HTMLSelectLanguageField.php

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<?php
 
class HTMLSelectLanguageField extends HTMLSelectField {
    public function __construct( $params ) {
        parent::__construct( $params );
 
        if ( $this->mParent instanceof HTMLForm ) {
            $config = $this->mParent->getConfig();
            $languageCode = $config->get( 'LanguageCode' );
        } else {
            global $wgLanguageCode;
            $languageCode = $wgLanguageCode;
        }
 
        $languages = Language::fetchLanguageNames( null, 'mw' );
 
        // Make sure the site language is in the list;
        // a custom language code might not have a defined name…
        if ( !array_key_exists( $languageCode, $languages ) ) {
            $languages[$languageCode] = $languageCode;
        }
 
        ksort( $languages );
 
        foreach ( $languages as $code => $name ) {
            $this->mParams['options'][$code . ' - ' . $name] = $code;
        }
 
        if ( !array_key_exists( 'default', $params ) ) {
            $this->mParams['default'] = $languageCode;
        }
    }
}