<?php
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Extension\TableOfContents;
use League\CommonMark\ConfigurableEnvironmentInterface;
use League\CommonMark\Event\DocumentParsedEvent;
use League\CommonMark\Extension\ExtensionInterface;
use League\CommonMark\Extension\TableOfContents\Node\TableOfContentsPlaceholder;
final class TableOfContentsExtension implements ExtensionInterface
{
public function register(ConfigurableEnvironmentInterface $environment): void
{
$environment->addEventListener(DocumentParsedEvent::class, [new TableOfContentsBuilder(), 'onDocumentParsed'], -150);
if ($environment->getConfig('table_of_contents/position') === TableOfContentsBuilder::POSITION_PLACEHOLDER) {
$environment->addBlockParser(new TableOfContentsPlaceholderParser(), 200);
// If a placeholder cannot be replaced with a TOC element this renderer will ensure the parser won't error out
$environment->addBlockRenderer(TableOfContentsPlaceholder::class, new TableOfContentsPlaceholderRenderer());
}
}
}