refmt

* Rewrite MostRecentActivity to leverage AppStatePersistenceUtility.

* Fix format. Update type enum.

* Migrate Item enum to string enum

* Fix unit tests

* Fix build issue

.devcontainer/Dockerfile

@@ -0,0 +1,16 @@
+FROM mcr.microsoft.com/devcontainers/typescript-node:1-22-bookworm
+
+# Install pre-reqs for gyp, and 'canvas' npm module
+RUN apt-get update && \
+    apt-get install -y \
+        make \
+        gcc \
+        g++ \
+        python3-minimal \
+        libcairo2-dev \
+        libpango1.0-dev \
+        && \
+    rm -rf /var/lib/apt/lists/*
+
+# Install node-gyp to build native modules
+RUN npm install -g node-gyp

.devcontainer/devcontainer.json

@@ -0,0 +1,32 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/typescript-node
+{
+	"name": "Azure Cosmos DB Explorer",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"build": {
+		"dockerfile": "Dockerfile"
+	},
+	"onCreateCommand": ".devcontainer/oncreate",
+	"features": {
+		"ghcr.io/devcontainers/features/azure-cli:1": {
+			"version": "latest"
+		},
+		"ghcr.io/devcontainers/features/github-cli:1": {
+			"installDirectlyFromGitHubRelease": true,
+			"version": "latest"
+		},
+		"ghcr.io/devcontainers/features/sshd:1": {
+			"version": "latest"
+		}
+	}
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "yarn install",
+	// Configure tool-specific properties.
+	// "customizations": {},
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.devcontainer/oncreate

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+# Install packages once, to prime the node_modules directory.
+npm ci

jest.config.js

@@ -174,7 +174,7 @@ module.exports = {
   },
 
   // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
-  transformIgnorePatterns: ["/node_modules/", "/externals/"],
+  transformIgnorePatterns: ["/node_modules/(?!@fluentui/react-icons)", "/externals/"],
 
   // An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them
   // unmockedModulePathPatterns: undefined,

less/documentDB.less

@@ -1906,8 +1906,14 @@ input::-webkit-calendar-picker-indicator::after {
 }
 
 .nav-tabs-margin {
-  padding-top: 5px;
+  height: 32px;
   background-color: #f2f2f2;
+
+  .nav-tabs {
+    display: flex;
+    align-items: flex-end;
+    height: 100%;
+  }
 }
 
 .navTabHeight {
@@ -2612,6 +2618,7 @@ a:link {
 .tabPanesContainer {
   display: flex;
   flex-grow: 1;
+  flex-direction: column;
   overflow: hidden;
 }
 

playwright.config.ts

@@ -12,7 +12,6 @@ export default defineConfig({
   reporter: process.env.CI ? "blob" : "html",
   timeout: 10 * 60 * 1000,
   use: {
-    actionTimeout: 5 * 60 * 1000,
     trace: "off",
     video: "off",
     screenshot: "on",
@@ -23,7 +22,8 @@ export default defineConfig({
   },
 
   expect: {
-    timeout: 5 * 60 * 1000,
+    // Many of our expectations take a little longer than the default 5 seconds.
+    timeout: 15 * 1000,
   },
 
   projects: [

src/Common/Constants.ts

@@ -134,6 +134,9 @@ export class BackendApi {
   public static readonly GenerateToken: string = "GenerateToken";
   public static readonly PortalSettings: string = "PortalSettings";
   public static readonly AccountRestrictions: string = "AccountRestrictions";
+  public static readonly RuntimeProxy: string = "RuntimeProxy";
+  public static readonly DisallowedLocations: string = "DisallowedLocations";
+  public static readonly SampleData: string = "SampleData";
 }
 
 export class PortalBackendEndpoints {
@@ -183,6 +186,12 @@ export class CassandraProxyAPIs {
   public static readonly connectionStringSchemaApi: string = "api/connectionstring/cassandra/schema";
 }
 
+export class AadEndpoints {
+  public static readonly Prod: string = "https://login.microsoftonline.com/";
+  public static readonly Fairfax: string = "https://login.microsoftonline.us/";
+  public static readonly Mooncake: string = "https://login.partner.microsoftonline.cn/";
+}
+
 export class Queries {
   public static CustomPageOption: string = "custom";
   public static UnlimitedPageOption: string = "unlimited";
@@ -284,6 +293,7 @@ export class HttpStatusCodes {
   public static readonly Accepted: number = 202;
   public static readonly NoContent: number = 204;
   public static readonly NotModified: number = 304;
+  public static readonly BadRequest: number = 400;
   public static readonly Unauthorized: number = 401;
   public static readonly Forbidden: number = 403;
   public static readonly NotFound: number = 404;
@@ -495,7 +505,7 @@ export class PriorityLevel {
   public static readonly Default = "low";
 }
 
-export const QueryCopilotSampleDatabaseId = "CopilotSampleDb";
+export const QueryCopilotSampleDatabaseId = "CopilotSampleDB";
 export const QueryCopilotSampleContainerId = "SampleContainer";
 
 export const QueryCopilotSampleContainerSchema = {

src/Common/CosmosClient.ts

@@ -3,15 +3,16 @@ import { getAuthorizationTokenUsingResourceTokens } from "Common/getAuthorizatio
 import { AuthorizationToken } from "Contracts/FabricMessageTypes";
 import { checkDatabaseResourceTokensValidity } from "Platform/Fabric/FabricUtil";
 import { LocalStorageUtility, StorageKey } from "Shared/StorageUtility";
+import { useNewPortalBackendEndpoint } from "Utils/EndpointUtils";
 import { AuthType } from "../AuthType";
-import { PriorityLevel } from "../Common/Constants";
+import { BackendApi, PriorityLevel } from "../Common/Constants";
+import * as Logger from "../Common/Logger";
 import { Platform, configContext } from "../ConfigContext";
 import { userContext } from "../UserContext";
 import { logConsoleError } from "../Utils/NotificationConsoleUtils";
 import * as PriorityBasedExecutionUtils from "../Utils/PriorityBasedExecutionUtils";
 import { EmulatorMasterKey, HttpHeaders } from "./Constants";
 import { getErrorMessage } from "./ErrorHandlingUtils";
-import * as Logger from "../Common/Logger";
 
 const _global = typeof self === "undefined" ? window : self;
 
@@ -123,6 +124,37 @@ export async function getTokenFromAuthService(
   verb: string,
   resourceType: string,
   resourceId?: string,
+): Promise<AuthorizationToken> {
+  if (!useNewPortalBackendEndpoint(BackendApi.RuntimeProxy)) {
+    return getTokenFromAuthService_ToBeDeprecated(verb, resourceType, resourceId);
+  }
+
+  try {
+    const host: string = configContext.PORTAL_BACKEND_ENDPOINT;
+    const response: Response = await _global.fetch(host + "/api/connectionstring/runtimeproxy/authorizationtokens", {
+      method: "POST",
+      headers: {
+        "content-type": "application/json",
+        "x-ms-encrypted-auth-token": userContext.accessToken,
+      },
+      body: JSON.stringify({
+        verb,
+        resourceType,
+        resourceId,
+      }),
+    });
+    const result: AuthorizationToken = await response.json();
+    return result;
+  } catch (error) {
+    logConsoleError(`Failed to get authorization headers for ${resourceType}: ${getErrorMessage(error)}`);
+    return Promise.reject(error);
+  }
+}
+
+export async function getTokenFromAuthService_ToBeDeprecated(
+  verb: string,
+  resourceType: string,
+  resourceId?: string,
 ): Promise<AuthorizationToken> {
   try {
     const host = configContext.BACKEND_ENDPOINT;

src/Common/EnvironmentUtility.test.ts

@@ -1,3 +1,5 @@
+import { PortalBackendEndpoints } from "Common/Constants";
+import { updateConfigContext } from "ConfigContext";
 import * as EnvironmentUtility from "./EnvironmentUtility";
 
 describe("Environment Utility Test", () => {
@@ -11,4 +13,18 @@ describe("Environment Utility Test", () => {
     const expectedResult = "test/";
     expect(EnvironmentUtility.normalizeArmEndpoint(uri)).toEqual(expectedResult);
   });
+
+  it("Detect environment is Mpac", () => {
+    updateConfigContext({
+      PORTAL_BACKEND_ENDPOINT: PortalBackendEndpoints.Mpac,
+    });
+    expect(EnvironmentUtility.getEnvironment()).toBe(EnvironmentUtility.Environment.Mpac);
+  });
+
+  it("Detect environment is Development", () => {
+    updateConfigContext({
+      PORTAL_BACKEND_ENDPOINT: PortalBackendEndpoints.Development,
+    });
+    expect(EnvironmentUtility.getEnvironment()).toBe(EnvironmentUtility.Environment.Development);
+  });
 });

src/Common/EnvironmentUtility.ts

@@ -1,6 +1,29 @@
+import { PortalBackendEndpoints } from "Common/Constants";
+import { configContext } from "ConfigContext";
+
 export function normalizeArmEndpoint(uri: string): string {
   if (uri && uri.slice(-1) !== "/") {
     return `${uri}/`;
   }
   return uri;
 }
+
+export enum Environment {
+  Development = "Development",
+  Mpac = "MPAC",
+  Prod = "Prod",
+  Fairfax = "Fairfax",
+  Mooncake = "Mooncake",
+}
+
+export const getEnvironment = (): Environment => {
+  const environmentMap: { [key: string]: Environment } = {
+    [PortalBackendEndpoints.Development]: Environment.Development,
+    [PortalBackendEndpoints.Mpac]: Environment.Mpac,
+    [PortalBackendEndpoints.Prod]: Environment.Prod,
+    [PortalBackendEndpoints.Fairfax]: Environment.Fairfax,
+    [PortalBackendEndpoints.Mooncake]: Environment.Mooncake,
+  };
+
+  return environmentMap[configContext.PORTAL_BACKEND_ENDPOINT];
+};

src/Common/ErrorHandlingUtils.ts

@@ -53,7 +53,8 @@ const replaceKnownError = (errorMessage: string): string => {
     return "Partition key paths must contain only valid characters and not contain a trailing slash or wildcard character.";
   } else if (
     errorMessage?.indexOf("The user aborted a request") >= 0 ||
-    errorMessage?.indexOf("The operation was aborted") >= 0
+    errorMessage?.indexOf("The operation was aborted") >= 0 ||
+    errorMessage === "signal is aborted without reason"
   ) {
     return "User aborted query.";
   }

src/Common/MongoProxyClient.ts

@@ -550,6 +550,49 @@ export function deleteDocument_ToBeDeprecated(
     });
 }
 
+export function deleteDocuments(
+  databaseId: string,
+  collection: Collection,
+  documentIds: DocumentId[],
+): Promise<{
+  deletedCount: number;
+  isAcknowledged: boolean;
+}> {
+  const { databaseAccount } = userContext;
+  const resourceEndpoint = databaseAccount.properties.mongoEndpoint || databaseAccount.properties.documentEndpoint;
+
+  const rids = documentIds.map((documentId) => documentId.id());
+
+  const params = {
+    databaseID: databaseId,
+    collectionID: collection.id(),
+    resourceUrl: `${resourceEndpoint}`,
+    resourceIDs: rids,
+    subscriptionID: userContext.subscriptionId,
+    resourceGroup: userContext.resourceGroup,
+    databaseAccountName: databaseAccount.name,
+  };
+  const endpoint = getFeatureEndpointOrDefault("bulkdelete");
+
+  return window
+    .fetch(`${endpoint}/bulkdelete`, {
+      method: "DELETE",
+      body: JSON.stringify(params),
+      headers: {
+        ...defaultHeaders,
+        ...authHeaders(),
+        [HttpHeaders.contentType]: ContentType.applicationJson,
+      },
+    })
+    .then(async (response) => {
+      if (response.ok) {
+        const result = await response.json();
+        return result;
+      }
+      return await errorHandling(response, "deleting documents", params);
+    });
+}
+
 export function createMongoCollectionWithProxy(
   params: DataModels.CreateCollectionParams,
 ): Promise<DataModels.Collection> {
@@ -677,23 +720,22 @@ export function useMongoProxyEndpoint(api: string): boolean {
     MongoProxyEndpoints.Local,
     MongoProxyEndpoints.Mpac,
     MongoProxyEndpoints.Prod,
-    // MongoProxyEndpoints.Fairfax,
+    MongoProxyEndpoints.Fairfax,
+    MongoProxyEndpoints.Mooncake,
   ];
-  let canAccessMongoProxy: boolean = userContext.databaseAccount.properties.publicNetworkAccess === "Enabled";
-  if (
-    configContext.MONGO_PROXY_ENDPOINT !== MongoProxyEndpoints.Local &&
-    userContext.databaseAccount.properties.ipRules?.length > 0
-  ) {
-    canAccessMongoProxy = canAccessMongoProxy && configContext.MONGO_PROXY_OUTBOUND_IPS_ALLOWLISTED;
-  }
 
   return (
-    canAccessMongoProxy &&
     configContext.NEW_MONGO_APIS?.includes(api) &&
     activeMongoProxyEndpoints.includes(configContext.MONGO_PROXY_ENDPOINT)
   );
 }
 
+export class ThrottlingError extends Error {
+  constructor(message: string) {
+    super(message);
+  }
+}
+
 // TODO: This function throws most of the time except on Forbidden which is a bit strange
 // It causes problems for TypeScript understanding the types
 async function errorHandling(response: Response, action: string, params: unknown): Promise<void> {
@@ -703,6 +745,14 @@ async function errorHandling(response: Response, action: string, params: unknown
   if (response.status === HttpStatusCodes.Forbidden) {
     sendMessage({ type: MessageTypes.ForbiddenError, reason: errorMessage });
     return;
+  } else if (
+    response.status === HttpStatusCodes.BadRequest &&
+    errorMessage.includes("Error=16500") &&
+    errorMessage.includes("RetryAfterMs=")
+  ) {
+    // If throttling is happening, Cosmos DB will return a 400 with a body of:
+    // A write operation resulted in an error. Error=16500, RetryAfterMs=4, Details='Batch write error.
+    throw new ThrottlingError(errorMessage);
   }
   throw new Error(errorMessage);
 }

src/Common/QueryError.test.ts

@@ -0,0 +1,94 @@
+import QueryError, { QueryErrorLocation, QueryErrorSeverity } from "Common/QueryError";
+
+describe("QueryError.tryParse", () => {
+  const testErrorLocationResolver = ({ start, end }: { start: number; end: number }) =>
+    new QueryErrorLocation(
+      { offset: start, lineNumber: start, column: start },
+      { offset: end, lineNumber: end, column: end },
+    );
+
+  it("handles a string error", () => {
+    const error = "error";
+    const result = QueryError.tryParse(error, testErrorLocationResolver);
+    expect(result).toEqual([new QueryError("error", QueryErrorSeverity.Error)]);
+  });
+
+  it("handles an error object", () => {
+    const error = {
+      message: "error",
+      severity: "Warning",
+      location: { start: 0, end: 1 },
+      code: "code",
+    };
+    const result = QueryError.tryParse(error, testErrorLocationResolver);
+    expect(result).toEqual([
+      new QueryError(
+        "error",
+        QueryErrorSeverity.Warning,
+        "code",
+        new QueryErrorLocation({ offset: 0, lineNumber: 0, column: 0 }, { offset: 1, lineNumber: 1, column: 1 }),
+      ),
+    ]);
+  });
+
+  it("handles a JSON message without syntax errors", () => {
+    const innerError = {
+      code: "BadRequest",
+      message: "Your query is bad, and you should feel bad",
+    };
+    const message = JSON.stringify(innerError);
+    const outerError = {
+      code: "BadRequest",
+      message,
+    };
+
+    const result = QueryError.tryParse(outerError, testErrorLocationResolver);
+    expect(result).toEqual([
+      new QueryError("Your query is bad, and you should feel bad", QueryErrorSeverity.Error, "BadRequest"),
+    ]);
+  });
+
+  // Imitate the value coming from the backend, which has the syntax errors serialized as JSON in the message.
+  it("handles single-nested error", () => {
+    const errors = [
+      {
+        message: "error1",
+        severity: "Warning",
+        location: { start: 0, end: 1 },
+        code: "code1",
+      },
+      {
+        message: "error2",
+        severity: "Error",
+        location: { start: 2, end: 3 },
+        code: "code2",
+      },
+    ];
+    const innerError = {
+      code: "BadRequest",
+      message: "Your query is bad, and you should feel bad",
+      errors,
+    };
+    const message = JSON.stringify(innerError);
+    const outerError = {
+      code: "BadRequest",
+      message,
+    };
+
+    const result = QueryError.tryParse(outerError, testErrorLocationResolver);
+    expect(result).toEqual([
+      new QueryError(
+        "error1",
+        QueryErrorSeverity.Warning,
+        "code1",
+        new QueryErrorLocation({ offset: 0, lineNumber: 0, column: 0 }, { offset: 1, lineNumber: 1, column: 1 }),
+      ),
+      new QueryError(
+        "error2",
+        QueryErrorSeverity.Error,
+        "code2",
+        new QueryErrorLocation({ offset: 2, lineNumber: 2, column: 2 }, { offset: 3, lineNumber: 3, column: 3 }),
+      ),
+    ]);
+  });
+});

src/Common/QueryError.ts

@@ -0,0 +1,247 @@
+import { monaco } from "Explorer/LazyMonaco";
+import { getRUThreshold, ruThresholdEnabled } from "Shared/StorageUtility";
+
+export enum QueryErrorSeverity {
+  Error = "Error",
+  Warning = "Warning",
+}
+
+export class QueryErrorLocation {
+  constructor(
+    public start: ErrorPosition,
+    public end: ErrorPosition,
+  ) {}
+}
+
+export class ErrorPosition {
+  constructor(
+    public offset: number,
+    public lineNumber?: number,
+    public column?: number,
+  ) {}
+}
+
+// Maps severities to numbers for sorting.
+const severityMap: Record<QueryErrorSeverity, number> = {
+  Error: 1,
+  Warning: 0,
+};
+
+export function compareSeverity(left: QueryErrorSeverity, right: QueryErrorSeverity): number {
+  return severityMap[left] - severityMap[right];
+}
+
+export function createMonacoErrorLocationResolver(
+  editor: monaco.editor.IStandaloneCodeEditor,
+  selection?: monaco.Selection,
+): (location: { start: number; end: number }) => QueryErrorLocation {
+  return ({ start, end }) => {
+    // Start and end are absolute offsets (character index) in the document.
+    // But we need line numbers and columns for the monaco editor.
+    // To get those, we use the editor's model to convert the offsets to positions.
+    const model = editor.getModel();
+    if (!model) {
+      return new QueryErrorLocation(new ErrorPosition(start), new ErrorPosition(end));
+    }
+
+    // If the error was found in a selection, adjust the start and end positions to be relative to the document.
+    if (selection) {
+      // Get the character index of the start of the selection.
+      const selectionStartOffset = model.getOffsetAt(selection.getStartPosition());
+
+      // Adjust the start and end positions to be relative to the document.
+      start = selectionStartOffset + start;
+      end = selectionStartOffset + end;
+
+      // Now, when we resolve the positions, they will be relative to the document and appear in the correct location.
+    }
+
+    const startPos = model.getPositionAt(start);
+    const endPos = model.getPositionAt(end);
+    return new QueryErrorLocation(
+      new ErrorPosition(start, startPos.lineNumber, startPos.column),
+      new ErrorPosition(end, endPos.lineNumber, endPos.column),
+    );
+  };
+}
+
+export const createMonacoMarkersForQueryErrors = (errors: QueryError[]) => {
+  if (!errors) {
+    return [];
+  }
+
+  return errors
+    .map((error): monaco.editor.IMarkerData => {
+      // Validate that we have what we need to make a marker
+      if (
+        error.location === undefined ||
+        error.location.start === undefined ||
+        error.location.end === undefined ||
+        error.location.start.lineNumber === undefined ||
+        error.location.end.lineNumber === undefined ||
+        error.location.start.column === undefined ||
+        error.location.end.column === undefined
+      ) {
+        return null;
+      }
+
+      return {
+        message: error.message,
+        severity: error.getMonacoSeverity(),
+        startLineNumber: error.location.start.lineNumber,
+        startColumn: error.location.start.column,
+        endLineNumber: error.location.end.lineNumber,
+        endColumn: error.location.end.column,
+      };
+    })
+    .filter((marker) => !!marker);
+};
+
+export interface ErrorEnrichment {
+  title?: string;
+  message: string;
+  learnMoreUrl?: string;
+}
+
+const REPLACEMENT_MESSAGES: Record<string, (original: string) => string> = {
+  OPERATION_RU_LIMIT_EXCEEDED: (original) => {
+    if (ruThresholdEnabled()) {
+      const threshold = getRUThreshold();
+      return `Query exceeded the Request Unit (RU) limit of ${threshold} RUs. You can change this limit in Data Explorer settings.`;
+    }
+    return original;
+  },
+};
+
+const HELP_LINKS: Record<string, string> = {
+  OPERATION_RU_LIMIT_EXCEEDED:
+    "https://learn.microsoft.com/en-us/azure/cosmos-db/data-explorer#configure-request-unit-threshold",
+};
+
+export default class QueryError {
+  message: string;
+  helpLink?: string;
+
+  constructor(
+    message: string,
+    public severity: QueryErrorSeverity,
+    public code?: string,
+    public location?: QueryErrorLocation,
+    helpLink?: string,
+  ) {
+    // Automatically replace the message with a more Data Explorer-specific message if we have for this error code.
+    this.message = REPLACEMENT_MESSAGES[code] ? REPLACEMENT_MESSAGES[code](message) : message;
+
+    // Automatically set the help link if we have one for this error code.
+    this.helpLink = helpLink ?? HELP_LINKS[code];
+  }
+
+  getMonacoSeverity(): monaco.MarkerSeverity {
+    // It's very difficult to use the monaco.MarkerSeverity enum from here, so we'll just use the numbers directly.
+    // See: https://microsoft.github.io/monaco-editor/typedoc/enums/MarkerSeverity.html
+    switch (this.severity) {
+      case QueryErrorSeverity.Error:
+        return 8;
+      case QueryErrorSeverity.Warning:
+        return 4;
+      default:
+        return 2; // Info
+    }
+  }
+
+  /** Attempts to parse a query error from a string or object.
+   *
+   * @param error The error to parse.
+   * @returns An array of query errors if the error could be parsed, or null otherwise.
+   */
+  static tryParse(
+    error: unknown,
+    locationResolver?: (location: { start: number; end: number }) => QueryErrorLocation,
+  ): QueryError[] {
+    locationResolver =
+      locationResolver ||
+      (({ start, end }) => new QueryErrorLocation(new ErrorPosition(start), new ErrorPosition(end)));
+    const errors = QueryError.tryParseObject(error, locationResolver);
+    if (errors !== null) {
+      return errors;
+    }
+
+    const errorMessage = error as string;
+
+    // Map some well known messages to richer errors
+    const knownError = knownErrors[errorMessage];
+    if (knownError) {
+      return [knownError];
+    } else {
+      return [new QueryError(errorMessage, QueryErrorSeverity.Error)];
+    }
+  }
+
+  static read(
+    error: unknown,
+    locationResolver: (location: { start: number; end: number }) => QueryErrorLocation,
+  ): QueryError | null {
+    if (typeof error !== "object" || error === null) {
+      return null;
+    }
+
+    const message = "message" in error && typeof error.message === "string" ? error.message : undefined;
+    if (!message) {
+      return null; // Invalid error (no message).
+    }
+
+    const severity =
+      "severity" in error && typeof error.severity === "string"
+        ? (error.severity as QueryErrorSeverity)
+        : QueryErrorSeverity.Error;
+    const location =
+      "location" in error && typeof error.location === "object"
+        ? locationResolver(error.location as { start: number; end: number })
+        : undefined;
+    const code = "code" in error && typeof error.code === "string" ? error.code : undefined;
+    return new QueryError(message, severity, code, location);
+  }
+
+  private static tryParseObject(
+    error: unknown,
+    locationResolver: (location: { start: number; end: number }) => QueryErrorLocation,
+  ): QueryError[] | null {
+    let message: string | undefined;
+    if (typeof error === "object" && "message" in error && typeof error.message === "string") {
+      message = error.message;
+    } else {
+      // Unsupported error format.
+      return null;
+    }
+
+    // Assign to a new variable because of a TypeScript flow typing quirk, see below.
+    if (message.startsWith("Message: ")) {
+      // Reassigning this to 'error' restores the original type of 'error', which is 'unknown'.
+      // So we use a separate variable to avoid this.
+      message = message.substring("Message: ".length);
+    }
+
+    const lines = message.split("\n");
+    message = lines[0].trim();
+
+    let parsed: unknown;
+    try {
+      parsed = JSON.parse(message);
+    } catch (e) {
+      // The message doesn't contain a nested error.
+      return [QueryError.read(error, locationResolver)];
+    }
+
+    if (typeof parsed === "object") {
+      if ("errors" in parsed && Array.isArray(parsed.errors)) {
+        return parsed.errors.map((e) => QueryError.read(e, locationResolver)).filter((e) => e !== null);
+      }
+      return [QueryError.read(parsed, locationResolver)];
+    }
+    return null;
+  }
+}
+
+const knownErrors: Record<string, QueryError> = {
+  "User aborted query.": new QueryError("User aborted query.", QueryErrorSeverity.Warning),
+};

src/Common/Tooltip/InfoTooltip.tsx

@@ -3,11 +3,12 @@ import * as React from "react";
 
 export interface TooltipProps {
   children: string;
+  className?: string;
 }
 
-export const InfoTooltip: React.FunctionComponent<TooltipProps> = ({ children }: TooltipProps) => {
+export const InfoTooltip: React.FunctionComponent<TooltipProps> = ({ children, className }: TooltipProps) => {
   return (
-    <span>
+    <span className={className}>
       <TooltipHost content={children}>
         <Icon iconName="Info" ariaLabel={children} className="panelInfoIcon" tabIndex={0} />
       </TooltipHost>

src/Common/dataAccess/deleteDocument.ts

@@ -26,14 +26,23 @@ export const deleteDocument = async (collection: CollectionBase, documentId: Doc
   }
 };
 
+export interface IBulkDeleteResult {
+  documentId: DocumentId;
+  requestCharge: number;
+  statusCode: number;
+  retryAfterMilliseconds?: number;
+}
+
 /**
  * Bulk delete documents
  * @param collection
  * @param documentId
- * @returns array of ids that were successfully deleted
+ * @returns array of results and status codes
  */
-export const deleteDocuments = async (collection: CollectionBase, documentIds: DocumentId[]): Promise<DocumentId[]> => {
-  const nbDocuments = documentIds.length;
+export const deleteDocuments = async (
+  collection: CollectionBase,
+  documentIds: DocumentId[],
+): Promise<IBulkDeleteResult[]> => {
   const clearMessage = logConsoleProgress(`Deleting ${documentIds.length} ${getEntityName(true)}`);
   try {
     const v2Container = await client().database(collection.databaseId).container(collection.id());
@@ -56,18 +65,17 @@ export const deleteDocuments = async (collection: CollectionBase, documentIds: D
         operationType: BulkOperationType.Delete,
       }));
 
-      const promise = v2Container.items.bulk(operations).then((bulkResult) => {
-        return documentIdsChunk.filter((_, index) => bulkResult[index].statusCode === 204);
+      const promise = v2Container.items.bulk(operations).then((bulkResults) => {
+        return bulkResults.map((bulkResult, index) => {
+          const documentId = documentIdsChunk[index];
+          return { ...bulkResult, documentId };
+        });
       });
       promiseArray.push(promise);
     }
 
     const allResult = await Promise.all(promiseArray);
     const flatAllResult = Array.prototype.concat.apply([], allResult);
-    logConsoleInfo(
-      `Successfully deleted ${getEntityName(flatAllResult.length > 1)}: ${flatAllResult.length} out of ${nbDocuments}`,
-    );
-    // TODO: handle case result.length != nbDocuments
     return flatAllResult;
   } catch (error) {
     handleError(

src/ConfigContext.ts

@@ -49,14 +49,12 @@ export interface ConfigContext {
   ARCADIA_ENDPOINT: string;
   ARCADIA_LIVY_ENDPOINT_DNS_ZONE: string;
   BACKEND_ENDPOINT?: string;
-  PORTAL_BACKEND_ENDPOINT?: string;
+  PORTAL_BACKEND_ENDPOINT: string;
   NEW_BACKEND_APIS?: BackendApi[];
   MONGO_BACKEND_ENDPOINT?: string;
-  MONGO_PROXY_ENDPOINT?: string;
-  MONGO_PROXY_OUTBOUND_IPS_ALLOWLISTED?: boolean;
+  MONGO_PROXY_ENDPOINT: string;
   NEW_MONGO_APIS?: string[];
-  CASSANDRA_PROXY_ENDPOINT?: string;
-  CASSANDRA_PROXY_OUTBOUND_IPS_ALLOWLISTED: boolean;
+  CASSANDRA_PROXY_ENDPOINT: string;
   NEW_CASSANDRA_APIS?: string[];
   PROXY_PATH?: string;
   JUNO_ENDPOINT: string;
@@ -87,7 +85,7 @@ let configContext: Readonly<ConfigContext> = {
     `^https:\\/\\/.*\\.analysis-df\\.net$`,
     `^https:\\/\\/.*\\.analysis-df\\.windows\\.net$`,
     `^https:\\/\\/.*\\.azure-test\\.net$`,
-    `^https:\\/\\/cosmos-explorer-preview\\.azurewebsites\\.net`,
+    `^https:\\/\\/cosmos-explorer-preview\\.azurewebsites\\.net$`,
   ], // Webpack injects this at build time
   gitSha: process.env.GIT_SHA,
   hostedExplorerURL: "https://cosmos.azure.com/",
@@ -117,11 +115,10 @@ let configContext: Readonly<ConfigContext> = {
     "deleteDocument",
     "createCollectionWithProxy",
     "legacyMongoShell",
+    // "bulkdelete",
   ],
-  MONGO_PROXY_OUTBOUND_IPS_ALLOWLISTED: false,
   CASSANDRA_PROXY_ENDPOINT: CassandraProxyEndpoints.Prod,
   NEW_CASSANDRA_APIS: ["postQuery", "createOrDelete", "getKeys", "getSchema"],
-  CASSANDRA_PROXY_OUTBOUND_IPS_ALLOWLISTED: false,
   isTerminalEnabled: false,
   isPhoenixEnabled: false,
 };

src/Explorer/ContextMenuButtonFactory.tsx

@@ -41,6 +41,10 @@ export interface DatabaseContextMenuButtonParams {
  * New resource tree (in ReactJS)
  */
 export const createDatabaseContextMenu = (container: Explorer, databaseId: string): TreeNodeMenuItem[] => {
+  if (configContext.platform === Platform.Fabric && userContext.fabricContext?.isReadOnly) {
+    return undefined;
+  }
+
   const items: TreeNodeMenuItem[] = [
     {
       iconSrc: AddCollectionIcon,

src/Explorer/Controls/CommandButton/CommandButtonComponent.tsx

@@ -1,23 +1,14 @@
 /**
  * React component for Command button component.
  */
+import Explorer from "Explorer/Explorer";
 import { KeyboardAction } from "KeyboardShortcuts";
 import * as React from "react";
-import CollapseChevronDownIcon from "../../../../images/QueryBuilder/CollapseChevronDown_16x.png";
-import { KeyCodes } from "../../../Common/Constants";
-import { Action, ActionModifiers } from "../../../Shared/Telemetry/TelemetryConstants";
-import * as TelemetryProcessor from "../../../Shared/Telemetry/TelemetryProcessor";
-import * as StringUtils from "../../../Utils/StringUtils";
 
 /**
  * Options for this component
  */
 export interface CommandButtonComponentProps {
-  /**
-   * font icon name for the button
-   */
-  iconName?: string;
-
   /**
    * image source for the button icon
    */
@@ -31,7 +22,7 @@ export interface CommandButtonComponentProps {
   /**
    * Click handler for command button click
    */
-  onCommandClick?: (e: React.SyntheticEvent | KeyboardEvent) => void;
+  onCommandClick?: (e: React.SyntheticEvent | KeyboardEvent, container: Explorer) => void;
 
   /**
    * Label for the button
@@ -120,157 +111,3 @@ export interface CommandButtonComponentProps {
    */
   keyboardAction?: KeyboardAction;
 }
-
-export class CommandButtonComponent extends React.Component<CommandButtonComponentProps> {
-  private dropdownElt: HTMLElement;
-  private expandButtonElt: HTMLElement;
-
-  public componentDidUpdate(): void {
-    if (!this.dropdownElt || !this.expandButtonElt) {
-      return;
-    }
-    $(this.dropdownElt).offset({ left: $(this.expandButtonElt).offset().left });
-  }
-
-  private onKeyPress(event: React.KeyboardEvent): boolean {
-    if (event.keyCode === KeyCodes.Space || event.keyCode === KeyCodes.Enter) {
-      this.commandClickCallback && this.commandClickCallback(event);
-      event.stopPropagation();
-      return false;
-    }
-    return true;
-  }
-
-  private onLauncherKeyDown(event: React.KeyboardEvent<HTMLDivElement>): boolean {
-    if (event.keyCode === KeyCodes.DownArrow) {
-      $(this.dropdownElt).hide();
-      $(this.dropdownElt).show().focus();
-      event.stopPropagation();
-      return false;
-    }
-    if (event.keyCode === KeyCodes.UpArrow) {
-      $(this.dropdownElt).hide();
-      event.stopPropagation();
-      return false;
-    }
-    return true;
-  }
-
-  private getCommandButtonId(): string {
-    if (this.props.id) {
-      return this.props.id;
-    } else {
-      return `commandButton-${StringUtils.stripSpacesFromString(this.props.commandButtonLabel)}`;
-    }
-  }
-
-  public static renderButton(options: CommandButtonComponentProps, key?: string): JSX.Element {
-    return <CommandButtonComponent key={key} {...options} />;
-  }
-
-  private commandClickCallback(e: React.SyntheticEvent): void {
-    if (this.props.disabled) {
-      return;
-    }
-
-    // TODO Query component's parent, not document
-    const el = document.querySelector(".commandDropdownContainer") as HTMLElement;
-    if (el) {
-      el.style.display = "none";
-    }
-    this.props.onCommandClick(e);
-    TelemetryProcessor.trace(Action.SelectItem, ActionModifiers.Mark, {
-      commandButtonClicked: this.props.commandButtonLabel,
-    });
-  }
-
-  private renderChildren(): JSX.Element {
-    if (!this.props.children || this.props.children.length < 1) {
-      return <React.Fragment />;
-    }
-
-    return (
-      <div
-        className="commandExpand"
-        tabIndex={0}
-        ref={(ref: HTMLElement) => {
-          this.expandButtonElt = ref;
-        }}
-        onKeyDown={(e: React.KeyboardEvent<HTMLDivElement>) => this.onLauncherKeyDown(e)}
-      >
-        <div className="commandDropdownLauncher">
-          <span className="partialSplitter" />
-          <span className="expandDropdown">
-            <img src={CollapseChevronDownIcon} />
-          </span>
-        </div>
-        <div
-          className="commandDropdownContainer"
-          ref={(ref: HTMLElement) => {
-            this.dropdownElt = ref;
-          }}
-        >
-          <div className="commandDropdown">
-            {this.props.children.map((c: CommandButtonComponentProps, index: number): JSX.Element => {
-              return CommandButtonComponent.renderButton(c, `${index}`);
-            })}
-          </div>
-        </div>
-      </div>
-    );
-  }
-
-  public static renderLabel(
-    props: CommandButtonComponentProps,
-    key?: string,
-    refct?: (input: HTMLElement) => void,
-  ): JSX.Element {
-    if (!props.commandButtonLabel) {
-      return <React.Fragment />;
-    }
-
-    return (
-      <span className="commandLabel" key={key} ref={refct}>
-        {props.commandButtonLabel}
-      </span>
-    );
-  }
-
-  public render(): JSX.Element {
-    let mainClassName = "commandButtonComponent";
-    if (this.props.disabled) {
-      mainClassName += " commandDisabled";
-    }
-    if (this.props.isSelected) {
-      mainClassName += " selectedButton";
-    }
-
-    let contentClassName = "commandContent";
-    if (this.props.children && this.props.children.length > 0) {
-      contentClassName += " hasHiddenItems";
-    }
-
-    return (
-      <div className="commandButtonReact">
-        <span
-          className={mainClassName}
-          role="menuitem"
-          tabIndex={this.props.tabIndex}
-          onKeyPress={(e: React.KeyboardEvent<HTMLSpanElement>) => this.onKeyPress(e)}
-          title={this.props.tooltipText}
-          id={this.getCommandButtonId()}
-          aria-disabled={this.props.disabled}
-          aria-haspopup={this.props.hasPopup}
-          aria-label={this.props.ariaLabel}
-          onClick={(e: React.MouseEvent<HTMLSpanElement>) => this.commandClickCallback(e)}
-        >
-          <div className={contentClassName}>
-            <img className="commandIcon" src={this.props.iconSrc} alt={this.props.iconAlt} />
-            {CommandButtonComponent.renderLabel(this.props)}
-          </div>
-        </span>
-        {this.props.children && this.renderChildren()}
-      </div>
-    );
-  }
-}

src/Explorer/Controls/Dialog.tsx

@@ -35,7 +35,7 @@ export interface DialogState {
     textFieldProps?: TextFieldProps,
     primaryButtonDisabled?: boolean,
   ) => void;
-  showOkModalDialog: (title: string, subText: string) => void;
+  showOkModalDialog: (title: string, subText: string, linkProps?: LinkProps) => void;
 }
 
 export const useDialog: UseStore<DialogState> = create((set, get) => ({
@@ -83,7 +83,7 @@ export const useDialog: UseStore<DialogState> = create((set, get) => ({
       textFieldProps,
       primaryButtonDisabled,
     }),
-  showOkModalDialog: (title: string, subText: string): void =>
+  showOkModalDialog: (title: string, subText: string, linkProps?: LinkProps): void =>
     get().openDialog({
       isModal: true,
       title,
@@ -94,6 +94,7 @@ export const useDialog: UseStore<DialogState> = create((set, get) => ({
         get().closeDialog();
       },
       onSecondaryButtonClick: undefined,
+      linkProps,
     }),
 }));
 

src/Explorer/Controls/Editor/EditorReact.tsx

@@ -3,6 +3,37 @@ import * as React from "react";
 import { loadMonaco, monaco } from "../../LazyMonaco";
 // import "./EditorReact.less";
 
+// In development, add a function to window to allow us to get the editor instance for a given element
+if (process.env.NODE_ENV === "development") {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const win = window as any;
+  win._monaco_getEditorForElement =
+    win._monaco_getEditorForElement ||
+    ((element: HTMLElement) => {
+      const editorId = element.dataset["monacoEditorId"];
+      if (!editorId || !win.__monaco_editors || typeof win.__monaco_editors !== "object") {
+        return null;
+      }
+      return win.__monaco_editors[editorId];
+    });
+
+  win._monaco_getEditorContentForElement =
+    win._monaco_getEditorContentForElement ||
+    ((element: HTMLElement) => {
+      const editor = win._monaco_getEditorForElement(element);
+      return editor ? editor.getValue() : null;
+    });
+
+  win._monaco_setEditorContentForElement =
+    win._monaco_setEditorContentForElement ||
+    ((element: HTMLElement, text: string) => {
+      const editor = win._monaco_getEditorForElement(element);
+      if (editor) {
+        editor.setValue(text);
+      }
+    });
+}
+
 interface EditorReactStates {
   showEditor: boolean;
 }
@@ -11,7 +42,7 @@ export interface EditorReactProps {
   content: string;
   isReadOnly: boolean;
   ariaLabel: string; // Sets what will be read to the user to define the control
-  onContentSelected?: (selectedContent: string) => void; // Called when text is selected
+  onContentSelected?: (selectedContent: string, selection: monaco.Selection) => void; // Called when text is selected
   onContentChanged?: (newContent: string) => void; // Called when text is changed
   theme?: string; // Monaco editor theme
   wordWrap?: monaco.editor.IEditorOptions["wordWrap"];
@@ -25,6 +56,7 @@ export interface EditorReactProps {
   className?: string;
   spinnerClassName?: string;
 
