src/gtk/filedlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gtk/filedlg.cpp
   3 // Purpose:     native implementation of wxFileDialog
   4 // Author:      Robert Roebling, Zbigniew Zagorski
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, 2004 Zbigniew Zagorski
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "filedlg.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #if wxUSE_FILEDLG && defined(__WXGTK24__)
  18
  19 #include "wx/filedlg.h"
  20 #include "wx/utils.h"
  21 #include "wx/intl.h"
  22 #include "wx/filename.h"
  23 #include "wx/msgdlg.h"
  24
  25 #include <gtk/gtk.h>
  26 #include "wx/gtk/private.h"
  27
  28 //-----------------------------------------------------------------------------
  29 // idle system
  30 //-----------------------------------------------------------------------------
  31
  32 extern void wxapp_install_idle_handler();
  33 extern bool g_isIdle;
  34
  35 //-----------------------------------------------------------------------------
  36 // "clicked" for OK-button
  37 //-----------------------------------------------------------------------------
  38
  39 static void gtk_filedialog_ok_callback(GtkWidget *widget, wxFileDialog *dialog)
  40 {
  41     int style = dialog->GetStyle();
  42     gchar* text = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget));
  43     wxString filename(wxGTK_CONV_BACK(text));
  44
  45     if ((style & wxSAVE) && (style & wxOVERWRITE_PROMPT))
  46     {
  47         if (wxFileExists(filename))
  48         {
  49             wxString msg;
  50             msg.Printf(
  51              _("File '%s' already exists, do you really want to overwrite it?"),
  52              filename.c_str());
  53
  54             wxMessageDialog dlg(dialog, msg, _("Confirm"),
  55                                wxYES_NO | wxICON_QUESTION);
  56             if (dlg.ShowModal() != wxID_YES)
  57                 return;
  58         }
  59     }
  60     else if ((style & wxOPEN) && ( style & wxFILE_MUST_EXIST))
  61     {
  62         if (!wxFileExists( filename ))
  63         {
  64             wxMessageDialog dlg(dialog,
  65                                 _("Please choose an existing file."),
  66                                 _("Error"), wxOK | wxICON_ERROR);
  67             dlg.ShowModal();
  68
  69             return;
  70         }
  71     }
  72
  73     // change to the directory where the user went if asked
  74     if (style & wxCHANGE_DIR)
  75     {
  76         wxString cwd;
  77         wxSplitPath(filename, &cwd, NULL, NULL);
  78
  79         if (cwd != wxGetCwd())
  80         {
  81             wxSetWorkingDirectory(cwd);
  82         }
  83     }
  84
  85     dialog->SetPath(filename);
  86     dialog->UpdateFromDialog();
  87
  88     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_OK);
  89     event.SetEventObject(dialog);
  90     dialog->GetEventHandler()->ProcessEvent(event);
  91 }
  92
  93 //-----------------------------------------------------------------------------
  94 // "clicked" for Cancel-button
  95 //-----------------------------------------------------------------------------
  96
  97 static void gtk_filedialog_cancel_callback(GtkWidget *WXUNUSED(w),
  98                                            wxFileDialog *dialog)
  99 {
 100     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 101     event.SetEventObject(dialog);
 102     dialog->GetEventHandler()->ProcessEvent(event);
 103 }
 104
 105 static void gtk_filedialog_response_callback(GtkWidget *w,
 106                                              int response,
 107                                              wxFileDialog *dialog)
 108 {
 109     wxapp_install_idle_handler();
 110
 111     if (response == GTK_RESPONSE_ACCEPT)
 112         gtk_filedialog_ok_callback(w, dialog);
 113     else if (response == GTK_RESPONSE_CANCEL)
 114         gtk_filedialog_cancel_callback(w, dialog);
 115     else // "delete"
 116     {
 117         gtk_filedialog_cancel_callback(w, dialog);
 118         dialog->m_destroyed_by_delete = TRUE;
 119     }
 120 }
 121
 122 //-----------------------------------------------------------------------------
 123 // wxFileDialog
 124 //-----------------------------------------------------------------------------
 125
 126 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxFileDialogBase)
 127
 128 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 129                            const wxString& defaultDir,
 130                            const wxString& defaultFileName,
 131                            const wxString& wildCard,
 132                            long style, const wxPoint& pos)
 133     : wxFileDialogBase(parent, message, defaultDir, defaultFileName,
