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 #ifdef __UNIX__
  26 #include <unistd.h> // chdir
  27 #endif
  28
  29 #include "wx/filename.h" // wxFilename
  30 #include "wx/tokenzr.h" // wxStringTokenizer
  31 #include "wx/filefn.h" // ::wxGetCwd
  32 #include "wx/testing.h"
  33
  34 extern "C"
  35 {
  36 static void gtk_filedialog_response_callback(GtkWidget * WXUNUSED(w),
  37                                              gint response,
  38                                              wxFileDialog *dialog)
  39 {
  40     if (response == GTK_RESPONSE_ACCEPT)
  41         dialog->GTKOnAccept();
  42     else    // GTK_RESPONSE_CANCEL or GTK_RESPONSE_NONE
  43         dialog->GTKOnCancel();
  44 }
  45
  46 static void gtk_filedialog_update_preview_callback(GtkFileChooser *chooser,
  47                                                    gpointer user_data)
  48 {
  49     GtkWidget *preview = GTK_WIDGET(user_data);
  50
  51     wxGtkString filename(gtk_file_chooser_get_preview_filename(chooser));
  52
  53     if ( !filename )
  54         return;
  55
  56     GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
  57     gboolean have_preview = pixbuf != NULL;
  58
  59     gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
  60     if ( pixbuf )
  61         g_object_unref (pixbuf);
  62
  63     gtk_file_chooser_set_preview_widget_active(chooser, have_preview);
  64 }
  65
  66 } // extern "C"
  67
  68 void wxFileDialog::AddChildGTK(wxWindowGTK* child)
  69 {
  70     // allow dialog to be resized smaller horizontally
  71     gtk_widget_set_size_request(
  72         child->m_widget, child->GetMinWidth(), child->m_height);
  73
  74     gtk_file_chooser_set_extra_widget(
  75         GTK_FILE_CHOOSER(m_widget), child->m_widget);
  76 }
  77
  78 //-----------------------------------------------------------------------------
  79 // wxFileDialog
  80 //-----------------------------------------------------------------------------
  81
  82 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxFileDialogBase)
  83
  84 BEGIN_EVENT_TABLE(wxFileDialog,wxFileDialogBase)
  85     EVT_SIZE(wxFileDialog::OnSize)
  86 END_EVENT_TABLE()
  87
  88 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
  89                            const wxString& defaultDir,
  90                            const wxString& defaultFileName,
  91                            const wxString& wildCard,
  92                            long style, const wxPoint& pos,
  93                            const wxSize& sz,
  94                            const wxString& name)
  95     : wxFileDialogBase()
  96 {
  97     Create(parent, message, defaultDir, defaultFileName, wildCard, style, pos, sz, name);
  98 }
  99
 100 bool wxFileDialog::Create(wxWindow *parent, const wxString& message,
 101                            const wxString& defaultDir,
 102                            const wxString& defaultFileName,
 103                            const wxString& wildCard,
 104                            long style, const wxPoint& pos,
 105                            const wxSize& sz,
 106                            const wxString& name)
 107 {
 108     parent = GetParentForModalDialog(parent, style);
 109
 110     if (!wxFileDialogBase::Create(parent, message, defaultDir, defaultFileName,
 111                                   wildCard, style, pos, sz, name))
 112     {
 113         return false;
 114     }
 115
 116     if (!PreCreation(parent, pos, wxDefaultSize) ||
 117         !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
 118                 wxDefaultValidator, wxT("filedialog")))
 119     {
 120         wxFAIL_MSG( wxT("wxFileDialog creation failed") );
 121         return false;
 122     }
 123
 124     GtkFileChooserAction gtk_action;
 125     GtkWindow* gtk_parent = NULL;
 126     if (parent)
 127         gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
 128
 129     const gchar* ok_btn_stock;
 130     if ( style & wxFD_SAVE )
 131     {
 132         gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
 133         ok_btn_stock = GTK_STOCK_SAVE;
 134     }
 135     else
 136     {
 137         gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
 138         ok_btn_stock = GTK_STOCK_OPEN;
 139     }
 140
 141     m_widget = gtk_file_chooser_dialog_new(
 142                    wxGTK_CONV(m_message),
 143                    gtk_parent,
 144                    gtk_action,
 145                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 146                    ok_btn_stock, GTK_RESPONSE_ACCEPT,
 147                    NULL);
 148     g_object_ref(m_widget);
 149     GtkFileChooser* file_chooser = GTK_FILE_CHOOSER(m_widget);
 150
 151     m_fc.SetWidget(file_chooser);
 152
 153     gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
 154
 155     if ( style & wxFD_MULTIPLE )
 156         gtk_file_chooser_set_select_multiple(file_chooser, true);
 157
 158     // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically
 159     // destroys the dialog when the user press ESC on the dialog: in that case
 160     // a second call to ShowModal() would result in a bunch of Gtk-CRITICAL
 161     // errors...
