Show map marker for property location

html/static/js/map-locator-ro.js

@@ -0,0 +1,125 @@
+// A map that can be used to locate a single point by setting its location explicitly
+// or by allowing the user to move a marker.
+class MapLocatorReadOnly extends HTMLElement {
+	constructor() {
+		super();
+
+		// Create a shadow DOM
+		this.attachShadow({ mode: "open" });
+
+		// Initial render
+		this.render();
+
+		// markers shown on the map. Should be none or 1, generally.
+		this._markers = [];
+	}
+
+	// Lifecycle: when element is added to the DOM
+	connectedCallback() {
+		// Initialize the map when the element is added to the DOM
+		setTimeout(() => this._initializeMap(), 0);
+	}
+
+	disconnectedCallback() {
+		if (this._map) {
+			this._map.remove();
+		}
+	}
+
+	_initializeMap() {
+		console.log("Setting up the locator read-only...");
+		const marker_str = this.getAttribute("marker");
+		const marker = JSON.parse(marker_str);
+
+		const mapElement = this.shadowRoot.querySelector("#map");
+		this._map = new maplibregl.Map({
+			container: mapElement,
+			center: marker.coordinates,
+			style: "https://tiles.stadiamaps.com/styles/alidade_smooth.json",
+			zoom: 16,
+		});
+		this._map.on("load", () => {
+			console.log("map locator read-only loaded");
+			const m = new maplibregl.Marker({
+				color: "#FF0000",
+				draggable: true,
+			})
+				.setLngLat(marker.coordinates)
+				.addTo(this._map);
+			this.dispatchEvent(markerDraggedEvent);
+			this.dispatchEvent(
+				new CustomEvent("load", {
+					bubbles: true,
+					composed: true, // Allows event to cross shadow DOM boundary
+					detail: {
+						map: this,
+					},
+				}),
+			);
+		});
+		this._map.on("zoomend", (e) => {
+			this.dispatchEvent(
+				new CustomEvent("zoomend", {
+					bubbles: true,
+					composed: true,
+					detail: e,
+				}),
+			);
+		});
+	}
+
+	// Initial render of component
+	render() {
+		this.shadowRoot.innerHTML = `
+			<style>
+				@import url("//unpkg.com/maplibre-gl@5.0.1/dist/maplibre-gl.css");
+				#map {
+					height: 100%;
+					width:100%;
+				}
+				#map img {
+					max-width: none;
+					min-width: 0px;
+					height: auto;
+				}
+			</style>
+			
+			<div id="map"></div>
+		`;
+	}
+
+	GetZoom() {
+		return this._map.getZoom();
+	}
+
+	JumpTo(args) {
+		this._map.jumpTo(args);
+	}
+
+	PanTo(coords, options) {
+		this._map.panTo(coords, options);
+	}
+
+	SetMarker(coords) {
+		console.log("Setting map marker", coords);
+		this._markers.forEach((marker) => marker.remove());
+
+		const marker = new maplibregl.Marker({
+			color: "#FF0000",
+			draggable: true,
+		})
+			.setLngLat(coords)
+			.addTo(this._map);
+		marker.on("dragend", (e) => {
+			const markerDraggedEvent = new CustomEvent("markerdragend", {
+				detail: {
+					marker: marker,
+				},
+			});
+			this.dispatchEvent(markerDraggedEvent);
+		});
+		this._markers = [marker];
+	}
+}
+
+customElements.define("map-locator-ro", MapLocatorReadOnly);

html/template/rmo/mailer/root.html

@@ -6,7 +6,7 @@
 		type="text/javascript"
 		src="//unpkg.com/maplibre-gl@5.0.1/dist/maplibre-gl.js"
 	></script>
-	<script src="/static/js/map-locator.js"></script>
+	<script src="/static/js/map-locator-ro.js"></script>
 	<style>
 		body {
 			background-color: #f8f9fa;
@@ -94,7 +94,10 @@
 
 			<!-- Map View -->
 			<div class="map-container">
-				<map-locator id="map"></map-locator>
+				<map-locator-ro
+					marker="{{ .C.Address.LocationGeoJSON|json }}"
+					id="map"
+				></map-locator-ro>
 			</div>
 
 			<!-- Address Information -->

rmo/mailer.go

@@ -20,6 +20,7 @@ import (
 type address struct {
 	Country          string `db:"country"`
 	Locality         string `db:"locality"`
+	LocationGeoJSON  string `db:"location_geo_json"`
 	Number           int32  `db:"number_"`
 	OrganizationSlug string `db:"slug"`
 	PostalCode       string `db:"postal_code"`
@@ -53,6 +54,7 @@ func getMailer(ctx context.Context, r *http.Request) (*html.Response[contentMail
 			"address.number_",
 			"address.street",
 			"address.locality",
+			"ST_AsGeoJSON(address.geom) AS location_geo_json",
 			"address.region",
 			"address.postal_code",
 			"address.country",