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0860bb2771
Prior to about 2013, many class methods lacked even access modifiers which made the `@access` notations that much more useful. Now that we've gotten to a point where the codebase is more mature from a maintenance perspective and we can finally remove these notations. Notable exceptions to this change include standalone functions notated as private as well as some classes still considered to represent "private" APIs. See #41452. Built from https://develop.svn.wordpress.org/trunk@41162 git-svn-id: http://core.svn.wordpress.org/trunk@41002 1a063a9b-81f0-0310-95a4-ce76da25c4cd
561 lines
14 KiB
PHP
561 lines
14 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 stylesheets.
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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 $default_dirs;
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/**
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* Constructor.
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*
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* @since 2.6.0
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*/
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public function __construct() {
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$this->init();
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add_action( 'init', array( $this, 'init' ), 0 );
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}
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/**
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* Initialize the class.
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*
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* @since 3.4.0
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*/
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public function init() {
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/**
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* Fires when the WP_Scripts instance is initialized.
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*
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* @since 2.6.0
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*
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* @param WP_Scripts &$this 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 mixed $handles Optional. Scripts to be printed. (void) prints queue, (string) prints
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* that script, (array of strings) prints those scripts. Default false.
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* @param int $group Optional. If scripts were queued in groups prints this group number.
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* Default false.
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* @return array 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, $group );
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}
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/**
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* Prints extra scripts of a registered script.
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*
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* @since 2.1.0
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* @since 2.8.0 Added the `$echo` 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 $echo Optional. Whether to echo the extra script instead of just returning it.
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* Default true.
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* @return bool|string|void Void if no data exists, extra scripts if `$echo` is true, true otherwise.
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*/
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public function print_scripts_l10n( $handle, $echo = 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, $echo );
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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 $echo Optional. Whether to echo the extra script instead of just returning it.
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* Default true.
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* @return bool|string|void Void if no data exists, extra scripts if `$echo` is true, true otherwise.
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*/
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public function print_extra_script( $handle, $echo = true ) {
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if ( !$output = $this->get_data( $handle, 'data' ) )
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return;
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if ( !$echo )
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return $output;
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echo "<script type='text/javascript'>\n"; // CDATA and type='text/javascript' is not needed for HTML 5
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echo "/* <![CDATA[ */\n";
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echo "$output\n";
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echo "/* ]]> */\n";
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echo "</script>\n";
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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: (int) level, (false) no groups. 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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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) $handle );
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$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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$src = $obj->src;
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$cond_before = $cond_after = '';
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$conditional = isset( $obj->extra['conditional'] ) ? $obj->extra['conditional'] : '';
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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_handle = $this->print_inline_script( $handle, 'before', false );
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$after_handle = $this->print_inline_script( $handle, 'after', false );
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if ( $before_handle ) {
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$before_handle = sprintf( "<script type='text/javascript'>\n%s\n</script>\n", $before_handle );
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}
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if ( $after_handle ) {
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$after_handle = sprintf( "<script type='text/javascript'>\n%s\n</script>\n", $after_handle );
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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 ( $this->in_default_dir( $srce ) && ( $before_handle || $after_handle ) ) {
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$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 ( ! $obj->src ) {
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return true;
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}
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if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && 0 === strpos( $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, $src );
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/** This filter is documented in wp-includes/class.wp-scripts.php */
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$src = esc_url( apply_filters( 'script_loader_src', $src, $handle ) );
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if ( ! $src )
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return true;
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$tag = "{$cond_before}{$before_handle}<script type='text/javascript' src='$src'></script>\n{$after_handle}{$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. 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 before the handle
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* 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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*
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* @param string $handle Name of the script to add the inline script to. Must be lowercase.
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* @param string $position Optional. Whether to add the inline script before the handle
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* or after. Default 'after'.
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* @param bool $echo Optional. Whether to echo the script instead of just returning it.
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* Default true.
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* @return string|false Script on success, false otherwise.
