ResourceLoaderUserCSSPrefsModule.php

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<?php
class ResourceLoaderUserCSSPrefsModule extends ResourceLoaderModule {

        /* Protected Members */

        protected $modifiedTime = array();

        protected $origin = self::ORIGIN_CORE_INDIVIDUAL;

        /* Methods */

        public function getModifiedTime( ResourceLoaderContext $context ) {
                $hash = $context->getHash();
                if ( isset( $this->modifiedTime[$hash] ) ) {
                        return $this->modifiedTime[$hash];
                }

                global $wgUser;
                return $this->modifiedTime[$hash] = wfTimestamp( TS_UNIX, $wgUser->getTouched() );
        }
        
        public function getStyles( ResourceLoaderContext $context ) {
                global $wgAllowUserCssPrefs, $wgUser;

                if ( $wgAllowUserCssPrefs ) {
                        $options = $wgUser->getOptions();

                        // Build CSS rules
                        $rules = array();

                        // Underline: 2 = browser default, 1 = always, 0 = never
                        if ( $options['underline'] < 2 ) {
                                $rules[] = "a { text-decoration: " .
                                        ( $options['underline'] ? 'underline' : 'none' ) . "; }";
                        } else {
                                # The scripts of these languages are very hard to read with underlines
                                $rules[] = 'a:lang(ar), a:lang(ckb), a:lang(fa),a:lang(kk-arab), ' .
                                'a:lang(mzn), a:lang(ps), a:lang(ur) { text-decoration: none; }';
                        }
                        if ( $options['justify'] ) {
                                $rules[] = "#article, #bodyContent, #mw_content { text-align: justify; }\n";
                        }
                        if ( !$options['showtoc'] ) {
                                $rules[] = "#toc { display: none; }\n";
                        }
                        if ( !$options['editsection'] ) {
                                $rules[] = ".editsection { display: none; }\n";
                        }
                        if ( $options['editfont'] !== 'default' ) {
                                // Double-check that $options['editfont'] consists of safe characters only
                                if ( preg_match( '/^[a-zA-Z0-9_, -]+$/', $options['editfont'] ) ) {
                                        $rules[] = "textarea { font-family: {$options['editfont']}; }\n";
                                }
                        }
                        $style = implode( "\n", $rules );
                        if ( $this->getFlip( $context ) ) {
                                $style = CSSJanus::transform( $style, true, false );
                        }
                        return array( 'all' => $style );
                }
                return array();
        }

        public function getGroup() {
                return 'private';
        }

        public function getDependencies() {
                return array( 'mediawiki.user' );
        }
}