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/dialog.h"
  28 #include "wx/filedlg.h"
  29 #endif
  30
  31 #include <windows.h>
  32
  33 #ifndef __WIN32__
  34 #include <commdlg.h>
  35 #endif
  36
  37 #include "wx/msw/private.h"
  38
  39 #include <math.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42
  43 #define wxDIALOG_DEFAULT_X 300
  44 #define wxDIALOG_DEFAULT_Y 300
  45
  46 #if !USE_SHARED_LIBRARY
  47 IMPLEMENT_CLASS(wxFileDialog, wxDialog)
  48 #endif
  49
  50 char *wxFileSelector(const char *title,
  51                      const char *defaultDir, const char *defaultFileName,
  52                      const char *defaultExtension, const char *filter, int flags,
  53                      wxWindow *parent, int x, int y)
  54 {
  55         // In the original implementation, defaultExtension is passed to the lpstrDefExt member
  56         // of OPENFILENAME. This extension, if non-NULL, is appended to the filename if the user
  57         // fails to type an extension.
  58         // The new implementation (taken from wxFileSelectorEx) appends the extension automatically,
  59         // by looking at the filter specification. In fact this should be better than the
  60         // native Microsoft implementation because Windows only allows *one* default extension,
  61         // whereas here we do the right thing depending on the filter the user has chosen.
  62
  63         // If there's a default extension specified but no filter, we create a suitable
  64         // filter.
  65
  66         wxString filter2("");
  67         if ( defaultExtension && !filter )
  68                 filter2 = wxString("*.") + wxString(defaultExtension) ;
  69         else if ( filter )
  70                 filter2 = filter;
  71
  72         wxString defaultDirString;
  73         if (defaultDir)
  74                 defaultDirString = defaultDir;
  75         else
  76                 defaultDirString = "";
  77
  78         wxString defaultFilenameString;
  79         if (defaultFileName)
  80                 defaultFilenameString = defaultFileName;
  81         else
  82                 defaultFilenameString = "";
  83
  84         wxFileDialog fileDialog(parent, title, defaultDirString, defaultFilenameString, filter2, flags, wxPoint(x, y));
  85
  86         if ( fileDialog.ShowModal() == wxID_OK )
  87         {
  88                 strcpy(wxBuffer, (const char *)fileDialog.GetPath());
  89                 return wxBuffer;
  90         }
  91         else
  92                 return NULL;
  93 }
  94
  95 # if __BORLANDC__
  96 #   include <dir.h>  // for MAXPATH etc. ( Borland 3.1 )
  97 # endif
  98
  99 # ifndef MAXPATH
 100 # define MAXPATH   400
 101 # endif
 102
 103 # ifndef MAXDRIVE
 104 # define MAXDRIVE  3
 105 # endif
 106
 107 # ifndef MAXFILE
 108 # define MAXFILE   9
 109 # endif
 110
 111 # ifndef MAXEXT
 112 # define MAXEXT    5
 113 # endif
 114
 115
 116 char *wxFileSelectorEx( const char *title,
 117                         const char *defaultDir,
 118                         const char *defaultFileName,
 119                         int* defaultFilterIndex,
 120                         const char *filter,
 121             const int       flags,
 122             wxWindow* parent,
 123             const int       x,
 124             const int       y)
 125
 126 {
 127         wxFileDialog fileDialog(parent, title ? title : "", defaultDir ? defaultDir : "",
 128         defaultFileName ? defaultFileName : "", filter ? filter : "", flags, wxPoint(x, y));
 129
 130         if ( fileDialog.ShowModal() == wxID_OK )
 131         {
 132                 *defaultFilterIndex = fileDialog.GetFilterIndex();
 133                 strcpy(wxBuffer, (const char *)fileDialog.GetPath());
 134                 return wxBuffer;
 135         }
 136         else
 137                 return NULL;
 138 }
 139
 140 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 141         const wxString& defaultDir, const wxString& defaultFileName, const wxString& wildCard,
 142         long style, const wxPoint& pos)
 143 {
 144     m_message = message;
 145     m_dialogStyle = style;
 146     m_parent = parent;
 147         m_path = "";
 148         m_fileName = defaultFileName;
 149         m_dir = defaultDir;
 150         m_wildCard = wildCard;
 151         m_filterIndex = 1;
 152 }
 153
 154 int wxFileDialog::ShowModal(void)
 155 {
 156   HWND hWnd = 0;
 157   if (m_parent) hWnd = (HWND) m_parent->GetHWND();
 158
 159         static char  fileNameBuffer [ MAXPATH ];                   // the file-name
 160         char         titleBuffer    [ MAXFILE+1+MAXEXT ];  // the file-name, without path
 161
 162         *fileNameBuffer = '\0';
 163     *titleBuffer    = '\0';
 164
 165         char* filterBuffer = NULL;
