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aed15fedb9
This private method was introduced in [56033] / #12009 but it's not actually used. It was part of the inline script implementation which was later reverted before final merge. The method can be safely removed because it’s private and cannot be used by extenders. Props joemcgill. Fixes #60438. Built from https://develop.svn.wordpress.org/trunk@57533 git-svn-id: http://core.svn.wordpress.org/trunk@57034 1a063a9b-81f0-0310-95a4-ce76da25c4cd
1014 lines
27 KiB
PHP
1014 lines
27 KiB
PHP
<?php
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/**
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* Dependencies API: WP_Scripts class
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*
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* @since 2.6.0
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*
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* @package WordPress
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* @subpackage Dependencies
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*/
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/**
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* Core class used to register scripts.
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*
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* @since 2.1.0
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*
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* @see WP_Dependencies
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*/
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class WP_Scripts extends WP_Dependencies {
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/**
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* Base URL for scripts.
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*
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* Full URL with trailing slash.
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*
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* @since 2.6.0
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* @var string
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*/
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public $base_url;
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/**
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* URL of the content directory.
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*
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* @since 2.8.0
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* @var string
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*/
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public $content_url;
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/**
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* Default version string for scripts.
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*
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* @since 2.6.0
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* @var string
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*/
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public $default_version;
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/**
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* Holds handles of scripts which are enqueued in footer.
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*
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* @since 2.8.0
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* @var array
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*/
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public $in_footer = array();
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/**
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* Holds a list of script handles which will be concatenated.
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*
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* @since 2.8.0
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* @var string
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*/
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public $concat = '';
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/**
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* Holds a string which contains script handles and their version.
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*
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* @since 2.8.0
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* @deprecated 3.4.0
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* @var string
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*/
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public $concat_version = '';
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/**
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* Whether to perform concatenation.
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*
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* @since 2.8.0
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* @var bool
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*/
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public $do_concat = false;
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/**
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* Holds HTML markup of scripts and additional data if concatenation
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* is enabled.
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*
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* @since 2.8.0
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* @var string
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*/
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public $print_html = '';
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/**
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* Holds inline code if concatenation is enabled.
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*
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* @since 2.8.0
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* @var string
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*/
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public $print_code = '';
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/**
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* Holds a list of script handles which are not in the default directory
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* if concatenation is enabled.
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*
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* Unused in core.
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*
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* @since 2.8.0
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* @var string
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*/
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public $ext_handles = '';
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/**
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* Holds a string which contains handles and versions of scripts which
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* are not in the default directory if concatenation is enabled.
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*
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* Unused in core.
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*
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* @since 2.8.0
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* @var string
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*/
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public $ext_version = '';
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/**
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* List of default directories.
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*
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* @since 2.8.0
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* @var array
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*/
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public $default_dirs;
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/**
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* Holds a mapping of dependents (as handles) for a given script handle.
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* Used to optimize recursive dependency tree checks.
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*
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* @since 6.3.0
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* @var array
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*/
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private $dependents_map = array();
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/**
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* Holds a reference to the delayed (non-blocking) script loading strategies.
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* Used by methods that validate loading strategies.
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*
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* @since 6.3.0
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* @var string[]
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*/
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private $delayed_strategies = array( 'defer', 'async' );
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/**
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* Constructor.
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*
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* @since 2.6.0
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*/
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public function __construct() {
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$this->init();
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add_action( 'init', array( $this, 'init' ), 0 );
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}
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/**
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* Initialize the class.
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*
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* @since 3.4.0
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*/
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public function init() {
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/**
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* Fires when the WP_Scripts instance is initialized.
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*
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* @since 2.6.0
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*
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* @param WP_Scripts $wp_scripts WP_Scripts instance (passed by reference).
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*/
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do_action_ref_array( 'wp_default_scripts', array( &$this ) );
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}
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/**
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* Prints scripts.
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*
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* Prints the scripts passed to it or the print queue. Also prints all necessary dependencies.
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*
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* @since 2.1.0
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* @since 2.8.0 Added the `$group` parameter.
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*
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* @param string|string[]|false $handles Optional. Scripts to be printed: queue (false),
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* single script (string), or multiple scripts (array of strings).
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* Default false.
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* @param int|false $group Optional. Group level: level (int), no groups (false).
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* Default false.
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* @return string[] Handles of scripts that have been printed.
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*/
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public function print_scripts( $handles = false, $group = false ) {
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return $this->do_items( $handles, $group );
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}
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/**
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* Prints extra scripts of a registered script.
