show
	unset hidden flag
	update state
hide
	set hidden flag
	update state
enable
	unset disabled flag
	update state
disable
	set disabled flag
	update state
update state
	if shown and all parents shown
		commit show
	else
		commit hide
	if enabled and all parents enabled
		commit enable
	else
		commit disable
	update container stat
update container state, non-containers
	do nothing
update container state, containers
	for all children
		update child state