, 0, &IID_IShellFolder, (LPVOID*)&lpsfParent);
 234         IShellFolder_Release(lpsfDesktop);
 235     }
 236
 237     if (FAILED(hr)) {
 238         WARN("Could not bind to parent shell folder! hr = %08x\n", hr);
 239         return;
 240     }
 241
 242     if (!_ILIsEmpty(pidlChild)) {
 243         hr = IShellFolder_BindToObject(lpsfParent, pidlChild, 0, &IID_IShellFolder, (LPVOID*)&lpsfRoot);
 244     } else {
 245         lpsfRoot = lpsfParent;
 246         hr = IShellFolder_AddRef(lpsfParent);
 247     }
 248
 249     if (FAILED(hr)) {
 250         WARN("Could not bind to root shell folder! hr = %08x\n", hr);
 251         IShellFolder_Release(lpsfParent);
 252         return;
 253     }
 254
 255     flags = BrowseFlagsToSHCONTF( info->lpBrowseInfo->ulFlags );
 256     hr = IShellFolder_EnumObjects( lpsfRoot, info->hWnd, flags, &pEnumChildren );
 257     if (FAILED(hr)) {
 258         WARN("Could not get child iterator! hr = %08x\n", hr);
 259         IShellFolder_Release(lpsfParent);
 260         IShellFolder_Release(lpsfRoot);
 261         return;
 262     }
 263
 264     SendMessageW( info->hwndTreeView, TVM_DELETEITEM, 0, (LPARAM)TVI_ROOT );
 265     item = InsertTreeViewItem( info, lpsfParent, pidlChild,
 266                                pidlParent, pEnumChildren, TVI_ROOT );
 267     SendMessageW( info->hwndTreeView, TVM_EXPAND, TVE_EXPAND, (LPARAM)item );
 268
 269     IShellFolder_Release(lpsfRoot);
 270     IShellFolder_Release(lpsfParent);
 271 }
 272
 273 static int GetIcon(LPCITEMIDLIST lpi, UINT uFlags)
 274 {
 275     SHFILEINFOW sfi;
 276     SHGetFileInfoW((LPCWSTR)lpi, 0 ,&sfi, sizeof(SHFILEINFOW), uFlags);
 277     return sfi.iIcon;
 278 }
 279
 280 static void GetNormalAndSelectedIcons(LPITEMIDLIST lpifq, LPTVITEMW lpTV_ITEM)
 281 {
 282     LPITEMIDLIST pidlDesktop = NULL;
 283     DWORD flags;
 284
 285     TRACE("%p %p\n",lpifq, lpTV_ITEM);
 286
 287     if (!lpifq)
 288     {
 289         pidlDesktop = _ILCreateDesktop();
 290         lpifq = pidlDesktop;
 291     }
 292
 293     flags = SHGFI_PIDL | SHGFI_SYSICONINDEX | SHGFI_SMALLICON;
 294     lpTV_ITEM->iImage = GetIcon( lpifq, flags );
 295
 296     flags = SHGFI_PIDL | SHGFI_SYSICONINDEX | SHGFI_SMALLICON | SHGFI_OPENICON;
 297     lpTV_ITEM->iSelectedImage = GetIcon( lpifq, flags );
 298
 299     if (pidlDesktop)
 300         ILFree( pidlDesktop );
 301 }
 302
 303 /******************************************************************************
 304  * GetName [Internal]
 305  *
 306  * Query a shell folder for the display name of one of it's children
 307  *
 308  * PARAMS
 309  *  lpsf           [I] IShellFolder interface of the folder to be queried.
