number-munchers/controllers/board/titlebar.controller.js

import * as TitlebarActions from '../../actions/board/titlebar.actions';
import SubtractionModel from '../../models/subtraction.model';

let dispatch;

const TitlebarCtrl = {
    setDispatch: d => dispatch = d,

    setTitle: (level) => {
        const title = SubtractionModel.getTitle(level);
        dispatch(TitlebarActions.update(title));
    }
};

export default TitlebarCtrl;