 166         char* extension    = NULL;
 167         char* theFilter    = (char *)(const char *)m_wildCard;
 168
 169     long msw_flags = 0;
 170     if ( (m_dialogStyle & wxHIDE_READONLY) || (m_dialogStyle & wxSAVE) ) { msw_flags |= OFN_HIDEREADONLY; }
 171
 172
 173         OPENFILENAME of;
 174         memset(&of, 0, sizeof(OPENFILENAME));
 175
 176     of.lpstrCustomFilter = NULL;   // system should not save custom filter
 177         of.nMaxCustFilter    = 0L;
 178
 179         of.nFileOffset       = 0;      // 0-based pointer to filname in lpstFile
 180         of.nFileExtension    = 0;      // 0-based pointer to extension in lpstrFile
 181         of.lpstrDefExt       = NULL;   // no default extension
 182
 183         of.lStructSize           = sizeof(OPENFILENAME);
 184         of.hwndOwner             = hWnd;
 185         of.lpstrTitle        = (char *)(const char *)m_message;
 186
 187
 188         of.lpstrFileTitle    = titleBuffer;
 189         of.nMaxFileTitle     = MAXFILE + 1 + MAXEXT;    // Windows 3.0 and 3.1
 190
 191         of.lpstrInitialDir   = (const char *) m_dir;
 192
 193         of.Flags                         = msw_flags;
 194
 195
 196
 197     //=== Like Alejandro Sierra's wildcard modification >>===================
 198     /*
 199         In wxFileSelector you can put, instead of a single wild_card,
 200         pairs of strings separated by '|'.
 201         The first string is a description, and the
 202         second is the wild card. You can put any number of pairs.
 203
 204         eg.  "description1 (*.ex1)|*.ex1|description2 (*.ex2)|*.ex2"
 205
 206         If you put a single wild card, it works as before the modification.
 207     */
 208     //=======================================================================
 209
 210         if ( !theFilter || (strcmp(theFilter, "") == 0)) theFilter = "*.*";
 211
 212         int filterBufferLen = 0;
 213
 214         if ( !strchr( theFilter, '|' ) ) {                      // only one filter ==> default text:
 215                 char buffText[] = "Files (%s)|%s";
 216                 filterBufferLen = strlen( theFilter )*2 + strlen( buffText ) -4;
 217                 filterBuffer    = new char[ filterBufferLen +2 ];
 218
 219                 if ( filterBuffer ) {
 220                         sprintf( filterBuffer, buffText, theFilter, theFilter );
 221                 }
 222         }
 223         else {                                                          // more then one filter
 224                 filterBufferLen = strlen( theFilter );
 225                 filterBuffer    = new char[ filterBufferLen +2 ];
 226
 227                 if ( filterBuffer ) {
 228                         strcpy( filterBuffer, theFilter );
 229             }
 230         }
 231
 232     if ( filterBuffer ) {                                           // Substituting '|' with '\0'
 233                 for ( int i = 0; i < filterBufferLen; i++ ) {
 234                         if ( filterBuffer[i] == '|' ) { filterBuffer[i] = '\0'; }
 235                 }
 236         }
 237
 238         filterBuffer[filterBufferLen+1] = '\0';
 239
 240         of.lpstrFilter  = (LPSTR)filterBuffer;
 241         of.nFilterIndex = m_filterIndex;
 242
 243     //=== Setting defaultFileName >>=========================================
 244
 245     strncpy( fileNameBuffer, (const char *)m_fileName, MAXPATH-1 );
 246     fileNameBuffer[ MAXPATH-1 ] = '\0';
 247
 248         of.lpstrFile = fileNameBuffer;  // holds returned filename
 249         of.nMaxFile  = MAXPATH;
 250
 251     //== Execute FileDialog >>=================================================
 252
 253     bool success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0) : (GetOpenFileName(&of) != 0);
 254
 255     if ( success )
 256     {
 257         //=== Adding the correct extension >>=================================
 258
 259         m_filterIndex = (int)of.nFilterIndex;
 260
 261             if ( of.nFileExtension && fileNameBuffer[ of.nFileExtension-1] != '.' )
 262         {                                    // user has typed an filename
 263                                              // without an extension:
 264
 265                 int   maxFilter = (int)(of.nFilterIndex*2L-1L);
 266                 extension       = filterBuffer;
 267
 268                 for( int i = 0; i < maxFilter; i++ ) {              // get extension
 269                         extension = extension + strlen( extension ) +1;
 270                 }
 271
 272                 if (  (extension = strrchr( extension, '.' ))   // != "blabla"
 273                               && !strrchr( extension, '*' )             // != "blabla.*"
 274                               && !strrchr( extension, '?' )             // != "blabla.?"
