--- /dev/null
+<?php
+
+/*
+ * This file is part of the Mink package.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Behat\Mink\Selector;
+
+use Symfony\Component\CssSelector\CssSelector as CSS;
+use Symfony\Component\CssSelector\CssSelectorConverter;
+
+/**
+ * CSS selector engine. Transforms CSS to XPath.
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+class CssSelector implements SelectorInterface
+{
+ /**
+ * Translates CSS into XPath.
+ *
+ * @param string|array $locator current selector locator
+ *
+ * @return string
+ */
+ public function translateToXPath($locator)
+ {
+ if (!is_string($locator)) {
+ throw new \InvalidArgumentException('The CssSelector expects to get a string as locator');
+ }
+
+ // Symfony 2.8+ API
+ if (class_exists('Symfony\Component\CssSelector\CssSelectorConverter')) {
+ $converter = new CssSelectorConverter();
+
+ return $converter->toXPath($locator);
+ }
+
+ // old static API for Symfony 2.7 and older
+ return CSS::toXPath($locator);
+ }
+}