Add support for Plus codes

https://plus.codes/

Requires peer dependency https://www.npmjs.com/package/open-location-code

Author: simon04

README.md

@@ -24,6 +24,7 @@ The plugin supports many different data providers:
 * [Pelias](https://pelias.io/), [geocode.earth](https://geocode.earth/) (formerly Mapzen Search), [Openrouteservice](https://openrouteservice.org/dev/#/api-docs/geocode)
 * [HERE Geocoder API](https://developer.here.com/documentation/geocoder/topics/introduction.html)
 * [Neutrino API](https://www.neutrinoapi.com/api/geocode-address/)
+* [Plus codes](https://plus.codes/) (formerly OpenLocationCode) (requires [open-location-code](https://www.npmjs.com/package/open-location-code))
 
 The plugin can easily be extended to support other providers. Current extensions:
 

bower.json

@@ -23,6 +23,8 @@
     "what3words",
     "mapquest",
     "mapzen",
+    "pluscodes",
+    "open location code",
     "here"
   ],
   "license": "BSD-2-Clause",

package-lock.json

@@ -35,6 +35,8 @@
     "what3words",
     "mapquest",
     "mapzen",
+    "pluscodes",
+    "open location code",
     "here"
   ],
   "author": "Per Liedman <per@liedman.net>",
@@ -60,5 +62,8 @@
     "rollup-plugin-uglify": "^5.0.2",
     "sinon": "^7.3.2",
     "uglify-js": "^3.4.9"
+  },
+  "optionalDependencies": {
+    "open-location-code": "^1.0.0"
   }
 }

package.json

@@ -7,6 +7,7 @@ export * from './mapbox';
 export * from './mapquest';
 export * from './neutrino';
 export * from './nominatim';
+export * from './open-location-code';
 export * from './pelias';
 export * from './photon';
 export * from './what3words';

src/geocoders/index.js

@@ -0,0 +1,55 @@
+import L from 'leaflet';
+
+export var OpenLocationCode = L.Class.extend({
+  options: {
+    OpenLocationCode: undefined,
+    codeLength: undefined
+  },
+
+  initialize: function(options) {
+    L.setOptions(this, options);
+  },
+
+  geocode: function(query, cb, context) {
+    try {
+      var decoded = this.options.OpenLocationCode.decode(query);
+      var result = {
+        name: query,
+        center: L.latLng(decoded.latitudeCenter, decoded.longitudeCenter),
+        bbox: L.latLngBounds(
+          L.latLng(decoded.latitudeLo, decoded.longitudeLo),
+          L.latLng(decoded.latitudeHi, decoded.longitudeHi)
+        )
+      };
+      cb.call(context, [result]);
+    } catch (e) {
+      console.warn(e); // eslint-disable-line no-console
+      cb.call(context, []);
+    }
+  },
+  reverse: function(location, scale, cb, context) {
+    try {
+      var code = this.options.OpenLocationCode.encode(
+        location.lat,
+        location.lng,
+        this.options.codeLength
+      );
+      var result = {
+        name: code,
+        center: L.latLng(location.lat, location.lng),
+        bbox: L.latLngBounds(
+          L.latLng(location.lat, location.lng),
+          L.latLng(location.lat, location.lng)
+        )
+      };
+      cb.call(context, [result]);
+    } catch (e) {
+      console.warn(e); // eslint-disable-line no-console
+      cb.call(context, []);
+    }
+  }
+});
+
+export function openLocationCode(options) {
+  return new OpenLocationCode(options);
+}