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| <?php | |
| declare( strict_types = 1 ); | |
| namespace Wikimedia\Parsoid\Wt2Html\PP\Handlers; | |
| use Wikimedia\Parsoid\Config\Env; | |
| use Wikimedia\Parsoid\DOM\Element; | |
| use Wikimedia\Parsoid\Utils\DOMCompat; | |
| use Wikimedia\Parsoid\Utils\DOMDataUtils; | |
| use Wikimedia\Parsoid\Utils\DOMUtils; | |
| class DedupeStyles { | |
| /** | |
| * @param Element $node | |
| * @param Env $env | |
| * @return bool|Element | |
| */ | |
| public static function dedupe( Element $node, Env $env ) { | |
| if ( !$node->hasAttribute( 'data-mw-deduplicate' ) ) { | |
| // Not a templatestyles <style> tag | |
| return true; | |
| } | |
| $key = $node->getAttribute( 'data-mw-deduplicate' ); | |
| if ( !isset( $env->styleTagKeys[$key] ) ) { | |
| // Not a dupe | |
| $env->styleTagKeys[$key] = true; | |
| return true; | |
| } | |
| if ( !DOMUtils::isFosterablePosition( $node ) ) { | |
| // Dupe - replace with a placeholder <link> reference | |
| $link = $node->ownerDocument->createElement( 'link' ); | |
| $link->setAttribute( 'rel', 'mw-deduplicated-inline-style' ); | |
| $link->setAttribute( 'href', 'mw-data:' . $key ); | |
| $link->setAttribute( 'about', $node->getAttribute( 'about' ) ?? '' ); | |
| $link->setAttribute( 'typeof', $node->getAttribute( 'typeof' ) ?? '' ); | |
| DOMDataUtils::setDataParsoid( $link, DOMDataUtils::getDataParsoid( $node ) ); | |
| DOMDataUtils::setDataMw( $link, DOMDataUtils::getDataMw( $node ) ); | |
| $node->parentNode->replaceChild( $link, $node ); | |
| return $link; | |
| } else { | |
| $env->log( 'info/wt2html/templatestyle', | |
| 'Duplicate style tag found in fosterable position. ' . | |
| 'Not deduping it, but emptying out the style tag for performance reasons.' | |
| ); | |
| DOMCompat::replaceChildren( $node ); | |
| return true; | |
| } | |
| } | |
| } |