wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\Repo\Actions;

use Article;
use HistoryAction;
use MediaWiki\Context\IContextSource;
use MediaWiki\Message\Message;
use Wikibase\DataModel\Services\Lookup\LabelDescriptionLookup;
use Wikibase\Lib\Store\EntityIdLookup;

/**
 * Handles the history action for Wikibase entities.
 *
 * @license GPL-2.0-or-later
 * @author John Erling Blad < jeblad@gmail.com >
 * @author Adrian Heine <adrian.heine@wikimedia.de>
 */
class HistoryEntityAction extends HistoryAction {

    /**
     * @var EntityIdLookup
     */
    private $entityIdLookup;

    /**
     * @var LabelDescriptionLookup
     */
    private $labelLookup;

    /**
     * @param Article $article
     * @param IContextSource $context
     * @param EntityIdLookup $entityIdLookup
     * @param LabelDescriptionLookup $labelLookup
     */
    public function __construct(
        Article $article,
        IContextSource $context,
        EntityIdLookup $entityIdLookup,
        LabelDescriptionLookup $labelLookup
    ) {
        parent::__construct( $article, $context );

        $this->entityIdLookup = $entityIdLookup;
        $this->labelLookup = $labelLookup;
    }

    /**
     * Return a Message for use as title.
     *
     * @return Message
     */
    protected function getPageTitle() {
        $entityId = $this->entityIdLookup->getEntityIdForTitle( $this->getTitle() );

        if ( !$entityId ) {
            return parent::getPageTitle();
        }

        $idSerialization = $entityId->getSerialization();
        $label = $this->labelLookup->getLabel( $entityId );

        if ( $label !== null ) {
            $labelText = $label->getText();
            return $this->msg( 'wikibase-history-title-with-label' )
                ->plaintextParams( $idSerialization, $labelText );
        } else {
            return $this->msg( 'wikibase-history-title-without-label' )
                ->plaintextParams( $idSerialization );
        }
    }

}