is filter is documented in wp-includes/class-wp-theme-json-resolver.php */ $theme_json = apply_filters( 'wp_theme_json_data_user', new WP_Theme_JSON_Data( $config, 'custom' ) ); /* * Backward compatibility for extenders returning a WP_Theme_JSON_Data * compatible class that is not a WP_Theme_JSON_Data object. */ if ( $theme_json instanceof WP_Theme_JSON_Data ) { static::$user = $theme_json->get_theme_json(); } else { $config = $theme_json->get_data(); static::$user = new WP_Theme_JSON( $config, 'custom' ); } return static::$user; } /** * Returns the data merged from multiple origins. * * There are four sources of data (origins) for a site: * * - default => WordPress * - blocks => each one of the blocks provides data for itself * - theme => the active theme * - custom => data provided by the user * * The custom's has higher priority than the theme's, the theme's higher than blocks', * and block's higher than default's. * * Unlike the getters * {@link https://developer.wordpress.org/reference/classes/wp_theme_json_resolver/get_core_data/ get_core_data}, * {@link https://developer.wordpress.org/reference/classes/wp_theme_json_resolver/get_theme_data/ get_theme_data}, * and {@link https://developer.wordpress.org/reference/classes/wp_theme_json_resolver/get_user_data/ get_user_data}, * this method returns data after it has been merged with the previous origins. * This means that if the same piece of data is declared in different origins * (default, blocks, theme, custom), the last origin overrides the previous. * * For example, if the user has set a background color * for the paragraph block, and the theme has done it as well, * the user preference wins. * * @since 5.8.0 * @since 5.9.0 Added user data, removed the `$settings` parameter, * added the `$origin` parameter. * @since 6.1.0 Added block data and generation of spacingSizes array. * @since 6.2.0 Changed ' $origin' parameter values to 'default', 'blocks', 'theme' or 'custom'. * * @param string $origin Optional. To what level should we merge data: 'default', 'blocks', 'theme' or 'custom'. * 'custom' is used as default value as well as fallback value if the origin is unknown. * @return WP_Theme_JSON */ public static function get_merged_data( $origin = 'custom' ) { if ( is_array( $origin ) ) { _deprecated_argument( __FUNCTION__, '5.9.0' ); } $result = new WP_Theme_JSON(); $result->merge( static::get_core_data() ); if ( 'default' === $origin ) { return $result; } $result->merge( static::get_block_data() ); if ( 'blocks' === $origin ) { return $result; } $result->merge( static::get_theme_data() ); if ( 'theme' === $origin ) { return $result; } $result->merge( static::get_user_data() ); return $result; } /** * Returns the ID of the custom post type * that stores user data. * * @since 5.9.0 * * @return integer|null */ public static function get_user_global_styles_post_id() { if ( null !== static::$user_custom_post_type_id ) { return static::$user_custom_post_type_id; } $user_cpt = static::get_user_data_from_wp_global_styles( wp_get_theme(), true ); if ( array_key_exists( 'ID', $user_cpt ) ) { static::$user_custom_post_type_id = $user_cpt['ID']; } return static::$user_custom_post_type_id; } /** * Determines whether the active theme has a theme.json file. * * @since 5.8.0 * @since 5.9.0 Added a check in the parent theme. * @deprecated 6.2.0 Use wp_theme_has_theme_json() instead. * * @return bool */ public static function theme_has_support() { _deprecated_function( __METHOD__, '6.2.0', 'wp_theme_has_theme_json()' ); return wp_theme_has_theme_json(); } /** * Builds the path to the given file and checks that it is readable. * * If it isn't, returns an empty string, otherwise returns the whole file path. * * @since 5.8.0 * @since 5.9.0 Adapted to work with child themes, added the `$template` argument. * * @param string $file_name Name of the file. * @param bool $template Optional. Use template theme directory. Default false. * @return string The whole file path or empty if the file doesn't exist. */ protected static function get_file_path_from_theme( $file_name, $template = false ) { $path = $template ? get_template_directory() : get_stylesheet_directory(); $candidate = $path . '/' . $file_name; return is_readable( $candidate ) ? $candidate : ''; } /** * Cleans the cached data so it can be recalculated. * * @since 5.8.0 * @since 5.9.0 