Automattic\WooCommerce\Internal\EmailEditor

Integration::get_preview_subject_for_email_type │ private │ WC 1.0

Build the preview subject for an email type, mirroring the post-based preview subject (placeholders resolved against the preview order).

Method of the class: Integration{}

No Hooks.

Returns

string. The preview subject.

Usage

// private - for code of main (parent) class only
$result = $this->get_preview_subject_for_email_type( $email_type, $email ): string;
$email_type(string) (required)
The email type identifier.
$email(WC_Email) (required)
The email instance, used for fallbacks.

Integration::get_preview_subject_for_email_type() code WC 11.1.2

woocommerce/src/Internal/EmailEditor/Integration.php 
private function get_preview_subject_for_email_type( string $email_type, \WC_Email $email ): string {
	$class_name = WCTransactionalEmailPostsManager::get_instance()->get_email_type_class_name_from_email_id( $email_type );
	if ( ! empty( $class_name ) ) {
		try {
			$email_preview = wc_get_container()->get( EmailPreview::class );
			$email_preview->set_email_type( $class_name );
			return $email_preview->get_subject();
		} catch ( \Throwable $e ) {
			// Fall through to the WC_Email fallbacks below.
			unset( $e );
		}
	}

	// Third-party get_subject() implementations may assume send-time state
	// (e.g. Bookings dereferences its booking object), so it must only run
	// guarded; the title is the always-safe last resort.
	try {
		return (string) $email->get_subject();
	} catch ( \Throwable $e ) {
		return (string) $email->get_title();
	}
}