Support bounds changing after files got loaded.

js/Contao.js

@@ -124,8 +124,22 @@ L.Contao = L.Evented.extend({
      * @param map         Pass a map object so that the data loading events are passed to the map.
      */
     load: function (hash, type, options, customLayer, map) {
-        var url   = this.createRequestUrl(hash, map),
+        var url = this.createRequestUrl(hash, map);
-            layer = omnivore[type](url, options, customLayer);
+
+        return this.loadFile(url, type, options, customLayer, map);
+    },
+
+    /**
+     * Load data from an url into a layer using omnivore.
+     *
+     * @param url         A file url.
+     * @param type        The response content format.
+     * @param options     Parser options
+     * @param customLayer optional custom layer.
+     * @param map         Pass a map object so that the data loading events are passed to the map.
+     */
+    loadFile: function (url, type, options, customLayer, map) {
+        var layer = omnivore[type](url, options, customLayer);
 
         if (map) {
             // Required because Control.Loading tries to get _leafet_id which is created here.

src/Bundle/Resources/config/layers.yml

@@ -48,6 +48,8 @@ parameters:
     file:
       children: false
       icon: 'bundles/netzmachtcontaoleaflet/img/file.png'
+      boundsMode:
+        extend: true
 
 services:
   _defaults:

src/Bundle/Resources/contao/dca/tl_leaflet_layer.php

@@ -219,7 +219,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_layer'] = [
         ],
 
         'file extends default' => [
-            '+config' => ['file'],
+            '+config' => ['file', 'boundsMode'],
             '+expert' => [
                 'onEachFeature',
                 'pointToLayer',

src/Mapper/Layer/FileLayerMapper.php

@@ -124,6 +124,10 @@ class FileLayerMapper extends AbstractLayerMapper
 
         $customLayer = $definition->getCustomLayer();
         if ($customLayer instanceof GeoJson) {
+            if ($model->boundsMode) {
+                $customLayer->setOption('boundsMode', $model->boundsMode);
+            }
+
             if ($model->pointToLayer) {
                 $customLayer->setPointToLayer(new Expression($model->pointToLayer));
             }

src/Subscriber/EncoderSubscriber.php

@@ -89,16 +89,15 @@ class EncoderSubscriber implements EventSubscriberInterface
     {
         $value    = $event->getValue();
         $encoder  = $event->getEncoder();
-        $template = 'L.contao.load(%s, %s, %s, %s, map);';
+        $template = 'L.contao.%s(%s, %s, %s, %s, map);';
+        $method   = 'loadFile';
 
         if ($value instanceof OmnivoreLayer) {
             $url = $value->getUrl();
 
             if ($url instanceof RequestUrl) {
                 $url = $url->getHash();
-            } elseif (strpos($url, '/') !== false) {
+                $method = 'load';
-                // Slash found, not a Contao leaflet hash, do not replace encoding.
-                return;
             }
 
             if ($value->getCustomLayer()) {
@@ -111,6 +110,7 @@ class EncoderSubscriber implements EventSubscriberInterface
             $event->addLine(
                 sprintf(
                     $template,
+                    $method,
                     $encoder->encodeValue($url),
                     $encoder->encodeValue(strtolower(str_replace('Omnivore.', '', $value->getType()))),
                     $encoder->encodeArray($value->getOptions(), JSON_FORCE_OBJECT),