WP_Theme_JSON::get_blocks_metadata(): array

1250	protected static function get_blocks_metadata() {1251		$registry       = WP_Block_Type_Registry::get_instance();1252		$blocks         = $registry->get_all_registered();1253		$style_registry = WP_Block_Styles_Registry::get_instance();1254 1255		// Is there metadata for all currently registered blocks?1256		$blocks = array_diff_key( $blocks, static::$blocks_metadata );1257		if ( empty( $blocks ) ) {1258			/*1259			 * New block styles may have been registered within WP_Block_Styles_Registry.1260			 * Update block metadata for any new block style variations.1261			 */1262			$registered_styles = $style_registry->get_all_registered();1263			foreach ( static::$blocks_metadata as $block_name => $block_metadata ) {1264				if ( ! empty( $registered_styles[ $block_name ] ) ) {1265					$style_selectors = $block_metadata['styleVariations'] ?? array();1266 1267					foreach ( $registered_styles[ $block_name ] as $block_style ) {1268						if ( ! isset( $style_selectors[ $block_style['name'] ] ) ) {1269							$style_selectors[ $block_style['name'] ] = static::get_block_style_variation_selector( $block_style['name'], $block_metadata['selector'] );1270						}1271					}1272 1273					static::$blocks_metadata[ $block_name ]['styleVariations'] = $style_selectors;1274				}1275			}1276			return static::$blocks_metadata;1277		}1278 1279		foreach ( $blocks as $block_name => $block_type ) {1280			$root_selector = wp_get_block_css_selector( $block_type );1281 1282			static::$blocks_metadata[ $block_name ]['selector']  = $root_selector;1283			static::$blocks_metadata[ $block_name ]['selectors'] = static::get_block_selectors( $block_type, $root_selector );1284 1285			$elements = static::get_block_element_selectors( $root_selector );1286			if ( ! empty( $elements ) ) {1287				static::$blocks_metadata[ $block_name ]['elements'] = $elements;1288			}1289 1290			// The block may or may not have a duotone selector.1291			$duotone_selector = wp_get_block_css_selector( $block_type, 'filter.duotone' );1292 1293			// Keep backwards compatibility for support.color.__experimentalDuotone.1294			if ( null === $duotone_selector ) {1295				$duotone_support = $block_type->supports['color']['__experimentalDuotone'] ?? null;1296 1297				if ( $duotone_support ) {1298					$root_selector    = wp_get_block_css_selector( $block_type );1299					$duotone_selector = static::scope_selector( $root_selector, $duotone_support );1300				}1301			}1302 1303			if ( null !== $duotone_selector ) {1304				static::$blocks_metadata[ $block_name ]['duotone'] = $duotone_selector;1305			}1306 1307			// If the block has style variations, append their selectors to the block metadata.1308			$style_selectors = array();1309			if ( ! empty( $block_type->styles ) ) {1310				foreach ( $block_type->styles as $style ) {1311					$style_selectors[ $style['name'] ] = static::get_block_style_variation_selector( $style['name'], static::$blocks_metadata[ $block_name ]['selector'] );1312				}1313			}1314 1315			// Block style variations can be registered through the WP_Block_Styles_Registry as well as block.json.1316			$registered_styles = $style_registry->get_registered_styles_for_block( $block_name );1317			foreach ( $registered_styles as $style ) {1318				$style_selectors[ $style['name'] ] = static::get_block_style_variation_selector( $style['name'], static::$blocks_metadata[ $block_name ]['selector'] );1319			}1320 1321			if ( ! empty( $style_selectors ) ) {1322				static::$blocks_metadata[ $block_name ]['styleVariations'] = $style_selectors;1323			}1324		}1325 1326		return static::$blocks_metadata;1327	}