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(wxConvFileName->cMB2WX(filename)).c_str());
  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     const wxString dir = fn.GetPath();
 241     if ( !dir.empty() )
 242     {
 243         gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 244                                             dir.fn_str());
 245     }
 246
 247     const wxString fname = fn.GetFullName();
 248     if ( style & wxFD_SAVE )
 249     {
 250         if ( !fname.empty() )
 251         {
 252             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 253                                               fname.fn_str());
 254         }
 255
 256 #if GTK_CHECK_VERSION(2,7,3)
 257         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 258             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 259 #endif
 260     }
 261     else // wxFD_OPEN
 262     {
 263         if ( !fname.empty() )
 264         {
 265             gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget),
 266                                           fn.GetFullPath().fn_str());
 267         }
 268     }
 269
 270 #if GTK_CHECK_VERSION(2,4,0)
 271     if ( style & wxFD_PREVIEW )
 272     {
 273         GtkWidget *previewImage = gtk_image_new();
 274
 275         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 276                                             previewImage);
 277         g_signal_connect(m_widget, "update-preview",
 278                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 279                          previewImage);
 280     }
 281 #endif // GTK+ 2.4+
 282 }
 283
 284 void wxFileDialog::OnFakeOk( wxCommandEvent &event )
 285 {
 286     if (!gtk_check_version(2,4,0))
 287         EndDialog(wxID_OK);
 288     else
 289         wxGenericFileDialog::OnListOk( event );
 290 }
 291
 292 int wxFileDialog::ShowModal()
 293 {
 294     if (!gtk_check_version(2,4,0))
 295         return wxDialog::ShowModal();
 296     else
 297         return wxGenericFileDialog::ShowModal();
 298 }
 299
 300 bool wxFileDialog::Show( bool show )
 301 {
 302     if (!gtk_check_version(2,4,0))
 303         return wxDialog::Show( show );
 304     else
 305         return wxGenericFileDialog::Show( show );
 306 }
 307
 308 void wxFileDialog::DoSetSize(int x, int y, int width, int height, int sizeFlags )
 309 {
 310     if (!m_wxwindow)
 311         return;
 312     else
 313         wxGenericFileDialog::DoSetSize( x, y, width, height, sizeFlags );
 314 }
 315
 316 wxString wxFileDialog::GetPath() const
 317 {
 318     if (!gtk_check_version(2,4,0))
 319     {
 320         wxGtkString str(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(m_widget)));
 321         return wxConvFileName->cMB2WX(str);
 322     }
 323
 324     return wxGenericFileDialog::GetPath();
 325 }
 326
 327 void wxFileDialog::GetFilenames(wxArrayString& files) const
 328 {
 329     if (!gtk_check_version(2,4,0))
 330     {
 331         GetPaths(files);
 332         for (size_t n = 0; n < files.GetCount(); ++n )
 333         {
 334             wxFileName file(files[n]);
 335             files[n] = file.GetFullName();
 336         }
 337     }
 338     else
 339         wxGenericFileDialog::GetFilenames( files );
 340 }
 341
 342 void wxFileDialog::GetPaths(wxArrayString& paths) const
 343 {
 344     if (!gtk_check_version(2,4,0))
 345     {
 346         paths.Empty();
 347         if (gtk_file_chooser_get_select_multiple(GTK_FILE_CHOOSER(m_widget)))
 348         {
 349             GSList *gpathsi = gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(m_widget));
 350             GSList *gpaths = gpathsi;
 351             while (gpathsi)
 352             {
 353                 wxString file(wxConvFileName->cMB2WX((gchar*) gpathsi->data));
 354                 paths.Add(file);
 355                 g_free(gpathsi->data);
 356                 gpathsi = gpathsi->next;
 357             }
 358
 359             g_slist_free(gpaths);
 360         }
 361         else
 362             paths.Add(GetPath());
 363     }
 364     else
 365         wxGenericFileDialog::GetPaths( paths );
 366 }
 367
 368 void wxFileDialog::SetMessage(const wxString& message)
 369 {
 370     if (!gtk_check_version(2,4,0))
 371     {
 372         m_message = message;
 373         SetTitle(message);
 374     }
 375     else
 376         wxGenericFileDialog::SetMessage( message );
 377 }
 378
 379 void wxFileDialog::SetPath(const wxString& path)
 380 {
 381     if (!gtk_check_version(2,4,0))
 382     {
 383         if (path.empty()) return;
 384
 385         gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(path));
 386     }
 387     else
 388         wxGenericFileDialog::SetPath( path );
 389 }
 390
 391 void wxFileDialog::SetDirectory(const wxString& dir)
 392 {
