56 lines
1.9 KiB
Python
56 lines
1.9 KiB
Python
# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from typing import Iterator, Mapping, NoReturn, Optional
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from streamlit.errors import StreamlitAPIException
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from streamlit.runtime.scriptrunner import get_script_run_ctx as _get_script_run_ctx
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from streamlit.runtime.scriptrunner.script_run_context import UserInfo
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def _get_user_info() -> UserInfo:
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ctx = _get_script_run_ctx()
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if ctx is None:
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# TODO: Add appropriate warnings when ctx is missing
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return {}
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return ctx.user_info
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class UserInfoProxy(Mapping[str, Optional[str]]):
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"""A dict like proxy object for accessing information about current user."""
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def __getitem__(self, key: str) -> Optional[str]:
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return _get_user_info()[key]
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def __getattr__(self, key: str) -> Optional[str]:
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try:
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return _get_user_info()[key]
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except KeyError:
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raise AttributeError
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def __setattr__(self, name: str, value: Optional[str]) -> NoReturn:
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raise StreamlitAPIException("st.experimental_user cannot be modified")
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def __setitem__(self, name: str, value: Optional[str]) -> NoReturn:
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raise StreamlitAPIException("st.experimental_user cannot be modified")
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def __iter__(self) -> Iterator[str]:
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return iter(_get_user_info())
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def __len__(self) -> int:
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return len(_get_user_info())
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def to_dict(self) -> UserInfo:
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return _get_user_info()
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