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*
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* @since 2.1.0
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* @since 2.8.0 Added the `$display` parameter.
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* @deprecated 3.3.0
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*
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* @see print_extra_script()
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*
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* @param string $handle The script's registered handle.
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* @param bool $display Optional. Whether to print the extra script
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* instead of just returning it. Default true.
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* @return bool|string|void Void if no data exists, extra scripts if `$display` is true,
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* true otherwise.
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*/
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public function print_scripts_l10n( $handle, $display = true ) {
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_deprecated_function( __FUNCTION__, '3.3.0', 'WP_Scripts::print_extra_script()' );
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return $this->print_extra_script( $handle, $display );
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}
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/**
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* Prints extra scripts of a registered script.
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*
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* @since 3.3.0
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*
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* @param string $handle The script's registered handle.
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* @param bool $display Optional. Whether to print the extra script
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* instead of just returning it. Default true.
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* @return bool|string|void Void if no data exists, extra scripts if `$display` is true,
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* true otherwise.
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*/
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public function print_extra_script( $handle, $display = true ) {
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$output = $this->get_data( $handle, 'data' );
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if ( ! $output ) {
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return;
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}
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if ( ! $display ) {
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return $output;
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}
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wp_print_inline_script_tag( $output, array( 'id' => "{$handle}-js-extra" ) );
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return true;
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}
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/**
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* Checks whether all dependents of a given handle are in the footer.
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*
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* If there are no dependents, this is considered the same as if all dependents were in the footer.
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*
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* @since 6.4.0
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*
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* @param string $handle Script handle.
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* @return bool Whether all dependents are in the footer.
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*/
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private function are_all_dependents_in_footer( $handle ) {
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foreach ( $this->get_dependents( $handle ) as $dep ) {
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if ( isset( $this->groups[ $dep ] ) && 0 === $this->groups[ $dep ] ) {
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return false;
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}
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}
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return true;
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}
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/**
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* Processes a script dependency.
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*
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* @since 2.6.0
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* @since 2.8.0 Added the `$group` parameter.
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*
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* @see WP_Dependencies::do_item()
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*
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* @param string $handle The script's registered handle.
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* @param int|false $group Optional. Group level: level (int), no groups (false).
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* Default false.
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* @return bool True on success, false on failure.
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*/
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public function do_item( $handle, $group = false ) {
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if ( ! parent::do_item( $handle ) ) {
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return false;
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}
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if ( 0 === $group && $this->groups[ $handle ] > 0 ) {
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$this->in_footer[] = $handle;
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return false;
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}
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if ( false === $group && in_array( $handle, $this->in_footer, true ) ) {
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$this->in_footer = array_diff( $this->in_footer, (array) $handle );
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}
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$obj = $this->registered[ $handle ];
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if ( null === $obj->ver ) {
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$ver = '';
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} else {
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$ver = $obj->ver ? $obj->ver : $this->default_version;
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}
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if ( isset( $this->args[ $handle ] ) ) {
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$ver = $ver ? $ver . '&' . $this->args[ $handle ] : $this->args[ $handle ];
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}
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$src = $obj->src;
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$strategy = $this->get_eligible_loading_strategy( $handle );
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$intended_strategy = (string) $this->get_data( $handle, 'strategy' );
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$cond_before = '';
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$cond_after = '';
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$conditional = isset( $obj->extra['conditional'] ) ? $obj->extra['conditional'] : '';
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if ( ! $this->is_delayed_strategy( $intended_strategy ) ) {
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$intended_strategy = '';
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}
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/*
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* Move this script to the footer if:
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* 1. The script is in the header group.
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* 2. The current output is the header.
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* 3. The intended strategy is delayed.
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* 4. The actual strategy is not delayed.
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* 5. All dependent scripts are in the footer.
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*/
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if (
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0 === $group &&
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0 === $this->groups[ $handle ] &&
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$intended_strategy &&
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! $this->is_delayed_strategy( $strategy ) &&
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$this->are_all_dependents_in_footer( $handle )
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) {
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$this->in_footer[] = $handle;
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return false;
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}
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if ( $conditional ) {
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$cond_before = "<!--[if {$conditional}]>\n";
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$cond_after = "<![endif]-->\n";
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}
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$before_script = $this->get_inline_script_tag( $handle, 'before' );
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$after_script = $this->get_inline_script_tag( $handle, 'after' );
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if ( $before_script || $after_script ) {
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$inline_script_tag = $cond_before . $before_script . $after_script . $cond_after;
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} else {
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$inline_script_tag = '';
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}
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/*
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* Prevent concatenation of scripts if the text domain is defined
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* to ensure the dependency order is respected.
