base_path = ABSPATH;
$this->base_url = trailingslashit( get_site_url() );
$this->default_critical_path = trailingslashit( WP_CONTENT_DIR ) . 'cache/awpp/critical/';
if ( is_multisite() ) {
$this->default_critical_path = trailingslashit( WP_CONTENT_DIR ) . 'cache/awpp/critical/' . get_current_blog_id() . '/';
}
if ( ! file_exists( $this->default_critical_path ) ) {
mkdir( $this->default_critical_path, 0777, true );
}
}
public function run() {
add_action( 'awpp_settings', [ $this, 'register_settings' ] );
add_filter( 'awpp_sanitize_criticalcss', [ $this, 'minify_criticalcss' ] );
add_action( 'admin_bar_menu', [ $this, 'add_toolbar_item' ] );
if ( awpp_is_frontend() ) {
add_action( 'wp_head', [ $this, 'add_critical_css' ], 1 );
}
}
public function register_settings() {
$section = awpp_settings()->add_section( awpp_settings_page_assets(), 'ccss', __( 'Above the fold CSS', 'awpp' ) );
if ( ! defined( 'AWPP_CRITICALAPI' ) || ! AWPP_CRITICALAPI ) {
if ( ! awpp_get_setting( 'deliverycss' ) ) {
$content = '' . __( 'Please enable "Optimize CSS Delivery". With a normal css delivery, this option is not necessary.', 'awpp' ) . '
';
awpp_settings()->add_message( $section, 'ccssmessage', __( 'Critical CSS', 'awpp' ), $content );
} else {
$path = apply_filters( 'awpp_critical_dir', $this->default_critical_path );
if ( $this->default_critical_path != $path ) {
$content = '';
// translators: Custom critical directory found: code
$content .= '' . sprintf( __( 'Custom critical directory found: %s', 'awpp' ), '' . $path . '' ) . '
';
if ( ! is_dir( $path ) ) {
$content .= '' . __( 'Folder does not exist!', 'awpp' ) . '
';
}
if ( ! is_file( $path . 'index.css' ) ) {
$content .= '' . __( 'index.css does not exist!', 'awpp' ) . '
';
}
awpp_settings()->add_message( $section, 'ccssmessage', __( 'Critical CSS', 'awpp' ), $content );
} else {
$file = $this->default_critical_path . 'index.css';
if ( ! file_exists( $file ) ) {
fopen( $file, 'w' );
}
$file_url = str_replace( $this->base_path, $this->base_url, $file );
$val = file_get_contents( $file );
$args['after_field'] = "File: $file_url
";
awpp_settings()->add_textarea( $section, 'criticalcss', __( 'Critical CSS', 'awpp' ), $val, $args );
}
} // End if().
} // End if().
}
public function minify_criticalcss( $css ) {
$path = plugin_dir_path( awpp_get_instance()->file ) . 'Classes/Libs';
require_once $path . '/minify/autoload.php';
require_once $path . '/path-converter/autoload.php';
$minifier = new \MatthiasMullie\Minify\CSS( $css );
$minifier->minify( $this->default_critical_path . 'index.css' );
return $minifier->minify();
}
/**
* Toolbar
*/
public function add_toolbar_item( $wp_admin_bar ) {
$html = '';
$html .= '';
$html .= '';
$args = [
'id' => awpp_get_instance()->Init->admin_bar_id . '-criticalcss',
'parent' => awpp_get_instance()->Init->admin_bar_id,
'title' => __( 'Critical CSS', 'awpp' ),
'href' => '',
'meta' => [
'class' => awpp_get_instance()->prefix . '-adminbar-criticalcss ' . ( awpp_get_setting( 'deliverycss' ) ? '' : 'disabled' ),
],
];
if ( awpp_is_frontend() && awpp_get_setting( 'deliverycss' ) ) {
$args['meta']['html'] = '' . $html . '
';
}
$wp_admin_bar->add_node( $args );
}
/**
* Header Output
*/
public function add_critical_css() {
if ( ! awpp_get_setting( 'deliverycss' ) ) {
return;
}
$path = apply_filters( 'awpp_critical_dir', $this->default_critical_path );
$critical_id = '';
$ids = array_reverse( awpp_get_critical_keys() );
foreach ( $ids as $id ) {
if ( file_exists( $path . $id . '.css' ) ) {
$critical_id = $id;
break;
}
}
$content = '';
$content .= "/*\n";
$content .= "Critical CSS: set by Advanced WP Performance.\n";
$ccss_path = $path . $critical_id . '.css';
$ccss_url = str_replace( trailingslashit( ABSPATH ), trailingslashit( get_site_url() ), $ccss_path );
if ( is_user_logged_in() ) {
$content .= "\nDebug Information (for logged in users):\n";
$content .= "- Critical ID: $critical_id\n";
$content .= "- File: $ccss_url\n";
if ( ! file_exists( $ccss_path ) ) {
$content .= "\nError: File does not exist!\n";
}
}
if ( '' == $critical_id ) {
$content .= "\nError: Critical CSS File not found!\n";
$content .= "*/\n";
} else {
$content .= "*/\n";
if ( file_exists( $ccss_path ) ) {
$content .= file_get_contents( $ccss_path );
}
}
echo "\n";
}
}