connect(&DolphinNewFileMenuObserver::instance(), &DolphinNewFileMenuObserver::errorMessage,
this, &DolphinMainWindow::showErrorMessage);
KIO::FileUndoManager* undoManager = KIO::FileUndoManager::self();
undoManager->setUiInterface(new UndoUiInterface());
connect(&DolphinNewFileMenuObserver::instance(), &DolphinNewFileMenuObserver::errorMessage,
this, &DolphinMainWindow::showErrorMessage);
KIO::FileUndoManager* undoManager = KIO::FileUndoManager::self();
undoManager->setUiInterface(new UndoUiInterface());