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