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 // "clicked" for OK-button
  33 //-----------------------------------------------------------------------------
  34
  35 extern "C" {
  36 static void gtk_filedialog_ok_callback(GtkWidget *widget, wxFileDialog *dialog)
  37 {
  38     int style = dialog->GetWindowStyle();
  39     wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));
  40
  41     // gtk version numbers must be identical with the one in ctor (that calls set_do_overwrite_confirmation)
  42 #if GTK_CHECK_VERSION(2,7,3)
  43     if(gtk_check_version(2,7,3) != NULL)
  44 #endif
  45     if ((style & wxFD_SAVE) && (style & wxFD_OVERWRITE_PROMPT))
  46     {
  47         if ( g_file_test(filename, G_FILE_TEST_EXISTS) )
  48         {
  49             wxString msg;
  50
  51             msg.Printf(
  52                 _("File '%s' already exists, do you really want to overwrite it?"),
  53                 wxString(filename, *wxConvFileName));
  54
  55             wxMessageDialog dlg(dialog, msg, _("Confirm"),
  56                                wxYES_NO | wxICON_QUESTION);
  57             if (dlg.ShowModal() != wxID_YES)
  58                 return;
  59         }
  60     }
  61
  62     if (style & wxFD_FILE_MUST_EXIST)
  63     {
  64         if ( !g_file_test(filename, G_FILE_TEST_EXISTS) )
  65         {
  66             wxMessageDialog dlg( dialog, _("Please choose an existing file."),
  67                                  _("Error"), wxOK| wxICON_ERROR);
  68             dlg.ShowModal();
  69             return;
  70         }
  71     }
  72
  73     // change to the directory where the user went if asked
  74     if (style & wxFD_CHANGE_DIR)
  75     {
  76         // Use chdir to not care about filename encodings
  77         wxGtkString folder(g_path_get_dirname(filename));
  78         chdir(folder);
  79     }
  80
  81     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_OK);
  82     event.SetEventObject(dialog);
  83     dialog->GetEventHandler()->ProcessEvent(event);
  84 }
  85 }
  86
  87 //-----------------------------------------------------------------------------
  88 // "clicked" for Cancel-button
  89 //-----------------------------------------------------------------------------
  90
  91 extern "C"
  92 {
  93
  94 static void gtk_filedialog_cancel_callback(GtkWidget *w, wxFileDialog *dialog)
  95 {
  96     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
  97     event.SetEventObject(dialog);
  98     dialog->GetEventHandler()->ProcessEvent(event);
  99 }
 100
 101 static void gtk_filedialog_response_callback(GtkWidget *w,
 102                                              gint response,
 103                                              wxFileDialog *dialog)
 104 {
 105     if (response == GTK_RESPONSE_ACCEPT)
 106         gtk_filedialog_ok_callback(w, dialog);
 107     else    // GTK_RESPONSE_CANCEL or GTK_RESPONSE_NONE
 108         gtk_filedialog_cancel_callback(w, dialog);
 109 }
 110
 111 static void gtk_filedialog_update_preview_callback(GtkFileChooser *chooser,
 112                                                    gpointer user_data)
 113 {
 114 #if GTK_CHECK_VERSION(2,4,0)
 115     GtkWidget *preview = GTK_WIDGET(user_data);
 116
 117     wxGtkString filename(gtk_file_chooser_get_preview_filename(chooser));
 118
 119     if ( !filename )
 120         return;
 121
 122     GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
 123     gboolean have_preview = pixbuf != NULL;
 124
 125     gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
 126     if ( pixbuf )
 127         g_object_unref (pixbuf);
 128
 129     gtk_file_chooser_set_preview_widget_active(chooser, have_preview);
 130 #else
 131     wxUnusedVar(chooser);
 132     wxUnusedVar(user_data);
 133 #endif // GTK+ 2.4+
 134 }
 135
 136 } // extern "C"
 137
 138
 139 //-----------------------------------------------------------------------------
 140 // wxFileDialog
 141 //-----------------------------------------------------------------------------
 142
 143 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxGenericFileDialog)
 144
 145 BEGIN_EVENT_TABLE(wxFileDialog,wxGenericFileDialog)
 146     EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
 147 END_EVENT_TABLE()
 148
 149 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 150                            const wxString& defaultDir,
