WP_Customize_Manager::customize_preview_init()

Source

public function customize_preview_init() {	/* * Now that Customizer previews are loaded into iframes via GET requests * and natural URLs with transaction UUIDs added, we need to ensure that * the responses are never cached by proxies. In practice, this will not * be needed if the user is logged-in anyway. But if anonymous access is * allowed then the auth cookies would not be sent and WordPress would * not send no-cache headers by default. */	if ( ! headers_sent() ) {	nocache_headers();	header( 'X-Robots: noindex, nofollow, noarchive' );	header( 'X-Robots-Tag: noindex, nofollow, noarchive' );	}	add_filter( 'wp_robots', 'wp_robots_no_robots' );	add_filter( 'wp_headers', array( $this, 'filter_iframe_security_headers' ) );	/* * If preview is being served inside the customizer preview iframe, and * if the user doesn't have customize capability, then it is assumed * that the user's session has expired and they need to re-authenticate. */	if ( $this->messenger_channel && ! current_user_can( 'customize' ) ) {	$this->wp_die(	-1,	sprintf(	/* translators: %s: customize_messenger_channel */	__( 'Unauthorized. You may remove the %s param to preview as frontend.' ),	'<code>customize_messenger_channel<code>'	)	);	return;	}	$this->prepare_controls();	add_filter( 'wp_redirect', array( $this, 'add_state_query_params' ) );	wp_enqueue_script( 'customize-preview' );	wp_enqueue_style( 'customize-preview' );	add_action( 'wp_head', array( $this, 'customize_preview_loading_style' ) );	add_action( 'wp_head', array( $this, 'remove_frameless_preview_messenger_channel' ) );	add_action( 'wp_footer', array( $this, 'customize_preview_settings' ), 20 );	add_filter( 'get_edit_post_link', '__return_empty_string' );	/** * Fires once the Customizer preview has initialized and JavaScript * settings have been printed. * * @since 3.4.0 * * @param WP_Customize_Manager $manager WP_Customize_Manager instance. */	do_action( 'customize_preview_init', $this ); } 

View all references View on Trac View on GitHub