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
 117     gchar *str = gtk_file_chooser_get_preview_filename(chooser);
 118     wxGtkString filename(str);
 119     if (str) g_free(str);
 120
 121     if ( !filename )
 122         return;
 123
 124     GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
 125     gboolean have_preview = pixbuf != NULL;
 126
 127     gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
 128     if ( pixbuf )
 129         g_object_unref (pixbuf);
 130
 131     gtk_file_chooser_set_preview_widget_active(chooser, have_preview);
 132 #else
 133     wxUnusedVar(chooser);
 134     wxUnusedVar(user_data);
 135 #endif // GTK+ 2.4+
 136 }
 137
 138 } // extern "C"
 139
 140
 141 //-----------------------------------------------------------------------------
 142 // wxFileDialog
 143 //-----------------------------------------------------------------------------
 144
 145 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxGenericFileDialog)
 146
 147 BEGIN_EVENT_TABLE(wxFileDialog,wxGenericFileDialog)
 148     EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
 149 END_EVENT_TABLE()
 150
 151 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 152                            const wxString& defaultDir,
 153                            const wxString& defaultFileName,
 154                            const wxString& wildCard,
 155                            long style, const wxPoint& pos,
 156                            const wxSize& sz,
 157                            const wxString& name)
 158     : wxGenericFileDialog(parent, message, defaultDir, defaultFileName,
 159                           wildCard, style, pos, sz, name, true )
 160 {
 161     if (gtk_check_version(2,4,0))
 162     {
 163         wxGenericFileDialog::Create( parent, message, defaultDir,
 164                                      defaultFileName, wildCard, style, pos );
 165         return;
 166     }
 167
 168     m_needParent = false;
 169
 170     if (!PreCreation(parent, pos, wxDefaultSize) ||
 171         !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
 172                 wxDefaultValidator, wxT("filedialog")))
 173     {
 174         wxFAIL_MSG( wxT("wxFileDialog creation failed") );
 175         return;
 176     }
 177
 178     GtkFileChooserAction gtk_action;
 179     GtkWindow* gtk_parent = NULL;
 180     if (parent)
 181         gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
 182
 183     const gchar* ok_btn_stock;
 184     if ( style & wxFD_SAVE )
 185     {
 186         gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
 187         ok_btn_stock = GTK_STOCK_SAVE;
 188     }
 189     else
 190     {
 191         gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
 192         ok_btn_stock = GTK_STOCK_OPEN;
 193     }
 194
 195     m_widget = gtk_file_chooser_dialog_new(
 196                    wxGTK_CONV(m_message),
 197                    gtk_parent,
 198                    gtk_action,
 199                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 200                    ok_btn_stock, GTK_RESPONSE_ACCEPT,
 201                    NULL);
 202
 203     gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
 204
 205     if ( style & wxFD_MULTIPLE )
 206         gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(m_widget), true);
 207
 208     // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically destroys
 209     // the dialog when the user press ESC on the dialog: in that case a second call to
 210     // ShowModal() would result in a bunch of Gtk-CRITICAL errors...
 211     g_signal_connect (G_OBJECT(m_widget),
 212                     "delete_event",
 213                     G_CALLBACK (gtk_widget_hide_on_delete),
 214                     (gpointer)this);
 215
 216     // local-only property could be set to false to allow non-local files to be loaded.
 217     // In that case get/set_uri(s) should be used instead of get/set_filename(s) everywhere
 218     // and the GtkFileChooserDialog should probably also be created with a backend,
 219     // e.g "gnome-vfs", "default", ... (gtk_file_chooser_dialog_new_with_backend).