 151                            const wxString& defaultFileName,
 152                            const wxString& wildCard,
 153                            long style, const wxPoint& pos,
 154                            const wxSize& sz,
 155                            const wxString& name)
 156     : wxGenericFileDialog(parent, message, defaultDir, defaultFileName,
 157                           wildCard, style, pos, sz, name, true )
 158 {
 159     if (gtk_check_version(2,4,0))
 160     {
 161         wxGenericFileDialog::Create( parent, message, defaultDir,
 162                                      defaultFileName, wildCard, style, pos );
 163         return;
 164     }
 165
 166     parent = GetParentForModalDialog(parent);
 167
 168     if (!PreCreation(parent, pos, wxDefaultSize) ||
 169         !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
 170                 wxDefaultValidator, wxT("filedialog")))
 171     {
 172         wxFAIL_MSG( wxT("wxFileDialog creation failed") );
 173         return;
 174     }
 175
 176     GtkFileChooserAction gtk_action;
 177     GtkWindow* gtk_parent = NULL;
 178     if (parent)
 179         gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
 180
 181     const gchar* ok_btn_stock;
 182     if ( style & wxFD_SAVE )
 183     {
 184         gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
 185         ok_btn_stock = GTK_STOCK_SAVE;
 186     }
 187     else
 188     {
 189         gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
 190         ok_btn_stock = GTK_STOCK_OPEN;
 191     }
 192
 193     m_widget = gtk_file_chooser_dialog_new(
 194                    wxGTK_CONV(m_message),
 195                    gtk_parent,
 196                    gtk_action,
 197                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 198                    ok_btn_stock, GTK_RESPONSE_ACCEPT,
 199                    NULL);
 200
 201     gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
 202
 203     if ( style & wxFD_MULTIPLE )
 204         gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(m_widget), true);
 205
 206     // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically
 207     // destroys the dialog when the user press ESC on the dialog: in that case
 208     // a second call to ShowModal() would result in a bunch of Gtk-CRITICAL
 209     // errors...
 210     g_signal_connect (G_OBJECT(m_widget),
 211                     "delete_event",
 212                     G_CALLBACK (gtk_widget_hide_on_delete),
 213                     (gpointer)this);
 214
 215     // local-only property could be set to false to allow non-local files to be
 216     // loaded. In that case get/set_uri(s) should be used instead of
 217     // get/set_filename(s) everywhere and the GtkFileChooserDialog should
 218     // probably also be created with a backend, e.g "gnome-vfs", "default", ...
 219     // (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
 220     // as the default - true:
 221     // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
 222
 223     g_signal_connect (m_widget, "response",
 224         G_CALLBACK (gtk_filedialog_response_callback), this);
 225
 226     SetWildcard(wildCard);
 227
 228     // if defaultDir is specified it should contain the directory and
 229     // defaultFileName should contain the default name of the file, however if
 230     // directory is not given, defaultFileName contains both
 231     wxFileName fn;
 232     if ( defaultDir.empty() )
 233         fn.Assign(defaultFileName);
 234     else if ( !defaultFileName.empty() )
 235         fn.Assign(defaultDir, defaultFileName);
 236     else
 237         fn.AssignDir(defaultDir);
 238
 239     // set the initial file name and/or directory
 240     fn.MakeAbsolute(); // GTK+ needs absolute path
 241     const wxString dir = fn.GetPath();
 242     if ( !dir.empty() )
 243     {
 244         gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 245                                             dir.fn_str());
 246     }
 247
 248     const wxString fname = fn.GetFullName();
 249     if ( style & wxFD_SAVE )
 250     {
 251         if ( !fname.empty() )
 252         {
 253             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 254                                               fname.fn_str());
 255         }
 256
 257 #if GTK_CHECK_VERSION(2,7,3)
 258         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 259             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 260 #endif
