# This stub provides __getattr__ for type checking, which cannot be in the
# main file because mypyc doesn't support __getattr__ in classes with
# allow_interpreted_subclasses=True.
from collections.abc import Iterator, Mapping
from typing import Any, ClassVar

from psygnal._signal import Signal, SignalInstance

class SignalRelay(SignalInstance):
    instance: Any
    def __init__(
        self, signals: Mapping[str, SignalInstance], instance: Any = None
    ) -> None: ...

class SignalGroup:
    _psygnal_signals: ClassVar[Mapping[str, Signal]]
    _psygnal_uniform: ClassVar[bool]
    _psygnal_name_conflicts: ClassVar[set[str]]
    _psygnal_aliases: ClassVar[dict[str, str | None]]
    _psygnal_instances: dict[str, SignalInstance]

    def __init__(self, instance: Any = None) -> None: ...
    def __init_subclass__(
        cls,
        strict: bool = False,
        signal_aliases: Mapping[str, str | None] = ...,
    ) -> None: ...
    @property
    def instance(self) -> Any: ...
    @property
    def all(self) -> SignalRelay: ...
    @property
    def signals(self) -> Mapping[str, SignalInstance]: ...
    def __len__(self) -> int: ...
    def __getitem__(self, item: str) -> SignalInstance: ...
    def __getattr__(self, name: str) -> SignalInstance: ...
    def __iter__(self) -> Iterator[str]: ...
    def __contains__(self, item: str) -> bool: ...
    def __repr__(self) -> str: ...