src/msw/filedlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     #pragma implementation "filedlg.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24     #include <stdio.h>
  25     #include "wx/defs.h"
  26     #include "wx/utils.h"
  27     #include "wx/msgdlg.h"
  28     #include "wx/dialog.h"
  29     #include "wx/filedlg.h"
  30     #include "wx/intl.h"
  31 #endif
  32
  33 #include <windows.h>
  34
  35 #if !defined(__WIN32__) || defined(__SALFORDC__)
  36     #include <commdlg.h>
  37 #endif
  38
  39 #include "wx/msw/private.h"
  40
  41 #include <math.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44
  45 #if !USE_SHARED_LIBRARY
  46     IMPLEMENT_CLASS(wxFileDialog, wxDialog)
  47 #endif
  48
  49 wxString wxFileSelector(const char *title,
  50                         const char *defaultDir,
  51                         const char *defaultFileName,
  52                         const char *defaultExtension,
  53                         const char *filter,
  54                         int flags,
  55                         wxWindow *parent,
  56                         int x, int y)
  57 {
  58     // In the original implementation, defaultExtension is passed to the
  59     // lpstrDefExt member of OPENFILENAME. This extension, if non-NULL, is
  60     // appended to the filename if the user fails to type an extension. The new
  61     // implementation (taken from wxFileSelectorEx) appends the extension
  62     // automatically, by looking at the filter specification. In fact this
  63     // should be better than the native Microsoft implementation because
  64     // Windows only allows *one* default extension, whereas here we do the
  65     // right thing depending on the filter the user has chosen.
  66
  67     // If there's a default extension specified but no filter, we create a
  68     // suitable filter.
  69
  70     wxString filter2;
  71     if ( defaultExtension && !filter )
  72         filter2 = wxString("*.") + defaultExtension;
  73     else if ( filter )
  74         filter2 = filter;
  75
  76     wxString defaultDirString;
  77     if (defaultDir)
  78         defaultDirString = defaultDir;
  79
  80     wxString defaultFilenameString;
  81     if (defaultFileName)
  82         defaultFilenameString = defaultFileName;
  83
  84     wxFileDialog fileDialog(parent, title, defaultDirString,
  85                             defaultFilenameString, filter2,
  86                             flags, wxPoint(x, y));
  87     if( Strlen(defaultExtension) != 0 )
  88     {
  89         int filterFind = 1,
  90             filterIndex = 0;
  91
  92         for( unsigned int i = 0; i < filter2.Len(); i++ )
  93         {
  94             if( filter2.GetChar(i) == '|' )
  95             {
  96                 // save the start index of the new filter
  97                 unsigned int is = i++;
  98                 filterIndex++;
  99
 100                 // find the end of the filter
 101                 for( ; i < filter2.Len(); i++ )
 102                 {
 103                     if(filter2[i] == '|')
 104                         break;
 105                 }
 106
 107                 if( i-is-1 > 0 && is+1 < filter2.Len() )
 108                 {
 109                     if( filter2.Mid(is+1,i-is-1).Contains(defaultExtension) )
 110                     {
 111                         filterFind = filterIndex;
 112                         break;
 113                     }
 114                 }
 115             }
 116         }
 117
 118         fileDialog.SetFilterIndex(filterFind);
 119     }
 120
 121     if ( fileDialog.ShowModal() == wxID_OK )
 122     {
 123         strcpy(wxBuffer, (const char *)fileDialog.GetPath());
 124         return wxBuffer;
 125     }
