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->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     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
 135 //-----------------------------------------------------------------------------
 136 // wxFileDialog
 137 //-----------------------------------------------------------------------------
 138
 139 IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxFileDialogBase)
 140
 141 BEGIN_EVENT_TABLE(wxFileDialog,wxFileDialogBase)
 142     EVT_BUTTON(wxID_OK, wxFileDialog::OnFakeOk)
 143 END_EVENT_TABLE()
 144
 145 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 146                            const wxString& defaultDir,
 147                            const wxString& defaultFileName,
 148                            const wxString& wildCard,
 149                            long style, const wxPoint& pos,
 150                            const wxSize& sz,
 151                            const wxString& name)
 152     : wxFileDialogBase()
 153 {
 154     parent = GetParentForModalDialog(parent);
 155
 156     if (!wxFileDialogBase::Create(parent, message, defaultDir, defaultFileName,
 157                                   wildCard, style, pos, sz, name))
 158     {
 159         return;
 160     }
 161
 162     if (!PreCreation(parent, pos, wxDefaultSize) ||
 163         !CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
 164                 wxDefaultValidator, wxT("filedialog")))
 165     {
 166         wxFAIL_MSG( wxT("wxFileDialog creation failed") );
 167         return;
 168     }
 169
 170     GtkFileChooserAction gtk_action;
 171     GtkWindow* gtk_parent = NULL;
 172     if (parent)
 173         gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
 174
 175     const gchar* ok_btn_stock;
 176     if ( style & wxFD_SAVE )
 177     {
 178         gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
 179         ok_btn_stock = GTK_STOCK_SAVE;
 180     }
 181     else
 182     {
 183         gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
 184         ok_btn_stock = GTK_STOCK_OPEN;
 185     }
 186
 187     m_widget = gtk_file_chooser_dialog_new(
 188                    wxGTK_CONV(m_message),
 189                    gtk_parent,
 190                    gtk_action,
 191                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 192                    ok_btn_stock, GTK_RESPONSE_ACCEPT,
 193                    NULL);
 194
 195     m_fc.SetWidget( GTK_FILE_CHOOSER(m_widget) );
 196
 197     gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
 198
 199     if ( style & wxFD_MULTIPLE )
 200         gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(m_widget), true);
 201
 202     // gtk_widget_hide_on_delete is used here to avoid that Gtk automatically
 203     // destroys the dialog when the user press ESC on the dialog: in that case
 204     // a second call to ShowModal() would result in a bunch of Gtk-CRITICAL
 205     // errors...
 206     g_signal_connect (G_OBJECT(m_widget),
 207                     "delete_event",
 208                     G_CALLBACK (gtk_widget_hide_on_delete),
 209                     (gpointer)this);
 210
 211     // local-only property could be set to false to allow non-local files to be
 212     // loaded. In that case get/set_uri(s) should be used instead of
 213     // get/set_filename(s) everywhere and the GtkFileChooserDialog should
 214     // probably also be created with a backend, e.g "gnome-vfs", "default", ...
 215     // (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
 216     // as the default - true:
 217     // gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
 218
 219     g_signal_connect (m_widget, "response",
 220         G_CALLBACK (gtk_filedialog_response_callback), this);
 221
 222     SetWildcard(wildCard);
 223
 224     // if defaultDir is specified it should contain the directory and
 225     // defaultFileName should contain the default name of the file, however if
 226     // directory is not given, defaultFileName contains both
 227     wxFileName fn;
 228     if ( defaultDir.empty() )
 229         fn.Assign(defaultFileName);
 230     else if ( !defaultFileName.empty() )
 231         fn.Assign(defaultDir, defaultFileName);
 232     else
 233         fn.AssignDir(defaultDir);
 234
 235     // set the initial file name and/or directory
 236     fn.MakeAbsolute(); // GTK+ needs absolute path
 237     const wxString dir = fn.GetPath();
 238     if ( !dir.empty() )
 239     {
 240         gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(m_widget),
 241                                             dir.fn_str());
 242     }
 243
 244     const wxString fname = fn.GetFullName();
 245     if ( style & wxFD_SAVE )
 246     {
 247         if ( !fname.empty() )
 248         {
 249             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget),
 250                                               fname.fn_str());
 251         }
 252
 253 #if GTK_CHECK_VERSION(2,7,3)
 254         if ((style & wxFD_OVERWRITE_PROMPT) && !gtk_check_version(2,7,3))
 255             gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(m_widget), TRUE);
 256 #endif
 257     }
 258     else // wxFD_OPEN
 259     {
 260         if ( !fname.empty() )
 261         {
 262             gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(m_widget),
 263                                           fn.GetFullPath().fn_str());
 264         }
 265     }
 266
 267     if ( style & wxFD_PREVIEW )
 268     {
 269         GtkWidget *previewImage = gtk_image_new();
 270
 271         gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(m_widget),
 272                                             previewImage);
 273         g_signal_connect(m_widget, "update-preview",
 274                          G_CALLBACK(gtk_filedialog_update_preview_callback),
 275                          previewImage);
 276     }
 277 }
 278
 279 void wxFileDialog::OnFakeOk(wxCommandEvent& WXUNUSED(event))
 280 {
 281     EndDialog(wxID_OK);
 282 }
 283
 284 int wxFileDialog::ShowModal()
 285 {
 286     return wxDialog::ShowModal();
 287 }
 288
 289 bool wxFileDialog::Show( bool show )
 290 {
 291     return wxDialog::Show( show );
 292 }
 293
 294 void wxFileDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
 295                              int WXUNUSED(width), int WXUNUSED(height),
 296                              int WXUNUSED(sizeFlags))
 297 {
 298 }
 299
 300 wxString wxFileDialog::GetPath() const
 301 {
 302     return m_fc.GetPath();
 303 }
 304
 305 void wxFileDialog::GetFilenames(wxArrayString& files) const
 306 {
 307     m_fc.GetFilenames( files );
 308 }
 309
 310 void wxFileDialog::GetPaths(wxArrayString& paths) const
 311 {
 312     m_fc.GetPaths( paths );
 313 }
 314
 315 void wxFileDialog::SetMessage(const wxString& message)
 316 {
 317     m_message = message;
 318     SetTitle(message);
 319 }
 320
 321 void wxFileDialog::SetPath(const wxString& path)
 322 {
 323     m_fc.SetPath( path );
 324 }
 325
 326 void wxFileDialog::SetDirectory(const wxString& dir)
 327 {
 328     m_fc.SetDirectory( dir );
 329 }
 330
 331 wxString wxFileDialog::GetDirectory() const
 332 {
 333     return m_fc.GetDirectory();
 334 }
 335
 336 void wxFileDialog::SetFilename(const wxString& name)
 337 {
 338     if (HasFdFlag(wxFD_SAVE))
 339         gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
 340     else
 341         SetPath(wxFileName(GetDirectory(), name).GetFullPath());
 342 }
 343
 344 wxString wxFileDialog::GetFilename() const
 345 {
 346     return m_fc.GetFilename();
 347 }
 348
 349 void wxFileDialog::SetWildcard(const wxString& wildCard)
 350 {
 351     m_fc.SetWildcard( wildCard );
 352 }
 353
 354 void wxFileDialog::SetFilterIndex(int filterIndex)
 355 {
 356
 357     m_fc.SetFilterIndex( filterIndex);
 358 }
 359
 360 int wxFileDialog::GetFilterIndex() const
 361 {
 362     return m_fc.GetFilterIndex();
 363 }
 364
 365 #endif // wxUSE_FILEDLG