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Mini Shell
Mini Shell
<?php
namespace WP_Rocket\Engine\Optimization\Minify\CSS;
use WP_Rocket\Event_Management\Subscriber_Interface;
/**
* Minify/Combine CSS Admin subscriber
*
* @since 3.5.4
*/
class AdminSubscriber implements Subscriber_Interface {
/**
* Return an array of events that this subscriber wants to listen to.
*
* @since 3.5.4
*
* @return array
*/
public static function get_subscribed_events() {
$slug = rocket_get_constant( 'WP_ROCKET_SLUG', 'wp_rocket_settings' );
return [
"update_option_{$slug}" => [ 'clean_minify', 10, 2 ],
"pre_update_option_{$slug}" => [ 'regenerate_minify_css_key', 10, 2 ],
];
}
/**
* Clean minify CSS files when options change.
*
* @since 3.5.4
*
* @param array $old An array of previous settings.
* @param array $new An array of submitted settings.
*/
public function clean_minify( $old, $new ) {
if ( ! is_array( $old ) || ! is_array( $new ) ) {
return;
}
if ( ! $this->maybe_minify_regenerate( $new, $old ) ) {
return;
}
// Purge all minify cache files.
rocket_clean_minify( 'css' );
}
/**
* Regenerate the minify key if CSS files have been modified.
*
* @since 3.5.4
*
* @param array $new An array of submitted settings.
* @param array $old An array of previous settings.
*
* @return array Updates 'minify_css_key' setting when regenerated; else, original submitted settings.
*/
public function regenerate_minify_css_key( $new, $old ) {
if ( ! is_array( $old ) || ! is_array( $new ) ) {
return $new;
}
if ( ! $this->maybe_minify_regenerate( $new, $old ) ) {
return $new;
}
$new['minify_css_key'] = create_rocket_uniqid();
return $new;
}
/**
* Checks minify CSS condition when options change.
*
* @since 3.5.4
*
* @param array $new An array of submitted settings.
* @param array $old An array of previous settings.
*
* @return bool true when should regenerate; else false.
*/
protected function maybe_minify_regenerate( array $new, array $old ) {
$settings_to_check = [
'minify_css',
'exclude_css',
'cdn',
];
foreach ( $settings_to_check as $setting ) {
if ( $this->did_setting_change( $setting, $new, $old ) ) {
return true;
}
}
return (
array_key_exists( 'cdn', $new )
&&
1 === (int) $new['cdn']
&&
$this->did_setting_change( 'cdn_cnames', $new, $old )
);
}
/**
* Checks if the given setting's value changed.
*
* @since 3.5.4
*
* @param string $setting The settings's value to check in the old and new values.
* @param array $new An array of submitted settings.
* @param array $old An array of previous settings.
*
* @return bool
*/
protected function did_setting_change( $setting, array $new, array $old ) {
return (
array_key_exists( $setting, $old )
&&
array_key_exists( $setting, $new )
&&
$old[ $setting ] !== $new[ $setting ]
);
}
}
Zerion Mini Shell 1.0