class_name NationManagementScreensEventsObject
extends RefCounted

signal update_active_nation_management_screen(screen : NationManagement.Screen)

var _current_screen : NationManagement.Screen = NationManagement.Screen.NONE

# Set the current nation management screen. This emits an update signal to force
# the argument screen to update, even if it was already the current screen.
# Used by miscellaneous screen opening buttons (e.g. in province overview panel)
# and by the close and toggle functions below.
func open_nation_management_screen(screen : NationManagement.Screen) -> void:
	_current_screen = screen
	update_active_nation_management_screen.emit(_current_screen)

# Close the screen if it is already open. Used for screens' close buttons.
func close_nation_management_screen(screen : NationManagement.Screen) -> void:
	if screen == _current_screen:
		open_nation_management_screen(NationManagement.Screen.NONE)

# Either switch to the screen or close it if it is already open. Used for topbar's buttons.
func toggle_nation_management_screen(screen : NationManagement.Screen) -> void:
	if screen == _current_screen:
		screen = NationManagement.Screen.NONE
	open_nation_management_screen(screen)