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<?php /** * Script Modules API: WP_Script_Modules class. * * Native support for ES Modules and Import Maps. * * @package WordPress * @subpackage Script Modules */ /** * Core class used to register script modules. * * @since 6.5.0 * * @phpstan-type ScriptModule array{ * src: string, * version: string|false|null, * dependencies: array<int, array{ id: string, import: 'static'|'dynamic' }>, * in_footer: bool, * fetchpriority: 'auto'|'low'|'high', * textdomain?: string, * translations_path?: string, * } */ class WP_Script_Modules { /** * Holds the registered script modules, keyed by script module identifier. * * @since 6.5.0 * @var array<string, array<string, mixed>> * @phpstan-var array<string, ScriptModule> */ private $registered = array(); /** * An array of IDs for queued script modules. * * @since 6.9.0 * @var string[] */ private $queue = array(); /** * Holds the script module identifiers that have been printed. * * @since 6.9.0 * @var string[] */ private $done = array(); /** * Tracks whether the @wordpress/a11y script module is available. * * Some additional HTML is required on the page for the module to work. Track * whether it's available to print at the appropriate time. * * @since 6.7.0 * @var bool */ private $a11y_available = false; /** * Holds a mapping of dependents (as IDs) for a given script ID. * Used to optimize recursive dependency tree checks. * * @since 6.9.0 * @var array<string, string[]> */ private $dependents_map = array(); /** * Holds the valid values for fetchpriority. * * @since 6.9.0 * @var string[] */ private $priorities = array( 'low', 'auto', 'high', ); /** * List of IDs for script modules encountered which have missing dependencies. * * An ID is added to this list when it is discovered to have missing dependencies. At this time, a warning is * emitted with {@see _doing_it_wrong()}. The ID is then added to this list, so that duplicate warnings don't occur. * * @since 6.9.1 * @var string[] */ private $modules_with_missing_dependencies = array(); /** * Registers the script module if no script module with that script module * identifier has already been registered. * * @since 6.5.0 * @since 6.9.0 Added the $args parameter. * * @param string $id The identifier of the script module. Should be unique. It will be used in the * final import map. * @param string $src Optional. Full URL of the script module, or path of the script module relative * to the WordPress root directory. If it is provided and the script module has * not been registered yet, it will be registered. * @param array<string|array<string, string>> $deps { * Optional. List of dependencies. * * @type string|array<string, string> ...$0 { * An array of script module identifiers of the dependencies of this script * module. The dependencies can be strings or arrays. If they are arrays, * they need an `id` key with the script module identifier, and can contain * an `import` key with either `static` or `dynamic`. By default, * dependencies that don't contain an `import` key are considered static. * * @type string $id The script module identifier. * @type string $import Optional. Import type. May be either `static` or * `dynamic`. Defaults to `static`. * } * } * @param string|false|null $version Optional. String specifying the script module version number. Defaults to false. * It is added to the URL as a query string for cache busting purposes. If $version * is set to false, the version number is the currently installed WordPress version. * If $version is set to null, no version is added. * @param array<string, string|bool> $args { * Optional. An array of additional args. Default empty array. * * @type bool $in_footer Whether to print the script module in the footer. Only relevant to block themes. Default 'false'. Optional. * @type 'auto'|'low'|'high' $fetchpriority Fetch priority. Default 'auto'. Optional. * } */ public function register( string $id, string $src, array $deps = array(), $version = false, array $args = array() ) { if ( '' === $id ) { _doing_it_wrong( __METHOD__, __( 'Non-empty string required for id.' ), '6.9.0' ); return; } if ( ! isset( $this->registered[ $id ] ) ) { $dependencies = array(); foreach ( $deps as $dependency ) { if ( is_array( $dependency ) ) { if ( ! isset( $dependency['id'] ) || ! is_string( $dependency['id'] ) ) { _doing_it_wrong( __METHOD__, __( 'Missing required id key in entry among dependencies array.' ), '6.5.0' ); continue; } $dependencies[] = array( 'id' => $dependency['id'], 'import' => isset( $dependency['import'] ) && 'dynamic' === $dependency['import'] ? 