def _show_subtitle_edit_dialog(self, iter_):
if iter_ != None:
# Pass a copy of the subtitle to the SubtitleDialog because
# it should not modify the original subtitle. The subtitle
# is then modified using SubtitleListTreeModel to reflect
# changes to the GUI.
subtitle = copy.copy(self._subtitle_list_model_new.get_item(iter_))
dlg = SubtitleDialog(self._dialog, subtitle, edit=True,
allow_edit_time=False)
res = dlg.run()
dlg.destroy_dialog()
if res == Gtk.ResponseType.OK:
self._subtitle_list_model_new.edit_subtitle(iter_, subtitle)
