X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/b394a4d309794d719ebe5e77fc69d2a8411aa161..6adcce4e5d75fa21dea85742fa36ee3b97247b01:/app/assets/javascripts/index.js

diff --git a/app/assets/javascripts/index.js b/app/assets/javascripts/index.js
index d577e0cf7..d84b8ae24 100644
--- a/app/assets/javascripts/index.js
+++ b/app/assets/javascripts/index.js
@@ -48,16 +48,43 @@ $(document).ready(function () {
       code: "Q",
       keyid: "mapquest",
       name: I18n.t("javascripts.map.base.mapquest")
+    }),
+    new L.OSM.HOT({
+      attribution: copyright + ". Tiles courtesy of <a href='http://hot.openstreetmap.org/' target='_blank'>Humanitarian OpenStreetMap Team</a>",
+      code: "H",
+      keyid: "hot",
+      name: I18n.t("javascripts.map.base.hot")
     })
   ];
 
-  for (var i = layers.length - 1; i >= 0; i--) {
-    if (i === 0 || params.layers.indexOf(layers[i].options.code) >= 0) {
-      map.addLayer(layers[i]);
-      break;
+  function updateLayers(params) {
+    var layerParam = params.layers || "M";
+    var layersAdded = "";
+
+    for (var i = layers.length - 1; i >= 0; i--) {
+      if (layerParam.indexOf(layers[i].options.code) >= 0) {
+        map.addLayer(layers[i]);
+        layersAdded = layersAdded + layers[i].options.code;
+      } else if (i == 0 && layersAdded == "") {
+        map.addLayer(layers[i]);
+      } else {
+        map.removeLayer(layers[i]);
+      }
     }
   }
 
+  updateLayers(params);
+
+  $(window).on("hashchange", function () {
+    updateLayers(OSM.mapParams());
+  });
+
+  map.on("baselayerchange", function (e) {
+    if (map.getZoom() > e.layer.options.maxZoom) {
+      map.setView(map.getCenter(), e.layer.options.maxZoom, { reset: true });
+    }
+  });
+
   map.noteLayer = new L.LayerGroup();
   map.noteLayer.options = {code: 'N'};