La classe DOMImplementation

(PHP 5, PHP 7, PHP 8)

Introduction

La classe DOMImplementation fournit des méthodes pour effectuer des opérations qui sont indépendantes d'une instance particulière du modèle objet d'un document.

Synopsis de la classe

class DOMImplementation {
/* Méthodes */
public createDocument(?string $namespace = null, string $qualifiedName = "", ?DOMDocumentType $doctype = null): DOMDocument
public createDocumentType(string $qualifiedName, string $publicId = "", string $systemId = ""): DOMDocumentType|false
public hasFeature(string $feature, string $version): bool
}

Sommaire

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User Contributed Notes 1 note

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6
LANGE.LUDO
10 years ago
Ok got it working like a charm using "proxy pattern" with traits. The idea being declaring the common methods inside a "trait" in order for extended and registered Node Classes to have access even if not derived / child of the extended DOMNode…

Here a small snippet :
<?php
namespace my;

trait
tNode
{ // We need the magic method __get in order to add properties such as DOMNode->parentElement
public function __get($name)
{ if(
property_exists($this, $name)){return $this->$name;}
if(
method_exists($this, $name)){return $this->$name();}
throw new
\ErrorException('my\\Node property \''.(string) $name.'\' not found…', 42, E_USER_WARNING);
}

// parentElement property definition
private function parentElement()
{ if(
$this->parentNode === null){return null;}
if(
$this->parentNode->nodeType === XML_ELEMENT_NODE){return $this->parentNode;}
return
$this->parentNode->parentElement();
}

// JavaScript equivalent
public function isEqualNode(\DOMNode $node){return $this->isSameNode($node);}
public function
compareDocumentPosition(\DOMNode $otherNode)
{ if(
$this->ownerDocument !== $otherNode->ownerDocument){return DOCUMENT_POSITION_DISCONNECTED;}
$c = strcmp($this->getNodePath(), $otherNode->getNodePath());
if(
$c === 0){return 0;}
else if(
$c < 0){return DOCUMENT_POSITION_FOLLOWING | ($c < -1 ? DOCUMENT_POSITION_CONTAINED_BY : 0);}
return
DOCUMENT_POSITION_PRECEDING | ($c > 1 ? DOCUMENT_POSITION_CONTAINS : 0);
}
public function
contains(\DOMNode $otherNode){return ($this->compareDocumentPosition($otherNode) >= DOCUMENT_POSITION_CONTAINED_BY);}
}

class
Document extends \DomDocument
{ public function __construct($version=null, $encoding=null)
{
parent::__construct($version, $encoding);
$this->registerNodeClass('DOMNode', 'my\Node');
$this->registerNodeClass('DOMElement', 'my\Element');
$this->registerNodeClass('DOMDocument', 'my\Document');
/* [...] */
}
}

class
Element extends \DOMElement
{ use tNode;
/* [...] */
}

class
Node extends \DOMNode
{ use tNode;
/* [...] */
}

?>
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