src/common/fldlgcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/fldlgcmn.cpp
   3 // Purpose:     wxFileDialog common functions
   4 // Author:      John Labenski
   5 // Modified by:
   6 // Created:     14.06.03 (extracted from src/*/filedlg.cpp)
   7 // RCS-ID:
   8 // Copyright:   (c) Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "filedlg.h"
  14 #endif
  15
  16 #ifdef __BORLANDC__
  17 #pragma hdrstop
  18 #endif
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/string.h"
  25     #include "wx/intl.h"
  26     #include "wx/window.h"
  27 #endif // WX_PRECOMP
  28
  29 #include "wx/filedlg.h"
  30
  31 #if wxUSE_FILEDLG
  32
  33 //----------------------------------------------------------------------------
  34 // wxFileDialogBase
  35 //----------------------------------------------------------------------------
  36
  37 IMPLEMENT_DYNAMIC_CLASS(wxFileDialogBase, wxDialog)
  38
  39 wxFileDialogBase::wxFileDialogBase(wxWindow *parent,
  40                                    const wxString& message,
  41                                    const wxString& defaultDir,
  42                                    const wxString& defaultFile,
  43                                    const wxString& wildCard,
  44                                    long style,
  45                                    const wxPoint& WXUNUSED(pos))
  46 {
  47     m_parent = parent;
  48     m_message = message;
  49     m_dir = defaultDir;
  50     m_fileName = defaultFile;
  51     m_wildCard = wildCard;
  52     m_dialogStyle = style;
  53     m_path = wxT("");
  54     m_filterIndex = 0;
  55
  56     if (m_wildCard.IsEmpty())
  57         m_wildCard = wxFileSelectorDefaultWildcardStr;
  58
  59     // convert m_wildCard from "*.bar" to "Files (*.bar)|*.bar"
  60     if ( m_wildCard.Find(wxT('|')) == wxNOT_FOUND )
  61     {
  62         m_wildCard.Printf(_("Files (%s)|%s"),
  63                           m_wildCard.c_str(), m_wildCard.c_str());
  64     }
  65 }
  66
  67 // Parses the filterStr, returning the number of filters.
  68 // Returns 0 if none or if there's a problem.
  69 // filterStr is in the form: "All files (*.*)|*.*|JPEG Files (*.jpeg)|*.jpg"
  70
  71 int wxFileDialogBase::ParseWildcard(const wxString& filterStr,
  72                                     wxArrayString& descriptions,
  73                                     wxArrayString& filters)
  74 {
  75     descriptions.Clear();
  76     filters.Clear();
  77
  78     wxString str(filterStr);
  79
  80     wxString description, filter;
  81     for ( int pos = 0; pos != wxNOT_FOUND; )
  82     {
  83         pos = str.Find(wxT('|'));
  84         if ( pos == wxNOT_FOUND )
  85         {
  86             // if there are no '|'s at all in the string just take the entire
  87             // string as filter
  88             if ( filters.IsEmpty() )
  89             {
  90                 descriptions.Add(filterStr);
  91                 filters.Add(filterStr);
  92             }
  93             else
  94             {
  95                 wxFAIL_MSG( _T("missing '|' in the wildcard string!") );
  96             }
  97
  98             break;
  99         }
 100
 101         description = str.Left(pos);
 102         str = str.Mid(pos + 1);
 103         pos = str.Find(wxT('|'));
 104         if ( pos == wxNOT_FOUND )
 105         {
 106             filter = str;
 107         }
 108         else
 109         {
 110             filter = str.Left(pos);
 111             str = str.Mid(pos + 1);
 112         }
 113
 114         descriptions.Add(description);
 115         filters.Add(filter);
 116     }
 117
 118     return filters.GetCount();
 119 }
 120
 121 wxString wxFileDialogBase::AppendExtension(const wxString &filePath,
 122                                            const wxString &extensionList)
 123 {
 124     // strip off path, to avoid problems with "path.bar/foo"
 125     wxString fileName = filePath.AfterLast(wxFILE_SEP_PATH);
 126
 127     // if fileName is of form "foo.bar" it's ok, return it
 128     int idx_dot = fileName.Find(wxT('.'), TRUE);
 129     if ((idx_dot != wxNOT_FOUND) && (idx_dot < (int)fileName.Len() - 1))
 130         return filePath;
 131
 132     // get the first extension from extensionList, or all of it
 133     wxString ext = extensionList.BeforeFirst(wxT(';'));
 134
 135     // if ext == "foo" or "foo." there's no extension
 136     int idx_ext_dot = ext.Find(wxT('.'), TRUE);
 137     if ((idx_ext_dot == wxNOT_FOUND) || (idx_ext_dot == (int)ext.Len() - 1))
 138         return filePath;
 139     else
 140         ext = ext.AfterLast(wxT('.'));
 141
 142     // if ext == "*" or "bar*" or "b?r" or " " then its not valid
 143     if ((ext.Find(wxT('*')) != wxNOT_FOUND) ||
 144         (ext.Find(wxT('?')) != wxNOT_FOUND) ||
 145         (ext.Strip(wxString::both).IsEmpty()))
 146         return filePath;
 147
 148     // if fileName doesn't have a '.' then add one
 149     if (filePath.Last() != wxT('.'))
