WP_Theme_JSON::compute_preset_classes( array $settings, string $selector )

Source

File: wp-includes/class-wp-theme-json.php

private static function compute_preset_classes( $settings, $selector ) {
		if ( self::ROOT_BLOCK_SELECTOR === $selector ) {
			// Classes at the global level do not need any CSS prefixed,
			// and we don't want to increase its specificity.
			$selector = '';
		}

		$stylesheet = '';
		foreach ( self::PRESETS_METADATA as $preset ) {
			$preset_per_origin = _wp_array_get( $settings, $preset['path'], array() );
			$preset_by_slug    = self::get_merged_preset_by_slug( $preset_per_origin, $preset['value_key'] );
			foreach ( $preset['classes'] as $class ) {
				foreach ( $preset_by_slug as $slug => $value ) {
					$stylesheet .= self::to_ruleset(
						self::append_to_selector( $selector, '.has-' . _wp_to_kebab_case( $slug ) . '-' . $class['class_suffix'] ),
						array(
							array(
								'name'  => $class['property_name'],
								'value' => 'var(--wp--preset--' . $preset['css_var_infix'] . '--' . _wp_to_kebab_case( $slug ) . ') !important',
							),
						)
					);
				}
			}
		}

		return $stylesheet;
	}