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
 204     // destroys the dialog when the user press ESC on the dialog: in that case
 205     // a second call to ShowModal() would result in a bunch of Gtk-CRITICAL
 206     // errors...
 207     g_signal_connect (G_OBJECT(m_widget),
 208                     "delete_event",
 209                     G_CALLBACK (gtk_widget_hide_on_delete),
 210                     (gpointer)this);
 211
 212     // local-only property could be set to false to allow non-local files to be
 213     // loaded. In that case get/set_uri(s) should be used instead of
 214     // get/set_filename(s) everywhere and the GtkFileChooserDialog should
 215     // probably also be created with a backend, e.g "gnome-vfs", "default", ...
 216     // (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
 217     // as the default - true:
 218     // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
 219
 220     g_signal_connect (m_widget, "response",
 221         G_CALLBACK (gtk_filedialog_response_callback), this);
 222
 223     SetWildcard(wildCard);
 224
 225     // if defaultDir is specified it should contain the directory and
 226     // defaultFileName should contain the default name of the file, however if
 227     // directory is not given, defaultFileName contains both
 228     wxFileName fn;
 229     if ( defaultDir.empty() )
 230         fn.Assign(defaultFileName);
 231     else if ( !defaultFileName.empty() )
 232         fn.Assign(defaultDir, defaultFileName);
 233
 234     // set the initial file name and/or directory
 235     wxString fname = fn.GetFullName();
 236     if ( fname.empty() )
 237     {
 238         wxString dir = fn.GetPath();
 239         if ( !dir.empty() )
 240         {
 241             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 242                                                 dir.fn_str());
 243         }
 244     }
 245
 246     if ( style & wxFD_SAVE )
 247     {
 248         if ( !fname.empty() )
 249         {
 250             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 251                                               fname.fn_str());
 252         }
 253
 254 #if GTK_CHECK_VERSION(2,7,3)
 255         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 256             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 257 #endif
 258     }
 259     else // wxFD_OPEN
 260     {
 261         if ( !fname.empty() )
 262         {
 263             gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget),
 264                                           fn.GetFullPath().fn_str());
 265         }
 266     }
 267
 268 #if GTK_CHECK_VERSION(2,4,0)
 269     if ( style & wxFD_PREVIEW )
 270     {
 271         GtkWidget *previewImage = gtk_image_new();
 272
 273         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 274                                             previewImage);
 275         g_signal_connect(m_widget, "update-preview",
 276                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 277                          previewImage);
 278     }
 279 #endif // GTK+ 2.4+
 280 }
 281
 282 void wxFileDialog::OnFakeOk( wxCommandEvent &event )
 283 {
 284     if (!gtk_check_version(2,4,0))
 285         EndDialog(wxID_OK);
 286     else
 287         wxGenericFileDialog::OnListOk( event );
 288 }
 289
 290 int wxFileDialog::ShowModal()
 291 {
 292     if (!gtk_check_version(2,4,0))
 293         return wxDialog::ShowModal();
 294     else
 295         return wxGenericFileDialog::ShowModal();
 296 }
 297
 298 bool wxFileDialog::Show( bool show )
 299 {
 300     if (!gtk_check_version(2,4,0))
 301         return wxDialog::Show( show );
 302     else
 303         return wxGenericFileDialog::Show( show );
 304 }
 305
 306 void wxFileDialog::DoSetSize(int x, int y, int width, int height, int sizeFlags )
 307 {
 308     if (!m_wxwindow)
 309         return;
 310     else
 311         wxGenericFileDialog::DoSetSize( x, y, width, height, sizeFlags );
 312 }
 313
 314 wxString wxFileDialog::GetPath() const
 315 {
 316     if (!gtk_check_version(2,4,0))
 317     {
 318         wxGtkString str(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(m_widget)));
 319         return wxConvFileName->cMB2WX(str);
 320     }
 321
 322     return wxGenericFileDialog::GetPath();
 323 }
 324
 325 void wxFileDialog::GetFilenames(wxArrayString& files) const
 326 {
 327     if (!gtk_check_version(2,4,0))
 328     {
 329         GetPaths(files);
 330         for (size_t n = 0; n < files.GetCount(); ++n )
 331         {
 332             wxFileName file(files[n]);
 333             files[n] = file.GetFullName();
 334         }
 335     }
 336     else
 337         wxGenericFileDialog::GetFilenames( files );
 338 }
 339
 340 void wxFileDialog::GetPaths(wxArrayString& paths) const
 341 {
 342     if (!gtk_check_version(2,4,0))
 343     {
 344         paths.Empty();
 345         if (gtk_file_chooser_get_select_multiple(GTK_FILE_CHOOSER(m_widget)))
 346         {
 347             GSList *gpathsi = gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(m_widget));
 348             GSList *gpaths = gpathsi;
 349             while (gpathsi)
 350             {
 351                 wxString file(wxConvFileName->cMB2WX((gchar*) gpathsi->data));
 352                 paths.Add(file);
 353                 g_free(gpathsi->data);
 354                 gpathsi = gpathsi->next;
 355             }
 356
 357             g_slist_free(gpaths);
 358         }
 359         else
 360             paths.Add(GetPath());
 361     }
