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MSLU fixes
[wxWidgets.git] / 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 and Markus Holzem
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 #ifdef __GNUG__
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
32
33 #ifndef WX_PRECOMP
34 #include "wx/utils.h"
35 #include "wx/msgdlg.h"
36 #include "wx/dialog.h"
37 #include "wx/filedlg.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(__SALFORDC__) || defined(__WXWINE__)
46 #include <commdlg.h>
47 #endif
48
49 #include <math.h>
50 #include <stdlib.h>
51 #include <string.h>
52
53 #include "wx/tokenzr.h"
54
55 #ifndef OFN_EXPLORER
56 #define OFN_EXPLORER 0x00080000
57 #endif
58
59 // ----------------------------------------------------------------------------
60 // constants
61 // ----------------------------------------------------------------------------
62
63 #ifdef __WIN32__
64 # define wxMAXPATH 4096
65 #else
66 # define wxMAXPATH 1024
67 #endif
68
69 # define wxMAXFILE 1024
70
71 # define wxMAXEXT 5
72
73 // ============================================================================
74 // implementation
75 // ============================================================================
76
77 // ----------------------------------------------------------------------------
78 // wxWin macros
79 // ----------------------------------------------------------------------------
80
81 IMPLEMENT_CLASS(wxFileDialog, wxDialog)
82
83 // ----------------------------------------------------------------------------
84 // global functions
85 // ----------------------------------------------------------------------------
86
87 wxString wxFileSelector(const wxChar *title,
88 const wxChar *defaultDir,
89 const wxChar *defaultFileName,
90 const wxChar *defaultExtension,
91 const wxChar *filter,
92 int flags,
93 wxWindow *parent,
94 int x, int y)
95 {
96 // In the original implementation, defaultExtension is passed to the
97 // lpstrDefExt member of OPENFILENAME. This extension, if non-NULL, is
98 // appended to the filename if the user fails to type an extension. The new
99 // implementation (taken from wxFileSelectorEx) appends the extension
100 // automatically, by looking at the filter specification. In fact this
101 // should be better than the native Microsoft implementation because
102 // Windows only allows *one* default extension, whereas here we do the
103 // right thing depending on the filter the user has chosen.
104
105 // If there's a default extension specified but no filter, we create a
106 // suitable filter.
107
108 wxString filter2;
109 if ( defaultExtension && !filter )
110 filter2 = wxString(wxT("*.")) + defaultExtension;
111 else if ( filter )
112 filter2 = filter;
113
114 wxString defaultDirString;
115 if (defaultDir)
116 defaultDirString = defaultDir;
117
118 wxString defaultFilenameString;
119 if (defaultFileName)
120 defaultFilenameString = defaultFileName;
121
122 wxFileDialog fileDialog(parent, title, defaultDirString,
123 defaultFilenameString, filter2,
124 flags, wxPoint(x, y));
125 if( wxStrlen(defaultExtension) != 0 )
126 {
127 int filterFind = 0,
128 filterIndex = 0;
129
130 for( unsigned int i = 0; i < filter2.Len(); i++ )
131 {
132 if( filter2.GetChar(i) == wxT('|') )
133 {
134 // save the start index of the new filter
135 unsigned int is = i++;
136
137 // find the end of the filter
138 for( ; i < filter2.Len(); i++ )
139 {
140 if(filter2[i] == wxT('|'))
141 break;
142 }
143
144 if( i-is-1 > 0 && is+1 < filter2.Len() )
145 {
146 if( filter2.Mid(is+1,i-is-1).Contains(defaultExtension) )
147 {
148 filterFind = filterIndex;
149 break;
150 }
151 }
152
153 filterIndex++;
154 }
155 }
156
157 fileDialog.SetFilterIndex(filterFind);
158 }
159
160 wxString filename;
161 if ( fileDialog.ShowModal() == wxID_OK )
162 {
163 filename = fileDialog.GetPath();
164 }
165
166 return filename;
167 }
168
169
170 wxString wxFileSelectorEx(const wxChar *title,
171 const wxChar *defaultDir,
172 const wxChar *defaultFileName,
173 int* defaultFilterIndex,
174 const wxChar *filter,
175 int flags,
176 wxWindow* parent,
177 int x,
178 int y)
179
180 {
181 wxFileDialog fileDialog(parent,