+  modelMarkers?: monaco.editor.IMarkerData[];
   enableWordWrapContextMenuItem?: boolean; // Enable/Disable "Word Wrap" context menu item
   onWordWrapChanged?: (wordWrap: "on" | "off") => void; // Called when word wrap is changed
 }
@@ -32,10 +64,25 @@ export interface EditorReactProps {
 export class EditorReact extends React.Component<EditorReactProps, EditorReactStates> {
   private static readonly VIEWING_OPTIONS_GROUP_ID = "viewingoptions"; // Group ID for the context menu group
   private rootNode: HTMLElement;
-  private editor: monaco.editor.IStandaloneCodeEditor;
+  public editor: monaco.editor.IStandaloneCodeEditor;
   private selectionListener: monaco.IDisposable;
-
-  private monacoEditorOptionsWordWrap: monaco.editor.EditorOption;
+  monacoApi: {
+    default: typeof monaco;
+    Emitter: typeof monaco.Emitter;
+    MarkerTag: typeof monaco.MarkerTag;
+    MarkerSeverity: typeof monaco.MarkerSeverity;
+    CancellationTokenSource: typeof monaco.CancellationTokenSource;
+    Uri: typeof monaco.Uri;
+    KeyCode: typeof monaco.KeyCode;
+    KeyMod: typeof monaco.KeyMod;
+    Position: typeof monaco.Position;
+    Range: typeof monaco.Range;
+    Selection: typeof monaco.Selection;
+    SelectionDirection: typeof monaco.SelectionDirection;
+    Token: typeof monaco.Token;
+    editor: typeof monaco.editor;
+    languages: typeof monaco.languages;
+  };
 
   public constructor(props: EditorReactProps) {
     super(props);
@@ -64,7 +111,7 @@ export class EditorReact extends React.Component<EditorReactProps, EditorReactSt
 
     if (this.props.content !== existingContent) {
       if (this.props.isReadOnly) {
-        this.editor.setValue(this.props.content);
+        this.editor.setValue(this.props.content || ""); // Monaco throws an error if you set the value to undefined.
       } else {
         this.editor.pushUndoStop();
         this.editor.executeEdits("", [
@@ -75,6 +122,8 @@ export class EditorReact extends React.Component<EditorReactProps, EditorReactSt
         ]);
       }
     }
+
+    this.monacoApi.editor.setModelMarkers(this.editor.getModel(), "owner", this.props.modelMarkers || []);
   }
 
   public componentWillUnmount(): void {
@@ -88,6 +137,7 @@ export class EditorReact extends React.Component<EditorReactProps, EditorReactSt
           <Spinner size={SpinnerSize.large} className={this.props.spinnerClassName || "spinner"} />
         )}
         <div
+          data-test="EditorReact/Host/Unloaded"
           className={this.props.className || "jsonEditor"}
           style={this.props.monacoContainerStyles}
           ref={(elt: HTMLElement) => this.setRef(elt)}
@@ -98,6 +148,18 @@ export class EditorReact extends React.Component<EditorReactProps, EditorReactSt
 
   protected configureEditor(editor: monaco.editor.IStandaloneCodeEditor) {
     this.editor = editor;
+    this.rootNode.dataset["test"] = "EditorReact/Host/Loaded";
+
+    // In development, we want to be able to access the editor instance from the console
+    if (process.env.NODE_ENV === "development") {
+      this.rootNode.dataset["monacoEditorId"] = this.editor.getId();
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      const win = window as any;
+
+      win["__monaco_editors"] = win["__monaco_editors"] || {};
+      win["__monaco_editors"][this.editor.getId()] = this.editor;
+    }
+
     if (!this.props.isReadOnly && this.props.onContentChanged) {
       // Hooking the model's onDidChangeContent event because of some event ordering issues.
       // If a single user input causes BOTH the editor content to change AND the cursor selection to change (which is likely),
@@ -115,7 +177,7 @@ export class EditorReact extends React.Component<EditorReactProps, EditorReactSt
       this.selectionListener = this.editor.onDidChangeCursorSelection(
         (event: monaco.editor.ICursorSelectionChangedEvent) => {
           const selectedContent: string = this.editor.getModel().getValueInRange(event.selection);
-          this.props.onContentSelected(selectedContent);
+          this.props.onContentSelected(selectedContent, event.selection);
         },
       );
     }
@@ -130,7 +192,7 @@ export class EditorReact extends React.Component<EditorReactProps, EditorReactSt
         // Method that will be executed when the action is triggered.
         // @param editor The editor instance is passed in as a convenience
         run: (ed) => {
-          const newOption = ed.getOption(this.monacoEditorOptionsWordWrap) === "on" ? "off" : "on";
+          const newOption = ed.getOption(this.monacoApi.editor.EditorOption.wordWrap) === "on" ? "off" : "on";
           ed.updateOptions({ wordWrap: newOption });
           this.props.onWordWrapChanged(newOption);
         },
@@ -156,16 +218,14 @@ export class EditorReact extends React.Component<EditorReactProps, EditorReactSt
       lineDecorationsWidth: this.props.lineDecorationsWidth,
       minimap: this.props.minimap,
       scrollBeyondLastLine: this.props.scrollBeyondLastLine,
+      fixedOverflowWidgets: true,
     };
 
     this.rootNode.innerHTML = "";
-    const lazymonaco = await loadMonaco();
-
-    // We can only get this constant after loading monaco lazily
-    this.monacoEditorOptionsWordWrap = lazymonaco.editor.EditorOption.wordWrap;
+    this.monacoApi = await loadMonaco();
 
     try {
-      createCallback(lazymonaco?.editor?.create(this.rootNode, options));
+      createCallback(this.monacoApi.editor.create(this.rootNode, options));
     } catch (error) {
       // This could happen if the parent node suddenly disappears during create()
       console.error("Unable to create EditorReact", error);

src/Explorer/Controls/IndeterminateProgressBar.tsx

@@ -0,0 +1,37 @@
+import { ProgressBar, makeStyles } from "@fluentui/react-components";
+import React from "react";
+
+const useStyles = makeStyles({
+  indeterminateProgressBarRoot: {
+    "@media screen and (prefers-reduced-motion: reduce)": {
+      animationIterationCount: "infinite",
+      animationDuration: "3s",
+      animationName: {
+        "0%": {
+          opacity: ".2", // matches indeterminate bar width
+        },
+        "50%": {
+          opacity: "1",
+        },
+        "100%": {
+          opacity: ".2",
+        },
+      },
+    },
+  },
+  indeterminateProgressBarBar: {
+    "@media screen and (prefers-reduced-motion: reduce)": {
+      maxWidth: "100%",
+    },
+  },
+});
+
+export const IndeterminateProgressBar: React.FC = () => {
+  const styles = useStyles();
+  return (
+    <ProgressBar
+      bar={{ className: styles.indeterminateProgressBarBar }}
+      className={styles.indeterminateProgressBarRoot}
+    />
+  );
+};

src/Explorer/Controls/MessageBanner.tsx

@@ -0,0 +1,68 @@
+import { Button, MessageBar, MessageBarActions, MessageBarBody } from "@fluentui/react-components";
+import { DismissRegular } from "@fluentui/react-icons";
+import React, { useState } from "react";
+
+export enum MessageBannerState {
+  /** The banner should be visible if the triggering conditions are met. */
+  Allowed = "allowed",
+
+  /** The banner has been dismissed by the user and will not be shown until the component is recreated, even if the visibility condition is true. */
+  Dismissed = "dismissed",
+
+  /** The banner has been supressed by the user and will not be shown at all, even if the visibility condition is true. */
+  Suppressed = "suppressed",
+}
+
+export type MessageBannerProps = {
+  /** A CSS class for the root MessageBar component */
+  className: string;
+
+  /** A unique ID for the message that will be used to store it's dismiss/suppress state across sessions. */
+  messageId: string;
+
+  /** The current visibility state for the banner IGNORING the user's dimiss/suppress preference
+   *
+   * If this value is true but the user has dismissed the banner, the banner will NOT be shown.
+   */
+  visible: boolean;
+};
+
+/** A component that shows a message banner which can be dismissed by the user.
+ *
+ * In the future, this can also support persisting the dismissed state in local storage without requiring changes to all the components that use it.
+ *
+ * A message banner can be in three "states":
+ * - Allowed: The banner should be visible if the triggering conditions are met.
+ * - Dismissed: The banner has been dismissed by the user and will not be shown until the component is recreated, even if the visibility condition is true.
+ * - Suppressed: The banner has been supressed by the user and will not be shown at all, even if the visibility condition is true.
+ *
+ * The "Dismissed" state represents the user clicking the "x" in the banner to dismiss it.
+ * The "Suppressed" state represents the user clicking "Don't show this again".
+ */
+export const MessageBanner: React.FC<MessageBannerProps> = ({ visible, className, children }) => {
+  const [state, setState] = useState<MessageBannerState>(MessageBannerState.Allowed);
+
+  if (state !== MessageBannerState.Allowed) {
+    return null;
+  }
+
+  if (!visible) {
+    return null;
+  }
+
+  return (
+    <MessageBar className={className}>
+      <MessageBarBody>{children}</MessageBarBody>
+      <MessageBarActions
+        containerAction={
+          <Button
+            aria-label="dismiss"
+            appearance="transparent"
+            icon={<DismissRegular />}
+            onClick={() => setState(MessageBannerState.Dismissed)}
+          />
+        }
+      ></MessageBarActions>
+    </MessageBar>
+  );
+};

src/Explorer/Controls/ProgressModalDialog.tsx

@@ -0,0 +1,79 @@
+import {
+  Button,
+  Dialog,
+  DialogActions,
+  DialogBody,
+  DialogContent,
+  DialogSurface,
+  DialogTitle,
+  DialogTrigger,
+  Field,
+  ProgressBar,
+} from "@fluentui/react-components";
+import * as React from "react";
+
+interface ProgressModalDialogProps {
+  isOpen: boolean;
+  title: string;
+  message: string;
+  maxValue: number;
+  value: number;
+  dismissText: string;
+  onDismiss: () => void;
+  onCancel?: () => void;
+  /* mode drives the state of the action buttons
+   * inProgress: Show cancel button
+   * completed: Show close button
+   * aborting: Show cancel button, but disabled
+   * aborted: Show close button
+   */
+  mode?: "inProgress" | "completed" | "aborting" | "aborted";
+}
+
+/**
+ * React component that renders a modal dialog with a progress bar.
+ */
+export const ProgressModalDialog: React.FC<ProgressModalDialogProps> = ({
+  isOpen,
+  title,
+  message,
+  maxValue,
+  value,
+  dismissText,
+  onCancel,
+  onDismiss,
+  children,
+  mode = "completed",
+}) => (
+  <Dialog
+    open={isOpen}
+    onOpenChange={(event, data) => {
+      if (!data.open) {
+        onDismiss();
+      }
+    }}
+  >
+    <DialogSurface>
+      <DialogBody>
+        <DialogTitle>{title}</DialogTitle>
+        <DialogContent>
+          <Field validationMessage={message} validationState="none">
+            <ProgressBar max={maxValue} value={value} />
+          </Field>
+          {children}
+        </DialogContent>
+        <DialogActions>
+          {mode === "inProgress" || mode === "aborting" ? (
+            <Button appearance="secondary" onClick={onCancel} disabled={mode === "aborting"}>
+              {dismissText}
+            </Button>
+          ) : (
+            <DialogTrigger disableButtonEnhancement>
+              <Button appearance="primary">Close</Button>
+            </DialogTrigger>
+          )}
+        </DialogActions>
+      </DialogBody>
+    </DialogSurface>
+  </Dialog>
+);

src/Explorer/Controls/Settings/SettingsComponent.test.tsx

@@ -134,7 +134,6 @@ describe("SettingsComponent", () => {
       readSettings: undefined,
       onSettingsClick: undefined,
       loadOffer: undefined,
-      getPendingThroughputSplitNotification: undefined,
     } as ViewModels.Database;
     newCollection.getDatabase = () => newDatabase;
     newCollection.offer = ko.observable(undefined);

src/Explorer/Controls/Settings/SettingsComponent.tsx

@@ -7,6 +7,7 @@ import {
   ContainerVectorPolicyComponent,
   ContainerVectorPolicyComponentProps,
 } from "Explorer/Controls/Settings/SettingsSubComponents/ContainerVectorPolicyComponent";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { useDatabases } from "Explorer/useDatabases";
 import { isVectorSearchEnabled } from "Utils/CapabilityUtils";
 import { isRunningOnPublicCloud } from "Utils/CloudUtils";
@@ -32,7 +33,6 @@ import {
   PartitionKeyComponent,
   PartitionKeyComponentProps,
 } from "../../Controls/Settings/SettingsSubComponents/PartitionKeyComponent";
-import { useCommandBar } from "../../Menus/CommandBar/CommandBarComponentAdapter";
 import { SettingsTabV2 } from "../../Tabs/SettingsTabV2";
 import "./SettingsComponent.less";
 import { mongoIndexingPolicyAADError } from "./SettingsRenderUtils";

src/Explorer/Controls/Settings/SettingsUtils.test.tsx

@@ -44,7 +44,6 @@ describe("SettingsUtils", () => {
         readSettings: undefined,
         onSettingsClick: undefined,
         loadOffer: undefined,
-        getPendingThroughputSplitNotification: undefined,
       } as ViewModels.Database;
     };
     newCollection.offer(undefined);

src/Explorer/Controls/TreeComponent/Styles.ts

@@ -17,7 +17,7 @@ export const useTreeStyles = makeStyles({
     minWidth: "100%",
     rowGap: "0px",
     paddingTop: "0px",
-    [treeIconWidth]: "20px",
+    [treeIconWidth]: "16px",
     [leafNodeSpacing]: "24px",
   },
   nodeIcon: {
@@ -25,12 +25,13 @@ export const useTreeStyles = makeStyles({
     height: `var(${treeIconWidth})`,
   },
   treeItem: {},
-  nodeLabel: {},
+  nodeLabel: {
+    whiteSpace: "nowrap", // Don't wrap text, there will be a scrollbar.
+  },
   treeItemLayout: {
     fontSize: tokens.fontSizeBase300,
     height: tokens.layoutRowHeight,
     ...cosmosShorthands.borderBottom(),
-    paddingLeft: `calc(var(${treeItemLevelToken}, 1) * ${tokens.spacingHorizontalXXL})`,
 
     // Some sneaky CSS variables stuff to change the background color of the action button on hover.
     [actionButtonBackground]: tokens.colorNeutralBackground1,

src/Explorer/Controls/TreeComponent/TreeNodeComponent.tsx

@@ -107,7 +107,7 @@ export const TreeNodeComponent: React.FC<TreeNodeComponentProps> = ({
 
   const onOpenChange = useCallback(
     (_: TreeOpenChangeEvent, data: TreeOpenChangeData) => {
-      if (data.type === "Click" && !isBranch && node.onClick) {
+      if (data.type === "Click" && node.onClick) {
         node.onClick();
       }
       if (!node.isExpanded && data.open && node.onExpanded) {
@@ -119,7 +119,7 @@ export const TreeNodeComponent: React.FC<TreeNodeComponentProps> = ({
         node.onCollapsed?.();
       }
     },
-    [isBranch, node, setIsLoading],
+    [node, setIsLoading],
   );
 
   const onMenuOpenChange = useCallback(
@@ -149,18 +149,19 @@ export const TreeNodeComponent: React.FC<TreeNodeComponentProps> = ({
 
   // We use the expandIcon slot to hold the node icon too.
   // We only show a node icon for leaf nodes, even if a branch node has an iconSrc.
-  const expandIcon = isLoading ? (
-    <Spinner size="extra-tiny" />
-  ) : !isBranch ? (
-    typeof node.iconSrc === "string" ? (
+  const treeIcon =
+    node.iconSrc === undefined ? undefined : typeof node.iconSrc === "string" ? (
       <img src={node.iconSrc} className={treeStyles.nodeIcon} alt="" />
     ) : (
       node.iconSrc
-    )
-  ) : openItems.includes(treeNodeId) ? (
-    <ChevronDown20Regular />
+    );
+
+  const expandIcon = isLoading ? (
+    <Spinner size="extra-tiny" />
+  ) : !isBranch ? undefined : openItems.includes(treeNodeId) ? (
+    <ChevronDown20Regular data-test="TreeNode/CollapseIcon" />
   ) : (
-    <ChevronRight20Regular />
+    <ChevronRight20Regular data-text="TreeNode/ExpandIcon" />
   );
 
   const treeItem = (
@@ -174,7 +175,6 @@ export const TreeNodeComponent: React.FC<TreeNodeComponentProps> = ({
       <TreeItemLayout
         className={mergeClasses(
           treeStyles.treeItemLayout,
-          expandIcon ? undefined : treeStyles.treeItemLayoutNoIcon,
           shouldShowAsSelected && treeStyles.selectedItem,
           node.className && treeStyles[node.className],
         )}
@@ -200,12 +200,13 @@ export const TreeNodeComponent: React.FC<TreeNodeComponentProps> = ({
             ),
           }
         }
+        iconBefore={treeIcon}
         expandIcon={expandIcon}
       >
         <span className={treeStyles.nodeLabel}>{node.label}</span>
       </TreeItemLayout>
       {!node.isLoading && node.children?.length > 0 && (
-        <Tree className={treeStyles.tree}>
+        <Tree data-test={`Tree:${treeNodeId}`} className={treeStyles.tree}>
           {getSortedChildren(node).map((childNode: TreeNode) => (
             <TreeNodeComponent
               openItems={openItems}

src/Explorer/Controls/TreeComponent/__snapshots__/TreeNodeComponent.test.tsx.snap

@@ -10,12 +10,23 @@ exports[`TreeNodeComponent does not render children if the node is loading 1`] =
 >
   <TreeItemLayout
     actions={false}
-    className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+    className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
     data-test="TreeNode:root"
-    expandIcon={<ChevronRight20Regular />}
+    expandIcon={
+      <ChevronRight20Regular
+        data-text="TreeNode/ExpandIcon"
+      />
+    }
+    iconBefore={
+      <img
+        alt=""
+        className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+        src="rootIcon"
+      />
+    }
   >
     <span
-      className=""
+      className="___1h29e9h_0000000 fz5stix"
     >
       rootLabel
     </span>
@@ -133,6 +144,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                 <svg
                   aria-hidden="true"
                   class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                  data-text="TreeNode/ExpandIcon"
                   fill="currentColor"
                   height="20"
                   viewBox="0 0 20 20"
@@ -151,7 +163,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
             "itemType": "branch",
             "layoutRef": {
               "current": <div
-                class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                class="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                 data-test="TreeNode:root"
               >
                 <div
@@ -161,6 +173,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                   <svg
                     aria-hidden="true"
                     class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                    data-text="TreeNode/ExpandIcon"
                     fill="currentColor"
                     height="20"
                     viewBox="0 0 20 20"
@@ -173,11 +186,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                     />
                   </svg>
                 </div>
+                <div
+                  aria-hidden="true"
+                  class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                >
+                  <img
+                    alt=""
+                    class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                    src="rootIcon"
+                  />
+                </div>
                 <div
                   class="fui-TreeItemLayout__main rklbe47"
                 >
                   <span
-                    class=""
+                    class="___1h29e9h_0000000 fz5stix"
                   >
                     rootLabel
                   </span>
@@ -202,7 +225,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                 tabindex="-1"
               >
                 <div
-                  class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                  class="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                   data-test="TreeNode:root"
                 >
                   <div
@@ -212,6 +235,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                     <svg
                       aria-hidden="true"
                       class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                      data-text="TreeNode/ExpandIcon"
                       fill="currentColor"
                       height="20"
                       viewBox="0 0 20 20"
@@ -224,18 +248,29 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                       />
                     </svg>
                   </div>
+                  <div
+                    aria-hidden="true"
+                    class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                  >
+                    <img
+                      alt=""
+                      class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                      src="rootIcon"
+                    />
+                  </div>
                   <div
                     class="fui-TreeItemLayout__main rklbe47"
                   >
                     <span
-                      class=""
+                      class="___1h29e9h_0000000 fz5stix"
                     >
                       rootLabel
                     </span>
                   </div>
                 </div>
                 <div
-                  class="fui-Tree rnv2ez3 ___jy13a00_lpffjy0 f1acs6jw f11qra4b fepn2xe f1nbblvp fhxm7u5 fzz4f4n"
+                  class="fui-Tree rnv2ez3 ___17a32do_7zrvj80 f1acs6jw f11qra4b fepn2xe f1nbblvp f19d5ny4 fzz4f4n"
+                  data-test="Tree:root"
                   role="tree"
                 >
                   <div
@@ -248,7 +283,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                     tabindex="0"
                   >
                     <div
-                      class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                      class="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                       data-test="TreeNode:root/child1Label"
                     >
                       <div
@@ -258,6 +293,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                         <svg
                           aria-hidden="true"
                           class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                          data-text="TreeNode/ExpandIcon"
                           fill="currentColor"
                           height="20"
                           viewBox="0 0 20 20"
@@ -270,11 +306,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                           />
                         </svg>
                       </div>
+                      <div
+                        aria-hidden="true"
+                        class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                      >
+                        <img
+                          alt=""
+                          class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                          src="child1Icon"
+                        />
+                      </div>
                       <div
                         class="fui-TreeItemLayout__main rklbe47"
                       >
                         <span
-                          class=""
+                          class="___1h29e9h_0000000 fz5stix"
                         >
                           child1Label
                         </span>
@@ -291,7 +337,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                     tabindex="-1"
                   >
                     <div
-                      class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                      class="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                       data-test="TreeNode:root/child2LoadingLabel"
                     >
                       <div
@@ -301,6 +347,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                         <svg
                           aria-hidden="true"
                           class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                          data-text="TreeNode/ExpandIcon"
                           fill="currentColor"
                           height="20"
                           viewBox="0 0 20 20"
@@ -313,11 +360,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                           />
                         </svg>
                       </div>
+                      <div
+                        aria-hidden="true"
+                        class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                      >
+                        <img
+                          alt=""
+                          class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                          src="child2LoadingIcon"
+                        />
+                      </div>
                       <div
                         class="fui-TreeItemLayout__main rklbe47"
                       >
                         <span
-                          class=""
+                          class="___1h29e9h_0000000 fz5stix"
                         >
                           child2LoadingLabel
                         </span>
@@ -333,7 +390,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                     tabindex="-1"
                   >
                     <div
-                      class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vrg09j fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                      class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_vz3p260 fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                       data-test="TreeNode:root/child3ExpandingLabel"
                     >
                       <div
@@ -353,11 +410,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                           </span>
                         </div>
                       </div>
+                      <div
+                        aria-hidden="true"
+                        class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                      >
+                        <img
+                          alt=""
+                          class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                          src="child3ExpandingIcon"
+                        />
+                      </div>
                       <div
                         class="fui-TreeItemLayout__main rklbe47"
                       >
                         <span
-                          class=""
+                          class="___1h29e9h_0000000 fz5stix"
                         >
                           child3ExpandingLabel
                         </span>
@@ -373,22 +440,36 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
       >
         <TreeItemLayout
           actions={false}
-          className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+          className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
           data-test="TreeNode:root"
-          expandIcon={<ChevronRight20Regular />}
+          expandIcon={
+            <ChevronRight20Regular
+              data-text="TreeNode/ExpandIcon"
+            />
+          }
+          iconBefore={
+            <img
+              alt=""
+              className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+              src="rootIcon"
+            />
+          }
         >
           <div
-            className="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+            className="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
             data-test="TreeNode:root"
           >
             <div
               aria-hidden={true}
               className="fui-TreeItemLayout__expandIcon rh4pu5o"
             >
-              <ChevronRight20Regular>
+              <ChevronRight20Regular
+                data-text="TreeNode/ExpandIcon"
+              >
                 <svg
                   aria-hidden={true}
                   className="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                  data-text="TreeNode/ExpandIcon"
                   fill="currentColor"
                   height="20"
                   viewBox="0 0 20 20"
@@ -402,11 +483,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                 </svg>
               </ChevronRight20Regular>
             </div>
+            <div
+              aria-hidden={true}
+              className="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+            >
+              <img
+                alt=""
+                className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                src="rootIcon"
+              />
+            </div>
             <div
               className="fui-TreeItemLayout__main rklbe47"
             >
               <span
-                className=""
+                className="___1h29e9h_0000000 fz5stix"
               >
                 rootLabel
               </span>
@@ -414,7 +505,8 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
           </div>
         </TreeItemLayout>
         <Tree
-          className="___jy13a00_0000000 f1acs6jw f11qra4b fepn2xe f1nbblvp fhxm7u5 fzz4f4n"
+          className="___17a32do_0000000 f1acs6jw f11qra4b fepn2xe f1nbblvp f19d5ny4 fzz4f4n"
+          data-test="Tree:root"
         >
           <TreeProvider
             value={
@@ -481,7 +573,8 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
               }
             >
               <div
-                className="fui-Tree rnv2ez3 ___jy13a00_lpffjy0 f1acs6jw f11qra4b fepn2xe f1nbblvp fhxm7u5 fzz4f4n"
+                className="fui-Tree rnv2ez3 ___17a32do_7zrvj80 f1acs6jw f11qra4b fepn2xe f1nbblvp f19d5ny4 fzz4f4n"
+                data-test="Tree:root"
                 role="tree"
               >
                 <TreeNodeComponent
@@ -549,6 +642,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                 <svg
                                   aria-hidden="true"
                                   class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                                  data-text="TreeNode/ExpandIcon"
                                   fill="currentColor"
                                   height="20"
                                   viewBox="0 0 20 20"
@@ -567,7 +661,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                             "itemType": "branch",
                             "layoutRef": {
                               "current": <div
-                                class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                                class="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                                 data-test="TreeNode:root/child1Label"
                               >
                                 <div
@@ -577,6 +671,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                   <svg
                                     aria-hidden="true"
                                     class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                                    data-text="TreeNode/ExpandIcon"
                                     fill="currentColor"
                                     height="20"
                                     viewBox="0 0 20 20"
@@ -589,11 +684,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                     />
                                   </svg>
                                 </div>
+                                <div
+                                  aria-hidden="true"
+                                  class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                                >
+                                  <img
+                                    alt=""
+                                    class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                                    src="child1Icon"
+                                  />
+                                </div>
                                 <div
                                   class="fui-TreeItemLayout__main rklbe47"
                                 >
                                   <span
-                                    class=""
+                                    class="___1h29e9h_0000000 fz5stix"
                                   >
                                     child1Label
                                   </span>
@@ -618,7 +723,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                 tabindex="0"
                               >
                                 <div
-                                  class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                                  class="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                                   data-test="TreeNode:root/child1Label"
                                 >
                                   <div
@@ -628,6 +733,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                     <svg
                                       aria-hidden="true"
                                       class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                                      data-text="TreeNode/ExpandIcon"
                                       fill="currentColor"
                                       height="20"
                                       viewBox="0 0 20 20"
@@ -640,11 +746,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                       />
                                     </svg>
                                   </div>
+                                  <div
+                                    aria-hidden="true"
+                                    class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                                  >
+                                    <img
+                                      alt=""
+                                      class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                                      src="child1Icon"
+                                    />
+                                  </div>
                                   <div
                                     class="fui-TreeItemLayout__main rklbe47"
                                   >
                                     <span
-                                      class=""
+                                      class="___1h29e9h_0000000 fz5stix"
                                     >
                                       child1Label
                                     </span>
@@ -658,22 +774,36 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                       >
                         <TreeItemLayout
                           actions={false}
-                          className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+                          className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                           data-test="TreeNode:root/child1Label"
-                          expandIcon={<ChevronRight20Regular />}
+                          expandIcon={
+                            <ChevronRight20Regular
+                              data-text="TreeNode/ExpandIcon"
+                            />
+                          }
+                          iconBefore={
+                            <img
+                              alt=""
+                              className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                              src="child1Icon"
+                            />
+                          }
                         >
                           <div
-                            className="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                            className="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                             data-test="TreeNode:root/child1Label"
                           >
                             <div
                               aria-hidden={true}
                               className="fui-TreeItemLayout__expandIcon rh4pu5o"
                             >
-                              <ChevronRight20Regular>
+                              <ChevronRight20Regular
+                                data-text="TreeNode/ExpandIcon"
+                              >
                                 <svg
                                   aria-hidden={true}
                                   className="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                                  data-text="TreeNode/ExpandIcon"
                                   fill="currentColor"
                                   height="20"
                                   viewBox="0 0 20 20"
@@ -687,11 +817,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                 </svg>
                               </ChevronRight20Regular>
                             </div>
+                            <div
+                              aria-hidden={true}
+                              className="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                            >
+                              <img
+                                alt=""
+                                className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                                src="child1Icon"
+                              />
+                            </div>
                             <div
                               className="fui-TreeItemLayout__main rklbe47"
                             >
                               <span
-                                className=""
+                                className="___1h29e9h_0000000 fz5stix"
                               >
                                 child1Label
                               </span>
@@ -699,7 +839,8 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                           </div>
                         </TreeItemLayout>
                         <Tree
-                          className="___jy13a00_0000000 f1acs6jw f11qra4b fepn2xe f1nbblvp fhxm7u5 fzz4f4n"
+                          className="___17a32do_0000000 f1acs6jw f11qra4b fepn2xe f1nbblvp f19d5ny4 fzz4f4n"
+                          data-test="Tree:root/child1Label"
                         >
                           <TreeProvider
                             value={
@@ -772,6 +913,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                 <svg
                                   aria-hidden="true"
                                   class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                                  data-text="TreeNode/ExpandIcon"
                                   fill="currentColor"
                                   height="20"
                                   viewBox="0 0 20 20"
@@ -790,7 +932,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                             "itemType": "branch",
                             "layoutRef": {
                               "current": <div
-                                class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                                class="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                                 data-test="TreeNode:root/child2LoadingLabel"
                               >
                                 <div
@@ -800,6 +942,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                   <svg
                                     aria-hidden="true"
                                     class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                                    data-text="TreeNode/ExpandIcon"
                                     fill="currentColor"
                                     height="20"
                                     viewBox="0 0 20 20"
@@ -812,11 +955,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                     />
                                   </svg>
                                 </div>
+                                <div
+                                  aria-hidden="true"
+                                  class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                                >
+                                  <img
+                                    alt=""
+                                    class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                                    src="child2LoadingIcon"
+                                  />
+                                </div>
                                 <div
                                   class="fui-TreeItemLayout__main rklbe47"
                                 >
                                   <span
-                                    class=""
+                                    class="___1h29e9h_0000000 fz5stix"
                                   >
                                     child2LoadingLabel
                                   </span>
@@ -841,7 +994,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                 tabindex="-1"
                               >
                                 <div
-                                  class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                                  class="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                                   data-test="TreeNode:root/child2LoadingLabel"
                                 >
                                   <div
@@ -851,6 +1004,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                     <svg
                                       aria-hidden="true"
                                       class="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                                      data-text="TreeNode/ExpandIcon"
                                       fill="currentColor"
                                       height="20"
                                       viewBox="0 0 20 20"
@@ -863,11 +1017,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                       />
                                     </svg>
                                   </div>
+                                  <div
+                                    aria-hidden="true"
+                                    class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                                  >
+                                    <img
+                                      alt=""
+                                      class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                                      src="child2LoadingIcon"
+                                    />
+                                  </div>
                                   <div
                                     class="fui-TreeItemLayout__main rklbe47"
                                   >
                                     <span
-                                      class=""
+                                      class="___1h29e9h_0000000 fz5stix"
                                     >
                                       child2LoadingLabel
                                     </span>
@@ -881,22 +1045,36 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                       >
                         <TreeItemLayout
                           actions={false}
-                          className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+                          className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                           data-test="TreeNode:root/child2LoadingLabel"
-                          expandIcon={<ChevronRight20Regular />}
+                          expandIcon={
+                            <ChevronRight20Regular
+                              data-text="TreeNode/ExpandIcon"
+                            />
+                          }
+                          iconBefore={
+                            <img
+                              alt=""
+                              className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                              src="child2LoadingIcon"
+                            />
+                          }
                         >
                           <div
-                            className="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vtp8mg fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                            className="fui-TreeItemLayout r1bx0xiv ___9uolwu0_9b0r4g0 fk6fouc fkhj508 figsok6 f1i3iumi fo100m9 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                             data-test="TreeNode:root/child2LoadingLabel"
                           >
                             <div
                               aria-hidden={true}
                               className="fui-TreeItemLayout__expandIcon rh4pu5o"
                             >
-                              <ChevronRight20Regular>
+                              <ChevronRight20Regular
+                                data-text="TreeNode/ExpandIcon"
+                              >
                                 <svg
                                   aria-hidden={true}
                                   className="___12fm75w_v8ls9a0 f1w7gpdv fez10in fg4l7m0"
+                                  data-text="TreeNode/ExpandIcon"
                                   fill="currentColor"
                                   height="20"
                                   viewBox="0 0 20 20"
@@ -910,11 +1088,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                 </svg>
                               </ChevronRight20Regular>
                             </div>
+                            <div
+                              aria-hidden={true}
+                              className="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                            >
+                              <img
+                                alt=""
+                                className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                                src="child2LoadingIcon"
+                              />
+                            </div>
                             <div
                               className="fui-TreeItemLayout__main rklbe47"
                             >
                               <span
-                                className=""
+                                className="___1h29e9h_0000000 fz5stix"
                               >
                                 child2LoadingLabel
                               </span>
@@ -999,7 +1187,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                             "itemType": "leaf",
                             "layoutRef": {
                               "current": <div
-                                class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vrg09j fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                                class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_vz3p260 fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                                 data-test="TreeNode:root/child3ExpandingLabel"
                               >
                                 <div
@@ -1019,11 +1207,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                     </span>
                                   </div>
                                 </div>
+                                <div
+                                  aria-hidden="true"
+                                  class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                                >
+                                  <img
+                                    alt=""
+                                    class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                                    src="child3ExpandingIcon"
+                                  />
+                                </div>
                                 <div
                                   class="fui-TreeItemLayout__main rklbe47"
                                 >
                                   <span
-                                    class=""
+                                    class="___1h29e9h_0000000 fz5stix"
                                   >
                                     child3ExpandingLabel
                                   </span>
@@ -1047,7 +1245,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                 tabindex="-1"
                               >
                                 <div
-                                  class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vrg09j fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                                  class="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_vz3p260 fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                                   data-test="TreeNode:root/child3ExpandingLabel"
                                 >
                                   <div
@@ -1067,11 +1265,21 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                                       </span>
                                     </div>
                                   </div>
+                                  <div
+                                    aria-hidden="true"
+                                    class="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
+                                  >
+                                    <img
+                                      alt=""
+                                      class="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+                                      src="child3ExpandingIcon"
+                                    />
+                                  </div>
                                   <div
                                     class="fui-TreeItemLayout__main rklbe47"
                                   >
                                     <span
-                                      class=""
+                                      class="___1h29e9h_0000000 fz5stix"
                                     >
                                       child3ExpandingLabel
                                     </span>
@@ -1085,9 +1293,9 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                       >
                         <TreeItemLayout
                           actions={false}
-                          className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+                          className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                           data-test="TreeNode:root/child3ExpandingLabel"
-                          expandIcon={
+                          iconBefore={
                             <img
                               alt=""
                               className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
@@ -1096,12 +1304,12 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                           }
                         >
                           <div
-                            className="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_1vrg09j fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
+                            className="fui-TreeItemLayout r1bx0xiv ___dxcrnh0_vz3p260 fk6fouc fkhj508 figsok6 f1i3iumi f1k1erfc fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
                             data-test="TreeNode:root/child3ExpandingLabel"
                           >
                             <div
                               aria-hidden={true}
-                              className="fui-TreeItemLayout__expandIcon rh4pu5o"
+                              className="fui-TreeItemLayout__iconBefore rphzgg1 ___1lqnc2u_1hdcey2 f7x41pl"
                             >
                               <img
                                 alt=""
@@ -1113,7 +1321,7 @@ exports[`TreeNodeComponent fully renders a tree 1`] = `
                               className="fui-TreeItemLayout__main rklbe47"
                             >
                               <span
-                                className=""
+                                className="___1h29e9h_0000000 fz5stix"
                               >
                                 child3ExpandingLabel
                               </span>
@@ -1144,9 +1352,9 @@ exports[`TreeNodeComponent renders a loading spinner if the node is loading: loa
 >
   <TreeItemLayout
     actions={false}
-    className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+    className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
     data-test="TreeNode:root"
-    expandIcon={
+    iconBefore={
       <img
         alt=""
         className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
@@ -1155,7 +1363,7 @@ exports[`TreeNodeComponent renders a loading spinner if the node is loading: loa
     }
   >
     <span
-      className=""
+      className="___1h29e9h_0000000 fz5stix"
     >
       rootLabel
     </span>
@@ -1173,16 +1381,23 @@ exports[`TreeNodeComponent renders a loading spinner if the node is loading: loa
 >
   <TreeItemLayout
     actions={false}
-    className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+    className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
     data-test="TreeNode:root"
     expandIcon={
       <Spinner
         size="extra-tiny"
       />
     }
+    iconBefore={
+      <img
+        alt=""
+        className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+        src="rootIcon"
+      />
+    }
   >
     <span
-      className=""
+      className="___1h29e9h_0000000 fz5stix"
     >
       rootLabel
     </span>
@@ -1200,12 +1415,23 @@ exports[`TreeNodeComponent renders a node as expandable if it has empty, but def
 >
   <TreeItemLayout
     actions={false}
-    className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+    className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
     data-test="TreeNode:root"
-    expandIcon={<ChevronRight20Regular />}
+    expandIcon={
+      <ChevronRight20Regular
+        data-text="TreeNode/ExpandIcon"
+      />
+    }
+    iconBefore={
+      <img
+        alt=""
+        className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+        src="rootIcon"
+      />
+    }
   >
     <span
-      className=""
+      className="___1h29e9h_0000000 fz5stix"
     >
       rootLabel
     </span>
@@ -1269,9 +1495,9 @@ exports[`TreeNodeComponent renders a node with a menu 1`] = `
             "className": "___1r8p62d_0000000 f1xg1ack f1e31b4d",
           }
         }
-        className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+        className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
         data-test="TreeNode:root"
-        expandIcon={
+        iconBefore={
           <img
             alt=""
             className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
@@ -1280,7 +1506,7 @@ exports[`TreeNodeComponent renders a node with a menu 1`] = `
         }
       >
         <span
-          className=""
+          className="___1h29e9h_0000000 fz5stix"
         >
           rootLabel
         </span>
@@ -1319,9 +1545,9 @@ exports[`TreeNodeComponent renders a single node 1`] = `
 >
   <TreeItemLayout
     actions={false}
-    className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+    className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
     data-test="TreeNode:root"
-    expandIcon={
+    iconBefore={
       <img
         alt=""
         className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
@@ -1330,7 +1556,7 @@ exports[`TreeNodeComponent renders a single node 1`] = `
     }
   >
     <span
-      className=""
+      className="___1h29e9h_0000000 fz5stix"
     >
       rootLabel
     </span>
@@ -1348,9 +1574,9 @@ exports[`TreeNodeComponent renders an icon if the node has one 1`] = `
 >
   <TreeItemLayout
     actions={false}
-    className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+    className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
     data-test="TreeNode:root"
-    expandIcon={
+    iconBefore={
       <img
         alt=""
         className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
@@ -1359,7 +1585,7 @@ exports[`TreeNodeComponent renders an icon if the node has one 1`] = `
     }
   >
     <span
-      className=""
+      className="___1h29e9h_0000000 fz5stix"
     >
       rootLabel
     </span>
@@ -1377,18 +1603,30 @@ exports[`TreeNodeComponent renders selected parent node as selected if no descen
 >
   <TreeItemLayout
     actions={false}
-    className="___kqkdor0_ihxn0o0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1nfm20t f1do9gdl"
+    className="___rq9vxg0_1ykn2d2 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1nfm20t f1do9gdl"
     data-test="TreeNode:root"
-    expandIcon={<ChevronRight20Regular />}
+    expandIcon={
+      <ChevronRight20Regular
+        data-text="TreeNode/ExpandIcon"
+      />
+    }
+    iconBefore={
+      <img
+        alt=""
+        className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+        src="rootIcon"
+      />
+    }
   >
     <span
-      className=""
+      className="___1h29e9h_0000000 fz5stix"
     >
       rootLabel
     </span>
   </TreeItemLayout>
   <Tree
-    className="___jy13a00_0000000 f1acs6jw f11qra4b fepn2xe f1nbblvp fhxm7u5 fzz4f4n"
+    className="___17a32do_0000000 f1acs6jw f11qra4b fepn2xe f1nbblvp f19d5ny4 fzz4f4n"
+    data-test="Tree:root"
   >
     <TreeNodeComponent
       key="child1Label"
@@ -1448,18 +1686,30 @@ exports[`TreeNodeComponent renders selected parent node as unselected if any des
 >
   <TreeItemLayout
     actions={false}
-    className="___1kqyw53_iy2icj0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1do9gdl"
+    className="___z7owk70_14ep1pe fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1do9gdl"
     data-test="TreeNode:root"
-    expandIcon={<ChevronRight20Regular />}
+    expandIcon={
+      <ChevronRight20Regular
+        data-text="TreeNode/ExpandIcon"
+      />
+    }
+    iconBefore={
+      <img
+        alt=""
+        className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
+        src="rootIcon"
+      />
+    }
   >
     <span
-      className=""
+      className="___1h29e9h_0000000 fz5stix"
     >
       rootLabel
     </span>
   </TreeItemLayout>
   <Tree
-    className="___jy13a00_0000000 f1acs6jw f11qra4b fepn2xe f1nbblvp fhxm7u5 fzz4f4n"
+    className="___17a32do_0000000 f1acs6jw f11qra4b fepn2xe f1nbblvp f19d5ny4 fzz4f4n"
+    data-test="Tree:root"
   >
     <TreeNodeComponent
       key="child1Label"
@@ -1520,9 +1770,9 @@ exports[`TreeNodeComponent renders single selected leaf node as selected 1`] = `
 >
   <TreeItemLayout
     actions={false}
-    className="___kqkdor0_ihxn0o0 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1k1erfc f1n8cmsf f1ktbui8 f1nfm20t f1do9gdl"
+    className="___rq9vxg0_1ykn2d2 fkhj508 fbv8p0b f1f09k3d fg706s2 frpde29 f1n8cmsf f1ktbui8 f1nfm20t f1do9gdl"
     data-test="TreeNode:root"
-    expandIcon={
+    iconBefore={
       <img
         alt=""
         className="___i3nbrx0_0000000 f1do9gdl fbv8p0b"
@@ -1531,7 +1781,7 @@ exports[`TreeNodeComponent renders single selected leaf node as selected 1`] = `
     }
   >
     <span
-      className=""
+      className="___1h29e9h_0000000 fz5stix"
     >
       rootLabel
     </span>

src/Explorer/Explorer.tsx

@@ -1,9 +1,11 @@
 import * as msal from "@azure/msal-browser";
 import { Link } from "@fluentui/react/lib/Link";
 import { isPublicInternetAccessAllowed } from "Common/DatabaseAccountUtility";
+import { Environment, getEnvironment } from "Common/EnvironmentUtility";
 import { sendMessage } from "Common/MessageHandler";
 import { Platform, configContext } from "ConfigContext";
 import { MessageTypes } from "Contracts/ExplorerContracts";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { useDataPlaneRbac } from "Explorer/Panes/SettingsPane/SettingsPane";
 import { getCopilotEnabled, isCopilotFeatureRegistered } from "Explorer/QueryCopilot/Shared/QueryCopilotClient";
 import { IGalleryItem } from "Juno/JunoClient";
@@ -46,7 +48,6 @@ import { useTabs } from "../hooks/useTabs";
 import "./ComponentRegisterer";
 import { DialogProps, useDialog } from "./Controls/Dialog";
 import { GalleryTab as GalleryTabKind } from "./Controls/NotebookGallery/GalleryViewerComponent";
-import { useCommandBar } from "./Menus/CommandBar/CommandBarComponentAdapter";
 import * as FileSystemUtil from "./Notebook/FileSystemUtil";
 import { SnapshotRequest } from "./Notebook/NotebookComponent/types";
 import { NotebookContentItem, NotebookContentItemType } from "./Notebook/NotebookContentItem";
@@ -1119,7 +1120,7 @@ export default class Explorer {
     }
   }
 