'dynamic' : 'static', ); } elseif ( is_string( $dependency ) ) { $dependencies[] = array( 'id' => $dependency, 'import' => 'static', ); } else { _doing_it_wrong( __METHOD__, __( 'Entries in dependencies array must be either strings or arrays with an id key.' ), '6.5.0' ); } } $in_footer = isset( $args['in_footer'] ) && (bool) $args['in_footer']; $fetchpriority = 'auto'; if ( isset( $args['fetchpriority'] ) ) { if ( $this->is_valid_fetchpriority( $args['fetchpriority'] ) ) { $fetchpriority = $args['fetchpriority']; } else { _doing_it_wrong( __METHOD__, sprintf( /* translators: 1: $fetchpriority, 2: $id */ __( 'Invalid fetchpriority `%1$s` defined for `%2$s` during script registration.' ), is_string( $args['fetchpriority'] ) ? $args['fetchpriority'] : gettype( $args['fetchpriority'] ), $id ), '6.9.0' ); } } $this->registered[ $id ] = array( 'src' => $src, 'version' => $version, 'dependencies' => $dependencies, 'in_footer' => $in_footer, 'fetchpriority' => $fetchpriority, ); } } /** * Gets IDs for queued script modules. * * @since 6.9.0 * * @return string[] Script module IDs. */ public function get_queue(): array { return $this->queue; } /** * Checks if the provided fetchpriority is valid. * * @since 6.9.0 * * @param string|mixed $priority Fetch priority. * @return bool Whether valid fetchpriority. */ private function is_valid_fetchpriority( $priority ): bool { return in_array( $priority, $this->priorities, true ); } /** * Sets the fetch priority for a script module. * * @since 6.9.0 * * @param string $id Script module identifier. * @param 'auto'|'low'|'high' $priority Fetch priority for the script module. * @return bool Whether setting the fetchpriority was successful. */ public function set_fetchpriority( string $id, string $priority ): bool { if ( ! isset( $this->registered[ $id ] ) ) { return false; } if ( '' === $priority ) { $priority = 'auto'; } if ( ! $this->is_valid_fetchpriority( $priority ) ) { _doing_it_wrong( __METHOD__, /* translators: %s: Invalid fetchpriority. */ sprintf( __( 'Invalid fetchpriority: %s' ), $priority ), '6.9.0' ); return false; } $this->registered[ $id ]['fetchpriority'] = $priority; return true; } /** * Sets whether a script module should be printed in the footer. * * This is only relevant in block themes. * * @since 6.9.0 * * @param string $id Script module identifier. * @param bool $in_footer Whether to print in the footer. * @return bool Whether setting the printing location was successful. */ public function set_in_footer( string $id, bool $in_footer ): bool { if ( ! isset( $this->registered[ $id ] ) ) { return false; } $this->registered[ $id ]['in_footer'] = $in_footer; return true; } /** * Marks the script module to be enqueued in the page. * * If a src is provided and the script module has not been registered yet, it * will be registered. * * @since 6.5.0 * @since 6.9.0 Added the $args parameter. * * @param string $id The identifier of the script module. Should be unique. It will be used in the * final import map. * @param string $src Optional. Full URL of the script module, or path of the script module relative * to the WordPress root directory. If it is provided and the script module has * not been registered yet, it will be registered. * @param array<string|array<string, string>> $deps { * Optional. List of dependencies. * * @type string|array<string, string> ...$0 { * An array of script module identifiers of the dependencies of this script * module. The dependencies can be strings or arrays. If they are arrays, * they need an `id` key with the script module identifier, and can contain * an `import` key with either `static` or `dynamic`. By default, * dependencies that don't contain an `import` key are considered static. * * @type string $id The script module identifier. * @type string $import Optional. Import type. May be either `static` or * `dynamic`. Defaults to `static`. * } * } * @param string|false|null $version Optional. String specifying the script module version number. Defaults to false. * It is added to the URL as a query string for cache busting purposes. If $version * is set to false, the version number is the