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 #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::GetFilenames(wxArrayString& files) const
 117 {
 118     files = m_fileNames;
 119 }
 120
 121 void wxFileDialog::SetPath(const wxString& path)
 122 {
 123     wxString ext;
 124     wxSplitPath(path, &m_dir, &m_fileName, &ext);
 125     if ( !ext.empty() )
 126         m_fileName << _T('.') << ext;
 127 }
 128
 129 int wxFileDialog::ShowModal()
 130 {
 131     HWND hWnd = 0;
 132     if (m_parent) hWnd = (HWND) m_parent->GetHWND();
 133     if (!hWnd && wxTheApp->GetTopWindow())
 134         hWnd = (HWND) wxTheApp->GetTopWindow()->GetHWND();
 135
 136     static wxChar fileNameBuffer [ wxMAXPATH ];           // the file-name
 137     wxChar        titleBuffer    [ wxMAXFILE+1+wxMAXEXT ];  // the file-name, without path
 138
 139     *fileNameBuffer = wxT('\0');
 140     *titleBuffer    = wxT('\0');
 141
 142 #if WXWIN_COMPATIBILITY_2_4
 143     long msw_flags = 0;
 144     if ( (m_dialogStyle & wxHIDE_READONLY) || (m_dialogStyle & wxSAVE) )
 145         msw_flags |= OFN_HIDEREADONLY;
 146 #else
 147     long msw_flags = OFN_HIDEREADONLY;
 148 #endif
 149
 150     if ( m_dialogStyle & wxFILE_MUST_EXIST )
 151         msw_flags |= OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
 152
 153     if (m_dialogStyle & wxMULTIPLE )
 154     {
 155         // OFN_EXPLORER must always be specified with OFN_ALLOWMULTISELECT
 156         msw_flags |= OFN_EXPLORER | OFN_ALLOWMULTISELECT;
 157     }
 158
 159     // if wxCHANGE_DIR flag is not given we shouldn't change the CWD which the
 160     // standard dialog does by default
 161     if ( !(m_dialogStyle & wxCHANGE_DIR) )
 162     {
 163         msw_flags |= OFN_NOCHANGEDIR;
 164     }
 165
 166     if ( m_dialogStyle & wxOVERWRITE_PROMPT )
 167     {
 168         msw_flags |= OFN_OVERWRITEPROMPT;
 169     }
 170
 171     OPENFILENAME of;
 172     wxZeroMemory(of);
 173
 174     // the OPENFILENAME struct has been extended in newer version of
 175     // comcdlg32.dll, but as we don't use the extended fields anyhow, set
 176     // the struct size to the old value - otherwise, the programs compiled
 177     // with new headers will not work with the old libraries
 178 #if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0500)
 179     of.lStructSize       = sizeof(OPENFILENAME) -
 180                            (sizeof(void *) + 2*sizeof(DWORD));
 181 #else // old headers
 182     of.lStructSize       = sizeof(OPENFILENAME);
 183 #endif
 184
 185     of.hwndOwner         = hWnd;
 186     of.lpstrTitle        = WXSTRINGCAST m_message;
 187     of.lpstrFileTitle    = titleBuffer;
 188     of.nMaxFileTitle     = wxMAXFILE + 1 + wxMAXEXT;    // Windows 3.0 and 3.1
 189
 190     // Convert forward slashes to backslashes (file selector doesn't like
 191     // forward slashes) and also squeeze multiple consecutive slashes into one
 192     // as it doesn't like two backslashes in a row neither
 193
 194     wxString    dir;
 195     size_t      i, len = m_dir.length();
 196     dir.reserve(len);
 197     for ( i = 0; i < len; i++ )
 198     {
 199         wxChar ch = m_dir[i];
 200         switch ( ch )
 201         {
 202             case _T('/'):
 203                 // convert to backslash
 204                 ch = _T('\\');
 205
 206                 // fall through
 207
 208             case _T('\\'):
 209                 while ( i < len - 1 )
 210                 {
 211                     wxChar chNext = m_dir[i + 1];
 212                     if ( chNext != _T('\\') && chNext != _T('/') )
 213                         break;
 214
 215                     // ignore the next one, unless it is at the start of a UNC path
 216                     if (i > 0)
 217                         i++;
 218                     else
 219                         break;
 220                 }
 221                 // fall through
 222
 223             default:
 224                 // normal char
 225                 dir += ch;
 226         }
 227     }
 228
 229     of.lpstrInitialDir   = dir.c_str();
 230
 231     of.Flags             = msw_flags;
 232
 233
 234     //=== Like Alejandro Sierra's wildcard modification >>===================
 235     /*
 236        In wxFileSelector you can put, instead of a single wild_card,
 237        pairs of strings separated by '|'.
 238        The first string is a description, and the
 239        second is the wild card. You can put any number of pairs.
