Ocubom\Twig\Extension\Svg\Processor\TitleProcessor

Complexity

Total Complexity

4

Size/Duplication

Total Lines	31
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

1 Method

Rating	Name	Duplication	Size	Complexity
A	__invoke()	0	29	4

<?php

/*
 * This file is part of ocubom/twig-svg-extension
 *
 * © Oscar Cubo Medina <https://ocubom.github.io>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Ocubom\Twig\Extension\Svg\Processor;

use Ocubom\Twig\Extension\Svg\Ident;
use Ocubom\Twig\Extension\Svg\Util\DomHelper;

class TitleProcessor implements ProcessorInterface
{
    public function __invoke(\DOMElement $svg, array $options = []): \DOMElement
    {
        if (empty($options['title'])) {
            return $svg; // Do nothing unless title is set
        }

        /** @var \DOMNode $child */
        foreach ($svg->getElementsByTagName('title') as $child) {
            // Remove title nodes directly under main element
            if ($child->parentNode === $svg) {
                DomHelper::removeNode($child);
            }
        }

        // Create title element
        assert($svg->ownerDocument instanceof \DOMDocument);
        $title = $svg->insertBefore(
            $svg->ownerDocument->createElement('title', $options['title']),
            $svg->firstChild
        );
        assert($title instanceof \DOMElement);

        // Generate title identifier
        $id = $options['aria-labelledby'] ?? Ident::generate($title);
        // Reference title identifier with aria attribute
        $title->setAttribute('id', $id);
        $svg->setAttribute('aria-labelledby', $id);

        return $svg;
    }
}