currently installed WordPress version. * If $version is set to null, no version is added. * @param array<string, string|bool> $args { * Optional. An array of additional args. Default empty array. * * @type bool $in_footer Whether to print the script module in the footer. Only relevant to block themes. Default 'false'. Optional. * @type 'auto'|'low'|'high' $fetchpriority Fetch priority. Default 'auto'. Optional. * } */ public function enqueue( string $id, string $src = '', array $deps = array(), $version = false, array $args = array() ) { if ( '' === $id ) { _doing_it_wrong( __METHOD__, __( 'Non-empty string required for id.' ), '6.9.0' ); return; } if ( ! in_array( $id, $this->queue, true ) ) { $this->queue[] = $id; } if ( ! isset( $this->registered[ $id ] ) && $src ) { $this->register( $id, $src, $deps, $version, $args ); } } /** * Unmarks the script module so it will no longer be enqueued in the page. * * @since 6.5.0 * * @param string $id The identifier of the script module. */ public function dequeue( string $id ) { $this->queue = array_values( array_diff( $this->queue, array( $id ) ) ); } /** * Removes a registered script module. * * @since 6.5.0 * * @param string $id The identifier of the script module. */ public function deregister( string $id ) { $this->dequeue( $id ); unset( $this->registered[ $id ] ); } /** * Overrides the text domain and path used to load translations for a script module. * * This is only needed for modules whose text domain differs from 'default' * or whose translation files live outside the standard locations, for * example plugin modules that register their own text domain. Translations * for modules that use the default domain are loaded automatically by * {@see WP_Script_Modules::print_script_module_translations()}. * * @since 7.0.0 * * @param string $id The identifier of the script module. * @param string $domain Optional. Text domain. Default 'default'. * @param string $path Optional. The full file path to the directory containing translation files. * @return bool True if the text domain was registered, false if the module is not registered. */ public function set_translations( string $id, string $domain = 'default', string $path = '' ): bool { if ( ! isset( $this->registered[ $id ] ) ) { return false; } $this->registered[ $id ]['textdomain'] = $domain; $this->registered[ $id ]['translations_path'] = $path; return true; } /** * Prints translations for all enqueued script modules. * * Outputs inline `<script>` tags that call `wp.i18n.setLocaleData()` with * the translated strings for each script module. This must run before * the script modules execute. * * Auto-detects the text domain and translation path for each module from * its source URL. Modules whose text domain or path differs from the * defaults can opt into a specific domain/path via * {@see WP_Script_Modules::set_translations()}. * * @since 7.0.0 */ public function print_script_module_translations(): void { // Collect all module IDs that will be on the page (enqueued + their dependencies). $module_ids = $this->get_sorted_dependencies( $this->queue ); $set_locale_data_js_function = <<<'JS' ( domain, translations ) => { const localeData = translations.locale_data[ domain ] || translations.locale_data.messages; localeData[""].domain = domain; wp.i18n.setLocaleData( localeData, domain ); } JS; foreach ( $module_ids as $id ) { $domain = $this->registered[ $id ]['textdomain'] ?? 'default'; $path = $this->registered[ $id ]['translations_path'] ?? ''; $json_translations = load_script_module_textdomain( $id, $domain, $path ); if ( ! $json_translations ) { continue; } $output = sprintf( '( %s )( %s, %s );', $set_locale_data_js_function, wp_json_encode( $domain, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ), $json_translations ); $script_id = "wp-script-module-translation-data-{$id}"; $output .= "\n//# sourceURL=" . rawurlencode( $script_id ); // Ensure wp-i18n is printed; the inline script below relies on wp.i18n.setLocaleData(). if ( ! wp_script_is( 'wp-i18n', 'done' ) ) { wp_scripts()->do_items( array( 'wp-i18n' ) ); } wp_print_inline_script_tag( $output, array( 'id' => $script_id ) ); } } /** * Adds the hooks to print the import map, enqueued script modules and script * module preloads. * * In classic themes, the script modules used by the blocks are not yet known * when the `wp_head` actions is fired, so it needs to print everything in the * footer. * * @since 6.5.0 */ public function add_hooks() { $is_block_theme = wp_is_block_theme(); $position = $is_block_theme ? 