src/msw/filedlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/filedlg.cpp
   3 // Purpose:     wxFileDialog
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "filedlg.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_FILEDLG && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/utils.h"
  35     #include "wx/msgdlg.h"
  36     #include "wx/filedlg.h"
  37     #include "wx/filefn.h"
  38     #include "wx/intl.h"
  39     #include "wx/log.h"
  40     #include "wx/app.h"
  41 #endif
  42
  43 #include "wx/msw/wrapcdlg.h"
  44
  45 #include <stdlib.h>
  46 #include <string.h>
  47
  48 #include "wx/filename.h"
  49 #include "wx/tokenzr.h"
  50 #include "wx/math.h"
  51
  52 #include "wx/msw/missing.h"
  53
  54 // ----------------------------------------------------------------------------
  55 // constants
  56 // ----------------------------------------------------------------------------
  57
  58 #ifdef __WIN32__
  59 # define wxMAXPATH   65534
  60 #else
  61 # define wxMAXPATH   1024
  62 #endif
  63
  64 # define wxMAXFILE   1024
  65
  66 # define wxMAXEXT    5
  67
  68 // ----------------------------------------------------------------------------
  69 // globals
  70 // ----------------------------------------------------------------------------
  71
  72 // standard dialog size
  73 static wxRect gs_rectDialog(0, 0, 428, 266);
  74
  75 // ============================================================================
  76 // implementation
  77 // ============================================================================
  78
  79 IMPLEMENT_CLASS(wxFileDialog, wxFileDialogBase)
  80
  81 // ----------------------------------------------------------------------------
  82 // hook function for moving the dialog
  83 // ----------------------------------------------------------------------------
  84
  85 UINT APIENTRY
  86 wxFileDialogHookFunction(HWND      hDlg,
  87                          UINT      iMsg,
  88                          WPARAM    WXUNUSED(wParam),
  89                          LPARAM    lParam)
  90 {
  91     HWND   hwndDialog;
  92     hwndDialog = ::GetParent( hDlg );
  93     switch (iMsg)
  94     {
  95         case WM_DESTROY:
  96             {
  97                 RECT dlgRect;
  98                 GetWindowRect( hwndDialog, & dlgRect );
  99                 gs_rectDialog.x = dlgRect.left;
 100                 gs_rectDialog.y = dlgRect.top;
 101                 gs_rectDialog.width = dlgRect.right - dlgRect.left;
 102                 gs_rectDialog.height = dlgRect.bottom - dlgRect.top;
 103             }
 104             break;
 105
 106         case WM_NOTIFY:
 107             {
 108                 OFNOTIFY *   pNotifyCode;
 109                 pNotifyCode = (LPOFNOTIFY) lParam;
 110                 if (CDN_INITDONE == (pNotifyCode->hdr).code)
 111                 {
 112                     SetWindowPos( hwndDialog, HWND_TOP,
 113                                   gs_rectDialog.x,
 114                                   gs_rectDialog.y,
 115                                   gs_rectDialog.width,
 116                                   gs_rectDialog.height,
 117                                   SWP_NOZORDER|SWP_NOSIZE);
 118                  }
 119             }
 120             break;
 121     }
 122
 123     // do the default processing
 124     return 0;
 125 }
 126
 127 // ----------------------------------------------------------------------------
 128 // wxFileDialog
 129 // ----------------------------------------------------------------------------
 130
 131 wxFileDialog::wxFileDialog(wxWindow *parent,
 132                            const wxString& message,
 133                            const wxString& defaultDir,
 134                            const wxString& defaultFileName,
 135                            const wxString& wildCard,
 136                            long style,
 137                            const wxPoint& pos)