 310  *  lpi            [I] ITEMIDLIST of the child, relative to parent
 311  *  dwFlags        [I] as in IShellFolder::GetDisplayNameOf
 312  *  lpFriendlyName [O] The desired display name in unicode
 313  *
 314  * RETURNS
 315  *  Success: TRUE
 316  *  Failure: FALSE
 317  */
 318 static BOOL GetName(LPSHELLFOLDER lpsf, LPCITEMIDLIST lpi, DWORD dwFlags, LPWSTR lpFriendlyName)
 319 {
 320         BOOL   bSuccess=TRUE;
 321         STRRET str;
 322
 323         TRACE("%p %p %x %p\n", lpsf, lpi, dwFlags, lpFriendlyName);
 324         if (SUCCEEDED(IShellFolder_GetDisplayNameOf(lpsf, lpi, dwFlags, &str)))
 325           bSuccess = StrRetToStrNW(lpFriendlyName, MAX_PATH, &str, lpi);
 326         else
 327           bSuccess = FALSE;
 328
 329         TRACE("-- %s\n", debugstr_w(lpFriendlyName));
 330         return bSuccess;
 331 }
 332
 333 /******************************************************************************
 334  * InsertTreeViewItem [Internal]
 335  *
 336  * PARAMS
 337  *  info       [I] data for the dialog
 338  *  lpsf       [I] IShellFolder interface of the item's parent shell folder
 339  *  pidl       [I] ITEMIDLIST of the child to insert, relative to parent
 340  *  pidlParent [I] ITEMIDLIST of the parent shell folder
 341  *  pEnumIL    [I] Iterator for the children of the item to be inserted
 342  *  hParent    [I] The treeview-item that represents the parent shell folder
 343  *
 344  * RETURNS
 345  *  Success: Handle to the created and inserted treeview-item
 346  *  Failure: NULL
 347  */
 348 static HTREEITEM InsertTreeViewItem( browse_info *info, IShellFolder * lpsf,
 349     LPCITEMIDLIST pidl, LPCITEMIDLIST pidlParent, IEnumIDList* pEnumIL,
 350     HTREEITEM hParent)
 351 {
 352         TVITEMW         tvi;
 353         TVINSERTSTRUCTW tvins;
 354         WCHAR           szBuff[MAX_PATH];
 355         LPTV_ITEMDATA   lptvid=0;
 356
 357         tvi.mask  = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_PARAM;
 358
 359         tvi.cChildren= pEnumIL ? 1 : 0;
 360         tvi.mask |= TVIF_CHILDREN;
 361
 362         lptvid = SHAlloc( sizeof(TV_ITEMDATA) );
 363         if (!lptvid)
 364             return NULL;
 365
 366         if (!GetName(lpsf, pidl, SHGDN_NORMAL, szBuff))
 367             return NULL;
 368
 369         tvi.pszText    = szBuff;
 370         tvi.cchTextMax = MAX_PATH;
 371         tvi.lParam = (LPARAM)lptvid;
 372
 373         IShellFolder_AddRef(lpsf);
 374         lptvid->lpsfParent = lpsf;
 375         lptvid->lpi     = ILClone(pidl);
 376         lptvid->lpifq   = pidlParent ? ILCombine(pidlParent, pidl) : ILClone(pidl);
 377         lptvid->pEnumIL = pEnumIL;
 378         GetNormalAndSelectedIcons(lptvid->lpifq, &tvi);
 379
 380         tvins.u.item       = tvi;
 381         tvins.hInsertAfter = NULL;
 382         tvins.hParent      = hParent;
 383
 384         return TreeView_InsertItemW( info->hwndTreeView, &tvins );
 385 }
 386
 387 /******************************************************************************
 388  * FillTreeView [Internal]
 389  *
 390  * For each child (given by lpe) of the parent shell folder, which is given by
 391  * lpsf and whose PIDL is pidl, insert a treeview-item right under hParent
 392  *
 393  * PARAMS
 394  *  info    [I] data for the dialog
 395  *  lpsf    [I] IShellFolder interface of the parent shell folder
 396  *  pidl    [I] ITEMIDLIST of the parent shell folder
 397  *  hParent [I] The treeview item that represents the parent shell folder
