number-munchers/controllers/options/options.controller.js

import * as OptionsActions from '../../actions/options/options.actions';
import ModeCtrl from '../mode.controller';

let dispatch;
const values = ['Multiples', 'Factors', 'Addition', 'Subtraction'];
let selected = 0;

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

    getValues: () => values,

    update() {
        dispatch(OptionsActions.update(selected));
    },

    keyListener(e) {
        if (e.keyCode === 32) {
            let model =
            // switch (selected) {
            //     case 0:
            // }
            ModeCtrl.board();
        }
        else if (e.keyCode === 38) {
            selected--;

            if (selected === -1) {
                selected = values.length - 1;
            }

            this.update();
        }
        else if (e.keyCode === 40) {
            selected++;

            if (selected === values.length) {
                selected = 0;
            }

            this.update();
        }
    }
};

export default OptionsCtrl;