DOMImplementation クラス

    (PHP 5, PHP 7, PHP 8)

    はじめに

    DOMImplementation クラスは、 個々のドキュメントオブジェクトモデルのインスタンス独自の操作を行うためのメソッド群を提供します。

    クラス概要

    class DOMImplementation {
    /* メソッド */
    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
    }

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    User Contributed Notes 1 note

    up
    5
    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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