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__)
  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/private.h"
  44
  45 #if !defined(__WIN32__) || defined(__WXWINCE__)
  46     #include <commdlg.h>
  47 #endif
  48
  49 #include <math.h>
  50 #include <stdlib.h>
  51 #include <string.h>
  52
  53 #include "wx/filename.h"
  54 #include "wx/tokenzr.h"
  55
  56 #include "wx/msw/missing.h"
  57
  58 // ----------------------------------------------------------------------------
  59 // constants
  60 // ----------------------------------------------------------------------------
  61
  62 #ifdef __WIN32__
  63 # define wxMAXPATH   65534
  64 #else
  65 # define wxMAXPATH   1024
  66 #endif
  67
  68 # define wxMAXFILE   1024
  69
  70 # define wxMAXEXT    5
  71
  72 // ----------------------------------------------------------------------------
  73 // globals
  74 // ----------------------------------------------------------------------------
  75
  76 // standard dialog size
  77 static wxRect gs_rectDialog(0, 0, 428, 266);
  78
  79 // ============================================================================
  80 // implementation
  81 // ============================================================================
  82
  83 IMPLEMENT_CLASS(wxFileDialog, wxFileDialogBase)
  84
  85 // ----------------------------------------------------------------------------
  86 // hook function for moving the dialog
  87 // ----------------------------------------------------------------------------
  88
  89 UINT APIENTRY
  90 wxFileDialogHookFunction(HWND      hDlg,
  91                          UINT      iMsg,
  92                          WPARAM    WXUNUSED(wParam),
  93                          LPARAM    lParam)
  94 {
  95     HWND   hwndDialog;
  96     hwndDialog = ::GetParent( hDlg );
  97     switch (iMsg)
  98     {
  99         case WM_DESTROY:
 100             {
 101                 RECT dlgRect;
 102                 GetWindowRect( hwndDialog, & dlgRect );
 103                 gs_rectDialog.x = dlgRect.left;
 104                 gs_rectDialog.y = dlgRect.top;
 105                 gs_rectDialog.width = dlgRect.right - dlgRect.left;
 106                 gs_rectDialog.height = dlgRect.bottom - dlgRect.top;
 107             }
 108             break;
 109
 110         case WM_NOTIFY:
 111             {
 112                 OFNOTIFY *   pNotifyCode;
 113                 pNotifyCode = (LPOFNOTIFY) lParam;
 114                 if (CDN_INITDONE == (pNotifyCode->hdr).code)
 115                 {
 116                     SetWindowPos( hwndDialog, HWND_TOP,
 117                                   gs_rectDialog.x,
 118                                   gs_rectDialog.y,
 119                                   gs_rectDialog.width,
 120                                   gs_rectDialog.height,
 121                                   SWP_NOZORDER|SWP_NOSIZE);
 122                  }
 123             }
 124             break;
 125     }
 126
 127     // do the default processing
 128     return 0;
 129 }
 130
 131 // ----------------------------------------------------------------------------
 132 // wxFileDialog
 133 // ----------------------------------------------------------------------------
 134
 135 wxFileDialog::wxFileDialog(wxWindow *parent,
 136                            const wxString& message,
 137                            const wxString& defaultDir,
 138                            const wxString& defaultFileName,
 139                            const wxString& wildCard,
 140                            long style,
 141                            const wxPoint& pos)
 142             : wxFileDialogBase(parent, message, defaultDir, defaultFileName,
 143                                wildCard, style, pos)
 144
 145 {
 146     if ( ( m_dialogStyle & wxMULTIPLE ) && ( m_dialogStyle & wxSAVE ) )
 147         m_dialogStyle &= ~wxMULTIPLE;
 148
 149     m_bMovedWindow = false;
 150
 151     // Must set to zero, otherwise the wx routines won't size the window
 152     // the second time you call the file dialog, because it thinks it is
 153     // already at the requested size.. (when centering)
 154     gs_rectDialog.x =
 155     gs_rectDialog.y = 0;
 156
 157 }
 158 void wxFileDialog::GetPaths(wxArrayString& paths) const
 159 {
 160     paths.Empty();
 161
 162     wxString dir(m_dir);
 163     if ( m_dir.Last() != _T('\\') )
 164         dir += _T('\\');
 165
 166     size_t count = m_fileNames.GetCount();
 167     for ( size_t n = 0; n < count; n++ )
 168     {
 169         if (wxFileName(m_fileNames[n]).IsAbsolute())
 170             paths.Add(m_fileNames[n]);
 171         else
 172             paths.Add(dir + m_fileNames[n]);
 173     }
 174 }
 175
 176 void wxFileDialog::GetFilenames(wxArrayString& files) const
 177 {
 178     files = m_fileNames;
 179 }
 180
 181 void wxFileDialog::SetPath(const wxString& path)
 182 {
 183     wxString ext;
 184     wxSplitPath(path, &m_dir, &m_fileName, &ext);
 185     if ( !ext.empty() )
 186         m_fileName << _T('.') << ext;
 187 }
 188
 189 void wxFileDialog::DoGetPosition( int *x, int *y ) const
 190 {
 191     *x = gs_rectDialog.x;
 192     *y = gs_rectDialog.y;
 193 }
 194
 195
 196 void wxFileDialog::DoGetSize(int *width, int *height) const
 197 {
 198     *width  = gs_rectDialog.width;
 199     *height = gs_rectDialog.height;
 200 }
 201
 202 void wxFileDialog::DoMoveWindow(int x, int y, int WXUNUSED(width), int WXUNUSED(height))
 203 {
 204     m_bMovedWindow = true;
 205
 206     gs_rectDialog.x = x;
 207     gs_rectDialog.y = y;
 208
 209     /*
 210         The width and height can not be set by the programmer
 211         its just not possible.  But the program can get the
 212         size of the Dlg after it has been shown, in case they need
 213         that data.
