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

import * as OptionsActions from '../../actions/options/options.actions';
import ModeCtrl from '../mode.controller';
import GridCtrl from '../board/grid.controller';
import TitlebarCtrl from '../board/titlebar.controller';

import MultiplesModel from '../../models/multiples.model';
import FactorsModel from '../../models/factors.model';
import AdditionModel from '../../models/addition.model';
import SubtractionModel from '../../models/subtraction.model';

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 || e.keyCode === 13) {
            let model;
            switch (selected) {
                case 0:
                    model = MultiplesModel;
                    break;
                case 1:
                    model = FactorsModel;
                    break;
                case 2:
                    model = AdditionModel;
                    break;
                case 3:
                    model = SubtractionModel;
                    break;
            }

            GridCtrl.setModel(model);
            TitlebarCtrl.setModel(model);
            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;