ResourceLoaderEditToolbarModule.php

Go to the documentation of this file.

<?php
class ResourceLoaderEditToolbarModule extends ResourceLoaderFileModule {
    private static function cssSerializeString( $value ) {
        if ( strstr( $value, "\0" ) ) {
            throw new Exception( "Invalid character in CSS string" );
        }
        $value = strtr( $value, array( '\\' => '\\\\', '"' => '\\"' ) );
        $value = preg_replace_callback( '/[\x01-\x1f\x7f-\x9f]/', function ( $match ) {
            return '\\' . base_convert( ord( $match[0] ), 10, 16 ) . ' ';
        }, $value );
        return '"' . $value . '"';
    }

    private function getLessVars( ResourceLoaderContext $context ) {
        $language = Language::factory( $context->getLanguage() );

        // This is very conveniently formatted and we can pass it right through
        $vars = $language->getImageFiles();

        // lessc tries to be helpful and parse our variables as LESS source code
        foreach ( $vars as $key => &$value ) {
            $value = self::cssSerializeString( $value );
        }

        return $vars;
    }

    public function getModifiedTime( ResourceLoaderContext $context ) {
        return max(
            parent::getModifiedTime( $context ),
            $this->getHashMtime( $context )
        );
    }

    public function getModifiedHash( ResourceLoaderContext $context ) {
        return md5(
            parent::getModifiedHash( $context ) .
            serialize( $this->getLessVars( $context ) )
        );
    }

    protected function getLessCompiler( ResourceLoaderContext $context = null ) {
        $compiler = parent::getLessCompiler();
        $compiler->setVariables( $this->getLessVars( $context ) );
        return $compiler;
    }
}