 138             : wxFileDialogBase(parent, message, defaultDir, defaultFileName,
 139                                wildCard, style, pos)
 140
 141 {
 142     if ( ( m_dialogStyle & wxMULTIPLE ) && ( m_dialogStyle & wxSAVE ) )
 143         m_dialogStyle &= ~wxMULTIPLE;
 144
 145     m_bMovedWindow = false;
 146
 147     // Must set to zero, otherwise the wx routines won't size the window
 148     // the second time you call the file dialog, because it thinks it is
 149     // already at the requested size.. (when centering)
 150     gs_rectDialog.x =
 151     gs_rectDialog.y = 0;
 152
 153 }
 154 void wxFileDialog::GetPaths(wxArrayString& paths) const
 155 {
 156     paths.Empty();
 157
 158     wxString dir(m_dir);
 159     if ( m_dir.Last() != _T('\\') )
 160         dir += _T('\\');
 161
 162     size_t count = m_fileNames.GetCount();
 163     for ( size_t n = 0; n < count; n++ )
 164     {
 165         if (wxFileName(m_fileNames[n]).IsAbsolute())
 166             paths.Add(m_fileNames[n]);
 167         else
 168             paths.Add(dir + m_fileNames[n]);
 169     }
 170 }
 171
 172 void wxFileDialog::GetFilenames(wxArrayString& files) const
 173 {
 174     files = m_fileNames;
 175 }
 176
 177 void wxFileDialog::SetPath(const wxString& path)
 178 {
 179     wxString ext;
 180     wxSplitPath(path, &m_dir, &m_fileName, &ext);
 181     if ( !ext.empty() )
 182         m_fileName << _T('.') << ext;
 183 }
 184
 185 void wxFileDialog::DoGetPosition( int *x, int *y ) const
 186 {
 187     *x = gs_rectDialog.x;
 188     *y = gs_rectDialog.y;
 189 }
 190
 191
 192 void wxFileDialog::DoGetSize(int *width, int *height) const
 193 {
 194     *width  = gs_rectDialog.width;
 195     *height = gs_rectDialog.height;
 196 }
 197
 198 void wxFileDialog::DoMoveWindow(int x, int y, int WXUNUSED(width), int WXUNUSED(height))
 199 {
 200     m_bMovedWindow = true;
 201
 202     gs_rectDialog.x = x;
 203     gs_rectDialog.y = y;
 204
 205     /*
 206         The width and height can not be set by the programmer
 207         its just not possible.  But the program can get the
 208         size of the Dlg after it has been shown, in case they need
 209         that data.
 210     */
 211 }
 212
 213 int wxFileDialog::ShowModal()
 214 {
 215     HWND hWnd = 0;
 216     if (m_parent) hWnd = (HWND) m_parent->GetHWND();
 217     if (!hWnd && wxTheApp->GetTopWindow())
 218         hWnd = (HWND) wxTheApp->GetTopWindow()->GetHWND();
 219
 220     static wxChar fileNameBuffer [ wxMAXPATH ];           // the file-name
 221     wxChar        titleBuffer    [ wxMAXFILE+1+wxMAXEXT ];  // the file-name, without path
 222
 223     *fileNameBuffer = wxT('\0');
 224     *titleBuffer    = wxT('\0');
 225
 226 #if WXWIN_COMPATIBILITY_2_4
 227     long msw_flags = 0;
 228     if ( (m_dialogStyle & wxHIDE_READONLY) || (m_dialogStyle & wxSAVE) )
 229         msw_flags |= OFN_HIDEREADONLY;
 230 #else
 231     long msw_flags = OFN_HIDEREADONLY;
 232 #endif
 233
 234     if ( m_dialogStyle & wxFILE_MUST_EXIST )
 235         msw_flags |= OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
 236     /*
 237         If the window has been moved the programmer is probably
 238         trying to center or position it.  Thus we set the callback
 239         or hook function so that we can actually adjust the position.
 240         Without moving or centering the dlg, it will just stay
 241         in the upper left of the frame, it does not center
 242         automatically..  One additional note, when the hook is
 243         enabled, the PLACES BAR in the dlg (shown on later versions
 244         of windows (2000 and XP) will automatically be turned off
 245         according to the MSDN docs.  This is normal.  If the
 246         programmer needs the PLACES BAR (left side of dlg) they
 247         just shouldn't move or center the dlg.
 248     */
 249     if (m_bMovedWindow) // we need these flags.
