const createHTMLMarker = (google) => { class HTMLMarker extends google.maps.OverlayView { constructor({ position, map, className, anchor = { x: 0, y: 0, }, }) { super(); this.anchor = anchor; this.subscriptions = []; this.latLng = new google.maps.LatLng(position); this.element = document.createElement('div'); this.element.className = className; this.element.style.position = 'absolute'; // Force the "white-space" of the element will avoid the // content to collapse when we move the map from center this.element.style.whiteSpace = 'nowrap'; this.setMap(map); } onAdd() { if (this.getPanes()) { this.getPanes().overlayMouseTarget.appendChild(this.element); } } draw() { if (this.getProjection()) { const position = this.getProjection().fromLatLngToDivPixel(this.latLng); const offsetX = this.anchor.x + this.element.offsetWidth / 2; const offsetY = this.anchor.y + this.element.offsetHeight; this.element.style.left = `${Math.round(position.x - offsetX)}px`; this.element.style.top = `${Math.round(position.y - offsetY)}px`; // Markers to the south are in front of markers to the north // This is the default behaviour of Google Maps this.element.style.zIndex = parseInt(this.element.style.top, 10); } } onRemove() { if (this.element && this.element.parentNode) { this.element.parentNode.removeChild(this.element); this.subscriptions.forEach((subscription) => subscription.remove()); delete this.element; this.subscriptions = []; } } addListener(eventName, listener) { const subscription = { remove: () => { this.element.removeEventListener(eventName, listener); this.subscriptions = this.subscriptions.filter( (_) => _ !== subscription ); }, }; this.element.addEventListener(eventName, listener); this.subscriptions = this.subscriptions.concat(subscription); return subscription; } getPosition() { return this.latLng; } } return HTMLMarker; }; export default createHTMLMarker;