 214     */
 215 }
 216
 217 int wxFileDialog::ShowModal()
 218 {
 219     HWND hWnd = 0;
 220     if (m_parent) hWnd = (HWND) m_parent->GetHWND();
 221     if (!hWnd && wxTheApp->GetTopWindow())
 222         hWnd = (HWND) wxTheApp->GetTopWindow()->GetHWND();
 223
 224     static wxChar fileNameBuffer [ wxMAXPATH ];           // the file-name
 225     wxChar        titleBuffer    [ wxMAXFILE+1+wxMAXEXT ];  // the file-name, without path
 226
 227     *fileNameBuffer = wxT('\0');
 228     *titleBuffer    = wxT('\0');
 229
 230 #if WXWIN_COMPATIBILITY_2_4
 231     long msw_flags = 0;
 232     if ( (m_dialogStyle & wxHIDE_READONLY) || (m_dialogStyle & wxSAVE) )
 233         msw_flags |= OFN_HIDEREADONLY;
 234 #else
 235     long msw_flags = OFN_HIDEREADONLY;
 236 #endif
 237
 238     if ( m_dialogStyle & wxFILE_MUST_EXIST )
 239         msw_flags |= OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
 240     /*
 241         If the window has been moved the programmer is probably
 242         trying to center or position it.  Thus we set the callback
 243         or hook function so that we can actually adjust the position.
 244         Without moving or centering the dlg, it will just stay
 245         in the upper left of the frame, it does not center
 246         automatically..  One additional note, when the hook is
 247         enabled, the PLACES BAR in the dlg (shown on later versions
 248         of windows (2000 and XP) will automatically be turned off
 249         according to the MSDN docs.  This is normal.  If the
 250         programmer needs the PLACES BAR (left side of dlg) they
 251         just shouldn't move or center the dlg.
 252     */
 253     if (m_bMovedWindow) // we need these flags.