-  public openUploadItemsPanePane(): void {
+  public openUploadItemsPane(): void {
     useSidePanel.getState().openSidePanel("Upload " + getUploadName(), <UploadItemsPane />);
   }
   public openExecuteSprocParamsPanel(storedProcedure: StoredProcedure): void {
@@ -1178,7 +1179,11 @@ export default class Explorer {
   }
 
   public async configureCopilot(): Promise<void> {
-    if (userContext.apiType !== "SQL" || !userContext.subscriptionId) {
+    if (
+      userContext.apiType !== "SQL" ||
+      !userContext.subscriptionId ||
+      ![Environment.Development, Environment.Mpac, Environment.Prod].includes(getEnvironment())
+    ) {
       return;
     }
     const copilotEnabledPromise = getCopilotEnabled();

src/Explorer/Menus/CommandBar/CommandBarComponentAdapter.tsx

@@ -4,83 +4,51 @@
  * and update any knockout observables passed from the parent.
  */
 import { CommandBar as FluentCommandBar, ICommandBarItemProps } from "@fluentui/react";
+import {
+  createPlatformButtons,
+  createStaticCommandBarButtons,
+} from "Explorer/Menus/CommandBar/CommandBarComponentButtonFactory";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { useNotebook } from "Explorer/Notebook/useNotebook";
 import { KeyboardActionGroup, useKeyboardActionGroup } from "KeyboardShortcuts";
-import { userContext } from "UserContext";
 import * as React from "react";
-import create, { UseStore } from "zustand";
 import { ConnectionStatusType, PoolIdType } from "../../../Common/Constants";
 import { StyleConstants } from "../../../Common/StyleConstants";
 import { Platform, configContext } from "../../../ConfigContext";
-import { CommandButtonComponentProps } from "../../Controls/CommandButton/CommandButtonComponent";
 import Explorer from "../../Explorer";
 import { useSelectedNode } from "../../useSelectedNode";
-import * as CommandBarComponentButtonFactory from "./CommandBarComponentButtonFactory";
 import * as CommandBarUtil from "./CommandBarUtil";
 
 interface Props {
   container: Explorer;
 }
 
-export interface CommandBarStore {
-  contextButtons: CommandButtonComponentProps[];
-  setContextButtons: (contextButtons: CommandButtonComponentProps[]) => void;
-  isHidden: boolean;
-  setIsHidden: (isHidden: boolean) => void;
-}
-
-export const useCommandBar: UseStore<CommandBarStore> = create((set) => ({
-  contextButtons: [],
-  setContextButtons: (contextButtons: CommandButtonComponentProps[]) => set((state) => ({ ...state, contextButtons })),
-  isHidden: false,
-  setIsHidden: (isHidden: boolean) => set((state) => ({ ...state, isHidden })),
-}));
-
 export const CommandBar: React.FC<Props> = ({ container }: Props) => {
   const selectedNodeState = useSelectedNode();
-  const buttons = useCommandBar((state) => state.contextButtons);
+  const contextButtons = useCommandBar((state) => state.contextButtons);
   const isHidden = useCommandBar((state) => state.isHidden);
   const backgroundColor = StyleConstants.BaseLight;
   const setKeyboardHandlers = useKeyboardActionGroup(KeyboardActionGroup.COMMAND_BAR);
+  const staticButtons = createStaticCommandBarButtons(selectedNodeState);
+  const platformButtons = createPlatformButtons();
 
-  if (userContext.apiType === "Postgres" || userContext.apiType === "VCoreMongo") {
-    const buttons =
-      userContext.apiType === "Postgres"
-        ? CommandBarComponentButtonFactory.createPostgreButtons(container)
-        : CommandBarComponentButtonFactory.createVCoreMongoButtons(container);
-    return (
-      <div className="commandBarContainer" style={{ display: isHidden ? "none" : "initial" }}>
-        <FluentCommandBar
-          ariaLabel="Use left and right arrow keys to navigate between commands"
-          items={CommandBarUtil.convertButton(buttons, backgroundColor)}
-          styles={{
-            root: { backgroundColor: backgroundColor },
-          }}
-          overflowButtonProps={{ ariaLabel: "More commands" }}
-        />
-      </div>
-    );
-  }
-
-  const staticButtons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(container, selectedNodeState);
-  const contextButtons = (buttons || []).concat(
-    CommandBarComponentButtonFactory.createContextCommandBarButtons(container, selectedNodeState),
-  );
-  const controlButtons = CommandBarComponentButtonFactory.createControlCommandBarButtons(container);
-
-  const uiFabricStaticButtons = CommandBarUtil.convertButton(staticButtons, backgroundColor);
-  if (buttons && buttons.length > 0) {
+  const uiFabricStaticButtons = CommandBarUtil.convertButton(staticButtons, backgroundColor, container);
+  if (contextButtons?.length > 0) {
     uiFabricStaticButtons.forEach((btn: ICommandBarItemProps) => (btn.iconOnly = true));
   }
 
-  const uiFabricTabsButtons: ICommandBarItemProps[] = CommandBarUtil.convertButton(contextButtons, backgroundColor);
+  const uiFabricTabsButtons: ICommandBarItemProps[] = CommandBarUtil.convertButton(
+    contextButtons || [],
+    backgroundColor,
+    container,
+  );
 
   if (uiFabricTabsButtons.length > 0) {
     uiFabricStaticButtons.push(CommandBarUtil.createDivider("commandBarDivider"));
   }
 
-  const uiFabricControlButtons = CommandBarUtil.convertButton(controlButtons, backgroundColor);
-  uiFabricControlButtons.forEach((btn: ICommandBarItemProps) => (btn.iconOnly = true));
+  const uiFabricPlatformButtons = CommandBarUtil.convertButton(platformButtons || [], backgroundColor, container);
+  uiFabricPlatformButtons.forEach((btn: ICommandBarItemProps) => (btn.iconOnly = true));
 
   const connectionInfo = useNotebook((state) => state.connectionInfo);
 
@@ -88,7 +56,7 @@ export const CommandBar: React.FC<Props> = ({ container }: Props) => {
     (useNotebook.getState().isPhoenixNotebooks || useNotebook.getState().isPhoenixFeatures) &&
     connectionInfo?.status !== ConnectionStatusType.Connect
   ) {
-    uiFabricControlButtons.unshift(
+    uiFabricPlatformButtons.unshift(
       CommandBarUtil.createConnectionStatus(container, PoolIdType.DefaultPoolId, "connectionStatus"),
     );
   }
@@ -107,8 +75,8 @@ export const CommandBar: React.FC<Props> = ({ container }: Props) => {
           },
         };
 
-  const allButtons = staticButtons.concat(contextButtons).concat(controlButtons);
-  const keyboardHandlers = CommandBarUtil.createKeyboardHandlers(allButtons);
+  const allButtons = staticButtons.concat(contextButtons).concat(platformButtons);
+  const keyboardHandlers = CommandBarUtil.createKeyboardHandlers(allButtons, container);
   setKeyboardHandlers(keyboardHandlers);
 
   return (
@@ -116,7 +84,7 @@ export const CommandBar: React.FC<Props> = ({ container }: Props) => {
       <FluentCommandBar
         ariaLabel="Use left and right arrow keys to navigate between commands"
         items={uiFabricStaticButtons.concat(uiFabricTabsButtons)}
-        farItems={uiFabricControlButtons}
+        farItems={uiFabricPlatformButtons}
         styles={rootStyle}
         overflowButtonProps={{ ariaLabel: "More commands" }}
       />

src/Explorer/Menus/CommandBar/CommandBarComponentButtonFactory.test.ts

@@ -3,15 +3,12 @@ import { AuthType } from "../../../AuthType";
 import { DatabaseAccount } from "../../../Contracts/DataModels";
 import { CollectionBase } from "../../../Contracts/ViewModels";
 import { updateUserContext } from "../../../UserContext";
-import Explorer from "../../Explorer";
 import { useNotebook } from "../../Notebook/useNotebook";
 import { useDatabases } from "../../useDatabases";
 import { useSelectedNode } from "../../useSelectedNode";
 import * as CommandBarComponentButtonFactory from "./CommandBarComponentButtonFactory";
 
 describe("CommandBarComponentButtonFactory tests", () => {
-  let mockExplorer: Explorer;
-
   afterEach(() => useSelectedNode.getState().setSelectedNode(undefined));
 
   describe("Enable Azure Synapse Link Button", () => {
@@ -19,7 +16,6 @@ describe("CommandBarComponentButtonFactory tests", () => {
     const selectedNodeState = useSelectedNode.getState();
 
     beforeAll(() => {
-      mockExplorer = {} as Explorer;
       updateUserContext({
         databaseAccount: {
           properties: {
@@ -30,7 +26,7 @@ describe("CommandBarComponentButtonFactory tests", () => {
     });
 
     it("Button should be visible", () => {
-      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(mockExplorer, selectedNodeState);
+      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(selectedNodeState);
       const enableAzureSynapseLinkBtn = buttons.find(
         (button) => button.commandButtonLabel === enableAzureSynapseLinkBtnLabel,
       );
@@ -46,7 +42,7 @@ describe("CommandBarComponentButtonFactory tests", () => {
         } as DatabaseAccount,
       });
 
-      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(mockExplorer, selectedNodeState);
+      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(selectedNodeState);
       const enableAzureSynapseLinkBtn = buttons.find(
         (button) => button.commandButtonLabel === enableAzureSynapseLinkBtnLabel,
       );
@@ -62,7 +58,7 @@ describe("CommandBarComponentButtonFactory tests", () => {
         } as DatabaseAccount,
       });
 
-      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(mockExplorer, selectedNodeState);
+      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(selectedNodeState);
       const enableAzureSynapseLinkBtn = buttons.find(
         (button) => button.commandButtonLabel === enableAzureSynapseLinkBtnLabel,
       );
@@ -75,7 +71,6 @@ describe("CommandBarComponentButtonFactory tests", () => {
     const selectedNodeState = useSelectedNode.getState();
 
     beforeAll(() => {
-      mockExplorer = {} as Explorer;
       updateUserContext({
         databaseAccount: {
           properties: {
@@ -108,7 +103,7 @@ describe("CommandBarComponentButtonFactory tests", () => {
           },
         } as DatabaseAccount,
       });
-      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(mockExplorer, selectedNodeState);
+      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(selectedNodeState);
       const openCassandraShellBtn = buttons.find((button) => button.commandButtonLabel === openCassandraShellBtnLabel);
       expect(openCassandraShellBtn).toBeUndefined();
     });
@@ -118,13 +113,13 @@ describe("CommandBarComponentButtonFactory tests", () => {
         portalEnv: "mooncake",
       });
 
-      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(mockExplorer, selectedNodeState);
+      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(selectedNodeState);
       const openCassandraShellBtn = buttons.find((button) => button.commandButtonLabel === openCassandraShellBtnLabel);
       expect(openCassandraShellBtn).toBeUndefined();
     });
 
     it("Notebooks is not enabled and is unavailable - button should be shown and disabled", () => {
-      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(mockExplorer, selectedNodeState);
+      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(selectedNodeState);
       const openCassandraShellBtn = buttons.find((button) => button.commandButtonLabel === openCassandraShellBtnLabel);
       expect(openCassandraShellBtn).toBeUndefined();
     });
@@ -134,12 +129,8 @@ describe("CommandBarComponentButtonFactory tests", () => {
     const openPostgresShellButtonLabel = "Open PSQL shell";
     const openVCoreMongoShellButtonLabel = "Open MongoDB (vCore) shell";
 
-    beforeAll(() => {
-      mockExplorer = {} as Explorer;
-    });
-
     it("creates Postgres shell button", () => {
-      const buttons = CommandBarComponentButtonFactory.createPostgreButtons(mockExplorer);
+      const buttons = CommandBarComponentButtonFactory.createPostgreButtons();
       const openPostgresShellButton = buttons.find(
         (button) => button.commandButtonLabel === openPostgresShellButtonLabel,
       );
@@ -147,7 +138,7 @@ describe("CommandBarComponentButtonFactory tests", () => {
     });
 
     it("creates vCore Mongo shell button", () => {
-      const buttons = CommandBarComponentButtonFactory.createVCoreMongoButtons(mockExplorer);
+      const buttons = CommandBarComponentButtonFactory.createVCoreMongoButtons();
       const openVCoreMongoShellButton = buttons.find(
         (button) => button.commandButtonLabel === openVCoreMongoShellButtonLabel,
       );
@@ -162,8 +153,6 @@ describe("CommandBarComponentButtonFactory tests", () => {
     const selectedNodeState = useSelectedNode.getState();
 
     beforeAll(() => {
-      mockExplorer = {} as Explorer;
-
       updateUserContext({
         authType: AuthType.ResourceToken,
       });
@@ -175,7 +164,7 @@ describe("CommandBarComponentButtonFactory tests", () => {
           kind: "DocumentDB",
         } as DatabaseAccount,
       });
-      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(mockExplorer, selectedNodeState);
+      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(selectedNodeState);
       expect(buttons.length).toBe(2);
       expect(buttons[0].commandButtonLabel).toBe("New SQL Query");
       expect(buttons[0].disabled).toBe(false);

src/Explorer/Menus/CommandBar/CommandBarComponentButtonFactory.tsx

@@ -21,7 +21,6 @@ import { userContext } from "../../../UserContext";
 import { isRunningOnNationalCloud } from "../../../Utils/CloudUtils";
 import { useSidePanel } from "../../../hooks/useSidePanel";
 import { CommandButtonComponentProps } from "../../Controls/CommandButton/CommandButtonComponent";
-import Explorer from "../../Explorer";
 import { useNotebook } from "../../Notebook/useNotebook";
 import { OpenFullScreen } from "../../OpenFullScreen";
 import { BrowseQueriesPane } from "../../Panes/BrowseQueriesPane/BrowseQueriesPane";
@@ -32,19 +31,20 @@ import { SelectedNodeState, useSelectedNode } from "../../useSelectedNode";
 
 let counter = 0;
 
-export function createStaticCommandBarButtons(
-  container: Explorer,
-  selectedNodeState: SelectedNodeState,
-): CommandButtonComponentProps[] {
+export function createStaticCommandBarButtons(selectedNodeState: SelectedNodeState): CommandButtonComponentProps[] {
+  if (userContext.apiType === "Postgres" || userContext.apiType === "VCoreMongo") {
+    return userContext.apiType === "Postgres" ? createPostgreButtons() : createVCoreMongoButtons();
+  }
+
   if (userContext.authType === AuthType.ResourceToken) {
-    return createStaticCommandBarButtonsForResourceToken(container, selectedNodeState);
+    return createStaticCommandBarButtonsForResourceToken(selectedNodeState);
   }
 
   const buttons: CommandButtonComponentProps[] = [];
 
   // Avoid starting with a divider
   const addDivider = () => {
-    if (buttons.length > 0) {
+    if (buttons.length > 0 && !buttons[buttons.length - 1].isDivider) {
       buttons.push(createDivider());
     }
   };
@@ -54,7 +54,7 @@ export function createStaticCommandBarButtons(
     userContext.apiType !== "Tables" &&
     userContext.apiType !== "Cassandra"
   ) {
-    const addSynapseLink = createOpenSynapseLinkDialogButton(container);
+    const addSynapseLink = createOpenSynapseLinkDialogButton();
     if (addSynapseLink) {
       addDivider();
       buttons.push(addSynapseLink);
@@ -67,9 +67,9 @@ export function createStaticCommandBarButtons(
     const aadTokenUpdated = useDataPlaneRbac((state) => state.aadTokenUpdated);
 
     useEffect(() => {
-      const buttonProps = createLoginForEntraIDButton(container);
+      const buttonProps = createLoginForEntraIDButton();
       setLoginButtonProps(buttonProps);
-    }, [dataPlaneRbacEnabled, aadTokenUpdated, container]);
+    }, [dataPlaneRbacEnabled, aadTokenUpdated]);
 
     if (loginButtonProps) {
       addDivider();
@@ -87,8 +87,8 @@ export function createStaticCommandBarButtons(
     }
 
     if (isQuerySupported && selectedNodeState.findSelectedCollection() && configContext.platform !== Platform.Fabric) {
-      const openQueryBtn = createOpenQueryButton(container);
-      openQueryBtn.children = [createOpenQueryButton(container), createOpenQueryFromDiskButton()];
+      const openQueryBtn = createOpenQueryButton();
+      openQueryBtn.children = [createOpenQueryButton(), createOpenQueryFromDiskButton()];
       buttons.push(openQueryBtn);
     }
 
@@ -103,6 +103,7 @@ export function createStaticCommandBarButtons(
           selectedCollection && selectedCollection.onNewStoredProcedureClick(selectedCollection);
         },
         commandButtonLabel: label,
+        tooltipText: userContext.features.commandBarV2 ? "New..." : label,
         ariaLabel: label,
         hasPopup: true,
         disabled:
@@ -115,21 +116,12 @@ export function createStaticCommandBarButtons(
     }
   }
 
-  return buttons;
-}
-
-export function createContextCommandBarButtons(
-  container: Explorer,
-  selectedNodeState: SelectedNodeState,
-): CommandButtonComponentProps[] {
-  const buttons: CommandButtonComponentProps[] = [];
-
   if (!selectedNodeState.isDatabaseNodeOrNoneSelected() && userContext.apiType === "Mongo") {
     const label = useNotebook.getState().isShellEnabled ? "Open Mongo Shell" : "New Shell";
     const newMongoShellBtn: CommandButtonComponentProps = {
       iconSrc: HostedTerminalIcon,
       iconAlt: label,
-      onCommandClick: () => {
+      onCommandClick: (_, container) => {
         const selectedCollection: ViewModels.Collection = selectedNodeState.findSelectedCollection();
         if (useNotebook.getState().isShellEnabled) {
           container.openNotebookTerminal(ViewModels.TerminalKind.Mongo);
@@ -141,6 +133,7 @@ export function createContextCommandBarButtons(
       ariaLabel: label,
       hasPopup: true,
     };
+    addDivider();
     buttons.push(newMongoShellBtn);
   }
 
@@ -153,36 +146,34 @@ export function createContextCommandBarButtons(
     const newCassandraShellButton: CommandButtonComponentProps = {
       iconSrc: HostedTerminalIcon,
       iconAlt: label,
-      onCommandClick: () => {
+      onCommandClick: (_, container) => {
         container.openNotebookTerminal(ViewModels.TerminalKind.Cassandra);
       },
       commandButtonLabel: label,
       ariaLabel: label,
       hasPopup: true,
     };
+    addDivider();
     buttons.push(newCassandraShellButton);
   }
 
   return buttons;
 }
 
-export function createControlCommandBarButtons(container: Explorer): CommandButtonComponentProps[] {
-  const buttons: CommandButtonComponentProps[] =
-    configContext.platform === Platform.Fabric && userContext.fabricContext?.isReadOnly
-      ? []
-      : [
-          {
-            iconSrc: SettingsIcon,
-            iconAlt: "Settings",
-            onCommandClick: () =>
-              useSidePanel.getState().openSidePanel("Settings", <SettingsPane explorer={container} />),
-            commandButtonLabel: undefined,
-            ariaLabel: "Settings",
-            tooltipText: "Settings",
-            hasPopup: true,
-            disabled: false,
-          },
-        ];
+export function createPlatformButtons(): CommandButtonComponentProps[] {
+  const buttons: CommandButtonComponentProps[] = [
+    {
+      iconSrc: SettingsIcon,
+      iconAlt: "Settings",
+      onCommandClick: (_, container) =>
+        useSidePanel.getState().openSidePanel("Settings", <SettingsPane explorer={container} />),
+      commandButtonLabel: undefined,
+      ariaLabel: "Settings",
+      tooltipText: "Settings",
+      hasPopup: true,
+      disabled: false,
+    },
+  ];
 
   const showOpenFullScreen =
     configContext.platform === Platform.Portal && !isRunningOnNationalCloud() && userContext.apiType !== "Gremlin";
@@ -211,7 +202,7 @@ export function createControlCommandBarButtons(container: Explorer): CommandButt
     const feedbackButtonOptions: CommandButtonComponentProps = {
       iconSrc: FeedbackIcon,
       iconAlt: label,
-      onCommandClick: () => container.openCESCVAFeedbackBlade(),
+      onCommandClick: (_, container) => container.openCESCVAFeedbackBlade(),
       commandButtonLabel: undefined,
       ariaLabel: label,
       tooltipText: label,
@@ -243,7 +234,7 @@ function areScriptsSupported(): boolean {
   );
 }
 
-function createOpenSynapseLinkDialogButton(container: Explorer): CommandButtonComponentProps {
+function createOpenSynapseLinkDialogButton(): CommandButtonComponentProps {
   if (configContext.platform === Platform.Emulator) {
     return undefined;
   }
@@ -261,7 +252,7 @@ function createOpenSynapseLinkDialogButton(container: Explorer): CommandButtonCo
   return {
     iconSrc: SynapseIcon,
     iconAlt: label,
-    onCommandClick: () => container.openEnableSynapseLinkDialog(),
+    onCommandClick: (_, container) => container.openEnableSynapseLinkDialog(),
     commandButtonLabel: label,
     hasPopup: false,
     disabled:
@@ -270,12 +261,12 @@ function createOpenSynapseLinkDialogButton(container: Explorer): CommandButtonCo
   };
 }
 
-function createLoginForEntraIDButton(container: Explorer): CommandButtonComponentProps {
+function createLoginForEntraIDButton(): CommandButtonComponentProps {
   if (configContext.platform !== Platform.Portal) {
     return undefined;
   }
 
-  const handleCommandClick = async () => {
+  const handleCommandClick: CommandButtonComponentProps["onCommandClick"] = async (_, container) => {
     await container.openLoginForEntraIDPopUp();
     useDataPlaneRbac.setState({ dataPlaneRbacEnabled: true });
   };
@@ -402,13 +393,14 @@ export function createScriptCommandButtons(selectedNodeState: SelectedNodeState)
   return buttons;
 }
 
-function createOpenQueryButton(container: Explorer): CommandButtonComponentProps {
+function createOpenQueryButton(): CommandButtonComponentProps {
   const label = "Open Query";
   return {
     iconSrc: BrowseQueriesIcon,
     iconAlt: label,
+    tooltipText: userContext.features.commandBarV2 ? "Open Query..." : "Open Query",
     keyboardAction: KeyboardAction.OPEN_QUERY,
-    onCommandClick: () =>
+    onCommandClick: (_, container) =>
       useSidePanel.getState().openSidePanel("Open Saved Queries", <BrowseQueriesPane explorer={container} />),
     commandButtonLabel: label,
     ariaLabel: label,
@@ -431,10 +423,7 @@ function createOpenQueryFromDiskButton(): CommandButtonComponentProps {
   };
 }
 
-function createOpenTerminalButtonByKind(
-  container: Explorer,
-  terminalKind: ViewModels.TerminalKind,
-): CommandButtonComponentProps {
+function createOpenTerminalButtonByKind(terminalKind: ViewModels.TerminalKind): CommandButtonComponentProps {
   const terminalFriendlyName = (): string => {
     switch (terminalKind) {
       case ViewModels.TerminalKind.Cassandra:
@@ -457,7 +446,7 @@ function createOpenTerminalButtonByKind(
   return {
     iconSrc: HostedTerminalIcon,
     iconAlt: label,
-    onCommandClick: () => {
+    onCommandClick: (_, container) => {
       if (useNotebook.getState().isNotebookEnabled) {
         container.openNotebookTerminal(terminalKind);
       }
@@ -471,11 +460,10 @@ function createOpenTerminalButtonByKind(
 }
 
 function createStaticCommandBarButtonsForResourceToken(
-  container: Explorer,
   selectedNodeState: SelectedNodeState,
 ): CommandButtonComponentProps[] {
   const newSqlQueryBtn = createNewSQLQueryButton(selectedNodeState);
-  const openQueryBtn = createOpenQueryButton(container);
+  const openQueryBtn = createOpenQueryButton();
 
   const resourceTokenCollection: ViewModels.CollectionBase = useDatabases.getState().resourceTokenCollection;
   const isResourceTokenCollectionNodeSelected: boolean =
@@ -488,20 +476,20 @@ function createStaticCommandBarButtonsForResourceToken(
 
   openQueryBtn.disabled = !isResourceTokenCollectionNodeSelected;
   if (!openQueryBtn.disabled) {
-    openQueryBtn.children = [createOpenQueryButton(container), createOpenQueryFromDiskButton()];
+    openQueryBtn.children = [createOpenQueryButton(), createOpenQueryFromDiskButton()];
   }
 
   return [newSqlQueryBtn, openQueryBtn];
 }
 
-export function createPostgreButtons(container: Explorer): CommandButtonComponentProps[] {
-  const openPostgreShellBtn = createOpenTerminalButtonByKind(container, ViewModels.TerminalKind.Postgres);
+export function createPostgreButtons(): CommandButtonComponentProps[] {
+  const openPostgreShellBtn = createOpenTerminalButtonByKind(ViewModels.TerminalKind.Postgres);
 
   return [openPostgreShellBtn];
 }
 
-export function createVCoreMongoButtons(container: Explorer): CommandButtonComponentProps[] {
-  const openVCoreMongoTerminalButton = createOpenTerminalButtonByKind(container, ViewModels.TerminalKind.VCoreMongo);
+export function createVCoreMongoButtons(): CommandButtonComponentProps[] {
+  const openVCoreMongoTerminalButton = createOpenTerminalButtonByKind(ViewModels.TerminalKind.VCoreMongo);
 
   return [openVCoreMongoTerminalButton];
 }

src/Explorer/Menus/CommandBar/CommandBarUtil.test.tsx

@@ -1,8 +1,10 @@
 import { ICommandBarItemProps } from "@fluentui/react";
+import Explorer from "Explorer/Explorer";
 import { CommandButtonComponentProps } from "../../Controls/CommandButton/CommandButtonComponent";
 import * as CommandBarUtil from "./CommandBarUtil";
 
 describe("CommandBarUtil tests", () => {
+  const mockExplorer = {} as Explorer;
   const createButton = (): CommandButtonComponentProps => {
     return {
       iconSrc: "icon",
@@ -22,7 +24,7 @@ describe("CommandBarUtil tests", () => {
     const btn = createButton();
     const backgroundColor = "backgroundColor";
 
-    const converteds = CommandBarUtil.convertButton([btn], backgroundColor);
+    const converteds = CommandBarUtil.convertButton([btn], backgroundColor, mockExplorer);
     expect(converteds.length).toBe(1);
     const converted = converteds[0];
     expect(converted.split).toBe(undefined);
@@ -46,7 +48,7 @@ describe("CommandBarUtil tests", () => {
       btn.children.push(child);
     }
 
-    const converteds = CommandBarUtil.convertButton([btn], "backgroundColor");
+    const converteds = CommandBarUtil.convertButton([btn], "backgroundColor", mockExplorer);
     expect(converteds.length).toBe(1);
     const converted = converteds[0];
     expect(converted.split).toBe(true);
@@ -62,7 +64,7 @@ describe("CommandBarUtil tests", () => {
       btns.push(createButton());
     }
 
-    const converteds = CommandBarUtil.convertButton(btns, "backgroundColor");
+    const converteds = CommandBarUtil.convertButton(btns, "backgroundColor", mockExplorer);
     const uniqueKeys = converteds
       .map((btn: ICommandBarItemProps) => btn.key)
       .filter((value: string, index: number, self: string[]) => self.indexOf(value) === index);
@@ -74,10 +76,10 @@ describe("CommandBarUtil tests", () => {
     const backgroundColor = "backgroundColor";
 
     btn.commandButtonLabel = undefined;
-    let converted = CommandBarUtil.convertButton([btn], backgroundColor)[0];
+    let converted = CommandBarUtil.convertButton([btn], backgroundColor, mockExplorer)[0];
     expect(converted.text).toEqual(btn.tooltipText);
 
-    converted = CommandBarUtil.convertButton([btn], backgroundColor)[0];
+    converted = CommandBarUtil.convertButton([btn], backgroundColor, mockExplorer)[0];
     delete btn.commandButtonLabel;
     expect(converted.text).toEqual(btn.tooltipText);
   });

src/Explorer/Menus/CommandBar/CommandBarUtil.tsx

@@ -25,7 +25,11 @@ import { MemoryTracker } from "./MemoryTrackerComponent";
  * Convert our NavbarButtonConfig to UI Fabric buttons
  * @param btns
  */
-export const convertButton = (btns: CommandButtonComponentProps[], backgroundColor: string): ICommandBarItemProps[] => {
+export const convertButton = (
+  btns: CommandButtonComponentProps[],
+  backgroundColor: string,
+  container: Explorer,
+): ICommandBarItemProps[] => {
   const buttonHeightPx =
     configContext.platform == Platform.Fabric
       ? StyleConstants.FabricCommandBarButtonHeight
@@ -54,15 +58,14 @@ export const convertButton = (btns: CommandButtonComponentProps[], backgroundCol
         iconProps: {
           style: {
             width: StyleConstants.CommandBarIconWidth, // 16
-            alignSelf: btn.iconName ? "baseline" : undefined,
+            alignSelf: undefined,
             filter: getFilter(btn.disabled),
           },
           imageProps: btn.iconSrc ? { src: btn.iconSrc, alt: btn.iconAlt } : undefined,
-          iconName: btn.iconName,
         },
         onClick: btn.onCommandClick
           ? (ev?: React.MouseEvent<HTMLElement, MouseEvent> | React.KeyboardEvent<HTMLElement>) => {
-              btn.onCommandClick(ev);
+              btn.onCommandClick(ev, container);
               let copilotEnabled = false;
               if (useQueryCopilot.getState().copilotEnabled && useQueryCopilot.getState().copilotUserDBEnabled) {
                 copilotEnabled = useQueryCopilot.getState().copilotEnabledforExecution;
@@ -135,7 +138,7 @@ export const convertButton = (btns: CommandButtonComponentProps[], backgroundCol
         result.split = true;
 
         result.subMenuProps = {
-          items: convertButton(btn.children, backgroundColor),
+          items: convertButton(btn.children, backgroundColor, container),
           styles: {
             list: {
               // TODO Figure out how to do it the proper way with subComponentStyles.
@@ -186,7 +189,7 @@ export const convertButton = (btns: CommandButtonComponentProps[], backgroundCol
           option?: IDropdownOption,
           index?: number,
         ): void => {
-          btn.children[index].onCommandClick(event);
+          btn.children[index].onCommandClick(event, container);
           TelemetryProcessor.trace(Action.ClickCommandBarButton, ActionModifiers.Mark, { label: option.text });
         };
 
@@ -237,14 +240,17 @@ export const createConnectionStatus = (container: Explorer, poolId: PoolIdType,
   };
 };
 
-export function createKeyboardHandlers(allButtons: CommandButtonComponentProps[]): KeyboardHandlerMap {
+export function createKeyboardHandlers(
+  allButtons: CommandButtonComponentProps[],
+  container: Explorer,
+): KeyboardHandlerMap {
   const handlers: KeyboardHandlerMap = {};
 
   function createHandlers(buttons: CommandButtonComponentProps[]) {
     buttons.forEach((button) => {
       if (!button.disabled && button.keyboardAction) {
         handlers[button.keyboardAction] = (e) => {
-          button.onCommandClick(e);
+          button.onCommandClick(e, container);
 
