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<?php
/**
* Handles backward compatibility of assets for older versions of WP.
*
* @since 2.0
*
* @package AmpProject\AmpWP
*/
namespace AmpProject\AmpWP\Admin;
use AmpProject\AmpWP\Infrastructure\Delayed;
use AmpProject\AmpWP\Infrastructure\Registerable;
use AmpProject\AmpWP\Infrastructure\Service;
use WP_Scripts;
use WP_Styles;
/**
* Registers assets that may not be available in the current site's version of core.
*
* @since 2.0
* @internal
*/
final class Polyfills implements Delayed, Service, Registerable {
/**
* Get the action to use for registering the service.
*
* @return string Registration action to use.
*/
public static function get_registration_action() {
return 'amp_register_polyfills';
}
/**
* Runs on instantiation.
*/
public function register() {
$this->register_shimmed_scripts( wp_scripts() );
$this->register_shimmed_styles( wp_styles() );
}
/**
* Registers scripts not guaranteed to be available in core.
*
* @param WP_Scripts $wp_scripts The WP_Scripts instance for the current page.
*/
public function register_shimmed_scripts( $wp_scripts ) {
if ( ! isset( $wp_scripts->registered['lodash'] ) ) {
$wp_scripts->add(
'lodash',
amp_get_asset_url( 'js/vendor/lodash.js' ),
[],
'4.17.19',
true
);
$wp_scripts->add_inline_script( 'lodash', 'window.lodash = _.noConflict();' );
}
/*
* Polyfill dependencies that are registered in Gutenberg and WordPress 5.0.
* Note that Gutenberg will override these at wp_enqueue_scripts if it is active.
*/
$handles = [ 'wp-i18n', 'wp-dom-ready', 'wp-polyfill', 'wp-url' ];
foreach ( $handles as $handle ) {
if ( ! isset( $wp_scripts->registered[ $handle ] ) ) {
$asset_file = AMP__DIR__ . "/assets/js/{$handle}.asset.php";
$asset = require $asset_file;
$dependencies = $asset['dependencies'];
$version = $asset['version'];
$wp_scripts->add(
$handle,
amp_get_asset_url( "js/{$handle}.js" ),
$dependencies,
$version
);
}
}
if ( ! isset( $wp_scripts->registered['wp-api-fetch'] ) ) {
$asset_handle = 'wp-api-fetch';
$asset_file = AMP__DIR__ . "/assets/js/{$asset_handle}.asset.php";
$asset = require $asset_file;
$version = $asset['version'];
$wp_scripts->add(
$asset_handle,
amp_get_asset_url( "js/{$asset_handle}.js" ),
[],
$version,
true
);
$wp_scripts->add_inline_script(
$asset_handle,
sprintf(
'wp.apiFetch.use( wp.apiFetch.createRootURLMiddleware( "%s" ) );',
esc_url_raw( get_rest_url() )
),
'after'
);
$wp_scripts->add_inline_script(
$asset_handle,
implode(
"\n",
[
sprintf(
'wp.apiFetch.nonceMiddleware = wp.apiFetch.createNonceMiddleware( "%s" );',
( wp_installing() && ! is_multisite() ) ? '' : wp_create_nonce( 'wp_rest' )
),
'wp.apiFetch.use( wp.apiFetch.nonceMiddleware );',
'wp.apiFetch.use( wp.apiFetch.mediaUploadMiddleware );',
sprintf(
'wp.apiFetch.nonceEndpoint = "%s";',
admin_url( 'admin-ajax.php?action=rest-nonce' )
),
]
),
'after'
);
}
}
/**
* Registers shimmed assets not guaranteed to be available in core.
*
* @param WP_Styles $wp_styles The WP_Styles instance for the current page.
*/
public function register_shimmed_styles( $wp_styles ) {
if ( version_compare( get_bloginfo( 'version' ), '5.4', '<' ) ) {
$wp_styles->remove( 'wp-components' );
}
if ( ! isset( $wp_styles->registered['wp-components'] ) ) {
$wp_styles->add(
'wp-components',
amp_get_asset_url( 'css/wp-components.css' ),
[],
'10.0.2'
);
}
}
}
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