WordPress/wp-content/themes/twentytwenty/classes/class-twentytwenty-script-loader.php
Sergey Biryukov 6677070a13 Bundled Themes: Correct @since tags to refer to the theme version instead of WordPress version.
This makes `@since` notations in Twenty Seventeen, Twenty Nineteen, and Twenty Twenty consistent with the previous bundled themes.

See #48303.
Built from https://develop.svn.wordpress.org/trunk@46827


git-svn-id: http://core.svn.wordpress.org/trunk@46627 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2019-12-07 13:56:06 +00:00

48 lines
1.2 KiB
PHP

<?php
/**
* Javascript Loader Class
*
* Allow `async` and `defer` while enqueuing Javascript.
*
* Based on a solution in WP Rig.
*
* @package WordPress
* @subpackage Twenty_Twenty
* @since Twenty Twenty 1.0
*/
if ( ! class_exists( 'TwentyTwenty_Script_Loader' ) ) {
/**
* A class that provides a way to add `async` or `defer` attributes to scripts.
*/
class TwentyTwenty_Script_Loader {
/**
* Adds async/defer attributes to enqueued / registered scripts.
*
* If #12009 lands in WordPress, this function can no-op since it would be handled in core.
*
* @link https://core.trac.wordpress.org/ticket/12009
*
* @param string $tag The script tag.
* @param string $handle The script handle.
* @return string Script HTML string.
*/
public function filter_script_loader_tag( $tag, $handle ) {
foreach ( [ 'async', 'defer' ] as $attr ) {
if ( ! wp_scripts()->get_data( $handle, $attr ) ) {
continue;
}
// Prevent adding attribute when already added in #12009.
if ( ! preg_match( ":\s$attr(=|>|\s):", $tag ) ) {
$tag = preg_replace( ':(?=></script>):', " $attr", $tag, 1 );
}
// Only allow async or defer, not both.
break;
}
return $tag;
}
}
}