Move layers configuration.

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

@@ -0,0 +1,45 @@
+<?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;
+
+use Symfony\Component\Translation\TranslatorInterface as Translator;
+
+/**
+ * Interface LayerLabelRenderer.
+ *
+ * @package Netzmacht\Contao\Leaflet\Backend\Renderer\Label\Layer
+ */
+interface LayerLabelRenderer
+{
+    /**
+     * Check if current row is supported.
+     *
+     * @param array $row Current row.
+     *
+     * @return bool
+     */
+    public function supports(array $row): bool;
+
+    /**
+     * Render the backend label of an layer.
+     *
+     * @param array      $row        Current row.
+     * @param string     $label      Default label.
+     * @param Translator $translator The translator.
+     *
+     * @return string
+     */
+    public function render(array $row, string $label, Translator $translator): string;
+}