 261     }
 262     else // wxFD_OPEN
 263     {
 264         if ( !fname.empty() )
 265         {
 266             gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget),
 267                                           fn.GetFullPath().fn_str());
 268         }
 269     }
 270
 271 #if GTK_CHECK_VERSION(2,4,0)
 272     if ( style & wxFD_PREVIEW )
 273     {
 274         GtkWidget *previewImage = gtk_image_new();
 275
 276         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 277                                             previewImage);
 278         g_signal_connect(m_widget, "update-preview",
 279                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 280                          previewImage);
 281     }
 282 #endif // GTK+ 2.4+
 283 }
 284
 285 void wxFileDialog::OnFakeOk( wxCommandEvent &event )
 286 {
 287     if (!gtk_check_version(2,4,0))
 288         EndDialog(wxID_OK);
 289     else
 290         wxGenericFileDialog::OnListOk( event );
 291 }
 292
 293 int wxFileDialog::ShowModal()
 294 {
 295     if (!gtk_check_version(2,4,0))
 296         return wxDialog::ShowModal();
 297     else
 298         return wxGenericFileDialog::ShowModal();
 299 }
 300
 301 bool wxFileDialog::Show( bool show )
 302 {
 303     if (!gtk_check_version(2,4,0))
 304         return wxDialog::Show( show );
 305     else
 306         return wxGenericFileDialog::Show( show );
 307 }
 308
 309 void wxFileDialog::DoSetSize(int x, int y, int width, int height, int sizeFlags )
 310 {
 311     if (!m_wxwindow)
 312         return;
 313     else
 314         wxGenericFileDialog::DoSetSize( x, y, width, height, sizeFlags );
 315 }
 316
 317 wxString wxFileDialog::GetPath() const
 318 {
 319     if (!gtk_check_version(2,4,0))
 320     {
 321         wxGtkString str(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(m_widget)));
 322         return wxString(str, *wxConvFileName);
 323     }
 324
 325     return wxGenericFileDialog::GetPath();
 326 }
 327
 328 void wxFileDialog::GetFilenames(wxArrayString& files) const
 329 {
 330     if (!gtk_check_version(2,4,0))
 331     {
 332         GetPaths(files);
 333         for (size_t n = 0; n < files.GetCount(); ++n )
 334         {
 335             wxFileName file(files[n]);
 336             files[n] = file.GetFullName();
 337         }
 338     }
 339     else
 340         wxGenericFileDialog::GetFilenames( files );
 341 }
 342
 343 void wxFileDialog::GetPaths(wxArrayString& paths) const
 344 {
 345     if (!gtk_check_version(2,4,0))
 346     {
 347         paths.Empty();
 348         if (gtk_file_chooser_get_select_multiple(GTK_FILE_CHOOSER(m_widget)))
 349         {
 350             GSList *gpathsi = gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(m_widget));
 351             GSList *gpaths = gpathsi;
 352             while (gpathsi)
 353             {
 354                 wxString file((gchar*) gpathsi->data, *wxConvFileName);
 355                 paths.Add(file);
 356                 g_free(gpathsi->data);
 357                 gpathsi = gpathsi->next;
 358             }
 359
 360             g_slist_free(gpaths);
 361         }
 362         else
 363             paths.Add(GetPath());
 364     }
 365     else
 366         wxGenericFileDialog::GetPaths( paths );
 367 }
 368
 369 void wxFileDialog::SetMessage(const wxString& message)
 370 {
 371     if (!gtk_check_version(2,4,0))
 372     {
 373         m_message = message;
 374         SetTitle(message);
 375     }
 376     else
 377         wxGenericFileDialog::SetMessage( message );
 378 }
 379
 380 void wxFileDialog::SetPath(const wxString& path)
 381 {
 382     if (!gtk_check_version(2,4,0))
 383     {
 384         if (path.empty()) return;
 385
 386         gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget), path.fn_str());
 387     }
 388     else
 389         wxGenericFileDialog::SetPath( path );
 390 }
 391
 392 void wxFileDialog::SetDirectory(const wxString& dir)
 393 {
 394     if (!gtk_check_version(2,4,0))
 395     {
 396         if (wxDirExists(dir))
 397         {
 398             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget), dir.fn_str());
 399         }
 400     }
 401     else
 402         wxGenericFileDialog::SetDirectory( dir );
 403 }
 404
 405 wxString wxFileDialog::GetDirectory() const
 406 {
 407     if (!gtk_check_version(2,4,0))
 408     {