           // If the handler is bound, it means the button is visible and enabled, so we should prevent the default action
           return true;

src/Explorer/Menus/CommandBar/useCommandBar.ts

@@ -0,0 +1,16 @@
+import { CommandButtonComponentProps } from "Explorer/Controls/CommandButton/CommandButtonComponent";
+import create, { UseStore } from "zustand";
+
+export interface CommandBarStore {
+  contextButtons: CommandButtonComponentProps[];
+  setContextButtons: (contextButtons: CommandButtonComponentProps[]) => void;
+  isHidden: boolean;
+  setIsHidden: (isHidden: boolean) => void;
+}
+
+export const useCommandBar: UseStore<CommandBarStore> = create((set) => ({
+  contextButtons: [],
+  setContextButtons: (contextButtons: CommandButtonComponentProps[]) => set((state) => ({ ...state, contextButtons })),
+  isHidden: false,
+  setIsHidden: (isHidden: boolean) => set((state) => ({ ...state, isHidden })),
+}));

src/Explorer/Menus/CommandBarV2/CommandBarV2.tsx

@@ -0,0 +1,159 @@
+import {
+  makeStyles,
+  Menu,
+  MenuButton,
+  MenuItem,
+  MenuList,
+  MenuPopover,
+  MenuTrigger,
+  Toolbar,
+  ToolbarButton,
+  ToolbarDivider,
+  ToolbarGroup,
+  Tooltip,
+} from "@fluentui/react-components";
+import { CommandButtonComponentProps } from "Explorer/Controls/CommandButton/CommandButtonComponent";
+import Explorer from "Explorer/Explorer";
+import {
+  createPlatformButtons,
+  createStaticCommandBarButtons,
+} from "Explorer/Menus/CommandBar/CommandBarComponentButtonFactory";
+import { createKeyboardHandlers } from "Explorer/Menus/CommandBar/CommandBarUtil";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
+import { CosmosFluentProvider, cosmosShorthands, tokens } from "Explorer/Theme/ThemeUtil";
+import { useSelectedNode } from "Explorer/useSelectedNode";
+import { KeyboardActionGroup, useKeyboardActionGroup } from "KeyboardShortcuts";
+import React, { MouseEventHandler } from "react";
+
+const useToolbarStyles = makeStyles({
+  toolbar: {
+    height: tokens.layoutRowHeight,
+    justifyContent: "space-between", // Ensures that the two toolbar groups are at opposite ends of the toolbar
+    ...cosmosShorthands.borderBottom(),
+  },
+  toolbarGroup: {
+    display: "flex",
+  },
+});
+
+export interface CommandBarV2Props {
+  explorer: Explorer;
+}
+
+export const CommandBarV2: React.FC<CommandBarV2Props> = ({ explorer }: CommandBarV2Props) => {
+  const styles = useToolbarStyles();
+  const selectedNodeState = useSelectedNode();
+  const contextButtons = useCommandBar((state) => state.contextButtons);
+  const isHidden = useCommandBar((state) => state.isHidden);
+  const setKeyboardHandlers = useKeyboardActionGroup(KeyboardActionGroup.COMMAND_BAR);
+  const staticButtons = createStaticCommandBarButtons(selectedNodeState);
+  const platformButtons = createPlatformButtons();
+
+  if (isHidden) {
+    setKeyboardHandlers({});
+    return null;
+  }
+
+  const allButtons = staticButtons.concat(contextButtons).concat(platformButtons);
+  const keyboardHandlers = createKeyboardHandlers(allButtons, explorer);
+  setKeyboardHandlers(keyboardHandlers);
+
+  return (
+    <CosmosFluentProvider>
+      <Toolbar className={styles.toolbar}>
+        <ToolbarGroup role="presentation" className={styles.toolbarGroup}>
+          {staticButtons.map((button, index) =>
+            renderButton(explorer, button, `static-${index}`, contextButtons?.length > 0),
+          )}
+          {staticButtons.length > 0 && contextButtons?.length > 0 && <ToolbarDivider />}
+          {contextButtons.map((button, index) => renderButton(explorer, button, `context-${index}`, false))}
+        </ToolbarGroup>
+        <ToolbarGroup role="presentation">
+          {platformButtons.map((button, index) => renderButton(explorer, button, `platform-${index}`, true))}
+        </ToolbarGroup>
+      </Toolbar>
+    </CosmosFluentProvider>
+  );
+};
+
+// This allows us to migrate individual buttons over to using a JSX.Element for the icon, without requiring us to change them all at once.
+function renderIcon(iconSrcOrElement: string | JSX.Element, alt?: string): JSX.Element {
+  if (typeof iconSrcOrElement === "string") {
+    return <img src={iconSrcOrElement} alt={alt} />;
+  }
+  return iconSrcOrElement;
+}
+
+function renderButton(
+  explorer: Explorer,
+  btn: CommandButtonComponentProps,
+  key: string,
+  iconOnly: boolean,
+): JSX.Element {
+  if (btn.isDivider) {
+    return <ToolbarDivider key={key} />;
+  }
+
+  const hasChildren = !!btn.children && btn.children.length > 0;
+  const label = btn.commandButtonLabel || btn.tooltipText;
+  const tooltip = btn.tooltipText || (iconOnly ? label : undefined);
+  const onClick: MouseEventHandler | undefined =
+    btn.onCommandClick && !hasChildren ? (e) => btn.onCommandClick(e, explorer) : undefined;
+
+  // We don't know which element will be the top-level element, so just slap a key on all of 'em
+
+  let button = hasChildren ? (
+    <MenuButton key={key} appearance="subtle" aria-label={btn.ariaLabel} icon={renderIcon(btn.iconSrc, btn.iconAlt)}>
+      {!iconOnly && label}
+    </MenuButton>
+  ) : (
+    <ToolbarButton key={key} aria-label={btn.ariaLabel} onClick={onClick} icon={renderIcon(btn.iconSrc, btn.iconAlt)}>
+      {!iconOnly && label}
+    </ToolbarButton>
+  );
+
+  if (tooltip) {
+    button = (
+      <Tooltip key={key} content={tooltip} relationship="description" withArrow>
+        {button}
+      </Tooltip>
+    );
+  }
+
+  if (hasChildren) {
+    button = (
+      <Menu key={key}>
+        <MenuTrigger disableButtonEnhancement>{button}</MenuTrigger>
+        <MenuPopover>
+          <MenuList>{btn.children.map((child, index) => renderMenuItem(explorer, child, index.toString()))}</MenuList>
+        </MenuPopover>
+      </Menu>
+    );
+  }
+
+  return button;
+}
+
+function renderMenuItem(explorer: Explorer, btn: CommandButtonComponentProps, key: string): JSX.Element {
+  const hasChildren = !!btn.children && btn.children.length > 0;
+  const onClick: MouseEventHandler | undefined = btn.onCommandClick
+    ? (e) => btn.onCommandClick(e, explorer)
+    : undefined;
+  const item = (
+    <MenuItem key={key} onClick={onClick} icon={renderIcon(btn.iconSrc, btn.iconAlt)}>
+      {btn.commandButtonLabel || btn.tooltipText}
+    </MenuItem>
+  );
+
+  if (hasChildren) {
+    return (
+      <Menu>
+        <MenuTrigger disableButtonEnhancement>{item}</MenuTrigger>
+        <MenuPopover>
+          <MenuList>{btn.children.map((child, index) => renderMenuItem(explorer, child, index.toString()))}</MenuList>
+        </MenuPopover>
+      </Menu>
+    );
+  }
+  return item;
+}

src/Explorer/Menus/NotificationConsole/NotificationConsoleComponent.tsx

@@ -131,6 +131,7 @@ export class NotificationConsoleComponent extends React.Component<
           </div>
           <div
             className="expandCollapseButton"
+            data-test="NotificationConsole/ExpandCollapseButton"
             role="button"
             tabIndex={0}
             aria-label={"console button" + (this.props.isConsoleExpanded ? " expanded" : " collapsed")}
@@ -147,7 +148,7 @@ export class NotificationConsoleComponent extends React.Component<
           height={this.props.isConsoleExpanded ? "auto" : 0}
           onAnimationEnd={this.onConsoleWasExpanded}
         >
-          <div className="notificationConsoleContents">
+          <div data-test="NotificationConsole/Contents" className="notificationConsoleContents">
             <div className="notificationConsoleControls">
               <Dropdown
                 label="Filter:"

src/Explorer/Menus/NotificationConsole/__snapshots__/NotificationConsoleComponent.test.tsx.snap

@@ -74,6 +74,7 @@ exports[`NotificationConsoleComponent renders the console 1`] = `
       aria-expanded={true}
       aria-label="console button collapsed"
       className="expandCollapseButton"
+      data-test="NotificationConsole/ExpandCollapseButton"
       role="button"
       tabIndex={0}
     >
@@ -109,6 +110,7 @@ exports[`NotificationConsoleComponent renders the console 1`] = `
   >
     <div
       className="notificationConsoleContents"
+      data-test="NotificationConsole/Contents"
     >
       <div
         className="notificationConsoleControls"
@@ -245,6 +247,7 @@ exports[`NotificationConsoleComponent renders the console 2`] = `
       aria-expanded={true}
       aria-label="console button collapsed"
       className="expandCollapseButton"
+      data-test="NotificationConsole/ExpandCollapseButton"
       role="button"
       tabIndex={0}
     >
@@ -280,6 +283,7 @@ exports[`NotificationConsoleComponent renders the console 2`] = `
   >
     <div
       className="notificationConsoleContents"
+      data-test="NotificationConsole/Contents"
     >
       <div
         className="notificationConsoleControls"

src/Explorer/MostRecentActivity/MostRecentActivity.test.ts

@@ -1,13 +1,13 @@
+import { clear, collectionWasOpened, getItems, Type } from "Explorer/MostRecentActivity/MostRecentActivity";
 import { observable } from "knockout";
-import { mostRecentActivity } from "./MostRecentActivity";
 
 describe("MostRecentActivity", () => {
-  const accountId = "some account";
+  const accountName = "some account";
 
-  beforeEach(() => mostRecentActivity.clear(accountId));
+  beforeEach(() => clear(accountName));
 
   it("Has no items at first", () => {
-    expect(mostRecentActivity.getItems(accountId)).toStrictEqual([]);
+    expect(getItems(accountName)).toStrictEqual([]);
   });
 
   it("Can record collections being opened", () => {
@@ -18,9 +18,9 @@ describe("MostRecentActivity", () => {
       databaseId,
     };
 
-    mostRecentActivity.collectionWasOpened(accountId, collection);
+    collectionWasOpened(accountName, collection);
 
-    const activity = mostRecentActivity.getItems(accountId);
+    const activity = getItems(accountName);
     expect(activity).toEqual([
       expect.objectContaining({
         collectionId,
@@ -29,58 +29,24 @@ describe("MostRecentActivity", () => {
     ]);
   });
 
-  it("Can record notebooks being opened", () => {
-    const name = "some notebook";
-    const path = "some path";
-    const notebook = { name, path };
+  it("Does not store duplicate entries", () => {
+    const collectionId = "some collection";
+    const databaseId = "some database";
+    const collection = {
+      id: observable(collectionId),
+      databaseId,
+    };
 
-    mostRecentActivity.notebookWasItemOpened(accountId, notebook);
+    collectionWasOpened(accountName, collection);
+    collectionWasOpened(accountName, collection);
 
-    const activity = mostRecentActivity.getItems(accountId);
-    expect(activity).toEqual([expect.objectContaining(notebook)]);
-  });
-
-  it("Filters out duplicates", () => {
-    const name = "some notebook";
-    const path = "some path";
-    const notebook = { name, path };
-    const sameNotebook = { name, path };
-
-    mostRecentActivity.notebookWasItemOpened(accountId, notebook);
-    mostRecentActivity.notebookWasItemOpened(accountId, sameNotebook);
-
-    const activity = mostRecentActivity.getItems(accountId);
-    expect(activity.length).toEqual(1);
-    expect(activity).toEqual([expect.objectContaining(notebook)]);
-  });
-
-  it("Allows for multiple accounts", () => {
-    const name = "some notebook";
-    const path = "some path";
-    const notebook = { name, path };
-
-    const anotherNotebook = { name: "Another " + name, path };
-    const anotherAccountId = "Another " + accountId;
-
-    mostRecentActivity.notebookWasItemOpened(accountId, notebook);
-    mostRecentActivity.notebookWasItemOpened(anotherAccountId, anotherNotebook);
-
-    expect(mostRecentActivity.getItems(accountId)).toEqual([expect.objectContaining(notebook)]);
-    expect(mostRecentActivity.getItems(anotherAccountId)).toEqual([expect.objectContaining(anotherNotebook)]);
-  });
-
-  it("Can store multiple distinct elements, in FIFO order", () => {
-    const name = "some notebook";
-    const path = "some path";
-    const first = { name, path };
-    const second = { name: "Another " + name, path };
-    const third = { name, path: "Another " + path };
-
-    mostRecentActivity.notebookWasItemOpened(accountId, first);
-    mostRecentActivity.notebookWasItemOpened(accountId, second);
-    mostRecentActivity.notebookWasItemOpened(accountId, third);
-
-    const activity = mostRecentActivity.getItems(accountId);
-    expect(activity).toEqual([third, second, first].map(expect.objectContaining));
+    const activity = getItems(accountName);
+    expect(activity).toEqual([
+      expect.objectContaining({
+        type: Type.OpenCollection,
+        collectionId,
+        databaseId,
+      }),
+    ]);
   });
 });

src/Explorer/MostRecentActivity/MostRecentActivity.ts

@@ -1,10 +1,10 @@
+import { AppStateComponentNames, deleteState, loadState, saveState } from "Shared/AppStatePersistenceUtility";
 import { CollectionBase } from "../../Contracts/ViewModels";
-import { StorageKey, LocalStorageUtility } from "../../Shared/StorageUtility";
-import { NotebookContentItem } from "../Notebook/NotebookContentItem";
+import { LocalStorageUtility, StorageKey } from "../../Shared/StorageUtility";
 
 export enum Type {
-  OpenCollection,
-  OpenNotebook,
+  OpenCollection = "OpenCollection",
+  OpenNotebook = "OpenNotebook",
 }
 
 export interface OpenNotebookItem {
@@ -21,158 +21,174 @@ export interface OpenCollectionItem {
 
 type Item = OpenNotebookItem | OpenCollectionItem;
 
-// Update schemaVersion if you are going to change this interface
-interface StoredData {
-  schemaVersion: string;
-  itemsMap: { [accountId: string]: Item[] }; // FIFO
-}
+const itemsMaxNumber: number = 5;
 
 /**
- * Stores most recent activity
+ * Migrate old data to new AppState
  */
-class MostRecentActivity {
-  private static readonly schemaVersion: string = "2";
-  private static itemsMaxNumber: number = 5;
-  private storedData: StoredData;
-  constructor() {
-    // Retrieve from local storage
-    if (LocalStorageUtility.hasItem(StorageKey.MostRecentActivity)) {
-      const rawData = LocalStorageUtility.getEntryString(StorageKey.MostRecentActivity);
-
-      if (!rawData) {
-        this.storedData = MostRecentActivity.createEmptyData();
-      } else {
-        try {
-          this.storedData = JSON.parse(rawData);
-        } catch (e) {
-          console.error("Unable to parse stored most recent activity. Use empty data:", rawData);
-          this.storedData = MostRecentActivity.createEmptyData();
-        }
-
-        // If version doesn't match or schema broke, nuke it!
-        if (
-          !this.storedData.hasOwnProperty("schemaVersion") ||
-          this.storedData["schemaVersion"] !== MostRecentActivity.schemaVersion
-        ) {
-          LocalStorageUtility.removeEntry(StorageKey.MostRecentActivity);
-          this.storedData = MostRecentActivity.createEmptyData();
-        }
+const migrateOldData = () => {
+  if (LocalStorageUtility.hasItem(StorageKey.MostRecentActivity)) {
+    const oldDataSchemaVersion: string = "2";
+    const rawData = LocalStorageUtility.getEntryString(StorageKey.MostRecentActivity);
+    if (rawData) {
+      const oldData = JSON.parse(rawData);
+      if (oldData.schemaVersion === oldDataSchemaVersion) {
+        const itemsMap: Record<string, Item[]> = oldData.itemsMap;
+        Object.keys(itemsMap).forEach((accountId: string) => {
+          const accountName = accountId.split("/").pop();
+          if (accountName) {
+            saveState(
+              {
+                componentName: AppStateComponentNames.MostRecentActivity,
+                globalAccountName: accountName,
+              },
+              itemsMap[accountId].map((item) => {
+                if ((item.type as unknown as number) === 0) {
+                  item.type = Type.OpenCollection;
+                } else if ((item.type as unknown as number) === 1) {
+                  item.type = Type.OpenNotebook;
+                }
+                return item;
+              }),
+            );
+          }
+        });
       }
-    } else {
-      this.storedData = MostRecentActivity.createEmptyData();
     }
 
-    for (let p in this.storedData.itemsMap) {
-      this.cleanupItems(p);
+    // Remove old data
+    LocalStorageUtility.removeEntry(StorageKey.MostRecentActivity);
+  }
+};
+
+const addItem = (accountName: string, newItem: Item): void => {
+  // When debugging, accountId is "undefined": most recent activity cannot be saved by account. Uncomment to disable.
+  // if (!accountId) {
+  //   return;
+  // }
+
+  let items =
+    (loadState({
+      componentName: AppStateComponentNames.MostRecentActivity,
+      globalAccountName: accountName,
+    }) as Item[]) || [];
+
+  // Remove duplicate
+  items = removeDuplicate(newItem, items);
+
+  items.unshift(newItem);
+  items = cleanupItems(items, accountName);
+  saveState(
+    {
+      componentName: AppStateComponentNames.MostRecentActivity,
+      globalAccountName: accountName,
+    },
+    items,
+  );
+};
+
+export const getItems = (accountName: string): Item[] => {
+  if (!accountName) {
+    return [];
+  }
+
+  return (
+    (loadState({
+      componentName: AppStateComponentNames.MostRecentActivity,
+      globalAccountName: accountName,
+    }) as Item[]) || []
+  );
+};
+
+export const collectionWasOpened = (
+  accountName: string,
+  { id, databaseId }: Pick<CollectionBase, "id" | "databaseId">,
+) => {
+  if (accountName === undefined) {
+    return;
+  }
+
+  const collectionId = id();
+  addItem(accountName, {
+    type: Type.OpenCollection,
+    databaseId,
+    collectionId,
+  });
+};
+
+export const clear = (accountName: string): void => {
+  if (!accountName) {
+    return;
+  }
+
+  deleteState({
+    componentName: AppStateComponentNames.MostRecentActivity,
+    globalAccountName: accountName,
+  });
+};
+
+// Sort object by key
+const sortObjectKeys = (unordered: Record<string, unknown>): Record<string, unknown> => {
+  return Object.keys(unordered)
+    .sort()
+    .reduce((obj: Record<string, unknown>, key: string) => {
+      obj[key] = unordered[key];
+      return obj;
+    }, {});
+};
+
+/**
+ * Find items by doing strict comparison and remove from array if duplicate is found.
+ * Modifies the array.
+ * @param item
+ * @param itemsArray
+ * @returns new array
+ */
+const removeDuplicate = (item: Item, itemsArray: Item[]): Item[] => {
+  if (!itemsArray) {
+    return itemsArray;
+  }
+
+  const result: Item[] = [...itemsArray];
+
+  let index = -1;
+  for (let i = 0; i < result.length; i++) {
+    const currentItem = result[i];
+
+    if (
+      JSON.stringify(sortObjectKeys(currentItem as unknown as Record<string, unknown>)) ===
+      JSON.stringify(sortObjectKeys(item as unknown as Record<string, unknown>))
+    ) {
+      index = i;
+      break;
     }
-    this.saveToLocalStorage();
   }
 
-  private static createEmptyData(): StoredData {
-    return {
-      schemaVersion: MostRecentActivity.schemaVersion,
-      itemsMap: {},
-    };
+  if (index !== -1) {
+    result.splice(index, 1);
   }
 
-  private static isEmpty(object: any) {
-    return Object.keys(object).length === 0 && object.constructor === Object;
+  return result;
+};
+
+/**
+ * Remove unknown types
+ * Limit items to max number
+ * Modifies the array.
+ */
+const cleanupItems = (items: Item[], accountName: string): Item[] => {
+  if (accountName === undefined) {
+    return [];
   }
 
-  private saveToLocalStorage() {
-    if (MostRecentActivity.isEmpty(this.storedData.itemsMap)) {
-      if (LocalStorageUtility.hasItem(StorageKey.MostRecentActivity)) {
-        LocalStorageUtility.removeEntry(StorageKey.MostRecentActivity);
-      }
-      // Don't save if empty
-      return;
-    }
-
-    LocalStorageUtility.setEntryString(StorageKey.MostRecentActivity, JSON.stringify(this.storedData));
-  }
-
-  private addItem(accountId: string, newItem: Item): void {
-    // When debugging, accountId is "undefined": most recent activity cannot be saved by account. Uncomment to disable.
-    // if (!accountId) {
-    //   return;
-    // }
-
-    // Remove duplicate
-    MostRecentActivity.removeDuplicate(newItem, this.storedData.itemsMap[accountId]);
-
-    this.storedData.itemsMap[accountId] = this.storedData.itemsMap[accountId] || [];
-    this.storedData.itemsMap[accountId].unshift(newItem);
-    this.cleanupItems(accountId);
-    this.saveToLocalStorage();
-  }
-
-  public getItems(accountId: string): Item[] {
-    return this.storedData.itemsMap[accountId] || [];
-  }
-
-  public collectionWasOpened(accountId: string, { id, databaseId }: Pick<CollectionBase, "id" | "databaseId">) {
-    const collectionId = id();
-    this.addItem(accountId, {
-      type: Type.OpenCollection,
-      databaseId,
-      collectionId,
+  const itemsArray = items.filter((item) => item.type in Type).slice(0, itemsMaxNumber);
+  if (itemsArray.length === 0) {
+    deleteState({
+      componentName: AppStateComponentNames.MostRecentActivity,
+      globalAccountName: accountName,
     });
   }
+  return itemsArray;
+};
 
-  public notebookWasItemOpened(accountId: string, { name, path }: Pick<NotebookContentItem, "name" | "path">) {
-    this.addItem(accountId, {
-      type: Type.OpenNotebook,
-      name,
-      path,
-    });
-  }
-
-  public clear(accountId: string): void {
-    delete this.storedData.itemsMap[accountId];
-    this.saveToLocalStorage();
-  }
-
-  /**
-   * Find items by doing strict comparison and remove from array if duplicate is found
-   * @param item
-   */
-  private static removeDuplicate(item: Item, itemsArray: Item[]): void {
-    if (!itemsArray) {
-      return;
-    }
-
-    let index = -1;
-    for (let i = 0; i < itemsArray.length; i++) {
-      const currentItem = itemsArray[i];
-      if (JSON.stringify(currentItem) === JSON.stringify(item)) {
-        index = i;
-        break;
-      }
-    }
-
-    if (index !== -1) {
-      itemsArray.splice(index, 1);
-    }
-  }
-
-  /**
-   * Remove unknown types
-   * Limit items to max number
-   */
-  private cleanupItems(accountId: string): void {
-    if (!this.storedData.itemsMap.hasOwnProperty(accountId)) {
-      return;
-    }
-
-    const itemsArray = this.storedData.itemsMap[accountId]
-      .filter((item) => item.type in Type)
-      .slice(0, MostRecentActivity.itemsMaxNumber);
-    if (itemsArray.length === 0) {
-      delete this.storedData.itemsMap[accountId];
-    } else {
-      this.storedData.itemsMap[accountId] = itemsArray;
-    }
-  }
-}
-
-export const mostRecentActivity = new MostRecentActivity();
+migrateOldData();

src/Explorer/Notebook/useNotebook.ts

@@ -1,5 +1,6 @@
 import { isPublicInternetAccessAllowed } from "Common/DatabaseAccountUtility";
 import { PhoenixClient } from "Phoenix/PhoenixClient";
+import { useNewPortalBackendEndpoint } from "Utils/EndpointUtils";
 import { cloneDeep } from "lodash";
 import create, { UseStore } from "zustand";
 import { AuthType } from "../../AuthType";
@@ -127,7 +128,9 @@ export const useNotebook: UseStore<NotebookState> = create((set, get) => ({
       userContext.apiType === "Postgres" || userContext.apiType === "VCoreMongo"
         ? databaseAccount?.location
         : databaseAccount?.properties?.writeLocations?.[0]?.locationName.toLowerCase();
-    const disallowedLocationsUri = `${configContext.BACKEND_ENDPOINT}/api/disallowedLocations`;
+    const disallowedLocationsUri: string = useNewPortalBackendEndpoint(Constants.BackendApi.DisallowedLocations)
+      ? `${configContext.PORTAL_BACKEND_ENDPOINT}/api/disallowedlocations`
+      : `${configContext.BACKEND_ENDPOINT}/api/disallowedLocations`;
     const authorizationHeader = getAuthorizationHeader();
     try {
       const response = await fetch(disallowedLocationsUri, {

src/Explorer/Panes/TableColumnSelectionPane/TableColumnSelectionPane.tsx

@@ -0,0 +1,156 @@
+import {
+  Button,
+  Checkbox,
+  CheckboxOnChangeData,
+  InputOnChangeData,
+  makeStyles,
+  SearchBox,
+  SearchBoxChangeEvent,
+  Text,
+} from "@fluentui/react-components";
+import { configContext } from "ConfigContext";
+import { ColumnDefinition } from "Explorer/Tabs/DocumentsTabV2/DocumentsTableComponent";
+import { CosmosFluentProvider, getPlatformTheme } from "Explorer/Theme/ThemeUtil";
+import React from "react";
+import { useSidePanel } from "../../../hooks/useSidePanel";
+
+const useColumnSelectionStyles = makeStyles({
+  paneContainer: {
+    height: "100%",
+    display: "flex",
+  },
+  searchBox: {
+    width: "100%",
+  },
+  checkboxContainer: {
+    display: "flex",
+    flexDirection: "column",
+    flex: 1,
+  },
+  checkboxLabel: {
+    padding: "4px 8px",
+    marginBottom: "0px",
+  },
+});
+export interface TableColumnSelectionPaneProps {
+  columnDefinitions: ColumnDefinition[];
+  selectedColumnIds: string[];
+  onSelectionChange: (newSelectedColumnIds: string[]) => void;
+  defaultSelection: string[];
+}
+
+export const TableColumnSelectionPane: React.FC<TableColumnSelectionPaneProps> = ({
+  columnDefinitions,
+  selectedColumnIds,
+  onSelectionChange,
+  defaultSelection,
+}: TableColumnSelectionPaneProps): JSX.Element => {
+  const closeSidePanel = useSidePanel((state) => state.closeSidePanel);
+  const originalSelectedColumnIds = React.useMemo(() => selectedColumnIds, []);
+  const [columnSearchText, setColumnSearchText] = React.useState<string>("");
+  const [newSelectedColumnIds, setNewSelectedColumnIds] = React.useState<string[]>(originalSelectedColumnIds);
+  const styles = useColumnSelectionStyles();
+
+  const selectedColumnIdsSet = new Set(newSelectedColumnIds);
+  const onCheckedValueChange = (id: string, checkedData?: CheckboxOnChangeData): void => {
+    const checked = checkedData?.checked;
+    if (checked === "mixed" || checked === undefined) {
+      return;
+    }
+
+    if (checked) {
+      selectedColumnIdsSet.add(id);
+    } else {
+      /* selectedColumnIds may contain ids that are not in columnDefinitions, because the selected
+       * ids may have been loaded from persistence, but don't exist in the current retrieved documents.
+       */
+
+      if (
+        Array.from(selectedColumnIdsSet).filter((id) => columnDefinitions.find((def) => def.id === id) !== undefined)
+          .length === 1 &&
+        selectedColumnIdsSet.has(id)
+      ) {
+        // Don't allow unchecking the last column
+        return;
+      }
+      selectedColumnIdsSet.delete(id);
+    }
+    setNewSelectedColumnIds([...selectedColumnIdsSet]);
+  };
+
+  const onSave = (): void => {
+    onSelectionChange(newSelectedColumnIds);
+    closeSidePanel();
+  };
+
+  const onSearchChange: (event: SearchBoxChangeEvent, data: InputOnChangeData) => void = (_, data) =>
+    // eslint-disable-next-line react/prop-types
+    setColumnSearchText(data.value);
+
+  const theme = getPlatformTheme(configContext.platform);
+
+  // Filter and move partition keys to the top
+  const columnDefinitionList = columnDefinitions
+    .filter((def) => !columnSearchText || def.label.toLowerCase().includes(columnSearchText.toLowerCase()))
+    .sort((a, b) => {
+      const ID = "id";
+      // "id" always at the top, then partition keys, then everything else sorted
+      if (a.id === ID) {
+        return b.id === ID ? 0 : -1;
+      } else if (b.id === ID) {
+        return a.id === ID ? 0 : 1;
+      } else if (a.isPartitionKey && !b.isPartitionKey) {
+        return -1;
+      } else if (b.isPartitionKey && !a.isPartitionKey) {
+        return 1;
+      } else {
+        return a.label.localeCompare(b.label);
+      }
+    });
+
+  return (
+    <div className={styles.paneContainer}>
+      <CosmosFluentProvider>
+        <div className="panelFormWrapper">
+          <div className="panelMainContent" style={{ display: "flex", flexDirection: "column" }}>
+            <Text>Select which columns to display in your view of items in your container.</Text>
+            <div /* Wrap <SearchBox> to avoid margin-bottom set by panelMainContent css */>
+              <SearchBox
+                className={styles.searchBox}
+                value={columnSearchText}
+                onChange={onSearchChange}
+                placeholder="Search fields"
+              />
+            </div>
+
+            <div className={styles.checkboxContainer}>
+              {columnDefinitionList.map((columnDefinition) => (
+                <Checkbox
+                  style={{ marginBottom: 0 }}
+                  key={columnDefinition.id}
+                  label={{
+                    className: styles.checkboxLabel,
+                    children: `${columnDefinition.label}${columnDefinition.isPartitionKey ? " (partition key)" : ""}`,
+                  }}
+                  checked={selectedColumnIdsSet.has(columnDefinition.id)}
+                  onChange={(_, data) => onCheckedValueChange(columnDefinition.id, data)}
+                />
+              ))}
+            </div>
+            <Button appearance="secondary" size="small" onClick={() => setNewSelectedColumnIds(defaultSelection)}>
+              Reset
+            </Button>
+          </div>
+          <div className="panelFooter" style={{ display: "flex", gap: theme.spacingHorizontalS }}>
+            <Button appearance="primary" onClick={onSave}>
+              Save
+            </Button>
+            <Button appearance="secondary" onClick={closeSidePanel}>
+              Cancel
+            </Button>
+          </div>
+        </div>
+      </CosmosFluentProvider>
+    </div>
+  );
+};

src/Explorer/QueryCopilot/CopilotCarousel.tsx

@@ -171,7 +171,7 @@ export const QueryCopilotCarousel: React.FC<QueryCopilotCarouselProps> = ({
               the query builder.
             </Text>
             <Text style={{ fontSize: 13, fontWeight: 600, marginTop: 24 }}>Database Id</Text>
-            <Text style={{ fontSize: 13 }}>CopilotSampleDb</Text>
+            <Text style={{ fontSize: 13 }}>CopilotSampleDB</Text>
             <Text style={{ fontSize: 13, fontWeight: 600, marginTop: 16 }}>Database throughput (autoscale)</Text>
             <Text style={{ fontSize: 13 }}>Autoscale</Text>
             <Text style={{ fontSize: 13, fontWeight: 600, marginTop: 16 }}>Database Max RU/s</Text>

src/Explorer/QueryCopilot/QueryCopilotContext.tsx

@@ -1,4 +1,5 @@
 import { MinimalQueryIterator } from "Common/IteratorUtilities";
+import QueryError from "Common/QueryError";
 import { QueryResults } from "Contracts/ViewModels";
 import { CopilotMessage } from "Explorer/QueryCopilot/Shared/QueryCopilotInterfaces";
 import { guid } from "Explorer/Tables/Utilities";
@@ -28,7 +29,7 @@ const CopilotProvider = ({ children }: { children: React.ReactNode }): JSX.Eleme
       showSamplePrompts: false,
       queryIterator: undefined,
       queryResults: undefined,
-      errorMessage: "",
+      errors: [],
       isSamplePromptsOpen: false,
       showPromptTeachingBubble: true,
       showDeletePopup: false,
@@ -64,7 +65,7 @@ const CopilotProvider = ({ children }: { children: React.ReactNode }): JSX.Eleme
       setShowSamplePrompts: (showSamplePrompts: boolean) => set({ showSamplePrompts }),
       setQueryIterator: (queryIterator: MinimalQueryIterator | undefined) => set({ queryIterator }),
       setQueryResults: (queryResults: QueryResults | undefined) => set({ queryResults }),
-      setErrorMessage: (errorMessage: string) => set({ errorMessage }),
+      setErrors: (errors: QueryError[]) => set({ errors }),
       setIsSamplePromptsOpen: (isSamplePromptsOpen: boolean) => set({ isSamplePromptsOpen }),
       setShowPromptTeachingBubble: (showPromptTeachingBubble: boolean) => set({ showPromptTeachingBubble }),
       setShowDeletePopup: (showDeletePopup: boolean) => set({ showDeletePopup }),

src/Explorer/QueryCopilot/QueryCopilotPromptbar.tsx

@@ -18,8 +18,9 @@ import {
   Text,
   TextField,
 } from "@fluentui/react";
-import { HttpStatusCodes } from "Common/Constants";
+import { HttpStatusCodes, NormalizedEventKey } from "Common/Constants";
 import { handleError } from "Common/ErrorHandlingUtils";
+import QueryError, { QueryErrorSeverity } from "Common/QueryError";
 import { createUri } from "Common/UrlUtility";
 import { CopyPopup } from "Explorer/QueryCopilot/Popup/CopyPopup";
 import { DeletePopup } from "Explorer/QueryCopilot/Popup/DeletePopup";
@@ -27,6 +28,8 @@ import {
   SuggestedPrompt,
   getSampleDatabaseSuggestedPrompts,
   getSuggestedPrompts,
+  readPromptHistory,
+  savePromptHistory,
 } from "Explorer/QueryCopilot/QueryCopilotUtilities";
 import { SubmitFeedback, allocatePhoenixContainer } from "Explorer/QueryCopilot/Shared/QueryCopilotClient";
 import { GenerateSQLQueryResponse, QueryCopilotProps } from "Explorer/QueryCopilot/Shared/QueryCopilotInterfaces";
@@ -34,7 +37,7 @@ import { SamplePrompts, SamplePromptsProps } from "Explorer/QueryCopilot/Shared/
 import { Action } from "Shared/Telemetry/TelemetryConstants";
 import { userContext } from "UserContext";
 import { useQueryCopilot } from "hooks/useQueryCopilot";
-import React, { useRef, useState } from "react";
+import React, { useMemo, useRef, useState } from "react";
 import HintIcon from "../../../images/Hint.svg";
 import RecentIcon from "../../../images/Recent.svg";
 import errorIcon from "../../../images/close-black.svg";
@@ -70,6 +73,8 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
 }: QueryCopilotPromptProps): JSX.Element => {
   const [copilotTeachingBubbleVisible, setCopilotTeachingBubbleVisible] = useState<boolean>(false);
   const inputEdited = useRef(false);
+  const itemRefs = useRef([]);
+  const searchInputRef = useRef(null);
   const {
     openFeedbackModal,
     hideFeedbackModalForLikedQueries,
@@ -105,10 +110,10 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
     setShowErrorMessageBar,
     setGeneratedQueryComments,
     setQueryResults,
-    setErrorMessage,
-    errorMessage,
+    setErrors,
+    errors,
   } = useCopilotStore();
-
+  const [focusedIndex, setFocusedIndex] = useState(-1);
   const sampleProps: SamplePromptsProps = {
     isSamplePromptsOpen: isSamplePromptsOpen,
     setIsSamplePromptsOpen: setIsSamplePromptsOpen,
@@ -133,14 +138,13 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
   };
 
   const isSampleCopilotActive = useSelectedNode.getState().isQueryCopilotCollectionSelected();
-  const cachedHistoriesString = localStorage.getItem(`${userContext.databaseAccount?.id}-queryCopilotHistories`);
-  const cachedHistories = cachedHistoriesString?.split("|");
-  const [histories, setHistories] = useState<string[]>(cachedHistories || []);
+  const [histories, setHistories] = useState<string[]>(() => readPromptHistory(userContext.databaseAccount));
   const suggestedPrompts: SuggestedPrompt[] = isSampleCopilotActive
     ? getSampleDatabaseSuggestedPrompts()
     : getSuggestedPrompts();
   const [filteredHistories, setFilteredHistories] = useState<string[]>(histories);
   const [filteredSuggestedPrompts, setFilteredSuggestedPrompts] = useState<SuggestedPrompt[]>(suggestedPrompts);
+  const { UpArrow, DownArrow, Enter } = NormalizedEventKey;
 
   const handleUserPromptChange = (event: React.ChangeEvent<HTMLInputElement>) => {
     inputEdited.current = true;
@@ -168,7 +172,7 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
     const newHistories = [formattedUserPrompt, ...updatedHistories.slice(0, 2)];
 
     setHistories(newHistories);
-    localStorage.setItem(`${userContext.databaseAccount.id}-queryCopilotHistories`, newHistories.join("|"));
+    savePromptHistory(userContext.databaseAccount, newHistories);
   };
 
   const resetMessageStates = (): void => {
@@ -179,7 +183,7 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
 
   const resetQueryResults = (): void => {
     setQueryResults(null);
-    setErrorMessage("");
+    setErrors([]);
   };
 
   const generateSQLQuery = async (): Promise<void> => {
@@ -243,7 +247,12 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
         handleError(JSON.stringify(generateSQLQueryResponse), "copilotTooManyRequestError");
         useTabs.getState().setIsQueryErrorThrown(true);
         setShowErrorMessageBar(true);
-        setErrorMessage("Ratelimit exceeded 5 per 1 minute. Please try again after sometime");
+        setErrors([
+          new QueryError(
+            "Ratelimit exceeded 5 per 1 minute. Please try again after sometime",
+            QueryErrorSeverity.Error,
+          ),
+        ]);
         TelemetryProcessor.traceFailure(Action.QueryGenerationFromCopilotPrompt, {
           databaseName: databaseId,
           collectionId: containerId,
@@ -301,7 +310,38 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
       return "Content is updated";
     }
   };
+  const openSamplePrompts = () => {
+    inputEdited.current = true;
+    setShowSamplePrompts(true);
+  };
+  const totalSuggestions = useMemo(
+    () => [...filteredSuggestedPrompts, ...filteredHistories],
+    [filteredSuggestedPrompts, filteredHistories],
+  );
 
+  const handleKeyDownForInput = (event: React.KeyboardEvent<HTMLInputElement>) => {
+    if (event.key === DownArrow) {
+      setFocusedIndex(0);
+      itemRefs.current[0]?.current?.focus();
+    } else if (event.key === Enter && userPrompt) {
+      inputEdited.current = true;
+      startGenerateQueryProcess();
+    }
+  };
+
+  const handleKeyDownForItem = (event: React.KeyboardEvent<HTMLInputElement>) => {
+    if (event.key === UpArrow && focusedIndex > 0) {
+      itemRefs.current[focusedIndex - 1].current?.focus();
+      setFocusedIndex((prevIndex) => prevIndex - 1);
+    } else if (event.key === DownArrow && focusedIndex < totalSuggestions.length - 1) {
+      itemRefs.current[focusedIndex + 1].current?.focus();
+      setFocusedIndex((prevIndex) => prevIndex + 1);
+    }
+  };
+
+  React.useEffect(() => {
+    itemRefs.current = totalSuggestions.map(() => React.createRef());
+  }, [totalSuggestions]);
   React.useEffect(() => {
     useTabs.getState().setIsQueryErrorThrown(false);
   }, []);
@@ -331,23 +371,14 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
               id="naturalLanguageInput"
               value={userPrompt}
               onChange={handleUserPromptChange}
-              onClick={() => {
-                inputEdited.current = true;
-                setShowSamplePrompts(true);
-              }}
-              onKeyDown={(e) => {
-                if (e.key === "Enter" && userPrompt) {
-                  inputEdited.current = true;
-                  startGenerateQueryProcess();
-                }
-              }}
+              onClick={openSamplePrompts}
+              onFocus={() => setShowSamplePrompts(true)}
+              elementRef={searchInputRef}
+              onKeyDown={handleKeyDownForInput}
               style={{ lineHeight: 30 }}
               styles={{
                 root: { width: "100%" },
-                suffix: {
-                  background: "none",
-                  padding: 0,
-                },
+                suffix: { background: "none", padding: 0 },
                 fieldGroup: {
                   borderRadius: 4,
                   borderColor: "#D1D1D1",
@@ -360,7 +391,8 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
                 },
               }}
               disabled={isGeneratingQuery}
-              autoComplete="off"
+              autoComplete="list"
+              aria-expanded={showSamplePrompts}
               placeholder="Ask a question in natural language and we’ll generate the query for you."
               aria-labelledby="copilot-textfield-label"
               onRenderSuffix={() => {
@@ -432,6 +464,8 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
                             setShowSamplePrompts(false);
                             inputEdited.current = true;
                           }}
+                          elementRef={itemRefs.current[i]}
+                          onKeyDown={handleKeyDownForItem}
                           onRenderIcon={() => <Image src={RecentIcon} styles={{ root: { overflow: "unset" } }} />}
                           styles={promptStyles}
                         >
@@ -454,14 +488,16 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
                       >
                         Suggested Prompts
                       </Text>
-                      {filteredSuggestedPrompts.map((prompt) => (
+                      {filteredSuggestedPrompts.map((prompt, index) => (
                         <DefaultButton
                           key={prompt.id}
+                          elementRef={itemRefs.current[filteredHistories.length + index]}
                           onClick={() => {
                             setUserPrompt(prompt.text);
                             setShowSamplePrompts(false);
                             inputEdited.current = true;
                           }}
+                          onKeyDown={handleKeyDownForItem}
                           onRenderIcon={() => <Image src={HintIcon} />}
                           styles={promptStyles}
                         >
@@ -514,7 +550,9 @@ export const QueryCopilotPromptbar: React.FC<QueryCopilotPromptProps> = ({
                   </Link>
                   {showErrorMessageBar && (
                     <MessageBar messageBarType={MessageBarType.error}>
-                      {errorMessage ? errorMessage : "We ran into an error and were not able to execute query."}
+                      {errors.length > 0
+                        ? errors[0].message
+                        : "We ran into an error and were not able to execute query."}
                     </MessageBar>
                   )}
                   {showInvalidQueryMessageBar && (

src/Explorer/QueryCopilot/QueryCopilotTab.test.tsx

@@ -1,10 +1,39 @@
 import { shallow } from "enzyme";
+import { CopilotSubComponentNames } from "Explorer/QueryCopilot/QueryCopilotUtilities";
 import React from "react";
+import { AppStateComponentNames, StorePath } from "Shared/AppStatePersistenceUtility";
+import { updateUserContext } from "UserContext";
 import Explorer from "../Explorer";
 import { QueryCopilotTab } from "./QueryCopilotTab";
 
 describe("Query copilot tab snapshot test", () => {
   it("should render with initial input", () => {
+    updateUserContext({
+      databaseAccount: {
+        name: "name",
+        properties: undefined,
+        id: "",
+        location: "",
+        type: "",
+        kind: "",
+      },
+    });
+
+    const loadState = (path: StorePath) => {
+      if (
+        path.componentName === AppStateComponentNames.QueryCopilot &&
+        path.subComponentName === CopilotSubComponentNames.toggleStatus
+      ) {
+        return { enabled: true };
+      } else {
+        return undefined;
+      }
+    };
+
+    jest.mock("Shared/AppStatePersistenceUtility", () => ({
+      loadState,
+    }));
+
     const wrapper = shallow(<QueryCopilotTab explorer={new Explorer()} />);
     expect(wrapper).toMatchSnapshot();
   });

src/Explorer/QueryCopilot/QueryCopilotTab.tsx

@@ -3,9 +3,10 @@ import { Stack } from "@fluentui/react";
 import { QueryCopilotSampleContainerId, QueryCopilotSampleDatabaseId } from "Common/Constants";
 import { CommandButtonComponentProps } from "Explorer/Controls/CommandButton/CommandButtonComponent";
 import { EditorReact } from "Explorer/Controls/Editor/EditorReact";
-import { useCommandBar } from "Explorer/Menus/CommandBar/CommandBarComponentAdapter";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { SaveQueryPane } from "Explorer/Panes/SaveQueryPane/SaveQueryPane";
 import { QueryCopilotPromptbar } from "Explorer/QueryCopilot/QueryCopilotPromptbar";
+import { readCopilotToggleStatus, saveCopilotToggleStatus } from "Explorer/QueryCopilot/QueryCopilotUtilities";
 import { OnExecuteQueryClick } from "Explorer/QueryCopilot/Shared/QueryCopilotClient";
 import { QueryCopilotProps } from "Explorer/QueryCopilot/Shared/QueryCopilotInterfaces";
 import { QueryCopilotResults } from "Explorer/QueryCopilot/Shared/QueryCopilotResults";
@@ -18,18 +19,13 @@ import SplitterLayout from "react-splitter-layout";
 import QueryCommandIcon from "../../../images/CopilotCommand.svg";
 import ExecuteQueryIcon from "../../../images/ExecuteQuery.svg";
 import SaveQueryIcon from "../../../images/save-cosmos.svg";
-import * as StringUtility from "../../Shared/StringUtility";
 
 export const QueryCopilotTab: React.FC<QueryCopilotProps> = ({ explorer }: QueryCopilotProps): JSX.Element => {
   const { query, setQuery, selectedQuery, setSelectedQuery, isGeneratingQuery } = useQueryCopilot();
 
