TranslateRcFilter.php

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<?php
class TranslateRcFilter {
    public static function translationFilter( $pageName, &$tables, &$fields, &$conds,
        &$query_options, &$join_conds, FormOptions $opts
    ) {
        global $wgTranslateRcFilterDefault;
 
        if ( $pageName !== 'Recentchanges' || self::isStructuredFilterUiEnabled() ) {
            return true;
        }
 
        $request = RequestContext::getMain()->getRequest();
        $translations = $request->getVal( 'translations', $wgTranslateRcFilterDefault );
        $opts->add( 'translations', $wgTranslateRcFilterDefault );
        $opts->setValue( 'translations', $translations );
 
        $dbr = wfGetDB( DB_REPLICA );
 
        $namespaces = self::getTranslateNamespaces();
 
        if ( $translations === 'only' ) {
            $conds[] = 'rc_namespace IN (' . $dbr->makeList( $namespaces ) . ')';
            $conds[] = 'rc_title like \'%%/%%\'';
        } elseif ( $translations === 'filter' ) {
            $conds[] = 'rc_namespace NOT IN (' . $dbr->makeList( $namespaces ) . ')';
        } elseif ( $translations === 'site' ) {
            $conds[] = 'rc_namespace IN (' . $dbr->makeList( $namespaces ) . ')';
            $conds[] = 'rc_title not like \'%%/%%\'';
        }
 
        return true;
    }
 
    private static function getTranslateNamespaces() {
        global $wgTranslateMessageNamespaces;
        $namespaces = [];
 
        foreach ( $wgTranslateMessageNamespaces as $index ) {
            $namespaces[] = $index;
            $namespaces[] = $index + 1; // Include Talk namespaces
        }
 
        return $namespaces;
    }
 
    public static function translationFilterForm( &$items, $opts ) {
        if ( self::isStructuredFilterUiEnabled() ) {
            return true;
        }
 
        $opts->consumeValue( 'translations' );
        $default = $opts->getValue( 'translations' );
 
        $label = Xml::label(
            wfMessage( 'translate-rc-translation-filter' )->text(),
            'mw-translation-filter'
        );
        $select = new XmlSelect( 'translations', 'mw-translation-filter', $default );
        $select->addOption(
            wfMessage( 'translate-rc-translation-filter-no' )->text(),
            'noaction'
        );
        $select->addOption( wfMessage( 'translate-rc-translation-filter-only' )->text(), 'only' );
        $select->addOption(
            wfMessage( 'translate-rc-translation-filter-filter' )->text(),
            'filter'
        );
        $select->addOption( wfMessage( 'translate-rc-translation-filter-site' )->text(), 'site' );
 
        $items['translations'] = [ $label, $select->getHTML() ];
 
        return true;
    }
 
    private static function isStructuredFilterUiEnabled() {
        $context = RequestContext::getMain();
 
        // This assumes usage only on RC page
        $page = new SpecialRecentChanges();
        $page->setContext( $context );
 
        // isStructuredFilterUiEnabled used to be a protected method in older versions :(
        return is_callable( [ $page, 'isStructuredFilterUiEnabled' ] ) &&
            $page->isStructuredFilterUiEnabled();
    }
 
    public static function onChangesListSpecialPageStructuredFilters(
        ChangesListSpecialPage $special
    ) {
        global $wgTranslateRcFilterDefault;
        $defaultFilter = $wgTranslateRcFilterDefault !== 'noaction' ?
            $wgTranslateRcFilterDefault :
            ChangesListStringOptionsFilterGroup::NONE;
 
        $translationsGroup = new ChangesListStringOptionsFilterGroup(
            [
                'name' => 'translations',
                'title' => 'translate-rcfilters-translations',
                'priority' => -7,
                'default' => $defaultFilter,
                'isFullCoverage' => true,
                'filters' => [
                    [
                        'name' => 'only',
                        'label' => 'translate-rcfilters-translations-only-label',
                        'description' => 'translate-rcfilters-translations-only-desc',
                        'cssClassSuffix' => 'only',
                        'isRowApplicableCallable' => function ( $ctx, $rc ) {
                            $namespaces = self::getTranslateNamespaces();
 
                            return in_array( $rc->getAttribute( 'rc_namespace' ), $namespaces ) &&
                                strpos( $rc->getAttribute( 'rc_title' ), '/' ) !== false;
                        }
                    ],
                    [
                        'name' => 'site',
                        'label' => 'translate-rcfilters-translations-site-label',
                        'description' => 'translate-rcfilters-translations-site-desc',
                        'cssClassSuffix' => 'site',
                        'isRowApplicableCallable' => function ( $ctx, $rc ) {
                            $namespaces = self::getTranslateNamespaces();
 
                            return in_array( $rc->getAttribute( 'rc_namespace' ), $namespaces ) &&
                                strpos( $rc->getAttribute( 'rc_title' ), '/' ) === false;
                        }
                    ],
                    [
                        'name' => 'filter',
                        'label' => 'translate-rcfilters-translations-filter-label',
                        'description' => 'translate-rcfilters-translations-filter-desc',
                        'cssClassSuffix' => 'filter',
                        'isRowApplicableCallable' => function ( $ctx, $rc ) {
                            $namespaces = self::getTranslateNamespaces();
 
                            return !in_array( $rc->getAttribute( 'rc_namespace' ), $namespaces );
                        }
                    ],
                ],
                'queryCallable' => function ( $specialClassName, $ctx, $dbr, &$tables,
                    &$fields, &$conds, &$query_options, &$join_conds, $selectedValues
                ) {
                    $fields = array_merge( $fields, [ 'rc_title', 'rc_namespace' ] );
 
                    $namespaces = self::getTranslateNamespaces();
                    $inNamespaceCond = 'rc_namespace IN (' .
                        $dbr->makeList( $namespaces ) . ')';
                    $notInNamespaceCond = 'rc_namespace NOT IN (' .
                        $dbr->makeList( $namespaces ) . ')';
 
                    $onlyCond = $dbr->makeList( [
                        $inNamespaceCond,
                        'rc_title ' .
                            $dbr->buildLike( $dbr->anyString(), '/', $dbr->anyString() )
                    ], LIST_AND );
                    $siteCond = $dbr->makeList( [
                        $inNamespaceCond,
                        'rc_title NOT' .
                            $dbr->buildLike( $dbr->anyString(), '/', $dbr->anyString() )
                    ], LIST_AND );
 
                    if ( count( $selectedValues ) === 3 ) {
                        // no filters
                        return;
                    }
 
                    if ( $selectedValues === [ 'filter', 'only' ] ) {
                        $conds[] = $dbr->makeList( [
                            $notInNamespaceCond,
                            $onlyCond
                        ], LIST_OR );
                        return;
                    }
 
                    if ( $selectedValues === [ 'filter', 'site' ] ) {
                        $conds[] = $dbr->makeList( [
                            $notInNamespaceCond,
                            $siteCond
                        ], LIST_OR );
                        return;
                    }
 
                    if ( $selectedValues === [ 'only', 'site' ] ) {
                        $conds[] = $inNamespaceCond;
                        return;
                    }
 
                    if ( $selectedValues === [ 'filter' ] ) {
                        $conds[] = $notInNamespaceCond;
                        return;
                    }
 
                    if ( $selectedValues === [ 'only' ] ) {
                        $conds[] = $onlyCond;
                        return;
                    }
 
                    if ( $selectedValues === [ 'site' ] ) {
                        $conds[] = $siteCond;
                    }
                }
            ]
        );
 
        $special->registerFilterGroup( $translationsGroup );
        return true;
    }
}