 254     {
 255         msw_flags |= OFN_EXPLORER|OFN_ENABLEHOOK;
 256 #ifndef __WXWINCE__
 257         msw_flags |= OFN_ENABLESIZING;
 258 #endif
 259     }
 260
 261     if (m_dialogStyle & wxMULTIPLE )
 262     {
 263         // OFN_EXPLORER must always be specified with OFN_ALLOWMULTISELECT
 264         msw_flags |= OFN_EXPLORER | OFN_ALLOWMULTISELECT;
 265     }
 266
 267     // if wxCHANGE_DIR flag is not given we shouldn't change the CWD which the
 268     // standard dialog does by default
 269     if ( !(m_dialogStyle & wxCHANGE_DIR) )
 270     {
 271         msw_flags |= OFN_NOCHANGEDIR;
 272     }
 273
 274     if ( m_dialogStyle & wxOVERWRITE_PROMPT )
 275     {
 276         msw_flags |= OFN_OVERWRITEPROMPT;
 277     }
 278
 279     OPENFILENAME of;
 280     wxZeroMemory(of);
 281
 282     // the OPENFILENAME struct has been extended in newer version of
 283     // comcdlg32.dll, but as we don't use the extended fields anyhow, set
 284     // the struct size to the old value - otherwise, the programs compiled
 285     // with new headers will not work with the old libraries
 286 #if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0500)
 287     of.lStructSize       = sizeof(OPENFILENAME) -
 288                            (sizeof(void *) + 2*sizeof(DWORD));
 289 #else // old headers
 290     of.lStructSize       = sizeof(OPENFILENAME);
 291 #endif
 292
 293     of.hwndOwner         = hWnd;
 294     of.lpstrTitle        = WXSTRINGCAST m_message;
 295     of.lpstrFileTitle    = titleBuffer;
 296     of.nMaxFileTitle     = wxMAXFILE + 1 + wxMAXEXT;    // Windows 3.0 and 3.1
 297
 298     // Convert forward slashes to backslashes (file selector doesn't like
 299     // forward slashes) and also squeeze multiple consecutive slashes into one
 300     // as it doesn't like two backslashes in a row neither
 301
 302     wxString    dir;
 303     size_t      i, len = m_dir.length();
 304     dir.reserve(len);
 305     for ( i = 0; i < len; i++ )
 306     {
 307         wxChar ch = m_dir[i];
 308         switch ( ch )
 309         {
 310             case _T('/'):
 311                 // convert to backslash
 312                 ch = _T('\\');
 313
 314                 // fall through
 315
 316             case _T('\\'):
 317                 while ( i < len - 1 )
 318                 {
 319                     wxChar chNext = m_dir[i + 1];
 320                     if ( chNext != _T('\\') && chNext != _T('/') )
 321                         break;
 322
 323                     // ignore the next one, unless it is at the start of a UNC path
 324                     if (i > 0)
 325                         i++;
 326                     else
 327                         break;
 328                 }
 329                 // fall through
 330
 331             default:
 332                 // normal char
 333                 dir += ch;
 334         }
 335     }
 336
 337     of.lpstrInitialDir   = dir.c_str();
 338
 339     of.Flags             = msw_flags;
 340     of.lpfnHook          = wxFileDialogHookFunction;
 341
 342     wxArrayString wildDescriptions, wildFilters;
 343
 344     size_t items = wxParseCommonDialogsFilter(m_wildCard, wildDescriptions, wildFilters);
 345
 346     wxASSERT_MSG( items > 0 , _T("empty wildcard list") );
 347
 348     wxString filterBuffer;
 349
 350     for (i = 0; i < items ; i++)
 351     {
 352         filterBuffer += wildDescriptions[i];
 353         filterBuffer += wxT("|");
 354         filterBuffer += wildFilters[i];
 355         filterBuffer += wxT("|");
 356     }
 357
 358     // Replace | with \0
 359     for (i = 0; i < filterBuffer.Len(); i++ ) {
 360         if ( filterBuffer.GetChar(i) == wxT('|') ) {
 361             filterBuffer[i] = wxT('\0');
 362         }
 363     }
 364
 365     of.lpstrFilter  = (LPTSTR)filterBuffer.c_str();
 366     of.nFilterIndex = m_filterIndex + 1;
 367
 368     //=== Setting defaultFileName >>=========================================
 369
 370     wxStrncpy( fileNameBuffer, (const wxChar *)m_fileName, wxMAXPATH-1 );
 371     fileNameBuffer[ wxMAXPATH-1 ] = wxT('\0');
 372
 373     of.lpstrFile = fileNameBuffer;  // holds returned filename
 374     of.nMaxFile  = wxMAXPATH;
 375
 376     // we must set the default extension because otherwise Windows would check
 377     // for the existing of a wrong file with wxOVERWRITE_PROMPT (i.e. if the
 378     // user types "foo" and the default extension is ".bar" we should force it
 379     // to check for "foo.bar" existence and not "foo")
 380     wxString defextBuffer; // we need it to be alive until GetSaveFileName()!
 381     if (m_dialogStyle & wxSAVE)
 382     {
 383         const wxChar* extension = filterBuffer;
 384         int maxFilter = (int)(of.nFilterIndex*2L) - 1;
 385
 386         for( int i = 0; i < maxFilter; i++ )           // get extension
 387             extension = extension + wxStrlen( extension ) + 1;
 388
 389         // use dummy name a to avoid assert in AppendExtension
 390         defextBuffer = AppendExtension(wxT("a"), extension);
 391         if (defextBuffer.StartsWith(wxT("a.")))