-  const cachedCopilotToggleStatus: string = localStorage.getItem(
-    `${userContext.databaseAccount?.id}-queryCopilotToggleStatus`,
+  const [copilotActive, setCopilotActive] = useState<boolean>(() =>
+    readCopilotToggleStatus(userContext.databaseAccount),
   );
-  const copilotInitialActive: boolean = cachedCopilotToggleStatus
-    ? StringUtility.toBoolean(cachedCopilotToggleStatus)
-    : true;
-  const [copilotActive, setCopilotActive] = useState<boolean>(copilotInitialActive);
   const [tabActive, setTabActive] = useState<boolean>(true);
 
   const getCommandbarButtons = (): CommandButtonComponentProps[] => {
@@ -88,7 +84,7 @@ export const QueryCopilotTab: React.FC<QueryCopilotProps> = ({ explorer }: Query
 
   const toggleCopilot = (toggle: boolean) => {
     setCopilotActive(toggle);
-    localStorage.setItem(`${userContext.databaseAccount?.id}-queryCopilotToggleStatus`, toggle.toString());
+    saveCopilotToggleStatus(userContext.databaseAccount, toggle);
   };
 
   return (

src/Explorer/QueryCopilot/QueryCopilotUtilities.test.tsx

@@ -90,7 +90,7 @@ describe("QueryCopilotUtilities", () => {
 
       // Mock the items.query method to return the mockResult
       (
-        sampleDataClient().database("CopilotSampleDb").container("SampleContainer").items.query as jest.Mock
+        sampleDataClient().database("CopilotSampleDB").container("SampleContainer").items.query as jest.Mock
       ).mockReturnValue(mockResult);
 
       const result = querySampleDocuments(query, options);
@@ -119,10 +119,10 @@ describe("QueryCopilotUtilities", () => {
       const result = await readSampleDocument(documentId);
 
       expect(sampleDataClient).toHaveBeenCalled();
-      expect(sampleDataClient().database).toHaveBeenCalledWith("CopilotSampleDb");
-      expect(sampleDataClient().database("CopilotSampleDb").container).toHaveBeenCalledWith("SampleContainer");
+      expect(sampleDataClient().database).toHaveBeenCalledWith("CopilotSampleDB");
+      expect(sampleDataClient().database("CopilotSampleDB").container).toHaveBeenCalledWith("SampleContainer");
       expect(
-        sampleDataClient().database("CopilotSampleDb").container("SampleContainer").item("DocumentId", undefined).read,
+        sampleDataClient().database("CopilotSampleDB").container("SampleContainer").item("DocumentId", undefined).read,
       ).toHaveBeenCalled();
       expect(result).toEqual(expectedResponse);
     });
@@ -144,10 +144,10 @@ describe("QueryCopilotUtilities", () => {
       await expect(readSampleDocument(documentId)).rejects.toStrictEqual(errorMock);
 
       expect(sampleDataClient).toHaveBeenCalled();
-      expect(sampleDataClient().database).toHaveBeenCalledWith("CopilotSampleDb");
-      expect(sampleDataClient().database("CopilotSampleDb").container).toHaveBeenCalledWith("SampleContainer");
+      expect(sampleDataClient().database).toHaveBeenCalledWith("CopilotSampleDB");
+      expect(sampleDataClient().database("CopilotSampleDB").container).toHaveBeenCalledWith("SampleContainer");
       expect(
-        sampleDataClient().database("CopilotSampleDb").container("SampleContainer").item("DocumentId", undefined).read,
+        sampleDataClient().database("CopilotSampleDB").container("SampleContainer").item("DocumentId", undefined).read,
       ).toHaveBeenCalled();
       expect(handleError).toHaveBeenCalledWith(errorMock, "ReadDocument", expect.any(String));
     });

src/Explorer/QueryCopilot/QueryCopilotUtilities.ts

@@ -4,8 +4,11 @@ import { handleError } from "Common/ErrorHandlingUtils";
 import { sampleDataClient } from "Common/SampleDataClient";
 import { getPartitionKeyValue } from "Common/dataAccess/getPartitionKeyValue";
 import { getCommonQueryOptions } from "Common/dataAccess/queryDocuments";
+import { DatabaseAccount } from "Contracts/DataModels";
 import DocumentId from "Explorer/Tree/DocumentId";
+import { AppStateComponentNames, loadState, saveState } from "Shared/AppStatePersistenceUtility";
 import { logConsoleProgress } from "Utils/NotificationConsoleUtils";
+import * as StringUtility from "../../Shared/StringUtility";
 
 export interface SuggestedPrompt {
   id: number;
@@ -54,3 +57,110 @@ export const getSuggestedPrompts = (): SuggestedPrompt[] => {
     { id: 3, text: "Find the oldest item added to my collection" },
   ];
 };
+
+// Prompt history persistence
+export enum CopilotSubComponentNames {
+  promptHistory = "PromptHistory",
+  toggleStatus = "ToggleStatus",
+}
+
+const getLegacyHistoryKey = (databaseAccount: DatabaseAccount): string =>
+  `${databaseAccount?.id}-queryCopilotHistories`;
+const getLegacyToggleStatusKey = (databaseAccount: DatabaseAccount): string =>
+  `${databaseAccount?.id}-queryCopilotToggleStatus`;
+
+// Migration only needs to run once
+let hasMigrated = false;
+// Migrate old prompt history to new format
+export const migrateCopilotPersistence = (databaseAccount: DatabaseAccount): void => {
+  if (hasMigrated) {
+    return;
+  }
+
+  let key = getLegacyHistoryKey(databaseAccount);
+  let item = localStorage.getItem(key);
+  if (item !== undefined && item !== null) {
+    const historyItems = item.split("|");
+    saveState(
+      {
+        componentName: AppStateComponentNames.QueryCopilot,
+        subComponentName: CopilotSubComponentNames.promptHistory,
+        globalAccountName: databaseAccount.name,
+        databaseName: undefined,
+        containerName: undefined,
+      },
+      historyItems,
+    );
+
+    localStorage.removeItem(key);
+  }
+
+  key = getLegacyToggleStatusKey(databaseAccount);
+  item = localStorage.getItem(key);
+  if (item !== undefined && item !== null) {
+    saveState(
+      {
+        componentName: AppStateComponentNames.QueryCopilot,
+        subComponentName: CopilotSubComponentNames.toggleStatus,
+        globalAccountName: databaseAccount.name,
+        databaseName: undefined,
+        containerName: undefined,
+      },
+      StringUtility.toBoolean(item),
+    );
+
+    localStorage.removeItem(key);
+  }
+
+  hasMigrated = true;
+};
+
+export const readPromptHistory = (databaseAccount: DatabaseAccount): string[] => {
+  migrateCopilotPersistence(databaseAccount);
+  return (
+    (loadState({
+      componentName: AppStateComponentNames.QueryCopilot,
+      subComponentName: CopilotSubComponentNames.promptHistory,
+      globalAccountName: databaseAccount.name,
+      databaseName: undefined,
+      containerName: undefined,
+    }) as string[]) || []
+  );
+};
+
+export const savePromptHistory = (databaseAccount: DatabaseAccount, historyItems: string[]): void => {
+  saveState(
+    {
+      componentName: AppStateComponentNames.QueryCopilot,
+      subComponentName: CopilotSubComponentNames.promptHistory,
+      globalAccountName: databaseAccount.name,
+      databaseName: undefined,
+      containerName: undefined,
+    },
+    historyItems,
+  );
+};
+
+export const readCopilotToggleStatus = (databaseAccount: DatabaseAccount): boolean => {
+  migrateCopilotPersistence(databaseAccount);
+  return !!loadState({
+    componentName: AppStateComponentNames.QueryCopilot,
+    subComponentName: CopilotSubComponentNames.toggleStatus,
+    globalAccountName: databaseAccount.name,
+    databaseName: undefined,
+    containerName: undefined,
+  }) as boolean;
+};
+
+export const saveCopilotToggleStatus = (databaseAccount: DatabaseAccount, status: boolean): void => {
+  saveState(
+    {
+      componentName: AppStateComponentNames.QueryCopilot,
+      subComponentName: CopilotSubComponentNames.toggleStatus,
+      globalAccountName: databaseAccount.name,
+      databaseName: undefined,
+      containerName: undefined,
+    },
+    status,
+  );
+};

src/Explorer/QueryCopilot/Shared/QueryCopilotClient.ts

@@ -13,6 +13,7 @@ import {
 import { getErrorMessage, getErrorStack, handleError } from "Common/ErrorHandlingUtils";
 import { shouldEnableCrossPartitionKey } from "Common/HeadersUtility";
 import { MinimalQueryIterator } from "Common/IteratorUtilities";
+import QueryError from "Common/QueryError";
 import { createUri } from "Common/UrlUtility";
 import { queryDocumentsPage } from "Common/dataAccess/queryDocumentsPage";
 import { configContext } from "ConfigContext";
@@ -25,7 +26,7 @@ import {
 import { AuthorizationTokenHeaderMetadata, QueryResults } from "Contracts/ViewModels";
 import { useDialog } from "Explorer/Controls/Dialog";
 import Explorer from "Explorer/Explorer";
-import { querySampleDocuments } from "Explorer/QueryCopilot/QueryCopilotUtilities";
+import { querySampleDocuments, readCopilotToggleStatus } from "Explorer/QueryCopilot/QueryCopilotUtilities";
 import { FeedbackParams, GenerateSQLQueryResponse } from "Explorer/QueryCopilot/Shared/QueryCopilotInterfaces";
 import { Action } from "Shared/Telemetry/TelemetryConstants";
 import { traceFailure, traceStart, traceSuccess } from "Shared/Telemetry/TelemetryProcessor";
@@ -35,7 +36,6 @@ import { useNewPortalBackendEndpoint } from "Utils/EndpointUtils";
 import { queryPagesUntilContentPresent } from "Utils/QueryUtils";
 import { QueryCopilotState, useQueryCopilot } from "hooks/useQueryCopilot";
 import { useTabs } from "hooks/useTabs";
-import * as StringUtility from "../../../Shared/StringUtility";
 
 async function fetchWithTimeout(
   url: string,
@@ -354,24 +354,23 @@ export const QueryDocumentsPerPage = async (
     );
 
     useQueryCopilot.getState().setQueryResults(queryResults);
-    useQueryCopilot.getState().setErrorMessage("");
+    useQueryCopilot.getState().setErrors([]);
     useQueryCopilot.getState().setShowErrorMessageBar(false);
     traceSuccess(Action.ExecuteQueryGeneratedFromQueryCopilot, {
       correlationId: useQueryCopilot.getState().correlationId,
     });
   } catch (error) {
-    const isCopilotActive = StringUtility.toBoolean(
-      localStorage.getItem(`${userContext.databaseAccount?.id}-queryCopilotToggleStatus`),
-    );
+    const isCopilotActive = readCopilotToggleStatus(userContext.databaseAccount);
     const errorMessage = getErrorMessage(error);
     traceFailure(Action.ExecuteQueryGeneratedFromQueryCopilot, {
       correlationId: useQueryCopilot.getState().correlationId,
-      errorMessage: errorMessage,
+      errorMessage,
     });
     handleError(errorMessage, "executeQueryCopilotTab");
     useTabs.getState().setIsQueryErrorThrown(true);
     if (isCopilotActive) {
-      useQueryCopilot.getState().setErrorMessage(errorMessage);
+      const queryErrors = QueryError.tryParse(error);
+      useQueryCopilot.getState().setErrors(queryErrors);
       useQueryCopilot.getState().setShowErrorMessageBar(true);
     }
   } finally {

src/Explorer/QueryCopilot/Shared/QueryCopilotResults.tsx

@@ -8,7 +8,7 @@ export const QueryCopilotResults: React.FC = (): JSX.Element => {
     <QueryResultSection
       isMongoDB={false}
       queryEditorContent={useQueryCopilot.getState().selectedQuery || useQueryCopilot.getState().query}
-      error={useQueryCopilot.getState().errorMessage}
+      errors={useQueryCopilot.getState().errors}
       queryResults={useQueryCopilot.getState().queryResults}
       isExecuting={useQueryCopilot.getState().isExecuting}
       executeQueryDocumentsPage={(firstItemIndex: number) =>

src/Explorer/QueryCopilot/__snapshots__/QueryCopilotTab.test.tsx.snap

@@ -17,38 +17,6 @@ exports[`Query copilot tab snapshot test should render with initial input 1`] =
       }
     }
   >
-    <QueryCopilotPromptbar
-      containerId="SampleContainer"
-      databaseId="CopilotSampleDb"
-      explorer={
-        Explorer {
-          "_isInitializingNotebooks": false,
-          "isFixedCollectionWithSharedThroughputSupported": [Function],
-          "isTabsContentExpanded": [Function],
-          "onRefreshDatabasesKeyPress": [Function],
-          "onRefreshResourcesClick": [Function],
-          "phoenixClient": PhoenixClient {
-            "armResourceId": undefined,
-            "retryOptions": {
-              "maxTimeout": 5000,
-              "minTimeout": 5000,
-              "retries": 3,
-            },
-          },
-          "provideFeedbackEmail": [Function],
-          "queriesClient": QueriesClient {
-            "container": [Circular],
-          },
-          "refreshNotebookList": [Function],
-          "resourceTree": ResourceTreeAdapter {
-            "container": [Circular],
-            "copyNotebook": [Function],
-            "parameters": [Function],
-          },
-        }
-      }
-      toggleCopilot={[Function]}
-    />
     <Stack
       className="tabPaneContentContainer"
     >

src/Explorer/Sidebar.tsx

@@ -1,6 +1,7 @@
 import {
   Button,
   Menu,
+  MenuButton,
   MenuButtonProps,
   MenuItem,
   MenuList,
@@ -25,7 +26,7 @@ import { getCollectionName, getDatabaseName } from "Utils/APITypeUtils";
 import { Allotment, AllotmentHandle } from "allotment";
 import { useSidePanel } from "hooks/useSidePanel";
 import { debounce } from "lodash";
-import React, { useCallback, useEffect, useMemo, useRef } from "react";
+import React, { useCallback, useEffect, useMemo, useRef, useState } from "react";
 
 const useSidebarStyles = makeStyles({
   sidebar: {
@@ -60,6 +61,7 @@ const useSidebarStyles = makeStyles({
     alignItems: "center",
     justifyItems: "center",
     width: "100%",
+    containerType: "size", // Use this container for "@container" queries below this.
     ...cosmosShorthands.borderBottom(),
   },
   loadingProgressBar: {
@@ -83,6 +85,18 @@ const useSidebarStyles = makeStyles({
       },
     },
   },
+  globalCommandsMenuButton: {
+    display: "inline-flex",
+    "@container (min-width: 250px)": {
+      display: "none",
+    },
+  },
+  globalCommandsSplitButton: {
+    display: "none",
+    "@container (min-width: 250px)": {
+      display: "flex",
+    },
+  },
 });
 
 interface GlobalCommandsProps {
@@ -99,6 +113,12 @@ interface GlobalCommand {
 
 const GlobalCommands: React.FC<GlobalCommandsProps> = ({ explorer }) => {
   const styles = useSidebarStyles();
+
+  // Since we have two buttons in the DOM (one for small screens and one for larger screens), we wrap the entire thing in a div.
+  // However, that messes with the Menu positioning, so we need to get a reference to the 'div' to pass to the Menu.
+  // We can't use a ref though, because it would be set after the Menu is rendered, so we use a state value to force a re-render.
+  const [globalCommandButton, setGlobalCommandButton] = useState<HTMLElement | null>(null);
+
   const actions = useMemo<GlobalCommand[]>(() => {
     if (
       configContext.platform === Platform.Fabric ||
@@ -168,16 +188,22 @@ const GlobalCommands: React.FC<GlobalCommandsProps> = ({ explorer }) => {
           {primaryAction.label}
         </Button>
       ) : (
-        <Menu positioning="below-end">
+        <Menu positioning={{ target: globalCommandButton, position: "below", align: "end" }}>
           <MenuTrigger disableButtonEnhancement>
             {(triggerProps: MenuButtonProps) => (
-              <SplitButton
-                menuButton={{ ...triggerProps, "aria-label": "More commands" }}
-                primaryActionButton={{ onClick: onPrimaryActionClick }}
-                icon={primaryAction.icon}
-              >
-                {primaryAction.label}
-              </SplitButton>
+              <div ref={setGlobalCommandButton}>
+                <SplitButton
+                  menuButton={{ ...triggerProps, "aria-label": "More commands" }}
+                  primaryActionButton={{ onClick: onPrimaryActionClick }}
+                  className={styles.globalCommandsSplitButton}
+                  icon={primaryAction.icon}
+                >
+                  {primaryAction.label}
+                </SplitButton>
+                <MenuButton {...triggerProps} icon={primaryAction.icon} className={styles.globalCommandsMenuButton}>
+                  New...
+                </MenuButton>
+              </div>
             )}
           </MenuTrigger>
           <MenuPopover>
@@ -199,7 +225,7 @@ interface SidebarProps {
   explorer: Explorer;
 }
 
-const CollapseThreshold = 50;
+const CollapseThreshold = 140;
 
 export const SidebarContainer: React.FC<SidebarProps> = ({ explorer }) => {
   const styles = useSidebarStyles();
@@ -260,7 +286,7 @@ export const SidebarContainer: React.FC<SidebarProps> = ({ explorer }) => {
       {/* Collections Tree - Start */}
       {hasSidebar && (
         // When collapsed, we force the pane to 24 pixels wide and make it non-resizable.
-        <Allotment.Pane minSize={24} preferredSize={300}>
+        <Allotment.Pane minSize={24} preferredSize={250}>
           <CosmosFluentProvider className={mergeClasses(styles.sidebar)}>
             <div className={styles.sidebarContainer}>
               {loading && (
@@ -274,6 +300,7 @@ export const SidebarContainer: React.FC<SidebarProps> = ({ explorer }) => {
                     <div className={styles.floatingControls}>
                       <button
                         type="button"
+                        data-test="Sidebar/RefreshButton"
                         className={styles.floatingControlButton}
                         disabled={loading}
                         title="Refresh"
@@ -313,7 +340,7 @@ export const SidebarContainer: React.FC<SidebarProps> = ({ explorer }) => {
           </CosmosFluentProvider>
         </Allotment.Pane>
       )}
-      <Allotment.Pane minSize={800}>
+      <Allotment.Pane minSize={200}>
         <Tabs explorer={explorer} />
       </Allotment.Pane>
     </Allotment>

src/Explorer/SplashScreen/SplashScreen.tsx

@@ -114,7 +114,7 @@ export class SplashScreen extends React.Component<SplashScreenProps> {
   }
 
   private clearMostRecent = (): void => {
-    MostRecentActivity.mostRecentActivity.clear(userContext.databaseAccount?.id);
+    MostRecentActivity.clear(userContext.databaseAccount?.name);
     this.setState({});
   };
 
@@ -498,7 +498,7 @@ export class SplashScreen extends React.Component<SplashScreenProps> {
   }
 
   private createRecentItems(): SplashScreenItem[] {
-    return MostRecentActivity.mostRecentActivity.getItems(userContext.databaseAccount?.id).map((activity) => {
+    return MostRecentActivity.getItems(userContext.databaseAccount?.name).map((activity) => {
       switch (activity.type) {
         default: {
           const unknownActivity: never = activity;

src/Explorer/Tables/Constants.ts

@@ -155,6 +155,7 @@ export const htmlAttributeNames = {
   dataTableContentTypeAttr: "contentType_attr",
   dataTableSnapshotAttr: "snapshot_attr",
   dataTableRowKeyAttr: "rowKey_attr",
+  dataTablePartitionKeyAttr: "partKey_attr",
   dataTableMessageIdAttr: "messageId_attr",
   dataTableHeaderIndex: "data-column-index",
 };

src/Explorer/Tables/DataTable/DataTableBindingManager.ts

@@ -193,6 +193,9 @@ function getServerData(sSource: any, aoData: any, fnCallback: any, oSettings: an
  * from UI elements.
  */
 function bindClientId(nRow: Node, aData: Entities.ITableEntity) {
+  if (aData.PartitionKey && aData.PartitionKey._) {
+    $(nRow).attr(Constants.htmlAttributeNames.dataTablePartitionKeyAttr, aData.PartitionKey._);
+  }
   $(nRow).attr(Constants.htmlAttributeNames.dataTableRowKeyAttr, aData.RowKey._);
   return nRow;
 }
@@ -205,6 +208,10 @@ function selectionChanged(element: any, valueAccessor: any, allBindings: any, vi
   selected &&
     selected.forEach((b: Entities.ITableEntity) => {
       var sel = DataTableOperations.getRowSelector([
+        {
+          key: Constants.htmlAttributeNames.dataTablePartitionKeyAttr,
+          value: b.PartitionKey && b.PartitionKey._ && b.PartitionKey._.toString(),
+        },
         {
           key: Constants.htmlAttributeNames.dataTableRowKeyAttr,
           value: b.RowKey && b.RowKey._ && b.RowKey._.toString(),
@@ -370,8 +377,9 @@ function updateSelectionStatus(oSettings: any): void {
     for (var i = 0; i < $dataTableRows.length; i++) {
       var $row: JQuery = $dataTableRows.eq(i);
       var rowKey: string = $row.attr(Constants.htmlAttributeNames.dataTableRowKeyAttr);
+      var partitionKey: string = $row.attr(Constants.htmlAttributeNames.dataTablePartitionKeyAttr);
       var table = tableEntityListViewModelMap[oSettings.ajax].tableViewModel;
-      if (table.isItemSelected(table.getTableEntityKeys(rowKey))) {
+      if (table.isItemSelected(table.getTableEntityKeys(rowKey, partitionKey))) {
         $row.attr("tabindex", "0");
       }
     }

src/Explorer/Tables/DataTable/DataTableOperationManager.ts

@@ -56,7 +56,10 @@ export default class DataTableOperationManager {
       // Simply select the first item in this case.
       var lastSelectedItemIndex = lastSelectedItem
         ? this._tableEntityListViewModel.getItemIndexFromCurrentPage(
-            this._tableEntityListViewModel.getTableEntityKeys(lastSelectedItem.RowKey._),
+            this._tableEntityListViewModel.getTableEntityKeys(
+              lastSelectedItem.RowKey._,
+              lastSelectedItem.PartitionKey && lastSelectedItem.PartitionKey._,
+            ),
           )
         : -1;
       var nextIndex: number = isUpArrowKey ? lastSelectedItemIndex - 1 : lastSelectedItemIndex + 1;
@@ -147,13 +150,14 @@ export default class DataTableOperationManager {
   private getEntityIdentity($elem: JQuery<Element>): Entities.ITableEntityIdentity {
     return {
       RowKey: $elem.attr(Constants.htmlAttributeNames.dataTableRowKeyAttr),
+      PartitionKey: $elem.attr(Constants.htmlAttributeNames.dataTablePartitionKeyAttr),
     };
   }
 
   private updateLastSelectedItem($elem: JQuery<Element>, isShiftSelect: boolean) {
     var entityIdentity: Entities.ITableEntityIdentity = this.getEntityIdentity($elem);
     var entity = this._tableEntityListViewModel.getItemFromCurrentPage(
-      this._tableEntityListViewModel.getTableEntityKeys(entityIdentity.RowKey),
+      this._tableEntityListViewModel.getTableEntityKeys(entityIdentity.PartitionKey, entityIdentity.RowKey),
     );
 
     this._tableEntityListViewModel.lastSelectedItem = entity;
@@ -168,7 +172,7 @@ export default class DataTableOperationManager {
       var entityIdentity: Entities.ITableEntityIdentity = this.getEntityIdentity($elem);
 
       this._tableEntityListViewModel.clearSelection();
-      this.addToSelection(entityIdentity.RowKey);
+      this.addToSelection(entityIdentity.RowKey, entityIdentity.PartitionKey);
     }
   }
 
@@ -190,11 +194,11 @@ export default class DataTableOperationManager {
 
       if (
         !this._tableEntityListViewModel.isItemSelected(
-          this._tableEntityListViewModel.getTableEntityKeys(entityIdentity.RowKey),
+          this._tableEntityListViewModel.getTableEntityKeys(entityIdentity.PartitionKey, entityIdentity.RowKey),
         )
       ) {
         // Adding item not previously in selection
-        this.addToSelection(entityIdentity.RowKey);
+        this.addToSelection(entityIdentity.RowKey, entityIdentity.PartitionKey);
       } else {
         koSelected.remove((item: Entities.ITableEntity) => item.RowKey._ === entityIdentity.RowKey);
       }
@@ -212,10 +216,10 @@ export default class DataTableOperationManager {
     if (anchorItem) {
       var entityIdentity: Entities.ITableEntityIdentity = this.getEntityIdentity($elem);
       var elementIndex = this._tableEntityListViewModel.getItemIndexFromAllPages(
-        this._tableEntityListViewModel.getTableEntityKeys(entityIdentity.RowKey),
+        this._tableEntityListViewModel.getTableEntityKeys(entityIdentity.PartitionKey, entityIdentity.RowKey),
       );
       var anchorIndex = this._tableEntityListViewModel.getItemIndexFromAllPages(
-        this._tableEntityListViewModel.getTableEntityKeys(anchorItem.RowKey._),
+        this._tableEntityListViewModel.getTableEntityKeys(anchorItem.PartitionKey._, anchorItem.RowKey._),
       );
 
       var startIndex = Math.min(elementIndex, anchorIndex);
@@ -234,24 +238,25 @@ export default class DataTableOperationManager {
 
     if (
       !this._tableEntityListViewModel.isItemSelected(
-        this._tableEntityListViewModel.getTableEntityKeys(entityIdentity.RowKey),
+        this._tableEntityListViewModel.getTableEntityKeys(entityIdentity.PartitionKey, entityIdentity.RowKey),
       )
     ) {
       if (this._tableEntityListViewModel.selected().length) {
         this._tableEntityListViewModel.clearSelection();
       }
-      this.addToSelection(entityIdentity.RowKey);
+      this.addToSelection(entityIdentity.RowKey, entityIdentity.PartitionKey);
     }
   }
 
-  private addToSelection(rowKey: string) {
+  private addToSelection(rowKey: string, partitionKey?: string) {
     var selectedEntity: Entities.ITableEntity = this._tableEntityListViewModel.getItemFromCurrentPage(
-      this._tableEntityListViewModel.getTableEntityKeys(rowKey),
+      this._tableEntityListViewModel.getTableEntityKeys(rowKey, partitionKey),
     );
 
     if (selectedEntity != null) {
       this._tableEntityListViewModel.selected.push(selectedEntity);
     }
+    console.log(this._tableEntityListViewModel.selected().length);
   }
 
   // Selecting first row if the selection is empty.
@@ -269,7 +274,7 @@ export default class DataTableOperationManager {
       // Clear last selection: lastSelectedItem and lastSelectedAnchorItem
       this._tableEntityListViewModel.clearLastSelected();
 
-      this.addToSelection(firstEntity.RowKey._);
+      this.addToSelection(firstEntity.RowKey._, firstEntity.PartitionKey && firstEntity.PartitionKey._);
 
       // Update last selection
       this._tableEntityListViewModel.lastSelectedItem = firstEntity;

src/Explorer/Tables/DataTable/TableEntityListViewModel.ts

@@ -128,8 +128,14 @@ export default class TableEntityListViewModel extends DataTableViewModel {
     this.sqlQuery = ko.observable<string>("SELECT * FROM c");
   }
 
-  public getTableEntityKeys(rowKey: string): Entities.IProperty[] {
-    return [{ key: Constants.EntityKeyNames.RowKey, value: rowKey }];
+  public getTableEntityKeys(rowKey: string, partitionKey: string): Entities.IProperty[] {
+    const properties: Entities.IProperty[] = [{ key: Constants.EntityKeyNames.RowKey, value: rowKey }];
+
+    if (partitionKey) {
+      properties.push({ key: Constants.EntityKeyNames.PartitionKey, value: partitionKey });
+    }
+
+    return properties;
   }
 
   public reloadTable(useSetting: boolean = true, resetHeaders: boolean = true): DataTables.Api<Element> {
@@ -261,7 +267,8 @@ export default class TableEntityListViewModel extends DataTableViewModel {
     }
     var oldEntityIndex: number = _.findIndex(
       this.cache.data,
-      (data: Entities.ITableEntity) => data.RowKey._ === entity.RowKey._,
+      (data: Entities.ITableEntity) =>
+        data.RowKey._ === entity.RowKey._ && data.PartitionKey._ === entity.PartitionKey._,
     );
 
     this.cache.data.splice(oldEntityIndex, 1, entity);
@@ -285,7 +292,7 @@ export default class TableEntityListViewModel extends DataTableViewModel {
       entities.forEach((entity: Entities.ITableEntity) => {
         var cachedIndex: number = _.findIndex(
           this.cache.data,
-          (e: Entities.ITableEntity) => e.RowKey._ === entity.RowKey._,
+          (e: Entities.ITableEntity) => e.RowKey._ === entity.RowKey._ && e.PartitionKey._ === entity.PartitionKey._,
         );
         if (cachedIndex >= 0) {
           this.cache.data.splice(cachedIndex, 1);
@@ -393,6 +400,16 @@ export default class TableEntityListViewModel extends DataTableViewModel {
     });
   }
 
+  // Override as Tables can have the same Row key in different Partition keys
+  /**
+   * @override
+   */
+  public getItemFromCurrentPage(itemKeys: Entities.IProperty[]): Entities.ITableEntity {
+    return _.find(this.items(), (item: Entities.ITableEntity) => {
+      return this.matchesKeys(item, itemKeys);
+    });
+  }
+
   private prefetchAndRender(
     tableQuery: Entities.ITableQuery,
     tablePageStartIndex: number,

src/Explorer/Tables/Entities.ts

@@ -36,4 +36,5 @@ export interface ITableQuery {
 
 export interface ITableEntityIdentity {
   RowKey: string;
+  PartitionKey?: string;
 }

src/Explorer/Tables/TableDataClient.ts

@@ -753,17 +753,11 @@ export class CassandraAPIDataClient extends TableDataClient {
       CassandraProxyEndpoints.Development,
       CassandraProxyEndpoints.Mpac,
       CassandraProxyEndpoints.Prod,
+      CassandraProxyEndpoints.Fairfax,
+      CassandraProxyEndpoints.Mooncake,
     ];
-    let canAccessCassandraProxy: boolean = userContext.databaseAccount.properties.publicNetworkAccess === "Enabled";
-    if (
-      configContext.CASSANDRA_PROXY_ENDPOINT !== CassandraProxyEndpoints.Development &&
-      userContext.databaseAccount.properties.ipRules?.length > 0
-    ) {
-      canAccessCassandraProxy = canAccessCassandraProxy && configContext.CASSANDRA_PROXY_OUTBOUND_IPS_ALLOWLISTED;
-    }
 
     return (
-      canAccessCassandraProxy &&
       configContext.NEW_CASSANDRA_APIS?.includes(api) &&
       activeCassandraProxyEndpoints.includes(configContext.CASSANDRA_PROXY_ENDPOINT)
     );

src/Explorer/Tabs/DocumentsTabV2/DocumentsTabStateUtil.ts

@@ -0,0 +1,113 @@
+// Definitions of State data
+
+import { ColumnDefinition } from "Explorer/Tabs/DocumentsTabV2/DocumentsTableComponent";
+import {
+  AppStateComponentNames,
+  deleteState,
+  loadState,
+  saveState,
+  saveStateDebounced,
+} from "Shared/AppStatePersistenceUtility";
+import { userContext } from "UserContext";
+import * as ViewModels from "../../../Contracts/ViewModels";
+import { Action } from "../../../Shared/Telemetry/TelemetryConstants";
+import * as TelemetryProcessor from "../../../Shared/Telemetry/TelemetryProcessor";
+
+const componentName = AppStateComponentNames.DocumentsTab;
+
+export enum SubComponentName {
+  ColumnSizes = "ColumnSizes",
+  FilterHistory = "FilterHistory",
+  MainTabDivider = "MainTabDivider",
+  ColumnsSelection = "ColumnsSelection",
+  ColumnSort = "ColumnSort",
+}
+
+export type ColumnSizesMap = { [columnId: string]: WidthDefinition };
+export type FilterHistory = string[];
+export type WidthDefinition = { widthPx: number };
+export type TabDivider = { leftPaneWidthPercent: number };
+export type ColumnsSelection = { selectedColumnIds: string[]; columnDefinitions: ColumnDefinition[] };
+export type ColumnSort = { columnId: string; direction: "ascending" | "descending" };
+
+/**
+ *
+ * @param subComponentName
+ * @param collection
+ * @param defaultValue Will be returned if persisted state is not found
+ * @returns
+ */
+export const readSubComponentState = <T>(
+  subComponentName: SubComponentName,
+  collection: ViewModels.CollectionBase,
+  defaultValue: T,
+): T => {
+  const globalAccountName = userContext.databaseAccount?.name;
+  if (!globalAccountName) {
+    const message = "Database account name not found in userContext";
+    console.error(message);
+    TelemetryProcessor.traceFailure(Action.ReadPersistedTabState, { message, componentName });
+    return defaultValue;
+  }
+
+  const state = loadState({
+    componentName: componentName,
+    subComponentName,
+    globalAccountName,
+    databaseName: collection.databaseId,
+    containerName: collection.id(),
+  }) as T;
+
+  return state || defaultValue;
+};
+
+/**
+ *
+ * @param subComponentName
+ * @param collection
+ * @param state State to save
+ * @param debounce true for high-frequency calls (e.g mouse drag events)
+ */
+export const saveSubComponentState = <T>(
+  subComponentName: SubComponentName,
+  collection: ViewModels.CollectionBase,
+  state: T,
+  debounce?: boolean,
+): void => {
+  const globalAccountName = userContext.databaseAccount?.name;
+  if (!globalAccountName) {
+    const message = "Database account name not found in userContext";
+    console.error(message);
+    TelemetryProcessor.traceFailure(Action.SavePersistedTabState, { message, componentName });
+    return;
+  }
+
+  (debounce ? saveStateDebounced : saveState)(
+    {
+      componentName: componentName,
+      subComponentName,
+      globalAccountName,
+      databaseName: collection.databaseId,
+      containerName: collection.id(),
+    },
+    state,
+  );
+};
+
+export const deleteSubComponentState = (subComponentName: SubComponentName, collection: ViewModels.CollectionBase) => {
+  const globalAccountName = userContext.databaseAccount?.name;
+  if (!globalAccountName) {
+    const message = "Database account name not found in userContext";
+    console.error(message);
+    TelemetryProcessor.traceFailure(Action.DeletePersistedTabState, { message, componentName });
+    return;
+  }
+
+  deleteState({
+    componentName: componentName,
+    subComponentName,
+    globalAccountName,
+    databaseName: collection.databaseId,
+    containerName: collection.id(),
+  });
+};

src/Explorer/Tabs/DocumentsTabV2/DocumentsTabV2.test.tsx

@@ -1,8 +1,11 @@
 import { FeedResponse, ItemDefinition, Resource } from "@azure/cosmos";
+import { waitFor } from "@testing-library/react";
 import { deleteDocuments } from "Common/dataAccess/deleteDocument";
 import { Platform, updateConfigContext } from "ConfigContext";
+import { useDialog } from "Explorer/Controls/Dialog";
 import { EditorReactProps } from "Explorer/Controls/Editor/EditorReact";
-import { useCommandBar } from "Explorer/Menus/CommandBar/CommandBarComponentAdapter";
+import { ProgressModalDialog } from "Explorer/Controls/ProgressModalDialog";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import {
   ButtonsDependencies,
   DELETE_BUTTON_ID,
@@ -13,6 +16,7 @@ import {
   SAVE_BUTTON_ID,
   UPDATE_BUTTON_ID,
   UPLOAD_BUTTON_ID,
+  addStringsNoDuplicate,
   buildQuery,
   getDiscardExistingDocumentChangesButtonState,
   getDiscardNewDocumentChangesButtonState,
@@ -64,12 +68,14 @@ jest.mock("Explorer/Controls/Editor/EditorReact", () => ({
   EditorReact: (props: EditorReactProps) => <>{props.content}</>,
 }));
 
+const mockDialogState = {
+  showOkCancelModalDialog: jest.fn((title: string, subText: string, okLabel: string, onOk: () => void) => onOk()),
+  showOkModalDialog: () => {},
+};
+
 jest.mock("Explorer/Controls/Dialog", () => ({
   useDialog: {
-    getState: jest.fn(() => ({
-      showOkCancelModalDialog: (title: string, subText: string, okLabel: string, onOk: () => void) => onOk(),
-      showOkModalDialog: () => {},
-    })),
+    getState: jest.fn(() => mockDialogState),
   },
 }));
 
@@ -79,6 +85,10 @@ jest.mock("Common/dataAccess/deleteDocument", () => ({
   ),
 }));
 
+jest.mock("Explorer/Controls/ProgressModalDialog", () => ({
+  ProgressModalDialog: jest.fn(() => <></>),
+}));
+
 async function waitForComponentToPaint<P = unknown>(wrapper: ReactWrapper<P> | ShallowWrapper<P>, amount = 0) {
   let newWrapper;
   await act(async () => {
@@ -91,7 +101,13 @@ async function waitForComponentToPaint<P = unknown>(wrapper: ReactWrapper<P> | S
 describe("Documents tab (noSql API)", () => {
   describe("buildQuery", () => {
     it("should generate the right select query for SQL API", () => {
-      expect(buildQuery(false, "")).toContain("select");
+      expect(
+        buildQuery(false, "", ["pk"], {
+          paths: ["pk"],
+          kind: "Hash",
+          version: 2,
+        }),
+      ).toContain("select");
     });
   });
 