 134                        wildCard, style, pos)
 135 {
 136     m_needParent = FALSE;
 137     m_destroyed_by_delete = FALSE;
 138
 139     if (!PreCreation(parent, pos, wxDefaultSize) ||
 140         !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
 141                     wxDefaultValidator, wxT("filedialog")))
 142     {
 143         wxFAIL_MSG( wxT("wxFileDialog creation failed") );
 144         return;
 145     }
 146
 147     bool multiple = (style & wxMULTIPLE) == wxMULTIPLE;
 148     GtkFileChooserAction gtk_action;
 149     GtkWindow* gtk_parent = NULL;
 150     if (parent)
 151         gtk_parent = GTK_WINDOW(parent->m_widget);
 152
 153     gchar* ok_btn_stock;
 154     if ((style & wxSAVE) == wxSAVE)
 155     {
 156         gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
 157         ok_btn_stock = GTK_STOCK_SAVE;
 158     }
 159     else
 160     {
 161         gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
 162         ok_btn_stock = GTK_STOCK_OPEN;
 163     }
 164     m_widget = gtk_file_chooser_dialog_new(
 165                        wxGTK_CONV(m_message),
 166                        gtk_parent,
 167                        gtk_action,
 168                        GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 169                        ok_btn_stock, GTK_RESPONSE_ACCEPT,
 170                        NULL);
 171
 172     gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(m_widget), multiple);
 173
 174     gtk_signal_connect(GTK_OBJECT(m_widget),
 175                              "response",
 176                              GTK_SIGNAL_FUNC(gtk_filedialog_response_callback),
 177                              (gpointer*)this);
 178
 179     m_path = m_dir;
 180     if (!m_path.empty() && m_path.Last() != wxT('/'))
 181         m_path += wxT('/');
 182     m_path += m_fileName;
 183     SetPath(m_path);
 184
 185     SetWildcard(wildCard);
 186     SetFilterIndex(0);
 187 }
 188
 189 wxFileDialog::~wxFileDialog()
 190 {
 191     if (m_destroyed_by_delete)
 192         m_widget = NULL;
 193 }
 194
 195 void wxFileDialog::GetFilenames(wxArrayString& files) const
 196 {
 197     GetPaths(files);
 198     for (size_t n = 0; n < files.GetCount(); n++ )
 199     {
 200         wxString name,ext;
 201         wxSplitPath(files[n], NULL, &name, &ext);
 202         if (!ext.IsEmpty())
 203         {
 204             name += wxT(".");
 205             name += ext;
 206         }
 207         files[n] = name;
 208     }
 209 }
 210
 211 void wxFileDialog::GetPaths(wxArrayString& paths) const
 212 {
 213     paths.Empty();
 214     if (GetWindowStyle() & wxMULTIPLE)
 215     {
 216         GSList *gpathsi =
 217             gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(m_widget));
 218         GSList *gpaths = gpathsi;
 219         while (gpathsi)
 220         {
 221             wxString file = wxGTK_CONV_BACK((gchar*) gpathsi->data);
 222             paths.Add(file);
 223             g_free(gpathsi->data);
 224             gpathsi = gpathsi->next;
 225         }
 226         if (gpaths)
 227             g_slist_free(gpaths);
 228     }
 229     else
 230     {
 231         paths.Add(m_fileName);
 232     }
 233 }
 234
 235 void wxFileDialog::SetMessage(const wxString& message)
 236 {
 237     m_message = message;
 238     SetTitle(message);
 239 }
 240
 241 void wxFileDialog::SetPath(const wxString& path)
 242 {
 243     if (path.empty()) return;
 244
 245     wxFileName fn(path);
 246     m_path = fn.GetFullPath();
 247     m_dir = fn.GetPath();
 248     m_fileName = fn.GetFullName();
 249     UpdateDialog();
 250 }
 251
 252 void wxFileDialog::SetDirectory(const wxString& dir)
 253 {
 254     if (wxDirExists(dir))
 255     {
 256         m_dir = dir;
 257         m_path = wxFileName(m_dir, m_fileName).GetFullPath();
 258         UpdateDialog();
 259     }
 260 }
 261
 262 void wxFileDialog::SetFilename(const wxString& name)
 263 {
 264     m_fileName = name;
 265     m_path = wxFileName(m_dir, m_fileName).GetFullPath();
 266     UpdateDialog();
 267 }
 268
 269 void wxFileDialog::UpdateDialog()
 270 {
 271     // set currently selected directory to match the path:
 272     if (!m_dir.empty() && wxDirExists(m_dir))
 273     {
 274         // NB: This is important -- if we set directory only and not the path,
 275         //     then dialog will still remember old path set using previous
 276         //     call to gtk_chooser_set_filename. If the previous directory
 277         //     was a subdirectory of the directory we want to select now,
 278         //     the dialog would still contain directory selector controls
 279         //     for the subdirectory (with the parent directory selected),
 280         //     instead of showing only the parent directory as expected.