 398  *  lpe     [I] An iterator for the children of the parent shell folder
 399  */
 400 static void FillTreeView( browse_info *info, IShellFolder * lpsf,
 401                  LPITEMIDLIST  pidl, HTREEITEM hParent, IEnumIDList* lpe)
 402 {
 403         HTREEITEM       hPrev = 0;
 404         LPITEMIDLIST    pidlTemp = 0;
 405         ULONG           ulFetched;
 406         HRESULT         hr;
 407         HWND            hwnd = GetParent( info->hwndTreeView );
 408
 409         TRACE("%p %p %p %p\n",lpsf, pidl, hParent, lpe);
 410
 411         /* No IEnumIDList -> No children */
 412         if (!lpe) return;
 413
 414         SetCapture( hwnd );
 415         SetCursor( LoadCursorA( 0, (LPSTR)IDC_WAIT ) );
 416
 417         while (S_OK == IEnumIDList_Next(lpe,1,&pidlTemp,&ulFetched))
 418         {
 419             ULONG ulAttrs = SFGAO_HASSUBFOLDER | SFGAO_FOLDER;
 420             IEnumIDList* pEnumIL = NULL;
 421             IShellFolder* pSFChild = NULL;
 422             IShellFolder_GetAttributesOf(lpsf, 1, (LPCITEMIDLIST*)&pidlTemp, &ulAttrs);
 423             if (ulAttrs & SFGAO_FOLDER)
 424             {
 425                 hr = IShellFolder_BindToObject(lpsf,pidlTemp,NULL,&IID_IShellFolder,(LPVOID*)&pSFChild);
 426                 if (SUCCEEDED(hr))
 427                 {
 428                     DWORD flags = BrowseFlagsToSHCONTF(info->lpBrowseInfo->ulFlags);
 429                     hr = IShellFolder_EnumObjects(pSFChild, hwnd, flags, &pEnumIL);
 430                     if (hr == S_OK)
 431                     {
 432                         if ((IEnumIDList_Skip(pEnumIL, 1) != S_OK) ||
 433                              FAILED(IEnumIDList_Reset(pEnumIL)))
 434                         {
 435                             IEnumIDList_Release(pEnumIL);
 436                             pEnumIL = NULL;
 437                         }
 438                     }
 439                     IShellFolder_Release(pSFChild);
 440                 }
 441             }
 442
 443             if (!(hPrev = InsertTreeViewItem(info, lpsf, pidlTemp, pidl, pEnumIL, hParent)))
 444                 goto done;
 445             SHFree(pidlTemp);  /* Finally, free the pidl that the shell gave us... */
 446             pidlTemp=NULL;
 447         }
 448
 449 done:
 450         ReleaseCapture();
 451         SetCursor(LoadCursorW(0, (LPWSTR)IDC_ARROW));
 452     SHFree(pidlTemp);
 453 }
 454
 455 static inline BOOL PIDLIsType(LPCITEMIDLIST pidl, PIDLTYPE type)
 456 {
 457     LPPIDLDATA data = _ILGetDataPointer(pidl);
 458     if (!data)
 459         return FALSE;
 460     return (data->type == type);
 461 }
 462
 463 static void BrsFolder_CheckValidSelection( browse_info *info, LPTV_ITEMDATA lptvid )
 464 {
 465     LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;
 466     LPCITEMIDLIST pidl = lptvid->lpi;
 467     BOOL bEnabled = TRUE;
 468     DWORD dwAttributes;
 469     HRESULT r;
 470
 471     if ((lpBrowseInfo->ulFlags & BIF_BROWSEFORCOMPUTER) &&
 472         !PIDLIsType(pidl, PT_COMP))
 473         bEnabled = FALSE;
 474     if (lpBrowseInfo->ulFlags & BIF_RETURNFSANCESTORS)
 475     {
 476         dwAttributes = SFGAO_FILESYSANCESTOR | SFGAO_FILESYSTEM;
 477         r = IShellFolder_GetAttributesOf(lptvid->lpsfParent, 1,
 478                                 (LPCITEMIDLIST*)&lptvid->lpi, &dwAttributes);
 479         if (FAILED(r) || !(dwAttributes & (SFGAO_FILESYSANCESTOR|SFGAO_FILESYSTEM)))
 480             bEnabled = FALSE;
 481     }
 482     if (lpBrowseInfo->ulFlags & BIF_RETURNONLYFSDIRS)
 483     {