 240
 241        eg.  "description1 (*.ex1)|*.ex1|description2 (*.ex2)|*.ex2"
 242
 243        If you put a single wild card, it works as before the modification.
 244      */
 245     //=======================================================================
 246
 247     wxString theFilter;
 248     if ( wxStrlen(m_wildCard) == 0 )
 249         theFilter = wxString(wxT("*.*"));
 250     else
 251         theFilter = m_wildCard ;
 252     wxString filterBuffer;
 253
 254     if ( !wxStrchr( theFilter, wxT('|') ) ) {    // only one filter ==> default text
 255         filterBuffer.Printf(_("Files (%s)|%s"),
 256                             theFilter.c_str(), theFilter.c_str());
 257     }
 258     else {                                // more then one filter
 259         filterBuffer = theFilter;
 260
 261     }
 262
 263     filterBuffer += wxT("|");
 264     // Replace | with \0
 265     for (i = 0; i < filterBuffer.Len(); i++ ) {
 266         if ( filterBuffer.GetChar(i) == wxT('|') ) {
 267             filterBuffer[i] = wxT('\0');
 268         }
 269     }
 270
 271     of.lpstrFilter  = (LPTSTR)(const wxChar *)filterBuffer;
 272     of.nFilterIndex = m_filterIndex + 1;
 273
 274     //=== Setting defaultFileName >>=========================================
 275
 276     wxStrncpy( fileNameBuffer, (const wxChar *)m_fileName, wxMAXPATH-1 );
 277     fileNameBuffer[ wxMAXPATH-1 ] = wxT('\0');
 278
 279     of.lpstrFile = fileNameBuffer;  // holds returned filename
 280     of.nMaxFile  = wxMAXPATH;
 281
 282     //== Execute FileDialog >>=================================================
 283
 284     bool success = (m_dialogStyle & wxSAVE ? GetSaveFileName(&of)
 285                                            : GetOpenFileName(&of)) != 0;
 286
 287     DWORD errCode = CommDlgExtendedError();
 288
 289 #ifdef __WIN32__
 290     if (!success && (errCode == CDERR_STRUCTSIZE))
 291     {
 292         // The struct size has changed so try a smaller or bigger size
 293
 294         int oldStructSize = of.lStructSize;
 295         of.lStructSize       = oldStructSize - (sizeof(void *) + 2*sizeof(DWORD));
 296         success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
 297                                             : (GetOpenFileName(&of) != 0);
 298         errCode = CommDlgExtendedError();
 299
 300         if (!success && (errCode == CDERR_STRUCTSIZE))
 301         {
 302             of.lStructSize       = oldStructSize + (sizeof(void *) + 2*sizeof(DWORD));
 303             success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
 304                                             : (GetOpenFileName(&of) != 0);
 305         }
 306     }
 307 #endif // __WIN32__
 308
 309     if ( success )
 310     {
 311         m_fileNames.Empty();
 312
 313         if ( ( m_dialogStyle & wxMULTIPLE ) &&
 314 #if defined(OFN_EXPLORER)
 315              ( fileNameBuffer[of.nFileOffset-1] == wxT('\0') )
 316 #else
 317              ( fileNameBuffer[of.nFileOffset-1] == wxT(' ') )
 318 #endif // OFN_EXPLORER
 319            )
 320         {
 321 #if defined(OFN_EXPLORER)
 322             m_dir = fileNameBuffer;
 323             i = of.nFileOffset;
 324             m_fileName = &fileNameBuffer[i];
 325             m_fileNames.Add(m_fileName);
 326             i += m_fileName.Len() + 1;
 327
 328             while (fileNameBuffer[i] != wxT('\0'))
 329             {
 330                 m_fileNames.Add(&fileNameBuffer[i]);
 331                 i += wxStrlen(&fileNameBuffer[i]) + 1;
 332             }
 333 #else
 334             wxStringTokenizer toke(fileNameBuffer, _T(" \t\r\n"));
 335             m_dir = toke.GetNextToken();
 336             m_fileName = toke.GetNextToken();
 337             m_fileNames.Add(m_fileName);
 338
 339             while (toke.HasMoreTokens())
 340                 m_fileNames.Add(toke.GetNextToken());
 341 #endif // OFN_EXPLORER
 342
 343             wxString dir(m_dir);
 344             if ( m_dir.Last() != _T('\\') )
 345                 dir += _T('\\');
 346
 347             m_path = dir + m_fileName;
 348             m_filterIndex = (int)of.nFilterIndex - 1;
 349         }
 350         else
 351         {
 352             //=== Adding the correct extension >>=================================
 353
 354             m_filterIndex = (int)of.nFilterIndex - 1;
 355
 356             if ( !of.nFileExtension ||
 357                  (of.nFileExtension && fileNameBuffer[of.nFileExtension] == wxT('\0')) )
 358             {
 359                 // User has typed a filename without an extension:
 360                 const wxChar* extension = filterBuffer;
 361                 int   maxFilter = (int)(of.nFilterIndex*2L) - 1;
 362
 363                 for( int i = 0; i < maxFilter; i++ )           // get extension
 364                     extension = extension + wxStrlen( extension ) + 1;
 365
 366                 m_fileName = AppendExtension(fileNameBuffer, extension);
 367                 wxStrncpy(fileNameBuffer, m_fileName.c_str(), wxMin(m_fileName.Len(), wxMAXPATH-1));
 368                 fileNameBuffer[wxMin(m_fileName.Len(), wxMAXPATH-1)] = wxT('\0');
 369             }
 370
 371             m_path = fileNameBuffer;
 372             m_fileName = wxFileNameFromPath(fileNameBuffer);
 373             m_fileNames.Add(m_fileName);
 374             m_dir = wxPathOnly(fileNameBuffer);
 375         }
 376     }
 377     else
 378     {
 379         // common dialog failed - why?
 380 #ifdef __WXDEBUG__
 381         DWORD dwErr = CommDlgExtendedError();
 382         if ( dwErr != 0 )
 383         {
 384             // this msg is only for developers
 385             wxLogError(wxT("Common dialog failed with error code %0lx."),
 386                        dwErr);
 387         }
 388         //else: it was just cancelled
 389 #endif
 390     }
 391
 392     return success ? wxID_OK : wxID_CANCEL;
 393
 394 }
 395
 396 #endif // wxUSE_FILEDLG
 397