 220     // Currently local-only is kept 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 ( style & wxFD_SAVE )
 229     {
 230         if ( !defaultDir.empty() )
 231             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 232             wxConvFileName->cWX2MB(defaultDir));
 233
 234         gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 235             wxGTK_CONV(defaultFileName));
 236
 237 #if GTK_CHECK_VERSION(2,7,3)
 238         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 239             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 240 #endif
 241     }
 242     else // wxFD_OPEN
 243     {
 244         if ( !defaultFileName.empty() )
 245         {
 246             wxString dir;
 247             if ( defaultDir.empty() )
 248                 dir = ::wxGetCwd();
 249             else
 250                 dir = defaultDir;
 251
 252             gtk_file_chooser_set_filename(
 253                 GTK_FILE_CHOOSER(m_widget),
 254                 wxConvFileName->cWX2MB( wxFileName(dir, defaultFileName).GetFullPath() ) );
 255         }
 256         else if ( !defaultDir.empty() )
 257         {
 258             gtk_file_chooser_set_current_folder( GTK_FILE_CHOOSER(m_widget),
 259                 wxConvFileName->cWX2MB(defaultDir) );
 260         }
 261     }
 262
 263 #if GTK_CHECK_VERSION(2,4,0)
 264     if ( style & wxFD_PREVIEW )
 265     {
 266         GtkWidget *previewImage = gtk_image_new();
 267
 268         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 269                                             previewImage);
 270         g_signal_connect(m_widget, "update-preview",
 271                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 272                          previewImage);
 273     }
 274 #endif // GTK+ 2.4+
 275 }
 276
 277 void wxFileDialog::OnFakeOk( wxCommandEvent &event )
 278 {
 279     if (!gtk_check_version(2,4,0))
 280         EndDialog(wxID_OK);
 281     else
 282         wxGenericFileDialog::OnListOk( event );
 283 }
 284
 285 int wxFileDialog::ShowModal()
 286 {
 287     if (!gtk_check_version(2,4,0))
 288         return wxDialog::ShowModal();
 289     else
 290         return wxGenericFileDialog::ShowModal();
 291 }
 292
 293 bool wxFileDialog::Show( bool show )
 294 {
 295     if (!gtk_check_version(2,4,0))
 296         return wxDialog::Show( show );
 297     else
 298         return wxGenericFileDialog::Show( show );
 299 }
 300
 301 void wxFileDialog::DoSetSize(int x, int y, int width, int height, int sizeFlags )
 302 {
 303     if (!m_wxwindow)
 304         return;
 305     else
 306         wxGenericFileDialog::DoSetSize( x, y, width, height, sizeFlags );
 307 }
 308
 309 wxString wxFileDialog::GetPath() const
 310 {
 311     if (!gtk_check_version(2,4,0))
 312     {
 313         gchar *str = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(m_widget));
 314         wxString ret = wxConvFileName->cMB2WX(str);
 315         if (str) g_free(str);
 316
 317         return ret;
 318     }
 319     else
 320         return wxGenericFileDialog::GetPath();
 321 }
 322
 323 void wxFileDialog::GetFilenames(wxArrayString& files) const
 324 {
 325     if (!gtk_check_version(2,4,0))
 326     {
 327         GetPaths(files);
 328         for (size_t n = 0; n < files.GetCount(); ++n )
 329         {
 330             wxFileName file(files[n]);
 331             files[n] = file.GetFullName();
 332         }
 333     }
 334     else
 335         wxGenericFileDialog::GetFilenames( files );
 336 }
 337
 338 void wxFileDialog::GetPaths(wxArrayString& paths) const
 339 {
 340     if (!gtk_check_version(2,4,0))
 341     {
 342         paths.Empty();
 343         if (gtk_file_chooser_get_select_multiple(GTK_FILE_CHOOSER(m_widget)))
 344         {
 345             GSList *gpathsi = gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(m_widget));
 346             GSList *gpaths = gpathsi;
 347             while (gpathsi)
 348             {
 349                 wxString file(wxConvFileName->cMB2WX((gchar*) gpathsi->data));
 350                 paths.Add(file);
 351                 g_free(gpathsi->data);
 352                 gpathsi = gpathsi->next;
 353             }
 354
 355             g_slist_free(gpaths);
 356         }
 357         else
 358             paths.Add(GetPath());
 359     }
 360     else
 361         wxGenericFileDialog::GetPaths( paths );
 362 }
 363
 364 void wxFileDialog::SetMessage(const wxString& message)
 365 {
 366     if (!gtk_check_version(2,4,0))
 367     {
 368         m_message = message;
 369         SetTitle(message);
 370     }
 371     else
 372         wxGenericFileDialog::SetMessage( message );
 373 }
 374
 375 void wxFileDialog::SetPath(const wxString& path)
 376 {
 377     if (!gtk_check_version(2,4,0))
 378     {
 379         if (path.empty()) return;
 380
 381         gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(path));
 382     }
 383     else
 384         wxGenericFileDialog::SetPath( path );
 385 }
 386
