def get_save_filename(self, parent, filter_, default_name=None):
dialog = QFileDialog(parent, directory=self._get_default_directory(), filter=filter_)
if default_name:
dialog.selectFile(default_name)
dialog.setModal(True)
dialog.setAcceptMode(QFileDialog.AcceptSave)
if dialog.exec_() != QFileDialog.Accepted or not dialog.selectedFiles():
return None
return dialog.selectedFiles()[0]
