Ongoing development.

src/Netzmacht/Contao/Leaflet/Dca/Content.php

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+<?php
+
+/**
+ * @package    dev
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2014 netzmacht creative David Molineus
+ * @license    LGPL 3.0
+ * @filesource
+ *
+ */
+
+namespace Netzmacht\Contao\Leaflet\Dca;
+
+use Netzmacht\Contao\Leaflet\Model\MapModel;
+
+/**
+ * Class Content
+ * @package Netzmacht\Contao\Leaflet\Dca
+ */
+class Content
+{
+    /**
+     * Get all leaflet maps.
+     *
+     * @return array
+     */
+    public function getMaps()
+    {
+        $options    = array();
+        $collection = MapModel::findAll();
+
+        if ($collection) {
+            foreach ($collection as $map) {
+                $options[$map->id] = $map->title;
+            }
+        }
+
+        return $options;
+    }
+}

src/Netzmacht/Contao/Leaflet/Dca/Leaflet.php

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+<?php
+
+/**
+ * @package    dev
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2014 netzmacht creative David Molineus
+ * @license    LGPL 3.0
+ * @filesource
+ *
+ */
+
+namespace Netzmacht\Contao\Leaflet\Dca;
+
+
+use Netzmacht\Contao\Leaflet\Mapper\DefinitionMapper;
+use Netzmacht\Contao\Leaflet\Mapper\MapMapper;
+use Netzmacht\Contao\Leaflet\Model\MapModel;
+use Netzmacht\LeafletPHP\Definition\Type\LatLng;
+
+class Leaflet
+{
+    /**
+     * Validate a coordinate.
+     *
+     * @param $value
+     *
+     * @return mixed
+     */
+    public function validateCoordinate($value)
+    {
+        if (!empty($value)) {
+            // Validate by creating latlng object. Throws an exception.
+
+            LatLng::fromString($value);
+        }
+
+        return $value;
+    }
+
+
+    public function getZoomLevels()
+    {
+        return range(1, 20);
+    }
+
+
+    public function getGeocoder($dataContainer)
+    {
+        $template = new \BackendTemplate('be_leaflet_geocode');
+        $template->field = 'ctrl_' . $dataContainer->field;
+
+        try {
+            $latLng = LatLng::fromString($dataContainer->value);
+            $template->marker = $latLng->toJson();
+        } catch(\Exception $e) {
+
+        }
+
+
+        return $template->parse();
+    }
+
+}