PageTranslationHookHandler.php

<?php
declare( strict_types = 1 );
 
namespace MediaWiki\Extension\Translate\PageTranslation;
 
use MediaWiki\Context\IContextSource;
use MediaWiki\Hook\LonelyPagesQueryHook;
use MediaWiki\Hook\SpecialPrefixIndexGetFormFiltersHook;
use MediaWiki\Hook\SpecialPrefixIndexQueryHook;
use MediaWiki\Hook\SpecialWhatLinksHereQueryHook;
use MediaWiki\HTMLForm\Field\HTMLCheckField;
use MediaWiki\SpecialPage\Hook\SpecialPageBeforeFormDisplayHook;
use Wikimedia\Rdbms\SelectQueryBuilder;
 
class PageTranslationHookHandler implements
    SpecialPrefixIndexGetFormFiltersHook,
    SpecialPrefixIndexQueryHook,
    LonelyPagesQueryHook,
    SpecialPageBeforeFormDisplayHook,
    SpecialWhatLinksHereQueryHook
{
    public function onSpecialPrefixIndexGetFormFilters( IContextSource $contextSource, array &$filters ) {
        $filters[ 'translate-hidetranslations' ] = [
            'class' => HTMLCheckField::class,
            'name' => 'translate-hidetranslations',
            'label-message' => 'translate-hidetranslations',
        ];
    }
 
    public function onSpecialPrefixIndexQuery( array $fieldData, SelectQueryBuilder $queryBuilder ) {
        if ( $fieldData[ 'translate-hidetranslations' ] === true ) {
            $queryBuilder->leftJoin(
                'page_props',
                'translate_pp',
                [
                    'translate_pp.pp_page=page_id',
                    'translate_pp.pp_propname' => 'translate-is-translation'
                ]
            )->andWhere( [ 'translate_pp.pp_value' => null ] );
        }
    }
 
    public function onLonelyPagesQuery( &$tables, &$conds, &$joinConds ) {
        $tables[ 'translate_pp' ] = 'page_props';
        $joinConds['translate_pp'] = [
            'LEFT JOIN', [
                'translate_pp.pp_page=page_id',
                'translate_pp.pp_propname' => 'translate-is-translation'
            ]
        ];
        $conds['translate_pp.pp_value'] = null;
    }
 
    public function onSpecialPageBeforeFormDisplay( $name, $form ): void {
        // Temporarily disabled: https://phabricator.wikimedia.org/T385139#10559646
        if ( $name === 'Whatlinkshere' ) {
            $form->addFields( [
                'translate-hidetranslations' => [
                    'type' => 'check',
                    'name' => 'translate-hidetranslations',
                    'label-message' => 'translate-hidetranslations',
                    'section' => 'whatlinkshere-filter',
                ]
            ] );
        }
    }
 
    public function onSpecialWhatLinksHereQuery( $table, $data, $queryBuilder ) {
        // Temporarily disabled: https://phabricator.wikimedia.org/T385139#10559646
        $isSupportedTable = in_array( $table, [ 'pagelinks', 'templatelinks', 'imagelinks' ] );
 
        if ( $data[ 'translate-hidetranslations' ] && $isSupportedTable ) {
            $queryBuilder->leftJoin(
                'page_props',
                'translate_pp',
                [
                    'translate_pp.pp_page=page_id',
                    'translate_pp.pp_propname' => 'translate-is-translation',
                ]
            )
            ->andWhere( [ 'translate_pp.pp_value' => null ] );
        }
    }
}