fix: stabilize controller menu navigation

ui/file_dialog_controller.gd

@@ -0,0 +1,128 @@
+class_name FileDialogController
+extends Node
+
+const FileDialogControllerNavigationType = preload(
+	"res://ui/file_dialog_controller_navigation.gd"
+)
+
+var _text_entry_request: Callable
+var _text_entry_is_open: Callable
+var _tracked_dialogs: Dictionary[int, WeakRef] = {}
+
+
+func setup_text_entry(
+	request: Callable,
+	is_open: Callable = Callable(),
+) -> void:
+	_text_entry_request = request
+	_text_entry_is_open = is_open
+
+
+func track_dialog(dialog: FileDialog) -> void:
+	if dialog != null:
+		_tracked_dialogs[dialog.get_instance_id()] = weakref(dialog)
+
+
+func _process(_delta: float) -> void:
+	if _text_entry_is_active():
+		return
+	for instance_id: int in _tracked_dialogs.keys():
+		var reference: WeakRef = _tracked_dialogs[instance_id]
+		var dialog := reference.get_ref() as FileDialog
+		if dialog == null or not is_instance_valid(dialog):
+			_tracked_dialogs.erase(instance_id)
+			continue
+		if not dialog.visible:
+			continue
+		FileDialogControllerNavigationType.configure(dialog)
+		_connect_text_controls(dialog)
+
+
+func _input(event: InputEvent) -> void:
+	if _text_entry_is_active():
+		return
+	if not (event is InputEventJoypadButton or event is InputEventJoypadMotion):
+		return
+	var scope: Window = _active_scope()
+	if scope == null:
+		return
+	var focused: Control = scope.gui_get_focus_owner()
+	if focused == null:
+		return
+	var direction: Vector2 = _controller_direction(event)
+	var item_list := focused as ItemList
+	if (
+		item_list != null
+		and direction != Vector2.ZERO
+		and FileDialogControllerNavigationType.move_from_item_list(
+			item_list, direction
+		)
+	):
+		get_viewport().set_input_as_handled()
+		return
+	var button_event := event as InputEventJoypadButton
+	if (
+		button_event != null
+		and button_event.pressed
+		and event.is_action_pressed(&"ui_accept")
+		and (focused is LineEdit or focused is TextEdit)
+		and _text_entry_request.is_valid()
+		and bool(_text_entry_request.call(focused))
+	):
+		get_viewport().set_input_as_handled()
+
+
+func _active_scope() -> Window:
+	for reference_value: WeakRef in _tracked_dialogs.values():
+		var dialog := reference_value.get_ref() as FileDialog
+		if dialog == null or not is_instance_valid(dialog) or not dialog.visible:
+			continue
+		return FileDialogControllerNavigationType.active_scope(dialog)
+	return null
+
+
+func _controller_direction(event: InputEvent) -> Vector2:
+	if event.is_action_pressed(&"ui_up"):
+		return Vector2.UP
+	if event.is_action_pressed(&"ui_down"):
+		return Vector2.DOWN
+	if event.is_action_pressed(&"ui_left"):
+		return Vector2.LEFT
+	if event.is_action_pressed(&"ui_right"):
+		return Vector2.RIGHT
+	return Vector2.ZERO
+
+
+func _connect_text_controls(dialog: FileDialog) -> void:
+	var scope: Window = FileDialogControllerNavigationType.active_scope(dialog)
+	for control: Control in (
+		FileDialogControllerNavigationType.interactive_controls(scope)
+	):
+		if not (control is LineEdit or control is TextEdit):
+			continue
+		var callback := _on_text_gui_input.bind(control)
+		if not control.gui_input.is_connected(callback):
+			control.gui_input.connect(callback)
+
+
+func _on_text_gui_input(event: InputEvent, control: Control) -> void:
+	var button_event := event as InputEventJoypadButton
+	if (
+		button_event == null
+		or not button_event.pressed
+		or (
+			button_event.button_index != JOY_BUTTON_A
+			and not event.is_action_pressed(&"ui_accept")
+		)
+		or not _text_entry_request.is_valid()
+	):
+		return
+	if bool(_text_entry_request.call(control)):
+		control.accept_event()
+
+
+func _text_entry_is_active() -> bool:
+	return (
+		_text_entry_is_open.is_valid()
+		and bool(_text_entry_is_open.call())
+	)