'wp_head' : 'wp_footer'; add_action( $position, array( $this, 'print_import_map' ) ); if ( $is_block_theme ) { /* * Modules can only be printed in the head for block themes because only with * block themes will import map be fully populated by modules discovered by * rendering the block template. In classic themes, modules are enqueued during * template rendering, thus the import map must be printed in the footer, * followed by all enqueued modules. */ add_action( 'wp_head', array( $this, 'print_head_enqueued_script_modules' ) ); } add_action( 'wp_footer', array( $this, 'print_enqueued_script_modules' ) ); add_action( $position, array( $this, 'print_script_module_preloads' ) ); add_action( 'admin_print_footer_scripts', array( $this, 'print_import_map' ), 9 ); add_action( 'admin_print_footer_scripts', array( $this, 'print_enqueued_script_modules' ) ); add_action( 'admin_print_footer_scripts', array( $this, 'print_script_module_preloads' ) ); /* * Print translations after classic scripts like wp-i18n are loaded (at * priority 10 via _wp_footer_scripts), but before the script modules * execute. Script modules with type="module" are deferred by default, * so inline translation scripts at priority 11 will execute before them. */ add_action( 'wp_footer', array( $this, 'print_script_module_translations' ), 21 ); add_action( 'admin_print_footer_scripts', array( $this, 'print_script_module_translations' ), 11 ); add_action( 'wp_footer', array( $this, 'print_script_module_data' ) ); add_action( 'admin_print_footer_scripts', array( $this, 'print_script_module_data' ) ); add_action( 'wp_footer', array( $this, 'print_a11y_script_module_html' ), 20 ); add_action( 'admin_print_footer_scripts', array( $this, 'print_a11y_script_module_html' ), 20 ); } /** * Gets the highest fetch priority for the provided script IDs. * * @since 6.9.0 * * @param string[] $ids Script module IDs. * @return 'auto'|'low'|'high' Highest fetch priority for the provided script module IDs. */ private function get_highest_fetchpriority( array $ids ): string { static $high_priority_index = null; if ( null === $high_priority_index ) { $high_priority_index = count( $this->priorities ) - 1; } $highest_priority_index = 0; foreach ( $ids as $id ) { if ( isset( $this->registered[ $id ] ) ) { $highest_priority_index = (int) max( $highest_priority_index, (int) array_search( $this->registered[ $id ]['fetchpriority'], $this->priorities, true ) ); if ( $high_priority_index === $highest_priority_index ) { break; } } } return $this->priorities[ $highest_priority_index ]; } /** * Prints the enqueued script modules in head. * * This is only used in block themes. * * @since 6.9.0 */ public function print_head_enqueued_script_modules() { foreach ( $this->get_sorted_dependencies( $this->queue ) as $id ) { if ( isset( $this->registered[ $id ] ) && ! $this->registered[ $id ]['in_footer'] ) { // If any dependency is set to be printed in footer, skip printing this module in head. $dependencies = array_keys( $this->get_dependencies( array( $id ) ) ); foreach ( $dependencies as $dependency_id ) { if ( in_array( $dependency_id, $this->queue, true ) && isset( $this->registered[ $dependency_id ] ) && $this->registered[ $dependency_id ]['in_footer'] ) { continue 2; } } $this->print_script_module( $id ); } } } /** * Prints the enqueued script modules in footer. * * @since 6.5.0 */ public function print_enqueued_script_modules() { foreach ( $this->get_sorted_dependencies( $this->queue ) as $id ) { $this->print_script_module( $id ); } } /** * Prints the enqueued script module using script tags with type="module" * attributes. * * @since 6.9.0 * * @param string $id The script module identifier. */ private function print_script_module( string $id ) { if ( in_array( $id, $this->done, true ) || ! in_array( $id, $this->queue, true ) ) { return; } $this->done[] = $id; $src = $this->get_src( $id ); if ( '' === $src ) { return; } $attributes = array( 'type' => 'module', 'src' => $src, 'id' => $id . '-js-module', ); $script_module = $this->registered[ $id ]; $queued_dependents = array_intersect( $this->queue, $this->get_recursive_dependents( $id ) ); $fetchpriority = $this->get_highest_fetchpriority( array_merge( array( $id ), $queued_dependents ) ); if ( 'auto' !