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     else
 234         fn.AssignDir(defaultDir);
 235
 236     // set the initial file name and/or directory
 237     const wxString dir = fn.GetPath();
 238     if ( !dir.empty() )
 239     {
 240         gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 241                                             dir.fn_str());
 242     }
 243
 244     const wxString fname = fn.GetFullName();
 245     if ( style & wxFD_SAVE )
 246     {
 247         if ( !fname.empty() )
 248         {
 249             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 250                                               fname.fn_str());
 251         }
 252
 253 #if GTK_CHECK_VERSION(2,7,3)
 254         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 255             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 256 #endif
 257     }
 258     else // wxFD_OPEN
 259     {
 260         if ( !fname.empty() )
 261         {
 262             gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget),
 263                                           fn.GetFullPath().fn_str());
 264         }
 265     }
 266
 267 #if GTK_CHECK_VERSION(2,4,0)
 268     if ( style & wxFD_PREVIEW )
 269     {
 270         GtkWidget *previewImage = gtk_image_new();
 271
 272         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 273                                             previewImage);
 274         g_signal_connect(m_widget, "update-preview",
 275                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 276                          previewImage);
 277     }
 278 #endif // GTK+ 2.4+
 279 }
 280
 281 void wxFileDialog::OnFakeOk( wxCommandEvent &event )
 282 {
 283     if (!gtk_check_version(2,4,0))
 284         EndDialog(wxID_OK);
 285     else
 286         wxGenericFileDialog::OnListOk( event );
 287 }
 288
 289 int wxFileDialog::ShowModal()
 290 {
 291     if (!gtk_check_version(2,4,0))
 292         return wxDialog::ShowModal();
 293     else
 294         return wxGenericFileDialog::ShowModal();
 295 }
 296
 297 bool wxFileDialog::Show( bool show )
 298 {
 299     if (!gtk_check_version(2,4,0))
 300         return wxDialog::Show( show );
 301     else
 302         return wxGenericFileDialog::Show( show );
 303 }
 304
 305 void wxFileDialog::DoSetSize(int x, int y, int width, int height, int sizeFlags )
 306 {
 307     if (!m_wxwindow)
 308         return;
 309     else
 310         wxGenericFileDialog::DoSetSize( x, y, width, height, sizeFlags );
 311 }
 312
 313 wxString wxFileDialog::GetPath() const
 314 {
 315     if (!gtk_check_version(2,4,0))
 316     {
 317         wxGtkString str(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(m_widget)));
 318         return wxConvFileName->cMB2WX(str);
 319     }
 320
 321     return wxGenericFileDialog::GetPath();
 322 }
 323
 324 void wxFileDialog::GetFilenames(wxArrayString& files) const
 325 {
 326     if (!gtk_check_version(2,4,0))
 327     {
 328         GetPaths(files);
 329         for (size_t n = 0; n < files.GetCount(); ++n )
 330         {
 331             wxFileName file(files[n]);
 332             files[n] = file.GetFullName();
 333         }
 334     }
 335     else
 336         wxGenericFileDialog::GetFilenames( files );
 337 }
 338
 339 void wxFileDialog::GetPaths(wxArrayString& paths) const
 340 {
 341     if (!gtk_check_version(2,4,0))
 342     {
 343         paths.Empty();
 344         if (gtk_file_chooser_get_select_multiple(GTK_FILE_CHOOSER(m_widget)))
 345         {
 346             GSList *gpathsi = gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(m_widget));
 347             GSList *gpaths = gpathsi;
 348             while (gpathsi)
 349             {
 350                 wxString file(wxConvFileName->cMB2WX((gchar*) gpathsi->data));
 351                 paths.Add(file);
 352                 g_free(gpathsi->data);
 353                 gpathsi = gpathsi->next;
 354             }
 355
 356             g_slist_free(gpaths);
 357         }
 358         else
 359             paths.Add(GetPath());
 360     }
 361     else
 362         wxGenericFileDialog::GetPaths( paths );
 363 }
 364
 365 void wxFileDialog::SetMessage(const wxString& message)
 366 {
 367     if (!gtk_check_version(2,4,0))
 368     {
 369         m_message = message;
 370         SetTitle(message);
 371     }
 372     else
 373         wxGenericFileDialog::SetMessage( message );
 374 }
 375
 376 void wxFileDialog::SetPath(const wxString& path)
 377 {
 378     if (!gtk_check_version(2,4,0))
 379     {
 380         if (path.empty()) return;
 381
 382         gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(path));
 383     }
 384     else
 385         wxGenericFileDialog::SetPath( path );
 386 }
 387
 388 void wxFileDialog::SetDirectory(const wxString& dir)
 389 {
