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web/vendor/symfony-cmf/routing/Enhancer/RouteContentEnhancer.php

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+<?php
+
+/*
+ * This file is part of the Symfony CMF package.
+ *
+ * (c) 2011-2015 Symfony CMF
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Cmf\Component\Routing\Enhancer;
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+
+/**
+ * This enhancer sets the content to target field if the route provides content.
+ *
+ * Only works with RouteObjectInterface routes that can return a referenced
+ * content.
+ *
+ * @author David Buchmann
+ */
+class RouteContentEnhancer implements RouteEnhancerInterface
+{
+    /**
+     * @var string field for the route class
+     */
+    protected $routefield;
+    /**
+     * @var string field to write hashmap lookup result into
+     */
+    protected $target;
+
+    /**
+     * @param string $routefield the field name of the route class
+     * @param string $target     the field name to set from the map
+     * @param array  $hashmap    the map of class names to field values
+     */
+    public function __construct($routefield, $target)
+    {
+        $this->routefield = $routefield;
+        $this->target = $target;
+    }
+
+    /**
+     * If the route has a non-null content and if that content class is in the
+     * injected map, returns that controller.
+     *
+     * {@inheritdoc}
+     */
+    public function enhance(array $defaults, Request $request)
+    {
+        if (isset($defaults[$this->target])) {
+            // no need to do anything
+            return $defaults;
+        }
+
+        if (!isset($defaults[$this->routefield])
+            || !$defaults[$this->routefield] instanceof RouteObjectInterface
+        ) {
+            // we can't determine the content
+            return $defaults;
+        }
+        /** @var $route RouteObjectInterface */
+        $route = $defaults[$this->routefield];
+
+        $content = $route->getContent();
+        if (!$content) {
+            // we have no content
+            return $defaults;
+        }
+        $defaults[$this->target] = $content;
+
+        return $defaults;
+    }
+}