Added the `$user`, `$user_custom_post_type_id`, * and `$i18n_schema` variables to reset. * @since 6.1.0 Added the `$blocks` and `$blocks_cache` variables * to reset. */ public static function clean_cached_data() { static::$core = null; static::$blocks = null; static::$blocks_cache = array( 'core' => array(), 'blocks' => array(), 'theme' => array(), 'user' => array(), ); static::$theme = null; static::$user = null; static::$user_custom_post_type_id = null; static::$i18n_schema = null; } /** * Returns an array of all nested JSON files within a given directory. * * @since 6.2.0 * * @param string $dir The directory to recursively iterate and list files of. * @return array The merged array. */ private static function recursively_iterate_json( $dir ) { $nested_files = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $dir ) ); $nested_json_files = iterator_to_array( new RegexIterator( $nested_files, '/^.+\.json$/i', RecursiveRegexIterator::GET_MATCH ) ); return $nested_json_files; } /** * Determines if a supplied style variation matches the provided scope. * * For backwards compatibility, if a variation does not define any scope * related property, e.g. `blockTypes`, it is assumed to be a theme style * variation. * * @since 6.6.0 * * @param array $variation Theme.json shaped style variation object. * @param string $scope Scope to check e.g. theme, block etc. * @return boolean */ private static function style_variation_has_scope( $variation, $scope ) { if ( 'block' === $scope ) { return isset( $variation['blockTypes'] ); } if ( 'theme' === $scope ) { return ! isset( $variation['blockTypes'] ); } return false; } /** * Returns the style variations defined by the theme. * * @since 6.0.0 * @since 6.2.0 Returns parent theme variations if theme is a child. * @since 6.6.0 Added configurable scope parameter to allow filtering * theme.json partial files by the scope to which they * can be applied e.g. theme vs block etc. * Added basic caching for read theme.json partial files. * * @param string $scope The scope or type of style variation to retrieve e.g. theme, block etc. * @return array */ public static function get_style_variations( $scope = 'theme' ) { $variation_files = array(); $variations = array(); $base_directory = get_stylesheet_directory() . '/styles'; $template_directory = get_template_directory() . '/styles'; if ( is_dir( $base_directory ) ) { $variation_files = static::recursively_iterate_json( $base_directory ); } if ( is_dir( $template_directory ) && $template_directory !== $base_directory ) { $variation_files_parent = static::recursively_iterate_json( $template_directory ); // If the child and parent variation file basename are the same, only include the child theme's. foreach ( $variation_files_parent as $parent_path => $parent ) { foreach ( $variation_files as $child_path => $child ) { if ( basename( $parent_path ) === basename( $child_path ) ) { unset( $variation_files_parent[ $parent_path ] ); } } } $variation_files = array_merge( $variation_files, $variation_files_parent ); } ksort( $variation_files ); foreach ( $variation_files as $path => $file ) { $decoded_file = self::read_json_file( $path ); if ( is_array( $decoded_file ) && static::style_variation_has_scope( $decoded_file, $scope ) ) { $translated = static::translate( $decoded_file, wp_get_theme()->get( 'TextDomain' ) ); $variation = ( new WP_Theme_JSON( $translated ) )->get_raw_data(); if ( empty( $variation['title'] ) ) { $variation['title'] = basename( $path, '.json' ); } $variations[] = $variation; } } return $variations; } /** * Resolves relative paths in theme.json styles to theme absolute paths * and returns them in an array that can be embedded * as the value of `_link` object in REST API responses. * * @since 6.6.0 * * @param WP_Theme_JSON $theme_json A theme json instance. * @return array An array of resolved paths. */ public static function get_resolved_theme_uris( $theme_json ) { $resolved_theme_uris = array(); if ( ! $theme_json instanceof WP_Theme_JSON ) { return $resolved_theme_uris; } $theme_json_data = $theme_json->get_raw_data(); // Top level styles. $background_image_url = isset( $theme_json_data['styles']['background']['backgroundImage']['url'] ) ? $theme_json_data['styles']['background']['backgroundImage']['url'] : null; /* * The same file convention when registering web fonts. * See: