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 && !wxUSE_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 #ifndef OFN_EXPLORER
  57     #define OFN_EXPLORER 0x00080000
  58 #endif
  59
  60 // ----------------------------------------------------------------------------
  61 // constants
  62 // ----------------------------------------------------------------------------
  63
  64 #ifdef __WIN32__
  65 # define wxMAXPATH   65534
  66 #else
  67 # define wxMAXPATH   1024
  68 #endif
  69
  70 # define wxMAXFILE   1024
  71
  72 # define wxMAXEXT    5
  73
  74 // ============================================================================
  75 // implementation
  76 // ============================================================================
  77
  78 IMPLEMENT_CLASS(wxFileDialog, wxFileDialogBase)
  79
  80 // ----------------------------------------------------------------------------
  81 // wxFileDialog
  82 // ----------------------------------------------------------------------------
  83
  84 wxFileDialog::wxFileDialog(wxWindow *parent,
  85                            const wxString& message,
  86                            const wxString& defaultDir,
  87                            const wxString& defaultFileName,
  88                            const wxString& wildCard,
  89                            long style,
  90                            const wxPoint& pos)
  91              :wxFileDialogBase(parent, message, defaultDir, defaultFileName, wildCard, style, pos)
  92
  93 {
  94     if ( ( m_dialogStyle & wxMULTIPLE ) && ( m_dialogStyle & wxSAVE ) )
  95         m_dialogStyle &= ~wxMULTIPLE;
  96 }
  97
  98 void wxFileDialog::GetPaths(wxArrayString& paths) const
  99 {
 100     paths.Empty();
 101
 102     wxString dir(m_dir);
 103     if ( m_dir.Last() != _T('\\') )
 104         dir += _T('\\');
 105
 106     size_t count = m_fileNames.GetCount();
 107     for ( size_t n = 0; n < count; n++ )
 108     {
 109         if (wxFileName(m_fileNames[n]).IsAbsolute())
 110             paths.Add(m_fileNames[n]);
 111         else
 112             paths.Add(dir + m_fileNames[n]);
 113     }
 114 }
 115
 116 void wxFileDialog::SetPath(const wxString& path)
 117 {
 118     wxString ext;
 119     wxSplitPath(path, &m_dir, &m_fileName, &ext);
 120     if ( !ext.empty() )
 121         m_fileName << _T('.') << ext;
 122 }
 123
 124 int wxFileDialog::ShowModal()
 125 {
 126     HWND hWnd = 0;
 127     if (m_parent) hWnd = (HWND) m_parent->GetHWND();
 128     if (!hWnd && wxTheApp->GetTopWindow())
 129         hWnd = (HWND) wxTheApp->GetTopWindow()->GetHWND();
 130
 131     static wxChar fileNameBuffer [ wxMAXPATH ];           // the file-name
 132     wxChar        titleBuffer    [ wxMAXFILE+1+wxMAXEXT ];  // the file-name, without path
 133
 134     *fileNameBuffer = wxT('\0');
 135     *titleBuffer    = wxT('\0');
 136
 137     long msw_flags = 0;
 138     if ( (m_dialogStyle & wxHIDE_READONLY) || (m_dialogStyle & wxSAVE) )
 139         msw_flags |= OFN_HIDEREADONLY;
 140     if ( m_dialogStyle & wxFILE_MUST_EXIST )
 141         msw_flags |= OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
 142
 143     if (m_dialogStyle & wxMULTIPLE )
 144     {
 145         // OFN_EXPLORER must always be specified with OFN_ALLOWMULTISELECT
 146         msw_flags |= OFN_EXPLORER | OFN_ALLOWMULTISELECT;
 147     }
 148
 149     // if wxCHANGE_DIR flag is not given we shouldn't change the CWD which the
 150     // standard dialog does by default
 151     if ( !(m_dialogStyle & wxCHANGE_DIR) )
 152     {
 153         msw_flags |= OFN_NOCHANGEDIR;
 154     }
 155 /* chris elliott for some reason this does not work usefully if no extension
 156    is given, as it test for junk instead of junk.ext
 157     if ( m_dialogStyle & wxOVERWRITE_PROMPT )
 158     {
 159         msw_flags |= OFN_OVERWRITEPROMPT;
 160     }
 161 */
 162     OPENFILENAME of;
 163     wxZeroMemory(of);
 164
 165     // the OPENFILENAME struct has been extended in newer version of
 166     // comcdlg32.dll, but as we don't use the extended fields anyhow, set
 167     // the struct size to the old value - otherwise, the programs compiled
 168     // with new headers will not work with the old libraries
 169 #if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0500)
 170     of.lStructSize       = sizeof(OPENFILENAME) -