== $fetchpriority ) { $attributes['fetchpriority'] = $fetchpriority; } if ( $fetchpriority !== $script_module['fetchpriority'] ) { $attributes['data-wp-fetchpriority'] = $script_module['fetchpriority']; } wp_print_script_tag( $attributes ); } /** * Prints the static dependencies of the enqueued script modules using * link tags with rel="modulepreload" attributes. * * If a script module is marked for enqueue, it will not be preloaded. * * @since 6.5.0 */ public function print_script_module_preloads() { $dependency_ids = $this->get_sorted_dependencies( $this->queue, array( 'static' ) ); foreach ( $dependency_ids as $id ) { // Don't preload if it's marked for enqueue. if ( in_array( $id, $this->queue, true ) ) { continue; } $src = $this->get_src( $id ); if ( '' === $src ) { continue; } $enqueued_dependents = array_intersect( $this->get_recursive_dependents( $id ), $this->queue ); $highest_fetchpriority = $this->get_highest_fetchpriority( $enqueued_dependents ); printf( '<link rel="modulepreload" href="%s" id="%s"', esc_url( $src ), esc_attr( $id . '-js-modulepreload' ) ); if ( 'auto' !== $highest_fetchpriority ) { printf( ' fetchpriority="%s"', esc_attr( $highest_fetchpriority ) ); } if ( $highest_fetchpriority !== $this->registered[ $id ]['fetchpriority'] && 'auto' !== $this->registered[ $id ]['fetchpriority'] ) { printf( ' data-wp-fetchpriority="%s"', esc_attr( $this->registered[ $id ]['fetchpriority'] ) ); } echo ">\n"; } } /** * Prints the import map using a script tag with a type="importmap" attribute. * * @since 6.5.0 */ public function print_import_map() { $import_map = $this->get_import_map(); if ( ! empty( $import_map['imports'] ) ) { wp_print_inline_script_tag( (string) wp_json_encode( $import_map, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ), array( 'type' => 'importmap', 'id' => 'wp-importmap', ) ); } } /** * Returns the import map array. * * @since 6.5.0 * @since 7.0.0 Script module dependencies ('module_dependencies') of classic scripts are now included. * * @global WP_Scripts $wp_scripts * * @return array<string, array<string, string>> Array with an `imports` key mapping to an array of script module * identifiers and their respective URLs, including the version query. */ private function get_import_map(): array { global $wp_scripts; $imports = array(); // Identify script modules that are dependencies of classic scripts. $classic_script_module_dependencies = array(); if ( $wp_scripts instanceof WP_Scripts ) { $handles = array_merge( $wp_scripts->queue, $wp_scripts->to_do, $wp_scripts->done ); $processed = array(); while ( ! empty( $handles ) ) { $handle = array_pop( $handles ); if ( isset( $processed[ $handle ] ) || ! isset( $wp_scripts->registered[ $handle ] ) ) { continue; } $processed[ $handle ] = true; $module_dependencies = $wp_scripts->get_data( $handle, 'module_dependencies' ); if ( is_array( $module_dependencies ) ) { $missing_module_dependencies = array(); foreach ( $module_dependencies as $module ) { if ( is_string( $module ) ) { $id = $module; } elseif ( is_array( $module ) && isset( $module['id'] ) && is_string( $module['id'] ) ) { $id = $module['id']; } else { // Invalid module dependency was supplied by direct manipulation of the extra data. // Normally, this error scenario would be caught when WP_Scripts::add_data() is called. continue; } if ( ! isset( $this->registered[ $id ] ) ) { $missing_module_dependencies[] = $id; } else { $classic_script_module_dependencies[] = $id; } } if ( count( $missing_module_dependencies ) > 0 ) { _doing_it_wrong( 'WP_Scripts::add_data', sprintf( /* translators: 1: Script handle, 2: 'module_dependencies', 3: List of missing dependency IDs. */ __( 'The script with the handle "%1$s" was enqueued with script module dependencies ("%2$s") that are not registered: %3$s.' ), $handle, 'module_dependencies', implode( wp_get_list_item_separator(), $missing_module_dependencies ) ), '7.0.0' ); } } foreach ( $wp_scripts->registered[ $handle ]->deps as $dep ) { if ( ! isset( $processed[ $dep ] ) ) { $handles[] = $dep; } } } } // Note: the script modules in $this->queue are not included in the importmap because they get printed as scripts. $ids = array_unique( array_merge( $classic_script_module_dependencies, array_keys( $this->get_dependencies( array_merge( $this->queue, $classic_script_module_dependencies ) ) ) ) ); foreach ( $ids as $id ) { $src = $this->get_src( $id ); if ( '' !