critical_css = $critical_css;
$this->options = $options;
}
/**
* Return an array of events that this subscriber wants to listen to.
*
* @since 3.3
* @author Remy Perona
*
* @return array
*/
public static function get_subscribed_events() {
$slug = rocket_get_constant( 'WP_ROCKET_SLUG' );
return [
'admin_post_rocket_generate_critical_css' => 'init_critical_css_generation',
'update_option_' . $slug => [
[ 'generate_critical_css_on_activation', 11, 2 ],
[ 'stop_process_on_deactivation', 11, 2 ],
],
'admin_notices' => [
[ 'notice_critical_css_generation_triggered' ],
[ 'critical_css_generation_running_notice' ],
[ 'critical_css_generation_complete_notice' ],
[ 'warning_critical_css_dir_permissions' ],
],
'wp_head' => [ 'insert_load_css', PHP_INT_MAX ],
'rocket_buffer' => [
[ 'insert_critical_css_buffer', 19 ],
[ 'async_css', 32 ],
],
'switch_theme' => 'maybe_regenerate_cpcss',
'rocket_critical_css_generation_process_complete' => 'clean_domain_on_complete',
];
}
/**
* This notice is displayed when the Critical CSS Generation is triggered from a different page than WP Rocket settings page
*
* @since 3.4.1
* @author Soponar Cristina
*/
public function notice_critical_css_generation_triggered() {
if ( ! current_user_can( 'rocket_regenerate_critical_css' ) ) {
return;
}
$screen = get_current_screen();
if ( 'settings_page_wprocket' === $screen->id ) {
return;
}
if ( false === get_transient( 'rocket_critical_css_generation_triggered' ) ) {
return;
}
delete_transient( 'rocket_critical_css_generation_triggered' );
$message = __( 'Critical CSS generation is currently running.', 'rocket' );
if ( current_user_can( 'rocket_manage_options' ) ) {
$message .= ' ' . sprintf(
// Translators: %1$s = opening link tag, %2$s = closing link tag.
__( 'Go to the %1$sWP Rocket settings%2$s page to track progress.', 'rocket' ),
'',
''
);
}
\rocket_notice_html(
[
'status' => 'info',
'message' => $message,
]
);
}
/**
* Launches the critical CSS generation from admin
*
* @since 2.11
* @author Remy Perona
*
* @see process_handler()
*/
public function init_critical_css_generation() {
if ( ! isset( $_GET['_wpnonce'] ) || ! wp_verify_nonce( sanitize_key( $_GET['_wpnonce'] ), 'rocket_generate_critical_css' ) ) {
wp_nonce_ays( '' );
}
$this->critical_css->process_handler();
if ( ! strpos( wp_get_referer(), 'wprocket' ) ) {
set_transient( 'rocket_critical_css_generation_triggered', 1 );
}
wp_safe_redirect( esc_url_raw( wp_get_referer() ) );
die();
}
/**
* Launches the critical CSS generation when activating the async CSS option
*
* @since 2.11
* @author Remy Perona
*
* @see Critical_CSS::process_handler()
*
* @param array $old_value Previous values for WP Rocket settings.
* @param array $value New values for WP Rocket settings.
*/
public function generate_critical_css_on_activation( $old_value, $value ) {
if ( ! isset( $old_value['async_css'], $value['async_css'] ) || ( $old_value['async_css'] === $value['async_css'] ) || 1 !== (int) $value['async_css'] ) {
return;
}
$critical_css_path = $this->critical_css->get_critical_css_path();
// Check if the CPCSS path exists and create it.
if ( ! rocket_direct_filesystem()->is_dir( $critical_css_path ) ) {
rocket_mkdir_p( $critical_css_path );
}
try {
if ( ( new FilesystemIterator( $critical_css_path, FilesystemIterator::SKIP_DOTS ) )->valid() ) {
// Bail out if the folder is not empty.
return;
}
} catch ( UnexpectedValueException $e ) {
// Bail out when folder is invalid.
return;
}
// Generate the CPCSS files.
$this->critical_css->process_handler();
}
/**
* Stops the critical CSS generation when deactivating the async CSS option and remove the notices
*
* @since 2.11
* @author Remy Perona
*
* @param array $old_value Previous values for WP Rocket settings.
* @param array $value New values for WP Rocket settings.
*/
public function stop_process_on_deactivation( $old_value, $value ) {
// phpcs:ignore WordPress.Security.NonceVerification.Missing
if ( ! empty( $_POST[ WP_ROCKET_SLUG ] ) && isset( $old_value['async_css'], $value['async_css'] ) && ( $old_value['async_css'] !== $value['async_css'] ) && 0 === (int) $value['async_css'] ) {
$this->critical_css->stop_generation();
delete_transient( 'rocket_critical_css_generation_process_running' );
delete_transient( 'rocket_critical_css_generation_process_complete' );
}
}
/**
* This notice is displayed when the critical CSS generation is running
*
* @since 2.11
* @author Remy Perona
*/
public function critical_css_generation_running_notice() {
if ( ! current_user_can( 'rocket_regenerate_critical_css' ) ) {
return;
}
$screen = get_current_screen();
if ( 'settings_page_wprocket' !== $screen->id ) {
return;
}
$transient = get_transient( 'rocket_critical_css_generation_process_running' );
if ( ! $transient ) {
return;
}
// Translators: %1$d = number of critical CSS generated, %2$d = total number of critical CSS to generate.