 171                            (sizeof(void *) + 2*sizeof(DWORD));
 172 #else // old headers
 173     of.lStructSize       = sizeof(OPENFILENAME);
 174 #endif
 175
 176     of.hwndOwner         = hWnd;
 177     of.lpstrTitle        = WXSTRINGCAST m_message;
 178     of.lpstrFileTitle    = titleBuffer;
 179     of.nMaxFileTitle     = wxMAXFILE + 1 + wxMAXEXT;    // Windows 3.0 and 3.1
 180
 181     // Convert forward slashes to backslashes (file selector doesn't like
 182     // forward slashes) and also squeeze multiple consecutive slashes into one
 183     // as it doesn't like two backslashes in a row neither
 184
 185     wxString    dir;
 186     size_t      i, len = m_dir.length();
 187     dir.reserve(len);
 188     for ( i = 0; i < len; i++ )
 189     {
 190         wxChar ch = m_dir[i];
 191         switch ( ch )
 192         {
 193             case _T('/'):
 194                 // convert to backslash
 195                 ch = _T('\\');
 196
 197                 // fall through
 198
 199             case _T('\\'):
 200                 while ( i < len - 1 )
 201                 {
 202                     wxChar chNext = m_dir[i + 1];
 203                     if ( chNext != _T('\\') && chNext != _T('/') )
 204                         break;
 205
 206                     // ignore the next one, unless it is at the start of a UNC path
 207                     if (i > 0)
 208                         i++;
 209                     else
 210                         break;
 211                 }
 212                 // fall through
 213
 214             default:
 215                 // normal char
 216                 dir += ch;
 217         }
 218     }
 219
 220     of.lpstrInitialDir   = dir.c_str();
 221
 222     of.Flags             = msw_flags;
 223
 224
 225     //=== Like Alejandro Sierra's wildcard modification >>===================
 226     /*
 227        In wxFileSelector you can put, instead of a single wild_card,
 228        pairs of strings separated by '|'.
 229        The first string is a description, and the
 230        second is the wild card. You can put any number of pairs.
 231
 232        eg.  "description1 (*.ex1)|*.ex1|description2 (*.ex2)|*.ex2"
 233
 234        If you put a single wild card, it works as before the modification.
 235      */
 236     //=======================================================================
 237
 238     wxString theFilter;
 239     if ( wxStrlen(m_wildCard) == 0 )
 240         theFilter = wxString(wxT("*.*"));
 241     else
 242         theFilter = m_wildCard ;
 243     wxString filterBuffer;
 244
 245     if ( !wxStrchr( theFilter, wxT('|') ) ) {    // only one filter ==> default text
 246         filterBuffer.Printf(_("Files (%s)|%s"),
 247                             theFilter.c_str(), theFilter.c_str());
 248     }
 249     else {                                // more then one filter
 250         filterBuffer = theFilter;
 251
 252     }
 253
 254     filterBuffer += wxT("|");
 255     // Replace | with \0
 256     for (i = 0; i < filterBuffer.Len(); i++ ) {
 257         if ( filterBuffer.GetChar(i) == wxT('|') ) {
 258             filterBuffer[i] = wxT('\0');
 259         }
 260     }
 261
 262     of.lpstrFilter  = (LPTSTR)(const wxChar *)filterBuffer;
 263     of.nFilterIndex = m_filterIndex + 1;
 264
 265     //=== Setting defaultFileName >>=========================================
 266
 267     wxStrncpy( fileNameBuffer, (const wxChar *)m_fileName, wxMAXPATH-1 );
 268     fileNameBuffer[ wxMAXPATH-1 ] = wxT('\0');
 269
 270     of.lpstrFile = fileNameBuffer;  // holds returned filename
 271     of.nMaxFile  = wxMAXPATH;
 272
 273     //== Execute FileDialog >>=================================================
 274
 275     bool success = (m_dialogStyle & wxSAVE ? GetSaveFileName(&of)
 276                                            : GetOpenFileName(&of)) != 0;
 277
 278     DWORD errCode = CommDlgExtendedError();
 279
 280 #ifdef __WIN32__
 281     if (!success && (errCode == CDERR_STRUCTSIZE))
 282     {
 283         // The struct size has changed so try a smaller or bigger size
 284
 285         int oldStructSize = of.lStructSize;
 286         of.lStructSize       = oldStructSize - (sizeof(void *) + 2*sizeof(DWORD));
 287         success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
