WP_Theme_JSON::get_blocks_metadata()

Source

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

private static function get_blocks_metadata() {
		if ( null !== self::$blocks_metadata ) {
			return self::$blocks_metadata;
		}

		self::$blocks_metadata = array();

		$registry = WP_Block_Type_Registry::get_instance();
		$blocks   = $registry->get_all_registered();
		foreach ( $blocks as $block_name => $block_type ) {
			if (
				isset( $block_type->supports['__experimentalSelector'] ) &&
				is_string( $block_type->supports['__experimentalSelector'] )
			) {
				self::$blocks_metadata[ $block_name ]['selector'] = $block_type->supports['__experimentalSelector'];
			} else {
				self::$blocks_metadata[ $block_name ]['selector'] = '.wp-block-' . str_replace( '/', '-', str_replace( 'core/', '', $block_name ) );
			}

			/*
			 * Assign defaults, then overwrite those that the block sets by itself.
			 * If the block selector is compounded, will append the element to each
			 * individual block selector.
			 */
			$block_selectors = explode( ',', self::$blocks_metadata[ $block_name ]['selector'] );
			foreach ( self::ELEMENTS as $el_name => $el_selector ) {
				$element_selector = array();
				foreach ( $block_selectors as $selector ) {
					$element_selector[] = $selector . ' ' . $el_selector;
				}
				self::$blocks_metadata[ $block_name ]['elements'][ $el_name ] = implode( ',', $element_selector );
			}
		}

		return self::$blocks_metadata;
	}