$message = '' . sprintf( __( 'Critical CSS generation is currently running: %1$d of %2$d page types completed. (Refresh this page to view progress)', 'rocket' ), $transient['generated'], $transient['total'] ) . '
';
if ( ! empty( $transient['items'] ) ) {
$message .= '';
foreach ( $transient['items'] as $item ) {
$message .= '- ' . $item . '
';
}
$message .= '
';
}
rocket_notice_html(
[
'status' => 'info',
'message' => $message,
]
);
}
/**
* This notice is displayed when the critical CSS generation is complete
*
* @since 2.11
* @author Remy Perona
*/
public function critical_css_generation_complete_notice() {
if ( ! current_user_can( 'rocket_regenerate_critical_css' ) ) {
return;
}
$screen = get_current_screen();
if ( 'settings_page_wprocket' !== $screen->id ) {
return;
}
$transient = get_transient( 'rocket_critical_css_generation_process_complete' );
if ( ! $transient ) {
return;
}
$status = 'success';
if ( 0 === $transient['generated'] ) {
$status = 'error';
} elseif ( $transient['generated'] < $transient['total'] ) {
$status = 'warning';
}
// Translators: %1$d = number of critical CSS generated, %2$d = total number of critical CSS to generate.
$message = '' . sprintf( __( 'Critical CSS generation finished for %1$d of %2$d page types.', 'rocket' ), $transient['generated'], $transient['total'] );
$message .= ' (' . date_i18n( get_option( 'date_format' ) ) . ' @ ' . date_i18n( get_option( 'time_format' ) ) . ')
';
if ( ! empty( $transient['items'] ) ) {
$message .= '';
foreach ( $transient['items'] as $item ) {
$message .= '- ' . $item . '
';
}
$message .= '
';
}
if ( 'error' === $status || 'warning' === $status ) {
$message .= '' . __( 'Critical CSS generation encountered one or more errors.', 'rocket' ) . ' ' . __( 'Learn more.', 'rocket' ) . '';
}
rocket_notice_html(
[
'status' => $status,
'message' => $message,
]
);
delete_transient( 'rocket_critical_css_generation_process_complete' );
}
/**
* This warning is displayed when the critical CSS dir isn't writeable
*
* @since 2.11
* @author Remy Perona
*/
public function warning_critical_css_dir_permissions() {
if ( current_user_can( 'rocket_manage_options' )
&& ( ! rocket_direct_filesystem()->is_writable( WP_ROCKET_CRITICAL_CSS_PATH ) )
&& ( $this->options->get( 'async_css', false ) )
&& rocket_valid_key() ) {
$boxes = get_user_meta( get_current_user_id(), 'rocket_boxes', true );
if ( in_array( __FUNCTION__, (array) $boxes, true ) ) {
return;
}
$message = rocket_notice_writing_permissions( trim( str_replace( ABSPATH, '', WP_ROCKET_CRITICAL_CSS_PATH ), '/' ) );
rocket_notice_html(
[
'status' => 'error',
'dismissible' => '',
'message' => $message,
]
);
}
}
/**
* Insert loadCSS script in
*
* @since 2.11.2 Updated loadCSS rel=preload polyfill to version 2.0.1
* @since 2.10
* @author Remy Perona
*/
public function insert_load_css() {
global $pagenow;
if ( ! $this->options->get( 'async_css' ) ) {
return;
}
if ( is_rocket_post_excluded_option( 'async_css' ) ) {
return;
}
if ( ! $this->critical_css->get_current_page_critical_css() ) {
return;
}
// Don't apply on wp-login.php/wp-register.php.
if ( 'wp-login.php' === $pagenow || 'wp-register.php' === $pagenow ) {
return;
}
if ( ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) || ( defined( 'DONOTASYNCCSS' ) && DONOTASYNCCSS ) ) {
return;
}
// Don't apply if user is logged-in and cache for logged-in user is off.
if ( is_user_logged_in() && ! $this->options->get( 'cache_logged_user' ) ) {
return;
}
// This filter is documented in inc/front/process.php.