 484         dwAttributes = SFGAO_FOLDER | SFGAO_FILESYSTEM;
 485         r = IShellFolder_GetAttributesOf(lptvid->lpsfParent, 1,
 486                                 (LPCITEMIDLIST*)&lptvid->lpi, &dwAttributes);
 487         if (FAILED(r) ||
 488             ((dwAttributes & (SFGAO_FOLDER|SFGAO_FILESYSTEM)) != (SFGAO_FOLDER|SFGAO_FILESYSTEM)))
 489         {
 490             bEnabled = FALSE;
 491         }
 492     }
 493     SendMessageW(info->hWnd, BFFM_ENABLEOK, 0, bEnabled);
 494 }
 495
 496 static LRESULT BrsFolder_Treeview_Delete( browse_info *info, NMTREEVIEWW *pnmtv )
 497 {
 498     LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA)pnmtv->itemOld.lParam;
 499
 500     TRACE("TVN_DELETEITEMA/W %p\n", lptvid);
 501
 502     IShellFolder_Release(lptvid->lpsfParent);
 503     if (lptvid->pEnumIL)
 504         IEnumIDList_Release(lptvid->pEnumIL);
 505     SHFree(lptvid->lpi);
 506     SHFree(lptvid->lpifq);
 507     SHFree(lptvid);
 508     return 0;
 509 }
 510
 511 static LRESULT BrsFolder_Treeview_Expand( browse_info *info, NMTREEVIEWW *pnmtv )
 512 {
 513     IShellFolder *lpsf2 = NULL;
 514     LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
 515     HRESULT r;
 516
 517     TRACE("TVN_ITEMEXPANDINGA/W\n");
 518
 519     if ((pnmtv->itemNew.state & TVIS_EXPANDEDONCE))
 520         return 0;
 521
 522     if (!_ILIsEmpty(lptvid->lpi)) {
 523         r = IShellFolder_BindToObject( lptvid->lpsfParent, lptvid->lpi, 0,
 524                                        &IID_IShellFolder, (void**)&lpsf2 );
 525     } else {
 526         lpsf2 = lptvid->lpsfParent;
 527         IShellFolder_AddRef(lpsf2);
 528         r = S_OK;
 529     }
 530
 531     if (SUCCEEDED(r))
 532     {
 533         FillTreeView( info, lpsf2, lptvid->lpifq, pnmtv->itemNew.hItem, lptvid->pEnumIL);
 534         IShellFolder_Release( lpsf2 );
 535     }
 536
 537     /* My Computer is already sorted and trying to do a simple text
 538      * sort will only mess things up */
 539     if (!_ILIsMyComputer(lptvid->lpi))
 540         SendMessageW( info->hwndTreeView, TVM_SORTCHILDREN,
 541                       FALSE, (LPARAM)pnmtv->itemNew.hItem );
 542
 543     return 0;
 544 }
 545
 546 static HRESULT BrsFolder_Treeview_Changed( browse_info *info, NMTREEVIEWW *pnmtv )
 547 {
 548     LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
 549
 550     lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
 551     info->pidlRet = lptvid->lpifq;
 552     browsefolder_callback( info->lpBrowseInfo, info->hWnd, BFFM_SELCHANGED,
 553                            (LPARAM)info->pidlRet );
 554     BrsFolder_CheckValidSelection( info, lptvid );
 555     return 0;
 556 }
 557
 558 static LRESULT BrsFolder_OnNotify( browse_info *info, UINT CtlID, LPNMHDR lpnmh )
 559 {
 560     NMTREEVIEWW *pnmtv = (NMTREEVIEWW *)lpnmh;
 561
 562     TRACE("%p %x %p msg=%x\n", info, CtlID, lpnmh, pnmtv->hdr.code);
 563
 564     if (pnmtv->hdr.idFrom != IDD_TREEVIEW)
 565         return 0;
 566
 567     switch (pnmtv->hdr.code)
 568     {
 569     case TVN_DELETEITEMA:
 570     case TVN_DELETEITEMW:
 571         return BrsFolder_Treeview_Delete( info, pnmtv );
 572
 573     case TVN_ITEMEXPANDINGA:
 574     case TVN_ITEMEXPANDINGW:
 575         return BrsFolder_Treeview_Expand( info, pnmtv );
 576
 577     case TVN_SELCHANGEDA:
 578     case TVN_SELCHANGEDW:
 579         return BrsFolder_Treeview_Changed( info, pnmtv );
 580
 581     default:
 582         WARN("unhandled (%d)\n", pnmtv->hdr.code);
 583         break;
 584     }