 275                               && extension[1]                           // != "blabla."
 276                               && extension[1] != ' ' )                  // != "blabla. "
 277                 {
 278                               // now concat extension to the fileName:
 279                                 m_fileName = wxString(fileNameBuffer) + wxString(extension);
 280
 281                 int len = strlen( fileNameBuffer );
 282                     strncpy( fileNameBuffer + len, extension, MAXPATH - len );
 283                 fileNameBuffer[ MAXPATH -1 ] = '\0';
 284             }
 285             }
 286
 287         m_path = fileNameBuffer;
 288                 m_fileName = wxFileNameFromPath(fileNameBuffer);
 289
 290
 291             //=== Simulating the wxOVERWRITE_PROMPT >>============================
 292
 293             if ( (m_dialogStyle & wxOVERWRITE_PROMPT) && ::wxFileExists( fileNameBuffer ) )
 294         {
 295                     char  questionText[] = "Replace file\n%s?";
 296                     char* messageText    = new char[strlen(questionText)+strlen(fileNameBuffer)-1];
 297                     sprintf( messageText, questionText, fileNameBuffer );
 298
 299                     if ( messageText && ( wxMessageBox( (const char *)messageText, m_message, wxYES_NO ) != wxYES ) )
 300             {
 301                 success = FALSE;
 302                     }
 303
 304                     delete[] messageText;
 305             }
 306
 307     } // END: if ( success )
 308
 309
 310     delete[] filterBuffer;
 311
 312         return (success ? wxID_OK : wxID_CANCEL) ;
 313
 314 }
 315
 316 #define wxDIALOG_DEFAULT_X 300
 317 #define wxDIALOG_DEFAULT_Y 300
 318
 319 // Generic file load/save dialog
 320 // static inline char * // HP compiler complains
 321 static char *
 322 wxDefaultFileSelector(bool load, const char *what, const char *extension, const char *default_name, wxWindow *parent)
 323 {
 324   char *ext = (char *)extension;
 325
 326   char prompt[50];
 327   wxString str;
 328   if (load)
 329         str = (const char*) wxTString("Load %s file");
 330   else
 331         str = (const char*) wxTString("Save %s file");
 332   sprintf(prompt, str, what);
 333
 334   if (*ext == '.') ext++;
 335   char wild[60];
 336   sprintf(wild, "*.%s", ext);
 337
 338   return wxFileSelector (prompt, NULL, default_name, ext, wild, 0, parent);
 339 }
 340
 341 // Generic file load dialog
 342 char *
 343 wxLoadFileSelector(const char *what, const char *extension, const char *default_name, wxWindow *parent)
 344 {
 345   return wxDefaultFileSelector(TRUE, what, extension, default_name, parent);
 346 }
 347
 348
 349 // Generic file save dialog
 350 char *
 351 wxSaveFileSelector(const char *what, const char *extension, const char *default_name, wxWindow *parent)
 352 {
 353   return wxDefaultFileSelector(FALSE, what, extension, default_name, parent);
 354 }
 355
 356