class SelectorsHandler

class SelectorsHandler {
    
    /**
     * @var array<string, SelectorInterface>
     */
    private $selectors = [];
    
    /**
     * @var Escaper
     */
    private $escaper;
    
    /**
     * Initializes selectors handler.
     *
     * @param array<string, SelectorInterface> $selectors default selectors to register
     */
    public function __construct(array $selectors = array()) {
        $this->escaper = new Escaper();
        $this->registerSelector('named_partial', new PartialNamedSelector());
        $this->registerSelector('named_exact', new ExactNamedSelector());
        $this->registerSelector('css', new CssSelector());
        foreach ($selectors as $name => $selector) {
            $this->registerSelector($name, $selector);
        }
    }
    
    /**
     * Registers new selector engine with specified name.
     *
     * @param string            $name     selector engine name
     * @param SelectorInterface $selector selector engine instance
     *
     * @return void
     */
    public function registerSelector(string $name, SelectorInterface $selector) {
        $this->selectors[$name] = $selector;
    }
    
    /**
     * Checks whether selector with specified name is registered on handler.
     *
     * @param string $name selector engine name
     *
     * @return bool
     */
    public function isSelectorRegistered(string $name) {
        return isset($this->selectors[$name]);
    }
    
    /**
     * Returns selector engine with specified name.
     *
     * @param string $name selector engine name
     *
     * @return SelectorInterface
     *
     * @throws \InvalidArgumentException
     */
    public function getSelector(string $name) {
        if ('named' === $name) {
            @trigger_error('Using the "named" selector directly from the handler is deprecated as of 1.6 and will be removed in 2.0.' . ' Use the "named_partial" or use the "named" selector through the Element API instead.', E_USER_DEPRECATED);
            $name = 'named_partial';
        }
        if (!$this->isSelectorRegistered($name)) {
            throw new \InvalidArgumentException("Selector \"{$name}\" is not registered.");
        }
        return $this->selectors[$name];
    }
    
    /**
     * Translates selector with specified name to XPath.
     *
     * @param string       $selector selector engine name (registered)
     * @param string|array $locator  selector locator (an array or a string depending on the selector being used)
     *
     * @return string
     */
    public function selectorToXpath(string $selector, $locator) {
        if ('xpath' === $selector) {
            if (!is_string($locator)) {
                throw new \InvalidArgumentException('The xpath selector expects to get a string as locator');
            }
            return $locator;
        }
        return $this->getSelector($selector)
            ->translateToXPath($locator);
    }
    
    /**
     * Translates string to XPath literal.
     *
     * @deprecated since Mink 1.7. Use \Behat\Mink\Selector\Xpath\Escaper::escapeLiteral when building Xpath
     *             or pass the unescaped value when using the named selector.
     *
     * @param string $s
     *
     * @return string
     */
    public function xpathLiteral(string $s) {
        @trigger_error('The ' . __METHOD__ . ' method is deprecated as of 1.7 and will be removed in 2.0.' . ' Use \\Behat\\Mink\\Selector\\Xpath\\Escaper::escapeLiteral instead when building Xpath' . ' or pass the unescaped value when using the named selector.', E_USER_DEPRECATED);
        return $this->escaper
            ->escapeLiteral($s);
    }

}