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
  95 gtk_filedialog_cancel_callback(GtkWidget * WXUNUSED(w), wxFileDialog *dialog)
  96 {
  97     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
  98     event.SetEventObject(dialog);
  99     dialog->GetEventHandler()->ProcessEvent(event);
 100 }
 101
 102 static void gtk_filedialog_response_callback(GtkWidget *w,
 103                                              gint response,
 104                                              wxFileDialog *dialog)
 105 {
 106     if (response == GTK_RESPONSE_ACCEPT)
 107         gtk_filedialog_ok_callback(w, dialog);
 108     else    // GTK_RESPONSE_CANCEL or GTK_RESPONSE_NONE
 109         gtk_filedialog_cancel_callback(w, dialog);
 110 }
 111
 112 static void gtk_filedialog_update_preview_callback(GtkFileChooser *chooser,
 113                                                    gpointer user_data)
 114 {
 115 #if GTK_CHECK_VERSION(2,4,0)
 116     GtkWidget *preview = GTK_WIDGET(user_data);
 117
 118     wxGtkString filename(gtk_file_chooser_get_preview_filename(chooser));
 119
 120     if ( !filename )
 121         return;
 122
 123     GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
 124     gboolean have_preview = pixbuf != NULL;
 125
 126     gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
 127     if ( pixbuf )
 128         g_object_unref (pixbuf);
 129
 130     gtk_file_chooser_set_preview_widget_active(chooser, have_preview);
 131 #else
 132     wxUnusedVar(chooser);
 133     wxUnusedVar(user_data);
 134 #endif // GTK+ 2.4+
 135 }
 136
 137 } // extern "C"
 138
 139
 140 //-----------------------------------------------------------------------------
 141 // wxFileDialog
 142 //-----------------------------------------------------------------------------
 143
 144 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxGenericFileDialog)
 145
 146 BEGIN_EVENT_TABLE(wxFileDialog,wxGenericFileDialog)
 147     EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
 148 END_EVENT_TABLE()
 149
 150 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 151                            const wxString& defaultDir,
 152                            const wxString& defaultFileName,
 153                            const wxString& wildCard,
 154                            long style, const wxPoint& pos,
 155                            const wxSize& sz,
 156                            const wxString& name)
 157     : wxGenericFileDialog(parent, message, defaultDir, defaultFileName,
 158                           wildCard, style, pos, sz, name, true )
 159 {
 160     if (gtk_check_version(2,4,0))
 161     {
 162         wxGenericFileDialog::Create( parent, message, defaultDir,
 163                                      defaultFileName, wildCard, style, pos );
 164         return;
 165     }
 166
 167     parent = GetParentForModalDialog(parent);
 168
 169     if (!PreCreation(parent, pos, wxDefaultSize) ||
 170         !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
 171                 wxDefaultValidator, wxT("filedialog")))
 172     {
 173         wxFAIL_MSG( wxT("wxFileDialog creation failed") );
 174         return;
 175     }
 176
 177     GtkFileChooserAction gtk_action;
 178     GtkWindow* gtk_parent = NULL;
 179     if (parent)
 180         gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
 181
 182     const gchar* ok_btn_stock;
 183     if ( style & wxFD_SAVE )
 184     {
 185         gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
 186         ok_btn_stock = GTK_STOCK_SAVE;
 187     }
 188     else
 189     {
 190         gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
 191         ok_btn_stock = GTK_STOCK_OPEN;
 192     }
 193
 194     m_widget = gtk_file_chooser_dialog_new(
 195                    wxGTK_CONV(m_message),
 196                    gtk_parent,
 197                    gtk_action,
 198                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 199                    ok_btn_stock, GTK_RESPONSE_ACCEPT,
 200                    NULL);
 201
 202     m_fc.SetWidget( GTK_FILE_CHOOSER(m_widget) );
 203
 204     gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
 205
 206     if ( style & wxFD_MULTIPLE )
 207         gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(m_widget), true);
 208
 209     // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically
 210     // destroys the dialog when the user press ESC on the dialog: in that case
 211     // a second call to ShowModal() would result in a bunch of Gtk-CRITICAL
 212     // errors...
 213     g_signal_connect (G_OBJECT(m_widget),
 214                     "delete_event",
 215                     G_CALLBACK (gtk_widget_hide_on_delete),
 216                     (gpointer)this);
 217
 218     // local-only property could be set to false to allow non-local files to be
 219     // loaded. In that case get/set_uri(s) should be used instead of
 220     // get/set_filename(s) everywhere and the GtkFileChooserDialog should
 221     // probably also be created with a backend, e.g "gnome-vfs", "default", ...
