t_inline_script_tag() or get_inline_script_data() instead. * * @param string $handle Name of the script to print inline scripts for. * Must be lowercase. * @param string $position Optional. Whether to add the inline script * before the handle or after. Default 'after'. * @param bool $display Optional. Whether to print the script tag * instead of just returning the script data. Default true. * @return string|false Script data on success, false otherwise. */ public function print_inline_script( $handle, $position = 'after', $display = true ) { _deprecated_function( __METHOD__, '6.3.0', 'WP_Scripts::get_inline_script_data() or WP_Scripts::get_inline_script_tag()' ); $output = $this->get_inline_script_data( $handle, $position ); if ( empty( $output ) ) { return false; } if ( $display ) { echo $this->get_inline_script_tag( $handle, $position ); } return $output; } /** * Gets data for inline scripts registered for a specific handle. * * @since 6.3.0 * * @param string $handle Name of the script to get data for. * Must be lowercase. * @param string $position Optional. Whether to add the inline script * before the handle or after. Default 'after'. * @return string Inline script, which may be empty string. */ public function get_inline_script_data( $handle, $position = 'after' ) { $data = $this->get_data( $handle, $position ); if ( empty( $data ) || ! is_array( $data ) ) { return ''; } return trim( implode( "\n", $data ), "\n" ); } /** * Gets tags for inline scripts registered for a specific handle. * * @since 6.3.0 * * @param string $handle Name of the script to get associated inline script tag for. * Must be lowercase. * @param string $position Optional. Whether to get tag for inline * scripts in the before or after position. Default 'after'. * @return string Inline script, which may be empty string. */ public function get_inline_script_tag( $handle, $position = 'after' ) { $js = $this->get_inline_script_data( $handle, $position ); if ( empty( $js ) ) { return ''; } $id = "{$handle}-js-{$position}"; return wp_get_inline_script_tag( $js, compact( 'id' ) ); } /** * Localizes a script, only if the script has already been added. * * @since 2.1.0 * * @param string $handle Name of the script to attach data to. * @param string $object_name Name of the variable that will contain the data. * @param array $l10n Array of data to localize. * @return bool True on success, false on failure. */ public function localize( $handle, $object_name, $l10n ) { if ( 'jquery' === $handle ) { $handle = 'jquery-core'; } if ( is_array( $l10n ) && isset( $l10n['l10n_print_after'] ) ) { // back compat, preserve the code in 'l10n_print_after' if present. $after = $l10n['l10n_print_after']; unset( $l10n['l10n_print_after'] ); } if ( ! is_array( $l10n ) ) { _doing_it_wrong( __METHOD__, sprintf( /* translators: 1: $l10n, 2: wp_add_inline_script() */ __( 'The %1$s parameter must be an array. To pass arbitrary data to scripts, use the %2$s function instead.' ), '$l10n', 'wp_add_inline_script()' ), '5.7.0' ); if ( false === $l10n ) { // This should really not be needed, but is necessary for backward compatibility. $l10n = array( $l10n ); } } if ( is_string( $l10n ) ) { $l10n = html_entity_decode( $l10n, ENT_QUOTES, 'UTF-8' ); } elseif ( is_array( $l10n ) ) { foreach ( $l10n as $key => $value ) { if ( ! is_scalar( $value ) ) { continue; } $l10n[ $key ] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8' ); } } $script = "var $object_name = " . wp_json_encode( $l10n ) . ';'; if ( ! empty( $after ) ) { $script .= "\n$after;"; } $data = $this->get_data( $handle, 'data' ); if ( ! empty( $data ) ) { $script = "$data\n$script"; } return $this->add_data( $handle, 'data', $script ); } /** * Sets handle group. * * @since 2.8.0 * * @see WP_Dependencies::set_group() * * @param string $handle Name of the item. Should be unique. * @param bool $recursion Internal flag that calling function was called recursively. * @param int|false $group Optional. Group level: level (int), no groups (false). * Default false. * @return bool Not already in the group or a lower group. */ public function set_group( $handle, $recursion, $group = false ) { if ( isset( $this->registered[ $handle ]->args ) && 1 === $this->registered[ $handle ]->args ) { $calculated_group = 1; } else { $calculated_group = (int) $this->get_data( $handle, 'group' ); } if ( false !