chore: Integrate i18n changes from Leaflet PR

See https://github.com/Leaflet/Leaflet/pull/9281

umap/static/umap/js/modules/global.js

@@ -1,4 +1,3 @@
-import * as L from '../../vendors/leaflet/leaflet-src.esm.js'
 import URLs from './urls.js'
 import Browser from './browser.js'
 import * as Utils from './utils.js'
@@ -8,7 +7,6 @@ import { Request, ServerRequest, RequestError, HTTPError, NOKError } from './req
 // For the not yet module-compatible JS out there.
 
 // Copy the leaflet module, it's expected by leaflet plugins to be writeable.
-window.L = { ...L }
 window.U = {
   URLs,
   Request,

umap/static/umap/js/modules/i18n.js

@@ -0,0 +1,35 @@
+// Comes from https://github.com/Leaflet/Leaflet/pull/9281
+import { Util } from '../../vendors/leaflet/leaflet-src.esm.js'
+
+const locales = {}
+
+// @property locale: String
+// The current locale code, that will be used when translating strings.
+export let locale = null
+
+// @function registerLocale(code: String, locale?: Object): String
+// Define localized strings for a given locale, defined by `code`.
+export function registerLocale(code, locale) {
+  locales[code] = Util.extend({}, locales[code], locale)
+}
+// @function setLocale(code: String): undefined
+// Define or change the locale code to be used when translating strings.
+export function setLocale(code) {
+  locale = code
+}
+// @function translate(string: String, data?: Object): String
+// Actually try to translate the `string`, with optionnal variable passed in `data`.
+export function translate(string, data) {
+  if (locale && locales[locale] && locales[locale][string] !== undefined) {
+    string = locales[locale][string]
+  }
+  try {
+    // Do not fail if some data is missing
+    // a bad translation should not break the app
+    string = Util.template(string, data)
+  } catch (err) {
+    console.error(err)
+  }
+
+  return string
+}

umap/static/umap/js/modules/leaflet-configure.js

@@ -0,0 +1,6 @@
+import * as L from '../../vendors/leaflet/leaflet-src.esm.js'
+// Comes from https://github.com/Leaflet/Leaflet/pull/9281
+// TODELETE once it's merged!
+import * as i18n from './i18n.js'
+
+window.L = { ...L, ...i18n }

umap/templates/umap/js.html

@@ -2,6 +2,12 @@
 <script type="module"
         src="{% static 'umap/vendors/leaflet/leaflet-src.esm.js' %}"
         defer></script>
+<script type="module" src="{% static 'umap/js/modules/leaflet-configure.js' %}" defer></script>
+{% if locale %}
+  {% with "umap/locale/"|add:locale|add:".js" as path %}
+    <script src="{% static path %}" defer></script>
+  {% endwith %}
+{% endif %}
 <script type="module" src="{% static 'umap/js/modules/global.js' %}" defer></script>
 <script src="{% static 'umap/vendors/editable/Path.Drag.js' %}" defer></script>
 <script src="{% static 'umap/vendors/editable/Leaflet.Editable.js' %}" defer></script>
@@ -39,11 +45,7 @@
 <script src="{% static 'umap/vendors/colorbrewer/colorbrewer.js' %}" defer></script>
 <script src="{% static 'umap/vendors/simple-statistics/simple-statistics.min.js' %}"
         defer></script>
-{% if locale %}
-  {% with "umap/locale/"|add:locale|add:".js" as path %}
-    <script src="{% static path %}" defer></script>
-  {% endwith %}
-{% endif %}
+
 <script src="{% static 'umap/js/umap.core.js' %}" defer></script>
 <script src="{% static 'umap/js/umap.autocomplete.js' %}" defer></script>
 <script src="{% static 'umap/js/umap.popup.js' %}" defer></script>