 162     g_signal_connect(m_widget,
 163                     "delete_event",
 164                     G_CALLBACK (gtk_widget_hide_on_delete),
 165                     this);
 166
 167     // local-only property could be set to false to allow non-local files to be
 168     // loaded. In that case get/set_uri(s) should be used instead of
 169     // get/set_filename(s) everywhere and the GtkFileChooserDialog should
 170     // probably also be created with a backend, e.g. "gnome-vfs", "default", ...
 171     // (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
 172     // as the default - true:
 173     // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
 174
 175     g_signal_connect (m_widget, "response",
 176         G_CALLBACK (gtk_filedialog_response_callback), this);
 177
 178
 179     // deal with extensions/filters
 180     SetWildcard(wildCard);
 181
 182     wxString defaultFileNameWithExt = defaultFileName;
 183     if ( !wildCard.empty() && !defaultFileName.empty() &&
 184             !wxFileName(defaultFileName).HasExt() )
 185     {
 186         // append the default extension to the initial file name: GTK won't do
 187         // it for us by default (unlike e.g. MSW)
 188         const wxString defaultExt = m_fc.GetCurrentWildCard().AfterFirst('.');
 189         if ( defaultExt.find_first_of("?*") == wxString::npos )
 190             defaultFileNameWithExt += "." + defaultExt;
 191     }
 192
 193
 194     // if defaultDir is specified it should contain the directory and
 195     // defaultFileName should contain the default name of the file, however if
 196     // directory is not given, defaultFileName contains both
 197     wxFileName fn;
 198     if ( defaultDir.empty() )
 199         fn.Assign(defaultFileNameWithExt);
 200     else if ( !defaultFileNameWithExt.empty() )
 201         fn.Assign(defaultDir, defaultFileNameWithExt);
 202     else
 203         fn.AssignDir(defaultDir);
 204
 205     // set the initial file name and/or directory
 206     fn.MakeAbsolute(); // GTK+ needs absolute path
 207     const wxString dir = fn.GetPath();
 208     if ( !dir.empty() )
 209     {
 210         gtk_file_chooser_set_current_folder(file_chooser, wxGTK_CONV_FN(dir));
 211     }
 212
 213     const wxString fname = fn.GetFullName();
 214     if ( style & wxFD_SAVE )
 215     {
 216         if ( !fname.empty() )
 217         {
 218             gtk_file_chooser_set_current_name(file_chooser, wxGTK_CONV_FN(fname));
 219         }
 220
 221 #if GTK_CHECK_VERSION(2,7,3)
 222         if ((style & wxFD_OVERWRITE_PROMPT)
 223 #ifndef __WXGTK3__
 224             && gtk_check_version(2,7,3) == NULL
 225 #endif
 226             )
 227         {
 228             gtk_file_chooser_set_do_overwrite_confirmation(file_chooser, true);
 229         }
 230 #endif
 231     }
 232     else // wxFD_OPEN
 233     {
 234         if ( !fname.empty() )
 235         {
 236             gtk_file_chooser_set_filename(file_chooser,
 237                                           wxGTK_CONV_FN(fn.GetFullPath()));
 238         }
 239     }
 240
 241     if ( style & wxFD_PREVIEW )
 242     {
 243         GtkWidget *previewImage = gtk_image_new();
 244
 245         gtk_file_chooser_set_preview_widget(file_chooser, previewImage);
 246         g_signal_connect(m_widget, "update-preview",
 247                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 248                          previewImage);
 249     }
 250
 251     return true;
 252 }
 253
 254 wxFileDialog::~wxFileDialog()
 255 {
 256     if (m_extraControl)
 257     {
 258         // get chooser to drop its reference right now, allowing wxWindow dtor
 259         // to verify that ref count drops to zero
 260         gtk_file_chooser_set_extra_widget(
 261             GTK_FILE_CHOOSER(m_widget), NULL);
 262     }
 263 }
 264 void wxFileDialog::GTKOnAccept()
 265 {
 266     int style = GetWindowStyle();
 267     wxString filename = m_fc.GetPath();
 268     m_selectedDirectory = m_fc.GetDirectory();
 269
 270     // gtk version numbers must be identical with the one in ctor (that calls set_do_overwrite_confirmation)
 271 #ifndef __WXGTK3__
 272 #if GTK_CHECK_VERSION(2,7,3)
 273     if (gtk_check_version(2, 7, 3) != NULL)
 274 #endif
 275     {
 276         if ((style & wxFD_SAVE) && (style & wxFD_OVERWRITE_PROMPT))
 277         {
 278             if ( g_file_test(filename.utf8_str(), G_FILE_TEST_EXISTS) )
 279             {
 280                 wxString msg;
 281
 282                 msg.Printf(
 283                     _("File '%s' already exists, do you really want to overwrite it?"),
