# A window, root of the `Control` tree
#
# Each window should hold a single control, usually a `CompositeControl`,
# which in turn holds all the displayed controls.
class Window
	super CompositeControl

	# Should the back button be shown and used to go back to a previous window?
	fun enable_back_button: Bool do return app.window_stack.length > 1

	# The back button has been pressed, usually to open the previous window
	fun on_back_button do app.pop_window
end