 126     else
 127         return wxGetEmptyString();
 128 }
 129
 130 # if __BORLANDC__
 131 #   include <dir.h>  // for MAXPATH etc. ( Borland 3.1 )
 132 # endif
 133
 134 # ifndef MAXPATH
 135 # define MAXPATH   400
 136 # endif
 137
 138 # ifndef MAXDRIVE
 139 # define MAXDRIVE  3
 140 # endif
 141
 142 # ifndef MAXFILE
 143 # define MAXFILE   9
 144 # endif
 145
 146 # ifndef MAXEXT
 147 # define MAXEXT    5
 148 # endif
 149
 150
 151 wxString wxFileSelectorEx(const char *title,
 152                        const char *defaultDir,
 153                        const char *defaultFileName,
 154                        int* defaultFilterIndex,
 155                        const char *filter,
 156                        int       flags,
 157                        wxWindow* parent,
 158                        int       x,
 159                        int       y)
 160
 161 {
 162     wxFileDialog fileDialog(parent, title ? title : "", defaultDir ? defaultDir : "",
 163         defaultFileName ? defaultFileName : "", filter ? filter : "", flags, wxPoint(x, y));
 164
 165     if ( fileDialog.ShowModal() == wxID_OK )
 166     {
 167         *defaultFilterIndex = fileDialog.GetFilterIndex();
 168         strcpy(wxBuffer, (const char *)fileDialog.GetPath());
 169         return wxBuffer;
 170     }
 171     else
 172         return wxGetEmptyString();
 173 }
 174
 175 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 176         const wxString& defaultDir, const wxString& defaultFileName, const wxString& wildCard,
 177         long style, const wxPoint& pos)
 178 {
 179     m_message = message;
 180     m_dialogStyle = style;
 181     m_parent = parent;
 182     m_path = "";
 183     m_fileName = defaultFileName;
 184     m_dir = defaultDir;
 185     m_wildCard = wildCard;
 186     m_filterIndex = 1;
 187 }
 188
 189 int wxFileDialog::ShowModal(void)
 190 {
 191     HWND hWnd = 0;
 192     if (m_parent) hWnd = (HWND) m_parent->GetHWND();
 193
 194     static char  fileNameBuffer [ MAXPATH ];           // the file-name
 195     char         titleBuffer    [ MAXFILE+1+MAXEXT ];  // the file-name, without path
 196
 197     *fileNameBuffer = '\0';
 198     *titleBuffer    = '\0';
 199
 200     long msw_flags = 0;
 201     if ( (m_dialogStyle & wxHIDE_READONLY) || (m_dialogStyle & wxSAVE) )
 202         msw_flags |= OFN_HIDEREADONLY;
 203     if ( m_dialogStyle & wxFILE_MUST_EXIST )
 204         msw_flags |= OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
 205
 206     OPENFILENAME of;
 207     memset(&of, 0, sizeof(OPENFILENAME));
 208
 209     of.lpstrCustomFilter = NULL;   // system should not save custom filter
 210     of.nMaxCustFilter    = 0L;
 211
 212     of.nFileOffset       = 0;      // 0-based pointer to filname in lpstFile
 213     of.nFileExtension    = 0;      // 0-based pointer to extension in lpstrFile
 214     of.lpstrDefExt       = NULL;   // no default extension
 215
 216     of.lStructSize       = sizeof(OPENFILENAME);
 217     of.hwndOwner         = hWnd;
 218     of.lpstrTitle        = (char *)(const char *)m_message;
 219
 220
 221     of.lpstrFileTitle    = titleBuffer;
 222     of.nMaxFileTitle     = MAXFILE + 1 + MAXEXT;    // Windows 3.0 and 3.1
 223
 224     of.lpstrInitialDir   = (const char *) m_dir;
 225
 226     of.Flags             = msw_flags;
 227
 228
 229
 230     //=== Like Alejandro Sierra's wildcard modification >>===================
 231     /*
 232        In wxFileSelector you can put, instead of a single wild_card,
 233        pairs of strings separated by '|'.
 234        The first string is a description, and the
 235        second is the wild card. You can put any number of pairs.
 236
 237        eg.  "description1 (*.ex1)|*.ex1|description2 (*.ex2)|*.ex2"
