extends HBoxContainer

signal selection_changed(selection)

export (ButtonGroup) var group

var _selection = 0

func _ready():
	focus_mode = FOCUS_ALL
	connect("focus_entered", self, "_focused")
	for child in get_children():
		if child is BaseButton:
			child.focus_neighbour_top = "../%s" % focus_neighbour_top
			child.focus_neighbour_bottom = "../%s" % focus_neighbour_bottom
			child.connect("focus_entered", child, "set_pressed", [true])
			child.connect("focus_entered", self, "_button_selected", [], CONNECT_DEFERRED)

func _focused():
	_selection = get_selection()
	group.get_pressed_button().grab_focus()

func _button_selected():
	var new_selection = get_selection()
	if _selection != new_selection:
		_selection = new_selection
		emit_signal("selection_changed", _selection)

func get_selection():
	return group.get_buttons().find(group.get_pressed_button())

func select(selection):
	group.get_buttons()[selection].pressed = true