@@ -339,7 +355,10 @@ describe("Documents tab (noSql API)", () => {
     const createMockProps = (): IDocumentsTabComponentProps => ({
       isPreferredApiMongoDB: false,
       documentIds: [],
-      collection: undefined,
+      collection: {
+        id: ko.observable<string>("collectionId"),
+        databaseId: "databaseId",
+      } as ViewModels.CollectionBase,
       partitionKey: { kind: "Hash", paths: ["/foo"], version: 2 },
       onLoadStartKey: 0,
       tabTitle: "",
@@ -380,7 +399,7 @@ describe("Documents tab (noSql API)", () => {
         .findWhere((node) => node.text() === "Edit Filter")
         .at(0)
         .simulate("click");
-      expect(wrapper.find("#filterInput").exists()).toBeTruthy();
+      expect(wrapper.find("Input.filterInput").exists()).toBeTruthy();
     });
   });
 
@@ -442,7 +461,7 @@ describe("Documents tab (noSql API)", () => {
         useCommandBar
           .getState()
           .contextButtons.find((button) => button.id === NEW_DOCUMENT_BUTTON_ID)
-          .onCommandClick(undefined);
+          .onCommandClick(undefined, undefined);
       });
       expect(wrapper.findWhere((node) => node.text().includes("replace_with_new_document_id")).exists()).toBeTruthy();
     });
@@ -452,14 +471,36 @@ describe("Documents tab (noSql API)", () => {
         useCommandBar
           .getState()
           .contextButtons.find((button) => button.id === NEW_DOCUMENT_BUTTON_ID)
-          .onCommandClick(undefined);
+          .onCommandClick(undefined, undefined);
       });
 
       expect(useCommandBar.getState().contextButtons.find((button) => button.id === SAVE_BUTTON_ID)).toBeDefined();
       expect(useCommandBar.getState().contextButtons.find((button) => button.id === DISCARD_BUTTON_ID)).toBeDefined();
     });
 
-    it("clicking Delete Document asks for confirmation", () => {
+    it("clicking Delete Document asks for confirmation", async () => {
+      act(async () => {
+        await useCommandBar
+          .getState()
+          .contextButtons.find((button) => button.id === DELETE_BUTTON_ID)
+          .onCommandClick(undefined, undefined);
+      });
+
+      expect(useDialog.getState().showOkCancelModalDialog).toHaveBeenCalled();
+    });
+
+    it("clicking Delete Document for NoSql shows progress dialog", () => {
+      act(() => {
+        useCommandBar
+          .getState()
+          .contextButtons.find((button) => button.id === DELETE_BUTTON_ID)
+          .onCommandClick(undefined, undefined);
+      });
+
+      expect(ProgressModalDialog).toHaveBeenCalled();
+    });
+
+    it("clicking Delete Document eventually calls delete client api", () => {
       const mockDeleteDocuments = deleteDocuments as jest.Mock;
       mockDeleteDocuments.mockClear();
 
@@ -467,10 +508,21 @@ describe("Documents tab (noSql API)", () => {
         useCommandBar
           .getState()
           .contextButtons.find((button) => button.id === DELETE_BUTTON_ID)
-          .onCommandClick(undefined);
+          .onCommandClick(undefined, undefined);
       });
 
-      expect(mockDeleteDocuments).toHaveBeenCalled();
+      // The implementation uses setTimeout, so wait for it to finish
+      waitFor(() => expect(mockDeleteDocuments).toHaveBeenCalled());
     });
   });
 });
+
+describe("Documents tab", () => {
+  it("should add strings to array without duplicate", () => {
+    const array1 = ["a", "b", "c"];
+    const array2 = ["b", "c", "d"];
+
+    const array3 = addStringsNoDuplicate(array1, array2);
+    expect(array3).toEqual(["a", "b", "c", "d"]);
+  });
+});

src/Explorer/Tabs/DocumentsTabV2/DocumentsTabV2Mongo.test.tsx

@@ -1,7 +1,7 @@
-import { deleteDocument } from "Common/MongoProxyClient";
+import { deleteDocuments } from "Common/MongoProxyClient";
 import { Platform, updateConfigContext } from "ConfigContext";
 import { EditorReactProps } from "Explorer/Controls/Editor/EditorReact";
-import { useCommandBar } from "Explorer/Menus/CommandBar/CommandBarComponentAdapter";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import {
   DELETE_BUTTON_ID,
   DISCARD_BUTTON_ID,
@@ -49,7 +49,9 @@ jest.mock("Common/MongoProxyClient", () => ({
       id: "id1",
     }),
   ),
-  deleteDocument: jest.fn(() => Promise.resolve()),
+  deleteDocuments: jest.fn(() => Promise.resolve({ deleteCount: 0, isAcknowledged: true })),
+  ThrottlingError: Error,
+  useMongoProxyEndpoint: jest.fn(() => true),
 }));
 
 jest.mock("Explorer/Controls/Editor/EditorReact", () => ({
@@ -161,7 +163,7 @@ describe("Documents tab (Mongo API)", () => {
         useCommandBar
           .getState()
           .contextButtons.find((button) => button.id === NEW_DOCUMENT_BUTTON_ID)
-          .onCommandClick(undefined);
+          .onCommandClick(undefined, undefined);
       });
       expect(wrapper.findWhere((node) => node.text().includes("replace_with_new_document_id")).exists()).toBeTruthy();
     });
@@ -171,25 +173,25 @@ describe("Documents tab (Mongo API)", () => {
         useCommandBar
           .getState()
           .contextButtons.find((button) => button.id === NEW_DOCUMENT_BUTTON_ID)
-          .onCommandClick(undefined);
+          .onCommandClick(undefined, undefined);
       });
 
       expect(useCommandBar.getState().contextButtons.find((button) => button.id === SAVE_BUTTON_ID)).toBeDefined();
       expect(useCommandBar.getState().contextButtons.find((button) => button.id === DISCARD_BUTTON_ID)).toBeDefined();
     });
 
-    it("clicking Delete Document asks for confirmation", () => {
-      const mockDeleteDocument = deleteDocument as jest.Mock;
-      mockDeleteDocument.mockClear();
+    it("clicking Delete Document eventually calls delete client api", () => {
+      const mockDeleteDocuments = deleteDocuments as jest.Mock;
+      mockDeleteDocuments.mockClear();
 
       act(() => {
         useCommandBar
           .getState()
           .contextButtons.find((button) => button.id === DELETE_BUTTON_ID)
-          .onCommandClick(undefined);
+          .onCommandClick(undefined, undefined);
       });
 
-      expect(mockDeleteDocument).toHaveBeenCalled();
+      expect(mockDeleteDocuments).toHaveBeenCalled();
     });
   });
 });

src/Explorer/Tabs/DocumentsTabV2/DocumentsTableComponent.test.tsx

@@ -1,6 +1,7 @@
 import { TableRowId } from "@fluentui/react-components";
 import { mount } from "enzyme";
 import React from "react";
+import * as ViewModels from "../../../Contracts/ViewModels";
 import { DocumentsTableComponent, IDocumentsTableComponentProps } from "./DocumentsTableComponent";
 
 const PARTITION_KEY_HEADER = "partitionKey";
@@ -20,11 +21,19 @@ describe("DocumentsTableComponent", () => {
       height: 0,
       width: 0,
     },
-    columnHeaders: {
-      idHeader: ID_HEADER,
-      partitionKeyHeaders: [PARTITION_KEY_HEADER],
+    columnDefinitions: [
+      { id: ID_HEADER, label: "ID", isPartitionKey: false },
+      { id: PARTITION_KEY_HEADER, label: "Partition Key", isPartitionKey: true },
+    ],
+    isRowSelectionDisabled: false,
+    collection: {
+      databaseId: "db",
+      id: ((): string => "coll") as ko.Observable<string>,
+    } as ViewModels.CollectionBase,
+    onRefreshTable: (): void => {
+      throw new Error("Function not implemented.");
     },
-    isSelectionDisabled: false,
+    selectedColumnIds: [],
   });
 
   it("should render documents and partition keys in header", () => {
@@ -35,7 +44,7 @@ describe("DocumentsTableComponent", () => {
 
   it("should not render selection column when isSelectionDisabled is true", () => {
     const props: IDocumentsTableComponentProps = createMockProps();
-    props.isSelectionDisabled = true;
+    props.isRowSelectionDisabled = true;
     const wrapper = mount(<DocumentsTableComponent {...props} />);
     expect(wrapper).toMatchSnapshot();
   });

src/Explorer/Tabs/DocumentsTabV2/DocumentsTableComponent.tsx

@@ -1,52 +1,86 @@
 import {
+  Button,
   Menu,
+  MenuDivider,
   MenuItem,
   MenuList,
   MenuPopover,
   MenuTrigger,
   TableRowData as RowStateBase,
+  SortDirection,
   Table,
   TableBody,
   TableCell,
   TableCellLayout,
   TableColumnDefinition,
+  TableColumnId,
   TableColumnSizingOptions,
   TableHeader,
   TableHeaderCell,
   TableRow,
   TableRowId,
   TableSelectionCell,
-  createTableColumn,
+  tokens,
   useArrowNavigationGroup,
   useTableColumnSizing_unstable,
   useTableFeatures,
   useTableSelection,
+  useTableSort,
 } from "@fluentui/react-components";
+import {
+  ArrowClockwise16Regular,
+  ArrowResetRegular,
+  DeleteRegular,
+  EditRegular,
+  MoreHorizontalRegular,
+  TableResizeColumnRegular,
+  TextSortAscendingRegular,
+  TextSortDescendingRegular,
+} from "@fluentui/react-icons";
 import { NormalizedEventKey } from "Common/Constants";
+import { Environment, getEnvironment } from "Common/EnvironmentUtility";
+import { TableColumnSelectionPane } from "Explorer/Panes/TableColumnSelectionPane/TableColumnSelectionPane";
+import {
+  ColumnSizesMap,
+  ColumnSort,
+  deleteSubComponentState,
+  readSubComponentState,
+  saveSubComponentState,
+  SubComponentName,
+} from "Explorer/Tabs/DocumentsTabV2/DocumentsTabStateUtil";
 import { INITIAL_SELECTED_ROW_INDEX, useDocumentsTabStyles } from "Explorer/Tabs/DocumentsTabV2/DocumentsTabV2";
 import { selectionHelper } from "Explorer/Tabs/DocumentsTabV2/SelectionHelper";
 import { LayoutConstants } from "Explorer/Theme/ThemeUtil";
 import { isEnvironmentCtrlPressed, isEnvironmentShiftPressed } from "Utils/KeyboardUtils";
+import { useSidePanel } from "hooks/useSidePanel";
 import React, { useCallback, useMemo } from "react";
 import { FixedSizeList as List, ListChildComponentProps } from "react-window";
+import * as ViewModels from "../../../Contracts/ViewModels";
 
 export type DocumentsTableComponentItem = {
   id: string;
-} & Record<string, string>;
+} & Record<string, string | number>;
 
-export type ColumnHeaders = {
-  idHeader: string;
-  partitionKeyHeaders: string[];
+export type ColumnDefinition = {
+  id: string;
+  label: string;
+  isPartitionKey: boolean;
 };
 export interface IDocumentsTableComponentProps {
+  onRefreshTable: () => void;
   items: DocumentsTableComponentItem[];
   onItemClicked: (index: number) => void;
   onSelectedRowsChange: (selectedItemsIndices: Set<TableRowId>) => void;
   selectedRows: Set<TableRowId>;
   size: { height: number; width: number };
-  columnHeaders: ColumnHeaders;
+  selectedColumnIds: string[];
+  columnDefinitions: ColumnDefinition[];
   style?: React.CSSProperties;
-  isSelectionDisabled?: boolean;
+  isRowSelectionDisabled?: boolean;
+  collection: ViewModels.CollectionBase;
+  onColumnSelectionChange?: (newSelectedColumnIds: string[]) => void;
+  defaultColumnSelection?: string[];
+  isColumnSelectionDisabled?: boolean;
 }
 
 interface TableRowData extends RowStateBase<DocumentsTableComponentItem> {
@@ -59,72 +93,204 @@ interface ReactWindowRenderFnProps extends ListChildComponentProps {
   data: TableRowData[];
 }
 
+const COLUMNS_MENU_NAME = "columnsMenu";
+
+const defaultSize = {
+  idealWidth: 200,
+  minWidth: 50,
+};
 export const DocumentsTableComponent: React.FC<IDocumentsTableComponentProps> = ({
+  onRefreshTable,
   items,
   onSelectedRowsChange,
   selectedRows,
   style,
   size,
-  columnHeaders,
-  isSelectionDisabled,
+  selectedColumnIds,
+  columnDefinitions,
+  isRowSelectionDisabled: isSelectionDisabled,
+  collection,
+  onColumnSelectionChange,
+  defaultColumnSelection,
+  isColumnSelectionDisabled,
 }: IDocumentsTableComponentProps) => {
   const styles = useDocumentsTabStyles();
 
-  const initialSizingOptions: TableColumnSizingOptions = {
-    id: {
-      idealWidth: 280,
-      minWidth: 50,
-    },
-  };
-  columnHeaders.partitionKeyHeaders.forEach((pkHeader) => {
-    initialSizingOptions[pkHeader] = {
-      idealWidth: 200,
-      minWidth: 50,
+  const [columnSizingOptions, setColumnSizingOptions] = React.useState<TableColumnSizingOptions>(() => {
+    const columnSizesMap: ColumnSizesMap = readSubComponentState(SubComponentName.ColumnSizes, collection, {});
+    const columnSizesPx: TableColumnSizingOptions = {};
+    selectedColumnIds.forEach((columnId) => {
+      if (
+        !columnSizesMap ||
+        !columnSizesMap[columnId] ||
+        columnSizesMap[columnId].widthPx === undefined ||
+        isNaN(columnSizesMap[columnId].widthPx)
+      ) {
+        columnSizesPx[columnId] = defaultSize;
+      } else {
+        columnSizesPx[columnId] = {
+          idealWidth: columnSizesMap[columnId].widthPx,
+          minWidth: 50,
+        };
+      }
+    });
+    return columnSizesPx;
+  });
+
+  const [sortState, setSortState] = React.useState<{
+    sortDirection: "ascending" | "descending";
+    sortColumn: TableColumnId | undefined;
+  }>(() => {
+    const sort = readSubComponentState<ColumnSort>(SubComponentName.ColumnSort, collection, undefined);
+
+    if (!sort) {
+      return {
+        sortDirection: undefined,
+        sortColumn: undefined,
+      };
+    }
+
+    return {
+      sortDirection: sort.direction,
+      sortColumn: sort.columnId,
     };
   });
 
-  const [columnSizingOptions, setColumnSizingOptions] = React.useState<TableColumnSizingOptions>(initialSizingOptions);
+  const onColumnResize = React.useCallback((_, { columnId, width }: { columnId: string; width: number }) => {
+    setColumnSizingOptions((state) => {
+      const newSizingOptions = {
+        ...state,
+        [columnId]: {
+          ...state[columnId],
+          idealWidth: width,
+        },
+      };
 
-  const onColumnResize = React.useCallback((_, { columnId, width }) => {
-    setColumnSizingOptions((state) => ({
-      ...state,
-      [columnId]: {
-        ...state[columnId],
-        idealWidth: width,
-      },
-    }));
+      const persistentSizes = Object.keys(newSizingOptions).reduce((acc, key) => {
+        acc[key] = {
+          widthPx: newSizingOptions[key].idealWidth,
+        };
+        return acc;
+      }, {} as ColumnSizesMap);
+
+      saveSubComponentState<ColumnSizesMap>(SubComponentName.ColumnSizes, collection, persistentSizes, true);
+
+      return newSizingOptions;
+    });
   }, []);
 
+  // const restoreFocusTargetAttribute = useRestoreFocusTarget();
+
+  const onSortClick = (event: React.SyntheticEvent, columnId: string, direction: SortDirection) => {
+    setColumnSort(event, columnId, direction);
+
+    if (columnId === undefined || direction === undefined) {
+      deleteSubComponentState(SubComponentName.ColumnSort, collection);
+      return;
+    }
+
+    saveSubComponentState<ColumnSort>(SubComponentName.ColumnSort, collection, { columnId, direction });
+  };
+
   // Columns must be a static object and cannot change on re-renders otherwise React will complain about too many refreshes
   const columns: TableColumnDefinition<DocumentsTableComponentItem>[] = useMemo(
     () =>
-      [
-        createTableColumn<DocumentsTableComponentItem>({
-          columnId: "id",
-          compare: (a, b) => a.id.localeCompare(b.id),
-          renderHeaderCell: () => columnHeaders.idHeader,
+      columnDefinitions
+        .filter((column) => selectedColumnIds.includes(column.id))
+        .map((column) => ({
+          columnId: column.id,
+          compare: (a, b) => {
+            if (typeof a[column.id] === "string") {
+              return (a[column.id] as string).localeCompare(b[column.id] as string);
+            } else if (typeof a[column.id] === "number") {
+              return (a[column.id] as number) - (b[column.id] as number);
+            } else {
+              // Should not happen
+              return 0;
+            }
+          },
+          renderHeaderCell: () => (
+            <>
+              <span title={column.label}>{column.label}</span>
+              <Menu>
+                <MenuTrigger disableButtonEnhancement>
+                  <Button
+                    // {...restoreFocusTargetAttribute}
+                    appearance="transparent"
+                    aria-label="Select column"
+                    size="small"
+                    icon={<MoreHorizontalRegular />}
+                    style={{ position: "absolute", right: 0, backgroundColor: tokens.colorNeutralBackground1 }}
+                  />
+                </MenuTrigger>
+                <MenuPopover>
+                  <MenuList>
+                    <MenuItem key="refresh" icon={<ArrowClockwise16Regular />} onClick={onRefreshTable}>
+                      Refresh
+                    </MenuItem>
+                    {[Environment.Development, Environment.Mpac].includes(getEnvironment()) && (
+                      <>
+                        <MenuItem
+                          icon={<TextSortAscendingRegular />}
+                          onClick={(e) => onSortClick(e, column.id, "ascending")}
+                        >
+                          Sort ascending
+                        </MenuItem>
+                        <MenuItem
+                          icon={<TextSortDescendingRegular />}
+                          onClick={(e) => onSortClick(e, column.id, "descending")}
+                        >
+                          Sort descending
+                        </MenuItem>
+                        <MenuItem icon={<ArrowResetRegular />} onClick={(e) => onSortClick(e, undefined, undefined)}>
+                          Reset sorting
+                        </MenuItem>
+                        {!isColumnSelectionDisabled && (
+                          <MenuItem key="editcolumns" icon={<EditRegular />} onClick={openColumnSelectionPane}>
+                            Edit columns
+                          </MenuItem>
+                        )}
+                        <MenuDivider />
+                      </>
+                    )}
+                    <MenuItem
+                      key="keyboardresize"
+                      icon={<TableResizeColumnRegular />}
+                      onClick={columnSizing.enableKeyboardMode(column.id)}
+                    >
+                      Resize with left/right arrow keys
+                    </MenuItem>
+                    {[Environment.Development, Environment.Mpac].includes(getEnvironment()) &&
+                      !isColumnSelectionDisabled && (
+                        <MenuItem
+                          key="remove"
+                          icon={<DeleteRegular />}
+                          onClick={() => {
+                            // Remove column id from selectedColumnIds
+                            const index = selectedColumnIds.indexOf(column.id);
+                            if (index === -1) {
+                              return;
+                            }
+                            const newSelectedColumnIds = [...selectedColumnIds];
+                            newSelectedColumnIds.splice(index, 1);
+                            onColumnSelectionChange(newSelectedColumnIds);
+                          }}
+                        >
+                          Remove column
+                        </MenuItem>
+                      )}
+                  </MenuList>
+                </MenuPopover>
+              </Menu>
+            </>
+          ),
           renderCell: (item) => (
-            <TableCellLayout truncate title={item.id}>
-              {item.id}
+            <TableCellLayout truncate title={`${item[column.id]}`}>
+              {item[column.id]}
             </TableCellLayout>
           ),
-        }),
-      ].concat(
-        columnHeaders.partitionKeyHeaders.map((pkHeader) =>
-          createTableColumn<DocumentsTableComponentItem>({
-            columnId: pkHeader,
-            compare: (a, b) => a[pkHeader].localeCompare(b[pkHeader]),
-            // Show Refresh button on last column
-            renderHeaderCell: () => <span title={pkHeader}>{pkHeader}</span>,
-            renderCell: (item) => (
-              <TableCellLayout truncate title={item[pkHeader]}>
-                {item[pkHeader]}
-              </TableCellLayout>
-            ),
-          }),
-        ),
-      ),
-    [columnHeaders],
+        })),
+    [columnDefinitions, onColumnSelectionChange, selectedColumnIds],
   );
 
   const [selectionStartIndex, setSelectionStartIndex] = React.useState<number>(INITIAL_SELECTED_ROW_INDEX);
@@ -214,6 +380,7 @@ export const DocumentsTableComponent: React.FC<IDocumentsTableComponentProps> =
     columnSizing_unstable: columnSizing,
     tableRef,
     selection: { allRowsSelected, someRowsSelected, toggleAllRows, toggleRow, isRowSelected },
+    sort: { getSortDirection, setColumnSort, sort },
   } = useTableFeatures(
     {
       columns,
@@ -227,25 +394,36 @@ export const DocumentsTableComponent: React.FC<IDocumentsTableComponentProps> =
         // eslint-disable-next-line react/prop-types
         onSelectionChange: (e, data) => onSelectedRowsChange(data.selectedItems),
       }),
+      useTableSort({
+        sortState,
+        onSortChange: (e, nextSortState) => setSortState(nextSortState),
+      }),
     ],
   );
 
-  const rows: TableRowData[] = getRows((row) => {
-    const selected = isRowSelected(row.rowId);
-    return {
-      ...row,
-      onClick: (e: React.MouseEvent) => toggleRow(e, row.rowId),
-      onKeyDown: (e: React.KeyboardEvent) => {
-        if (e.key === " ") {
-          e.preventDefault();
-          toggleRow(e, row.rowId);
-        }
-      },
-      selected,
-      appearance: selected ? ("brand" as const) : ("none" as const),
-    };
+  const headerSortProps = (columnId: TableColumnId) => ({
+    // onClick: (e: React.MouseEvent) => toggleColumnSort(e, columnId),
+    sortDirection: getSortDirection(columnId),
   });
 
+  const rows: TableRowData[] = sort(
+    getRows((row) => {
+      const selected = isRowSelected(row.rowId);
+      return {
+        ...row,
+        onClick: (e: React.MouseEvent) => toggleRow(e, row.rowId),
+        onKeyDown: (e: React.KeyboardEvent) => {
+          if (e.key === " ") {
+            e.preventDefault();
+            toggleRow(e, row.rowId);
+          }
+        },
+        selected,
+        appearance: selected ? ("brand" as const) : ("none" as const),
+      };
+    }),
+  );
+
   const toggleAllKeydown = React.useCallback(
     (e: React.KeyboardEvent<HTMLDivElement>) => {
       if (e.key === " ") {
@@ -271,39 +449,53 @@ export const DocumentsTableComponent: React.FC<IDocumentsTableComponentProps> =
     ...style,
   };
 
+  const checkedValues: { [COLUMNS_MENU_NAME]: string[] } = {
+    [COLUMNS_MENU_NAME]: [],
+  };
+  columnDefinitions.forEach(
+    (columnDefinition) =>
+      selectedColumnIds.includes(columnDefinition.id) && checkedValues[COLUMNS_MENU_NAME].push(columnDefinition.id),
+  );
+
+  const openColumnSelectionPane = (): void => {
+    useSidePanel
+      .getState()
+      .openSidePanel(
+        "Select columns",
+        <TableColumnSelectionPane
+          selectedColumnIds={selectedColumnIds}
+          columnDefinitions={columnDefinitions}
+          onSelectionChange={onColumnSelectionChange}
+          defaultSelection={defaultColumnSelection}
+        />,
+      );
+  };
+
   return (
     <Table noNativeElements {...tableProps}>
-      <TableHeader>
+      <TableHeader className={styles.tableHeader}>
         <TableRow className={styles.tableRow} style={{ width: size ? size.width - 15 : "100%" }}>
           {!isSelectionDisabled && (
             <TableSelectionCell
+              key="selectcell"
               checked={allRowsSelected ? true : someRowsSelected ? "mixed" : false}
               onClick={toggleAllRows}
               onKeyDown={toggleAllKeydown}
               checkboxIndicator={{ "aria-label": "Select all rows " }}
             />
           )}
-          {columns.map((column /* index */) => (
-            <Menu openOnContext key={column.columnId}>
-              <MenuTrigger>
-                <TableHeaderCell
-                  className={styles.tableCell}
-                  key={column.columnId}
-                  {...columnSizing.getTableHeaderCellProps(column.columnId)}
-                >
-                  {column.renderHeaderCell()}
-                </TableHeaderCell>
-              </MenuTrigger>
-              <MenuPopover>
-                <MenuList>
-                  <MenuItem onClick={columnSizing.enableKeyboardMode(column.columnId)}>
-                    Keyboard Column Resizing
-                  </MenuItem>
-                </MenuList>
-              </MenuPopover>
-            </Menu>
+          {columns.map((column) => (
+            <TableHeaderCell
+              className={styles.tableCell}
+              key={column.columnId}
+              {...columnSizing.getTableHeaderCellProps(column.columnId)}
+              {...headerSortProps(column.columnId)}
+            >
+              {column.renderHeaderCell()}
+            </TableHeaderCell>
           ))}
         </TableRow>
+        <div className={styles.tableHeaderFiller}></div>
       </TableHeader>
       <TableBody>
         <List

src/Explorer/Tabs/DocumentsTabV2/SelectionHelper.ts

@@ -1,3 +1,5 @@
+import { useEffect, useRef } from "react";
+
 /**
  * Utility class to help with selection.
  * This emulates File Explorer selection behavior.
@@ -90,3 +92,12 @@ export const selectionHelper = (
     }
   }
 };
+
+// To get previous values of a state in useEffect
+export const usePrevious = <T>(value: T): T | undefined => {
+  const ref = useRef<T>();
+  useEffect(() => {
+    ref.current = value;
+  });
+  return ref.current;
+};

src/Explorer/Tabs/DocumentsTabV2/__snapshots__/DocumentsTabV2.test.tsx.snap

@@ -38,9 +38,11 @@ exports[`Documents tab (noSql API) when rendered should render the page 1`] = `
         }
       }
     >
-      <Allotment>
+      <Allotment
+        onDragEnd={[Function]}
+      >
         <Allotment.Pane
-          minSize={175}
+          minSize={55}
           preferredSize="35%"
         >
           <div
@@ -53,52 +55,61 @@ exports[`Documents tab (noSql API) when rendered should render the page 1`] = `
             }
           >
             <div
-              className="___77lcry0_0000000 f10pi13n"
+              className="___9o87uj0_0000000 ffefeo0"
             >
               <div
-                className="___1rwkz4r_0000000 f1euv43f f1l8gmrm f1e31b4d f150nix6 fy6ml6n f19g0ac"
+                style={
+                  {
+                    "height": "100%",
+                    "width": "calc(100% + -11px)",
+                  }
+                }
               >
-                <Button
-                  appearance="transparent"
-                  aria-label="Refresh"
-                  icon={<ArrowClockwise16Filled />}
-                  onClick={[Function]}
-                  onKeyDown={[Function]}
-                  size="small"
-                  style={
+                <DocumentsTableComponent
+                  collection={
                     {
-                      "color": undefined,
+                      "databaseId": "databaseId",
+                      "id": [Function],
+                    }
+                  }
+                  columnDefinitions={
+                    [
+                      {
+                        "id": "id",
+                        "isPartitionKey": false,
+                        "label": "id",
+                      },
+                    ]
+                  }
+                  defaultColumnSelection={
+                    [
+                      "id",
+                    ]
+                  }
+                  isColumnSelectionDisabled={false}
+                  isRowSelectionDisabled={true}
+                  items={[]}
+                  onColumnSelectionChange={[Function]}
+                  onItemClicked={[Function]}
+                  onRefreshTable={[Function]}
+                  onSelectedRowsChange={[Function]}
+                  selectedColumnIds={
+                    [
+                      "id",
+                    ]
+                  }
+                  selectedRows={
+                    Set {
+                      0,
                     }
                   }
                 />
               </div>
             </div>
-            <div
-              className="___9o87uj0_0000000 ffefeo0"
-            >
-              <DocumentsTableComponent
-                columnHeaders={
-                  {
-                    "idHeader": "id",
-                    "partitionKeyHeaders": [],
-                  }
-                }
-                isSelectionDisabled={true}
-                items={[]}
-                onItemClicked={[Function]}
-                onSelectedRowsChange={[Function]}
-                selectedRows={
-                  Set {
-                    0,
-                  }
-                }
-              />
-            </div>
           </div>
         </Allotment.Pane>
         <Allotment.Pane
-          minSize={300}
-          preferredSize="65%"
+          minSize={30}
         >
           <div
             style={

src/Explorer/Tabs/MongoQueryTab/MongoQueryTab.tsx

@@ -3,7 +3,7 @@ import MongoUtility from "../../../Common/MongoUtility";
 import * as ViewModels from "../../../Contracts/ViewModels";
 import Explorer from "../../Explorer";
 import { NewQueryTab } from "../QueryTab/QueryTab";
-import QueryTabComponent, { IQueryTabComponentProps, ITabAccessor } from "../QueryTab/QueryTabComponent";
+import { IQueryTabComponentProps, ITabAccessor, QueryTabComponent } from "../QueryTab/QueryTabComponent";
 
 export interface IMongoQueryTabProps {
   container: Explorer;

src/Explorer/Tabs/NotebookV2Tab.ts

@@ -152,7 +152,6 @@ export default class NotebookTabV2 extends NotebookTabBase {
         ariaLabel: saveLabel,
         children: saveButtonChildren.length && [
           {
-            iconName: "Save",
             onCommandClick: () => this.notebookComponentAdapter.notebookSave(),
             commandButtonLabel: saveLabel,
             hasPopup: false,

src/Explorer/Tabs/QueryTab/ErrorList.tsx

@@ -0,0 +1,143 @@
+import {
+  Button,
+  DataGrid,
+  DataGridBody,
+  DataGridCell,
+  DataGridHeader,
+  DataGridHeaderCell,
+  DataGridRow,
+  TableCellLayout,
+  TableColumnDefinition,
+  TableColumnSizingOptions,
+  createTableColumn,
+  tokens,
+} from "@fluentui/react-components";
+import { ErrorCircleFilled, MoreHorizontalRegular, QuestionRegular, WarningFilled } from "@fluentui/react-icons";
+import QueryError, { QueryErrorSeverity, compareSeverity } from "Common/QueryError";
+import { useQueryTabStyles } from "Explorer/Tabs/QueryTab/Styles";
+import { useNotificationConsole } from "hooks/useNotificationConsole";
+import React from "react";
+
+const severityIcons = {
+  [QueryErrorSeverity.Error]: <ErrorCircleFilled color={tokens.colorPaletteRedBackground3} />,
+  [QueryErrorSeverity.Warning]: <WarningFilled color={tokens.colorPaletteYellowForeground1} />,
+};
+
+export const ErrorList: React.FC<{ errors: QueryError[] }> = ({ errors }) => {
+  const styles = useQueryTabStyles();
+  const onErrorDetailsClick = (): boolean => {
+    useNotificationConsole.getState().expandConsole();
+    return false;
+  };
+
+  const columns: TableColumnDefinition<QueryError>[] = [
+    createTableColumn<QueryError>({
+      columnId: "code",
+      compare: (item1, item2) => item1.code.localeCompare(item2.code),
+      renderHeaderCell: () => "Code",
+      renderCell: (item) => <TableCellLayout truncate>{item.code}</TableCellLayout>,
+    }),
+    createTableColumn<QueryError>({
+      columnId: "severity",
+      compare: (item1, item2) => compareSeverity(item1.severity, item2.severity),
+      renderHeaderCell: () => "Severity",
+      renderCell: (item) => (
+        <TableCellLayout truncate media={severityIcons[item.severity]}>
+          {item.severity}
+        </TableCellLayout>
+      ),
+    }),
+    createTableColumn<QueryError>({
+      columnId: "location",
+      compare: (item1, item2) => item1.location?.start?.offset - item2.location?.start?.offset,
+      renderHeaderCell: () => "Location",
+      renderCell: (item) => (
+        <TableCellLayout truncate>
+          {item.location
+            ? item.location.start.lineNumber
+              ? `Line ${item.location.start.lineNumber}`
+              : "<unknown>"
+            : "<no location>"}
+        </TableCellLayout>
+      ),
+    }),
+    createTableColumn<QueryError>({
+      columnId: "message",
+      compare: (item1, item2) => item1.message.localeCompare(item2.message),
+      renderHeaderCell: () => "Message",
+      renderCell: (item) => (
+        <div className={styles.errorListMessageCell}>
+          <div className={styles.errorListMessage} title={item.message}>
+            {item.message}
+          </div>
+          <div className={styles.errorListMessageActions}>
+            {item.helpLink && (
+              <Button
+                as="a"
+                aria-label="Help"
+                appearance="subtle"
+                icon={<QuestionRegular />}
+                href={item.helpLink}
+                target="_blank"
+              />
+            )}
+            <Button
+              aria-label="Details"
+              appearance="subtle"
+              icon={<MoreHorizontalRegular />}
+              onClick={onErrorDetailsClick}
+            />
+          </div>
+        </div>
+      ),
+    }),
+  ];
+
+  const columnSizingOptions: TableColumnSizingOptions = {
+    code: {
+      minWidth: 90,
+      idealWidth: 90,
+      defaultWidth: 90,
+    },
+    severity: {
+      minWidth: 100,
+      idealWidth: 100,
+      defaultWidth: 100,
+    },
+    location: {
+      minWidth: 100,
+      idealWidth: 100,
+      defaultWidth: 100,
+    },
+    message: {
+      minWidth: 500,
+    },
+  };
+
+  return (
+    <DataGrid
+      data-test="QueryTab/ResultsPane/ErrorList"
+      items={errors}
+      columns={columns}
+      sortable
+      resizableColumns
+      columnSizingOptions={columnSizingOptions}
+      focusMode="composite"
+    >
+      <DataGridHeader>
+        <DataGridRow>
+          {({ renderHeaderCell }) => <DataGridHeaderCell>{renderHeaderCell()}</DataGridHeaderCell>}
+        </DataGridRow>
+      </DataGridHeader>
+      <DataGridBody<QueryError>>
+        {({ item, rowId }) => (
+          <DataGridRow<QueryError> key={rowId} data-test={`Row:${rowId}`}>
+            {({ columnId, renderCell }) => (
+              <DataGridCell data-test={`Row:${rowId}/Column:${columnId}`}>{renderCell(item)}</DataGridCell>
+            )}
+          </DataGridRow>
+        )}
+      </DataGridBody>
+    </DataGrid>
+  );
+};

src/Explorer/Tabs/QueryTab/QueryResultSection.tsx

@@ -1,544 +1,93 @@
-import {
-  DetailsList,
-  DetailsListLayoutMode,
-  IColumn,
-  Icon,
-  IconButton,
-  Link,
-  Pivot,
-  PivotItem,
-  SelectionMode,
-  Stack,
-  Text,
-  TooltipHost,
-} from "@fluentui/react";
-import { HttpHeaders, NormalizedEventKey } from "Common/Constants";
-import MongoUtility from "Common/MongoUtility";
-import { QueryMetrics } from "Contracts/DataModels";
-import { EditorReact } from "Explorer/Controls/Editor/EditorReact";
-import { IDocument } from "Explorer/Tabs/QueryTab/QueryTabComponent";
-import { userContext } from "UserContext";
-import copy from "clipboard-copy";
-import { useNotificationConsole } from "hooks/useNotificationConsole";
+import { Link } from "@fluentui/react-components";
+import QueryError from "Common/QueryError";
+import { IndeterminateProgressBar } from "Explorer/Controls/IndeterminateProgressBar";
+import { MessageBanner } from "Explorer/Controls/MessageBanner";
+import { useQueryTabStyles } from "Explorer/Tabs/QueryTab/Styles";
 import React from "react";
-import CopilotCopy from "../../../../images/CopilotCopy.svg";
-import DownloadQueryMetrics from "../../../../images/DownloadQuery.svg";
-import QueryEditorNext from "../../../../images/Query-Editor-Next.svg";
 import RunQuery from "../../../../images/RunQuery.png";
-import InfoColor from "../../../../images/info_color.svg";
 import { QueryResults } from "../../../Contracts/ViewModels";
+import { ErrorList } from "./ErrorList";
+import { ResultsView } from "./ResultsView";
 
-interface QueryResultProps {
+export interface ResultsViewProps {
   isMongoDB: boolean;
-  queryEditorContent: string;
-  error: string;
-  isExecuting: boolean;
   queryResults: QueryResults;
   executeQueryDocumentsPage: (firstItemIndex: number) => Promise<void>;
 }
 
