protected void configureMap() {
    MapOptions mapOptions = new MapOptions();

    mapOptions.center(new LatLong(47.6097, -122.3331))
            .mapType(MapTypeIdEnum.ROADMAP)
            .zoom(9);
    map = googleMapView.createMap(mapOptions, false);

    map.addMouseEventHandler(UIEventType.click, (GMapMouseEvent event) -> {
        LatLong latLong = event.getLatLong();
        latitudeLabel.setText(formatter.format(latLong.getLatitude()));
        longitudeLabel.setText(formatter.format(latLong.getLongitude()));
    });

}
 

/**
 * Adds a handler for a mouse type event on the map.
 *
 * @param obj The object that the event should be registered on.
 * @param type Type of the event to register against.
 * @param h Handler that will be called when the event occurs.
 */
public void addUIEventHandler(JavascriptObject obj, UIEventType type, UIEventHandler h) {
    String key = registerEventHandler(h);
    String mcall = "google.maps.event.addListener(" + obj.getVariableName() + ", '" + type.name() + "', "
            + "function(event) {document.jsHandlers.handleUIEvent('" + key + "', event);});";//.latLng
    //System.out.println("addUIEventHandler mcall: " + mcall);
    runtime.execute(mcall);
}
 

public void addMarkers(Collection<Marker> col, UIEventType type, Callback<Marker, UIEventHandler> h) {
    if (markers == null) {
        markers = new HashSet<>(col);
    } else {
        markers.addAll(col);
    }
    col.forEach((m) -> {
        m.setMap(this);
        addUIEventHandler(m, type, h.call(m));
    });
}
 

protected void addUIHandler(JavascriptObject obj, UIEventType type, GFXEventHandler h) {
    String key = registerEventHandler(h);
    String mcall = "google.maps.event.addListener(" + obj.getVariableName() + ", '" + type.name() + "', "
            + "function(event) {document.jsHandlers.handleUIEvent('" + key + "', event);});";//.latLng
    //System.out.println("addUIEventHandler mcall: " + mcall);
    runtime.execute(mcall);
}
 

/**
 * Adds a handler for a mouse type event on the map.
 *
 * @param type Type of the event to register against.
 * @param h Handler that will be called when the event occurs.
 */
public void addUIEventHandler(UIEventType type, UIEventHandler h) {
    this.addUIEventHandler(this, type, h);
}
 

/**
 * Adds a handler for a mouse type event on the map.
 *
 * @param type Type of the event to register against.
 * @param h Handler that will be called when the event occurs.
 */
public void addUIEventHandler(UIEventType type, UIEventHandler h) {
    this.addUIEventHandler(this, type, h);
}
 

/**
 * Adds a handler for a mouse type event on the map.
 *
 * @param obj The object that the event should be registered on.
 * @param type Type of the event to register against.
 * @param h Handler that will be called when the event occurs.
 */
public void addUIEventHandler(JavascriptObject obj, UIEventType type, UIEventHandler h) {
    addUIHandler(obj, type, h);
}
 

/**
 * Adds a handler for a mouse type event and returns an object that does not require interaction with
 * the underlying Javascript API.
 * 
 * @param type The type of event to listen for
 * @param h The MouseEventHandler that will handle the event.
 */
public void addMouseEventHandler(UIEventType type, MouseEventHandler h) {
    addUIHandler(this, type, h);
}