React Google Map InfoWindow showing all the info when I click on a single Mark

Question

For some reason when I click on a single Marker all the InfoWindow shows up. I expected one InfoWindow show up when I click on one single Marker. Can someone explain why all the InfoWindow in all the Marker shows up? So when I close it InfoWindow closes too.

Expected behavior is InfoWindow open when I click on targeted Mark.

class VenuesMap extends Component {
  constructor(props) {
    super(props);

    this.state = {
      isOpen: false,
    };
  }

  handleToggleOpen = () => {
    this.setState({
      isOpen: true,
    });
  };

  handleToggleClose = () => {
    this.setState({
      isOpen: false,
    });
  };

  render() {
    const venues = this.props.venues;

    let markers;
    let userMarkers = (
      <Marker
        position={{
          lat: Number(latCurrentLocation),
          lng: Number(lngCurrentLocation),
        }}
      />
    );
    if (venues !== null) {
      markers = venues.map((location, i) => {
        const lat = location.venue.location.lat;
        const lng = location.venue.location.lng;
        const index = i + 1;
        return (
          <Marker
            key={i}
            position={{ lat: lat, lng: lng }}
            label={index.toString()}
            onClick={() => this.handleToggleOpen()}
          >
            {this.state.isOpen && (
              <InfoWindow onCloseClick={() => this.handleToggleClose()}>
                <span>Something</span>
              </InfoWindow>
            )}
          </Marker>
        );
      });
    }

    const MapWithAMarker = withGoogleMap(props => (
      <GoogleMap
        defaultZoom={this.state.zoom}
        defaultCenter={{
          lat: Number(latCurrentLocation) || 40.7128,
          lng: Number(lngCurrentLocation) || -74.006,
        }}
      >
        {markers}
        {userMarkers}
      </GoogleMap>
    ));

    const googleMap = (
      <MapWithAMarker
        containerElement={
          <div style={{ height: this.props.containerElement }} />
        }
        mapElement={<div style={{ height: this.props.mapElement }} />}
      />
    );

    return <div>{googleMap}</div>;
  }
}

Answer 1

What you need is a separate isOpen state for each info window, otherwise all of them will open if isOpen is true.

Option 1: You can make a component <MarkerWithInfoWindow>, inside which you can maintain it's own isOpen state. This will still allow multiple of them open at once tho, by clicking one by one.

Option 2: If you want to keep the structure same (so you can close one if another opens), you can store an openInfoWindowMarkerId in state, something like this

this.state = {
        openInfoWindowMarkerId: ''
    }

then you can do something like

handleToggleOpen = (markerId) => {
    this.setState({
        openInfoWindowMarkerId: markerId
    });
}

and you can call it like this

<Marker
    key={i}
    position={{ lat: lat, lng: lng}}
    label={index.toString()}
    onClick={() => this.handleToggleOpen(i)} // marker ID is the key here. 
>