182 title ? title : wxT(""),
183 defaultDir ? defaultDir : wxT(""),
184 defaultFileName ? defaultFileName : wxT(""),
185 filter ? filter : wxT(""),
186 flags, wxPoint(x, y));
187
188 wxString filename;
189 if ( fileDialog.ShowModal() == wxID_OK )
190 {
191 if ( defaultFilterIndex )
192 *defaultFilterIndex = fileDialog.GetFilterIndex();
193
194 filename = fileDialog.GetPath();
195 }
196
197 return filename;
198 }
199
200 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
201 const wxString& defaultDir, const wxString& defaultFileName, const wxString& wildCard,
202 long style, const wxPoint& WXUNUSED(pos))
203 {
204 m_message = message;
205 m_dialogStyle = style;
206 if ( ( m_dialogStyle & wxMULTIPLE ) && ( m_dialogStyle & wxSAVE ) )
207 m_dialogStyle &= ~wxMULTIPLE;
208 m_parent = parent;
209 m_path = wxT("");
210 m_fileName = defaultFileName;
211 m_dir = defaultDir;
212 m_wildCard = wildCard;
213 m_filterIndex = 0;
214 }
215
216 void wxFileDialog::GetPaths(wxArrayString& paths) const
217 {
218 paths.Empty();
219
220 wxString dir(m_dir);
221 if ( m_dir.Last() != _T('\\') )
222 dir += _T('\\');
223
224 size_t count = m_fileNames.GetCount();
225 for ( size_t n = 0; n < count; n++ )
226 {
227 paths.Add(dir + m_fileNames[n]);
228 }
229 }
230
231 int wxFileDialog::ShowModal()
232 {
233 HWND hWnd = 0;
234 if (m_parent) hWnd = (HWND) m_parent->GetHWND();
235 if (!hWnd && wxTheApp->GetTopWindow())
236 hWnd = (HWND) wxTheApp->GetTopWindow()->GetHWND();
237
238 static wxChar fileNameBuffer [ wxMAXPATH ]; // the file-name
239 wxChar titleBuffer [ wxMAXFILE+1+wxMAXEXT ]; // the file-name, without path
240
241 *fileNameBuffer = wxT('\0');
242 *titleBuffer = wxT('\0');
243
244 long msw_flags = 0;
245 if ( (m_dialogStyle & wxHIDE_READONLY) || (m_dialogStyle & wxSAVE) )
246 msw_flags |= OFN_HIDEREADONLY;
247 if ( m_dialogStyle & wxFILE_MUST_EXIST )
248 msw_flags |= OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
249
250 if (m_dialogStyle & wxMULTIPLE )
251 {
252 // OFN_EXPLORER must always be specified with OFN_ALLOWMULTISELECT
253 msw_flags |= OFN_EXPLORER | OFN_ALLOWMULTISELECT;
254 }
255
256 // if wxCHANGE_DIR flag is not given we shouldn't change the CWD which the
257 // standard dialog does by default
258 if ( !(m_dialogStyle & wxCHANGE_DIR) )
259 {
260 msw_flags |= OFN_NOCHANGEDIR;
261 }
262
263 if ( m_dialogStyle & wxOVERWRITE_PROMPT )
264 {
265 msw_flags |= OFN_OVERWRITEPROMPT;
266 }
267
268 OPENFILENAME of;
269 wxZeroMemory(of);
270
271 // the OPENFILENAME struct has been extended in newer version of
272 // comcdlg32.dll, but as we don't use the extended fields anyhow, set
273 // the struct size to the old value - otherwise, the programs compiled
274 // with new headers will not work with the old libraries
275 #if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0500)
276 of.lStructSize = sizeof(OPENFILENAME) -
277 (sizeof(void *) + 2*sizeof(DWORD));
278 #else // old headers
279 of.lStructSize = sizeof(OPENFILENAME);
280 #endif
281
282 of.hwndOwner = hWnd;
283 of.lpstrTitle = WXSTRINGCAST m_message;
284 of.lpstrFileTitle = titleBuffer;
285 of.nMaxFileTitle = wxMAXFILE + 1 + wxMAXEXT; // Windows 3.0 and 3.1
286
287 // Convert forward slashes to backslashes (file selector doesn't like
288 // forward slashes) and also squeeze multiple consecutive slashes into one
289 // as it doesn't like two backslashes in a row neither
290
291 wxString dir;
292 size_t i, len = m_dir.length();
293 dir.reserve(len);
294 for ( i = 0; i < len; i++ )
295 {
296 wxChar ch = m_dir[i];
297 switch ( ch )
298 {
299 case _T('/'):
300 // convert to backslash
301 ch = _T('\\');
302
303 // fall through
304
305 case _T('\\'):
306 while ( i < len - 1 )
307 {
308 wxChar chNext = m_dir[i + 1];
309 if ( chNext != _T('\\') && chNext != _T('/') )
310 break;
311
312 // ignore the next one
313 i++;
314 }
315 // fall through
316
317 default:
318 // normal char
319 dir += ch;
320 }
321 }
322
323 of.lpstrInitialDir = dir.c_str();
324
325 of.Flags = msw_flags;
326
327
328 //=== Like Alejandro Sierra's wildcard modification >>===================
329 /*
330 In wxFileSelector you can put, instead of a single wild_card,
331 pairs of strings separated by '|'.
