Add an wizard callback listener for the radius field.

Fix readme markup.

Add missing wizard class.

README.md

@@ -94,3 +94,25 @@ $GLOBALS['TL_DCA']['tl_page']['fields']['radius'] = [
     'sql' => 'varchar(255) NOT NULL default \'\''
 ];
 ```
+
+If you want to add an wizard icon to the radius field as well, a wizard is shipped with. You only have to add the 
+callback and define the coordinates field relation. 
+
+```php
+$GLOBALS['TL_DCA']['tl_page']['fields']['radius'] = [
+    'label'     => ['Radius', 'Angabe des Radius in Metern'],
+    'inputType' => 'text',
+    'eval'      => [
+        'rgxp'        => 'natural',
+        'default'     => 500,
+        'minval'      => 100,
+        'maxval'      => 5000,
+        'tl_class'    => 'w50 wizard',
+        'coordinates' => 'coordinates'
+    ],
+    'wizard' => [
+        ['netzmacht.contao_leaflet_geocode.listeners.radius_wizard', 'generateWizard'],
+    ],
+    'sql' => 'varchar(255) NOT NULL default \'\''
+];
+```

src/DependencyInjection/LeafletGeocodeWidgetExtension.php

@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Geocode backend widget based on Leaflet.
+ *
+ * @package    netzmacht
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2016-2018 netzmacht David Molineus. All rights reserved.
+ * @license    LGPL-3.0 https://github.com/netzmacht/contao-leaflet-geocode-widget/blob/master/LICENSE
+ * @filesource
+ */
+
+namespace Netzmacht\Contao\Leaflet\GeocodeWidget\DependencyInjection;
+
+use Symfony\Component\Config\FileLocator;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Extension\Extension;
+use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
+
+/**
+ * Class LeafletGeocodeWidgetExtension
+ */
+class LeafletGeocodeWidgetExtension extends Extension
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function load(array $configs, ContainerBuilder $container)
+    {
+        $loader = new YamlFileLoader(
+            $container,
+            new FileLocator(dirname(__DIR__) . '/Resources/config')
+        );
+
+        $loader->load('listeners.yml');
+    }
+}

src/EventListener/RadiusWizardCallbackListener.php

@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * Geocode backend widget based on Leaflet.
+ *
+ * @package    netzmacht
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2016-2018 netzmacht David Molineus. All rights reserved.
+ * @license    LGPL-3.0 https://github.com/netzmacht/contao-leaflet-geocode-widget/blob/master/LICENSE
+ * @filesource
+ */
+
+namespace Netzmacht\Contao\Leaflet\GeocodeWidget\EventListener;
+
+use Contao\DataContainer;
+
+/**
+ * Class RadiusWizardCallbackListener
+ *
+ * @package Netzmacht\Contao\Leaflet\GeocodeWidget\EventListener
+ */
+class RadiusWizardCallbackListener
+{
+    /**
+     * Generate the wizard for the radius widget.
+     *
+     * @param DataContainer $dataContainer Data container driver.
+     *
+     * @return string
+     *
+     * @SuppressWarnings(PHPMD.Superglobals)
+     */
+    public function generateWizard($dataContainer)
+    {
+        if (!isset($GLOBALS['TL_DCA'][$dataContainer->table]['fields'][$dataContainer->field]['eval']['coordinates'])) {
+            return '';
+        }
+
+        return sprintf(
+            '<a href="#" onclick="$(\'ctrl_%s_toggle\').fireEvent(\'click\');return false;"><img src="%s"></a>',
+            $GLOBALS['TL_DCA'][$dataContainer->table]['fields'][$dataContainer->field]['eval']['coordinates'],
+            'bundles/leafletgeocodewidget/img/map.png'
+        );
+    }
+}

src/GeocodeWidget.php

@@ -10,7 +10,6 @@
  * @filesource
  */
 
-
 namespace Netzmacht\Contao\Leaflet\GeocodeWidget;
 
 use Netzmacht\Contao\Leaflet\GeocodeWidget\Widget\GeocodeWidget as BaseWidget;

src/Resources/config/listeners.yml

@@ -0,0 +1,3 @@
+services:
+  netzmacht.contao_leaflet_geocode.listeners.radius_wizard:
+    class: Netzmacht\Contao\Leaflet\GeocodeWidget\EventListener\RadiusWizardCallbackListener