 392         {
 393             defextBuffer.Mid(2);
 394             of.lpstrDefExt = defextBuffer.c_str();
 395         }
 396     }
 397
 398      //== Execute FileDialog >>=================================================
 399
 400     //== Execute FileDialog >>=================================================
 401
 402     bool success = (m_dialogStyle & wxSAVE ? GetSaveFileName(&of)
 403                                            : GetOpenFileName(&of)) != 0;
 404
 405     DWORD errCode = CommDlgExtendedError();
 406
 407 #ifdef __WIN32__
 408     if (!success && (errCode == CDERR_STRUCTSIZE))
 409     {
 410         // The struct size has changed so try a smaller or bigger size
 411
 412         int oldStructSize = of.lStructSize;
 413         of.lStructSize       = oldStructSize - (sizeof(void *) + 2*sizeof(DWORD));
 414         success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
 415                                             : (GetOpenFileName(&of) != 0);
 416         errCode = CommDlgExtendedError();
 417
 418         if (!success && (errCode == CDERR_STRUCTSIZE))
 419         {
 420             of.lStructSize       = oldStructSize + (sizeof(void *) + 2*sizeof(DWORD));
 421             success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
 422                                             : (GetOpenFileName(&of) != 0);
 423         }
 424     }
 425 #endif // __WIN32__
 426
 427     if ( success )
 428     {
 429         m_fileNames.Empty();
 430
 431         if ( ( m_dialogStyle & wxMULTIPLE ) &&
 432 #if defined(OFN_EXPLORER)
 433              ( fileNameBuffer[of.nFileOffset-1] == wxT('\0') )
 434 #else
 435              ( fileNameBuffer[of.nFileOffset-1] == wxT(' ') )
 436 #endif // OFN_EXPLORER
 437            )
 438         {
 439 #if defined(OFN_EXPLORER)
 440             m_dir = fileNameBuffer;
 441             i = of.nFileOffset;
 442             m_fileName = &fileNameBuffer[i];
 443             m_fileNames.Add(m_fileName);
 444             i += m_fileName.Len() + 1;
 445
 446             while (fileNameBuffer[i] != wxT('\0'))
 447             {
 448                 m_fileNames.Add(&fileNameBuffer[i]);
 449                 i += wxStrlen(&fileNameBuffer[i]) + 1;
 450             }
 451 #else
 452             wxStringTokenizer toke(fileNameBuffer, _T(" \t\r\n"));
 453             m_dir = toke.GetNextToken();
 454             m_fileName = toke.GetNextToken();
 455             m_fileNames.Add(m_fileName);
 456
 457             while (toke.HasMoreTokens())
 458                 m_fileNames.Add(toke.GetNextToken());
 459 #endif // OFN_EXPLORER
 460
 461             wxString dir(m_dir);
 462             if ( m_dir.Last() != _T('\\') )
 463                 dir += _T('\\');
 464
 465             m_path = dir + m_fileName;
 466             m_filterIndex = (int)of.nFilterIndex - 1;
 467         }
 468         else
 469         {
 470             //=== Adding the correct extension >>=================================
 471
 472             m_filterIndex = (int)of.nFilterIndex - 1;
 473
 474             if ( !of.nFileExtension ||
 475                  (of.nFileExtension && fileNameBuffer[of.nFileExtension] == wxT('\0')) )
 476             {
 477                 // User has typed a filename without an extension:
 478                 const wxChar* extension = filterBuffer;
 479                 int   maxFilter = (int)(of.nFilterIndex*2L) - 1;
 480
 481                 for( int i = 0; i < maxFilter; i++ )           // get extension
 482                     extension = extension + wxStrlen( extension ) + 1;
 483
 484                 m_fileName = AppendExtension(fileNameBuffer, extension);
 485                 wxStrncpy(fileNameBuffer, m_fileName.c_str(), wxMin(m_fileName.Len(), wxMAXPATH-1));
 486                 fileNameBuffer[wxMin(m_fileName.Len(), wxMAXPATH-1)] = wxT('\0');
 487             }
 488
 489             m_path = fileNameBuffer;
 490             m_fileName = wxFileNameFromPath(fileNameBuffer);
 491             m_fileNames.Add(m_fileName);
 492             m_dir = wxPathOnly(fileNameBuffer);
 493         }
 494     }
 495     else
 496     {
 497         // common dialog failed - why?
 498 #ifdef __WXDEBUG__
 499         DWORD dwErr = CommDlgExtendedError();
 500         if ( dwErr != 0 )
 501         {
 502             // this msg is only for developers
 503             wxLogError(wxT("Common dialog failed with error code %0lx."),
 504                        dwErr);
 505         }
 506         //else: it was just cancelled
 507 #endif
 508     }
 509
 510     return success ? wxID_OK : wxID_CANCEL;
 511
 512 }
 513
 514 #endif // wxUSE_FILEDLG
 515