void (VisibleAreaEvent e) { if (!myScrollable.isSyncScrollEnabled() || isDuringSyncScroll()) return; enterDisableScrollSection(); try { if (e.getEditor() == Side.LEFT.select(myEditors)) { myHelper1.visibleAreaChanged(e); } else if (e.getEditor() == Side.RIGHT.select(myEditors)) { myHelper2.visibleAreaChanged(e); } } finally { exitDisableScrollSection(); } }