@tool
extends Tree

var previous_selected : TreeItem = null

func _get_drag_data(at_position: Vector2) -> Variant:
	var item := get_item_at_position(at_position)
	if item.get_metadata(0) and typeof(item.get_metadata(0)) == TYPE_STRING and item.get_metadata(0).begins_with("res://"):
		return {"files":[item.get_metadata(0)]}
	return null