fix(dashboard): unselecting all example chips resulted in the first c…

…hip being selected

dev_utils/dashboard_app/app.py

@@ -1,4 +1,3 @@
-import contextlib
 from enum import Enum, auto
 from urllib.parse import urlencode
 
@@ -64,7 +63,7 @@
     st.session_state["select_reports__queries"] = default
 
 if "select_reports__example_queries" not in st.session_state:
-    default = [0, 2]
+    default = [1, 3]
     if url_params_queries:
         default = [
             i for i, k in enumerate(example_queries_items) if k[1] in url_params_queries

dev_utils/dashboard_app/constants.py

@@ -1,6 +1,7 @@
 import streamlit_antd_components as sac
 
 example_queries_items = [
+    (sac.ChipItem(label="Unselect All"), None),
     (sac.ChipItem(icon="apple", label="Latest apple 10-Q"), "AAPL"),
     (sac.ChipItem(icon="google", label="Two Latest alphabet 10-Q"), "2/GOOG"),
     (

dev_utils/dashboard_app/select_reports.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from urllib.parse import urlencode
 
 import streamlit as st
@@ -20,27 +22,51 @@ def render_select_reports():
         """,
         unsafe_allow_html=True,
     )
+
+    class OnChangeHandler:
+        def __init__(self, key):
+            self.key = key
+
+        def __call__(self, value):
+            if isinstance(value, list):
+                if len(value) >= 2 and 0 in value and value[0] != 0:
+                    return [0]  # [v for v in value if v != 0]
+                if len(value) >= 2 and value[0] == 0:
+                    return [v for v in value if v != 0]
+                elif len(value) == 0:
+                    return [0]
+            return value
+
+    handler = OnChangeHandler("actual")
     st_utils.st_unkeep("select_reports__example_queries")
-    selected_example_queries = sac.chip(
-        items=[k[0] for k in example_queries_items],
-        label="Get started with examples:",
-        size="xs",
-        format_func="title",
-        align="start",
-        index=st.session_state.select_reports__example_queries,
-        variant="outline",
-        multiple=True,
-        return_index=True,
-        key="_select_reports__example_queries",
-        on_change=lambda: st_utils.st_keep("select_reports__example_queries"),
+    selected_example_queries = handler(
+        sac.chip(
+            items=[k[0] for k in example_queries_items],
+            label="Get started with examples:",
+            size="xs",
+            format_func="title",
+            align="start",
+            index=st.session_state.select_reports__example_queries,
+            variant="outline",
+            multiple=True,
+            return_index=True,
+            key="_select_reports__example_queries",
+            on_change=lambda: st_utils.st_keep(
+                "select_reports__example_queries",
+                handler,
+            ),
+        ),
     )
-
     avoidlist = [
         k[1]
         for i, k in enumerate(example_queries_items)
         if i not in selected_example_queries
     ]
-    addlist = [example_queries_items[i][1] for i in selected_example_queries]
+    addlist = [
+        example_queries_items[i][1]
+        for i in selected_example_queries
+        if example_queries_items[i][1]
+    ]
 
     current = [
         k

dev_utils/dashboard_app/streamlit_utils.py

@@ -135,13 +135,25 @@ def get_style_change_top_page_margin():
     return "div[class^='block-container'] { padding-top: 2rem; }".strip()
 
 
-def st_keep(key):
-    "https://stackoverflow.com/questions/74968179/session-state-is-reset-in-streamlit-multipage-app"
+def st_keep(key, value_func=None) -> None:
+    """
+    Keep a widget's value in session state.
+    https://stackoverflow.com/questions/74968179/session-state-is-reset-in-streamlit-multipage-app
+    """
     # Copy from temporary widget key to permanent key
-    st.session_state[key] = st.session_state["_" + key]
+    new_value = st.session_state["_" + key]
+    if value_func:
+        new_value = value_func(new_value)
+    st.session_state[key] = new_value
 
 
-def st_unkeep(key):
-    "https://stackoverflow.com/questions/74968179/session-state-is-reset-in-streamlit-multipage-app"
+def st_unkeep(key, value_func=None) -> None:
+    """
+    Recall a widget's value from session state.
+    https://stackoverflow.com/questions/74968179/session-state-is-reset-in-streamlit-multipage-app
+    """
     # Copy from permanent key to temporary widget key
-    st.session_state["_" + key] = st.session_state[key]
+    new_value = st.session_state[key]
+    if value_func:
+        new_value = value_func(new_value)
+    st.session_state["_" + key] = new_value