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     gchar* 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         gchar* folder = g_path_get_dirname(filename);
  73         chdir(folder);
  74         g_free(folder);
  75     }
  76
  77     g_free(filename);
  78
  79     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_OK);
  80     event.SetEventObject(dialog);
  81     dialog->GetEventHandler()->ProcessEvent(event);
  82 }
  83 }
  84
  85 //-----------------------------------------------------------------------------
  86 // "clicked" for Cancel-button
  87 //-----------------------------------------------------------------------------
  88
  89 extern "C"
  90 {
  91
  92 static void gtk_filedialog_cancel_callback(GtkWidget *w, wxFileDialog *dialog)
  93 {
  94     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
  95     event.SetEventObject(dialog);
  96     dialog->GetEventHandler()->ProcessEvent(event);
  97 }
  98
  99 static void gtk_filedialog_response_callback(GtkWidget *w,
 100                                              gint response,
 101                                              wxFileDialog *dialog)
 102 {
 103     wxapp_install_idle_handler();
 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     wxGtkString filename(gtk_file_chooser_get_preview_filename(chooser));
 117     if ( !filename )
 118         return;
 119
 120     GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
 121     gboolean have_preview = pixbuf != NULL;
 122
 123     gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
 124     if ( pixbuf )
 125         g_object_unref (pixbuf);
 126
 127     gtk_file_chooser_set_preview_widget_active(chooser, have_preview);
 128 #else
 129     wxUnusedVar(chooser);
 130     wxUnusedVar(user_data);
 131 #endif // GTK+ 2.4+
 132 }
 133
 134 } // extern "C"
 135
 136
 137 //-----------------------------------------------------------------------------
 138 // wxFileDialog
 139 //-----------------------------------------------------------------------------
 140
 141 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxGenericFileDialog)
 142
 143 BEGIN_EVENT_TABLE(wxFileDialog,wxGenericFileDialog)
 144     EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
 145 END_EVENT_TABLE()
 146
 147 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 148                            const wxString& defaultDir,
 149                            const wxString& defaultFileName,
 150                            const wxString& wildCard,
 151                            long style, const wxPoint& pos,
 152                            const wxSize& sz,
 153                            const wxString& name)
 154     : wxGenericFileDialog(parent, message, defaultDir, defaultFileName,
 155                           wildCard, style, pos, sz, name, true )
 156 {
 157     if (gtk_check_version(2,4,0))
 158     {
 159         wxGenericFileDialog::Create( parent, message, defaultDir,
 160                                      defaultFileName, wildCard, style, pos );
 161         return;
 162     }
 163
 164     m_needParent = false;
 165
 166     if (!PreCreation(parent, pos, wxDefaultSize) ||
 167         !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
 168                 wxDefaultValidator, wxT("filedialog")))
 169     {
 170         wxFAIL_MSG( wxT("wxFileDialog creation failed") );
 171         return;
 172     }
 173
 174     GtkFileChooserAction gtk_action;
 175     GtkWindow* gtk_parent = NULL;
 176     if (parent)
 177         gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
 178
 179     const gchar* ok_btn_stock;
 180     if ( style & wxFD_SAVE )
 181     {
 182         gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
 183         ok_btn_stock = GTK_STOCK_SAVE;
 184     }
 185     else
 186     {
 187         gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
 188         ok_btn_stock = GTK_STOCK_OPEN;
 189     }
 190
 191     m_widget = gtk_file_chooser_dialog_new(
 192                    wxGTK_CONV(m_message),
 193                    gtk_parent,
 194                    gtk_action,
 195                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 196                    ok_btn_stock, GTK_RESPONSE_ACCEPT,
 197                    NULL);
 198
 199     gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
 200
 201     if ( style & wxFD_MULTIPLE )
 202         gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(m_widget), true);
 203
 204     // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically destroys
 205     // the dialog when the user press ESC on the dialog: in that case a second call to
 206     // ShowModal() would result in a bunch of Gtk-CRITICAL 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 loaded.
 213     // In that case get/set_uri(s) should be used instead of get/set_filename(s) everywhere
 214     // and the GtkFileChooserDialog should probably also be created with a backend,
 215     // e.g "gnome-vfs", "default", ... (gtk_file_chooser_dialog_new_with_backend).