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*/
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$translations_stop_concat = ! empty( $obj->textdomain );
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$translations = $this->print_translations( $handle, false );
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if ( $translations ) {
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$translations = wp_get_inline_script_tag( $translations, array( 'id' => "{$handle}-js-translations" ) );
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}
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if ( $this->do_concat ) {
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/**
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* Filters the script loader source.
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*
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* @since 2.2.0
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*
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* @param string $src Script loader source path.
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* @param string $handle Script handle.
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*/
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$srce = apply_filters( 'script_loader_src', $src, $handle );
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if (
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$this->in_default_dir( $srce )
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&& ( $before_script || $after_script || $translations_stop_concat || $this->is_delayed_strategy( $strategy ) )
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) {
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$this->do_concat = false;
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// Have to print the so-far concatenated scripts right away to maintain the right order.
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_print_scripts();
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$this->reset();
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} elseif ( $this->in_default_dir( $srce ) && ! $conditional ) {
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$this->print_code .= $this->print_extra_script( $handle, false );
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$this->concat .= "$handle,";
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$this->concat_version .= "$handle$ver";
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return true;
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} else {
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$this->ext_handles .= "$handle,";
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$this->ext_version .= "$handle$ver";
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}
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}
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$has_conditional_data = $conditional && $this->get_data( $handle, 'data' );
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if ( $has_conditional_data ) {
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echo $cond_before;
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}
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$this->print_extra_script( $handle );
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if ( $has_conditional_data ) {
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echo $cond_after;
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}
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// A single item may alias a set of items, by having dependencies, but no source.
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if ( ! $src ) {
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if ( $inline_script_tag ) {
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if ( $this->do_concat ) {
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$this->print_html .= $inline_script_tag;
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} else {
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echo $inline_script_tag;
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}
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}
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return true;
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}
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if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && str_starts_with( $src, $this->content_url ) ) ) {
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$src = $this->base_url . $src;
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}
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if ( ! empty( $ver ) ) {
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$src = add_query_arg( 'ver', $ver, $src );
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}
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/** This filter is documented in wp-includes/class-wp-scripts.php */
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$src = esc_url_raw( apply_filters( 'script_loader_src', $src, $handle ) );
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if ( ! $src ) {
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return true;
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}
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$attr = array(
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'src' => $src,
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'id' => "{$handle}-js",
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);
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if ( $strategy ) {
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$attr[ $strategy ] = true;
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}
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if ( $intended_strategy ) {
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$attr['data-wp-strategy'] = $intended_strategy;
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}
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$tag = $translations . $cond_before . $before_script;
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$tag .= wp_get_script_tag( $attr );
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$tag .= $after_script . $cond_after;
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/**
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* Filters the HTML script tag of an enqueued script.
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*
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* @since 4.1.0
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*
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* @param string $tag The `<script>` tag for the enqueued script.
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* @param string $handle The script's registered handle.
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* @param string $src The script's source URL.
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*/
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$tag = apply_filters( 'script_loader_tag', $tag, $handle, $src );
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if ( $this->do_concat ) {
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$this->print_html .= $tag;
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} else {
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echo $tag;
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}
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return true;
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}
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/**
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* Adds extra code to a registered script.
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*
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* @since 4.5.0
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*
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* @param string $handle Name of the script to add the inline script to.
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* Must be lowercase.
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* @param string $data String containing the JavaScript to be added.
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* @param string $position Optional. Whether to add the inline script
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* before the handle or after. Default 'after'.
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* @return bool True on success, false on failure.
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*/
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public function add_inline_script( $handle, $data, $position = 'after' ) {
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if ( ! $data ) {
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return false;
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}
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if ( 'after' !== $position ) {
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$position = 'before';
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}
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$script = (array) $this->get_data( $handle, $position );
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$script[] = $data;
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return $this->add_data( $handle, $position, $script );
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}
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/**
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* Prints inline scripts registered for a specific handle.
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*
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* @since 4.5.0
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* @deprecated 6.3.0 Use methods get_inline_script_tag() or get_inline_script_data() instead.
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*
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* @param string $handle Name of the script to print inline scripts for.
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* Must be lowercase.
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* @param string $position Optional. Whether to add the inline script
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* before the handle or after. Default 'after'.
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* @param bool $display Optional. Whether to print the script tag
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* instead of just returning the script data. Default true.
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* @return string|false Script data on success, false otherwise.