 585
 586     return 0;
 587 }
 588
 589
 590 static BOOL BrsFolder_OnCreate( HWND hWnd, browse_info *info )
 591 {
 592     LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;
 593
 594     info->hWnd = hWnd;
 595     SetPropW( hWnd, szBrowseFolderInfo, info );
 596
 597     if (lpBrowseInfo->ulFlags & BIF_NEWDIALOGSTYLE)
 598         FIXME("flags BIF_NEWDIALOGSTYLE partially implemented\n");
 599     if (lpBrowseInfo->ulFlags & ~SUPPORTEDFLAGS)
 600         FIXME("flags %x not implemented\n", lpBrowseInfo->ulFlags & ~SUPPORTEDFLAGS);
 601
 602     if (lpBrowseInfo->ulFlags & BIF_NEWDIALOGSTYLE)
 603     {
 604         RECT rcWnd;
 605
 606         info->layout = LayoutInit(hWnd, g_layout_info, LAYOUT_INFO_COUNT);
 607
 608         /* TODO: Windows allows shrinking the windows a bit */
 609         GetWindowRect(hWnd, &rcWnd);
 610         info->szMin.cx = rcWnd.right - rcWnd.left;
 611         info->szMin.cy = rcWnd.bottom - rcWnd.top;
 612     }
 613     else
 614     {
 615         info->layout = NULL;
 616     }
 617
 618     if (lpBrowseInfo->lpszTitle)
 619         SetWindowTextW( GetDlgItem(hWnd, IDD_TITLE), lpBrowseInfo->lpszTitle );
 620     else
 621         ShowWindow( GetDlgItem(hWnd, IDD_TITLE), SW_HIDE );
 622
 623     if (!(lpBrowseInfo->ulFlags & BIF_STATUSTEXT)
 624         || (lpBrowseInfo->ulFlags & BIF_NEWDIALOGSTYLE))
 625         ShowWindow( GetDlgItem(hWnd, IDD_STATUS), SW_HIDE );
 626
 627     /* Hide "Make New Folder" Button? */
 628     if ((lpBrowseInfo->ulFlags & BIF_NONEWFOLDERBUTTON)
 629         || !(lpBrowseInfo->ulFlags & BIF_NEWDIALOGSTYLE))
 630         ShowWindow( GetDlgItem(hWnd, IDD_MAKENEWFOLDER), SW_HIDE );
 631
 632     /* Hide the editbox? */
 633     if (!(lpBrowseInfo->ulFlags & BIF_EDITBOX))
 634     {
 635         ShowWindow( GetDlgItem(hWnd, IDD_FOLDER), SW_HIDE );
 636         ShowWindow( GetDlgItem(hWnd, IDD_FOLDERTEXT), SW_HIDE );
 637     }
 638
 639     info->hwndTreeView = GetDlgItem( hWnd, IDD_TREEVIEW );
 640     if (info->hwndTreeView)
 641     {
 642         InitializeTreeView( info );
 643
 644         /* Resize the treeview if there's not editbox */
 645         if ((lpBrowseInfo->ulFlags & BIF_NEWDIALOGSTYLE)
 646             && !(lpBrowseInfo->ulFlags & BIF_EDITBOX))
 647         {
 648             RECT rc;
 649             GetClientRect(info->hwndTreeView, &rc);
 650             SetWindowPos(info->hwndTreeView, HWND_TOP, 0, 0,
 651                          rc.right, rc.bottom + 40, SWP_NOMOVE);
 652         }
 653     }
 654     else
 655         ERR("treeview control missing!\n");
 656
 657     browsefolder_callback( info->lpBrowseInfo, hWnd, BFFM_INITIALIZED, 0 );
 658
 659     return TRUE;
 660 }
 661
 662 static BOOL BrsFolder_OnCommand( browse_info *info, UINT id )
 663 {
 664     LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;
 665
 666     switch (id)
 667     {
 668     case IDOK:
 669         /* The original pidl is owned by the treeview and will be free'd. */
 670         info->pidlRet = ILClone(info->pidlRet);
 671         if (info->pidlRet == NULL) /* A null pidl would mean a cancel */
 672             info->pidlRet = _ILCreateDesktop();
 673         pdump( info->pidlRet );
 674         if (lpBrowseInfo->pszDisplayName)
 675             SHGetPathFromIDListW( info->pidlRet, lpBrowseInfo->pszDisplayName );
 676         EndDialog( info->hWnd, 1 );
 677         return TRUE;
 678
 679     case IDCANCEL:
 680         EndDialog( info->hWnd, 0 );
 681         return TRUE;
 682
