wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\Repo;

use MediaWiki\Language\Language;
use Wikibase\DataModel\Services\EntityId\EntityIdFormatter;
use Wikibase\Lib\Formatters\DispatchingEntityIdHtmlLinkFormatter;
use Wikibase\Lib\Formatters\NonExistingEntityIdHtmlFormatter;
use Wikibase\Lib\Formatters\SnakFormatter;
use Wikibase\Lib\Formatters\UnknownTypeEntityIdHtmlLinkFormatter;
use Wikibase\Lib\Store\EntityTitleLookup;
use Wikibase\View\EntityIdFormatterFactory;
use Wikimedia\Assert\Assert;

/**
 * A factory for generating EntityIdFormatter returning HTML.
 *
 * @license GPL-2.0-or-later
 * @author Daniel Kinzler
 */
class EntityIdHtmlLinkFormatterFactory implements EntityIdFormatterFactory {

    /**
     * @var EntityTitleLookup
     */
    private $titleLookup;

    /**
     * @var callable[]
     */
    private $formatterCallbacks;

    public function __construct(
        EntityTitleLookup $titleLookup,
        array $formatterCallbacks = []
    ) {
        Assert::parameterElementType( 'callable', $formatterCallbacks, '$formatterCallbacks' );

        $this->formatterCallbacks = $formatterCallbacks;
        $this->titleLookup = $titleLookup;
    }

    /**
     * @see EntityIdFormatterFactory::getOutputFormat
     *
     * @return string SnakFormatter::FORMAT_HTML
     */
    public function getOutputFormat() {
        return SnakFormatter::FORMAT_HTML;
    }

    /**
     * @see EntityIdFormatterFactory::getEntityIdFormatter
     *
     * @param Language $language
     *
     * @return EntityIdFormatter
     */
    public function getEntityIdFormatter( Language $language ) {
        return new DispatchingEntityIdHtmlLinkFormatter(
            $this->buildFormatters( $language ),
            new UnknownTypeEntityIdHtmlLinkFormatter(
                $this->titleLookup,
                new NonExistingEntityIdHtmlFormatter( 'wikibase-deletedentity-' )
            )
        );
    }

    /**
     * @param Language $language
     *
     * @return EntityIdFormatter[]
     */
    private function buildFormatters( Language $language ) {
        $formatters = [];

        foreach ( $this->formatterCallbacks as $type => $func ) {
            $formatters[ $type ] = call_user_func( $func, $language );
        }

        return $formatters;
    }

}