+interface QueryResultProps extends ResultsViewProps {
+  queryEditorContent: string;
+  errors: QueryError[];
+  isExecuting: boolean;
+}
+
+const ExecuteQueryCallToAction: React.FC = () => {
+  const styles = useQueryTabStyles();
+  return (
+    <div data-test="QueryTab/ResultsPane/ExecuteCTA" className={styles.executeCallToAction}>
+      <div>
+        <p>
+          <img src={RunQuery} aria-hidden="true" />
+        </p>
+        <p>Execute a query to see the results</p>
+      </div>
+    </div>
+  );
+};
+
 export const QueryResultSection: React.FC<QueryResultProps> = ({
   isMongoDB,
   queryEditorContent,
-  error,
+  errors,
   queryResults,
-  isExecuting,
   executeQueryDocumentsPage,
+  isExecuting,
 }: QueryResultProps): JSX.Element => {
-  const queryMetrics = React.useRef(queryResults?.headers?.[HttpHeaders.queryMetrics]);
-
-  React.useEffect(() => {
-    const latestQueryMetrics = queryResults?.headers?.[HttpHeaders.queryMetrics];
-    if (latestQueryMetrics && Object.keys(latestQueryMetrics).length > 0) {
-      queryMetrics.current = latestQueryMetrics;
-    }
-  }, [queryResults]);
-
-  const onRender = (item: IDocument): JSX.Element => (
-    <>
-      <Text style={{ paddingLeft: 10, margin: 0 }}>{`${item.metric}`}</Text>
-    </>
-  );
-  const columns: IColumn[] = [
-    {
-      key: "column1",
-      name: "Description",
-      iconName: "Info",
-      isIconOnly: true,
-      minWidth: 10,
-      maxWidth: 12,
-      iconClassName: "iconheadercell",
-      data: String,
-      fieldName: "",
-      onRender: (item: IDocument) => {
-        if (item.toolTip !== "") {
-          return (
-            <>
-              <TooltipHost content={`${item.toolTip}`}>
-                <Link style={{ color: "#323130" }}>
-                  <Icon iconName="Info" ariaLabel={`${item.toolTip}`} className="panelInfoIcon" tabIndex={0} />
-                </Link>
-              </TooltipHost>
-            </>
-          );
-        } else {
-          return undefined;
-        }
-      },
-    },
-    {
-      key: "column2",
-      name: "METRIC",
-      minWidth: 200,
-      data: String,
-      fieldName: "metric",
-      onRender,
-    },
-    {
-      key: "column3",
-      name: "VALUE",
-      minWidth: 200,
-      data: String,
-      fieldName: "value",
-    },
-  ];
+  const styles = useQueryTabStyles();
   const maybeSubQuery = queryEditorContent && /.*\(.*SELECT.*\)/i.test(queryEditorContent);
-  const queryResultsString = queryResults
-    ? isMongoDB
-      ? MongoUtility.tojson(queryResults.documents, undefined, false)
-      : JSON.stringify(queryResults.documents, undefined, 4)
-    : "";
-
-  const onErrorDetailsClick = (): boolean => {
-    useNotificationConsole.getState().expandConsole();
-
-    return false;
-  };
-
-  const onErrorDetailsKeyPress = (event: React.KeyboardEvent<HTMLAnchorElement>): boolean => {
-    if (event.key === NormalizedEventKey.Space || event.key === NormalizedEventKey.Enter) {
-      onErrorDetailsClick();
-      return false;
-    }
-
-    return true;
-  };
-
-  const onDownloadQueryMetricsCsvClick = (): boolean => {
-    downloadQueryMetricsCsvData();
-    return false;
-  };
-
-  const onDownloadQueryMetricsCsvKeyPress = (event: React.KeyboardEvent<HTMLAnchorElement>): boolean => {
-    if (event.key === NormalizedEventKey.Space || NormalizedEventKey.Enter) {
-      downloadQueryMetricsCsvData();
-      return false;
-    }
-
-    return true;
-  };
-
-  const downloadQueryMetricsCsvData = (): void => {
-    const csvData: string = generateQueryMetricsCsvData();
-    if (!csvData) {
-      return;
-    }
-
-    if (navigator.msSaveBlob) {
-      // for IE and Edge
-      navigator.msSaveBlob(
-        new Blob([csvData], { type: "data:text/csv;charset=utf-8" }),
-        "PerPartitionQueryMetrics.csv",
-      );
-    } else {
-      const downloadLink: HTMLAnchorElement = document.createElement("a");
-      downloadLink.href = "data:text/csv;charset=utf-8," + encodeURI(csvData);
-      downloadLink.target = "_self";
-      downloadLink.download = "QueryMetricsPerPartition.csv";
-
-      // for some reason, FF displays the download prompt only when
-      // the link is added to the dom so we add and remove it
-      document.body.appendChild(downloadLink);
-      downloadLink.click();
-      downloadLink.remove();
-    }
-  };
-
-  const getAggregatedQueryMetrics = (): QueryMetrics => {
-    const aggregatedQueryMetrics = {
-      documentLoadTime: 0,
-      documentWriteTime: 0,
-      indexHitDocumentCount: 0,
-      outputDocumentCount: 0,
-      outputDocumentSize: 0,
-      indexLookupTime: 0,
-      retrievedDocumentCount: 0,
-      retrievedDocumentSize: 0,
-      vmExecutionTime: 0,
-      runtimeExecutionTimes: {
-        queryEngineExecutionTime: 0,
-        systemFunctionExecutionTime: 0,
-        userDefinedFunctionExecutionTime: 0,
-      },
-      totalQueryExecutionTime: 0,
-    } as QueryMetrics;
-
-    if (queryMetrics.current) {
-      Object.keys(queryMetrics.current).forEach((partitionKeyRangeId) => {
-        const queryMetricsPerPartition = queryMetrics.current[partitionKeyRangeId];
-        if (!queryMetricsPerPartition) {
-          return;
-        }
-        aggregatedQueryMetrics.documentLoadTime += queryMetricsPerPartition.documentLoadTime?.totalMilliseconds() || 0;
-        aggregatedQueryMetrics.documentWriteTime +=
-          queryMetricsPerPartition.documentWriteTime?.totalMilliseconds() || 0;
-        aggregatedQueryMetrics.indexHitDocumentCount += queryMetricsPerPartition.indexHitDocumentCount || 0;
-        aggregatedQueryMetrics.outputDocumentCount += queryMetricsPerPartition.outputDocumentCount || 0;
-        aggregatedQueryMetrics.outputDocumentSize += queryMetricsPerPartition.outputDocumentSize || 0;
-        aggregatedQueryMetrics.indexLookupTime += queryMetricsPerPartition.indexLookupTime?.totalMilliseconds() || 0;
-        aggregatedQueryMetrics.retrievedDocumentCount += queryMetricsPerPartition.retrievedDocumentCount || 0;
-        aggregatedQueryMetrics.retrievedDocumentSize += queryMetricsPerPartition.retrievedDocumentSize || 0;
-        aggregatedQueryMetrics.vmExecutionTime += queryMetricsPerPartition.vmExecutionTime?.totalMilliseconds() || 0;
-        aggregatedQueryMetrics.totalQueryExecutionTime +=
-          queryMetricsPerPartition.totalQueryExecutionTime?.totalMilliseconds() || 0;
-        aggregatedQueryMetrics.runtimeExecutionTimes.queryEngineExecutionTime +=
-          queryMetricsPerPartition.runtimeExecutionTimes?.queryEngineExecutionTime?.totalMilliseconds() || 0;
-        aggregatedQueryMetrics.runtimeExecutionTimes.systemFunctionExecutionTime +=
-          queryMetricsPerPartition.runtimeExecutionTimes?.systemFunctionExecutionTime?.totalMilliseconds() || 0;
-        aggregatedQueryMetrics.runtimeExecutionTimes.userDefinedFunctionExecutionTime +=
-          queryMetricsPerPartition.runtimeExecutionTimes?.userDefinedFunctionExecutionTime?.totalMilliseconds() || 0;
-      });
-    }
-
-    return aggregatedQueryMetrics;
-  };
-
-  const generateQueryMetricsCsvData = (): string => {
-    if (queryMetrics.current) {
-      let csvData =
-        [
-          "Partition key range id",
-          "Retrieved document count",
-          "Retrieved document size (in bytes)",
-          "Output document count",
-          "Output document size (in bytes)",
-          "Index hit document count",
-          "Index lookup time (ms)",
-          "Document load time (ms)",
-          "Query engine execution time (ms)",
-          "System function execution time (ms)",
-          "User defined function execution time (ms)",
-          "Document write time (ms)",
-        ].join(",") + "\n";
-
-      Object.keys(queryMetrics.current).forEach((partitionKeyRangeId) => {
-        const queryMetricsPerPartition = queryMetrics.current[partitionKeyRangeId];
-        csvData +=
-          [
-            partitionKeyRangeId,
-            queryMetricsPerPartition.retrievedDocumentCount,
-            queryMetricsPerPartition.retrievedDocumentSize,
-            queryMetricsPerPartition.outputDocumentCount,
-            queryMetricsPerPartition.outputDocumentSize,
-            queryMetricsPerPartition.indexHitDocumentCount,
-            queryMetricsPerPartition.indexLookupTime?.totalMilliseconds(),
-            queryMetricsPerPartition.documentLoadTime?.totalMilliseconds(),
-            queryMetricsPerPartition.runtimeExecutionTimes?.queryEngineExecutionTime?.totalMilliseconds(),
-            queryMetricsPerPartition.runtimeExecutionTimes?.systemFunctionExecutionTime?.totalMilliseconds(),
-            queryMetricsPerPartition.runtimeExecutionTimes?.userDefinedFunctionExecutionTime?.totalMilliseconds(),
-            queryMetricsPerPartition.documentWriteTime?.totalMilliseconds(),
-          ].join(",") + "\n";
-      });
-
-      return csvData;
-    }
-
-    return undefined;
-  };
-
-  const onFetchNextPageClick = async (): Promise<void> => {
-    const { firstItemIndex, itemCount } = queryResults;
-    await executeQueryDocumentsPage(firstItemIndex + itemCount - 1);
-  };
-
-  const generateQueryStatsItems = (): IDocument[] => {
-    const items: IDocument[] = [
-      {
-        metric: "Request Charge",
-        value: `${queryResults.requestCharge} RUs`,
-        toolTip: "Request Charge",
-      },
-      {
-        metric: "Showing Results",
-        value: queryResults.itemCount > 0 ? `${queryResults.firstItemIndex} - ${queryResults.lastItemIndex}` : `0 - 0`,
-        toolTip: "Showing Results",
-      },
-    ];
-
-    if (userContext.apiType === "SQL") {
-      const aggregatedQueryMetrics = getAggregatedQueryMetrics();
-      items.push(
-        {
-          metric: "Retrieved document count",
-          value: aggregatedQueryMetrics.retrievedDocumentCount?.toString() || "",
-          toolTip: "Total number of retrieved documents",
-        },
-        {
-          metric: "Retrieved document size",
-          value: `${aggregatedQueryMetrics.retrievedDocumentSize?.toString() || 0} bytes`,
-          toolTip: "Total size of retrieved documents in bytes",
-        },
-        {
-          metric: "Output document count",
-          value: aggregatedQueryMetrics.outputDocumentCount?.toString() || "",
-          toolTip: "Number of output documents",
-        },
-        {
-          metric: "Output document size",
-          value: `${aggregatedQueryMetrics.outputDocumentSize?.toString() || 0} bytes`,
-          toolTip: "Total size of output documents in bytes",
-        },
-        {
-          metric: "Index hit document count",
-          value: aggregatedQueryMetrics.indexHitDocumentCount?.toString() || "",
-          toolTip: "Total number of documents matched by the filter",
-        },
-        {
-          metric: "Index lookup time",
-          value: `${aggregatedQueryMetrics.indexLookupTime?.toString() || 0} ms`,
-          toolTip: "Time spent in physical index layer",
-        },
-        {
-          metric: "Document load time",
-          value: `${aggregatedQueryMetrics.documentLoadTime?.toString() || 0} ms`,
-          toolTip: "Time spent in loading documents",
-        },
-        {
-          metric: "Query engine execution time",
-          value: `${aggregatedQueryMetrics.runtimeExecutionTimes?.queryEngineExecutionTime?.toString() || 0} ms`,
-          toolTip:
-            "Time spent by the query engine to execute the query expression (excludes other execution times like load documents or write results)",
-        },
-        {
-          metric: "System function execution time",
-          value: `${aggregatedQueryMetrics.runtimeExecutionTimes?.systemFunctionExecutionTime?.toString() || 0} ms`,
-          toolTip: "Total time spent executing system (built-in) functions",
-        },
-        {
-          metric: "User defined function execution time",
-          value: `${
-            aggregatedQueryMetrics.runtimeExecutionTimes?.userDefinedFunctionExecutionTime?.toString() || 0
-          } ms`,
-          toolTip: "Total time spent executing user-defined functions",
-        },
-        {
-          metric: "Document write time",
-          value: `${aggregatedQueryMetrics.documentWriteTime.toString() || 0} ms`,
-          toolTip: "Time spent to write query result set to response buffer",
-        },
-      );
-    }
-
-    if (queryResults.roundTrips) {
-      items.push({
-        metric: "Round Trips",
-        value: queryResults.roundTrips?.toString(),
-        toolTip: "Number of round trips",
-      });
-    }
-
-    if (queryResults.activityId) {
-      items.push({
-        metric: "Activity id",
-        value: queryResults.activityId,
-        toolTip: "",
-      });
-    }
-
-    return items;
-  };
-
-  const onClickCopyResults = (): void => {
-    copy(queryResultsString);
-  };
 
   return (
-    <Stack style={{ height: "100%" }}>
-      {isMongoDB && queryEditorContent.length === 0 && (
-        <div className="mongoQueryHelper">
-          Start by writing a Mongo query, for example: <strong>{"{'id':'foo'}"}</strong> or{" "}
-          <strong>
-            {"{ "}
-            {" }"}
-          </strong>{" "}
-          to get all the documents.
-        </div>
-      )}
-      {maybeSubQuery && (
-        <div className="warningErrorContainer" aria-live="assertive">
-          <div className="warningErrorContent">
-            <span>
-              <img className="paneErrorIcon" src={InfoColor} alt="Error" />
-            </span>
-            <span className="warningErrorDetailsLinkContainer">
-              We detected you may be using a subquery. To learn more about subqueries effectively,{" "}
-              <a
-                href="https://learn.microsoft.com/azure/cosmos-db/nosql/query/subquery"
-                target="_blank"
-                rel="noreferrer"
-              >
-                visit the documentation
-              </a>
-            </span>
-          </div>
-        </div>
-      )}
-      {/* <!-- Query Errors Tab - Start--> */}
-      {error && (
-        <div className="active queryErrorsHeaderContainer">
-          <span className="queryErrors" data-toggle="tab">
-            Errors
-          </span>
-        </div>
-      )}
-      {/* <!-- Query Errors Tab - End --> */}
+    <div data-test="QueryTab/ResultsPane" className={styles.queryResultsPanel}>
+      {isExecuting && <IndeterminateProgressBar />}
+      <MessageBanner
+        messageId="QueryEditor.EmptyMongoQuery"
+        visible={isMongoDB && queryEditorContent.length === 0}
+        className={styles.queryResultsMessage}
+      >
+        Start by writing a Mongo query, for example: <strong>{"{'id':'foo'}"}</strong> or{" "}
+        <strong>
+          {"{ "}
+          {" }"}
+        </strong>{" "}
+        to get all the documents.
+      </MessageBanner>
+      {/* {maybeSubQuery && ( */}
+      <MessageBanner
+        messageId="QueryEditor.SubQueryWarning"
+        visible={maybeSubQuery}
+        className={styles.queryResultsMessage}
+      >
+        We detected you may be using a subquery. To learn more about subqueries effectively,{" "}
+        <Link
+          href="https://learn.microsoft.com/azure/cosmos-db/nosql/query/subquery"
+          target="_blank"
+          rel="noreferrer noopener"
+        >
+          visit the documentation
+        </Link>
+      </MessageBanner>
       {/* <!-- Query Results & Errors Content Container - Start--> */}
-      <div className="queryResultErrorContentContainer">
-        {!queryResults && !error && !isExecuting && (
-          <div className="queryEditorWatermark">
-            <p>
-              <img src={RunQuery} alt="Execute Query Watermark" />
-            </p>
-            <p className="queryEditorWatermarkText">Execute a query to see the results</p>
-          </div>
-        )}
-        {(queryResults || !!error) && (
-          <div className="queryResultsErrorsContent">
-            {!error && (
-              <Pivot aria-label="Successful execution" style={{ height: "100%" }}>
-                <PivotItem
-                  headerText="Results"
-                  headerButtonProps={{
-                    "data-order": 1,
-                    "data-title": "Results",
-                  }}
-                  style={{ height: "100%" }}
-                >
-                  <div className="result-metadata">
-                    <span>
-                      <span>
-                        {queryResults.itemCount > 0
-                          ? `${queryResults.firstItemIndex} - ${queryResults.lastItemIndex}`
-                          : `0 - 0`}
-                      </span>
-                    </span>
-                    {queryResults.hasMoreResults && (
-                      <>
-                        <span className="queryResultDivider">|</span>
-                        <span className="queryResultNextEnable">
-                          <a onClick={() => onFetchNextPageClick()}>
-                            <span>Load more</span>
-                            <img className="queryResultnextImg" src={QueryEditorNext} alt="Fetch next page" />
-                          </a>
-                        </span>
-                      </>
-                    )}
-                    <IconButton
-                      style={{
-                        height: "100%",
-                        verticalAlign: "middle",
-                        float: "right",
-                      }}
-                      iconProps={{ imageProps: { src: CopilotCopy } }}
-                      title="Copy to Clipboard"
-                      ariaLabel="Copy"
-                      onClick={onClickCopyResults}
-                    />
-                  </div>
-                  {queryResults && queryResultsString?.length > 0 && !error && (
-                    <div
-                      style={{
-                        paddingBottom: "100px",
-                        height: "100%",
-                      }}
-                    >
-                      <EditorReact
-                        language={"json"}
-                        content={queryResultsString}
-                        isReadOnly={true}
-                        ariaLabel={"Query results"}
-                      />
-                    </div>
-                  )}
-                </PivotItem>
-                <PivotItem
-                  headerText="Query Stats"
-                  headerButtonProps={{
-                    "data-order": 2,
-                    "data-title": "Query Stats",
-                  }}
-                  style={{ height: "100%", overflowY: "scroll" }}
-                >
-                  {queryResults && !error && (
-                    <div className="queryMetricsSummaryContainer">
-                      <div className="queryMetricsSummary">
-                        <h3>Query Statistics</h3>
-                        <DetailsList
-                          items={generateQueryStatsItems()}
-                          columns={columns}
-                          selectionMode={SelectionMode.none}
-                          layoutMode={DetailsListLayoutMode.justified}
-                          compact={true}
-                        />
-                      </div>
-                      {userContext.apiType === "SQL" && (
-                        <div className="downloadMetricsLinkContainer">
-                          <a
-                            id="downloadMetricsLink"
-                            role="button"
-                            tabIndex={0}
-                            onClick={() => onDownloadQueryMetricsCsvClick()}
-                            onKeyPress={(event: React.KeyboardEvent<HTMLAnchorElement>) =>
-                              onDownloadQueryMetricsCsvKeyPress(event)
-                            }
-                          >
-                            <img
-                              className="downloadCsvImg"
-                              src={DownloadQueryMetrics}
-                              alt="download query metrics csv"
-                            />
-                            <span>Per-partition query metrics (CSV)</span>
-                          </a>
-                        </div>
-                      )}
-                    </div>
-                  )}
-                </PivotItem>
-              </Pivot>
-            )}
-            {/* <!-- Query Errors Content - Start--> */}
-            {!!error && (
-              <div className="tab-pane active">
-                <div className="errorContent">
-                  <span className="errorMessage">{error}</span>
-                  <span className="errorDetailsLink">
-                    <a
-                      onClick={() => onErrorDetailsClick()}
-                      onKeyPress={(event: React.KeyboardEvent<HTMLAnchorElement>) => onErrorDetailsKeyPress(event)}
-                      id="error-display"
-                      tabIndex={0}
-                      aria-label="Error details link"
-                    >
-                      More details
-                    </a>
-                  </span>
-                </div>
-              </div>
-            )}
-            {/* <!-- Query Errors Content - End--> */}
-          </div>
-        )}
-      </div>
-    </Stack>
+      {errors.length > 0 ? (
+        <ErrorList errors={errors} />
+      ) : queryResults ? (
+        <ResultsView
+          queryResults={queryResults}
+          executeQueryDocumentsPage={executeQueryDocumentsPage}
+          isMongoDB={isMongoDB}
+        />
+      ) : (
+        <ExecuteQueryCallToAction />
+      )}
+    </div>
   );
 };

src/Explorer/Tabs/QueryTab/QueryTab.tsx

@@ -7,10 +7,11 @@ import * as DataModels from "../../../Contracts/DataModels";
 import type { QueryTabOptions } from "../../../Contracts/ViewModels";
 import { useTabs } from "../../../hooks/useTabs";
 import Explorer from "../../Explorer";
-import QueryTabComponent, {
+import {
   IQueryTabComponentProps,
   ITabAccessor,
-  QueryTabFunctionComponent,
+  QueryTabComponent,
+  QueryTabCopilotComponent,
 } from "../../Tabs/QueryTab/QueryTabComponent";
 import TabsBase from "../TabsBase";
 
@@ -49,7 +50,7 @@ export class NewQueryTab extends TabsBase {
   public render(): JSX.Element {
     return userContext.apiType === "SQL" ? (
       <CopilotProvider>
-        <QueryTabFunctionComponent {...this.iQueryTabComponentProps} />
+        <QueryTabCopilotComponent {...this.iQueryTabComponentProps} />
       </CopilotProvider>
     ) : (
       <QueryTabComponent {...this.iQueryTabComponentProps} />

src/Explorer/Tabs/QueryTab/QueryTabComponent.test.tsx

@@ -2,11 +2,14 @@ import { fireEvent, render } from "@testing-library/react";
 import { CollectionTabKind } from "Contracts/ViewModels";
 import { CopilotProvider } from "Explorer/QueryCopilot/QueryCopilotContext";
 import { QueryCopilotPromptbar } from "Explorer/QueryCopilot/QueryCopilotPromptbar";
-import QueryTabComponent, {
+import { CopilotSubComponentNames } from "Explorer/QueryCopilot/QueryCopilotUtilities";
+import {
   IQueryTabComponentProps,
-  QueryTabFunctionComponent,
+  QueryTabComponent,
+  QueryTabCopilotComponent,
 } from "Explorer/Tabs/QueryTab/QueryTabComponent";
 import TabsBase from "Explorer/Tabs/TabsBase";
+import { AppStateComponentNames, StorePath } from "Shared/AppStatePersistenceUtility";
 import { updateUserContext, userContext } from "UserContext";
 import { mount } from "enzyme";
 import { useQueryCopilot } from "hooks/useQueryCopilot";
@@ -15,6 +18,24 @@ import React from "react";
 
 jest.mock("Explorer/Controls/Editor/EditorReact");
 
+const loadState = (path: StorePath) => {
+  if (
+    path.componentName === AppStateComponentNames.QueryCopilot &&
+    path.subComponentName === CopilotSubComponentNames.toggleStatus
+  ) {
+    return true;
+  } else {
+    return undefined;
+  }
+};
+
+jest.mock("Shared/AppStatePersistenceUtility", () => ({
+  loadState,
+  AppStateComponentNames: {
+    QueryCopilot: "QueryCopilot",
+  },
+}));
+
 describe("QueryTabComponent", () => {
   const mockStore = useQueryCopilot.getState();
   beforeEach(() => {
@@ -31,7 +52,7 @@ describe("QueryTabComponent", () => {
       },
     });
     const propsMock: Readonly<IQueryTabComponentProps> = {
-      collection: { databaseId: "CopilotSampleDb" },
+      collection: { databaseId: "CopilotSampleDB" },
       onTabAccessor: () => jest.fn(),
       isExecutionError: false,
       tabId: "mockTabId",
@@ -42,13 +63,24 @@ describe("QueryTabComponent", () => {
 
     const { container } = render(<QueryTabComponent {...propsMock} />);
 
-    const launchCopilotButton = container.querySelector(".queryEditorWatermarkText");
+    const launchCopilotButton = container.querySelector('[data-test="QueryTab/ResultsPane/ExecuteCTA"]');
     fireEvent.keyDown(launchCopilotButton, { key: "c", altKey: true });
 
     expect(mockStore.setShowCopilotSidebar).toHaveBeenCalledWith(true);
   });
 
   it("copilot should be enabled by default when tab is active", () => {
+    updateUserContext({
+      databaseAccount: {
+        name: "name",
+        properties: undefined,
+        id: "",
+        location: "",
+        type: "",
+        kind: "",
+      },
+    });
+
     useQueryCopilot.getState().setCopilotEnabled(true);
     useQueryCopilot.getState().setCopilotUserDBEnabled(true);
     const activeTab = new TabsBase({
@@ -70,7 +102,7 @@ describe("QueryTabComponent", () => {
 
     const container = mount(
       <CopilotProvider>
-        <QueryTabFunctionComponent {...propsMock} />
+        <QueryTabCopilotComponent {...propsMock} />
       </CopilotProvider>,
     );
     expect(container.find(QueryCopilotPromptbar).exists()).toBe(true);

src/Explorer/Tabs/QueryTab/QueryTabComponent.tsx

@@ -1,15 +1,21 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable no-console */
 import { FeedOptions, QueryOperationOptions } from "@azure/cosmos";
+import QueryError, { createMonacoErrorLocationResolver, createMonacoMarkersForQueryErrors } from "Common/QueryError";
 import { SplitterDirection } from "Common/Splitter";
 import { Platform, configContext } from "ConfigContext";
 import { useDialog } from "Explorer/Controls/Dialog";
+import { monaco } from "Explorer/LazyMonaco";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { QueryCopilotFeedbackModal } from "Explorer/QueryCopilot/Modal/QueryCopilotFeedbackModal";
 import { useCopilotStore } from "Explorer/QueryCopilot/QueryCopilotContext";
 import { QueryCopilotPromptbar } from "Explorer/QueryCopilot/QueryCopilotPromptbar";
+import { readCopilotToggleStatus, saveCopilotToggleStatus } from "Explorer/QueryCopilot/QueryCopilotUtilities";
 import { OnExecuteQueryClick, QueryDocumentsPerPage } from "Explorer/QueryCopilot/Shared/QueryCopilotClient";
 import { QueryCopilotSidebar } from "Explorer/QueryCopilot/V2/Sidebar/QueryCopilotSidebar";
 import { QueryResultSection } from "Explorer/Tabs/QueryTab/QueryResultSection";
+import { QueryTabStyles, useQueryTabStyles } from "Explorer/Tabs/QueryTab/Styles";
+import { CosmosFluentProvider } from "Explorer/Theme/ThemeUtil";
 import { useSelectedNode } from "Explorer/useSelectedNode";
 import { KeyboardAction } from "KeyboardShortcuts";
 import { QueryConstants } from "Shared/Constants";
@@ -21,10 +27,10 @@ import {
   ruThresholdEnabled,
 } from "Shared/StorageUtility";
 import { Action } from "Shared/Telemetry/TelemetryConstants";
+import { Allotment } from "allotment";
 import { QueryCopilotState, useQueryCopilot } from "hooks/useQueryCopilot";
 import { TabsState, useTabs } from "hooks/useTabs";
-import React, { Fragment } from "react";
-import SplitterLayout from "react-splitter-layout";
+import React, { Fragment, createRef } from "react";
 import "react-splitter-layout/lib/index.css";
 import { format } from "react-string-format";
 import QueryCommandIcon from "../../../../images/CopilotCommand.svg";
@@ -35,7 +41,6 @@ import ExecuteQueryIcon from "../../../../images/ExecuteQuery.svg";
 import CheckIcon from "../../../../images/check-1.svg";
 import SaveQueryIcon from "../../../../images/save-cosmos.svg";
 import { NormalizedEventKey } from "../../../Common/Constants";
-import { getErrorMessage } from "../../../Common/ErrorHandlingUtils";
 import * as HeadersUtility from "../../../Common/HeadersUtility";
 import { MinimalQueryIterator } from "../../../Common/IteratorUtilities";
 import { queryIterator } from "../../../Common/MongoProxyClient";
@@ -43,7 +48,6 @@ import { queryDocuments } from "../../../Common/dataAccess/queryDocuments";
 import { queryDocumentsPage } from "../../../Common/dataAccess/queryDocumentsPage";
 import * as DataModels from "../../../Contracts/DataModels";
 import * as ViewModels from "../../../Contracts/ViewModels";
-import * as StringUtility from "../../../Shared/StringUtility";
 import * as TelemetryProcessor from "../../../Shared/Telemetry/TelemetryProcessor";
 import { userContext } from "../../../UserContext";
 import * as QueryUtils from "../../../Utils/QueryUtils";
@@ -51,7 +55,6 @@ import { useSidePanel } from "../../../hooks/useSidePanel";
 import { CommandButtonComponentProps } from "../../Controls/CommandButton/CommandButtonComponent";
 import { EditorReact } from "../../Controls/Editor/EditorReact";
 import Explorer from "../../Explorer";
-import { useCommandBar } from "../../Menus/CommandBar/CommandBarComponentAdapter";
 import { BrowseQueriesPane } from "../../Panes/BrowseQueriesPane/BrowseQueriesPane";
 import { SaveQueryPane } from "../../Panes/SaveQueryPane/SaveQueryPane";
 import TabsBase from "../TabsBase";
@@ -102,8 +105,9 @@ interface IQueryTabStates {
   toggleState: ToggleState;
   sqlQueryEditorContent: string;
   selectedContent: string;
+  selection?: monaco.Selection;
+  executedSelection?: monaco.Selection; // We need to capture the selection that was used when executing, in case the user changes their section while the query is executing.
   queryResults: ViewModels.QueryResults;
-  error: string;
   isExecutionError: boolean;
   isExecuting: boolean;
   showCopilotSidebar: boolean;
@@ -112,9 +116,12 @@ interface IQueryTabStates {
   copilotActive: boolean;
   currentTabActive: boolean;
   queryResultsView: SplitterDirection;
+  errors?: QueryError[];
+  modelMarkers?: monaco.editor.IMarkerData[];
 }
 
-export const QueryTabFunctionComponent = (props: IQueryTabComponentProps): any => {
+export const QueryTabCopilotComponent = (props: IQueryTabComponentProps): any => {
+  const styles = useQueryTabStyles();
   const copilotStore = useCopilotStore();
   const isSampleCopilotActive = useSelectedNode.getState().isQueryCopilotCollectionSelected();
   const queryTabProps = {
@@ -125,10 +132,20 @@ export const QueryTabFunctionComponent = (props: IQueryTabComponentProps): any =
     isSampleCopilotActive: isSampleCopilotActive,
     copilotStore: copilotStore,
   };
-  return <QueryTabComponent {...queryTabProps}></QueryTabComponent>;
+  return <QueryTabComponentImpl styles={styles} {...queryTabProps}></QueryTabComponentImpl>;
 };
 
-export default class QueryTabComponent extends React.Component<IQueryTabComponentProps, IQueryTabStates> {
+export const QueryTabComponent = (props: IQueryTabComponentProps): any => {
+  const styles = useQueryTabStyles();
+  return <QueryTabComponentImpl styles={styles} {...props}></QueryTabComponentImpl>;
+};
+
+type QueryTabComponentImplProps = IQueryTabComponentProps & {
+  styles: QueryTabStyles;
+};
+
+// Inner (legacy) class component. We only use this component via one of the two functional components above (since we need to use the `useQueryTabStyles` hook).
+class QueryTabComponentImpl extends React.Component<QueryTabComponentImplProps, IQueryTabStates> {
   public queryEditorId: string;
   public executeQueryButton: Button;
   public saveQueryButton: Button;
@@ -139,16 +156,19 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
   public isCopilotTabActive: boolean;
   private _iterator: MinimalQueryIterator;
   private queryAbortController: AbortController;
+  queryEditor: React.RefObject<EditorReact>;
 
-  constructor(props: IQueryTabComponentProps) {
+  constructor(props: QueryTabComponentImplProps) {
     super(props);
 
+    this.queryEditor = createRef<EditorReact>();
+
     this.state = {
       toggleState: ToggleState.Result,
       sqlQueryEditorContent: props.isPreferredApiMongoDB ? "{}" : props.queryText || "SELECT * FROM c",
       selectedContent: "",
       queryResults: undefined,
-      error: "",
+      errors: [],
       isExecutionError: this.props.isExecutionError,
       isExecuting: false,
       showCopilotSidebar: useQueryCopilot.getState().showCopilotSidebar,
@@ -189,13 +209,7 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
 
   private _queryCopilotActive(): boolean {
     if (this.props.copilotEnabled) {
-      const cachedCopilotToggleStatus: string = localStorage.getItem(
-        `${userContext.databaseAccount?.id}-queryCopilotToggleStatus`,
-      );
-      const copilotInitialActive: boolean = cachedCopilotToggleStatus
-        ? StringUtility.toBoolean(cachedCopilotToggleStatus)
-        : true;
-      return copilotInitialActive;
+      return readCopilotToggleStatus(userContext.databaseAccount);
     }
     return false;
   }
@@ -221,9 +235,10 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
 
   public onExecuteQueryClick = async (): Promise<void> => {
     this._iterator = undefined;
+
     setTimeout(async () => {
       await this._executeQueryDocumentsPage(0);
-    }, 100);
+    }, 100); // TODO: Revert this
     if (this.state.copilotActive) {
       const query = this.state.sqlQueryEditorContent.split("\r\n")?.pop();
       const isqueryEdited = this.props.copilotStore.generatedQuery && this.props.copilotStore.generatedQuery !== query;
@@ -302,23 +317,22 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
   }
 
   private async _executeQueryDocumentsPage(firstItemIndex: number): Promise<void> {
+    // Capture the query content and the selection being executed (if any).
+    const query = this.state.selectedContent || this.state.sqlQueryEditorContent;
+    const selection = this.state.selection;
+    this.setState({
+      // Track the executed selection so that we can evaluate error positions relative to it, even if the user changes their current selection.
+      executedSelection: selection,
+    });
+
     this.queryAbortController = new AbortController();
     if (this._iterator === undefined) {
       this._iterator = this.props.isPreferredApiMongoDB
-        ? queryIterator(
-            this.props.collection.databaseId,
-            this.props.viewModelcollection,
-            this.state.selectedContent || this.state.sqlQueryEditorContent,
-          )
-        : queryDocuments(
-            this.props.collection.databaseId,
-            this.props.collection.id(),
-            this.state.selectedContent || this.state.sqlQueryEditorContent,
-            {
-              enableCrossPartitionQuery: HeadersUtility.shouldEnableCrossPartitionKey(),
-              abortSignal: this.queryAbortController.signal,
-            } as unknown as FeedOptions,
-          );
+        ? queryIterator(this.props.collection.databaseId, this.props.viewModelcollection, query)
+        : queryDocuments(this.props.collection.databaseId, this.props.collection.id(), query, {
+            enableCrossPartitionQuery: HeadersUtility.shouldEnableCrossPartitionKey(),
+            abortSignal: this.queryAbortController.signal,
+          } as unknown as FeedOptions);
     }
 
     await this._queryDocumentsPage(firstItemIndex);
@@ -383,18 +397,22 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
         firstItemIndex,
         queryDocuments,
       );
-      this.setState({ queryResults, error: "" });
+      this.setState({ queryResults, errors: [] });
     } catch (error) {
       this.props.tabsBaseInstance.isExecutionError(true);
       this.setState({
         isExecutionError: true,
       });
-      const errorMessage = getErrorMessage(error);
-      this.setState({
-        error: errorMessage,
-      });
 
-      document.getElementById("error-display").focus();
+      // Try to parse this as a query error
+      const queryErrors = QueryError.tryParse(
+        error,
+        createMonacoErrorLocationResolver(this.queryEditor.current.editor, this.state.executedSelection),
+      );
+      this.setState({
+        errors: queryErrors,
+        modelMarkers: createMonacoMarkersForQueryErrors(queryErrors),
+      });
     } finally {
       this.props.tabsBaseInstance.isExecuting(false);
       this.setState({
@@ -560,7 +578,7 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
   private _toggleCopilot = (active: boolean) => {
     this.setState({ copilotActive: active });
     useQueryCopilot.getState().setCopilotEnabledforExecution(active);
-    localStorage.setItem(`${userContext.databaseAccount?.id}-queryCopilotToggleStatus`, active.toString());
+    saveCopilotToggleStatus(userContext.databaseAccount, active);
 
     TelemetryProcessor.traceSuccess(active ? Action.ActivateQueryCopilot : Action.DeactivateQueryCopilot, {
       databaseName: this.props.collection.databaseId,
@@ -584,6 +602,9 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
     this.setState({
       sqlQueryEditorContent: newContent,
       queryCopilotGeneratedQuery: "",
+
+      // Clear the markers when the user edits the document.
+      modelMarkers: [],
     });
     if (this.isPreferredApiMongoDB) {
       if (newContent.length > 0) {
@@ -604,14 +625,16 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
     useCommandBar.getState().setContextButtons(this.getTabsButtons());
   }
 
-  public onSelectedContent(selectedContent: string): void {
+  public onSelectedContent(selectedContent: string, selection: monaco.Selection): void {
     if (selectedContent.trim().length > 0) {
       this.setState({
         selectedContent,
+        selection,
       });
     } else {
       this.setState({
         selectedContent: "",
+        selection: undefined,
       });
     }
 