 393     if (!gtk_check_version(2,4,0))
 394     {
 395         if (wxDirExists(dir))
 396         {
 397             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(dir));
 398         }
 399     }
 400     else
 401         wxGenericFileDialog::SetDirectory( dir );
 402 }
 403
 404 wxString wxFileDialog::GetDirectory() const
 405 {
 406     if (!gtk_check_version(2,4,0))
 407     {
 408         wxGtkString str(gtk_file_chooser_get_current_folder(GTK_FILE_CHOOSER(m_widget)));
 409         return wxConvFileName->cMB2WX(str);
 410     }
 411
 412     return wxGenericFileDialog::GetDirectory();
 413 }
 414
 415 void wxFileDialog::SetFilename(const wxString& name)
 416 {
 417     if (!gtk_check_version(2,4,0))
 418     {
 419         if (HasFdFlag(wxFD_SAVE))
 420             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 421         else
 422             SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 423     }
 424     else
 425         wxGenericFileDialog::SetFilename( name );
 426 }
 427
 428 wxString wxFileDialog::GetFilename() const
 429 {
 430     if (!gtk_check_version(2,4,0))
 431         return wxFileName(GetPath()).GetFullName();
 432     else
 433         return wxGenericFileDialog::GetFilename();
 434 }
 435
 436 void wxFileDialog::SetWildcard(const wxString& wildCard)
 437 {
 438     if (!gtk_check_version(2,4,0))
 439     {
 440         // parse filters
 441         wxArrayString wildDescriptions, wildFilters;
 442         if (!wxParseCommonDialogsFilter(wildCard, wildDescriptions, wildFilters))
 443         {
 444             wxFAIL_MSG( wxT("wxFileDialog::SetWildCard - bad wildcard string") );
 445         }
 446         else
 447         {
 448             // Parsing went fine. Set m_wildCard to be returned by wxFileDialogBase::GetWildcard
 449             m_wildCard = wildCard;
 450
 451             GtkFileChooser* chooser = GTK_FILE_CHOOSER(m_widget);
 452
 453             // empty current filter list:
 454             GSList* ifilters = gtk_file_chooser_list_filters(chooser);
 455             GSList* filters = ifilters;
 456
 457             while (ifilters)
 458             {
 459                 gtk_file_chooser_remove_filter(chooser,GTK_FILE_FILTER(ifilters->data));
 460                 ifilters = ifilters->next;
 461             }
 462             g_slist_free(filters);
 463
 464             // add parsed to GtkChooser
 465             for (size_t n = 0; n < wildFilters.GetCount(); ++n)
 466             {
 467                 GtkFileFilter* filter = gtk_file_filter_new();
 468                 gtk_file_filter_set_name(filter, wxGTK_CONV(wildDescriptions[n]));
 469
 470                 wxStringTokenizer exttok(wildFilters[n], wxT(";"));
 471                 while (exttok.HasMoreTokens())
 472                 {
 473                     wxString token = exttok.GetNextToken();
 474                     gtk_file_filter_add_pattern(filter, wxGTK_CONV(token));
 475                 }
 476
 477                 gtk_file_chooser_add_filter(chooser, filter);
 478             }
 479
 480             // Reset the filter index
 481             SetFilterIndex(0);
 482         }
 483     }
 484     else
 485         wxGenericFileDialog::SetWildcard( wildCard );
 486 }
 487
 488 void wxFileDialog::SetFilterIndex(int filterIndex)
 489 {
 490
 491     if (!gtk_check_version(2,4,0))
 492     {
 493         gpointer filter;
 494         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 495         GSList *filters = gtk_file_chooser_list_filters(chooser);
 496
 497         filter = g_slist_nth_data(filters, filterIndex);
 498
 499         if (filter != NULL)
 500         {
 501             gtk_file_chooser_set_filter(chooser, GTK_FILE_FILTER(filter));
 502         }
 503         else
 504         {
 505             wxFAIL_MSG( wxT("wxFileDialog::SetFilterIndex - bad filter index") );
 506         }
 507
 508         g_slist_free(filters);
 509     }
 510     else
 511         wxGenericFileDialog::SetFilterIndex( filterIndex );
 512 }
 513
 514 int wxFileDialog::GetFilterIndex() const
 515 {
 516     if (!gtk_check_version(2,4,0))
 517     {
 518         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 519         GtkFileFilter *filter = gtk_file_chooser_get_filter(chooser);
 520         GSList *filters = gtk_file_chooser_list_filters(chooser);
 521         gint index = g_slist_index(filters, filter);
 522         g_slist_free(filters);
 523
 524         if (index == -1)
 525         {
 526             wxFAIL_MSG( wxT("wxFileDialog::GetFilterIndex - bad filter index returned by gtk+") );
 527             return 0;
 528         }
 529         else
 530             return index;
 531     }
 532     else
 533                 return wxGenericFileDialog::GetFilterIndex();
 534 }
 535
 536 #endif // wxUSE_FILEDLG &&  __WXGTK24__