Implement a file layer for gpx,kml,wkt support.

src/Bundle/Resources/config/layers.yml

@@ -45,6 +45,10 @@ parameters:
         extend: true
         fit:    true
 
+    file:
+      children: false
+      icon: 'bundles/netzmachtcontaoleaflet/img/file.png'
+
 services:
   _defaults:
     public: false

src/Bundle/Resources/config/mappers.yml

@@ -58,6 +58,10 @@ services:
     tags:
       - { name: netzmacht.contao_leflet_maps.mapper }
 
+  netzmacht.contao_leaflet.mapper.file_layer:
+    class: Netzmacht\Contao\Leaflet\Mapper\Layer\FileLayerMapper
+    tags:
+      - { name: netzmacht.contao_leaflet.mapper }
 
   # Control mappers
   netzmacht.contao_leaflet.mapper.zoom_control:

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

@@ -217,6 +217,14 @@ $GLOBALS['TL_DCA']['tl_leaflet_layer'] = [
                 'pointToLayer',
             ],
         ],
+
+        'file extends default' => [
+            '+config' => ['file'],
+            '+expert' => [
+                'onEachFeature',
+                'pointToLayer',
+            ],
+        ],
     ],
 
     'metasubselectpalettes' => [
@@ -853,5 +861,18 @@ $GLOBALS['TL_DCA']['tl_leaflet_layer'] = [
             ],
             'sql'       => 'mediumtext NULL',
         ],
+        'file' => [
+            'label'     => &$GLOBALS['TL_LANG']['tl_leaflet_layer']['file'],
+            'exclude'   => true,
+            'inputType' => 'fileTree',
+            'eval'      => [
+                'filesOnly'  => true,
+                'fieldType'  => 'radio',
+                'mandatory'  => true,
+                'extensions' => 'gpx,kml,wkt',
+                'tl_class'   => 'clr',
+            ],
+            'sql'       => 'binary(16) NULL',
+        ],
     ],
 ];

src/Bundle/Resources/contao/languages/en/leaflet.php

@@ -39,6 +39,8 @@ $GLOBALS['TL_LANG']['leaflet_layer']['tile'][0]          = 'Tile layer';
 $GLOBALS['TL_LANG']['leaflet_layer']['tile'][1]          = 'Tile layer with full config options.';
 $GLOBALS['TL_LANG']['leaflet_layer']['overpass'][0]      = 'Overpass API';
 $GLOBALS['TL_LANG']['leaflet_layer']['overpass'][1]      = 'Overpass API data layer.';
+$GLOBALS['TL_LANG']['leaflet_layer']['file'][0]          = 'File';
+$GLOBALS['TL_LANG']['leaflet_layer']['file'][1]          = 'Geo data from a file (gpx,kml,wkt).';
 
 $GLOBALS['TL_LANG']['leaflet_vector']['polyline'][0]      = 'Polyline';
 $GLOBALS['TL_LANG']['leaflet_vector']['polyline'][1]      = 'Polyline overlay. For more details read the <a href="http://leafletjs.com/reference.html#polyline" target="_blank">Leaflet documentation</a>.';

src/Bundle/Resources/contao/languages/en/tl_leaflet_layer.php

@@ -145,6 +145,8 @@ $GLOBALS['TL_LANG']['tl_leaflet_layer']['amenity'][0]                    = 'Amen
 $GLOBALS['TL_LANG']['tl_leaflet_layer']['amenity'][1]                    = 'OSM amenity.';
 $GLOBALS['TL_LANG']['tl_leaflet_layer']['amenityIcon'][1]                = 'Icon';
 $GLOBALS['TL_LANG']['tl_leaflet_layer']['amenityIcon'][0]                = 'Icon style';
+$GLOBALS['TL_LANG']['tl_leaflet_layer']['file'][0]                       = 'File';
+$GLOBALS['TL_LANG']['tl_leaflet_layer']['file'][1]                       = 'Choose a file containing geodata. Supported formats are gpx,kml and wkt.';
 
 $GLOBALS['TL_LANG']['tl_leaflet_layer']['groupTypes']['layer'][0]   = 'Layer group';
 $GLOBALS['TL_LANG']['tl_leaflet_layer']['groupTypes']['layer'][1]   = 'Basic layer group. <br> See <a href="http://leafletjs.com/reference.html#layergroup" target="_blank">http://leafletjs.com/reference.html#layergroup</a>';