 284                     wxString::FromUTF8(filename.utf8_str()));
 285
 286                 wxMessageDialog dlg(this, msg, _("Confirm"),
 287                                    wxYES_NO | wxICON_QUESTION);
 288                 if (dlg.ShowModal() != wxID_YES)
 289                     return;
 290             }
 291         }
 292     }
 293 #endif
 294
 295     if (style & wxFD_FILE_MUST_EXIST)
 296     {
 297         if ( !g_file_test(filename.utf8_str(), G_FILE_TEST_EXISTS) )
 298         {
 299             wxMessageDialog dlg( this, _("Please choose an existing file."),
 300                                  _("Error"), wxOK| wxICON_ERROR);
 301             dlg.ShowModal();
 302             return;
 303         }
 304     }
 305
 306     // change to the directory where the user went if asked
 307     if (style & wxFD_CHANGE_DIR)
 308     {
 309         // Use chdir to not care about filename encodings
 310         wxGtkString folder(g_path_get_dirname(filename.utf8_str()));
 311         chdir(folder);
 312     }
 313     EndDialog(wxID_OK);
 314 }
 315
 316 void wxFileDialog::GTKOnCancel()
 317 {
 318     EndDialog(wxID_CANCEL);
 319 }
 320
 321 int wxFileDialog::ShowModal()
 322 {
 323     WX_TESTING_SHOW_MODAL_HOOK();
 324
 325     CreateExtraControl();
 326
 327     return wxDialog::ShowModal();
 328 }
 329
 330 void wxFileDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
 331                              int WXUNUSED(width), int WXUNUSED(height),
 332                              int WXUNUSED(sizeFlags))
 333 {
 334 }
 335
 336 void wxFileDialog::OnSize(wxSizeEvent&)
 337 {
 338     // avoid calling DoLayout(), which will set the (wrong) size of
 339     // m_extraControl, its size is managed by GtkFileChooser
 340 }
 341
 342 wxString wxFileDialog::GetPath() const
 343 {
 344     return m_fc.GetPath();
 345 }
 346
 347 void wxFileDialog::GetFilenames(wxArrayString& files) const
 348 {
 349     m_fc.GetFilenames( files );
 350 }
 351
 352 void wxFileDialog::GetPaths(wxArrayString& paths) const
 353 {
 354     m_fc.GetPaths( paths );
 355 }
 356
 357 void wxFileDialog::SetMessage(const wxString& message)
 358 {
 359     m_message = message;
 360     SetTitle(message);
 361 }
 362
 363 void wxFileDialog::SetPath(const wxString& path)
 364 {
 365     wxFileDialogBase::SetPath(path);
 366
 367     // Don't do anything if no path is specified, in particular don't set the
 368     // path to m_dir below as this would result in opening the dialog in the
 369     // parent directory of this one instead of m_dir itself.
 370     if ( path.empty() )
 371         return;
 372
 373     // we need an absolute path for GTK native chooser so ensure that we have
 374     // it: use the initial directory if it was set or just CWD otherwise (this
 375     // is the default behaviour if m_dir is empty)
 376     wxFileName fn(path);
 377     fn.MakeAbsolute(m_dir);
 378     m_fc.SetPath(fn.GetFullPath());
 379 }
 380
 381 void wxFileDialog::SetDirectory(const wxString& dir)
 382 {
 383     wxFileDialogBase::SetDirectory(dir);
 384
 385     m_fc.SetDirectory(dir);
 386     m_selectedDirectory = dir;
 387 }
 388
 389 wxString wxFileDialog::GetDirectory() const
 390 {
 391     return m_selectedDirectory;
 392 }
 393
 394 void wxFileDialog::SetFilename(const wxString& name)
 395 {
 396     wxFileDialogBase::SetFilename(name);
 397
 398     if (HasFdFlag(wxFD_SAVE))
 399     {
 400         gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 401     }
 402
 403     else
 404     {
 405         wxString path( GetDirectory() );
 406         if (path.empty())
 407         {
 408             // SetPath() fires an assert if fed other than filepaths
 409             return;
 410         }
 411         SetPath(wxFileName(path, name).GetFullPath());
 412     }
 413 }
 414
 415 wxString wxFileDialog::GetFilename() const
 416 {
 417     wxString currentFilename( m_fc.GetFilename() );
 418     if (currentFilename.empty())
 419     {
 420         // m_fc.GetFilename() will return empty until the dialog has been shown
 421         // in which case use any previously provided value
 422         currentFilename = m_fileName;
 423     }
 424     return currentFilename;
 425 }
 426
 427 void wxFileDialog::SetWildcard(const wxString& wildCard)
 428 {
 429     wxFileDialogBase::SetWildcard(wildCard);
 430     m_fc.SetWildcard( GetWildcard() );
 431 }
 432
 433 void wxFileDialog::SetFilterIndex(int filterIndex)
 434 {
 435     m_fc.SetFilterIndex( filterIndex);
 436 }
 437
 438 int wxFileDialog::GetFilterIndex() const
 439 {
 440     return m_fc.GetFilterIndex();
 441 }
 442
 443 #endif // wxUSE_FILEDLG