src/gtk/filedlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/filedlg.cpp
   3 // Purpose:     native implementation of wxFileDialog
   4 // Author:      Robert Roebling, Zbigniew Zagorski, Mart Raudsepp
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, 2004 Zbigniew Zagorski, 2005 Mart Raudsepp
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_FILEDLG && defined(__WXGTK24__)
  14
  15 #include "wx/filedlg.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/intl.h"
  19     #include "wx/msgdlg.h"
  20 #endif
  21
  22 #include <gtk/gtk.h>
  23 #include "wx/gtk/private.h"
  24
  25 #include <unistd.h> // chdir
  26
  27 #include "wx/filename.h" // wxFilename
  28 #include "wx/tokenzr.h" // wxStringTokenizer
  29 #include "wx/filefn.h" // ::wxGetCwd
  30
  31 //-----------------------------------------------------------------------------
  32 // idle system
  33 //-----------------------------------------------------------------------------
  34
  35 extern void wxapp_install_idle_handler();
  36
  37 //-----------------------------------------------------------------------------
  38 // "clicked" for OK-button
  39 //-----------------------------------------------------------------------------
  40
  41 extern "C" {
  42 static void gtk_filedialog_ok_callback(GtkWidget *widget, wxFileDialog *dialog)
  43 {
  44     int style = dialog->GetWindowStyle();
  45     wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));
  46
  47     // gtk version numbers must be identical with the one in ctor (that calls set_do_overwrite_confirmation)
  48 #if GTK_CHECK_VERSION(2,7,3)
  49     if(gtk_check_version(2,7,3) != NULL)
  50 #endif
  51     if ((style & wxFD_SAVE) && (style & wxFD_OVERWRITE_PROMPT))
  52     {
  53         if ( g_file_test(filename, G_FILE_TEST_EXISTS) )
  54         {
  55             wxString msg;
  56
  57             msg.Printf(
  58                 _("File '%s' already exists, do you really want to overwrite it?"),
  59                 wxString(wxConvFileName->cMB2WX(filename)).c_str());
  60
  61             wxMessageDialog dlg(dialog, msg, _("Confirm"),
  62                                wxYES_NO | wxICON_QUESTION);
  63             if (dlg.ShowModal() != wxID_YES)
  64                 return;
  65         }
  66     }
  67
  68     // change to the directory where the user went if asked
  69     if (style & wxFD_CHANGE_DIR)
  70     {
  71         // Use chdir to not care about filename encodings
  72         wxGtkString folder(g_path_get_dirname(filename));
  73         chdir(folder);
  74     }
  75
  76     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_OK);
  77     event.SetEventObject(dialog);
  78     dialog->GetEventHandler()->ProcessEvent(event);
  79 }
  80 }
  81
  82 //-----------------------------------------------------------------------------
  83 // "clicked" for Cancel-button
  84 //-----------------------------------------------------------------------------
  85
  86 extern "C"
  87 {
  88
  89 static void gtk_filedialog_cancel_callback(GtkWidget *w, wxFileDialog *dialog)
  90 {
  91     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
  92     event.SetEventObject(dialog);
  93     dialog->GetEventHandler()->ProcessEvent(event);
  94 }
  95
  96 static void gtk_filedialog_response_callback(GtkWidget *w,
  97                                              gint response,
  98                                              wxFileDialog *dialog)
  99 {
 100     wxapp_install_idle_handler();
 101
 102     if (response == GTK_RESPONSE_ACCEPT)
 103         gtk_filedialog_ok_callback(w, dialog);
 104     else    // GTK_RESPONSE_CANCEL or GTK_RESPONSE_NONE
 105         gtk_filedialog_cancel_callback(w, dialog);
 106 }
 107
 108 static void gtk_filedialog_update_preview_callback(GtkFileChooser *chooser,
 109                                                    gpointer user_data)
 110 {
 111 #if GTK_CHECK_VERSION(2,4,0)
 112     GtkWidget *preview = GTK_WIDGET(user_data);
 113
 114     wxGtkString filename(gtk_file_chooser_get_preview_filename(chooser));
 115
 116     if ( !filename )
 117         return;
 118
 119     GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
 120     gboolean have_preview = pixbuf != NULL;
 121
 122     gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
 123     if ( pixbuf )
 124         g_object_unref (pixbuf);
 125
 126     gtk_file_chooser_set_preview_widget_active(chooser, have_preview);
 127 #else
 128     wxUnusedVar(chooser);
 129     wxUnusedVar(user_data);
