from services.material import MaterialService from .qs_button import QSButton material = MaterialService.get_default() def dark_mode_button() -> QSButton: return QSButton( label="Dark", icon_name="night-light-symbolic", on_activate=lambda x: material.set_dark_mode(True), on_deactivate=lambda x: material.set_dark_mode(False), active=material.bind("dark-mode"), )