Merging PR_218 openai_rev package with new streamlit chat app

venv/lib/python3.9/site-packages/streamlit/elements/utils.py

@@ -0,0 +1,92 @@
+# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import TYPE_CHECKING, Any, Hashable, Optional, Union, cast
+
+import streamlit
+from streamlit import runtime, type_util
+from streamlit.elements.form import is_in_form
+from streamlit.errors import StreamlitAPIException
+from streamlit.proto.LabelVisibilityMessage_pb2 import LabelVisibilityMessage
+from streamlit.runtime.state import WidgetCallback, get_session_state
+
+if TYPE_CHECKING:
+    from streamlit.delta_generator import DeltaGenerator
+    from streamlit.type_util import DataFrameCompatible
+
+
+def last_index_for_melted_dataframes(
+    data: Union["DataFrameCompatible", Any]
+) -> Optional[Hashable]:
+    if type_util.is_dataframe_compatible(data):
+        data = type_util.convert_anything_to_df(data)
+
+        if data.index.size > 0:
+            return cast(Hashable, data.index[-1])
+
+    return None
+
+
+def check_callback_rules(
+    dg: "DeltaGenerator", on_change: Optional[WidgetCallback]
+) -> None:
+    if runtime.exists() and is_in_form(dg) and on_change is not None:
+        raise StreamlitAPIException(
+            "With forms, callbacks can only be defined on the `st.form_submit_button`."
+            " Defining callbacks on other widgets inside a form is not allowed."
+        )
+
+
+_shown_default_value_warning: bool = False
+
+
+def check_session_state_rules(
+    default_value: Any, key: Optional[str], writes_allowed: bool = True
+) -> None:
+    global _shown_default_value_warning
+
+    if key is None or not runtime.exists():
+        return
+
+    session_state = get_session_state()
+    if not session_state.is_new_state_value(key):
+        return
+
+    if not writes_allowed:
+        raise StreamlitAPIException(
+            "Values for st.button, st.download_button, st.file_uploader, and "
+            "st.form cannot be set using st.session_state."
+        )
+
+    if default_value is not None and not _shown_default_value_warning:
+        streamlit.warning(
+            f'The widget with key "{key}" was created with a default value but'
+            " also had its value set via the Session State API."
+        )
+        _shown_default_value_warning = True
+
+
+def get_label_visibility_proto_value(
+    label_visibility_string: type_util.LabelVisibility,
+) -> "LabelVisibilityMessage.LabelVisibilityOptions.ValueType":
+    """Returns one of LabelVisibilityMessage enum constants.py based on string value."""
+
+    if label_visibility_string == "visible":
+        return LabelVisibilityMessage.LabelVisibilityOptions.VISIBLE
+    elif label_visibility_string == "hidden":
+        return LabelVisibilityMessage.LabelVisibilityOptions.HIDDEN
+    elif label_visibility_string == "collapsed":
+        return LabelVisibilityMessage.LabelVisibilityOptions.COLLAPSED
+
+    raise ValueError(f"Unknown label visibility value: {label_visibility_string}")