WP_Font_Face_Resolver::to_theme_file_uri. */ $placeholder = 'file:./'; if ( isset( $background_image_url ) && is_string( $background_image_url ) && // Skip if the src doesn't start with the placeholder, as there's nothing to replace. str_starts_with( $background_image_url, $placeholder ) ) { $file_type = wp_check_filetype( $background_image_url ); $src_url = str_replace( $placeholder, '', $background_image_url ); $resolved_theme_uri = array( 'name' => $background_image_url, 'href' => sanitize_url( get_theme_file_uri( $src_url ) ), 'target' => 'styles.background.backgroundImage.url', ); if ( isset( $file_type['type'] ) ) { $resolved_theme_uri['type'] = $file_type['type']; } $resolved_theme_uris[] = $resolved_theme_uri; } return $resolved_theme_uris; } /** * Resolves relative paths in theme.json styles to theme absolute paths * and merges them with incoming theme JSON. * * @since 6.6.0 * * @param WP_Theme_JSON $theme_json A theme json instance. * @return WP_Theme_JSON Theme merged with resolved paths, if any found. */ public static function resolve_theme_file_uris( $theme_json ) { $resolved_urls = static::get_resolved_theme_uris( $theme_json ); if ( empty( $resolved_urls ) ) { return $theme_json; } $resolved_theme_json_data = array( 'version' => WP_Theme_JSON::LATEST_SCHEMA, ); foreach ( $resolved_urls as $resolved_url ) { $path = explode( '.', $resolved_url['target'] ); _wp_array_set( $resolved_theme_json_data, $path, $resolved_url['href'] ); } $theme_json->merge( new WP_Theme_JSON( $resolved_theme_json_data ) ); return $theme_json; } /** * Adds variations sourced from block style variations files to the supplied theme.json data. * * @since 6.6.0 * * @param array $data Array following the theme.json specification. * @param array $variations Shared block style variations. * @return array Theme json data including shared block style variation definitions. */ private static function inject_variations_from_block_style_variation_files( $data, $variations ) { if ( empty( $variations ) ) { return $data; } foreach ( $variations as $variation ) { if ( empty( $variation['styles'] ) || empty( $variation['blockTypes'] ) ) { continue; } $variation_name = $variation['slug'] ?? _wp_to_kebab_case( $variation['title'] ); foreach ( $variation['blockTypes'] as $block_type ) { // First, override partial styles with any top-level styles. $top_level_data = $data['styles']['variations'][ $variation_name ] ?? array(); if ( ! empty( $top_level_data ) ) { $variation['styles'] = array_replace_recursive( $variation['styles'], $top_level_data ); } // Then, override styles so far with any block-level styles. $block_level_data = $data['styles']['blocks'][ $block_type ]['variations'][ $variation_name ] ?? array(); if ( ! empty( $block_level_data ) ) { $variation['styles'] = array_replace_recursive( $variation['styles'], $block_level_data ); } $path = array( 'styles', 'blocks', $block_type, 'variations', $variation_name ); _wp_array_set( $data, $path, $variation['styles'] ); } } return $data; } /** * Adds variations sourced from the block styles registry to the supplied theme.json data. * * @since 6.6.0 * * @param array $data Array following the theme.json specification. * @return array Theme json data including shared block style variation definitions. */ private static function inject_variations_from_block_styles_registry( $data ) { $registry = WP_Block_Styles_Registry::get_instance(); $styles = $registry->get_all_registered(); foreach ( $styles as $block_type => $variations ) { foreach ( $variations as $variation_name => $variation ) { if ( empty( $variation['style_data'] ) ) { continue; } // First, override registry styles with any top-level styles. $top_level_data = $data['styles']['variations'][ $variation_name ] ?? array(); if ( ! empty( $top_level_data ) ) { $variation['style_data'] = array_replace_recursive( $variation['style_data'], $top_level_data ); } // Then, override styles so far with any block-level styles. $block_level_data = $data['styles']['blocks'][ $block_type ]['variations'][ $variation_name ] ?? array(); if ( ! empty( $block_level_data ) ) { $variation['style_data'] = array_replace_recursive( $variation['style_data'], $block_level_data ); } $path = array( 'styles', 'blocks', $block_type, 'variations', $variation_name ); _wp_array_set( $data, $path, $variation['style_data'] ); } } return $data; } }