Marks view for repaint. :qtdoc:`Re-implemented<QAbstractItemView.dataChanged>`

def dataChanged(self, topleft, bottomright):
        """Marks view for repaint. :qtdoc:`Re-implemented<QAbstractItemView.dataChanged>`"""
        self._viewIsDirty = True
        super(StimulusView, self).dataChanged(topleft, bottomright)