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<?php /** * @package Warp Theme Framework * @author YOOtheme http://www.yootheme.com * @copyright Copyright (C) YOOtheme GmbH * @license http://www.gnu.org/licenses/gpl.html GNU/GPL */ namespace Warp\Dom; /** * DOM document class with extended attributes and functions. */ class Document extends \DOMDocument { /** * @var object */ public $xpath; public function __construct($version = '1.0', $encoding = 'UTF-8') { parent::__construct($version, $encoding); // set node class $this->registerNodeClass('DOMElement', 'Warp\Dom\Element'); } public function first($query) { if ($matches = $this->find($query)) { if ($matches->length) { return $matches->item(0); } } return null; } public function find($query) { return $this->xpath()->query(CssSelector::toXPath($query, 'descendant::')); } public function query($expression) { return $this->xpath()->query($expression); } public function xpath() { if (empty($this->xpath)) { $this->xpath = new \DOMXPath($this); } return $this->xpath; } }
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