332 The first string is a description, and the
333 second is the wild card. You can put any number of pairs.
334
335 eg. "description1 (*.ex1)|*.ex1|description2 (*.ex2)|*.ex2"
336
337 If you put a single wild card, it works as before the modification.
338 */
339 //=======================================================================
340
341 wxString theFilter;
342 if ( wxStrlen(m_wildCard) == 0 )
343 theFilter = wxString(wxT("*.*"));
344 else
345 theFilter = m_wildCard ;
346 wxString filterBuffer;
347
348 if ( !wxStrchr( theFilter, wxT('|') ) ) { // only one filter ==> default text
349 filterBuffer.Printf(_("Files (%s)|%s"),
350 theFilter.c_str(), theFilter.c_str());
351 }
352 else { // more then one filter
353 filterBuffer = theFilter;
354
355 }
356
357 filterBuffer += wxT("|");
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)(const wxChar *)filterBuffer;
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 //== Execute FileDialog >>=================================================
377
378 bool success = (m_dialogStyle & wxSAVE ? GetSaveFileName(&of)
379 : GetOpenFileName(&of)) != 0;
380
381 DWORD errCode = CommDlgExtendedError();
382
383 #ifdef __WIN32__
384 if (!success && (errCode == CDERR_STRUCTSIZE))
385 {
386 // The struct size has changed so try a smaller or bigger size
387
388 int oldStructSize = of.lStructSize;
389 of.lStructSize = oldStructSize - (sizeof(void *) + 2*sizeof(DWORD));
390 success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
391 : (GetOpenFileName(&of) != 0);
392 errCode = CommDlgExtendedError();
393
394 if (!success && (errCode == CDERR_STRUCTSIZE))
395 {
396 of.lStructSize = oldStructSize + (sizeof(void *) + 2*sizeof(DWORD));
397 success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
398 : (GetOpenFileName(&of) != 0);
399 }
400 }
401
402 #if wxUSE_UNICODE_MSLU && defined(OFN_EXPLORER)
403 // VS: these's a bug in unicows.dll - when multiple files are
404 // selected, of.nFileOffset doesn't point to the first
405 // filename but rather to the last component of directory
406 // name. Let's try to fix it:
407 if ( (m_dialogStyle & wxMULTIPLE) &&
408 (fileNameBuffer[of.nFileOffset-1] != wxT('\0')) &&
409 wxGetOsVersion() == wxWIN95 /*using unicows.dll*/)
410 {
411 if ( wxDirExists(fileNameBuffer) )
412 {
413 // 1st component is dir => multiple files selected
414 of.nFileOffset = wxStrlen(fileNameBuffer)+1;
415 }
416 }
417 #endif // wxUSE_UNICODE_MSLU
418
419 #endif // __WIN32__
420
421 if ( success )
422 {
423 m_fileNames.Empty();
424
425 if ( ( m_dialogStyle & wxMULTIPLE ) &&
426 #if defined(OFN_EXPLORER)
427 ( fileNameBuffer[of.nFileOffset-1] == wxT('\0') ) )
428 #else
429 ( fileNameBuffer[of.nFileOffset-1] == wxT(' ') ) )
430 #endif // OFN_EXPLORER
431 {
432 #if defined(OFN_EXPLORER)
433 m_dir = fileNameBuffer;
434 i = of.nFileOffset;
435 m_fileName = &fileNameBuffer[i];
436 m_fileNames.Add(m_fileName);
437 i += m_fileName.Len() + 1;
438
439 while (fileNameBuffer[i] != wxT('\0'))
440 {
441 m_fileNames.Add(&fileNameBuffer[i]);
442 i += wxStrlen(&fileNameBuffer[i]) + 1;
443 }
444 #else
445 wxStringTokenizer toke(fileNameBuffer, _T(" \t\r\n"));
446 m_dir = toke.GetNextToken();
447 m_fileName = toke.GetNextToken();
