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import logging
from typing import Any, Callable
from typing_extensions import Self
from webview.dom.element import Element
logger = logging.getLogger(__file__)
class DOMEvent:
def __init__(self, event, element: Element) -> None:
self.event = event
self.__element = element
self._items: list[Callable[..., Any]] = []
def __add__(self, item: Callable[..., Any]) -> Self:
self._items.append(item)
self.__element.on(self.event, item)
return self
def __sub__(self, item: Callable[..., Any]) -> Self:
self._items.remove(item)
self.__element.off(self.event, item)
return self
def __iadd__(self, item: Callable[..., Any]) -> Self:
self._items.append(item)
self.__element.on(self.event, item)
return self
def __isub__(self, item: Callable[..., Any]) -> Self:
if item in self._items:
self._items.remove(item)
self.__element.off(self.event, item)
else:
logger.warning(f'Event handler {item} not found')
return self
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