 150         ext = wxT(".") + ext;
 151
 152     return filePath + ext;
 153 }
 154
 155 //----------------------------------------------------------------------------
 156 // wxFileDialog convenience functions
 157 //----------------------------------------------------------------------------
 158
 159 wxString wxFileSelector(const wxChar *title,
 160                                const wxChar *defaultDir,
 161                                const wxChar *defaultFileName,
 162                                const wxChar *defaultExtension,
 163                                const wxChar *filter,
 164                                int flags,
 165                                wxWindow *parent,
 166                                int x, int y)
 167 {
 168     // The defaultExtension, if non-NULL, is
 169     // appended to the filename if the user fails to type an extension. The new
 170     // implementation (taken from wxFileSelectorEx) appends the extension
 171     // automatically, by looking at the filter specification. In fact this
 172     // should be better than the native Microsoft implementation because
 173     // Windows only allows *one* default extension, whereas here we do the
 174     // right thing depending on the filter the user has chosen.
 175
 176     // If there's a default extension specified but no filter, we create a
 177     // suitable filter.
 178
 179     wxString filter2;
 180     if ( defaultExtension && !filter )
 181         filter2 = wxString(wxT("*.")) + defaultExtension;
 182     else if ( filter )
 183         filter2 = filter;
 184
 185     wxString defaultDirString;
 186     if (defaultDir)
 187         defaultDirString = defaultDir;
 188
 189     wxString defaultFilenameString;
 190     if (defaultFileName)
 191         defaultFilenameString = defaultFileName;
 192
 193     wxFileDialog fileDialog(parent, title, defaultDirString,
 194                             defaultFilenameString, filter2,
 195                             flags, wxPoint(x, y));
 196
 197    // if filter is of form "All files (*)|*|..." set correct filter index
 198     if((wxStrlen(defaultExtension) != 0) && (filter2.Find(wxT('|')) != wxNOT_FOUND))
 199             {
 200         int filterIndex = 0;
 201
 202         wxArrayString descriptions, filters;
 203         // don't care about errors, handled already by wxFileDialog
 204         (void)wxFileDialogBase::ParseWildcard(filter2, descriptions, filters);
 205         for (size_t n=0; n<filters.GetCount(); n++)
 206                 {
 207             if (filters[n].Contains(defaultExtension))
 208                     {
 209                 filterIndex = n;
 210                         break;
 211                     }
 212                 }
 213
 214         if (filterIndex > 0)
 215             fileDialog.SetFilterIndex(filterIndex);
 216         }
 217
 218     wxString filename;
 219     if ( fileDialog.ShowModal() == wxID_OK )
 220     {
 221         filename = fileDialog.GetPath();
 222     }
 223
 224     return filename;
 225 }
 226
 227 //----------------------------------------------------------------------------
 228 // wxFileSelectorEx
 229 //----------------------------------------------------------------------------
 230
 231 wxString wxFileSelectorEx(const wxChar *title,
 232                           const wxChar *defaultDir,
 233                           const wxChar *defaultFileName,
 234                           int* defaultFilterIndex,
 235                           const wxChar *filter,
 236                           int       flags,
 237                           wxWindow* parent,
 238                           int       x,
 239                           int       y)
 240
 241 {
 242     wxFileDialog fileDialog(parent,
 243                             title ? title : wxT(""),
 244                             defaultDir ? defaultDir : wxT(""),
 245                             defaultFileName ? defaultFileName : wxT(""),
 246                             filter ? filter : wxT(""),
 247                             flags, wxPoint(x, y));
 248
 249     wxString filename;
 250     if ( fileDialog.ShowModal() == wxID_OK )
 251     {
 252         if ( defaultFilterIndex )
 253             *defaultFilterIndex = fileDialog.GetFilterIndex();
 254
 255         filename = fileDialog.GetPath();
 256     }
 257
 258     return filename;
 259 }
 260
 261 //----------------------------------------------------------------------------
 262 // wxDefaultFileSelector - Generic load/save dialog (for internal use only)
 263 //----------------------------------------------------------------------------
 264
 265 static wxString wxDefaultFileSelector(bool load,
 266                                       const wxChar *what,
 267                                       const wxChar *extension,
 268                                       const wxChar *default_name,
 269                                       wxWindow *parent)
 270 {
 271     wxString prompt;
 272     wxString str;
 273     if (load)
 274         str = _("Load %s file");
 275     else
 276         str = _("Save %s file");
 277     prompt.Printf(str, what);
 278
 279     wxString wild;
 280     const wxChar *ext = extension;
 281     if ( ext )
 282     {
 283         if ( *ext == wxT('.') )
 284             ext++;
 285
 286         wild.Printf(wxT("*.%s"), ext);
 287     }
 288     else // no extension specified
 289     {
 290         wild = wxFileSelectorDefaultWildcardStr;
 291     }
 292
 293     return wxFileSelector(prompt, NULL, default_name, ext, wild,
 294                           load ? wxOPEN : wxSAVE, parent);
 295 }
 296
 297 //----------------------------------------------------------------------------
 298 // wxLoadFileSelector
 299 //----------------------------------------------------------------------------
 300
 301 WXDLLEXPORT wxString wxLoadFileSelector(const wxChar *what,
 302                                         const wxChar *extension,
 303                                         const wxChar *default_name,
 304                                         wxWindow *parent)
 305 {
 306     return wxDefaultFileSelector(TRUE, what, extension, default_name, parent);
 307 }
 308
 309 //----------------------------------------------------------------------------
 310 // wxSaveFileSelector
 311 //----------------------------------------------------------------------------
 312
 313 WXDLLEXPORT wxString wxSaveFileSelector(const wxChar *what,
 314                                         const wxChar *extension,
 315                                         const wxChar *default_name,
 316                                         wxWindow *parent)
 317 {
 318     return wxDefaultFileSelector(FALSE, what, extension, default_name, parent);
 319 }
 320
 321 #endif // wxUSE_FILEDLG
 322