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"""Element abstractions for type comparisons without circular imports
.. versionadded:: 1.2"""
from __future__ import annotations
from abc import ABC, abstractmethod
import sys
from lxml import etree
if sys.version_info >= (3, 8):
from typing import Protocol
else:
from typing_extensions import Protocol
class IBaseElement(ABC, etree.ElementBase):
"""Abstraction for BaseElement to avoid circular imports"""
@abstractmethod
def get_id(self, as_url=0):
"""Returns the element ID. If not set, generates a unique ID."""
raise NotImplementedError
class BaseElementProtocol(Protocol):
"""Abstraction for BaseElement, to be used as typehint in mixin classes"""
def get_id(self, as_url=0) -> str:
"""Returns the element ID. If not set, generates a unique ID."""
@property
def root(self) -> ISVGDocumentElement:
"""Returns the element's root."""
class ISVGDocumentElement(IBaseElement):
"""Abstraction for SVGDocumentElement"""
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