RcFilter.php

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<?php
class TranslateRcFilter {
    public static function translationFilter( &$conds, &$tables, &$join_conds, $opts ) {
        global $wgTranslateMessageNamespaces, $wgTranslateRcFilterDefault;

        $request = RequestContext::getMain()->getRequest();
        $translations = $request->getVal( 'translations', $wgTranslateRcFilterDefault );
        $opts->add( 'translations', $wgTranslateRcFilterDefault );
        $opts->setValue( 'translations', $translations );

        $dbr = wfGetDB( DB_SLAVE );

        $namespaces = array();

        foreach ( $wgTranslateMessageNamespaces as $index ) {
            $namespaces[] = $index;
            $namespaces[] = $index + 1; // Talk too
        }

        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;
    }

    public static function translationFilterForm( &$items, $opts ) {
        $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'] = array( $label, $select->getHTML() );

        return true;
    }
}