 130 #endif // GTK+ 2.4+
 131 }
 132
 133 } // extern "C"
 134
 135
 136 //-----------------------------------------------------------------------------
 137 // wxFileDialog
 138 //-----------------------------------------------------------------------------
 139
 140 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxGenericFileDialog)
 141
 142 BEGIN_EVENT_TABLE(wxFileDialog,wxGenericFileDialog)
 143     EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
 144 END_EVENT_TABLE()
 145
 146 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 147                            const wxString& defaultDir,
 148                            const wxString& defaultFileName,
 149                            const wxString& wildCard,
 150                            long style, const wxPoint& pos,
 151                            const wxSize& sz,
 152                            const wxString& name)
 153     : wxGenericFileDialog(parent, message, defaultDir, defaultFileName,
 154                           wildCard, style, pos, sz, name, true )
 155 {
 156     if (gtk_check_version(2,4,0))
 157     {
 158         wxGenericFileDialog::Create( parent, message, defaultDir,
 159                                      defaultFileName, wildCard, style, pos );
 160         return;
 161     }
 162
 163     m_needParent = false;
 164
 165     if (!PreCreation(parent, pos, wxDefaultSize) ||
 166         !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
 167                 wxDefaultValidator, wxT("filedialog")))
 168     {
 169         wxFAIL_MSG( wxT("wxFileDialog creation failed") );
 170         return;
 171     }
 172
 173     GtkFileChooserAction gtk_action;
 174     GtkWindow* gtk_parent = NULL;
 175     if (parent)
 176         gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
 177
 178     const gchar* ok_btn_stock;
 179     if ( style & wxFD_SAVE )
 180     {
 181         gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
 182         ok_btn_stock = GTK_STOCK_SAVE;
 183     }
 184     else
 185     {
 186         gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
 187         ok_btn_stock = GTK_STOCK_OPEN;
 188     }
 189
 190     m_widget = gtk_file_chooser_dialog_new(
 191                    wxGTK_CONV(m_message),
 192                    gtk_parent,
 193                    gtk_action,
 194                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 195                    ok_btn_stock, GTK_RESPONSE_ACCEPT,
 196                    NULL);
 197
 198     gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
 199
 200     if ( style & wxFD_MULTIPLE )
 201         gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(m_widget), true);
 202
 203     // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically destroys
 204     // the dialog when the user press ESC on the dialog: in that case a second call to
 205     // ShowModal() would result in a bunch of Gtk-CRITICAL errors...
 206     g_signal_connect (G_OBJECT(m_widget),
 207                     "delete_event",
 208                     G_CALLBACK (gtk_widget_hide_on_delete),
 209                     (gpointer)this);
 210
 211     // local-only property could be set to false to allow non-local files to be loaded.
 212     // In that case get/set_uri(s) should be used instead of get/set_filename(s) everywhere
 213     // and the GtkFileChooserDialog should probably also be created with a backend,
 214     // e.g "gnome-vfs", "default", ... (gtk_file_chooser_dialog_new_with_backend).
 215     // Currently local-only is kept as the default - true:
 216     // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
 217
 218     g_signal_connect (m_widget, "response",
 219         G_CALLBACK (gtk_filedialog_response_callback), this);
 220
 221     SetWildcard(wildCard);
 222
 223     if ( style & wxFD_SAVE )
 224     {
 225         if ( !defaultDir.empty() )
 226             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 227             wxConvFileName->cWX2MB(defaultDir));
 228
 229         gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 230             wxGTK_CONV(defaultFileName));
 231
 232 #if GTK_CHECK_VERSION(2,7,3)
 233         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 234             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 235 #endif
 236     }
 237     else // wxFD_OPEN
 238     {
 239         if ( !defaultFileName.empty() )
 240         {
 241             wxString dir;
 242             if ( defaultDir.empty() )
