laipower/wp-content/plugins/static-html-output-plugin/plugin/CSSParser/Property/Selector.php
2020-04-07 13:03:04 +00:00

25 lines
1.5 KiB
PHP

<?php
namespace Sabberworm\CSS\Property; class Selector { 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; $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; } }