WP_Theme_JSON::get_block_nodes( array $theme_json ): array

Source

	return $nodes;
}

/**
 * Builds metadata for the style nodes, which returns in the form of:
 *
 *     [
 *       [
 *         'path'     => [ 'path', 'to', 'some', 'node' ],
 *         'selector' => 'CSS selector for some node',
 *         'duotone'  => 'CSS selector for duotone for some node'
 *       ],
 *       [
 *         'path'     => ['path', 'to', 'other', 'node' ],
 *         'selector' => 'CSS selector for other node',
 *         'duotone'  => null
 *       ],
 *     ]
 *
 * @since 5.8.0
 *
 * @param array $theme_json The tree to extract style nodes from.
 * @param array $selectors  List of selectors per block.
 * @return array An array of style nodes metadata.
 */
protected static function get_style_nodes( $theme_json, $selectors = array() ) {
	$nodes = array();
	if ( ! isset( $theme_json['styles'] ) ) {
		return $nodes;
	}

	// Top-level.
	$nodes[] = array(
		'path'     => array( 'styles' ),
		'selector' => static::ROOT_BLOCK_SELECTOR,
	);

	if ( isset( $theme_json['styles']['elements'] ) ) {
		foreach ( self::ELEMENTS as $element => $selector ) {
			if ( ! isset( $theme_json['styles']['elements'][ $element ] ) ) {
				continue;
			}
			$nodes[] = array(
				'path'     => array( 'styles', 'elements', $element ),
				'selector' => static::ELEMENTS[ $element ],
			);

			// Handle any pseudo selectors for the element.
			if ( isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element ] ) ) {
				foreach ( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element ] as $pseudo_selector ) {

					if ( isset( $theme_json['styles']['elements'][ $element ][ $pseudo_selector ] ) ) {
						$nodes[] = array(
							'path'     => array( 'styles', 'elements', $element ),
							'selector' => static::append_to_selector( static::ELEMENTS[ $element ], $pseudo_selector ),
						);
					}
				}
			}
		}
	}

	// Blocks.
	if ( ! isset( $theme_json['styles']['blocks'] ) ) {
		return $nodes;
	}

	$block_nodes = static::get_block_nodes( $theme_json );
	foreach ( $block_nodes as $block_node ) {
		$nodes[] = $block_node;
	}

	/**
	 * Filters the list of style nodes with metadata.
	 *
	 * This allows for things like loading block CSS independently.

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