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
  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->HandleWindowEvent(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->HandleWindowEvent(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     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 }
 131
 132 } // extern "C"
 133
 134 static void wxInsertChildInFileDialog(wxWindow* WXUNUSED(parent),
 135                                       wxWindow* WXUNUSED(child))
 136 {
 137 }
 138
 139
 140 //-----------------------------------------------------------------------------
 141 // wxFileDialog
 142 //-----------------------------------------------------------------------------
 143
 144 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxFileDialogBase)
 145
 146 BEGIN_EVENT_TABLE(wxFileDialog,wxFileDialogBase)
 147     EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
 148     EVT_SIZE(wxFileDialog::OnSize)
 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     : wxFileDialogBase()
 159 {
 160     m_insertCallback = wxInsertChildInFileDialog;
 161     parent = GetParentForModalDialog(parent);
 162
 163     if (!wxFileDialogBase::Create(parent, message, defaultDir, defaultFileName,
 164                                   wildCard, style, pos, sz, name))
 165     {
 166         return;
 167     }
 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 ( style & wxFD_PREVIEW )
 275     {
 276         GtkWidget *previewImage = gtk_image_new();
 277
 278         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 279                                             previewImage);
 280         g_signal_connect(m_widget, "update-preview",
 281                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 282                          previewImage);
 283     }
 284 }
 285
 286
 287 void wxFileDialog::OnFakeOk(wxCommandEvent& WXUNUSED(event))
 288 {
 289     EndDialog(wxID_OK);
 290 }
 291
 292 int wxFileDialog::ShowModal()
 293 {
 294     if (CreateExtraControl())
 295     {
 296         GtkWidget *control = m_extraControl->m_widget;
 297
 298         wxASSERT(control->parent == NULL);
 299
 300         gtk_widget_show(control);
 301         gtk_file_chooser_set_extra_widget(GTK_FILE_CHOOSER(m_widget), control);
 302     }
 303
 304     return wxDialog::ShowModal();
 305 }
 306
 307 void wxFileDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
 308                              int WXUNUSED(width), int WXUNUSED(height),
 309                              int WXUNUSED(sizeFlags))
 310 {
 311 }
 312
 313 void wxFileDialog::OnSize(wxSizeEvent&)
 314 {
 315     // avoid calling DoLayout(), which will set the (wrong) size of
 316     // m_extraControl, its size is managed by GtkFileChooser
 317 }
 318
 319 wxString wxFileDialog::GetPath() const
 320 {
 321     return m_fc.GetPath();
 322 }
 323
 324 void wxFileDialog::GetFilenames(wxArrayString& files) const
 325 {
 326     m_fc.GetFilenames( files );
 327 }
 328
 329 void wxFileDialog::GetPaths(wxArrayString& paths) const
 330 {
 331     m_fc.GetPaths( paths );
 332 }
 333
 334 void wxFileDialog::SetMessage(const wxString& message)
 335 {
 336     m_message = message;
 337     SetTitle(message);
 338 }
 339
 340 void wxFileDialog::SetPath(const wxString& path)
 341 {
 342     m_fc.SetPath( path );
 343 }
 344
 345 void wxFileDialog::SetDirectory(const wxString& dir)
 346 {
 347     m_fc.SetDirectory( dir );
 348 }
 349
 350 wxString wxFileDialog::GetDirectory() const
 351 {
 352     return m_fc.GetDirectory();
 353 }
 354
 355 void wxFileDialog::SetFilename(const wxString& name)
 356 {
 357     if (HasFdFlag(wxFD_SAVE))
 358         gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 359     else
 360         SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 361 }
 362
 363 wxString wxFileDialog::GetFilename() const
 364 {
 365     return m_fc.GetFilename();
 366 }
 367
 368 void wxFileDialog::SetWildcard(const wxString& wildCard)
 369 {
 370     m_fc.SetWildcard( wildCard );
 371 }
 372
 373 void wxFileDialog::SetFilterIndex(int filterIndex)
 374 {
 375
 376     m_fc.SetFilterIndex( filterIndex);
 377 }
 378
 379 int wxFileDialog::GetFilterIndex() const
 380 {
 381     return m_fc.GetFilterIndex();
 382 }
 383
 384 #endif // wxUSE_FILEDLG