LanguageEventIngress.php

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<?php
 
namespace MediaWiki\Languages;
 
use MediaWiki\DomainEvent\EventSubscriberBase;
use MediaWiki\Revision\SlotRecord;
use MediaWiki\Storage\PageUpdatedEvent;
use MessageCache;
 
class LanguageEventIngress extends EventSubscriberBase {
 
    private MessageCache $messageCache;
 
    public const OBJECT_SPEC = [
        'class' => self::class,
        'services' => [
            'MessageCache'
        ],
        'events' => [
            PageUpdatedEvent::TYPE
        ],
    ];
 
    public function __construct( MessageCache $messageCache ) {
        $this->messageCache = $messageCache;
    }
 
    public function handlePageUpdatedEventAfterCommit( PageUpdatedEvent $event ) {
        if ( $event->getPage()->getNamespace() === NS_MEDIAWIKI
            && $event->isModifiedSlot( SlotRecord::MAIN )
        ) {
            $content = $event->getNewRevision()->getMainContentRaw();
            $this->messageCache->updateMessageOverride( $event->getPage(), $content );
        }
    }
 
}