WordPress/wp-includes/functions.wp-scripts.php

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<?php
/**
* Dependencies API: Scripts functions
*
* @since 2.6.0
*
* @package WordPress
* @subpackage Dependencies
*/
/**
* Initialize $wp_scripts if it has not been set.
*
* @global WP_Scripts $wp_scripts
*
* @since 4.2.0
*
* @return WP_Scripts WP_Scripts instance.
*/
function wp_scripts() {
global $wp_scripts;
if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
$wp_scripts = new WP_Scripts();
}
return $wp_scripts;
}
/**
* Helper function to output a _doing_it_wrong message when applicable.
*
* @ignore
* @since 4.2.0
*
* @param string $function Function name.
*/
function _wp_scripts_maybe_doing_it_wrong( $function ) {
if ( did_action( 'init' ) || did_action( 'admin_enqueue_scripts' ) || did_action( 'wp_enqueue_scripts' ) || did_action( 'login_enqueue_scripts' ) ) {
return;
}
_doing_it_wrong(
$function, sprintf(
/* translators: 1: wp_enqueue_scripts, 2: admin_enqueue_scripts, 3: login_enqueue_scripts */
__( 'Scripts and styles should not be registered or enqueued until the %1$s, %2$s, or %3$s hooks.' ),
'<code>wp_enqueue_scripts</code>',
'<code>admin_enqueue_scripts</code>',
'<code>login_enqueue_scripts</code>'
), '3.3.0'
);
}
/**
* Prints scripts in document head that are in the $handles queue.
*
* Called by admin-header.php and {@see 'wp_head'} hook. Since it is called by wp_head on every page load,
* the function does not instantiate the WP_Scripts object unless script names are explicitly passed.
* Makes use of already-instantiated $wp_scripts global if present. Use provided {@see 'wp_print_scripts'}
* hook to register/enqueue new scripts.
*
* @see WP_Scripts::do_items()
* @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts.
*
* @since 2.1.0
*
* @param string|bool|array $handles Optional. Scripts to be printed. Default 'false'.
* @return array On success, a processed array of WP_Dependencies items; otherwise, an empty array.
*/
function wp_print_scripts( $handles = false ) {
/**
* Fires before scripts in the $handles queue are printed.
*
* @since 2.1.0
*/
do_action( 'wp_print_scripts' );
if ( '' === $handles ) { // for wp_head
$handles = false;
}
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
global $wp_scripts;
if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
if ( ! $handles ) {
return array(); // No need to instantiate if nothing is there.
}
}
return wp_scripts()->do_items( $handles );
}
/**
* Adds extra code to a registered script.
*
* Code will only be added if the script in already in the queue.
* Accepts a string $data containing the Code. If two or more code blocks
* are added to the same script $handle, they will be printed in the order
* they were added, i.e. the latter added code can redeclare the previous.
*
* @since 4.5.0
*
* @see WP_Scripts::add_inline_script()
*
* @param string $handle Name of the script to add the inline script to.
* @param string $data String containing the javascript to be added.
* @param string $position Optional. Whether to add the inline script before the handle
* or after. Default 'after'.
* @return bool True on success, false on failure.
*/
function wp_add_inline_script( $handle, $data, $position = 'after' ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
if ( false !== stripos( $data, '</script>' ) ) {
_doing_it_wrong(
__FUNCTION__, sprintf(
/* translators: 1: <script>, 2: wp_add_inline_script() */
__( 'Do not pass %1$s tags to %2$s.' ),
'<code>&lt;script&gt;</code>',
'<code>wp_add_inline_script()</code>'
), '4.5.0'
);
$data = trim( preg_replace( '#<script[^>]*>(.*)</script>#is', '$1', $data ) );
}
return wp_scripts()->add_inline_script( $handle, $data, $position );
}
/**
* Register a new script.
*
* Registers a script to be enqueued later using the wp_enqueue_script() function.
*
* @see WP_Dependencies::add()
* @see WP_Dependencies::add_data()
*
* @since 2.1.0
* @since 4.3.0 A return value was added.
*
* @param string $handle Name of the script. Should be unique.
* @param string $src Full URL of the script, or path of the script relative to the WordPress root directory.
* @param array $deps Optional. An array of registered script handles this script depends on. Default empty array.
* @param string|bool|null $ver Optional. String specifying script version number, if it has one, which is added to the URL
* as a query string for cache busting purposes. If version is set to false, a version
* number is automatically added equal to current installed WordPress version.
* If set to null, no version is added.
* @param bool $in_footer Optional. Whether to enqueue the script before </body> instead of in the <head>.
* Default 'false'.
* @return bool Whether the script has been registered. True on success, false on failure.
*/
function wp_register_script( $handle, $src, $deps = array(), $ver = false, $in_footer = false ) {
$wp_scripts = wp_scripts();
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
$registered = $wp_scripts->add( $handle, $src, $deps, $ver );
if ( $in_footer ) {
$wp_scripts->add_data( $handle, 'group', 1 );
}
return $registered;
}
/**
* Localize a script.