 216     // Currently local-only is kept as the default - true:
 217     // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
 218
 219     g_signal_connect (m_widget, "response",
 220         G_CALLBACK (gtk_filedialog_response_callback), this);
 221
 222     SetWildcard(wildCard);
 223
 224     if ( style & wxFD_SAVE )
 225     {
 226         if ( !defaultDir.empty() )
 227             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 228             wxConvFileName->cWX2MB(defaultDir));
 229
 230         gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 231             wxGTK_CONV(defaultFileName));
 232
 233 #if GTK_CHECK_VERSION(2,7,3)
 234         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 235             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 236 #endif
 237     }
 238     else // wxFD_OPEN
 239     {
 240         if ( !defaultFileName.empty() )
 241         {
 242             wxString dir;
 243             if ( defaultDir.empty() )
 244                 dir = ::wxGetCwd();
 245             else
 246                 dir = defaultDir;
 247
 248             gtk_file_chooser_set_filename(
 249                 GTK_FILE_CHOOSER(m_widget),
 250                 wxConvFileName->cWX2MB( wxFileName(dir, defaultFileName).GetFullPath() ) );
 251         }
 252         else if ( !defaultDir.empty() )
 253         {
 254             gtk_file_chooser_set_current_folder( GTK_FILE_CHOOSER(m_widget),
 255                 wxConvFileName->cWX2MB(defaultDir) );
 256         }
 257     }
 258
 259 #if GTK_CHECK_VERSION(2,4,0)
 260     if ( style & wxFD_PREVIEW )
 261     {
 262         GtkWidget *previewImage = gtk_image_new();
 263
 264         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 265                                             previewImage);
 266         g_signal_connect(m_widget, "update-preview",
 267                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 268                          previewImage);
 269     }
 270 #endif // GTK+ 2.4+
 271 }
 272
 273 void wxFileDialog::OnFakeOk( wxCommandEvent &event )
 274 {
 275     if (!gtk_check_version(2,4,0))
 276         EndDialog(wxID_OK);
 277     else
 278         wxGenericFileDialog::OnListOk( event );
 279 }
 280
 281 int wxFileDialog::ShowModal()
 282 {
 283     if (!gtk_check_version(2,4,0))
 284         return wxDialog::ShowModal();
 285     else
 286         return wxGenericFileDialog::ShowModal();
 287 }
 288
 289 bool wxFileDialog::Show( bool show )
 290 {
 291     if (!gtk_check_version(2,4,0))
 292         return wxDialog::Show( show );
 293     else
 294         return wxGenericFileDialog::Show( show );
 295 }
 296
 297 void wxFileDialog::DoSetSize(int x, int y, int width, int height, int sizeFlags )
 298 {
 299     if (!m_wxwindow)
 300         return;
 301     else
 302         wxGenericFileDialog::DoSetSize( x, y, width, height, sizeFlags );
 303 }
 304
 305 wxString wxFileDialog::GetPath() const
 306 {
 307     if (!gtk_check_version(2,4,0))
 308         return wxConvFileName->cMB2WX(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(m_widget)));
 309     else
 310         return wxGenericFileDialog::GetPath();
 311 }
 312
 313 void wxFileDialog::GetFilenames(wxArrayString& files) const
 314 {
 315     if (!gtk_check_version(2,4,0))
 316     {
 317         GetPaths(files);
 318         for (size_t n = 0; n < files.GetCount(); ++n )
 319         {
 320             wxFileName file(files[n]);
 321             files[n] = file.GetFullName();
 322         }
 323     }
 324     else
 325         wxGenericFileDialog::GetFilenames( files );
 326 }
 327
 328 void wxFileDialog::GetPaths(wxArrayString& paths) const
 329 {
 330     if (!gtk_check_version(2,4,0))
 331     {
 332         paths.Empty();
 333         if (gtk_file_chooser_get_select_multiple(GTK_FILE_CHOOSER(m_widget)))
 334         {
 335             GSList *gpathsi = gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(m_widget));
 336             GSList *gpaths = gpathsi;
 337             while (gpathsi)
 338             {
 339                 wxString file(wxConvFileName->cMB2WX((gchar*) gpathsi->data));
 340                 paths.Add(file);
 341                 g_free(gpathsi->data);
 342                 gpathsi = gpathsi->next;
 343             }
 344
 345             g_slist_free(gpaths);
 346         }
 347         else
 348             paths.Add(GetPath());
 349     }
 350     else
 351         wxGenericFileDialog::GetPaths( paths );
 352 }
 353
 354 void wxFileDialog::SetMessage(const wxString& message)
 355 {
 356     if (!gtk_check_version(2,4,0))
 357     {
 358         m_message = message;
 359         SetTitle(message);
 360     }
 361     else
 362         wxGenericFileDialog::SetMessage( message );
 363 }
 364
 365 void wxFileDialog::SetPath(const wxString& path)
 366 {
 367     if (!gtk_check_version(2,4,0))
 368     {
 369         if (path.empty()) return;
 370
 371         gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(path));
 372     }
 373     else
