Parts of a larger project with Google Map's Drawing Manager working.

Customising it for a new project but wanted to keep the original code as it works.

Google Maps Note Links:

• complete drawing tomchentw/react-google-maps#796

• click-me popup http://google-map-react.github.io/google-map-react/map/events

• react leaflet https://react-leaflet.js.org/en/

• adding marker https://stackoverflow.com/questions/41405343/adding-marker-to-google-maps-in-google-map-react

• medium article https://medium.com/front-end-hacking/simplified-google-maps-api-in-a-react-app-46981441d2c9

• medium source https://github.com/mthorry/simple-react-maps/tree/master/src

• limit to 1 annotation / polygon https://stackoverflow.com/questions/14166546/google-maps-drawing-manager-limit-to-1-polygon

• https://github.com/tomchentw/react-google-maps/blob/master/src/components/places/SearchBox.md

• https://gist.github.com/johnantoni/d68a2f71ef05c133867927f3992ec56e