*
* Works only if the script has already been added.
*
* Accepts an associative array $l10n and creates a JavaScript object:
*
* "$object_name" = {
* key: value,
* key: value,
* ...
* }
*
* @see WP_Dependencies::localize()
* @link https://core.trac.wordpress.org/ticket/11520
* @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts.
*
* @since 2.2.0
*
* @todo Documentation cleanup
*
* @param string $handle Script handle the data will be attached to.
* @param string $object_name Name for the JavaScript object. Passed directly, so it should be qualified JS variable.
* Example: '/[a-zA-Z0-9_]+/'.
* @param array $l10n The data itself. The data can be either a single or multi-dimensional array.
* @return bool True if the script was successfully localized, false otherwise.
*/
function wp_localize_script( $handle, $object_name, $l10n ) {
global $wp_scripts;
if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
return false;
}
return $wp_scripts->localize( $handle, $object_name, $l10n );
}
/**
* Remove a registered script.
*
* Note: there are intentional safeguards in place to prevent critical admin scripts,
* such as jQuery core, from being unregistered.
*
* @see WP_Dependencies::remove()
*
* @since 2.1.0
*
* @param string $handle Name of the script to be removed.
*/
function wp_deregister_script( $handle ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
/**
* Do not allow accidental or negligent de-registering of critical scripts in the admin.
* Show minimal remorse if the correct hook is used.
*/
$current_filter = current_filter();
if ( ( is_admin() && 'admin_enqueue_scripts' !== $current_filter ) ||
( 'wp-login.php' === $GLOBALS['pagenow'] && 'login_enqueue_scripts' !== $current_filter )
) {
$no = array(
'jquery',
'jquery-core',
'jquery-migrate',
'jquery-ui-core',
'jquery-ui-accordion',
'jquery-ui-autocomplete',
'jquery-ui-button',
'jquery-ui-datepicker',
'jquery-ui-dialog',
'jquery-ui-draggable',
'jquery-ui-droppable',
'jquery-ui-menu',
'jquery-ui-mouse',
'jquery-ui-position',
'jquery-ui-progressbar',
'jquery-ui-resizable',
'jquery-ui-selectable',
'jquery-ui-slider',
'jquery-ui-sortable',
'jquery-ui-spinner',
'jquery-ui-tabs',
'jquery-ui-tooltip',
'jquery-ui-widget',
'underscore',
'backbone',
);
if ( in_array( $handle, $no ) ) {
$message = sprintf(
/* translators: 1: script name, 2: wp_enqueue_scripts */
__( 'Do not deregister the %1$s script in the administration area. To target the front-end theme, use the %2$s hook.' ),
"<code>$handle</code>",
'<code>wp_enqueue_scripts</code>'
);
_doing_it_wrong( __FUNCTION__, $message, '3.6.0' );
return;
}
}
wp_scripts()->remove( $handle );
}
/**
* Enqueue a script.
*
* Registers the script if $src provided (does NOT overwrite), and enqueues it.
*
* @see WP_Dependencies::add()
* @see WP_Dependencies::add_data()
* @see WP_Dependencies::enqueue()
*
* @since 2.1.0
*
* @param string $handle Name of the script. Should be unique.
* @param string $src Full URL of the script, or path of the script relative to the WordPress root directory.
* Default empty.
* @param array $deps Optional. An array of registered script handles this script depends on. Default empty array.
* @param string|bool|null $ver Optional. String specifying script version number, if it has one, which is added to the URL
* as a query string for cache busting purposes. If version is set to false, a version
* number is automatically added equal to current installed WordPress version.
* If set to null, no version is added.
* @param bool $in_footer Optional. Whether to enqueue the script before </body> instead of in the <head>.
* Default 'false'.
*/
function wp_enqueue_script( $handle, $src = '', $deps = array(), $ver = false, $in_footer = false ) {
$wp_scripts = wp_scripts();
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
if ( $src || $in_footer ) {
$_handle = explode( '?', $handle );
if ( $src ) {
$wp_scripts->add( $_handle[0], $src, $deps, $ver );
}
if ( $in_footer ) {
$wp_scripts->add_data( $_handle[0], 'group', 1 );
}
}
$wp_scripts->enqueue( $handle );
}
/**
* Remove a previously enqueued script.
*
* @see WP_Dependencies::dequeue()
*
* @since 3.1.0
*
* @param string $handle Name of the script to be removed.