 250     {
 251         msw_flags |= OFN_EXPLORER|OFN_ENABLEHOOK;
 252 #ifndef __WXWINCE__
 253         msw_flags |= OFN_ENABLESIZING;
 254 #endif
 255     }
 256
 257     if (m_dialogStyle & wxMULTIPLE )
 258     {
 259         // OFN_EXPLORER must always be specified with OFN_ALLOWMULTISELECT
 260         msw_flags |= OFN_EXPLORER | OFN_ALLOWMULTISELECT;
 261     }
 262
 263     // if wxCHANGE_DIR flag is not given we shouldn't change the CWD which the
 264     // standard dialog does by default
 265     if ( !(m_dialogStyle & wxCHANGE_DIR) )
 266     {
 267         msw_flags |= OFN_NOCHANGEDIR;
 268     }
 269
 270     if ( m_dialogStyle & wxOVERWRITE_PROMPT )
 271     {
 272         msw_flags |= OFN_OVERWRITEPROMPT;
 273     }
 274
 275     OPENFILENAME of;
 276     wxZeroMemory(of);
 277
 278     // the OPENFILENAME struct has been extended in newer version of
 279     // comcdlg32.dll, but as we don't use the extended fields anyhow, set
 280     // the struct size to the old value - otherwise, the programs compiled
 281     // with new headers will not work with the old libraries
 282 #if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0500)
 283     of.lStructSize       = sizeof(OPENFILENAME) -
 284                            (sizeof(void *) + 2*sizeof(DWORD));
 285 #else // old headers
 286     of.lStructSize       = sizeof(OPENFILENAME);
 287 #endif
 288
 289     of.hwndOwner         = hWnd;
 290     of.lpstrTitle        = WXSTRINGCAST m_message;
 291     of.lpstrFileTitle    = titleBuffer;
 292     of.nMaxFileTitle     = wxMAXFILE + 1 + wxMAXEXT;    // Windows 3.0 and 3.1
 293
 294     // Convert forward slashes to backslashes (file selector doesn't like
 295     // forward slashes) and also squeeze multiple consecutive slashes into one
 296     // as it doesn't like two backslashes in a row neither
 297
 298     wxString  dir;
 299     size_t    i, len = m_dir.length();
 300     dir.reserve(len);
 301     for ( i = 0; i < len; i++ )
 302     {
 303         wxChar ch = m_dir[i];
 304         switch ( ch )
 305         {
 306             case _T('/'):
 307                 // convert to backslash
 308                 ch = _T('\\');
 309
 310                 // fall through
 311
 312             case _T('\\'):
 313                 while ( i < len - 1 )
 314                 {
 315                     wxChar chNext = m_dir[i + 1];
 316                     if ( chNext != _T('\\') && chNext != _T('/') )
 317                         break;
 318
 319                     // ignore the next one, unless it is at the start of a UNC path
 320                     if (i > 0)
 321                         i++;
 322                     else
 323                         break;
 324                 }
 325                 // fall through
 326
 327             default:
 328                 // normal char
 329                 dir += ch;
 330         }
 331     }
 332
 333     of.lpstrInitialDir   = dir.c_str();
 334
 335     of.Flags             = msw_flags;
 336     of.lpfnHook          = wxFileDialogHookFunction;
 337
 338     wxArrayString wildDescriptions, wildFilters;
 339
 340     size_t items = wxParseCommonDialogsFilter(m_wildCard, wildDescriptions, wildFilters);
 341
 342     wxASSERT_MSG( items > 0 , _T("empty wildcard list") );
 343
 344     wxString filterBuffer;
 345
 346     for (i = 0; i < items ; i++)
 347     {
 348         filterBuffer += wildDescriptions[i];
 349         filterBuffer += wxT("|");
 350         filterBuffer += wildFilters[i];
 351         filterBuffer += wxT("|");
 352     }
 353
 354     // Replace | with \0
 355     for (i = 0; i < filterBuffer.Len(); i++ ) {
 356         if ( filterBuffer.GetChar(i) == wxT('|') ) {
 357             filterBuffer[i] = wxT('\0');
 358         }
 359     }
 360
 361     of.lpstrFilter  = (LPTSTR)filterBuffer.c_str();
 362     of.nFilterIndex = m_filterIndex + 1;
 363
 364     //=== Setting defaultFileName >>=========================================
 365
 366     wxStrncpy( fileNameBuffer, (const wxChar *)m_fileName, wxMAXPATH-1 );
 367     fileNameBuffer[ wxMAXPATH-1 ] = wxT('\0');
 368
 369     of.lpstrFile = fileNameBuffer;  // holds returned filename
 370     of.nMaxFile  = wxMAXPATH;
 371
 372     // we must set the default extension because otherwise Windows would check
 373     // for the existing of a wrong file with wxOVERWRITE_PROMPT (i.e. if the
 374     // user types "foo" and the default extension is ".bar" we should force it
 375     // to check for "foo.bar" existence and not "foo")
 376     wxString defextBuffer; // we need it to be alive until GetSaveFileName()!
 377     if (m_dialogStyle & wxSAVE)
 378     {
 379         const wxChar* extension = filterBuffer;
 380         int maxFilter = (int)(of.nFilterIndex*2L) - 1;
 381
 382         for( int i = 0; i < maxFilter; i++ )           // get extension
 383             extension = extension + wxStrlen( extension ) + 1;
 384
 385         // use dummy name a to avoid assert in AppendExtension
 386         defextBuffer = AppendExtension(wxT("a"), extension);
 387         if (defextBuffer.StartsWith(wxT("a.")))
