openstreetmap-website/app/assets/javascripts/embed.js.erb

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//= depend_on settings.yml
//= depend_on settings.local.yml
//= depend_on layers.yml
//= require leaflet/dist/leaflet-src
//= require leaflet.osm
//= require i18n
//= require i18n/embed
if (navigator.languages) {
I18n.locale = navigator.languages[0];
} else if (navigator.language) {
I18n.locale = navigator.language;
}
I18n.default_locale = <%= I18n.default_locale.to_json %>;
I18n.fallbacks = true;
window.onload = function () {
const args = Object.fromEntries(new URLSearchParams(window.location.search));
const tileOptions = {
mapnik: {
<% if Settings.key?(:tile_cdn_url) %>
url: <%= Settings.tile_cdn_url.to_json %>
<% end %>
}
};
const apiKeys = {
<% if Settings.key?(:thunderforest_key) %>
THUNDERFOREST_KEY: <%= Settings.thunderforest_key.to_json %>
<% end %>
};
const map = L.map("map");
map.attributionControl.setPrefix("");
map.removeControl(map.attributionControl);
const isDarkTheme = args.theme === "dark" || (args.theme !== "light" && window.matchMedia("(prefers-color-scheme: dark)").matches);
const layers = <%=
YAML.load_file(Rails.root.join("config/layers.yml"))
.select { |entry| entry["canEmbed"] }
.each_with_object({}) do |entry, obj|
obj[entry["layerId"]] = {
layer: entry["leafletOsmId"],
darkLayer: entry["leafletOsmDarkId"],
apiKeyId: entry["apiKeyId"]
}.compact
end.to_json
%>;
const layerId = (args.layer || "").replaceAll(" ", "");
const layerConfig = layers[layerId] || layers.mapnik;
const { layer, ...options } = {
layer: layerConfig.darkLayer && isDarkTheme ? layerConfig.darkLayer : layerConfig.layer,
apikey: apiKeys[layerConfig.apiKeyId],
...tileOptions[layerId]
};
new L.OSM[layer](options).addTo(map);
if (args.marker) {
L.marker(args.marker.split(","), { icon: L.icon({
iconUrl: <%= asset_path('leaflet/dist/images/marker-icon.png').to_json %>,
iconSize: new L.Point(25, 41),
iconAnchor: new L.Point(12, 41),
shadowUrl: <%= asset_path('leaflet/dist/images/marker-shadow.png').to_json %>,
shadowSize: new L.Point(41, 41)
}) }).addTo(map);
}
const bbox = (args.bbox || "-180,-90,180,90").split(",");
map.fitBounds([[bbox[1], bbox[0]], [bbox[3], bbox[2]]]);
map.addControl(new L.Control.OSMReportAProblem());
};
L.Control.OSMReportAProblem = L.Control.Attribution.extend({
options: {
position: "bottomright",
prefix: `<a href="https://www.openstreetmap.org/fixthemap?lat={x}&lon={y}&zoom={z}" target="_blank">${I18n.t("javascripts.embed.report_problem")}</a>`
},
onAdd: function (map) {
const container = L.Control.Attribution.prototype.onAdd.call(this, map);
map.on("moveend", this._update, this);
return container;
},
_update: function () {
L.Control.Attribution.prototype._update.call(this);
this._container.innerHTML =
this._container.innerHTML
.replace("{x}", this._map.getCenter().lat)
.replace("{y}", this._map.getCenter().lng)
.replace("{z}", this._map.getZoom());
}
});