 238
 239        If you put a single wild card, it works as before the modification.
 240      */
 241     //=======================================================================
 242
 243     wxString theFilter = ( Strlen(m_wildCard) == 0 ) ? wxString("*.*") : m_wildCard;
 244     wxString filterBuffer;
 245
 246     if ( !strchr( theFilter, '|' ) ) {    // only one filter ==> default text
 247         filterBuffer.Printf(_("Files (%s)|%s"),
 248                             theFilter.c_str(), theFilter.c_str());
 249     }
 250     else {                                // more then one filter
 251         filterBuffer = theFilter;
 252
 253         for ( unsigned int i = 0; i < filterBuffer.Len(); i++ ) {
 254             if ( filterBuffer.GetChar(i) == '|' ) {
 255                 filterBuffer[i] = '\0';
 256             }
 257         }
 258     }
 259
 260     of.lpstrFilter  = (LPSTR)(const char *)filterBuffer;
 261     of.nFilterIndex = m_filterIndex;
 262
 263     //=== Setting defaultFileName >>=========================================
 264
 265     strncpy( fileNameBuffer, (const char *)m_fileName, MAXPATH-1 );
 266     fileNameBuffer[ MAXPATH-1 ] = '\0';
 267
 268     of.lpstrFile = fileNameBuffer;  // holds returned filename
 269     of.nMaxFile  = MAXPATH;
 270
 271     //== Execute FileDialog >>=================================================
 272
 273     bool success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
 274                                             : (GetOpenFileName(&of) != 0);
 275
 276     if ( success )
 277     {
 278         const char* extension = NULL;
 279
 280         //=== Adding the correct extension >>=================================
 281
 282         m_filterIndex = (int)of.nFilterIndex;
 283
 284         if ( of.nFileExtension && fileNameBuffer[ of.nFileExtension-1] != '.' )
 285         {                                    // user has typed an filename
 286             // without an extension:
 287
 288             int   maxFilter = (int)(of.nFilterIndex*2L-1L);
 289             extension = filterBuffer;
 290
 291             for( int i = 0; i < maxFilter; i++ ) {          // get extension
 292                 extension = extension + strlen( extension ) +1;
 293             }
 294
 295             extension = strrchr( extension, '.' );
 296             if (  extension                                 // != "blabla"
 297                     && !strrchr( extension, '*' )             // != "blabla.*"
 298                     && !strrchr( extension, '?' )             // != "blabla.?"
 299                     && extension[1]                           // != "blabla."
 300                     && extension[1] != ' ' )                  // != "blabla. "
 301             {
 302                 // now concat extension to the fileName:
 303                 m_fileName = wxString(fileNameBuffer) + extension;
 304
 305                 int len = strlen( fileNameBuffer );
 306                 strncpy( fileNameBuffer + len, extension, MAXPATH - len );
 307                 fileNameBuffer[ MAXPATH -1 ] = '\0';
 308             }
 309         }
 310
 311         m_path = fileNameBuffer;
 312         m_fileName = wxFileNameFromPath(fileNameBuffer);
 313
 314
 315         //=== Simulating the wxOVERWRITE_PROMPT >>============================
 316
 317         if ( (m_dialogStyle & wxOVERWRITE_PROMPT) &&
 318              ::wxFileExists( fileNameBuffer ) )
 319         {
 320             wxString messageText;
 321             messageText.Printf(_("Replace file '%s'?"), fileNameBuffer);
 322
 323             if ( wxMessageBox(messageText, m_message, wxYES_NO ) != wxYES )
 324             {
 325                 success = FALSE;
 326             }
 327         }
 328
 329     } // END: if ( success )
 330
 331     return (success ? wxID_OK : wxID_CANCEL) ;
 332
 333 }
 334
 335 // Generic file load/save dialog (for internal use only)
 336 static
 337 wxString wxDefaultFileSelector(bool load,
 338                                const char *what,
 339                                const char *extension,
 340                                const char *default_name,
 341                                wxWindow *parent)
 342 {
 343   wxString prompt;
 344   wxString str = load ? _("Load %s file") : _("Save %s file");
 345   prompt.Printf(str, what);
 346
 347   const char *ext = extension;
 348   if (*ext == '.')
 349       ext++;
 350
 351   wxString wild;
 352   wild.Printf("*.%s", ext);
 353
 354   return wxFileSelector (prompt, NULL, default_name, ext, wild, 0, parent);
 355 }
 356
 357 // Generic file load dialog
 358 WXDLLEXPORT wxString wxLoadFileSelector(const char *what,
 359                                         const char *extension,
 360                                         const char *default_name,
 361                                         wxWindow *parent)
 362 {
 363     return wxDefaultFileSelector(TRUE, what, extension, default_name, parent);
 364 }
 365
 366 // Generic file save dialog
 367 WXDLLEXPORT wxString wxSaveFileSelector(const char *what,
 368                                         const char *extension,
 369                                         const char *default_name,
 370                                         wxWindow *parent)
 371 {
 372     return wxDefaultFileSelector(FALSE, what, extension, default_name, parent);
 373 }
 374