Move layers configuration.

src/Backend/Renderer/Label/Layer/AbstractLabelRenderer.php

@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * Leaflet maps for Contao CMS.
+ *
+ * @package    contao-leaflet-maps
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2016-2017 netzmacht David Molineus. All rights reserved.
+ * @license    LGPL-3.0 https://github.com/netzmacht/contao-leaflet-maps/blob/master/LICENSE
+ * @filesource
+ */
+
+declare(strict_types=1);
+
+namespace Netzmacht\Contao\Leaflet\Backend\Renderer\Label\Layer;
+
+/**
+ * Class AbstractLabelRenderer.
+ *
+ * @package Netzmacht\Contao\Leaflet\Backend\Renderer\Label\Layer
+ */
+abstract class AbstractLabelRenderer implements LayerLabelRenderer
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function supports(array $row): bool
+    {
+        return $row['type'] === $this->getLayerType();
+    }
+
+    /**
+     * Get the supported layer type.
+     *
+     * @return string
+     */
+    abstract protected function getLayerType(): string;
+}