wp-includes/style-engine/class-wp-style-engine.php:486Returns classnames, and generates classname(s) from a CSS preset property pattern, e.g. var:preset||.
$style_valuestring$style_definitionarraystring[] protected static function get_classnames( $style_value, $style_definition ) { if ( empty( $style_value ) ) { return array(); } $classnames = array(); if ( ! empty( $style_definition['classnames'] ) ) { foreach ( $style_definition['classnames'] as $classname => $property_key ) { if ( true === $property_key ) { $classnames[] = $classname; continue; } $slug = static::get_slug_from_preset_value( $style_value, $property_key ); if ( $slug ) { /* * Right now we expect a classname pattern to be stored in BLOCK_STYLE_DEFINITIONS_METADATA. * One day, if there are no stored schemata, we could allow custom patterns or * generate classnames based on other properties * such as a path or a value or a prefix passed in options. */ $classnames[] = strtr( $classname, array( '$slug' => $slug ) ); } } } return $classnames; }Introduced in 6.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/style-engine/class-wp-style-engine.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.