Add filters.

src/Netzmacht/Contao/Leaflet/Filter/BboxFilter.php

@@ -0,0 +1,72 @@
+<?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\Filter;
+
+use Netzmacht\LeafletPHP\Definition\Type\LatLngBounds;
+
+/**
+ * The Bounds box filter.
+ *
+ * @package Netzmacht\Contao\Leaflet\Filter
+ */
+class BboxFilter implements Filter
+{
+    /**
+     * The bounds.
+     *
+     * @var LatLngBounds
+     */
+    private $bounds;
+
+    /**
+     * Construct.
+     *
+     * @param LatLngBounds $bounds The bounds.
+     */
+    public function __construct(LatLngBounds $bounds)
+    {
+
+        $this->bounds = $bounds;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public static function getName()
+    {
+        return 'bbox';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public static function fromRequest($request)
+    {
+        return new static(LatLngBounds::fromString($request));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function toRequest()
+    {
+        return $this->bounds->toString(true);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getValues()
+    {
+        return array('bounds' => $this->bounds);
+    }
+}

src/Netzmacht/Contao/Leaflet/Filter/DistanceFilter.php

@@ -0,0 +1,95 @@
+<?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\Filter;
+
+use Netzmacht\LeafletPHP\Definition\Type\LatLng;
+
+/**
+ * Class DistanceFilter filters by a coordinate the the distance from it.
+ *
+ * @package Netzmacht\Contao\Leaflet\Filter
+ */
+class DistanceFilter implements Filter
+{
+    /**
+     * The center coordinates.
+     *
+     * @var LatLng
+     */
+    private $center;
+
+    /**
+     * The radius in meters.
+     *
+     * @var int
+     */
+    private $radius;
+
+    /**
+     * Construct.
+     *
+     * @param LatLng $center The center coordinates.
+     * @param int    $radius The radius in meters.
+     */
+    public function __construct(LatLng $center, $radius)
+    {
+        $this->center = $center;
+        $this->radius = (int) $radius;
+    }
+
+
+    /**
+     * {@inheritdoc}
+     */
+    public static function getName()
+    {
+        return 'distance';
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @throws \InvalidArgumentException If the value could not be parsed.
+     */
+    public static function fromRequest($request)
+    {
+        $values = explode(',', $request, 3);
+
+        if (count($values) !== 3) {
+            throw new \InvalidArgumentException(sprintf('Invalid request value "%s"', $request));
+        }
+
+        return new static(
+            new LatLng($values[0], $values[1]),
+            $values[2]
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function toRequest()
+    {
+        return $this->center->toString(true) . ',' . $this->radius;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getValues()
+    {
+        return array(
+            'radius' => $this->radius,
+            'center' => $this->center
+        );
+    }
+}

src/Netzmacht/Contao/Leaflet/Filter/Filter.php

@@ -0,0 +1,52 @@
+<?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\Filter;
+
+/**
+ * Interface Filter is designed for filter a data request. It just contains the filter information.
+ *
+ * Each layer has it own responsibility to apply the filter to their provided data.
+ *
+ * @package Netzmacht\Contao\Leaflet\Filter
+ */
+interface Filter
+{
+    /**
+     * Get the name of the filter.
+     *
+     * @return string
+     */
+    public static function getName();
+
+    /**
+     * Create the filter from a request string.
+     *
+     * @param string $request The request.
+     *
+     * @return Filter
+     */
+    public static function fromRequest($request);
+
+    /**
+     * Create request string representation.
+     *
+     * @return string
+     */
+    public function toRequest();
+
+    /**
+     * Get the param values.
+     *
+     * @return array
+     */
+    public function getValues();
+}