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*/
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public function print_inline_script( $handle, $position = 'after', $echo = true ) {
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$output = $this->get_data( $handle, $position );
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if ( empty( $output ) ) {
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return false;
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}
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$output = trim( implode( "\n", $output ), "\n" );
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if ( $echo ) {
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printf( "<script type='text/javascript'>\n%s\n</script>\n", $output );
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}
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return $output;
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}
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/**
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* Localizes a script, only if the script has already been added.
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*
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* @since 2.1.0
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*
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* @param string $handle
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* @param string $object_name
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* @param array $l10n
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* @return bool
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*/
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public function localize( $handle, $object_name, $l10n ) {
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if ( $handle === 'jquery' )
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$handle = 'jquery-core';
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if ( is_array($l10n) && isset($l10n['l10n_print_after']) ) { // back compat, preserve the code in 'l10n_print_after' if present
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$after = $l10n['l10n_print_after'];
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unset($l10n['l10n_print_after']);
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}
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foreach ( (array) $l10n as $key => $value ) {
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if ( !is_scalar($value) )
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continue;
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$l10n[$key] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8');
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}
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$script = "var $object_name = " . wp_json_encode( $l10n ) . ';';
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if ( !empty($after) )
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$script .= "\n$after;";
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$data = $this->get_data( $handle, 'data' );
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if ( !empty( $data ) )
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$script = "$data\n$script";
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return $this->add_data( $handle, 'data', $script );
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}
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/**
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* Sets handle group.
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*
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* @since 2.8.0
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*
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* @see WP_Dependencies::set_group()
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*
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* @param string $handle Name of the item. Should be unique.
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* @param bool $recursion Internal flag that calling function was called recursively.
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* @param int|false $group Optional. Group level: (int) level, (false) no groups. Default false.
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* @return bool Not already in the group or a lower group
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*/
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public function set_group( $handle, $recursion, $group = false ) {
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if ( isset( $this->registered[$handle]->args ) && $this->registered[$handle]->args === 1 )
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$grp = 1;
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else
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$grp = (int) $this->get_data( $handle, 'group' );
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if ( false !== $group && $grp > $group )
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$grp = $group;
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return parent::set_group( $handle, $recursion, $grp );
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}
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/**
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* Determines script dependencies.
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*
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* @since 2.1.0
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*
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* @see WP_Dependencies::all_deps()
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*
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* @param mixed $handles Item handle and argument (string) or item handles and arguments (array of strings).
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* @param bool $recursion Internal flag that function is calling itself.
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* @param int|false $group Optional. Group level: (int) level, (false) no groups. Default false.
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* @return bool True on success, false on failure.
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*/
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public function all_deps( $handles, $recursion = false, $group = false ) {
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$r = parent::all_deps( $handles, $recursion, $group );
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if ( ! $recursion ) {
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/**
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* Filters the list of script dependencies left to print.
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*
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* @since 2.3.0
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*
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* @param array $to_do An array of script dependencies.
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*/
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$this->to_do = apply_filters( 'print_scripts_array', $this->to_do );
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}
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return $r;
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}
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/**
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* Processes items and dependencies for the head group.
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*
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* @since 2.8.0
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*
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* @see WP_Dependencies::do_items()
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*
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* @return array Handles of items that have been processed.
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*/
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public function do_head_items() {
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$this->do_items(false, 0);
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return $this->done;
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}
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/**
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* Processes items and dependencies for the footer group.
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*
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* @since 2.8.0
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*
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* @see WP_Dependencies::do_items()
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*
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* @return array Handles of items that have been processed.
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*/
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public function do_footer_items() {
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$this->do_items(false, 1);
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return $this->done;
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}
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/**
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* Whether a handle's source is in a default directory.
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*
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* @since 2.8.0
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*
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* @param string $src The source of the enqueued script.
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* @return bool True if found, false if not.
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*/
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public function in_default_dir( $src ) {
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if ( ! $this->default_dirs ) {
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return true;
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}
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if ( 0 === strpos( $src, '/' . WPINC . '/js/l10n' ) ) {
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return false;
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}
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foreach ( (array) $this->default_dirs as $test ) {
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if ( 0 === strpos( $src, $test ) ) {
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return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* 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 = '';
|
|
}
|
|
}
|