Current File : /www/varak.net/wiki.varak.net/includes/resourceloader/ResourceLoaderLessVarFileModule.php
<?php
/**
* Subclass with context specific LESS variables
*/
class ResourceLoaderLessVarFileModule extends ResourceLoaderFileModule {
protected $lessVariables = [];
/**
* @inheritDoc
*/
public function __construct(
$options = [],
$localBasePath = null,
$remoteBasePath = null
) {
if ( isset( $options['lessMessages'] ) ) {
$this->lessVariables = $options['lessMessages'];
}
parent::__construct( $options, $localBasePath, $remoteBasePath );
}
/**
* @inheritDoc
*/
public function getMessages() {
// Overload so MessageBlobStore can detect updates to messages and purge as needed.
return array_merge( $this->messages, $this->lessVariables );
}
/**
* Exclude a set of messages from a JSON string representation
*
* @param string $blob
* @param array $exclusions
* @return array $blob
*/
protected function excludeMessagesFromBlob( $blob, $exclusions ) {
$data = json_decode( $blob, true );
// unset the LESS variables so that they are not forwarded to JavaScript
foreach ( $exclusions as $key ) {
unset( $data[$key] );
}
return (object)$data;
}
/**
* @inheritDoc
*/
protected function getMessageBlob( ResourceLoaderContext $context ) {
$blob = parent::getMessageBlob( $context );
return json_encode( $this->excludeMessagesFromBlob( $blob, $this->lessVariables ) );
}
/**
* Takes a message and wraps it in quotes for compatibility with LESS parser
* (ModifyVars) method so that the variable can be loaded and made available to stylesheets.
* Note this does not take care of CSS escaping. That will be taken care of as part
* of CSS Janus.
*
* @param string $msg
* @return string wrapped LESS variable definition
*/
private static function wrapAndEscapeMessage( $msg ) {
return str_replace( "'", "\'", CSSMin::serializeStringValue( $msg ) );
}
/**
* Get language-specific LESS variables for this module.
*
* @param ResourceLoaderContext $context
* @return array LESS variables
*/
protected function getLessVars( ResourceLoaderContext $context ) {
$blob = parent::getMessageBlob( $context );
$lessMessages = $this->excludeMessagesFromBlob( $blob, $this->messages );
$vars = parent::getLessVars( $context );
foreach ( $lessMessages as $msgKey => $value ) {
$vars['msg-' . $msgKey] = self::wrapAndEscapeMessage( $value );
}
return $vars;
}
}
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