*/
function wp_dequeue_script( $handle ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
wp_scripts()->dequeue( $handle );
}
/**
Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. These notations largely serve to direct consumers (of both the source and the parsed code reference) to extended information on individual and related conditional tags throughout WordPress. The changeset also standardizes corresponding DocBlock summaries to use third-person singular verbs. Notations been added for the following functions: * comments_open() * email exists() * has_excerpt() * has_post_thumbnail() * has_tag() * in_category() * in_the_loop() * is_404() * is_active_sidebar() * is_active_widget() * is_admin() * is_admin_bar_showing() * is_archive() * is_attachment() * is_author() * is_blog_installed() * is_category() * is_comments_popup() * is_date() * is_day() * is_dynamic_sidebar() * is_feed() * is_front_page() * is_home() * is_local_attachment() * is_main_query * is_month() * is_multi_author * is_new_day() * is_page() * is_page_template() * is_paged() * is_plugin_active() * is_plugin_active_for_network() * is_plugin_inactive() * is_plugin_page() * is_post_type_archive() * is_preview() * is_rtl() * is_search() * is_single() * is_singular() * is_sticky() * is_tag() * is_tax() * is_taxonomy_hierarchical() * is_time() * is_trackback() * is_user_logged_in() * is_year() * pings_open() * post_type_exists() * taxonomy_exists() * term_exists() * username exists() * wp_attachment_is_image() * wp_script_is() Props janalwin. Fixes #43254. Built from https://develop.svn.wordpress.org/trunk@42710 git-svn-id: http://core.svn.wordpress.org/trunk@42538 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-02-13 11:54:31 -05:00
* Determines whether a script has been added to the queue.
*
Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. These notations largely serve to direct consumers (of both the source and the parsed code reference) to extended information on individual and related conditional tags throughout WordPress. The changeset also standardizes corresponding DocBlock summaries to use third-person singular verbs. Notations been added for the following functions: * comments_open() * email exists() * has_excerpt() * has_post_thumbnail() * has_tag() * in_category() * in_the_loop() * is_404() * is_active_sidebar() * is_active_widget() * is_admin() * is_admin_bar_showing() * is_archive() * is_attachment() * is_author() * is_blog_installed() * is_category() * is_comments_popup() * is_date() * is_day() * is_dynamic_sidebar() * is_feed() * is_front_page() * is_home() * is_local_attachment() * is_main_query * is_month() * is_multi_author * is_new_day() * is_page() * is_page_template() * is_paged() * is_plugin_active() * is_plugin_active_for_network() * is_plugin_inactive() * is_plugin_page() * is_post_type_archive() * is_preview() * is_rtl() * is_search() * is_single() * is_singular() * is_sticky() * is_tag() * is_tax() * is_taxonomy_hierarchical() * is_time() * is_trackback() * is_user_logged_in() * is_year() * pings_open() * post_type_exists() * taxonomy_exists() * term_exists() * username exists() * wp_attachment_is_image() * wp_script_is() Props janalwin. Fixes #43254. Built from https://develop.svn.wordpress.org/trunk@42710 git-svn-id: http://core.svn.wordpress.org/trunk@42538 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-02-13 11:54:31 -05:00
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions. These notations largely serve to direct consumers (of both the source and the parsed code reference) to extended information on individual and related conditional tags throughout WordPress. The changeset also standardizes corresponding DocBlock summaries to use third-person singular verbs. Notations been added for the following functions: * comments_open() * email exists() * has_excerpt() * has_post_thumbnail() * has_tag() * in_category() * in_the_loop() * is_404() * is_active_sidebar() * is_active_widget() * is_admin() * is_admin_bar_showing() * is_archive() * is_attachment() * is_author() * is_blog_installed() * is_category() * is_comments_popup() * is_date() * is_day() * is_dynamic_sidebar() * is_feed() * is_front_page() * is_home() * is_local_attachment() * is_main_query * is_month() * is_multi_author * is_new_day() * is_page() * is_page_template() * is_paged() * is_plugin_active() * is_plugin_active_for_network() * is_plugin_inactive() * is_plugin_page() * is_post_type_archive() * is_preview() * is_rtl() * is_search() * is_single() * is_singular() * is_sticky() * is_tag() * is_tax() * is_taxonomy_hierarchical() * is_time() * is_trackback() * is_user_logged_in() * is_year() * pings_open() * post_type_exists() * taxonomy_exists() * term_exists() * username exists() * wp_attachment_is_image() * wp_script_is() Props janalwin. Fixes #43254. Built from https://develop.svn.wordpress.org/trunk@42710 git-svn-id: http://core.svn.wordpress.org/trunk@42538 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-02-13 11:54:31 -05:00
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 2.8.0
* @since 3.5.0 'enqueued' added as an alias of the 'queue' list.
*
* @param string $handle Name of the script.
* @param string $list Optional. Status of the script to check. Default 'enqueued'.
* Accepts 'enqueued', 'registered', 'queue', 'to_do', and 'done'.
* @return bool Whether the script is queued.
*/
function wp_script_is( $handle, $list = 'enqueued' ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
return (bool) wp_scripts()->query( $handle, $list );
}
/**
* Add metadata to a script.
*
* Works only if the script has already been added.
*
* Possible values for $key and $value:
* 'conditional' string Comments for IE 6, lte IE 7, etc.
*
* @since 4.2.0
*
* @see WP_Dependency::add_data()
*
* @param string $handle Name of the script.
* @param string $key Name of data point for which we're storing a value.
* @param mixed $value String containing the data to be added.
* @return bool True on success, false on failure.
*/
function wp_script_add_data( $handle, $key, $value ) {
return wp_scripts()->add_data( $handle, $key, $value );
}