 288                                             : (GetOpenFileName(&of) != 0);
 289         errCode = CommDlgExtendedError();
 290
 291         if (!success && (errCode == CDERR_STRUCTSIZE))
 292         {
 293             of.lStructSize       = oldStructSize + (sizeof(void *) + 2*sizeof(DWORD));
 294             success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
 295                                             : (GetOpenFileName(&of) != 0);
 296         }
 297     }
 298 #endif // __WIN32__
 299
 300     if ( success )
 301     {
 302         m_fileNames.Empty();
 303
 304         if ( ( m_dialogStyle & wxMULTIPLE ) &&
 305 #if defined(OFN_EXPLORER)
 306              ( fileNameBuffer[of.nFileOffset-1] == wxT('\0') )
 307 #else
 308              ( fileNameBuffer[of.nFileOffset-1] == wxT(' ') )
 309 #endif // OFN_EXPLORER
 310            )
 311         {
 312 #if defined(OFN_EXPLORER)
 313             m_dir = fileNameBuffer;
 314             i = of.nFileOffset;
 315             m_fileName = &fileNameBuffer[i];
 316             m_fileNames.Add(m_fileName);
 317             i += m_fileName.Len() + 1;
 318
 319             while (fileNameBuffer[i] != wxT('\0'))
 320             {
 321                 m_fileNames.Add(&fileNameBuffer[i]);
 322                 i += wxStrlen(&fileNameBuffer[i]) + 1;
 323             }
 324 #else
 325             wxStringTokenizer toke(fileNameBuffer, _T(" \t\r\n"));
 326             m_dir = toke.GetNextToken();
 327             m_fileName = toke.GetNextToken();
 328             m_fileNames.Add(m_fileName);
 329
 330             while (toke.HasMoreTokens())
 331                 m_fileNames.Add(toke.GetNextToken());
 332 #endif // OFN_EXPLORER
 333
 334             wxString dir(m_dir);
 335             if ( m_dir.Last() != _T('\\') )
 336                 dir += _T('\\');
 337
 338             m_path = dir + m_fileName;
 339         }
 340         else
 341         {
 342             //=== Adding the correct extension >>=================================
 343
 344             m_filterIndex = (int)of.nFilterIndex - 1;
 345
 346             if ( !of.nFileExtension ||
 347                  (of.nFileExtension && fileNameBuffer[of.nFileExtension] == wxT('\0')) )
 348             {
 349                 // User has typed a filename without an extension:
 350                 const wxChar* extension = filterBuffer;
 351                 int   maxFilter = (int)(of.nFilterIndex*2L) - 1;
 352
 353                 for( int i = 0; i < maxFilter; i++ )           // get extension
 354                     extension = extension + wxStrlen( extension ) + 1;
 355
 356                 m_fileName = AppendExtension(fileNameBuffer, extension);
 357                 wxStrncpy(fileNameBuffer, m_fileName.c_str(), wxMin(m_fileName.Len(), wxMAXPATH-1));
 358                 fileNameBuffer[wxMin(m_fileName.Len(), wxMAXPATH-1)] = wxT('\0');
 359             }
 360
 361             m_path = fileNameBuffer;
 362             m_fileName = wxFileNameFromPath(fileNameBuffer);
 363             m_fileNames.Add(m_fileName);
 364             m_dir = wxPathOnly(fileNameBuffer);
 365         }
 366         //=== Simulating the wxOVERWRITE_PROMPT >>============================
 367         //should we also test for file save style ??
 368         if ( (m_dialogStyle & wxOVERWRITE_PROMPT) &&
 369              ::wxFileExists( fileNameBuffer ) )
 370              {
 371              wxString messageText;
 372              messageText.Printf(_("File '%s' already exists.\nDo you want to replace it?"), fileNameBuffer);
 373              if ( wxMessageBox(messageText, _("Save File As"), wxYES_NO | wxICON_EXCLAMATION     ) != wxYES )
 374              {
 375                  success = FALSE;
 376              }
 377         }
 378     }
 379     else
 380     {
 381         // common dialog failed - why?
 382 #ifdef __WXDEBUG__
 383         DWORD dwErr = CommDlgExtendedError();
 384         if ( dwErr != 0 )
 385         {
 386             // this msg is only for developers
 387             wxLogError(wxT("Common dialog failed with error code %0lx."),
 388                        dwErr);
 389         }
 390         //else: it was just cancelled
 391 #endif
 392     }
 393
 394     return success ? wxID_OK : wxID_CANCEL;
 395
 396 }
 397
 398 #endif // wxUSE_FILEDLG
 399