== $group && $calculated_group > $group ) { $calculated_group = $group; } return parent::set_group( $handle, $recursion, $calculated_group ); } /** * Sets a translation textdomain. * * @since 5.0.0 * @since 5.1.0 The `$domain` parameter was made optional. * * @param string $handle Name of the script to register a translation domain to. * @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 not. */ public function set_translations( $handle, $domain = 'default', $path = '' ) { if ( ! isset( $this->registered[ $handle ] ) ) { return false; } /** @var \_WP_Dependency $obj */ $obj = $this->registered[ $handle ]; if ( ! in_array( 'wp-i18n', $obj->deps, true ) ) { $obj->deps[] = 'wp-i18n'; } return $obj->set_translations( $domain, $path ); } /** * Prints translations set for a specific handle. * * @since 5.0.0 * * @param string $handle Name of the script to add the inline script to. * Must be lowercase. * @param bool $display Optional. Whether to print the script * instead of just returning it. Default true. * @return string|false Script on success, false otherwise. */ public function print_translations( $handle, $display = true ) { if ( ! isset( $this->registered[ $handle ] ) || empty( $this->registered[ $handle ]->textdomain ) ) { return false; } $domain = $this->registered[ $handle ]->textdomain; $path = ''; if ( isset( $this->registered[ $handle ]->translations_path ) ) { $path = $this->registered[ $handle ]->translations_path; } $json_translations = load_script_textdomain( $handle, $domain, $path ); if ( ! $json_translations ) { return false; } $output = << "{$handle}-js-translations" ) ); } return $output; } /** * Determines script dependencies. * * @since 2.1.0 * * @see WP_Dependencies::all_deps() * * @param string|string[] $handles Item handle (string) or item handles (array of strings). * @param bool $recursion Optional. Internal flag that function is calling itself. * Default false. * @param int|false $group Optional. Group level: level (int), no groups (false). * Default false. * @return bool True on success, false on failure. */ public function all_deps( $handles, $recursion = false, $group = false ) { $result = parent::all_deps( $handles, $recursion, $group ); if ( ! $recursion ) { /** * Filters the list of script dependencies left to print. * * @since 2.3.0 * * @param string[] $to_do An array of script dependency handles. */ $this->to_do = apply_filters( 'print_scripts_array', $this->to_do ); } return $result; } /** * Processes items and dependencies for the head group. * * @since 2.8.0 * * @see WP_Dependencies::do_items() * * @return string[] Handles of items that have been processed. */ public function do_head_items() { $this->do_items( false, 0 ); return $this->done; } /** * Processes items and dependencies for the footer group. * * @since 2.8.0 * * @see WP_Dependencies::do_items() * * @return string[] Handles of items that have been processed. */ public function do_footer_items() { $this->do_items( false, 1 ); return $this->done; } /** * Whether a handle's source is in a default directory. * * @since 2.8.0 * * @param string $src The source of the enqueued script. * @return bool True if found, false if not. */ public function in_default_dir( $src ) { if ( ! $this->default_dirs ) { return true; } if ( str_starts_with( $src, '/' . WPINC . '/js/l10n' ) ) { return false; } foreach ( (array) $this->default_dirs as $test ) { if ( str_starts_with( $src, $test ) ) { return true; } } return false; } /** * This overrides the add_data method from WP_Dependencies, to support normalizing of $args. * * @since 6.3.0 * * @param string $handle Name of the item. Should be unique. * @param string $key The data key. * @param mixed $value The data value. * @return bool True on success, false on failure. */ public function add_data( $handle, $key, $value ) { if ( ! isset( $this->registered[ $handle ] ) ) { return false; } if ( 'strategy' === $key ) { if ( ! empty( $value ) && ! $this->is_delayed_strategy( $value ) ) { _doing_it_wrong( __METHOD__, sprintf( /* translators: 1: $strategy, 2: $handle */ __( 'Invalid strategy `%1$s` defined for `%2$s` during script registration.' ), $value, $handle ), '6.3.0' ); return false; } elseif ( ! $this->registered[ $handle ]->src && $this->is_delayed_strategy( $value ) ) { _doing_it_wrong( __METHOD__, sprintf( /* translators: 1: $strategy, 2: $handle */ __( 'Cannot supply a strategy `%1$s` for script `%2$s` because it is an alias (it lacks a `src` value).' ), $value, $handle ), '6.3.0' ); return false; } } return parent::add_data( $handle, $key, $value ); } /** * Gets all dependents of a script. * * @since 6.3.0 * * @param string $handle The script handle. * @return string[] Script handles. */ private function get_dependents( $handle ) { // Check if dependents map for the handle in question is present. If so, use it. if ( isset( $this->dependents_map[ $handle ] ) ) { return $this->dependents_map[ $handle ]; } $dependents = array(); // Iterate over all registered scripts, finding dependents of the script passed to this method. foreach ( $this->registered as $registered_handle => $args ) { if ( in_array( $handle, $args->deps, true ) ) { $dependents[] = $registered_handle; } } // Add the handles dependents to the map to ease future lookups. $this->dependents_map[ $handle ] = $dependents; return $dependents; } /** * Checks if the strategy passed is a valid delayed (non-blocking) strategy. * * @since 6.3.0 * * @param string $strategy The strategy to check. * @return bool True if $strategy is one of the delayed strategies, otherwise false. */ private function is_delayed_strategy( $strategy ) { return in_array( $strategy, $this->delayed_strategies, true ); } /** * Gets the best eligible loading strategy for a script. * * @since 6.3.0 * * @param string $handle The script handle. * @return string The best eligible loading strategy. */ private function get_eligible_loading_strategy( $handle ) { $intended_strategy = (string) $this->get_data( $handle, 'strategy' ); // Bail early if there is no intended strategy. if ( ! $intended_strategy ) { return ''; } /* * If the intended strategy is 'defer', limit the initial list of eligible * strategies, since 'async' can fallback to 'defer', but not vice-versa. */ $initial_strategy = ( 'defer' === $intended_strategy ) ? array( 'defer' ) : null; $eligible_strategies = $this->filter_eligible_strategies( $handle, $initial_strategy ); // Return early once we know the eligible strategy is blocking. if ( empty( $eligible_strategies ) ) { return ''; } return in_array( 'async', $eligible_strategies, true ) ? 'async' : 'defer'; } /** * Filter the list of eligible loading strategies for a script. * * @since 6.3.0 * * @param string $handle The script handle. * @param string[]|null $eligible_strategies Optional. The list of strategies to filter. Default null. * @param array $checked Optional. An array of already checked script handles, used to avoid recursive loops. * @return string[] A list of eligible loading strategies that could be used. */ private function filter_eligible_strategies( $handle, $eligible_strategies = null, $checked = array() ) { // If no strategies are being passed, all strategies are eligible. if ( null === $eligible_strategies ) { $eligible_strategies = $this->delayed_strategies; } // If this handle was already checked, return early. if ( isset( $checked[ $handle ] ) ) { return $eligible_strategies; } // Mark this handle as checked. $checked[ $handle ] = true; // If this handle isn't registered, don't filter anything and return. if ( ! isset( $this->registered[ $handle ] ) ) { return $eligible_strategies; } // If the handle is not enqueued, don't filter anything and return. if ( ! $this->query( $handle, 'enqueued' ) ) { return $eligible_strategies; } $is_alias = (bool) ! $this->registered[ $handle ]->src; $intended_strategy = $this->get_data( $handle, 'strategy' ); // For non-alias handles, an empty intended strategy filters all strategies. if ( ! $is_alias && empty( $intended_strategy ) ) { return array(); } // Handles with inline scripts attached in the 'after' position cannot be delayed. if ( $this->has_inline_script( $handle, 'after' ) ) { return array(); } // If the intended strategy is 'defer', filter out 'async'. if ( 'defer' === $intended_strategy ) { $eligible_strategies = array( 'defer' ); } $dependents = $this->get_dependents( $handle ); // Recursively filter eligible strategies for dependents. foreach ( $dependents as $dependent ) { // Bail early once we know the eligible strategy is blocking. if ( empty( $eligible_strategies ) ) { return array(); } $eligible_strategies = $this->filter_eligible_strategies( $dependent, $eligible_strategies, $checked ); } return $eligible_strategies; } /** * Gets data for inline scripts registered for a specific handle. * * @since 6.3.0 * * @param string $handle Name of the script to get data for. Must be lowercase. * @param string $position The position of the inline script. * @return bool Whether the handle has an inline script (either before or after). */ private function has_inline_script( $handle, $position = null ) { if ( $position && in_array( $position, array( 'before', 'after' ), true ) ) { return (bool) $this->get_data( $handle, $position ); } return (bool) ( $this->get_data( $handle, 'before' ) || $this->get_data( $handle, 'after' ) ); } /** * Resets class properties. * * @since 2.8.0 */ public function reset() { $this->do_concat = false; $this->print_code = ''; $this->concat = ''; $this->concat_version = ''; $this->print_html = ''; $this->ext_version = ''; $this->ext_handles = ''; } }