 374         wxGenericFileDialog::SetPath( path );
 375 }
 376
 377 void wxFileDialog::SetDirectory(const wxString& dir)
 378 {
 379     if (!gtk_check_version(2,4,0))
 380     {
 381         if (wxDirExists(dir))
 382         {
 383             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(dir));
 384         }
 385     }
 386     else
 387         wxGenericFileDialog::SetDirectory( dir );
 388 }
 389
 390 wxString wxFileDialog::GetDirectory() const
 391 {
 392     if (!gtk_check_version(2,4,0))
 393         return wxConvFileName->cMB2WX(
 394             gtk_file_chooser_get_current_folder( GTK_FILE_CHOOSER(m_widget) ) );
 395     else
 396         return wxGenericFileDialog::GetDirectory();
 397 }
 398
 399 void wxFileDialog::SetFilename(const wxString& name)
 400 {
 401     if (!gtk_check_version(2,4,0))
 402     {
 403         if (HasFlag(wxFD_SAVE))
 404             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 405         else
 406             SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 407     }
 408     else
 409         wxGenericFileDialog::SetFilename( name );
 410 }
 411
 412 wxString wxFileDialog::GetFilename() const
 413 {
 414     if (!gtk_check_version(2,4,0))
 415         return wxFileName(
 416             wxConvFileName->cMB2WX(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(m_widget))) ).GetFullName();
 417     else
 418         return wxGenericFileDialog::GetFilename();
 419 }
 420
 421 void wxFileDialog::SetWildcard(const wxString& wildCard)
 422 {
 423     if (!gtk_check_version(2,4,0))
 424     {
 425         // parse filters
 426         wxArrayString wildDescriptions, wildFilters;
 427         if (!wxParseCommonDialogsFilter(wildCard, wildDescriptions, wildFilters))
 428         {
 429             wxFAIL_MSG( wxT("wxFileDialog::SetWildCard - bad wildcard string") );
 430         }
 431         else
 432         {
 433             // Parsing went fine. Set m_wildCard to be returned by wxFileDialogBase::GetWildcard
 434             m_wildCard = wildCard;
 435
 436             GtkFileChooser* chooser = GTK_FILE_CHOOSER(m_widget);
 437
 438             // empty current filter list:
 439             GSList* ifilters = gtk_file_chooser_list_filters(chooser);
 440             GSList* filters = ifilters;
 441
 442             while (ifilters)
 443             {
 444                 gtk_file_chooser_remove_filter(chooser,GTK_FILE_FILTER(ifilters->data));
 445                 ifilters = ifilters->next;
 446             }
 447             g_slist_free(filters);
 448
 449             // add parsed to GtkChooser
 450             for (size_t n = 0; n < wildFilters.GetCount(); ++n)
 451             {
 452                 GtkFileFilter* filter = gtk_file_filter_new();
 453                 gtk_file_filter_set_name(filter, wxGTK_CONV(wildDescriptions[n]));
 454
 455                 wxStringTokenizer exttok(wildFilters[n], wxT(";"));
 456                 while (exttok.HasMoreTokens())
 457                 {
 458                     wxString token = exttok.GetNextToken();
 459                     gtk_file_filter_add_pattern(filter, wxGTK_CONV(token));
 460                 }
 461
 462                 gtk_file_chooser_add_filter(chooser, filter);
 463             }
 464
 465             // Reset the filter index
 466             SetFilterIndex(0);
 467         }
 468     }
 469     else
 470         wxGenericFileDialog::SetWildcard( wildCard );
 471 }
 472
 473 void wxFileDialog::SetFilterIndex(int filterIndex)
 474 {
 475
 476     if (!gtk_check_version(2,4,0))
 477     {
 478         gpointer filter;
 479         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 480         GSList *filters = gtk_file_chooser_list_filters(chooser);
 481
 482         filter = g_slist_nth_data(filters, filterIndex);
 483
 484         if (filter != NULL)
 485         {
 486             gtk_file_chooser_set_filter(chooser, GTK_FILE_FILTER(filter));
 487         }
 488         else
 489         {
 490             wxFAIL_MSG( wxT("wxFileDialog::SetFilterIndex - bad filter index") );
 491         }
 492
 493         g_slist_free(filters);
 494     }
 495     else
 496         wxGenericFileDialog::SetFilterIndex( filterIndex );
 497 }
 498
 499 int wxFileDialog::GetFilterIndex() const
 500 {
 501     if (!gtk_check_version(2,4,0))
 502     {
 503         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 504         GtkFileFilter *filter = gtk_file_chooser_get_filter(chooser);
 505         GSList *filters = gtk_file_chooser_list_filters(chooser);
 506         gint index = g_slist_index(filters, filter);
 507         g_slist_free(filters);
 508
 509         if (index == -1)
 510         {
 511             wxFAIL_MSG( wxT("wxFileDialog::GetFilterIndex - bad filter index returned by gtk+") );
 512             return 0;
 513         }
 514         else
 515             return index;
 516     }
 517     else
 518                 return wxGenericFileDialog::GetFilterIndex();
 519 }
 520
 521 #endif // wxUSE_FILEDLG &&  __WXGTK24__