 388         {
 389             defextBuffer.Mid(2);
 390             of.lpstrDefExt = defextBuffer.c_str();
 391         }
 392     }
 393
 394     //== Execute FileDialog >>=================================================
 395
 396     bool success = (m_dialogStyle & wxSAVE ? GetSaveFileName(&of)
 397                                            : GetOpenFileName(&of)) != 0;
 398
 399     DWORD errCode = CommDlgExtendedError();
 400
 401 #ifdef __WIN32__
 402     if (!success && (errCode == CDERR_STRUCTSIZE))
 403     {
 404         // The struct size has changed so try a smaller or bigger size
 405
 406         int oldStructSize = of.lStructSize;
 407         of.lStructSize       = oldStructSize - (sizeof(void *) + 2*sizeof(DWORD));
 408         success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
 409                                             : (GetOpenFileName(&of) != 0);
 410         errCode = CommDlgExtendedError();
 411
 412         if (!success && (errCode == CDERR_STRUCTSIZE))
 413         {
 414             of.lStructSize       = oldStructSize + (sizeof(void *) + 2*sizeof(DWORD));
 415             success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
 416                                             : (GetOpenFileName(&of) != 0);
 417         }
 418     }
 419 #endif // __WIN32__
 420
 421     if ( success )
 422     {
 423         m_fileNames.Empty();
 424
 425         if ( ( m_dialogStyle & wxMULTIPLE ) &&
 426 #if defined(OFN_EXPLORER)
 427              ( fileNameBuffer[of.nFileOffset-1] == wxT('\0') )
 428 #else
 429              ( fileNameBuffer[of.nFileOffset-1] == wxT(' ') )
 430 #endif // OFN_EXPLORER
 431            )
 432         {
 433 #if defined(OFN_EXPLORER)
 434             m_dir = fileNameBuffer;
 435             i = of.nFileOffset;
 436             m_fileName = &fileNameBuffer[i];
 437             m_fileNames.Add(m_fileName);
 438             i += m_fileName.Len() + 1;
 439
 440             while (fileNameBuffer[i] != wxT('\0'))
 441             {
 442                 m_fileNames.Add(&fileNameBuffer[i]);
 443                 i += wxStrlen(&fileNameBuffer[i]) + 1;
 444             }
 445 #else
 446             wxStringTokenizer toke(fileNameBuffer, _T(" \t\r\n"));
 447             m_dir = toke.GetNextToken();
 448             m_fileName = toke.GetNextToken();
 449             m_fileNames.Add(m_fileName);
 450
 451             while (toke.HasMoreTokens())
 452                 m_fileNames.Add(toke.GetNextToken());
 453 #endif // OFN_EXPLORER
 454
 455             wxString dir(m_dir);
 456             if ( m_dir.Last() != _T('\\') )
 457                 dir += _T('\\');
 458
 459             m_path = dir + m_fileName;
 460             m_filterIndex = (int)of.nFilterIndex - 1;
 461         }
 462         else
 463         {
 464             //=== Adding the correct extension >>=================================
 465
 466             m_filterIndex = (int)of.nFilterIndex - 1;
 467
 468             if ( !of.nFileExtension ||
 469                  (of.nFileExtension && fileNameBuffer[of.nFileExtension] == wxT('\0')) )
 470             {
 471                 // User has typed a filename without an extension:
 472                 const wxChar* extension = filterBuffer;
 473                 int   maxFilter = (int)(of.nFilterIndex*2L) - 1;
 474
 475                 for( int i = 0; i < maxFilter; i++ )           // get extension
 476                     extension = extension + wxStrlen( extension ) + 1;
 477
 478                 m_fileName = AppendExtension(fileNameBuffer, extension);
 479                 wxStrncpy(fileNameBuffer, m_fileName.c_str(), wxMin(m_fileName.Len(), wxMAXPATH-1));
 480                 fileNameBuffer[wxMin(m_fileName.Len(), wxMAXPATH-1)] = wxT('\0');
 481             }
 482
 483             m_path = fileNameBuffer;
 484             m_fileName = wxFileNameFromPath(fileNameBuffer);
 485             m_fileNames.Add(m_fileName);
 486             m_dir = wxPathOnly(fileNameBuffer);
 487         }
 488     }
 489     else
 490     {
 491         // common dialog failed - why?
 492 #ifdef __WXDEBUG__
 493         DWORD dwErr = CommDlgExtendedError();
 494         if ( dwErr != 0 )
 495         {
 496             // this msg is only for developers
 497             wxLogError(wxT("Common dialog failed with error code %0lx."),
 498                        dwErr);
 499         }
 500         //else: it was just cancelled
 501 #endif
 502     }
 503
 504     return success ? wxID_OK : wxID_CANCEL;
 505
 506 }
 507
 508 #endif // wxUSE_FILEDLG && !(__SMARTPHONE__ && __WXWINCE__)
 509