 390     if (!gtk_check_version(2,4,0))
 391     {
 392         if (wxDirExists(dir))
 393         {
 394             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(dir));
 395         }
 396     }
 397     else
 398         wxGenericFileDialog::SetDirectory( dir );
 399 }
 400
 401 wxString wxFileDialog::GetDirectory() const
 402 {
 403     if (!gtk_check_version(2,4,0))
 404     {
 405         wxGtkString str(gtk_file_chooser_get_current_folder(GTK_FILE_CHOOSER(m_widget)));
 406         return wxConvFileName->cMB2WX(str);
 407     }
 408
 409     return wxGenericFileDialog::GetDirectory();
 410 }
 411
 412 void wxFileDialog::SetFilename(const wxString& name)
 413 {
 414     if (!gtk_check_version(2,4,0))
 415     {
 416         if (HasFdFlag(wxFD_SAVE))
 417             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 418         else
 419             SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 420     }
 421     else
 422         wxGenericFileDialog::SetFilename( name );
 423 }
 424
 425 wxString wxFileDialog::GetFilename() const
 426 {
 427     if (!gtk_check_version(2,4,0))
 428         return wxFileName(GetPath()).GetFullName();
 429     else
 430         return wxGenericFileDialog::GetFilename();
 431 }
 432
 433 void wxFileDialog::SetWildcard(const wxString& wildCard)
 434 {
 435     if (!gtk_check_version(2,4,0))
 436     {
 437         // parse filters
 438         wxArrayString wildDescriptions, wildFilters;
 439         if (!wxParseCommonDialogsFilter(wildCard, wildDescriptions, wildFilters))
 440         {
 441             wxFAIL_MSG( wxT("wxFileDialog::SetWildCard - bad wildcard string") );
 442         }
 443         else
 444         {
 445             // Parsing went fine. Set m_wildCard to be returned by wxFileDialogBase::GetWildcard
 446             m_wildCard = wildCard;
 447
 448             GtkFileChooser* chooser = GTK_FILE_CHOOSER(m_widget);
 449
 450             // empty current filter list:
 451             GSList* ifilters = gtk_file_chooser_list_filters(chooser);
 452             GSList* filters = ifilters;
 453
 454             while (ifilters)
 455             {
 456                 gtk_file_chooser_remove_filter(chooser,GTK_FILE_FILTER(ifilters->data));
 457                 ifilters = ifilters->next;
 458             }
 459             g_slist_free(filters);
 460
 461             // add parsed to GtkChooser
 462             for (size_t n = 0; n < wildFilters.GetCount(); ++n)
 463             {
 464                 GtkFileFilter* filter = gtk_file_filter_new();
 465                 gtk_file_filter_set_name(filter, wxGTK_CONV(wildDescriptions[n]));
 466
 467                 wxStringTokenizer exttok(wildFilters[n], wxT(";"));
 468                 while (exttok.HasMoreTokens())
 469                 {
 470                     wxString token = exttok.GetNextToken();
 471                     gtk_file_filter_add_pattern(filter, wxGTK_CONV(token));
 472                 }
 473
 474                 gtk_file_chooser_add_filter(chooser, filter);
 475             }
 476
 477             // Reset the filter index
 478             SetFilterIndex(0);
 479         }
 480     }
 481     else
 482         wxGenericFileDialog::SetWildcard( wildCard );
 483 }
 484
 485 void wxFileDialog::SetFilterIndex(int filterIndex)
 486 {
 487
 488     if (!gtk_check_version(2,4,0))
 489     {
 490         gpointer filter;
 491         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 492         GSList *filters = gtk_file_chooser_list_filters(chooser);
 493
 494         filter = g_slist_nth_data(filters, filterIndex);
 495
 496         if (filter != NULL)
 497         {
 498             gtk_file_chooser_set_filter(chooser, GTK_FILE_FILTER(filter));
 499         }
 500         else
 501         {
 502             wxFAIL_MSG( wxT("wxFileDialog::SetFilterIndex - bad filter index") );
 503         }
 504
 505         g_slist_free(filters);
 506     }
 507     else
 508         wxGenericFileDialog::SetFilterIndex( filterIndex );
 509 }
 510
 511 int wxFileDialog::GetFilterIndex() const
 512 {
 513     if (!gtk_check_version(2,4,0))
 514     {
 515         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 516         GtkFileFilter *filter = gtk_file_chooser_get_filter(chooser);
 517         GSList *filters = gtk_file_chooser_list_filters(chooser);
 518         gint index = g_slist_index(filters, filter);
 519         g_slist_free(filters);
 520
 521         if (index == -1)
 522         {
 523             wxFAIL_MSG( wxT("wxFileDialog::GetFilterIndex - bad filter index returned by gtk+") );
 524             return 0;
 525         }
 526         else
 527             return index;
 528     }
 529     else
 530                 return wxGenericFileDialog::GetFilterIndex();
 531 }
 532
 533 #endif // wxUSE_FILEDLG &&  __WXGTK24__