 683     case IDD_MAKENEWFOLDER:
 684         FIXME("make new folder not implemented\n");
 685         return TRUE;
 686     }
 687     return FALSE;
 688 }
 689
 690 static BOOL BrsFolder_OnSetExpanded(browse_info *info, LPVOID selection,
 691     BOOL is_str, HTREEITEM *pItem)
 692 {
 693     LPITEMIDLIST pidlSelection = selection;
 694     LPCITEMIDLIST pidlCurrent, pidlRoot;
 695     TVITEMEXW item;
 696     BOOL bResult = FALSE;
 697
 698     /* If 'selection' is a string, convert to a Shell ID List. */
 699     if (is_str) {
 700         IShellFolder *psfDesktop;
 701         HRESULT hr;
 702
 703         hr = SHGetDesktopFolder(&psfDesktop);
 704         if (FAILED(hr))
 705             goto done;
 706
 707         hr = IShellFolder_ParseDisplayName(psfDesktop, NULL, NULL,
 708                      selection, NULL, &pidlSelection, NULL);
 709         IShellFolder_Release(psfDesktop);
 710         if (FAILED(hr))
 711             goto done;
 712     }
 713
 714     /* Move pidlCurrent behind the SHITEMIDs in pidlSelection, which are the root of
 715      * the sub-tree currently displayed. */
 716     pidlRoot = info->lpBrowseInfo->pidlRoot;
 717     pidlCurrent = pidlSelection;
 718     while (!_ILIsEmpty(pidlRoot) && _ILIsEqualSimple(pidlRoot, pidlCurrent)) {
 719         pidlRoot = ILGetNext(pidlRoot);
 720         pidlCurrent = ILGetNext(pidlCurrent);
 721     }
 722
 723     /* The given ID List is not part of the SHBrowseForFolder's current sub-tree. */
 724     if (!_ILIsEmpty(pidlRoot))
 725         goto done;
 726
 727     /* Initialize item to point to the first child of the root folder. */
 728     memset(&item, 0, sizeof(item));
 729     item.mask = TVIF_PARAM;
 730     item.hItem = (HTREEITEM)SendMessageW(info->hwndTreeView, TVM_GETNEXTITEM, TVGN_ROOT, 0);
 731
 732     if (item.hItem)
 733         item.hItem = (HTREEITEM)SendMessageW(info->hwndTreeView, TVM_GETNEXTITEM, TVGN_CHILD,
 734                                              (LPARAM)item.hItem);
 735
 736     /* Walk the tree along the nodes corresponding to the remaining ITEMIDLIST */
 737     while (item.hItem && !_ILIsEmpty(pidlCurrent)) {
 738         LPTV_ITEMDATA pItemData;
 739
 740         SendMessageW(info->hwndTreeView, TVM_GETITEMW, 0, (LPARAM)&item);
 741         pItemData = (LPTV_ITEMDATA)item.lParam;
 742
 743         if (_ILIsEqualSimple(pItemData->lpi, pidlCurrent)) {
 744             pidlCurrent = ILGetNext(pidlCurrent);
 745             if (!_ILIsEmpty(pidlCurrent)) {
 746                 /* Only expand current node and move on to it's first child,
 747                  * if we didn't already reach the last SHITEMID */
 748                 SendMessageW(info->hwndTreeView, TVM_EXPAND, TVE_EXPAND, (LPARAM)item.hItem);
 749                 item.hItem = (HTREEITEM)SendMessageW(info->hwndTreeView, TVM_GETNEXTITEM, TVGN_CHILD,
 750                                              (LPARAM)item.hItem);
 751             }
 752         } else {
 753             item.hItem = (HTREEITEM)SendMessageW(info->hwndTreeView, TVM_GETNEXTITEM, TVGN_NEXT,
 754                                              (LPARAM)item.hItem);
 755         }
 756     }
 757
 758     if (_ILIsEmpty(pidlCurrent) && item.hItem)
 759         bResult = TRUE;
 760
 761 done:
 762     if (pidlSelection && pidlSelection != selection)
 763         ILFree(pidlSelection);
 764
 765     if (pItem)
 766         *pItem = item.hItem;
 767
 768     return bResult;
 769 }
 770
 771 static BOOL BrsFolder_OnSetSelectionW(browse_info *info, LPVOID selection, BOOL is_str) {