 243                 dir = ::wxGetCwd();
 244             else
 245                 dir = defaultDir;
 246
 247             gtk_file_chooser_set_filename(
 248                 GTK_FILE_CHOOSER(m_widget),
 249                 wxConvFileName->cWX2MB( wxFileName(dir, defaultFileName).GetFullPath() ) );
 250         }
 251         else if ( !defaultDir.empty() )
 252         {
 253             gtk_file_chooser_set_current_folder( GTK_FILE_CHOOSER(m_widget),
 254                 wxConvFileName->cWX2MB(defaultDir) );
 255         }
 256     }
 257
 258 #if GTK_CHECK_VERSION(2,4,0)
 259     if ( style & wxFD_PREVIEW )
 260     {
 261         GtkWidget *previewImage = gtk_image_new();
 262
 263         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 264                                             previewImage);
 265         g_signal_connect(m_widget, "update-preview",
 266                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 267                          previewImage);
 268     }
 269 #endif // GTK+ 2.4+
 270 }
 271
 272 void wxFileDialog::OnFakeOk( wxCommandEvent &event )
 273 {
 274     if (!gtk_check_version(2,4,0))
 275         EndDialog(wxID_OK);
 276     else
 277         wxGenericFileDialog::OnListOk( event );
 278 }
 279
 280 int wxFileDialog::ShowModal()
 281 {
 282     if (!gtk_check_version(2,4,0))
 283         return wxDialog::ShowModal();
 284     else
 285         return wxGenericFileDialog::ShowModal();
 286 }
 287
 288 bool wxFileDialog::Show( bool show )
 289 {
 290     if (!gtk_check_version(2,4,0))
 291         return wxDialog::Show( show );
 292     else
 293         return wxGenericFileDialog::Show( show );
 294 }
 295
 296 void wxFileDialog::DoSetSize(int x, int y, int width, int height, int sizeFlags )
 297 {
 298     if (!m_wxwindow)
 299         return;
 300     else
 301         wxGenericFileDialog::DoSetSize( x, y, width, height, sizeFlags );
 302 }
 303
 304 wxString wxFileDialog::GetPath() const
 305 {
 306     if (!gtk_check_version(2,4,0))
 307     {
 308         wxGtkString str(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(m_widget)));
 309         return wxConvFileName->cMB2WX(str);
 310     }
 311
 312     return wxGenericFileDialog::GetPath();
 313 }
 314
 315 void wxFileDialog::GetFilenames(wxArrayString& files) const
 316 {
 317     if (!gtk_check_version(2,4,0))
 318     {
 319         GetPaths(files);
 320         for (size_t n = 0; n < files.GetCount(); ++n )
 321         {
 322             wxFileName file(files[n]);
 323             files[n] = file.GetFullName();
 324         }
 325     }
 326     else
 327         wxGenericFileDialog::GetFilenames( files );
 328 }
 329
 330 void wxFileDialog::GetPaths(wxArrayString& paths) const
 331 {
 332     if (!gtk_check_version(2,4,0))
 333     {
 334         paths.Empty();
 335         if (gtk_file_chooser_get_select_multiple(GTK_FILE_CHOOSER(m_widget)))
 336         {
 337             GSList *gpathsi = gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(m_widget));
 338             GSList *gpaths = gpathsi;
 339             while (gpathsi)
 340             {
 341                 wxString file(wxConvFileName->cMB2WX((gchar*) gpathsi->data));
 342                 paths.Add(file);
 343                 g_free(gpathsi->data);
 344                 gpathsi = gpathsi->next;
 345             }
 346
 347             g_slist_free(gpaths);
 348         }
 349         else
 350             paths.Add(GetPath());
 351     }
 352     else
 353         wxGenericFileDialog::GetPaths( paths );
 354 }
 355
 356 void wxFileDialog::SetMessage(const wxString& message)
 357 {
 358     if (!gtk_check_version(2,4,0))
 359     {
 360         m_message = message;
 361         SetTitle(message);
 362     }
 363     else
 364         wxGenericFileDialog::SetMessage( message );
 365 }
 366
 367 void wxFileDialog::SetPath(const wxString& path)
 368 {
 369     if (!gtk_check_version(2,4,0))
 370     {
 371         if (path.empty()) return;
 372
 373         gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(path));
 374     }
 375     else
 376         wxGenericFileDialog::SetPath( path );
 377 }
 378
 379 void wxFileDialog::SetDirectory(const wxString& dir)
 380 {
 381     if (!gtk_check_version(2,4,0))
 382     {
 383         if (wxDirExists(dir))
 384         {
 385             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(dir));
 386         }
 387     }
 388     else
 389         wxGenericFileDialog::SetDirectory( dir );
 390 }
 391
 392 wxString wxFileDialog::GetDirectory() const
