Add loading indicator.

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

@@ -12,6 +12,8 @@
 namespace Netzmacht\Contao\Leaflet\Dca;
 
 
+use Netzmacht\Contao\DevTools\Dca\Options\OptionsBuilder;
+use Netzmacht\Contao\Leaflet\Model\ControlModel;
 use Netzmacht\Contao\Leaflet\Model\LayerModel;
 
 class Control
@@ -38,4 +40,11 @@ class Control
 
         return $options;
     }
+
+    public function getZoomControls()
+    {
+        $collection = ControlModel::findBy('type', 'zoom', array('order' => 'title'));
+
+        return OptionsBuilder::fromCollection($collection, 'id', 'title')->getOptions();
+    }
 }

src/Netzmacht/Contao/Leaflet/Mapper/Control/LoadingControlMapper.php

@@ -0,0 +1,99 @@
+<?php
+
+/**
+ * @package    dev
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2015 netzmacht creative David Molineus
+ * @license    LGPL 3.0
+ * @filesource
+ *
+ */
+
+namespace Netzmacht\Contao\Leaflet\Mapper\Control;
+
+
+use Netzmacht\Contao\Leaflet\Mapper\DefinitionMapper;
+use Netzmacht\Contao\Leaflet\Model\ControlModel;
+use Netzmacht\LeafletPHP\Definition;
+use Netzmacht\LeafletPHP\Definition\Control\Zoom;
+use Netzmacht\LeafletPHP\Definition\Type\LatLngBounds;
+use Netzmacht\LeafletPHP\Plugins\Loading\LoadingControl;
+use Netzmacht\LeafletPHP\Plugins\Loading\SpinJsLoadingControl;
+
+class LoadingControlMapper extends AbstractControlMapper
+{
+    /**
+     * Class of the definition being created.
+     *
+     * @var string
+     */
+    protected static $definitionClass = 'Netzmacht\LeafletPHP\Plugins\Loading\LoadingControl';
+
+    /**
+     * Layer type.
+     *
+     * @var string
+     */
+    protected static $type = 'loading';
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getClassName(\Model $model, DefinitionMapper $mapper, LatLngBounds $bounds = null)
+    {
+        if ($model->spinjs) {
+            return 'Netzmacht\LeafletPHP\Plugins\Loading\SpinJsLoadingControl';
+        }
+
+        return parent::getClassName($model, $mapper, $bounds);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function initialize()
+    {
+        parent::initialize();
+
+        $this->addOption('separate');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function build(
+        Definition $definition,
+        \Model $model,
+        DefinitionMapper $mapper,
+        LatLngBounds $bounds = null
+    ) {
+        parent::build($definition, $model, $mapper, $bounds);
+
+        if ($definition instanceof SpinJsLoadingControl && $model->spin) {
+            $config = json_decode($model->spin, true);
+
+            if (is_array($config)) {
+                $definition->setSpin($config);
+            }
+        }
+
+        if ($definition instanceof LoadingControl && !$definition->isSeparate() && $model->zoomControl ) {
+            // Only assign if zoom control is activated and part of the map.
+            $control = ControlModel::findOneBy(
+                array('active=1', 'type=?', 'pid=?', 'id=?'),
+                array('zoom', $model->pid, $model->zoomControl)
+            );
+
+            if ($control) {
+                $control = $mapper->handle($control);
+
+                if ($control instanceof Zoom) {
+                    // By default the loading control overrides the position of the zoom control. Deactivate it by
+                    // overriding the position.
+                    $definition->setPosition($control->getPosition());
+                    $definition->setZoomControl($control);
+                }
+            }
+        }
+    }
+}