 772     HTREEITEM hItem;
 773     BOOL bResult;
 774
 775     bResult = BrsFolder_OnSetExpanded(info, selection, is_str, &hItem);
 776     if (bResult)
 777         SendMessageW(info->hwndTreeView, TVM_SELECTITEM, TVGN_CARET, (LPARAM)hItem );
 778     return bResult;
 779 }
 780
 781 static BOOL BrsFolder_OnSetSelectionA(browse_info *info, LPVOID selection, BOOL is_str) {
 782     LPWSTR selectionW = NULL;
 783     BOOL result = FALSE;
 784     int length;
 785
 786     if (!is_str)
 787         return BrsFolder_OnSetSelectionW(info, selection, is_str);
 788
 789     if ((length = MultiByteToWideChar(CP_ACP, 0, selection, -1, NULL, 0)) &&
 790         (selectionW = HeapAlloc(GetProcessHeap(), 0, length * sizeof(WCHAR))) &&
 791         MultiByteToWideChar(CP_ACP, 0, selection, -1, selectionW, length))
 792     {
 793         result = BrsFolder_OnSetSelectionW(info, selectionW, is_str);
 794     }
 795
 796     HeapFree(GetProcessHeap(), 0, selectionW);
 797     return result;
 798 }
 799
 800 static BOOL BrsFolder_OnWindowPosChanging(browse_info *info, WINDOWPOS *pos)
 801 {
 802     if ((info->lpBrowseInfo->ulFlags & BIF_NEWDIALOGSTYLE) && !(pos->flags & SWP_NOSIZE))
 803     {
 804         if (pos->cx < info->szMin.cx)
 805             pos->cx = info->szMin.cx;
 806         if (pos->cy < info->szMin.cy)
 807             pos->cy = info->szMin.cy;
 808     }
 809     return 0;
 810 }
 811
 812 static INT BrsFolder_OnDestroy(browse_info *info)
 813 {
 814     if (info->layout)
 815     {
 816         SHFree(info->layout);
 817         info->layout = NULL;
 818     }
 819
 820     return 0;
 821 }
 822
 823 /*************************************************************************
 824  *             BrsFolderDlgProc32  (not an exported API function)
 825  */
 826 static INT_PTR CALLBACK BrsFolderDlgProc( HWND hWnd, UINT msg, WPARAM wParam,
 827                                           LPARAM lParam )
 828 {
 829     browse_info *info;
 830
 831     TRACE("hwnd=%p msg=%04x 0x%08lx 0x%08lx\n", hWnd, msg, wParam, lParam );
 832
 833     if (msg == WM_INITDIALOG)
 834         return BrsFolder_OnCreate( hWnd, (browse_info*) lParam );
 835
 836     info = GetPropW( hWnd, szBrowseFolderInfo );
 837
 838     switch (msg)
 839     {
 840     case WM_NOTIFY:
 841         return BrsFolder_OnNotify( info, (UINT)wParam, (LPNMHDR)lParam);
 842
 843     case WM_COMMAND:
 844         return BrsFolder_OnCommand( info, wParam );
 845
 846     case WM_WINDOWPOSCHANGING:
 847         return BrsFolder_OnWindowPosChanging( info, (WINDOWPOS *)lParam);
 848
 849     case WM_SIZE:
 850         if (info->layout)  /* new style dialogs */
 851             LayoutUpdate(hWnd, info->layout, g_layout_info, LAYOUT_INFO_COUNT);
 852         return 0;
 853
 854     case BFFM_SETSTATUSTEXTA:
 855         TRACE("Set status %s\n", debugstr_a((LPSTR)lParam));
 856         SetWindowTextA(GetDlgItem(hWnd, IDD_STATUS), (LPSTR)lParam);
 857         break;
 858
 859     case BFFM_SETSTATUSTEXTW:
 860         TRACE("Set status %s\n", debugstr_w((LPWSTR)lParam));
 861         SetWindowTextW(GetDlgItem(hWnd, IDD_STATUS), (LPWSTR)lParam);
 862         break;
 863
 864     case BFFM_ENABLEOK:
 865         TRACE("Enable %ld\n", lParam);
 866         EnableWindow(GetDlgItem(hWnd, 1), (lParam)?TRUE:FALSE);
 867         break;
 868
 869     case BFFM_SETOKTEXT: /* unicode only */
 870         TRACE("Set OK text %s\n", debugstr_w((LPWSTR)wParam));
 871         SetWindowTextW(GetDlgItem(hWnd, 1), (LPWSTR)wParam);
