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vendor/symfony/css-selector/XPath/Extension/HtmlExtension.php
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vendor/symfony/css-selector/XPath/Extension/HtmlExtension.php
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\CssSelector\XPath\Extension;
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use Symfony\Component\CssSelector\Exception\ExpressionErrorException;
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use Symfony\Component\CssSelector\Node\FunctionNode;
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use Symfony\Component\CssSelector\XPath\Translator;
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use Symfony\Component\CssSelector\XPath\XPathExpr;
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/**
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* XPath expression translator HTML extension.
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*
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* This component is a port of the Python cssselect library,
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* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
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*
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* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
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*
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* @internal
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*/
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class HtmlExtension extends AbstractExtension
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{
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/**
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* Constructor.
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*
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* @param Translator $translator
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*/
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public function __construct(Translator $translator)
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{
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$translator
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->getExtension('node')
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->setFlag(NodeExtension::ELEMENT_NAME_IN_LOWER_CASE, true)
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->setFlag(NodeExtension::ATTRIBUTE_NAME_IN_LOWER_CASE, true);
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}
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/**
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* {@inheritdoc}
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*/
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public function getPseudoClassTranslators()
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{
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return array(
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'checked' => array($this, 'translateChecked'),
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'link' => array($this, 'translateLink'),
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'disabled' => array($this, 'translateDisabled'),
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'enabled' => array($this, 'translateEnabled'),
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'selected' => array($this, 'translateSelected'),
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'invalid' => array($this, 'translateInvalid'),
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'hover' => array($this, 'translateHover'),
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'visited' => array($this, 'translateVisited'),
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);
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}
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/**
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* {@inheritdoc}
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*/
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public function getFunctionTranslators()
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{
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return array(
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'lang' => array($this, 'translateLang'),
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);
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}
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/**
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* @param XPathExpr $xpath
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*
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* @return XPathExpr
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*/
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public function translateChecked(XPathExpr $xpath)
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{
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return $xpath->addCondition(
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'(@checked '
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."and (name(.) = 'input' or name(.) = 'command')"
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."and (@type = 'checkbox' or @type = 'radio'))"
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);
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}
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/**
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* @param XPathExpr $xpath
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*
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* @return XPathExpr
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*/
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public function translateLink(XPathExpr $xpath)
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{
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return $xpath->addCondition("@href and (name(.) = 'a' or name(.) = 'link' or name(.) = 'area')");
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}
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/**
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* @param XPathExpr $xpath
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*
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* @return XPathExpr
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*/
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public function translateDisabled(XPathExpr $xpath)
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{
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return $xpath->addCondition(
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'('
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.'@disabled and'
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.'('
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."(name(.) = 'input' and @type != 'hidden')"
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." or name(.) = 'button'"
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." or name(.) = 'select'"
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." or name(.) = 'textarea'"
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." or name(.) = 'command'"
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." or name(.) = 'fieldset'"
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." or name(.) = 'optgroup'"
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." or name(.) = 'option'"
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.')'
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.') or ('
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."(name(.) = 'input' and @type != 'hidden')"
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." or name(.) = 'button'"
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." or name(.) = 'select'"
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." or name(.) = 'textarea'"
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.')'
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.' and ancestor::fieldset[@disabled]'
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);
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// todo: in the second half, add "and is not a descendant of that fieldset element's first legend element child, if any."
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}
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/**
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* @param XPathExpr $xpath
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*
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* @return XPathExpr
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*/
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public function translateEnabled(XPathExpr $xpath)
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{
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return $xpath->addCondition(
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'('
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.'@href and ('
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."name(.) = 'a'"
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." or name(.) = 'link'"
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." or name(.) = 'area'"
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.')'
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.') or ('
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.'('
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."name(.) = 'command'"
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." or name(.) = 'fieldset'"
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." or name(.) = 'optgroup'"
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.')'
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.' and not(@disabled)'
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.') or ('
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.'('
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."(name(.) = 'input' and @type != 'hidden')"
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." or name(.) = 'button'"
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." or name(.) = 'select'"
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." or name(.) = 'textarea'"
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." or name(.) = 'keygen'"
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.')'
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.' and not (@disabled or ancestor::fieldset[@disabled])'
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.') or ('
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."name(.) = 'option' and not("
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.'@disabled or ancestor::optgroup[@disabled]'
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.')'
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.')'
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);
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}
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/**
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* @param XPathExpr $xpath
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* @param FunctionNode $function
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*
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* @return XPathExpr
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*
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* @throws ExpressionErrorException
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*/
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public function translateLang(XPathExpr $xpath, FunctionNode $function)
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{
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$arguments = $function->getArguments();
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foreach ($arguments as $token) {
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if (!($token->isString() || $token->isIdentifier())) {
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throw new ExpressionErrorException(
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'Expected a single string or identifier for :lang(), got '
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.implode(', ', $arguments)
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);
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}
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}
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return $xpath->addCondition(sprintf(
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'ancestor-or-self::*[@lang][1][starts-with(concat('
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."translate(@%s, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), '-')"
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.', %s)]',
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'lang',
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Translator::getXpathLiteral(strtolower($arguments[0]->getValue()).'-')
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));
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}
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/**
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* @param XPathExpr $xpath
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*
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* @return XPathExpr
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*/
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public function translateSelected(XPathExpr $xpath)
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{
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return $xpath->addCondition("(@selected and name(.) = 'option')");
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}
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/**
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* @param XPathExpr $xpath
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*
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* @return XPathExpr
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*/
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public function translateInvalid(XPathExpr $xpath)
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{
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return $xpath->addCondition('0');
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}
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/**
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* @param XPathExpr $xpath
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*
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* @return XPathExpr
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*/
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public function translateHover(XPathExpr $xpath)
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{
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return $xpath->addCondition('0');
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}
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/**
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* @param XPathExpr $xpath
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*
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* @return XPathExpr
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*/
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public function translateVisited(XPathExpr $xpath)
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{
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return $xpath->addCondition('0');
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}
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/**
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* {@inheritdoc}
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*/
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public function getName()
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{
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return 'html';
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}
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}
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