Restore zoom and lat lon from a previous visit

web/assets/js/leaflet.restoreview.js

@@ -0,0 +1,31 @@
+var RestoreViewMixin = {
+    restoreView: function () {
+        var storage = window.localStorage || {};
+        if (!this.__initRestore) {
+            this.on('moveend', function (e) {
+                if (!this._loaded)
+                    return;  // Never access map bounds if view is not set.
+
+                var view = {
+                    lat: this.getCenter().lat,
+                    lng: this.getCenter().lng,
+                    zoom: this.getZoom()
+                };
+                storage['mapView'] = JSON.stringify(view);
+            }, this);
+            this.__initRestore = true;
+        }
+
+        var view = storage['mapView'];
+        try {
+            view = JSON.parse(view || '');
+            this.setView(L.latLng(view.lat, view.lng), view.zoom, true);
+            return true;
+        }
+        catch (err) {
+            return false;
+        }
+    }
+};
+
+L.Map.include(RestoreViewMixin);

web/assets/js/site.js

@@ -3,7 +3,9 @@ var spinner = 0;
 
 // https://github.com/Leaflet/Leaflet
 var map = new L.Map('map');
-map.setView([-27.4927, -58.8063], 12);
+if (!map.restoreView()) {
+    map.setView([-27.4927, -58.8063], 12);
+}
 
 // https://github.com/Turbo87/sidebar-v2/
 var sidebar = L.control.sidebar('sidebar').addTo(map);

web/index.html

@@ -189,6 +189,7 @@ <h1>Enlaces de interés</h1>
 
     <!-- Javascripts -->
     <script src="http://cdn.leafletjs.com/leaflet-0.7.2/leaflet.js"></script>
+    <script src="assets/js/leaflet.restoreview.js"></script>
     <script src="assets/js/leaflet-sidebar.js"></script>
     <script src="assets/js/leaflet.awesome-markers.js"></script>