neerolyte/php-lyte-xml

<?php
namespace Lyte\XML;
/**
 * Some generalised decorating behaviour
 */
class XMLDecorator {
    /**
     * What we're currently decorating
     */
    protected $decorated = null;

    public function __construct($obj = null) {
        $this->decorated = $this->undecorate($obj);
    }

    /**
     * Make the underlying decorated node accessible
     */
    public function getDecorated() {
        return $this->decorated;
    }

    /**
     * Catch calls to us and pass through to our decorated object
     */
    public function __call($name, $origArgs) {
        $args = array();

        // check through the arguments and undecorate anything before passing through
        foreach ($origArgs as $arg) {
            $args []= $this->undecorate($arg);
        }

        $ret = call_user_func_array(array($this->decorated, $name), $args);
        return $this->decorate($ret);
    }

    /**
     * Decorate one of the XML classes back to a LyteXML class
     */
    public function decorate($obj) {
        // convert certain classes back to their decorated versions
        if ($obj instanceof \DOMDocument)
            return new DOMDocument($obj);
        if ($obj instanceof \DOMElement)
            return new DOMElement($obj);
        if ($obj instanceof \DOMNode)
            return new DOMNode($obj);
        if ($obj instanceof \DOMNodeList)
            return new DOMNodeList($obj);
        return $obj;
    }

    /**
     * Reverse decoration (if applied)
     */
    public function undecorate($obj) {
        if ($obj instanceof XMLDecorator)
            return $obj->decorated;
        else
            return $obj;
    }

    /**
     * Catch references to properties and pass them through to the decorated
     * DOMDocument
     */
    public function __get($name) {
        return $this->decorate($this->decorated->$name);
    }
}