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Direktori : /home2/selectio/www/tnpsctestbatch.com/lib/php-css-parser/lib/Sabberworm/CSS/Property/ |
Current File : /home2/selectio/www/tnpsctestbatch.com/lib/php-css-parser/lib/Sabberworm/CSS/Property/Selector.php |
<?php namespace Sabberworm\CSS\Property; /** * Class representing a single CSS selector. Selectors have to be split by the comma prior to being passed into this class. */ class Selector { //Regexes for specificity calculations const NON_ID_ATTRIBUTES_AND_PSEUDO_CLASSES_RX = '/ (\.[\w]+) # classes | \[(\w+) # attributes | (\:( # pseudo classes link|visited|active |hover|focus |lang |target |enabled|disabled|checked|indeterminate |root |nth-child|nth-last-child|nth-of-type|nth-last-of-type |first-child|last-child|first-of-type|last-of-type |only-child|only-of-type |empty|contains )) /ix'; const ELEMENTS_AND_PSEUDO_ELEMENTS_RX = '/ ((^|[\s\+\>\~]+)[\w]+ # elements | \:{1,2}( # pseudo-elements after|before|first-letter|first-line|selection )) /ix'; private $sSelector; private $iSpecificity; public function __construct($sSelector, $bCalculateSpecificity = false) { $this->setSelector($sSelector); if ($bCalculateSpecificity) { $this->getSpecificity(); } } public function getSelector() { return $this->sSelector; } public function setSelector($sSelector) { $this->sSelector = trim($sSelector); $this->iSpecificity = null; } public function __toString() { return $this->getSelector(); } public function getSpecificity() { if ($this->iSpecificity === null) { $a = 0; /// @todo should exclude \# as well as "#" $aMatches = null; $b = substr_count($this->sSelector, '#'); $c = preg_match_all(self::NON_ID_ATTRIBUTES_AND_PSEUDO_CLASSES_RX, $this->sSelector, $aMatches); $d = preg_match_all(self::ELEMENTS_AND_PSEUDO_ELEMENTS_RX, $this->sSelector, $aMatches); $this->iSpecificity = ($a * 1000) + ($b * 100) + ($c * 10) + $d; } return $this->iSpecificity; } }