message loop BP

<p><a href="<?php bp_message_thread_view_link(); ?>" title="<?php _e( "View Message", "buddypress" ); ?>"><?php if (bp_get_message_thread_subject() == ' ') {if ( 'sentbox' != bp_current_action() ) bp_message_thread_from(); else bp_message_thread_to();  } else { bp_message_thread_subject();} ?></a></p>