wp_register_block_style_variations_from_theme_json_partials() │ WP 6.6.0

Registers block style variations read in from theme.json partials.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Returns

null. Nothing (null).

Usage

wp_register_block_style_variations_from_theme_json_partials( $variations );
$variations(array) (required)
Shared block style variations.

Changelog

Since 6.6.0 Introduced.

wp_register_block_style_variations_from_theme_json_partials() code WP 6.9.1

wp-includes/block-supports/block-style-variations.php 
function wp_register_block_style_variations_from_theme_json_partials( $variations ) {
	if ( empty( $variations ) ) {
		return;
	}

	$registry = WP_Block_Styles_Registry::get_instance();

	foreach ( $variations as $variation ) {
		if ( empty( $variation['blockTypes'] ) || empty( $variation['styles'] ) ) {
			continue;
		}

		$variation_name  = $variation['slug'] ?? _wp_to_kebab_case( $variation['title'] );
		$variation_label = $variation['title'] ?? $variation_name;

		foreach ( $variation['blockTypes'] as $block_type ) {
			$registered_styles = $registry->get_registered_styles_for_block( $block_type );

			// Register block style variation if it hasn't already been registered.
			if ( ! array_key_exists( $variation_name, $registered_styles ) ) {
				register_block_style(
					$block_type,
					array(
						'name'  => $variation_name,
						'label' => $variation_label,
					)
				);
			}
		}
	}
}