 409         wxGtkString str(gtk_file_chooser_get_current_folder(GTK_FILE_CHOOSER(m_widget)));
 410         return wxString(str, *wxConvFileName);
 411     }
 412
 413     return wxGenericFileDialog::GetDirectory();
 414 }
 415
 416 void wxFileDialog::SetFilename(const wxString& name)
 417 {
 418     if (!gtk_check_version(2,4,0))
 419     {
 420         if (HasFdFlag(wxFD_SAVE))
 421             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 422         else
 423             SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 424     }
 425     else
 426         wxGenericFileDialog::SetFilename( name );
 427 }
 428
 429 wxString wxFileDialog::GetFilename() const
 430 {
 431     if (!gtk_check_version(2,4,0))
 432         return wxFileName(GetPath()).GetFullName();
 433     else
 434         return wxGenericFileDialog::GetFilename();
 435 }
 436
 437 void wxFileDialog::SetWildcard(const wxString& wildCard)
 438 {
 439     if (!gtk_check_version(2,4,0))
 440     {
 441         // parse filters
 442         wxArrayString wildDescriptions, wildFilters;
 443         if (!wxParseCommonDialogsFilter(wildCard, wildDescriptions, wildFilters))
 444         {
 445             wxFAIL_MSG( wxT("wxFileDialog::SetWildCard - bad wildcard string") );
 446         }
 447         else
 448         {
 449             // Parsing went fine. Set m_wildCard to be returned by wxFileDialogBase::GetWildcard
 450             m_wildCard = wildCard;
 451
 452             GtkFileChooser* chooser = GTK_FILE_CHOOSER(m_widget);
 453
 454             // empty current filter list:
 455             GSList* ifilters = gtk_file_chooser_list_filters(chooser);
 456             GSList* filters = ifilters;
 457
 458             while (ifilters)
 459             {
 460                 gtk_file_chooser_remove_filter(chooser,GTK_FILE_FILTER(ifilters->data));
 461                 ifilters = ifilters->next;
 462             }
 463             g_slist_free(filters);
 464
 465             // add parsed to GtkChooser
 466             for (size_t n = 0; n < wildFilters.GetCount(); ++n)
 467             {
 468                 GtkFileFilter* filter = gtk_file_filter_new();
 469                 gtk_file_filter_set_name(filter, wxGTK_CONV(wildDescriptions[n]));
 470
 471                 wxStringTokenizer exttok(wildFilters[n], wxT(";"));
 472                 while (exttok.HasMoreTokens())
 473                 {
 474                     wxString token = exttok.GetNextToken();
 475                     gtk_file_filter_add_pattern(filter, wxGTK_CONV(token));
 476                 }
 477
 478                 gtk_file_chooser_add_filter(chooser, filter);
 479             }
 480
 481             // Reset the filter index
 482             SetFilterIndex(0);
 483         }
 484     }
 485     else
 486         wxGenericFileDialog::SetWildcard( wildCard );
 487 }
 488
 489 void wxFileDialog::SetFilterIndex(int filterIndex)
 490 {
 491
 492     if (!gtk_check_version(2,4,0))
 493     {
 494         gpointer filter;
 495         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 496         GSList *filters = gtk_file_chooser_list_filters(chooser);
 497
 498         filter = g_slist_nth_data(filters, filterIndex);
 499
 500         if (filter != NULL)
 501         {
 502             gtk_file_chooser_set_filter(chooser, GTK_FILE_FILTER(filter));
 503         }
 504         else
 505         {
 506             wxFAIL_MSG( wxT("wxFileDialog::SetFilterIndex - bad filter index") );
 507         }
 508
 509         g_slist_free(filters);
 510     }
 511     else
 512         wxGenericFileDialog::SetFilterIndex( filterIndex );
 513 }
 514
 515 int wxFileDialog::GetFilterIndex() const
 516 {
 517     if (!gtk_check_version(2,4,0))
 518     {
 519         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 520         GtkFileFilter *filter = gtk_file_chooser_get_filter(chooser);
 521         GSList *filters = gtk_file_chooser_list_filters(chooser);
 522         gint index = g_slist_index(filters, filter);
 523         g_slist_free(filters);
 524
 525         if (index == -1)
 526         {
 527             wxFAIL_MSG( wxT("wxFileDialog::GetFilterIndex - bad filter index returned by gtk+") );
 528             return 0;
 529         }
 530         else
 531             return index;
 532     }
 533     else
 534                 return wxGenericFileDialog::GetFilterIndex();
 535 }
 536
 537 #endif // wxUSE_FILEDLG &&  __WXGTK24__