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<?php
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declare(strict_types=1);
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/*
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* This file is part of the league/commonmark package.
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*
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* (c) Colin O'Dell <colinodell@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace League\CommonMark\Extension\DefaultAttributes;
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use League\CommonMark\Event\DocumentParsedEvent;
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use League\CommonMark\Extension\Attributes\Util\AttributesHelper;
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use League\Config\ConfigurationAwareInterface;
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use League\Config\ConfigurationInterface;
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final class ApplyDefaultAttributesProcessor implements ConfigurationAwareInterface
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{
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private ConfigurationInterface $config;
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public function onDocumentParsed(DocumentParsedEvent $event): void
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{
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/** @var array<string, array<string, mixed>> $map */
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$map = $this->config->get('default_attributes');
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// Don't bother iterating if no default attributes are configured
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if (! $map) {
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return;
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}
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foreach ($event->getDocument()->iterator() as $node) {
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// Check to see if any default attributes were defined
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if (($attributesToApply = $map[\get_class($node)] ?? []) === []) {
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continue;
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}
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$newAttributes = [];
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foreach ($attributesToApply as $name => $value) {
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if (\is_callable($value)) {
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$value = $value($node);
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// Callables are allowed to return `null` indicating that no changes should be made
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if ($value !== null) {
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$newAttributes[$name] = $value;
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}
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} else {
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$newAttributes[$name] = $value;
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}
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}
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// Merge these attributes into the node
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if (\count($newAttributes) > 0) {
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$node->data->set('attributes', AttributesHelper::mergeAttributes($node, $newAttributes));
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}
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}
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}
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public function setConfiguration(ConfigurationInterface $configuration): void
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{
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$this->config = $configuration;
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}
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}
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