@liquidautumn/react-google-maps/src/creators/DirectionsRendererCreator.js

React.js Google Maps integration component

import {
  default as React,
  PropTypes,
  Component,
  Children,
} from "react";

import { default as DirectionsRendererEventList } from "../eventLists/DirectionsRendererEventList";
import { default as eventHandlerCreator } from "../utils/eventHandlerCreator";
import { default as defaultPropsCreator } from "../utils/defaultPropsCreator";
import { default as composeOptions } from "../utils/composeOptions";
import { default as componentLifecycleDecorator } from "../utils/componentLifecycleDecorator";

import { default as GoogleMapHolder } from "./GoogleMapHolder";

export const directionsRendererControlledPropTypes = {
// NOTICE!!!!!!
//
// Only expose those with getters & setters in the table as controlled props.
//
// [].map.call($0.querySelectorAll("tr>td>code"), function(it){ return it.textContent; }).filter(function(it){ return it.match(/^set/) && !it.match(/^setMap/); })
//
// https://developers.google.com/maps/documentation/javascript/3.exp/reference#DirectionsRenderer
  directions: PropTypes.any,
  options: PropTypes.object,
  panel: PropTypes.object,
  routeIndex: PropTypes.number,
};

export const directionsRendererDefaultPropTypes = defaultPropsCreator(directionsRendererControlledPropTypes);

const directionsRendererUpdaters = {
  directions(directions, component) { component.getDirectionsRenderer().setDirections(directions); },
  options(options, component) { component.getDirectionsRenderer().setOptions(options); },
  panel(panel, component) { component.getDirectionsRenderer().setPanel(panel); },
  routeIndex(routeIndex, component) { component.getDirectionsRenderer().setRouteIndex(routeIndex); },
};

const { eventPropTypes, registerEvents } = eventHandlerCreator(DirectionsRendererEventList);

export const directionsRendererEventPropTypes = eventPropTypes;

@componentLifecycleDecorator({
  registerEvents,
  instanceMethodName: `getDirectionsRenderer`,
  updaters: directionsRendererUpdaters,
})
export default class DirectionsRendererCreator extends Component {

  static propTypes = {
    mapHolderRef: PropTypes.instanceOf(GoogleMapHolder).isRequired,
    directionsRenderer: PropTypes.object.isRequired,
  }

  static _createDirectionsRenderer(directionsRendererProps) {
    const { mapHolderRef } = directionsRendererProps;
    // https://developers.google.com/maps/documentation/javascript/3.exp/reference#DirectionsRenderer
    const directionsRenderer = new google.maps.DirectionsRenderer(composeOptions(directionsRendererProps, directionsRendererControlledPropTypes));

    directionsRenderer.setMap(mapHolderRef.getMap());

    return directionsRenderer;
  }

  getDirectionsRenderer() {
    return this.props.directionsRenderer;
  }

  render() {
    const { children } = this.props;

    if (Children.count(children) > 0) {
      // TODO: take a look at DirectionsRendererOptions#infoWindow and DirectionsRendererOptions#markerOptions ?
      return (
        <div>{children}</div>
      );
    } else {
      return (<noscript />);
    }
  }
}