 222     // (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
 223     // as the default - true:
 224     // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
 225
 226     g_signal_connect (m_widget, "response",
 227         G_CALLBACK (gtk_filedialog_response_callback), this);
 228
 229     SetWildcard(wildCard);
 230
 231     // if defaultDir is specified it should contain the directory and
 232     // defaultFileName should contain the default name of the file, however if
 233     // directory is not given, defaultFileName contains both
 234     wxFileName fn;
 235     if ( defaultDir.empty() )
 236         fn.Assign(defaultFileName);
 237     else if ( !defaultFileName.empty() )
 238         fn.Assign(defaultDir, defaultFileName);
 239     else
 240         fn.AssignDir(defaultDir);
 241
 242     // set the initial file name and/or directory
 243     fn.MakeAbsolute(); // GTK+ needs absolute path
 244     const wxString dir = fn.GetPath();
 245     if ( !dir.empty() )
 246     {
 247         gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 248                                             dir.fn_str());
 249     }
 250
 251     const wxString fname = fn.GetFullName();
 252     if ( style & wxFD_SAVE )
 253     {
 254         if ( !fname.empty() )
 255         {
 256             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 257                                               fname.fn_str());
 258         }
 259
 260 #if GTK_CHECK_VERSION(2,7,3)
 261         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 262             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 263 #endif
 264     }
 265     else // wxFD_OPEN
 266     {
 267         if ( !fname.empty() )
 268         {
 269             gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget),
 270                                           fn.GetFullPath().fn_str());
 271         }
 272     }
 273
 274 #if GTK_CHECK_VERSION(2,4,0)
 275     if ( style & wxFD_PREVIEW )
 276     {
 277         GtkWidget *previewImage = gtk_image_new();
 278
 279         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 280                                             previewImage);
 281         g_signal_connect(m_widget, "update-preview",
 282                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 283                          previewImage);
 284     }
 285 #endif // GTK+ 2.4+
 286 }
 287
 288 void wxFileDialog::OnFakeOk( wxCommandEvent &event )
 289 {
 290     if (!gtk_check_version(2,4,0))
 291         EndDialog(wxID_OK);
 292     else
 293         wxGenericFileDialog::OnOk( event );
 294 }
 295
 296 int wxFileDialog::ShowModal()
 297 {
 298     if (!gtk_check_version(2,4,0))
 299         return wxDialog::ShowModal();
 300     else
 301         return wxGenericFileDialog::ShowModal();
 302 }
 303
 304 bool wxFileDialog::Show( bool show )
 305 {
 306     if (!gtk_check_version(2,4,0))
 307         return wxDialog::Show( show );
 308     else
 309         return wxGenericFileDialog::Show( show );
 310 }
 311
 312 void wxFileDialog::DoSetSize(int x, int y, int width, int height, int sizeFlags )
 313 {
 314     if (!m_wxwindow)
 315         return;
 316     else
 317         wxGenericFileDialog::DoSetSize( x, y, width, height, sizeFlags );
 318 }
 319
 320 wxString wxFileDialog::GetPath() const
 321 {
 322     if (!gtk_check_version(2,4,0))
 323     {
 324         return m_fc.GetPath();
 325     }
 326
 327     return wxGenericFileDialog::GetPath();
 328 }
 329
 330 void wxFileDialog::GetFilenames(wxArrayString& files) const
 331 {
 332     if (!gtk_check_version(2,4,0))
 333     {
 334         m_fc.GetFilenames( files );
 335     }
 336     else
 337         wxGenericFileDialog::GetFilenames( files );
 338 }
 339
 340 void wxFileDialog::GetPaths(wxArrayString& paths) const
 341 {
 342     if (!gtk_check_version(2,4,0))
 343     {
 344         m_fc.GetPaths( paths );
 345     }
 346     else
 347         wxGenericFileDialog::GetPaths( paths );
 348 }
 349
 350 void wxFileDialog::SetMessage(const wxString& message)
 351 {
 352     if (!gtk_check_version(2,4,0))
 353     {
 354         m_message = message;
 355         SetTitle(message);
 356     }
 357     else
 358         wxGenericFileDialog::SetMessage( message );
 359 }
 360
 361 void wxFileDialog::SetPath(const wxString& path)
 362 {
 363     if (!gtk_check_version(2,4,0))
 364     {
 365         m_fc.SetPath( path );
 366     }
 367     else
 368         wxGenericFileDialog::SetPath( path );
 369 }
 370
 371 void wxFileDialog::SetDirectory(const wxString& dir)
 372 {
 373     if (!gtk_check_version(2,4,0))
 374     {
 375         m_fc.SetDirectory( dir );
 376     }
 377     else
 378         wxGenericFileDialog::SetDirectory( dir );
 379 }
 380
 381 wxString wxFileDialog::GetDirectory() const
 382 {
 383     if (!gtk_check_version(2,4,0))
 384     {
 385         m_fc.GetDirectory();
 386     }
 387
 388     return wxGenericFileDialog::GetDirectory();
 389 }
 390
 391 void wxFileDialog::SetFilename(const wxString& name)
 392 {
 393     if (!gtk_check_version(2,4,0))
 394     {
 395         if (HasFdFlag(wxFD_SAVE))
 396             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 397         else
 398             SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 399     }
 400     else
 401         wxGenericFileDialog::SetFilename( name );
 402 }
 403
 404 wxString wxFileDialog::GetFilename() const
 405 {
 406     if (!gtk_check_version(2,4,0))
 407         return m_fc.GetFilename();
 408     else
 409         return wxGenericFileDialog::GetFilename();
 410 }
 411
 412 void wxFileDialog::SetWildcard(const wxString& wildCard)
 413 {
 414     if (!gtk_check_version(2,4,0))
 415     {
 416         m_fc.SetWildcard( wildCard );
 417     }
 418     else
 419         wxGenericFileDialog::SetWildcard( wildCard );
 420 }
 421
 422 void wxFileDialog::SetFilterIndex(int filterIndex)
 423 {
 424
 425     if (!gtk_check_version(2,4,0))
 426     {
 427        m_fc.SetFilterIndex( filterIndex);
 428     }
 429     else
 430         wxGenericFileDialog::SetFilterIndex( filterIndex );
 431 }
 432
 433 int wxFileDialog::GetFilterIndex() const
 434 {
 435     if (!gtk_check_version(2,4,0))
 436     {
 437         return m_fc.GetFilterIndex();
 438     }
 439     else
 440                 return wxGenericFileDialog::GetFilterIndex();
 441 }
 442
 443 #endif // wxUSE_FILEDLG &&  __WXGTK24__