| /vendor/symfony/css-selector/XPath/Extension/HtmlExtension.php |
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| @@ -0,0 +1,240 @@ |
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| <?php |
| |
| /* |
| * This file is part of the Symfony package. |
| * |
| * (c) Fabien Potencier <fabien@symfony.com> |
| * |
| * For the full copyright and license information, please view the LICENSE |
| * file that was distributed with this source code. |
| */ |
| |
| namespace Symfony\Component\CssSelector\XPath\Extension; |
| |
| use Symfony\Component\CssSelector\Exception\ExpressionErrorException; |
| use Symfony\Component\CssSelector\Node\FunctionNode; |
| use Symfony\Component\CssSelector\XPath\Translator; |
| use Symfony\Component\CssSelector\XPath\XPathExpr; |
| |
| /** |
| * XPath expression translator HTML extension. |
| * |
| * This component is a port of the Python cssselect library, |
| * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. |
| * |
| * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> |
| * |
| * @internal |
| */ |
| class HtmlExtension extends AbstractExtension |
| { |
| /** |
| * Constructor. |
| * |
| * @param Translator $translator |
| */ |
| public function __construct(Translator $translator) |
| { |
| $translator |
| ->getExtension('node') |
| ->setFlag(NodeExtension::ELEMENT_NAME_IN_LOWER_CASE, true) |
| ->setFlag(NodeExtension::ATTRIBUTE_NAME_IN_LOWER_CASE, true); |
| } |
| |
| /** |
| * {@inheritdoc} |
| */ |
| public function getPseudoClassTranslators() |
| { |
| return array( |
| 'checked' => array($this, 'translateChecked'), |
| 'link' => array($this, 'translateLink'), |
| 'disabled' => array($this, 'translateDisabled'), |
| 'enabled' => array($this, 'translateEnabled'), |
| 'selected' => array($this, 'translateSelected'), |
| 'invalid' => array($this, 'translateInvalid'), |
| 'hover' => array($this, 'translateHover'), |
| 'visited' => array($this, 'translateVisited'), |
| ); |
| } |
| |
| /** |
| * {@inheritdoc} |
| */ |
| public function getFunctionTranslators() |
| { |
| return array( |
| 'lang' => array($this, 'translateLang'), |
| ); |
| } |
| |
| /** |
| * @param XPathExpr $xpath |
| * |
| * @return XPathExpr |
| */ |
| public function translateChecked(XPathExpr $xpath) |
| { |
| return $xpath->addCondition( |
| '(@checked ' |
| ."and (name(.) = 'input' or name(.) = 'command')" |
| ."and (@type = 'checkbox' or @type = 'radio'))" |
| ); |
| } |
| |
| /** |
| * @param XPathExpr $xpath |
| * |
| * @return XPathExpr |
| */ |
| public function translateLink(XPathExpr $xpath) |
| { |
| return $xpath->addCondition("@href and (name(.) = 'a' or name(.) = 'link' or name(.) = 'area')"); |
| } |
| |
| /** |
| * @param XPathExpr $xpath |
| * |
| * @return XPathExpr |
| */ |
| public function translateDisabled(XPathExpr $xpath) |
| { |
| return $xpath->addCondition( |
| '(' |
| .'@disabled and' |
| .'(' |
| ."(name(.) = 'input' and @type != 'hidden')" |
| ." or name(.) = 'button'" |
| ." or name(.) = 'select'" |
| ." or name(.) = 'textarea'" |
| ." or name(.) = 'command'" |
| ." or name(.) = 'fieldset'" |
| ." or name(.) = 'optgroup'" |
| ." or name(.) = 'option'" |
| .')' |
| .') or (' |
| ."(name(.) = 'input' and @type != 'hidden')" |
| ." or name(.) = 'button'" |
| ." or name(.) = 'select'" |
| ." or name(.) = 'textarea'" |
| .')' |
| .' and ancestor::fieldset[@disabled]' |
| ); |
| // todo: in the second half, add "and is not a descendant of that fieldset element's first legend element child, if any." |
| } |
| |
| /** |
| * @param XPathExpr $xpath |
| * |
| * @return XPathExpr |
| */ |
| public function translateEnabled(XPathExpr $xpath) |
| { |
| return $xpath->addCondition( |
| '(' |
| .'@href and (' |
| ."name(.) = 'a'" |
| ." or name(.) = 'link'" |
| ." or name(.) = 'area'" |
| .')' |
| .') or (' |
| .'(' |
| ."name(.) = 'command'" |
| ." or name(.) = 'fieldset'" |
| ." or name(.) = 'optgroup'" |
| .')' |
| .' and not(@disabled)' |
| .') or (' |
| .'(' |
| ."(name(.) = 'input' and @type != 'hidden')" |
| ." or name(.) = 'button'" |
| ." or name(.) = 'select'" |
| ." or name(.) = 'textarea'" |
| ." or name(.) = 'keygen'" |
| .')' |
| .' and not (@disabled or ancestor::fieldset[@disabled])' |
| .') or (' |
| ."name(.) = 'option' and not(" |
| .'@disabled or ancestor::optgroup[@disabled]' |
| .')' |
| .')' |
| ); |
| } |
| |
| /** |
| * @param XPathExpr $xpath |
| * @param FunctionNode $function |
| * |
| * @return XPathExpr |
| * |
| * @throws ExpressionErrorException |
| */ |
| public function translateLang(XPathExpr $xpath, FunctionNode $function) |
| { |
| $arguments = $function->getArguments(); |
| foreach ($arguments as $token) { |
| if (!($token->isString() || $token->isIdentifier())) { |
| throw new ExpressionErrorException( |
| 'Expected a single string or identifier for :lang(), got ' |
| .implode(', ', $arguments) |
| ); |
| } |
| } |
| |
| return $xpath->addCondition(sprintf( |
| 'ancestor-or-self::*[@lang][1][starts-with(concat(' |
| ."translate(@%s, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), '-')" |
| .', %s)]', |
| 'lang', |
| Translator::getXpathLiteral(strtolower($arguments[0]->getValue()).'-') |
| )); |
| } |
| |
| /** |
| * @param XPathExpr $xpath |
| * |
| * @return XPathExpr |
| */ |
| public function translateSelected(XPathExpr $xpath) |
| { |
| return $xpath->addCondition("(@selected and name(.) = 'option')"); |
| } |
| |
| /** |
| * @param XPathExpr $xpath |
| * |
| * @return XPathExpr |
| */ |
| public function translateInvalid(XPathExpr $xpath) |
| { |
| return $xpath->addCondition('0'); |
| } |
| |
| /** |
| * @param XPathExpr $xpath |
| * |
| * @return XPathExpr |
| */ |
| public function translateHover(XPathExpr $xpath) |
| { |
| return $xpath->addCondition('0'); |
| } |
| |
| /** |
| * @param XPathExpr $xpath |
| * |
| * @return XPathExpr |
| */ |
| public function translateVisited(XPathExpr $xpath) |
| { |
| return $xpath->addCondition('0'); |
| } |
| |
| /** |
| * {@inheritdoc} |
| */ |
| public function getName() |
| { |
| return 'html'; |
| } |
| } |