 387 void wxFileDialog::SetDirectory(const wxString& dir)
 388 {
 389     if (!gtk_check_version(2,4,0))
 390     {
 391         if (wxDirExists(dir))
 392         {
 393             gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget), wxConvFileName->cWX2MB(dir));
 394         }
 395     }
 396     else
 397         wxGenericFileDialog::SetDirectory( dir );
 398 }
 399
 400 wxString wxFileDialog::GetDirectory() const
 401 {
 402     if (!gtk_check_version(2,4,0))
 403     {
 404         gchar *str = gtk_file_chooser_get_current_folder( GTK_FILE_CHOOSER(m_widget) );
 405         wxString ret = wxConvFileName->cMB2WX(str);
 406         if (str) g_free(str);
 407
 408         return ret;
 409     }
 410     else
 411         return wxGenericFileDialog::GetDirectory();
 412 }
 413
 414 void wxFileDialog::SetFilename(const wxString& name)
 415 {
 416     if (!gtk_check_version(2,4,0))
 417     {
 418         if (HasFlag(wxFD_SAVE))
 419             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 420         else
 421             SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 422     }
 423     else
 424         wxGenericFileDialog::SetFilename( name );
 425 }
 426
 427 wxString wxFileDialog::GetFilename() const
 428 {
 429     if (!gtk_check_version(2,4,0))
 430         return wxFileName(GetPath()).GetFullName();
 431     else
 432         return wxGenericFileDialog::GetFilename();
 433 }
 434
 435 void wxFileDialog::SetWildcard(const wxString& wildCard)
 436 {
 437     if (!gtk_check_version(2,4,0))
 438     {
 439         // parse filters
 440         wxArrayString wildDescriptions, wildFilters;
 441         if (!wxParseCommonDialogsFilter(wildCard, wildDescriptions, wildFilters))
 442         {
 443             wxFAIL_MSG( wxT("wxFileDialog::SetWildCard - bad wildcard string") );
 444         }
 445         else
 446         {
 447             // Parsing went fine. Set m_wildCard to be returned by wxFileDialogBase::GetWildcard
 448             m_wildCard = wildCard;
 449
 450             GtkFileChooser* chooser = GTK_FILE_CHOOSER(m_widget);
 451
 452             // empty current filter list:
 453             GSList* ifilters = gtk_file_chooser_list_filters(chooser);
 454             GSList* filters = ifilters;
 455
 456             while (ifilters)
 457             {
 458                 gtk_file_chooser_remove_filter(chooser,GTK_FILE_FILTER(ifilters->data));
 459                 ifilters = ifilters->next;
 460             }
 461             g_slist_free(filters);
 462
 463             // add parsed to GtkChooser
 464             for (size_t n = 0; n < wildFilters.GetCount(); ++n)
 465             {
 466                 GtkFileFilter* filter = gtk_file_filter_new();
 467                 gtk_file_filter_set_name(filter, wxGTK_CONV(wildDescriptions[n]));
 468
 469                 wxStringTokenizer exttok(wildFilters[n], wxT(";"));
 470                 while (exttok.HasMoreTokens())
 471                 {
 472                     wxString token = exttok.GetNextToken();
 473                     gtk_file_filter_add_pattern(filter, wxGTK_CONV(token));
 474                 }
 475
 476                 gtk_file_chooser_add_filter(chooser, filter);
 477             }
 478
 479             // Reset the filter index
 480             SetFilterIndex(0);
 481         }
 482     }
 483     else
 484         wxGenericFileDialog::SetWildcard( wildCard );
 485 }
 486
 487 void wxFileDialog::SetFilterIndex(int filterIndex)
 488 {
 489
 490     if (!gtk_check_version(2,4,0))
 491     {
 492         gpointer filter;
 493         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 494         GSList *filters = gtk_file_chooser_list_filters(chooser);
 495
 496         filter = g_slist_nth_data(filters, filterIndex);
 497
 498         if (filter != NULL)
 499         {
 500             gtk_file_chooser_set_filter(chooser, GTK_FILE_FILTER(filter));
 501         }
 502         else
 503         {
 504             wxFAIL_MSG( wxT("wxFileDialog::SetFilterIndex - bad filter index") );
 505         }
 506
 507         g_slist_free(filters);
 508     }
 509     else
 510         wxGenericFileDialog::SetFilterIndex( filterIndex );
 511 }
 512
 513 int wxFileDialog::GetFilterIndex() const
 514 {
 515     if (!gtk_check_version(2,4,0))
 516     {
 517         GtkFileChooser *chooser = GTK_FILE_CHOOSER(m_widget);
 518         GtkFileFilter *filter = gtk_file_chooser_get_filter(chooser);
 519         GSList *filters = gtk_file_chooser_list_filters(chooser);
 520         gint index = g_slist_index(filters, filter);
 521         g_slist_free(filters);
 522
 523         if (index == -1)
 524         {
 525             wxFAIL_MSG( wxT("wxFileDialog::GetFilterIndex - bad filter index returned by gtk+") );
 526             return 0;
 527         }
 528         else
 529             return index;
 530     }
 531     else
 532                 return wxGenericFileDialog::GetFilterIndex();
 533 }
 534
 535 #endif // wxUSE_FILEDLG &&  __WXGTK24__