Rearrange assets.

js/Mixin.GeoJSON.js

@@ -0,0 +1,34 @@
+/**
+ * Add update bounds method for geo json layers. It is triggered when map bounds changed and make a new request
+ * to get the data in the new bounds.
+ */
+L.GeoJSON.include({
+    /**
+     * Update bounds.
+     *
+     * @param {L.Event} e The subscribed event.
+     */
+    refreshData: function(e) {
+        var dataLayer = L.geoJson(),
+            layer     = this;
+
+        dataLayer.on('ready', function() {
+            var i, layers = layer.getLayers();
+
+            // Clear old data.
+            for (i = 0; i < layers.length; i++) {
+                layer.removeLayer(layers[i]);
+            }
+
+            // Copy data from temporary layer.
+            layers = this.getLayers();
+            for (i = 0; i < layers.length; i++) {
+                this.removeLayer(layers[i]);
+                layer.addLayer(layers[i]);
+            }
+        });
+
+        // TODO: Allow other data formats.
+        omnivore.geojson(L.contao.createRequestUrl(this.options.requestHash, e.target), null, dataLayer);
+    }
+});