Appearance setting for show/hide scroll bar on chat window (#2187)

* implement appearance setting for show/hide scrollbar

* put back comments

* revert backend for show_scrollbar

* show scrollbar save to localstorage

* old model function

* lint

* edit

---------

Co-authored-by: Timothy Carambat <rambat1010@gmail.com>

frontend/src/components/WorkspaceChat/ChatContainer/ChatHistory/index.jsx

+import React, { useEffect, useRef, useState } from "react";
 import HistoricalMessage from "./HistoricalMessage";
 import PromptReply from "./PromptReply";
-import { useEffect, useRef, useState } from "react";
 import { useManageWorkspaceModal } from "../../../Modals/ManageWorkspace";
 import ManageWorkspace from "../../../Modals/ManageWorkspace";
 import { ArrowDown } from "@phosphor-icons/react";
@@ -10,6 +10,7 @@ import Chartable from "./Chartable";
 import Workspace from "@/models/workspace";
 import { useParams } from "react-router-dom";
 import paths from "@/utils/paths";
+import Appearance from "@/models/appearance";
 
 export default function ChatHistory({
   history = [],
@@ -25,6 +26,7 @@ export default function ChatHistory({
   const [isAtBottom, setIsAtBottom] = useState(true);
   const chatHistoryRef = useRef(null);
   const [textSize, setTextSize] = useState("normal");
+  const showScrollbar = Appearance.getSettings()?.showScrollbar || false;
 
   const getTextSizeClass = (size) => {
     switch (size) {
@@ -190,7 +192,9 @@ export default function ChatHistory({
 
   return (
     <div
-      className={`markdown text-white/80 font-light ${textSize} h-full md:h-[83%] pb-[100px] pt-6 md:pt-0 md:pb-20 md:mx-0 overflow-y-scroll flex flex-col justify-start no-scroll`}
+      className={`markdown text-white/80 font-light ${textSize} h-full md:h-[83%] pb-[100px] pt-6 md:pt-0 md:pb-20 md:mx-0 overflow-y-scroll flex flex-col justify-start ${
+        showScrollbar ? "" : "no-scroll"
+      }`}
       id="chat-history"
       ref={chatHistoryRef}
     >

frontend/src/models/appearance.js

+import { APPEARANCE_SETTINGS } from "@/utils/constants";
+
+const Appearance = {
+  /**
+   * Fetches any locally storage settings for the user
+   * @returns {{showScrollbar: boolean}}
+   */
+  getSettings: () => {
+    const settings = localStorage.getItem(APPEARANCE_SETTINGS);
+    return settings ? JSON.parse(settings) : { showScrollbar: false };
+  },
+
+  /**
+   * Updates locally stored user settings
+   * @param {object} newSettings - new settings to update.
+   * @returns {object}
+   */
+  updateSettings: (newSettings) => {
+    const updatedSettings = { ...Appearance.getSettings(), ...newSettings };
+    localStorage.setItem(APPEARANCE_SETTINGS, JSON.stringify(updatedSettings));
+    return updatedSettings;
+  },
+};
+
+export default Appearance;

frontend/src/pages/GeneralSettings/Appearance/ShowScrollbar/index.jsx

+import React, { useState, useEffect } from "react";
+import Appearance from "@/models/appearance";
+
+export default function ShowScrollbar() {
+  const [saving, setSaving] = useState(false);
+  const [showScrollbar, setShowScrollbar] = useState(false);
+
+  const handleChange = async (e) => {
+    const newValue = e.target.checked;
+    setShowScrollbar(newValue);
+    setSaving(true);
+    try {
+      Appearance.updateSettings({ showScrollbar: newValue });
+    } catch (error) {
+      console.error("Failed to update appearance settings:", error);
+      setShowScrollbar(!newValue);
+    }
+    setSaving(false);
+  };
+
+  useEffect(() => {
+    function fetchSettings() {
+      const settings = Appearance.getSettings();
+      setShowScrollbar(settings.showScrollbar);
+    }
+    fetchSettings();
+  }, []);
+
+  return (
+    <div className="flex flex-col w-full gap-y-4 mt-6">
+      <div className="flex flex-col gap-y-1">
+        <h2 className="text-base leading-6 font-bold text-white">
+          Show chat window scrollbar
+        </h2>
+        <p className="text-xs leading-[18px] font-base text-white/60">
+          Enable or disable the scrollbar in the chat window
+        </p>
+        <div className="mt-2">
+          <label className="relative inline-flex cursor-pointer items-center">
+            <input
+              id="show_scrollbar"
+              type="checkbox"
+              name="show_scrollbar"
+              value="yes"
+              checked={showScrollbar}
+              onChange={handleChange}
+              disabled={saving}
+              className="peer sr-only"
+            />
+            <div className="pointer-events-none peer h-6 w-11 rounded-full bg-stone-400 after:absolute after:left-[2px] after:top-[2px] after:h-5 after:w-5 after:rounded-full after:shadow-xl after:border after:border-gray-600 after:bg-white after:box-shadow-md after:transition-all after:content-[''] peer-checked:bg-lime-300 peer-checked:after:translate-x-full peer-checked:after:border-white peer-focus:outline-none peer-focus:ring-4 peer-focus:ring-blue-800"></div>
+          </label>
+        </div>
+      </div>
+    </div>
+  );
+}

frontend/src/pages/GeneralSettings/Appearance/index.jsx

@@ -8,6 +8,7 @@ import { useTranslation } from "react-i18next";
 import CustomAppName from "./CustomAppName";
 import LanguagePreference from "./LanguagePreference";
 import CustomSiteSettings from "./CustomSiteSettings";
+import ShowScrollbar from "./ShowScrollbar";
 
 export default function Appearance() {
   const { t } = useTranslation();
@@ -30,6 +31,7 @@ export default function Appearance() {
             </p>
           </div>
           <LanguagePreference />
+          <ShowScrollbar />
           <CustomLogo />
           <CustomAppName />
           <CustomMessages />

frontend/src/utils/constants.js

@@ -9,6 +9,7 @@ export const SEEN_WATCH_ALERT = "anythingllm_watched_document_alert";
 
 export const USER_BACKGROUND_COLOR = "bg-historical-msg-user";
 export const AI_BACKGROUND_COLOR = "bg-historical-msg-system";
+export const APPEARANCE_SETTINGS = "anythingllm_appearance_settings";
 
 export const OLLAMA_COMMON_URLS = [
   "http://127.0.0.1:11434",