== $src ) { $imports[ $id ] = $src; } } return array( 'imports' => $imports ); } /** * Retrieves the list of script modules marked for enqueue. * * Even though this is a private method and is unused in core, there are ecosystem plugins accessing it via the * Reflection API. The ecosystem should rather use {@see self::get_queue()}. * * @since 6.5.0 * * @return array<string, array<string, mixed>> Script modules marked for enqueue, keyed by script module identifier. * @phpstan-return array<string, ScriptModule> */ private function get_marked_for_enqueue(): array { return wp_array_slice_assoc( $this->registered, $this->queue ); } /** * Retrieves all the dependencies for the given script module identifiers, filtered by import types. * * It will consolidate an array containing a set of unique dependencies based * on the requested import types: 'static', 'dynamic', or both. This method is * recursive and also retrieves dependencies of the dependencies. * * @since 6.5.0 * * @param string[] $ids The identifiers of the script modules for which to gather dependencies. * @param string[] $import_types Optional. Import types of dependencies to retrieve: 'static', 'dynamic', or both. * Default is both. * @return array<string, array<string, mixed>> List of dependencies, keyed by script module identifier. * @phpstan-return array<string, ScriptModule> */ private function get_dependencies( array $ids, array $import_types = array( 'static', 'dynamic' ) ): array { $all_dependencies = array(); $id_queue = $ids; while ( ! empty( $id_queue ) ) { $id = array_shift( $id_queue ); if ( ! isset( $this->registered[ $id ] ) ) { continue; } foreach ( $this->registered[ $id ]['dependencies'] as $dependency ) { if ( ! isset( $all_dependencies[ $dependency['id'] ] ) && in_array( $dependency['import'], $import_types, true ) && isset( $this->registered[ $dependency['id'] ] ) ) { $all_dependencies[ $dependency['id'] ] = $this->registered[ $dependency['id'] ]; // Add this dependency to the list to get dependencies for. $id_queue[] = $dependency['id']; } } } return $all_dependencies; } /** * Gets all dependents of a script module. * * This is not recursive. * * @since 6.9.0 * * @see WP_Scripts::get_dependents() * * @param string $id The script ID. * @return string[] Script module IDs. */ private function get_dependents( string $id ): array { // Check if dependents map for the handle in question is present. If so, use it. if ( isset( $this->dependents_map[ $id ] ) ) { return $this->dependents_map[ $id ]; } $dependents = array(); // Iterate over all registered scripts, finding dependents of the script passed to this method. foreach ( $this->registered as $registered_id => $args ) { if ( in_array( $id, wp_list_pluck( $args['dependencies'], 'id' ), true ) ) { $dependents[] = $registered_id; } } // Add the module's dependents to the map to ease future lookups. $this->dependents_map[ $id ] = $dependents; return $dependents; } /** * Gets all recursive dependents of a script module. * * @since 6.9.0 * * @see WP_Scripts::get_dependents() * * @param string $id The script ID. * @return string[] Script module IDs. */ private function get_recursive_dependents( string $id ): array { $dependents = array(); $id_queue = array( $id ); $processed = array(); while ( ! empty( $id_queue ) ) { $current_id = array_shift( $id_queue ); // Skip unregistered or already-processed script modules. if ( ! isset( $this->registered[ $current_id ] ) || isset( $processed[ $current_id ] ) ) { continue; } // Mark as processed to guard against infinite loops from circular dependencies. $processed[ $current_id ] = true; // Find the direct dependents of the current script. foreach ( $this->get_dependents( $current_id ) as $dependent_id ) { // Only add the dependent if we haven't found it before. if ( ! isset( $dependents[ $dependent_id ] ) ) { $dependents[ $dependent_id ] = true; // Add dependency to the queue. $id_queue[] = $dependent_id; } } } return array_keys( $dependents ); } /** * Sorts the given script module identifiers based on their dependencies. * * It will return a list of script module identifiers sorted in the order * they should be printed, so that dependencies are printed before the script * modules that depend on them. * * @since 6.9.0 * * @param string[] $ids The identifiers of