Logo.php

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<?php

namespace SAML2\XML\mdui;

class Logo
{
    public $url;

    public $width;

    public $height;

    public $lang;

    public function __construct(\DOMElement $xml = null)
    {
        if ($xml === null) {
            return;
        }

        if (!$xml->hasAttribute('width')) {
            throw new \Exception('Missing width of Logo.');
        }
        if (!$xml->hasAttribute('height')) {
            throw new \Exception('Missing height of Logo.');
        }
        if (!is_string($xml->textContent) || !strlen($xml->textContent)) {
            throw new \Exception('Missing url value for Logo.');
        }
        $this->url = $xml->textContent;
        $this->width = (int) $xml->getAttribute('width');
        $this->height = (int) $xml->getAttribute('height');
        $this->lang = $xml->hasAttribute('xml:lang') ? $xml->getAttribute('xml:lang') : null;
    }

    public function toXML(\DOMElement $parent)
    {
        assert(is_int($this->width));
        assert(is_int($this->height));
        assert(is_string($this->url));

        $doc = $parent->ownerDocument;

        $e = $doc->createElementNS(Common::NS, 'mdui:Logo');
        $e->appendChild($doc->createTextNode($this->url));
        $e->setAttribute('width', (int) $this->width);
        $e->setAttribute('height', (int) $this->height);
        if (isset($this->lang)) {
            $e->setAttribute('xml:lang', $this->lang);
        }
        $parent->appendChild($e);

        return $e;
    }
}