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*/
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public function print_inline_script( $handle, $position = 'after', $display = true ) {
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_deprecated_function( __METHOD__, '6.3.0', 'WP_Scripts::get_inline_script_data() or WP_Scripts::get_inline_script_tag()' );
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$output = $this->get_inline_script_data( $handle, $position );
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if ( empty( $output ) ) {
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return false;
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}
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if ( $display ) {
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echo $this->get_inline_script_tag( $handle, $position );
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}
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return $output;
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}
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|
|
/**
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* Gets data for inline scripts registered for a specific handle.
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*
|
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* @since 6.3.0
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*
|
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* @param string $handle Name of the script to get data for.
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* Must be lowercase.
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* @param string $position Optional. Whether to add the inline script
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* before the handle or after. Default 'after'.
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* @return string Inline script, which may be empty string.
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*/
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public function get_inline_script_data( $handle, $position = 'after' ) {
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$data = $this->get_data( $handle, $position );
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if ( empty( $data ) || ! is_array( $data ) ) {
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return '';
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}
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return trim( implode( "\n", $data ), "\n" );
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}
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|
|
/**
|
|
* Gets tags for inline scripts registered for a specific handle.
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*
|
|
* @since 6.3.0
|
|
*
|
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* @param string $handle Name of the script to get associated inline script tag for.
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* Must be lowercase.
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* @param string $position Optional. Whether to get tag for inline
|
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* scripts in the before or after position. Default 'after'.
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* @return string Inline script, which may be empty string.
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*/
|
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public function get_inline_script_tag( $handle, $position = 'after' ) {
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$js = $this->get_inline_script_data( $handle, $position );
|
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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$s function instead.' ),
|
|
'<code>$l10n</code>',
|
|
'<code>wp_add_inline_script()</code>'
|
|
),
|
|
'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 ) {
|
|
$grp = 1;
|
|
} else {
|
|
$grp = (int) $this->get_data( $handle, 'group' );
|
|
}
|
|
|
|
if ( false !== $group && $grp > $group ) {
|
|
$grp = $group;
|
|
}
|
|
|
|
return parent::set_group( $handle, $recursion, $grp );
|
|
}
|
|
|
|
/**
|
|
* Sets a translation textdomain.
|
|
*
|
|
* @since 5.0.0
|
|
* @since 5.1.0 The `$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;
|
|
}
|
|
|
|
$output = <<<JS
|
|
( function( domain, translations ) {
|
|
var localeData = translations.locale_data[ domain ] || translations.locale_data.messages;
|
|
localeData[""].domain = domain;
|
|
wp.i18n.setLocaleData( localeData, domain );
|
|
} )( "{$domain}", {$json_translations} );
|
|
JS;
|
|
|
|
if ( $display ) {
|
|
wp_print_inline_script_tag( $output, array( 'id' => "{$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 ) {
|
|
$r = 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 $r;
|
|
}
|
|
|
|
/**
|
|
* 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 = (string) $this->get_data( $handle, 'strategy' );
|
|
|
|
// Bail early if there is no intended strategy.
|
|
if ( ! $intended ) {
|
|
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 = ( 'defer' === $intended ) ? array( 'defer' ) : null;
|
|
|
|
$eligible = $this->filter_eligible_strategies( $handle, $initial );
|
|
|
|
// Return early once we know the eligible strategy is blocking.
|
|
if ( empty( $eligible ) ) {
|
|
return '';
|
|
}
|
|
|
|
return in_array( 'async', $eligible, 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 Optional. The list of strategies to filter. Default null.
|
|
* @param array<string, true> $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 = null, $checked = array() ) {
|
|
// If no strategies are being passed, all strategies are eligible.
|
|
if ( null === $eligible ) {
|
|
$eligible = $this->delayed_strategies;
|
|
}
|
|
|
|
// If this handle was already checked, return early.
|
|
if ( isset( $checked[ $handle ] ) ) {
|
|
return $eligible;
|
|
}
|
|
|
|
// 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;
|
|
}
|
|
|
|
// If the handle is not enqueued, don't filter anything and return.
|
|
if ( ! $this->query( $handle, 'enqueued' ) ) {
|
|
return $eligible;
|
|
}
|
|
|
|
$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 = 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 ) ) {
|
|
return array();
|
|
}
|
|
|
|
$eligible = $this->filter_eligible_strategies( $dependent, $eligible, $checked );
|
|
}
|
|
|
|
return $eligible;
|
|
}
|
|
|
|
/**
|
|
* 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 = '';
|
|
}
|
|
}
|