448 m_fileNames.Add(m_fileName);
449
450 while (toke.HasMoreTokens())
451 m_fileNames.Add(toke.GetNextToken());
452 #endif // OFN_EXPLORER
453
454 wxString dir(m_dir);
455 if ( m_dir.Last() != _T('\\') )
456 dir += _T('\\');
457
458 m_fileNames.Sort();
459 m_path = dir + m_fileName;
460 }
461 else
462 {
463 const wxChar* extension = NULL;
464
465 //=== Adding the correct extension >>=================================
466
467 m_filterIndex = (int)of.nFilterIndex - 1;
468
469 if ( !of.nFileExtension ||
470 (of.nFileExtension && fileNameBuffer[of.nFileExtension] == wxT('\0')) )
471 {
472 // User has typed a filename without an extension:
473
474 int maxFilter = (int)(of.nFilterIndex*2L-1L);
475 extension = filterBuffer;
476
477 for( int i = 0; i < maxFilter; i++ ) { // get extension
478 extension = extension + wxStrlen( extension ) +1;
479 }
480
481 extension = wxStrrchr( extension, wxT('.') );
482 if ( extension // != "blabla"
483 && !wxStrrchr( extension, wxT('*') ) // != "blabla.*"
484 && !wxStrrchr( extension, wxT('?') ) // != "blabla.?"
485 && extension[1] // != "blabla."
486 && extension[1] != wxT(' ') ) // != "blabla. "
487 {
488 // now concat extension to the fileName:
489 m_fileName = wxString(fileNameBuffer) + extension;
490
491 int len = wxStrlen( fileNameBuffer );
492 wxStrncpy( fileNameBuffer + len, extension, wxMAXPATH - len );
493 fileNameBuffer[ wxMAXPATH -1 ] = wxT('\0');
494 }
495 }
496
497 m_path = fileNameBuffer;
498 m_fileName = wxFileNameFromPath(fileNameBuffer);
499 m_fileNames.Add(m_fileName);
500 m_dir = wxPathOnly(fileNameBuffer);
501 }
502 }
503 else
504 {
505 // common dialog failed - why?
506 #ifdef __WXDEBUG__
507 DWORD dwErr = CommDlgExtendedError();
508 if ( dwErr != 0 )
509 {
510 // this msg is only for developers
511 wxLogError(wxT("Common dialog failed with error code %0lx."),
512 dwErr);
513 }
514 //else: it was just cancelled
515 #endif
516 }
517
518 return success ? wxID_OK : wxID_CANCEL;
519
520 }
521
522 // Generic file load/save dialog (for internal use only)
523 static
524 wxString wxDefaultFileSelector(bool load,
525 const wxChar *what,
526 const wxChar *extension,
527 const wxChar *default_name,
528 wxWindow *parent)
529 {
530 wxString prompt;
531 wxString str;
532 if (load)
533 str = _("Load %s file");
534 else
535 str = _("Save %s file");
536 prompt.Printf(str, what);
537
538 const wxChar *ext = extension;
539 if (*ext == wxT('.'))
540 ext++;
541
542 wxString wild;
543 wild.Printf(wxT("*.%s"), ext);
544
545 return wxFileSelector(prompt, NULL, default_name, ext, wild,
546 load ? wxOPEN : wxSAVE, parent);
547 }
548
549 // Generic file load dialog
550 WXDLLEXPORT wxString wxLoadFileSelector(const wxChar *what,
551 const wxChar *extension,
552 const wxChar *default_name,
553 wxWindow *parent)
554 {
555 return wxDefaultFileSelector(TRUE, what, extension, default_name, parent);
556 }
557
558 // Generic file save dialog
559 WXDLLEXPORT wxString wxSaveFileSelector(const wxChar *what,
560 const wxChar *extension,
561 const wxChar *default_name,
562 wxWindow *parent)
563 {
564 return wxDefaultFileSelector(FALSE, what, extension, default_name, parent);
565 }
566
567 #endif // wxUSE_FILEDLG
568
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