 393 {
 394     if (!gtk_check_version(2,4,0))
 395     {
 396         wxGtkString str(gtk_file_chooser_get_current_folder(GTK_FILE_CHOOSER(m_widget)));
 397         return wxConvFileName->cMB2WX(str);
 398     }
 399
 400     return wxGenericFileDialog::GetDirectory();
 401 }
 402
 403 void wxFileDialog::SetFilename(const wxString& name)
 404 {
 405     if (!gtk_check_version(2,4,0))
 406     {
 407         if (HasFlag(wxFD_SAVE))
 408             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 409         else
 410             SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 411     }
 412     else
 413         wxGenericFileDialog::SetFilename( name );
 414 }
 415
 416 wxString wxFileDialog::GetFilename() const
 417 {
 418     if (!gtk_check_version(2,4,0))
 419         return wxFileName(GetPath()).GetFullName();
 420     else
 421         return wxGenericFileDialog::GetFilename();
 422 }
 423
 424 void wxFileDialog::SetWildcard(const wxString& wildCard)
 425 {
 426     if (!gtk_check_version(2,4,0))
 427     {
 428         // parse filters
 429         wxArrayString wildDescriptions, wildFilters;
 430         if (!wxParseCommonDialogsFilter(wildCard, wildDescriptions, wildFilters))
 431         {
 432             wxFAIL_MSG( wxT("wxFileDialog::SetWildCard - bad wildcard string") );
 433         }
 434         else
 435         {
 436             // Parsing went fine. Set m_wildCard to be returned by wxFileDialogBase::GetWildcard
 437             m_wildCard = wildCard;
 438
 439             GtkFileChooser* chooser = GTK_FILE_CHOOSER(m_widget);
 440
 441             // empty current filter list:
 442             GSList* ifilters = gtk_file_chooser_list_filters(chooser);
 443             GSList* filters = ifilters;
 444
 445             while (ifilters)
 446             {
 447                 gtk_file_chooser_remove_filter(chooser,GTK_FILE_FILTER(ifilters->data));
 448                 ifilters = ifilters->next;
 449             }
 450             g_slist_free(filters);
 451
 452             // add parsed to GtkChooser
 453             for (size_t n = 0; n < wildFilters.GetCount(); ++n)
 454             {
 455                 GtkFileFilter* filter = gtk_file_filter_new();
 456                 gtk_file_filter_set_name(filter, wxGTK_CONV(wildDescriptions[n]));
 457
 458                 wxStringTokenizer exttok(wildFilters[n], wxT(";"));
 459                 while (exttok.HasMoreTokens())
 460                 {
 461                     wxString token = exttok.GetNextToken();
 462                     gtk_file_filter_add_pattern(filter, wxGTK_CONV(token));
 463                 }
 464
 465                 gtk_file_chooser_add_filter(chooser, filter);
 466             }
 467
 468             // Reset the filter index
 469             SetFilterIndex(0);
 470         }
 471     }
 472     else
 473         wxGenericFileDialog::SetWildcard( wildCard );
 474 }
 475
 476 void wxFileDialog::SetFilterIndex(int filterIndex)
 477 {
 478
 479     if (!gtk_check_version(2,4,0))
 480     {
 481         gpointer filter;
 482         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 483         GSList *filters = gtk_file_chooser_list_filters(chooser);
 484
 485         filter = g_slist_nth_data(filters, filterIndex);
 486
 487         if (filter != NULL)
 488         {
 489             gtk_file_chooser_set_filter(chooser, GTK_FILE_FILTER(filter));
 490         }
 491         else
 492         {
 493             wxFAIL_MSG( wxT("wxFileDialog::SetFilterIndex - bad filter index") );
 494         }
 495
 496         g_slist_free(filters);
 497     }
 498     else
 499         wxGenericFileDialog::SetFilterIndex( filterIndex );
 500 }
 501
 502 int wxFileDialog::GetFilterIndex() const
 503 {
 504     if (!gtk_check_version(2,4,0))
 505     {
 506         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 507         GtkFileFilter *filter = gtk_file_chooser_get_filter(chooser);
 508         GSList *filters = gtk_file_chooser_list_filters(chooser);
 509         gint index = g_slist_index(filters, filter);
 510         g_slist_free(filters);
 511
 512         if (index == -1)
 513         {
 514             wxFAIL_MSG( wxT("wxFileDialog::GetFilterIndex - bad filter index returned by gtk+") );
 515             return 0;
 516         }
 517         else
 518             return index;
 519     }
 520     else
 521                 return wxGenericFileDialog::GetFilterIndex();
 522 }
 523
 524 #endif // wxUSE_FILEDLG &&  __WXGTK24__