the script modules to sort. * @param string[] $import_types Optional. Import types of dependencies to retrieve: 'static', 'dynamic', or both. * Default is both. * @return string[] Sorted list of script module identifiers. */ private function get_sorted_dependencies( array $ids, array $import_types = array( 'static', 'dynamic' ) ): array { $sorted = array(); foreach ( $ids as $id ) { $this->sort_item_dependencies( $id, $import_types, $sorted ); } return array_unique( $sorted ); } /** * Recursively sorts the dependencies for a single script module identifier. * * @since 6.9.0 * * @param string $id The identifier of the script module to sort. * @param string[] $import_types Optional. Import types of dependencies to retrieve: 'static', 'dynamic', or both. * @param string[] &$sorted The array of sorted identifiers, passed by reference. * @return bool True on success, false on failure (e.g., missing dependency). */ private function sort_item_dependencies( string $id, array $import_types, array &$sorted ): bool { // If already processed, don't do it again. if ( in_array( $id, $sorted, true ) ) { return true; } // If the item doesn't exist, fail. if ( ! isset( $this->registered[ $id ] ) ) { return false; } $dependency_ids = array(); foreach ( $this->registered[ $id ]['dependencies'] as $dependency ) { if ( in_array( $dependency['import'], $import_types, true ) ) { $dependency_ids[] = $dependency['id']; } } // If the item requires dependencies that do not exist, fail. $missing_dependencies = array_diff( $dependency_ids, array_keys( $this->registered ) ); if ( count( $missing_dependencies ) > 0 ) { if ( ! in_array( $id, $this->modules_with_missing_dependencies, true ) ) { _doing_it_wrong( get_class( $this ) . '::register', sprintf( /* translators: 1: Script module ID, 2: List of missing dependency IDs. */ __( 'The script module with the ID "%1$s" was enqueued with dependencies that are not registered: %2$s.' ), $id, implode( wp_get_list_item_separator(), $missing_dependencies ) ), '6.9.1' ); $this->modules_with_missing_dependencies[] = $id; } return false; } // Recursively process dependencies. foreach ( $dependency_ids as $dependency_id ) { if ( ! $this->sort_item_dependencies( $dependency_id, $import_types, $sorted ) ) { // A dependency failed to resolve, so this branch fails. return false; } } // All dependencies are sorted, so we can now add the current item. $sorted[] = $id; return true; } /** * Gets the data for a registered script module. * * @since 7.0.0 * * @param string $id The script module identifier. * @return array|null The script module data, or null if not registered. * @phpstan-return ScriptModule|null */ public function get_registered( string $id ): ?array { return $this->registered[ $id ] ?? null; } /** * Gets the versioned URL for a script module src. * * If $version is set to false, the version number is the currently installed * WordPress version. If $version is set to null, no version is added. * Otherwise, the string passed in $version is used. * * @since 6.5.0 * * @param string $id The script module identifier. * @return string The script module src with a version if relevant. */ private function get_src( string $id ): string { if ( ! isset( $this->registered[ $id ] ) ) { return ''; } $script_module = $this->registered[ $id ]; $src = $script_module['src']; if ( '' !== $src ) { if ( false === $script_module['version'] ) { $src = add_query_arg( 'ver', get_bloginfo( 'version' ), $src ); } elseif ( null !== $script_module['version'] ) { $src = add_query_arg( 'ver', $script_module['version'], $src ); } } /** * Filters the script module source. * * @since 6.5.0 * * @param string $src Module source URL. * @param string $id Module identifier. */ $src = apply_filters( 'script_module_loader_src', $src, $id ); if ( ! is_string( $src ) ) { $src = ''; } return $src; } /** * Print data associated with Script Modules. * * The data will be embedded in the page HTML and can be read by Script Modules on page load. * * @since 6.7.0 * * Data can be associated with a Script Module via the * {@see "script_module_data_{$module_id}"} filter. * * The data for a Script Module will be serialized as JSON in a script tag with an ID of the * form `wp-script-module-data-{$module_id}`. */ public function print_script_module_data(): void { $modules = array(); foreach ( array_unique( $this->queue ) as $id ) { if ( '@wordpress/a11y' === $id ) { $this->a11y_available = true; } $modules[ $id ] = true; } foreach ( array_keys( $this->get_import_map()['imports'] ) as $id ) { if ( '@wordpress/a11y' === $id ) { $this->a11y_available = true; } $modules[ $id ] = true; } foreach ( array_keys( $modules ) as $module_id ) { /** * Filters data associated with a given Script Module. * * Script Modules may require data that is required for initialization or is essential * to have immediately available on page load. These are suitable use cases for * this data. * * The dynamic portion of the hook name, `$module_id`, refers to the Script Module ID * that the data is associated with. * * This is best suited to pass essential data that must be available to the module for * initialization or immediately on page load. It does not replace the REST API or * fetching data from the client. * * Example: * * add_filter( * 'script_module_data_MyScriptModuleID', * function ( array $data ): array { * $data['dataForClient'] = 'ok'; * return $data; * } * ); * * If the filter returns no data (an empty array), nothing will be embedded in the page. * * The data for a given Script Module, if provided, will be JSON serialized in a script * tag with an ID of the form `wp-script-module-data-{$module_id}`. * * The data can be read on the client with a pattern like this: * * Example: * * const dataContainer = document.getElementById( 'wp-script-module-data-MyScriptModuleID' ); * let data = {}; * if ( dataContainer ) { * try { * data = JSON.parse( dataContainer.textContent ); * } catch {} * } * // data.dataForClient === 'ok'; * initMyScriptModuleWithData( data ); * * @since 6.7.0 * * @param array $data The data associated with the Script Module. */ $data = apply_filters( "script_module_data_{$module_id}", array() ); if ( is_array( $data ) && array() !== $data ) { /* * This data will be printed as JSON inside a script tag like this: * <script type="application/json"></script> * * A script tag must be closed by a sequence beginning with `</`. It's impossible to * close a script tag without using `<`. We ensure that `<` is escaped and `/` can * remain unescaped, so `</script>` will be printed as `\u003C/script\u00E3`. * * - JSON_HEX_TAG: All < and > are converted to \u003C and \u003E. * - JSON_UNESCAPED_SLASHES: Don't escape /. * * If the page will use UTF-8 encoding, it's safe to print unescaped unicode: * * - JSON_UNESCAPED_UNICODE: Encode multibyte Unicode characters literally (instead of as `\uXXXX`). * - JSON_UNESCAPED_LINE_TERMINATORS: The line terminators are kept unescaped when * JSON_UNESCAPED_UNICODE is supplied. It uses the same behaviour as it was * before PHP 7.1 without this constant. Available as of PHP 7.1.0. * * The JSON specification requires encoding in UTF-8, so if the generated HTML page * is not encoded in UTF-8 then it's not safe to include those literals. They must * be escaped to avoid encoding issues. * * @see https://www.rfc-editor.org/rfc/rfc8259.html for details on encoding requirements. * @see https://www.php.net/manual/en/json.constants.php for details on these constants. * @see https://html.spec.whatwg.org/#script-data-state for details on script tag parsing. */ $json_encode_flags = JSON_HEX_TAG | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_LINE_TERMINATORS; if ( ! is_utf8_charset() ) { $json_encode_flags = JSON_HEX_TAG | JSON_UNESCAPED_SLASHES; } wp_print_inline_script_tag( (string) wp_json_encode( $data, $json_encode_flags ), array( 'type' => 'application/json', 'id' => "wp-script-module-data-{$module_id}", ) ); } } } /** * @access private This is only intended to be called by the registered actions. * * @since 6.7.0 */ public function print_a11y_script_module_html() { if ( ! $this->a11y_available ) { return; } echo '<div style="position:absolute;margin:-1px;padding:0;height:1px;width:1px;overflow:hidden;clip-path:inset(50%);border:0;word-wrap:normal !important;">' . '<p id="a11y-speak-intro-text" class="a11y-speak-intro-text" hidden>' . esc_html__( 'Notifications' ) . '</p>' . '<div id="a11y-speak-assertive" class="a11y-speak-region" aria-live="assertive" aria-relevant="additions text" aria-atomic="true"></div>' . '<div id="a11y-speak-polite" class="a11y-speak-region" aria-live="polite" aria-relevant="additions text" aria-atomic="true"></div>' . '</div>'; } }
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