 362     else
 363         wxGenericFileDialog::GetPaths( paths );
 364 }
 365
 366 void wxFileDialog::SetMessage(const wxString& message)
 367 {
 368     if (!gtk_check_version(2,4,0))
 369     {
 370         m_message = message;
 371         SetTitle(message);
 372     }
 373     else
 374         wxGenericFileDialog::SetMessage( message );
 375 }
 376
 377 void wxFileDialog::SetPath(const wxString& path)
 378 {
 379     if (!gtk_check_version(2,4,0))
 380     {
 381         if (path.empty()) return;
 382
 383         gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(path));
 384     }
 385     else
 386         wxGenericFileDialog::SetPath( path );
 387 }
 388
 389 void wxFileDialog::SetDirectory(const wxString& dir)
 390 {
 391     if (!gtk_check_version(2,4,0))
 392     {
 393         if (wxDirExists(dir))
 394         {
 395             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(dir));
 396         }
 397     }
 398     else
 399         wxGenericFileDialog::SetDirectory( dir );
 400 }
 401
 402 wxString wxFileDialog::GetDirectory() const
 403 {
 404     if (!gtk_check_version(2,4,0))
 405     {
 406         wxGtkString str(gtk_file_chooser_get_current_folder(GTK_FILE_CHOOSER(m_widget)));
 407         return wxConvFileName->cMB2WX(str);
 408     }
 409
 410     return wxGenericFileDialog::GetDirectory();
 411 }
 412
 413 void wxFileDialog::SetFilename(const wxString& name)
 414 {
 415     if (!gtk_check_version(2,4,0))
 416     {
 417         if (HasFdFlag(wxFD_SAVE))
 418             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 419         else
 420             SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 421     }
 422     else
 423         wxGenericFileDialog::SetFilename( name );
 424 }
 425
 426 wxString wxFileDialog::GetFilename() const
 427 {
 428     if (!gtk_check_version(2,4,0))
 429         return wxFileName(GetPath()).GetFullName();
 430     else
 431         return wxGenericFileDialog::GetFilename();
 432 }
 433
 434 void wxFileDialog::SetWildcard(const wxString& wildCard)
 435 {
 436     if (!gtk_check_version(2,4,0))
 437     {
 438         // parse filters
 439         wxArrayString wildDescriptions, wildFilters;
 440         if (!wxParseCommonDialogsFilter(wildCard, wildDescriptions, wildFilters))
 441         {
 442             wxFAIL_MSG( wxT("wxFileDialog::SetWildCard - bad wildcard string") );
 443         }
 444         else
 445         {
 446             // Parsing went fine. Set m_wildCard to be returned by wxFileDialogBase::GetWildcard
 447             m_wildCard = wildCard;
 448
 449             GtkFileChooser* chooser = GTK_FILE_CHOOSER(m_widget);
 450
 451             // empty current filter list:
 452             GSList* ifilters = gtk_file_chooser_list_filters(chooser);
 453             GSList* filters = ifilters;
 454
 455             while (ifilters)
 456             {
 457                 gtk_file_chooser_remove_filter(chooser,GTK_FILE_FILTER(ifilters->data));
 458                 ifilters = ifilters->next;
 459             }
 460             g_slist_free(filters);
 461
 462             // add parsed to GtkChooser
 463             for (size_t n = 0; n < wildFilters.GetCount(); ++n)
 464             {
 465                 GtkFileFilter* filter = gtk_file_filter_new();
 466                 gtk_file_filter_set_name(filter, wxGTK_CONV(wildDescriptions[n]));
 467
 468                 wxStringTokenizer exttok(wildFilters[n], wxT(";"));
 469                 while (exttok.HasMoreTokens())
 470                 {
 471                     wxString token = exttok.GetNextToken();
 472                     gtk_file_filter_add_pattern(filter, wxGTK_CONV(token));
 473                 }
 474
 475                 gtk_file_chooser_add_filter(chooser, filter);
 476             }
 477
 478             // Reset the filter index
 479             SetFilterIndex(0);
 480         }
 481     }
 482     else
 483         wxGenericFileDialog::SetWildcard( wildCard );
 484 }
 485
 486 void wxFileDialog::SetFilterIndex(int filterIndex)
 487 {
 488
 489     if (!gtk_check_version(2,4,0))
 490     {
 491         gpointer filter;
 492         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 493         GSList *filters = gtk_file_chooser_list_filters(chooser);
 494
 495         filter = g_slist_nth_data(filters, filterIndex);
 496
 497         if (filter != NULL)
 498         {
 499             gtk_file_chooser_set_filter(chooser, GTK_FILE_FILTER(filter));
 500         }
 501         else
 502         {
 503             wxFAIL_MSG( wxT("wxFileDialog::SetFilterIndex - bad filter index") );
 504         }
 505
 506         g_slist_free(filters);
 507     }
 508     else
 509         wxGenericFileDialog::SetFilterIndex( filterIndex );
 510 }
 511
 512 int wxFileDialog::GetFilterIndex() const
 513 {
 514     if (!gtk_check_version(2,4,0))
 515     {
 516         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 517         GtkFileFilter *filter = gtk_file_chooser_get_filter(chooser);
 518         GSList *filters = gtk_file_chooser_list_filters(chooser);
 519         gint index = g_slist_index(filters, filter);
 520         g_slist_free(filters);
 521
 522         if (index == -1)
 523         {
 524             wxFAIL_MSG( wxT("wxFileDialog::GetFilterIndex - bad filter index returned by gtk+") );
 525             return 0;
 526         }
 527         else
 528             return index;
 529     }
 530     else
 531                 return wxGenericFileDialog::GetFilterIndex();
 532 }
 533
 534 #endif // wxUSE_FILEDLG &&  __WXGTK24__