$rocket_cache_search = apply_filters( 'rocket_cache_search', false );
// Don't apply on search page.
if ( is_search() && ! $rocket_cache_search ) {
return;
}
// Don't apply on excluded pages.
if ( ! isset( $_SERVER['REQUEST_URI'] ) || in_array( wp_unslash( $_SERVER['REQUEST_URI'] ), $this->options->get( 'cache_reject_uri', [] ), true ) ) {
return;
}
// Don't apply on 404 page.
if ( is_404() ) {
return;
}
echo /* phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Dynamic content is properly escaped in the view. */<<
/*! loadCSS rel=preload polyfill. [c]2017 Filament Group, Inc. MIT License */
(function(w){"use strict";if(!w.loadCSS){w.loadCSS=function(){}}
var rp=loadCSS.relpreload={};rp.support=(function(){var ret;try{ret=w.document.createElement("link").relList.supports("preload")}catch(e){ret=!1}
return function(){return ret}})();rp.bindMediaToggle=function(link){var finalMedia=link.media||"all";function enableStylesheet(){link.media=finalMedia}
if(link.addEventListener){link.addEventListener("load",enableStylesheet)}else if(link.attachEvent){link.attachEvent("onload",enableStylesheet)}
setTimeout(function(){link.rel="stylesheet";link.media="only x"});setTimeout(enableStylesheet,3000)};rp.poly=function(){if(rp.support()){return}
var links=w.document.getElementsByTagName("link");for(var i=0;i
JS;
}
/**
* Insert critical CSS before combined CSS when option is active
*
* @since 2.11.5
* @author Remy Perona
*
* @param string $buffer HTML output of the page.
* @return string Updated HTML output
*/
public function insert_critical_css_buffer( $buffer ) {
if ( ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) || ( defined( 'DONOTASYNCCSS' ) && DONOTASYNCCSS ) ) {
return;
}
if ( ! $this->options->get( 'async_css' ) ) {
return $buffer;
}
if ( is_rocket_post_excluded_option( 'async_css' ) ) {
return $buffer;
}
$current_page_cpcss = $this->critical_css->get_current_page_critical_css();
if ( ! $current_page_cpcss ) {
return $buffer;
}
if ( 'fallback' === $current_page_cpcss ) {
$critical_css_content = $this->options->get( 'critical_css', '' );
} else {
$critical_css_content = rocket_direct_filesystem()->get_contents( $current_page_cpcss );
}
if ( ! $critical_css_content ) {
return $buffer;
}
$critical_css_content = str_replace( '\\', '\\\\', $critical_css_content );
$buffer = preg_replace( '##iU', '', $buffer, 1 );
return $buffer;
}
/**
* Defer loading of CSS files
*
* @since 2.10
* @author Remy Perona
*
* @param string $buffer HTML code.
* @return string Updated HTML code
*/
public function async_css( $buffer ) {
if ( ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) || ( defined( 'DONOTASYNCCSS' ) && DONOTASYNCCSS ) ) {
return;
}
if ( ! $this->options->get( 'async_css' ) ) {
return $buffer;
}
if ( is_rocket_post_excluded_option( 'async_css' ) ) {
return $buffer;
}
if ( ! $this->critical_css->get_current_page_critical_css() ) {
return $buffer;
}
$excluded_css = array_flip( get_rocket_exclude_async_css() );
/**
* Filters the pattern used to get all stylesheets in the HTML
*
* @since 2.10
* @author Remy Perona
*
* @param string $css_pattern Regex pattern to get all stylesheets in the HTML.
*/
$css_pattern = apply_filters( 'rocket_async_css_regex_pattern', '/(?=]*\s(rel\s*=\s*[\'"]stylesheet["\']))]*\shref\s*=\s*[\'"]([^\'"]+)[\'"](.*)>/iU' );
// Get all css files with this regex.
preg_match_all( $css_pattern, $buffer, $tags_match );
if ( ! isset( $tags_match[0] ) ) {
return $buffer;
}
$noscripts = '';
foreach ( $tags_match[0] as $i => $tag ) {
// Strip query args.
$path = rocket_extract_url_component( $tags_match[2][ $i ], PHP_URL_PATH );
// Check if this file should be deferred.
if ( isset( $excluded_css[ $path ] ) ) {
continue;
}
$preload = str_replace( 'stylesheet', 'preload', $tags_match[1][ $i ] );
$onload = preg_replace( '~' . preg_quote( $tags_match[3][ $i ], '~' ) . '~iU', ' as="style" onload=""' . $tags_match[3][ $i ] . '>', $tags_match[3][ $i ] );
$tag = str_replace( $tags_match[3][ $i ] . '>', $onload, $tag );
$tag = str_replace( $tags_match[1][ $i ], $preload, $tag );
$tag = str_replace( 'onload=""', 'onload="this.onload=null;this.rel=\'stylesheet\'"', $tag );
$buffer = str_replace( $tags_match[0][ $i ], $tag, $buffer );
$noscripts .= '';
}
$buffer = str_replace( '', $noscripts . ' ', $buffer );
return $buffer;
}
/**
* Regenerates the CPCSS when switching theme if the potion is active
*
* @since 3.3
* @author Remy Perona
* @return void
*/
public function maybe_regenerate_cpcss() {
if ( ! $this->options->get( 'async_css' ) ) {
return;
}
$this->critical_css->process_handler();
}
/**
* Cleans the cache when the generation is complete
*
* @since 3.3
* @author Remy Perona
* @return void
*/
public function clean_domain_on_complete() {
\rocket_clean_domain();
}
}