131 lines
2.7 KiB
PHP
131 lines
2.7 KiB
PHP
<?php
|
|
|
|
namespace WP_Rocket\Engine\Optimization\DelayJS;
|
|
|
|
use WP_Rocket\Event_Management\Subscriber_Interface;
|
|
|
|
class Subscriber implements Subscriber_Interface {
|
|
|
|
/**
|
|
* HTML instance.
|
|
*
|
|
* @since 3.7
|
|
*
|
|
* @var HTML
|
|
*/
|
|
private $html;
|
|
|
|
/**
|
|
* WP_Filesystem_Direct instance.
|
|
*
|
|
* @since 3.7
|
|
*
|
|
* @var \WP_Filesystem_Direct
|
|
*/
|
|
private $filesystem;
|
|
|
|
/**
|
|
* Script enqueued status.
|
|
*
|
|
* @since 3.7
|
|
* @var bool
|
|
*/
|
|
private $is_enqueued = false;
|
|
|
|
/**
|
|
* Subscriber constructor.
|
|
*
|
|
* @param HTML $html HTML Instance.
|
|
* @param \WP_Filesystem_Direct $filesystem The Filesystem object.
|
|
*/
|
|
public function __construct( HTML $html, $filesystem ) {
|
|
$this->html = $html;
|
|
$this->filesystem = $filesystem;
|
|
}
|
|
|
|
/**
|
|
* Return an array of events that this subscriber wants to listen to.
|
|
*
|
|
* @since 3.7
|
|
*
|
|
* @return array
|
|
*/
|
|
public static function get_subscribed_events() {
|
|
return [
|
|
'rocket_buffer' => [
|
|
[ 'delay_js', 21 ],
|
|
],
|
|
'wp_enqueue_scripts' => 'add_delay_js_script',
|
|
];
|
|
}
|
|
|
|
/**
|
|
* Using html buffer get scripts to be delayed and adjust their html.
|
|
*
|
|
* @param string $buffer_html Html for the page.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function delay_js( $buffer_html ) {
|
|
return $this->html->delay_js( $buffer_html );
|
|
}
|
|
|
|
/**
|
|
* Adds the inline script to the footer when the option is enabled.
|
|
*
|
|
* @since 3.7
|
|
*
|
|
* @return void
|
|
*/
|
|
public function add_delay_js_script() {
|
|
if ( $this->is_enqueued ) {
|
|
return;
|
|
}
|
|
if ( ! $this->html->is_allowed() ) {
|
|
return;
|
|
}
|
|
|
|
$js_assets_path = rocket_get_constant( 'WP_ROCKET_PATH' ) . 'assets/js/';
|
|
|
|
if ( ! wp_script_is( 'rocket-browser-checker' ) ) {
|
|
$checker_filename = rocket_get_constant( 'SCRIPT_DEBUG' ) ? 'browser-checker.js' : 'browser-checker.min.js';
|
|
|
|
// phpcs:ignore WordPress.WP.EnqueuedResourceParameters.NoExplicitVersion
|
|
wp_register_script(
|
|
'rocket-browser-checker',
|
|
'',
|
|
[],
|
|
'',
|
|
true
|
|
);
|
|
wp_enqueue_script( 'rocket-browser-checker' );
|
|
wp_add_inline_script(
|
|
'rocket-browser-checker',
|
|
$this->filesystem->get_contents( "{$js_assets_path}{$checker_filename}" )
|
|
);
|
|
}
|
|
|
|
// Register handle with no src to add the inline script after.
|
|
// phpcs:ignore WordPress.WP.EnqueuedResourceParameters.NoExplicitVersion
|
|
wp_register_script(
|
|
'rocket-delay-js',
|
|
'',
|
|
[
|
|
'rocket-browser-checker',
|
|
],
|
|
'',
|
|
true
|
|
);
|
|
wp_enqueue_script( 'rocket-delay-js' );
|
|
|
|
$script_filename = rocket_get_constant( 'SCRIPT_DEBUG' ) ? 'lazyload-scripts.js' : 'lazyload-scripts.min.js';
|
|
|
|
wp_add_inline_script(
|
|
'rocket-delay-js',
|
|
$this->filesystem->get_contents( "{$js_assets_path}{$script_filename}" )
|
|
);
|
|
|
|
$this->is_enqueued = true;
|
|
}
|
|
}
|