 281         //     This way, we force GtkFileChooser to really change the
 282         //     directory. Finally, it doesn't have to be done if filename
 283         //     is not empty because of the code that sets the filename below.
 284         if (m_fileName.empty())
 285             gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget),
 286                                           wxGTK_CONV(m_dir));
 287
 288         gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 289                                             wxGTK_CONV(m_dir));
 290     }
 291
 292     // if the user set only the directory (e.g. by calling SetDirectory)
 293     // and not the default filename, then we don't want to set the filename:
 294     if (!m_fileName.empty())
 295     {
 296         gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget),
 297                                       wxGTK_CONV(m_path));
 298
 299         // pre-fill the filename when saving, too (there's no text entry
 300         // control when opening a file, so it doesn't make sense to
 301         // do this when opening files):
 302         if (GetWindowStyle() & wxSAVE)
 303         {
 304             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 305                                               wxGTK_CONV(m_fileName));
 306         }
 307     }
 308 }
 309
 310 void wxFileDialog::SetWildcard(const wxString& wildCard)
 311 {
 312     m_wildCard = wildCard;
 313
 314     GtkFileChooser* chooser = GTK_FILE_CHOOSER(m_widget);
 315
 316     // empty current filter list:
 317     GSList* ifilters = gtk_file_chooser_list_filters(chooser);
 318     GSList* filters = ifilters;
 319     while (ifilters)
 320     {
 321         gtk_file_chooser_remove_filter(chooser,GTK_FILE_FILTER(ifilters->data));
 322         ifilters = ifilters->next;
 323     }
 324     g_slist_free(filters);
 325
 326     // parse filters
 327     wxArrayString wildDescriptions, wildFilters;
 328     if (!wxParseCommonDialogsFilter(m_wildCard, wildDescriptions, wildFilters))
 329     {
 330         wxFAIL_MSG( wxT("Wrong file type description") );
 331     }
 332     else
 333     {
 334         // add parsed to GtkChooser
 335         for (size_t n = 0; n < wildFilters.GetCount(); n++)
 336         {
 337             GtkFileFilter* filter = gtk_file_filter_new();
 338             gtk_file_filter_set_name(filter,wxGTK_CONV(wildDescriptions[n]));
 339             wxString after = wildFilters[n];
 340             do
 341             {
 342                 wxString ext = after.BeforeFirst(wxT(';'));
 343                 gtk_file_filter_add_pattern(filter,wxGTK_CONV(ext));
 344                 if (after.Find(wxT(';')) == wxNOT_FOUND)
 345                     break;
 346                 after = after.AfterLast(wxT(';'));
 347             }
 348             while (!after.empty());
 349
 350             gtk_file_chooser_add_filter(chooser, filter);
 351         }
 352     }
 353 }
 354
 355 void wxFileDialog::SetFilterIndex(int filterIndex)
 356 {
 357     m_filterIndex = filterIndex;
 358
 359     GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 360     GSList *fnode = gtk_file_chooser_list_filters(chooser);
 361     GSList *filters = fnode;
 362     int i = 0;
 363     while (fnode)
 364     {
 365         if (i == filterIndex)
 366         {
 367             gtk_file_chooser_set_filter(chooser, GTK_FILE_FILTER(fnode->data));
 368             m_filterIndex = i;
 369             break;
 370         }
 371         i++;
 372         fnode = fnode->next;
 373     }
 374     g_slist_free(filters);
 375 }
 376
 377 void wxFileDialog::UpdateFromDialog()
 378 {
 379     // update filterIndex
 380     GSList *fnode = gtk_file_chooser_list_filters(GTK_FILE_CHOOSER(m_widget));
 381     GSList *filters = fnode;
 382     GtkFileFilter *current =
 383         gtk_file_chooser_get_filter(GTK_FILE_CHOOSER(m_widget));
 384
 385     int i = 0;
 386     m_filterIndex = 0;
 387     while (fnode)
 388     {
 389         if (fnode->data == (gpointer)current)
 390         {
 391             m_filterIndex = i;
 392             break;
 393         }
 394         i++;
 395         fnode = fnode->next;
 396     }
 397     g_slist_free(filters);
 398 }
 399
 400 #endif // wxUSE_FILEDLG && defined(__WXGTK24__)