 872         break;
 873
 874     case BFFM_SETSELECTIONA:
 875         return BrsFolder_OnSetSelectionA(info, (LPVOID)lParam, (BOOL)wParam);
 876
 877     case BFFM_SETSELECTIONW:
 878         return BrsFolder_OnSetSelectionW(info, (LPVOID)lParam, (BOOL)wParam);
 879
 880     case BFFM_SETEXPANDED: /* unicode only */
 881         return BrsFolder_OnSetExpanded(info, (LPVOID)lParam, (BOOL)wParam, NULL);
 882
 883     case WM_DESTROY:
 884         return BrsFolder_OnDestroy(info);
 885     }
 886     return FALSE;
 887 }
 888
 889 static const WCHAR swBrowseTemplateName[] = {
 890     'S','H','B','R','S','F','O','R','F','O','L','D','E','R','_','M','S','G','B','O','X',0};
 891 static const WCHAR swNewBrowseTemplateName[] = {
 892     'S','H','N','E','W','B','R','S','F','O','R','F','O','L','D','E','R','_','M','S','G','B','O','X',0};
 893
 894 /*************************************************************************
 895  * SHBrowseForFolderA [SHELL32.@]
 896  * SHBrowseForFolder  [SHELL32.@]
 897  */
 898 LPITEMIDLIST WINAPI SHBrowseForFolderA (LPBROWSEINFOA lpbi)
 899 {
 900     BROWSEINFOW bi;
 901     LPITEMIDLIST lpid;
 902     INT len;
 903     LPWSTR title;
 904
 905     TRACE("%p\n", lpbi);
 906
 907     bi.hwndOwner = lpbi->hwndOwner;
 908     bi.pidlRoot = lpbi->pidlRoot;
 909     if (lpbi->pszDisplayName)
 910     {
 911         bi.pszDisplayName = HeapAlloc( GetProcessHeap(), 0, MAX_PATH * sizeof(WCHAR) );
 912         MultiByteToWideChar( CP_ACP, 0, lpbi->pszDisplayName, -1, bi.pszDisplayName, MAX_PATH );
 913     }
 914     else
 915         bi.pszDisplayName = NULL;
 916
 917     if (lpbi->lpszTitle)
 918     {
 919         len = MultiByteToWideChar( CP_ACP, 0, lpbi->lpszTitle, -1, NULL, 0 );
 920         title = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 921         MultiByteToWideChar( CP_ACP, 0, lpbi->lpszTitle, -1, title, len );
 922     }
 923     else
 924         title = NULL;
 925
 926     bi.lpszTitle = title;
 927     bi.ulFlags = lpbi->ulFlags;
 928     bi.lpfn = lpbi->lpfn;
 929     bi.lParam = lpbi->lParam;
 930     bi.iImage = lpbi->iImage;
 931     lpid = SHBrowseForFolderW( &bi );
 932     if (bi.pszDisplayName)
 933     {
 934         WideCharToMultiByte( CP_ACP, 0, bi.pszDisplayName, -1,
 935                              lpbi->pszDisplayName, MAX_PATH, 0, NULL);
 936         HeapFree( GetProcessHeap(), 0, bi.pszDisplayName );
 937     }
 938     HeapFree(GetProcessHeap(), 0, title);
 939     lpbi->iImage = bi.iImage;
 940     return lpid;
 941 }
 942
 943
 944 /*************************************************************************
 945  * SHBrowseForFolderW [SHELL32.@]
 946  *
 947  * NOTES
 948  *  crashes when passed a null pointer
 949  */
 950 LPITEMIDLIST WINAPI SHBrowseForFolderW (LPBROWSEINFOW lpbi)
 951 {
 952     browse_info info;
 953     DWORD r;
 954     HRESULT hr;
 955     const WCHAR * templateName;
 956
 957     info.hWnd = 0;
 958     info.pidlRet = NULL;
 959     info.lpBrowseInfo = lpbi;
 960     info.hwndTreeView = NULL;
 961
 962     hr = OleInitialize(NULL);
 963
 964     if (lpbi->ulFlags & BIF_NEWDIALOGSTYLE)
 965         templateName = swNewBrowseTemplateName;
 966     else
 967         templateName = swBrowseTemplateName;
 968     r = DialogBoxParamW( shell32_hInstance, templateName, lpbi->hwndOwner,
 969                          BrsFolderDlgProc, (LPARAM)&info );
 970     if (SUCCEEDED(hr))
 971         OleUninitialize();
 972     if (!r)
 973         return NULL;
 974
 975     return info.pidlRet;
 976 }