@@ -668,9 +691,10 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
   }
 
   private getEditorAndQueryResult(): JSX.Element {
+    const vertical = this.state.queryResultsView === SplitterDirection.Horizontal;
     return (
       <Fragment>
-        <div className="tab-pane" id={this.props.tabId} role="tabpanel">
+        <CosmosFluentProvider id={this.props.tabId} className={this.props.styles.queryTab} role="tabpanel">
           {this.props.copilotEnabled && this.state.currentTabActive && this.state.copilotActive && (
             <QueryCopilotPromptbar
               explorer={this.props.collection.container}
@@ -679,40 +703,33 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
               containerId={this.props.collection.id()}
             ></QueryCopilotPromptbar>
           )}
-          <div className="tabPaneContentContainer">
-            <SplitterLayout
-              primaryIndex={0}
-              primaryMinSize={20}
-              secondaryMinSize={20}
-              // Percentage is a bit better when the splitter flips from vertical to horizontal.
-              percentage={true}
-              // NOTE: It is intentional that this looks reversed!
-              // The 'vertical' property refers to the stacking of the panes so is the opposite of the orientation of the splitter itself
-              // (vertically stacked => horizontal splitter)
-              // Our setting refers to the orientation of the splitter, so we need to reverse it here.
-              vertical={this.state.queryResultsView === SplitterDirection.Horizontal}
-            >
-              <Fragment>
-                <div className="queryEditor" style={{ height: "100%" }}>
-                  <EditorReact
-                    language={"sql"}
-                    content={this.getEditorContent()}
-                    isReadOnly={false}
-                    wordWrap={"on"}
-                    ariaLabel={"Editing Query"}
-                    lineNumbers={"on"}
-                    onContentChanged={(newContent: string) => this.onChangeContent(newContent)}
-                    onContentSelected={(selectedContent: string) => this.onSelectedContent(selectedContent)}
-                  />
-                </div>
-              </Fragment>
+          {/* Set 'key' to the value of vertical to force re-rendering when vertical changes, to work around https://github.com/johnwalley/allotment/issues/457 */}
+          <Allotment key={vertical.toString()} vertical={vertical}>
+            <Allotment.Pane data-test="QueryTab/EditorPane">
+              <EditorReact
+                ref={this.queryEditor}
+                className={this.props.styles.queryEditor}
+                language={"sql"}
+                content={this.getEditorContent()}
+                modelMarkers={this.state.modelMarkers}
+                isReadOnly={false}
+                wordWrap={"on"}
+                ariaLabel={"Editing Query"}
+                lineNumbers={"on"}
+                onContentChanged={(newContent: string) => this.onChangeContent(newContent)}
+                onContentSelected={(selectedContent: string, selection: monaco.Selection) =>
+                  this.onSelectedContent(selectedContent, selection)
+                }
+              />
+            </Allotment.Pane>
+            <Allotment.Pane>
               {this.props.isSampleCopilotActive ? (
                 <QueryResultSection
                   isMongoDB={this.props.isPreferredApiMongoDB}
                   queryEditorContent={this.state.sqlQueryEditorContent}
-                  error={this.props.copilotStore?.errorMessage}
-                  queryResults={this.props.copilotStore?.queryResults}
+                  errors={this.props.copilotStore?.errors}
                   isExecuting={this.props.copilotStore?.isExecuting}
+                  queryResults={this.props.copilotStore?.queryResults}
                   executeQueryDocumentsPage={(firstItemIndex: number) =>
                     QueryDocumentsPerPage(
                       firstItemIndex,
@@ -725,17 +742,17 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
                 <QueryResultSection
                   isMongoDB={this.props.isPreferredApiMongoDB}
                   queryEditorContent={this.state.sqlQueryEditorContent}
-                  error={this.state.error}
-                  queryResults={this.state.queryResults}
+                  errors={this.state.errors}
                   isExecuting={this.state.isExecuting}
+                  queryResults={this.state.queryResults}
                   executeQueryDocumentsPage={(firstItemIndex: number) =>
                     this._executeQueryDocumentsPage(firstItemIndex)
                   }
                 />
               )}
-            </SplitterLayout>
-          </div>
-        </div>
+            </Allotment.Pane>
+          </Allotment>
+        </CosmosFluentProvider>
         {this.props.copilotEnabled && this.props.copilotStore?.showFeedbackModal && (
           <QueryCopilotFeedbackModal
             explorer={this.props.collection.container}
@@ -751,7 +768,7 @@ export default class QueryTabComponent extends React.Component<IQueryTabComponen
   render(): JSX.Element {
     const shouldScaleElements = this.state.showCopilotSidebar && this.isCopilotTabActive;
     return (
-      <div style={{ display: "flex", flexDirection: "row", height: "100%" }}>
+      <div data-test="QueryTab" style={{ display: "flex", flexDirection: "row", height: "100%" }}>
         <div style={{ width: shouldScaleElements ? "70%" : "100%", height: "100%" }}>
           {this.getEditorAndQueryResult()}
         </div>

src/Explorer/Tabs/QueryTab/ResultsView.tsx

@@ -0,0 +1,396 @@
+import {
+  Button,
+  DataGrid,
+  DataGridBody,
+  DataGridCell,
+  DataGridHeader,
+  DataGridHeaderCell,
+  DataGridRow,
+  SelectTabData,
+  SelectTabEvent,
+  Tab,
+  TabList,
+  TableColumnDefinition,
+  createTableColumn,
+} from "@fluentui/react-components";
+import { ArrowDownloadRegular, CopyRegular } from "@fluentui/react-icons";
+import { HttpHeaders } from "Common/Constants";
+import MongoUtility from "Common/MongoUtility";
+import { QueryMetrics } from "Contracts/DataModels";
+import { EditorReact } from "Explorer/Controls/Editor/EditorReact";
+import { IDocument } from "Explorer/Tabs/QueryTab/QueryTabComponent";
+import { useQueryTabStyles } from "Explorer/Tabs/QueryTab/Styles";
+import { userContext } from "UserContext";
+import copy from "clipboard-copy";
+import React, { useCallback, useState } from "react";
+import { ResultsViewProps } from "./QueryResultSection";
+
+enum ResultsTabs {
+  Results = "results",
+  QueryStats = "queryStats",
+}
+
+const ResultsTab: React.FC<ResultsViewProps> = ({ queryResults, isMongoDB, executeQueryDocumentsPage }) => {
+  const styles = useQueryTabStyles();
+  const queryResultsString = queryResults
+    ? isMongoDB
+      ? MongoUtility.tojson(queryResults.documents, undefined, false)
+      : JSON.stringify(queryResults.documents, undefined, 4)
+    : "";
+
+  const onClickCopyResults = (): void => {
+    copy(queryResultsString);
+  };
+
+  const onFetchNextPageClick = async (): Promise<void> => {
+    const { firstItemIndex, itemCount } = queryResults;
+    await executeQueryDocumentsPage(firstItemIndex + itemCount - 1);
+  };
+
+  return (
+    <>
+      <div className={styles.queryResultsBar}>
+        <div>
+          {queryResults.itemCount > 0 ? `${queryResults.firstItemIndex} - ${queryResults.lastItemIndex}` : `0 - 0`}
+        </div>
+        {queryResults.hasMoreResults && (
+          <a href="#" onClick={() => onFetchNextPageClick()}>
+            Load more
+          </a>
+        )}
+        <div className={styles.flexGrowSpacer} />
+        <Button
+          size="small"
+          appearance="transparent"
+          icon={<CopyRegular />}
+          title="Copy to Clipboard"
+          aria-label="Copy"
+          onClick={onClickCopyResults}
+        />
+      </div>
+      <div className={styles.queryResultsViewer}>
+        <EditorReact language={"json"} content={queryResultsString} isReadOnly={true} ariaLabel={"Query results"} />
+      </div>
+    </>
+  );
+};
+
+const QueryStatsTab: React.FC<Pick<ResultsViewProps, "queryResults">> = ({ queryResults }) => {
+  const styles = useQueryTabStyles();
+  const queryMetrics = React.useRef(queryResults?.headers?.[HttpHeaders.queryMetrics]);
+  React.useEffect(() => {
+    const latestQueryMetrics = queryResults?.headers?.[HttpHeaders.queryMetrics];
+    if (latestQueryMetrics && Object.keys(latestQueryMetrics).length > 0) {
+      queryMetrics.current = latestQueryMetrics;
+    }
+  }, [queryResults]);
+
+  const getAggregatedQueryMetrics = (): QueryMetrics => {
+    const aggregatedQueryMetrics = {
+      documentLoadTime: 0,
+      documentWriteTime: 0,
+      indexHitDocumentCount: 0,
+      outputDocumentCount: 0,
+      outputDocumentSize: 0,
+      indexLookupTime: 0,
+      retrievedDocumentCount: 0,
+      retrievedDocumentSize: 0,
+      vmExecutionTime: 0,
+      runtimeExecutionTimes: {
+        queryEngineExecutionTime: 0,
+        systemFunctionExecutionTime: 0,
+        userDefinedFunctionExecutionTime: 0,
+      },
+      totalQueryExecutionTime: 0,
+    } as QueryMetrics;
+
+    if (queryMetrics.current) {
+      Object.keys(queryMetrics.current).forEach((partitionKeyRangeId) => {
+        const queryMetricsPerPartition = queryMetrics.current[partitionKeyRangeId];
+        if (!queryMetricsPerPartition) {
+          return;
+        }
+        aggregatedQueryMetrics.documentLoadTime += queryMetricsPerPartition.documentLoadTime?.totalMilliseconds() || 0;
+        aggregatedQueryMetrics.documentWriteTime +=
+          queryMetricsPerPartition.documentWriteTime?.totalMilliseconds() || 0;
+        aggregatedQueryMetrics.indexHitDocumentCount += queryMetricsPerPartition.indexHitDocumentCount || 0;
+        aggregatedQueryMetrics.outputDocumentCount += queryMetricsPerPartition.outputDocumentCount || 0;
+        aggregatedQueryMetrics.outputDocumentSize += queryMetricsPerPartition.outputDocumentSize || 0;
+        aggregatedQueryMetrics.indexLookupTime += queryMetricsPerPartition.indexLookupTime?.totalMilliseconds() || 0;
+        aggregatedQueryMetrics.retrievedDocumentCount += queryMetricsPerPartition.retrievedDocumentCount || 0;
+        aggregatedQueryMetrics.retrievedDocumentSize += queryMetricsPerPartition.retrievedDocumentSize || 0;
+        aggregatedQueryMetrics.vmExecutionTime += queryMetricsPerPartition.vmExecutionTime?.totalMilliseconds() || 0;
+        aggregatedQueryMetrics.totalQueryExecutionTime +=
+          queryMetricsPerPartition.totalQueryExecutionTime?.totalMilliseconds() || 0;
+        aggregatedQueryMetrics.runtimeExecutionTimes.queryEngineExecutionTime +=
+          queryMetricsPerPartition.runtimeExecutionTimes?.queryEngineExecutionTime?.totalMilliseconds() || 0;
+        aggregatedQueryMetrics.runtimeExecutionTimes.systemFunctionExecutionTime +=
+          queryMetricsPerPartition.runtimeExecutionTimes?.systemFunctionExecutionTime?.totalMilliseconds() || 0;
+        aggregatedQueryMetrics.runtimeExecutionTimes.userDefinedFunctionExecutionTime +=
+          queryMetricsPerPartition.runtimeExecutionTimes?.userDefinedFunctionExecutionTime?.totalMilliseconds() || 0;
+      });
+    }
+
+    return aggregatedQueryMetrics;
+  };
+
+  const columns: TableColumnDefinition<IDocument>[] = [
+    createTableColumn<IDocument>({
+      columnId: "metric",
+      renderHeaderCell: () => "Metric",
+      renderCell: (item) => item.metric,
+    }),
+    createTableColumn<IDocument>({
+      columnId: "value",
+      renderHeaderCell: () => "Value",
+      renderCell: (item) => item.value,
+    }),
+  ];
+
+  const generateQueryStatsItems = (): IDocument[] => {
+    const items: IDocument[] = [
+      {
+        metric: "Request Charge",
+        value: `${queryResults.requestCharge} RUs`,
+        toolTip: "Request Charge",
+      },
+      {
+        metric: "Showing Results",
+        value: queryResults.itemCount > 0 ? `${queryResults.firstItemIndex} - ${queryResults.lastItemIndex}` : `0 - 0`,
+        toolTip: "Showing Results",
+      },
+    ];
+
+    if (userContext.apiType === "SQL") {
+      const aggregatedQueryMetrics = getAggregatedQueryMetrics();
+      items.push(
+        {
+          metric: "Retrieved document count",
+          value: aggregatedQueryMetrics.retrievedDocumentCount?.toString() || "",
+          toolTip: "Total number of retrieved documents",
+        },
+        {
+          metric: "Retrieved document size",
+          value: `${aggregatedQueryMetrics.retrievedDocumentSize?.toString() || 0} bytes`,
+          toolTip: "Total size of retrieved documents in bytes",
+        },
+        {
+          metric: "Output document count",
+          value: aggregatedQueryMetrics.outputDocumentCount?.toString() || "",
+          toolTip: "Number of output documents",
+        },
+        {
+          metric: "Output document size",
+          value: `${aggregatedQueryMetrics.outputDocumentSize?.toString() || 0} bytes`,
+          toolTip: "Total size of output documents in bytes",
+        },
+        {
+          metric: "Index hit document count",
+          value: aggregatedQueryMetrics.indexHitDocumentCount?.toString() || "",
+          toolTip: "Total number of documents matched by the filter",
+        },
+        {
+          metric: "Index lookup time",
+          value: `${aggregatedQueryMetrics.indexLookupTime?.toString() || 0} ms`,
+          toolTip: "Time spent in physical index layer",
+        },
+        {
+          metric: "Document load time",
+          value: `${aggregatedQueryMetrics.documentLoadTime?.toString() || 0} ms`,
+          toolTip: "Time spent in loading documents",
+        },
+        {
+          metric: "Query engine execution time",
+          value: `${aggregatedQueryMetrics.runtimeExecutionTimes?.queryEngineExecutionTime?.toString() || 0} ms`,
+          toolTip:
+            "Time spent by the query engine to execute the query expression (excludes other execution times like load documents or write results)",
+        },
+        {
+          metric: "System function execution time",
+          value: `${aggregatedQueryMetrics.runtimeExecutionTimes?.systemFunctionExecutionTime?.toString() || 0} ms`,
+          toolTip: "Total time spent executing system (built-in) functions",
+        },
+        {
+          metric: "User defined function execution time",
+          value: `${
+            aggregatedQueryMetrics.runtimeExecutionTimes?.userDefinedFunctionExecutionTime?.toString() || 0
+          } ms`,
+          toolTip: "Total time spent executing user-defined functions",
+        },
+        {
+          metric: "Document write time",
+          value: `${aggregatedQueryMetrics.documentWriteTime.toString() || 0} ms`,
+          toolTip: "Time spent to write query result set to response buffer",
+        },
+      );
+    }
+
+    if (queryResults.roundTrips) {
+      items.push({
+        metric: "Round Trips",
+        value: queryResults.roundTrips?.toString(),
+        toolTip: "Number of round trips",
+      });
+    }
+
+    if (queryResults.activityId) {
+      items.push({
+        metric: "Activity id",
+        value: queryResults.activityId,
+        toolTip: "",
+      });
+    }
+
+    return items;
+  };
+
+  const generateQueryMetricsCsvData = (): string => {
+    if (queryMetrics.current) {
+      let csvData =
+        [
+          "Partition key range id",
+          "Retrieved document count",
+          "Retrieved document size (in bytes)",
+          "Output document count",
+          "Output document size (in bytes)",
+          "Index hit document count",
+          "Index lookup time (ms)",
+          "Document load time (ms)",
+          "Query engine execution time (ms)",
+          "System function execution time (ms)",
+          "User defined function execution time (ms)",
+          "Document write time (ms)",
+        ].join(",") + "\n";
+
+      Object.keys(queryMetrics.current).forEach((partitionKeyRangeId) => {
+        const queryMetricsPerPartition = queryMetrics.current[partitionKeyRangeId];
+        csvData +=
+          [
+            partitionKeyRangeId,
+            queryMetricsPerPartition.retrievedDocumentCount,
+            queryMetricsPerPartition.retrievedDocumentSize,
+            queryMetricsPerPartition.outputDocumentCount,
+            queryMetricsPerPartition.outputDocumentSize,
+            queryMetricsPerPartition.indexHitDocumentCount,
+            queryMetricsPerPartition.indexLookupTime?.totalMilliseconds(),
+            queryMetricsPerPartition.documentLoadTime?.totalMilliseconds(),
+            queryMetricsPerPartition.runtimeExecutionTimes?.queryEngineExecutionTime?.totalMilliseconds(),
+            queryMetricsPerPartition.runtimeExecutionTimes?.systemFunctionExecutionTime?.totalMilliseconds(),
+            queryMetricsPerPartition.runtimeExecutionTimes?.userDefinedFunctionExecutionTime?.totalMilliseconds(),
+            queryMetricsPerPartition.documentWriteTime?.totalMilliseconds(),
+          ].join(",") + "\n";
+      });
+
+      return csvData;
+    }
+
+    return undefined;
+  };
+
+  const downloadQueryMetricsCsvData = (): void => {
+    const csvData: string = generateQueryMetricsCsvData();
+    if (!csvData) {
+      return;
+    }
+
+    if (navigator.msSaveBlob) {
+      // for IE and Edge
+      navigator.msSaveBlob(
+        new Blob([csvData], { type: "data:text/csv;charset=utf-8" }),
+        "PerPartitionQueryMetrics.csv",
+      );
+    } else {
+      const downloadLink: HTMLAnchorElement = document.createElement("a");
+      downloadLink.href = "data:text/csv;charset=utf-8," + encodeURI(csvData);
+      downloadLink.target = "_self";
+      downloadLink.download = "QueryMetricsPerPartition.csv";
+
+      // for some reason, FF displays the download prompt only when
+      // the link is added to the dom so we add and remove it
+      document.body.appendChild(downloadLink);
+      downloadLink.click();
+      downloadLink.remove();
+    }
+  };
+
+  const onDownloadQueryMetricsCsvClick = (): boolean => {
+    downloadQueryMetricsCsvData();
+    return false;
+  };
+
+  return (
+    <div className={styles.metricsGridContainer}>
+      <DataGrid
+        data-test="QueryTab/ResultsPane/ResultsView/QueryStatsList"
+        className={styles.queryStatsGrid}
+        items={generateQueryStatsItems()}
+        columns={columns}
+        sortable
+        getRowId={(item) => item.metric}
+        focusMode="composite"
+      >
+        <DataGridHeader>
+          <DataGridRow>
+            {({ renderHeaderCell }) => <DataGridHeaderCell>{renderHeaderCell()}</DataGridHeaderCell>}
+          </DataGridRow>
+        </DataGridHeader>
+        <DataGridBody<IDocument>>
+          {({ item, rowId }) => (
+            <DataGridRow<IDocument> key={rowId} data-test={`Row:${rowId}`}>
+              {({ columnId, renderCell }) => (
+                <DataGridCell data-test={`Row:${rowId}/Column:${columnId}`}>{renderCell(item)}</DataGridCell>
+              )}
+            </DataGridRow>
+          )}
+        </DataGridBody>
+      </DataGrid>
+      <div className={styles.metricsGridButtons}>
+        {userContext.apiType === "SQL" && (
+          <Button appearance="subtle" onClick={() => onDownloadQueryMetricsCsvClick()} icon={<ArrowDownloadRegular />}>
+            Per-partition query metrics (CSV)
+          </Button>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export const ResultsView: React.FC<ResultsViewProps> = ({ isMongoDB, queryResults, executeQueryDocumentsPage }) => {
+  const styles = useQueryTabStyles();
+  const [activeTab, setActiveTab] = useState<ResultsTabs>(ResultsTabs.Results);
+
+  const onTabSelect = useCallback((event: SelectTabEvent, data: SelectTabData) => {
+    setActiveTab(data.value as ResultsTabs);
+  }, []);
+
+  return (
+    <div data-test="QueryTab/ResultsPane/ResultsView" className={styles.queryResultsTabPanel}>
+      <TabList selectedValue={activeTab} onTabSelect={onTabSelect}>
+        <Tab
+          data-test="QueryTab/ResultsPane/ResultsView/ResultsTab"
+          id={ResultsTabs.Results}
+          value={ResultsTabs.Results}
+        >
+          Results
+        </Tab>
+        <Tab
+          data-test="QueryTab/ResultsPane/ResultsView/QueryStatsTab"
+          id={ResultsTabs.QueryStats}
+          value={ResultsTabs.QueryStats}
+        >
+          Query Stats
+        </Tab>
+      </TabList>
+      <div className={styles.queryResultsTabContentContainer}>
+        {activeTab === ResultsTabs.Results && (
+          <ResultsTab
+            queryResults={queryResults}
+            isMongoDB={isMongoDB}
+            executeQueryDocumentsPage={executeQueryDocumentsPage}
+          />
+        )}
+        {activeTab === ResultsTabs.QueryStats && <QueryStatsTab queryResults={queryResults} />}
+      </div>
+    </div>
+  );
+};

src/Explorer/Tabs/QueryTab/Styles.ts

@@ -0,0 +1,96 @@
+import { makeStyles, shorthands } from "@fluentui/react-components";
+import { cosmosShorthands } from "Explorer/Theme/ThemeUtil";
+
+export type QueryTabStyles = ReturnType<typeof useQueryTabStyles>;
+export const useQueryTabStyles = makeStyles({
+  queryTab: {
+    height: "100%",
+    display: "flex",
+    flexDirection: "column",
+  },
+  queryEditor: {
+    ...shorthands.border("none"),
+    paddingTop: "4px",
+    height: "100%",
+    width: "100%",
+  },
+  executeCallToAction: {
+    height: "100%",
+    display: "flex",
+    justifyContent: "center",
+    alignItems: "center",
+    textAlign: "center",
+  },
+  queryResultsPanel: {
+    height: "100%",
+    display: "flex",
+    flexDirection: "column",
+  },
+  queryResultsMessage: {
+    ...shorthands.margin("5px"),
+  },
+  queryResultsBody: {
+    flexGrow: 1,
+    justifySelf: "stretch",
+  },
+  queryResultsTabPanel: {
+    height: "100%",
+    display: "flex",
+    rowGap: "12px",
+    flexDirection: "column",
+  },
+  queryResultsTabContentContainer: {
+    display: "flex",
+    flexDirection: "column",
+    flexGrow: 1,
+    paddingLeft: "12px",
+    paddingRight: "12px",
+    overflow: "auto",
+  },
+  queryResultsViewer: {
+    flexGrow: 1,
+  },
+  queryResultsBar: {
+    display: "flex",
+    flexDirection: "row",
+    columnGap: "4px",
+    paddingBottom: "4px",
+  },
+  flexGrowSpacer: {
+    flexGrow: 1,
+  },
+  queryStatsGrid: {
+    flexGrow: 1,
+    overflow: "auto",
+  },
+  metricsGridContainer: {
+    display: "flex",
+    flexDirection: "column",
+    paddingBottom: "6px",
+    maxHeight: "100%",
+  },
+  metricsGridButtons: {
+    ...cosmosShorthands.borderTop(),
+  },
+  errorListTableCell: {
+    textOverflow: "ellipsis",
+    whiteSpace: "nowrap",
+    overflow: "hidden",
+  },
+  errorListMessageCell: {
+    display: "flex",
+    flexDirection: "row",
+    width: "100%",
+    alignItems: "center",
+  },
+  errorListMessage: {
+    flexGrow: 1,
+    textOverflow: "ellipsis",
+    whiteSpace: "nowrap",
+    overflow: "hidden",
+  },
+  errorListMessageActions: {
+    display: "flex",
+    flexDirection: "row",
+  },
+});

src/Explorer/Tabs/StoredProcedureTab/StoredProcedureTabComponent.tsx

@@ -1,5 +1,6 @@
 import { Resource, StoredProcedureDefinition } from "@azure/cosmos";
 import { Pivot, PivotItem } from "@fluentui/react";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { KeyboardAction } from "KeyboardShortcuts";
 import React from "react";
 import ExecuteQueryIcon from "../../../../images/ExecuteQuery.svg";
@@ -15,7 +16,6 @@ import { useTabs } from "../../../hooks/useTabs";
 import { CommandButtonComponentProps } from "../../Controls/CommandButton/CommandButtonComponent";
 import { EditorReact } from "../../Controls/Editor/EditorReact";
 import Explorer from "../../Explorer";
-import { useCommandBar } from "../../Menus/CommandBar/CommandBarComponentAdapter";
 import StoredProcedure from "../../Tree/StoredProcedure";
 import { useSelectedNode } from "../../useSelectedNode";
 import ScriptTabBase from "../ScriptTabBase";

src/Explorer/Tabs/Tabs.tsx

@@ -1,12 +1,13 @@
-import { IMessageBarStyles, Link, MessageBar, MessageBarButton, MessageBarType } from "@fluentui/react";
+import { IMessageBarStyles, MessageBar, MessageBarButton, MessageBarType } from "@fluentui/react";
 import { CassandraProxyEndpoints, MongoProxyEndpoints } from "Common/Constants";
 import { sendMessage } from "Common/MessageHandler";
-import { Platform, configContext, updateConfigContext } from "ConfigContext";
+import { configContext } from "ConfigContext";
 import { IpRule } from "Contracts/DataModels";
 import { MessageTypes } from "Contracts/ExplorerContracts";
 import { CollectionTabKind } from "Contracts/ViewModels";
 import Explorer from "Explorer/Explorer";
-import { useCommandBar } from "Explorer/Menus/CommandBar/CommandBarComponentAdapter";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
+import { CommandBarV2 } from "Explorer/Menus/CommandBarV2/CommandBarV2";
 import { QueryCopilotTab } from "Explorer/QueryCopilot/QueryCopilotTab";
 import { SplashScreen } from "Explorer/SplashScreen/SplashScreen";
 import { ConnectTab } from "Explorer/Tabs/ConnectTab";
@@ -16,7 +17,6 @@ import { VcoreMongoConnectTab } from "Explorer/Tabs/VCoreMongoConnectTab";
 import { VcoreMongoQuickstartTab } from "Explorer/Tabs/VCoreMongoQuickstartTab";
 import { LayoutConstants } from "Explorer/Theme/ThemeUtil";
 import { KeyboardAction, KeyboardActionGroup, useKeyboardActionGroup } from "KeyboardShortcuts";
-import { hasRUThresholdBeenConfigured } from "Shared/StorageUtility";
 import { userContext } from "UserContext";
 import { CassandraProxyOutboundIPs, MongoProxyOutboundIPs, PortalBackendIPs } from "Utils/EndpointUtils";
 import { useTeachingBubble } from "hooks/useTeachingBubble";
@@ -37,9 +37,6 @@ interface TabsProps {
 
 export const Tabs = ({ explorer }: TabsProps): JSX.Element => {
   const { openedTabs, openedReactTabs, activeTab, activeReactTab, networkSettingsWarning } = useTabs();
-  const [showRUThresholdMessageBar, setShowRUThresholdMessageBar] = useState<boolean>(
-    userContext.apiType === "SQL" && configContext.platform !== Platform.Fabric && !hasRUThresholdBeenConfigured(),
-  );
   const [
     showMongoAndCassandraProxiesNetworkSettingsWarningState,
     setShowMongoAndCassandraProxiesNetworkSettingsWarningState,
@@ -87,30 +84,6 @@ export const Tabs = ({ explorer }: TabsProps): JSX.Element => {
           {networkSettingsWarning}
         </MessageBar>
       )}
-      {showRUThresholdMessageBar && (
-        <MessageBar
-          messageBarType={MessageBarType.info}
-          onDismiss={() => {
-            setShowRUThresholdMessageBar(false);
-          }}
-          styles={{
-            ...defaultMessageBarStyles,
-            innerText: {
-              fontWeight: "bold",
-            },
-          }}
-        >
-          {`To prevent queries from using excessive RUs, Data Explorer has a 5,000 RU default limit. To modify or remove
-          the limit, go to the Settings cog on the right and find "RU Threshold".`}
-          <Link
-            className="underlinedLink"
-            href="https://review.learn.microsoft.com/en-us/azure/cosmos-db/data-explorer?branch=main#configure-request-unit-threshold"
-            target="_blank"
-          >
-            Learn More
-          </Link>
-        </MessageBar>
-      )}
       {showMongoAndCassandraProxiesNetworkSettingsWarningState && (
         <MessageBar
           messageBarType={MessageBarType.warning}
@@ -119,7 +92,7 @@ export const Tabs = ({ explorer }: TabsProps): JSX.Element => {
             setShowMongoAndCassandraProxiesNetworkSettingsWarningState(false);
           }}
         >
-          {`We are moving our middleware to new infrastructure. To avoid future issues with Data Explorer access, please
+          {`We have migrated our middleware to new infrastructure. To avoid issues with Data Explorer access, please
           re-enable "Allow access from Azure Portal" on the Networking blade for your account.`}
         </MessageBar>
       )}
@@ -134,6 +107,7 @@ export const Tabs = ({ explorer }: TabsProps): JSX.Element => {
         </ul>
       </div>
       <div className="tabPanesContainer">
+        {userContext.features.commandBarV2 && <CommandBarV2 explorer={explorer} />}
         {activeReactTab !== undefined && getReactTabContent(activeReactTab, explorer)}
         {openedTabs.map((tab) => (
           <TabPane key={tab.tabId} tab={tab} active={activeTab === tab} />
@@ -299,11 +273,15 @@ function TabPane({ tab, active }: { tab: Tab; active: boolean }) {
 
   if (tab) {
     if ("render" in tab) {
-      return <div {...attrs}>{tab.render()}</div>;
+      return (
+        <div data-test={`Tab:${tab.tabId}`} {...attrs}>
+          {tab.render()}
+        </div>
+      );
     }
   }
 
-  return <div {...attrs} ref={ref} data-bind="html:html" />;
+  return <div data-test={`Tab:${tab.tabId}`} {...attrs} ref={ref} data-bind="html:html" />;
 }
 
 const onKeyPressReactTab = (e: KeyboardEvent, tabKind: ReactTabKind): void => {
@@ -394,12 +372,6 @@ const showMongoAndCassandraProxiesNetworkSettingsWarning = (): boolean => {
         ipAddressesFromIPRules.includes(mongoProxyOutboundIP),
       );
 
-      if (ipRulesIncludeMongoProxy) {
-        updateConfigContext({
-          MONGO_PROXY_OUTBOUND_IPS_ALLOWLISTED: true,
-        });
-      }
-
       return !ipRulesIncludeMongoProxy;
     } else if (userContext.apiType === "Cassandra") {
       const isProdOrMpacCassandraProxyEndpoint: boolean = [
@@ -418,12 +390,6 @@ const showMongoAndCassandraProxiesNetworkSettingsWarning = (): boolean => {
         (cassandraProxyOutboundIP: string) => ipAddressesFromIPRules.includes(cassandraProxyOutboundIP),
       );
 
-      if (ipRulesIncludeCassandraProxy) {
-        updateConfigContext({
-          CASSANDRA_PROXY_OUTBOUND_IPS_ALLOWLISTED: true,
-        });
-      }
-
       return !ipRulesIncludeCassandraProxy;
     }
   }

src/Explorer/Tabs/TabsBase.ts

@@ -1,3 +1,4 @@
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { KeyboardActionGroup, clearKeyboardActionGroup } from "KeyboardShortcuts";
 import * as ko from "knockout";
 import * as Constants from "../../Common/Constants";
@@ -9,7 +10,6 @@ import { useNotificationConsole } from "../../hooks/useNotificationConsole";
 import { useTabs } from "../../hooks/useTabs";
 import { CommandButtonComponentProps } from "../Controls/CommandButton/CommandButtonComponent";
 import Explorer from "../Explorer";
-import { useCommandBar } from "../Menus/CommandBar/CommandBarComponentAdapter";
 import { WaitsForTemplateViewModel } from "../WaitsForTemplateViewModel";
 import { useSelectedNode } from "../useSelectedNode";
 // TODO: Use specific actions for logging telemetry data

src/Explorer/Tabs/TriggerTabContent.tsx

@@ -1,5 +1,6 @@
 import { TriggerDefinition } from "@azure/cosmos";
 import { Dropdown, IDropdownOption, Label, TextField } from "@fluentui/react";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { KeyboardAction } from "KeyboardShortcuts";
 import React, { Component } from "react";
 import DiscardIcon from "../../../images/discard.svg";
@@ -14,7 +15,6 @@ import * as TelemetryProcessor from "../../Shared/Telemetry/TelemetryProcessor";
 import { SqlTriggerResource } from "../../Utils/arm/generatedClients/cosmos/types";
 import { CommandButtonComponentProps } from "../Controls/CommandButton/CommandButtonComponent";
 import { EditorReact } from "../Controls/Editor/EditorReact";
-import { useCommandBar } from "../Menus/CommandBar/CommandBarComponentAdapter";
 import TriggerTab from "./TriggerTab";
 
 const triggerTypeOptions: IDropdownOption[] = [

src/Explorer/Tabs/UserDefinedFunctionTabContent.tsx

@@ -1,5 +1,6 @@
 import { UserDefinedFunctionDefinition } from "@azure/cosmos";
 import { Label, TextField } from "@fluentui/react";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { KeyboardAction } from "KeyboardShortcuts";
 import React, { Component } from "react";
 import DiscardIcon from "../../../images/discard.svg";
@@ -13,7 +14,6 @@ import { Action } from "../../Shared/Telemetry/TelemetryConstants";
 import * as TelemetryProcessor from "../../Shared/Telemetry/TelemetryProcessor";
 import { CommandButtonComponentProps } from "../Controls/CommandButton/CommandButtonComponent";
 import { EditorReact } from "../Controls/Editor/EditorReact";
-import { useCommandBar } from "../Menus/CommandBar/CommandBarComponentAdapter";
 import UserDefinedFunctionTab from "./UserDefinedFunctionTab";
 
 interface IUserDefinedFunctionTabContentState {

src/Explorer/Theme/ThemeUtil.tsx

@@ -1,6 +1,8 @@
 import {
   BrandVariants,
+  ComponentProps,
   FluentProvider,
+  FluentProviderSlots,
   Theme,
   createLightTheme,
   makeStyles,
@@ -10,16 +12,19 @@ import {
   webLightTheme,
 } from "@fluentui/react-components";
 import { Platform, configContext } from "ConfigContext";
-import React, { PropsWithChildren } from "react";
+import React from "react";
 import { appThemeFabricTealBrandRamp } from "../../Platform/Fabric/FabricTheme";
 
 export const LayoutConstants = {
-  rowHeight: 36,
+  rowHeight: 32,
 };
 
-export type CosmosFluentProviderProps = PropsWithChildren<{
-  className?: string;
-}>;
+// Our CosmosFluentProvider has the same props as a FluentProvider.
+export type CosmosFluentProviderProps = Omit<ComponentProps<FluentProviderSlots, "root">, "dir">;
+
+// PropsWithChildren<{
+//   className?: string;
+// }>;
 
 const useDefaultRootStyles = makeStyles({
   fluentProvider: {
@@ -32,15 +37,37 @@ const useDefaultRootStyles = makeStyles({
   },
 });
 
-export const CosmosFluentProvider: React.FC<CosmosFluentProviderProps> = ({ children, className }) => {
+const FluentProviderContext = React.createContext({
+  isInFluentProvider: false,
+});
+
+export const CosmosFluentProvider: React.FC<CosmosFluentProviderProps> = ({ children, className, ...props }) => {
+  // We use a React context to ensure that nested CosmosFluentProviders don't create nested FluentProviders.
+  // This helps during the transition from Fluent UI 8 to Fluent UI 9.
+  // As we convert components to Fluent UI 9, if we end up with nested FluentProviders, the inner FluentProvider will be a no-op.
+  const { isInFluentProvider } = React.useContext(FluentProviderContext);
   const styles = useDefaultRootStyles();
+
+  if (isInFluentProvider) {
+    // We're already in a fluent context, don't create another.
+    console.warn("Nested CosmosFluentProvider detected. This is likely a bug.");
+    return (
+      <div className={className} {...props}>
+        {children}
+      </div>
+    );
+  }
+
   return (
-    <FluentProvider
-      theme={getPlatformTheme(configContext.platform)}
-      className={mergeClasses(styles.fluentProvider, className)}
-    >
-      {children}
-    </FluentProvider>
+    <FluentProviderContext.Provider value={{ isInFluentProvider: true }}>
+      <FluentProvider
+        theme={getPlatformTheme(configContext.platform)}
+        className={mergeClasses(styles.fluentProvider, className)}
+        {...props}
+      >
+        {children}
+      </FluentProvider>
+    </FluentProviderContext.Provider>
   );
 };
 
@@ -64,15 +91,30 @@ const appThemePortalBrandRamp: BrandVariants = {
   160: "#CDD8EF",
 };
 
-const cosmosThemeElements = {
-  layoutRowHeight: `${LayoutConstants.rowHeight}px`,
+export enum LayoutSize {
+  Compact,
+  // TODO: Cozy and Roomy layouts.
+}
+
+interface CosmosThemeElements {
+  layoutRowHeight: string;
+}
+
+export type CosmosTheme = Theme & CosmosThemeElements;
+
+const sizeMappings: Record<LayoutSize, Partial<Theme> & CosmosThemeElements> = {
+  [LayoutSize.Compact]: {
+    layoutRowHeight: "32px",
+    fontSizeBase300: "13px",
+  },
+};
+
+const cosmosTheme = {
   sidebarMinimumWidth: "200px",
   sidebarInitialWidth: "300px",
 };
 
-export type CosmosTheme = Theme & typeof cosmosThemeElements;
-
-export const tokens = themeToTokensObject({ ...webLightTheme, ...cosmosThemeElements });
+export const tokens = themeToTokensObject({ ...webLightTheme, ...cosmosTheme, ...sizeMappings[LayoutSize.Compact] });
 
 export const cosmosShorthands = {
   border: () => shorthands.border("1px", "solid", tokens.colorNeutralStroke2),
@@ -90,6 +132,7 @@ export function getPlatformTheme(platform: Platform): CosmosTheme {
 
   return {
     ...baseTheme,
-    ...cosmosThemeElements,
+    ...cosmosTheme,
+    ...sizeMappings[LayoutSize.Compact], // TODO: Allow for different layout sizes.
   };
 }

src/Explorer/Tree/Collection.ts

@@ -1,4 +1,5 @@
 import { Resource, StoredProcedureDefinition, TriggerDefinition, UserDefinedFunctionDefinition } from "@azure/cosmos";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { useNotebook } from "Explorer/Notebook/useNotebook";
 import { DocumentsTabV2 } from "Explorer/Tabs/DocumentsTabV2/DocumentsTabV2";
 import * as ko from "knockout";
@@ -23,7 +24,6 @@ import { logConsoleInfo } from "../../Utils/NotificationConsoleUtils";
 import { SqlTriggerResource } from "../../Utils/arm/generatedClients/cosmos/types";
 import { useTabs } from "../../hooks/useTabs";
 import Explorer from "../Explorer";
-import { useCommandBar } from "../Menus/CommandBar/CommandBarComponentAdapter";
 import { CassandraAPIDataClient, CassandraTableKey, CassandraTableKeys } from "../Tables/TableDataClient";
 import ConflictsTab from "../Tabs/ConflictsTab";
 import GraphTab from "../Tabs/GraphTab";

src/Explorer/Tree/ResourceTreeAdapter.tsx

@@ -1,4 +1,6 @@
 import { TreeNodeMenuItem } from "Explorer/Controls/TreeComponent/TreeNodeComponent";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
+import { collectionWasOpened } from "Explorer/MostRecentActivity/MostRecentActivity";
 import { shouldShowScriptNodes } from "Explorer/Tree/treeNodeUtil";
 import { getItemName } from "Utils/APITypeUtils";
 import * as ko from "knockout";
@@ -27,8 +29,6 @@ import * as ResourceTreeContextMenuButtonFactory from "../ContextMenuButtonFacto
 import { useDialog } from "../Controls/Dialog";
 import { LegacyTreeComponent, LegacyTreeNode } from "../Controls/TreeComponent/LegacyTreeComponent";
 import Explorer from "../Explorer";
-import { useCommandBar } from "../Menus/CommandBar/CommandBarComponentAdapter";
-import { mostRecentActivity } from "../MostRecentActivity/MostRecentActivity";
 import { NotebookContentItem, NotebookContentItemType } from "../Notebook/NotebookContentItem";
 import { NotebookUtil } from "../Notebook/NotebookUtil";
 import { useNotebook } from "../Notebook/useNotebook";
@@ -229,7 +229,7 @@ export class ResourceTreeAdapter implements ReactAdapter {
       onClick: () => {
         collection.openTab();
         // push to most recent
-        mostRecentActivity.collectionWasOpened(userContext.databaseAccount?.id, collection);
+        collectionWasOpened(userContext.databaseAccount?.name, collection);
       },
       isSelected: () =>
         useSelectedNode

src/Explorer/Tree/SampleDataTree.tsx

@@ -1,4 +1,4 @@
-import { useCommandBar } from "Explorer/Menus/CommandBar/CommandBarComponentAdapter";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import TabsBase from "Explorer/Tabs/TabsBase";
 import { useSelectedNode } from "Explorer/useSelectedNode";
 import { useTabs } from "hooks/useTabs";

src/Explorer/Tree/__snapshots__/treeNodeUtil.test.ts.snap

@@ -30,6 +30,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Ca
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "standardCollection",
@@ -69,6 +72,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Ca
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "conflictsCollection",
@@ -92,6 +98,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Ca
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "standardDb",
@@ -102,6 +111,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Ca
   {
     "children": [
       {
+        "iconSrc": <SettingsRegular
+          fontSize={16}
+        />,
         "id": "",
         "isSelected": [Function],
         "label": "Scale",
@@ -133,6 +145,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Ca
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "sampleItemsCollection",
@@ -156,6 +171,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Ca
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "sharedDatabase",
@@ -246,6 +264,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Ca
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "schemaCollection",
@@ -274,6 +295,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Ca
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "giganticDatabase",
@@ -345,6 +369,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Mo
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "standardCollection",
@@ -415,6 +442,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Mo
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "conflictsCollection",
@@ -438,6 +468,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Mo
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "standardDb",
@@ -448,6 +481,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Mo
   {
     "children": [
       {
+        "iconSrc": <SettingsRegular
+          fontSize={16}
+        />,
         "id": "",
         "isSelected": [Function],
         "label": "Scale",
@@ -510,6 +546,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Mo
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "sampleItemsCollection",
@@ -533,6 +572,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Mo
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "sharedDatabase",
@@ -654,6 +696,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Mo
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "schemaCollection",
@@ -682,6 +727,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the Mo
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "giganticDatabase",
@@ -706,6 +754,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
             "onClick": [Function],
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "standardCollection",
@@ -724,6 +775,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
             "onClick": [Function],
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "conflictsCollection",
@@ -747,6 +801,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "standardDb",
@@ -766,6 +823,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
             "onClick": [Function],
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "sampleItemsCollection",
@@ -789,6 +849,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "sharedDatabase",
@@ -808,6 +871,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
             "onClick": [Function],
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "schemaCollection",
@@ -836,6 +902,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "giganticDatabase",
@@ -976,6 +1045,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "standardCollection",
@@ -1076,6 +1148,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "conflictsCollection",
@@ -1099,6 +1174,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "standardDb",
@@ -1109,6 +1187,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
   {
     "children": [
       {
+        "iconSrc": <SettingsRegular
+          fontSize={16}
+        />,
         "id": "",
         "isSelected": [Function],
         "label": "Scale",
@@ -1201,6 +1282,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "sampleItemsCollection",
@@ -1224,6 +1308,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "sharedDatabase",
@@ -1375,6 +1462,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "schemaCollection",
@@ -1403,6 +1493,9 @@ exports[`createDatabaseTreeNodes generates the correct tree structure for the SQ
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "giganticDatabase",
@@ -1543,6 +1636,9 @@ exports[`createDatabaseTreeNodes using NoSQL API on Hosted Platform creates expe
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "standardCollection",
@@ -1638,6 +1734,9 @@ exports[`createDatabaseTreeNodes using NoSQL API on Hosted Platform creates expe
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "conflictsCollection",
@@ -1661,6 +1760,9 @@ exports[`createDatabaseTreeNodes using NoSQL API on Hosted Platform creates expe
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "standardDb",
@@ -1671,6 +1773,9 @@ exports[`createDatabaseTreeNodes using NoSQL API on Hosted Platform creates expe
   {
     "children": [
       {
+        "iconSrc": <SettingsRegular
+          fontSize={16}
+        />,
         "id": "",
         "isSelected": [Function],
         "label": "Scale",
@@ -1763,6 +1868,9 @@ exports[`createDatabaseTreeNodes using NoSQL API on Hosted Platform creates expe
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "sampleItemsCollection",
@@ -1786,6 +1894,9 @@ exports[`createDatabaseTreeNodes using NoSQL API on Hosted Platform creates expe
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "sharedDatabase",
@@ -1937,6 +2048,9 @@ exports[`createDatabaseTreeNodes using NoSQL API on Hosted Platform creates expe
             "styleClass": "deleteCollectionMenuItem",
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": true,
         "isSelected": [Function],
         "label": "schemaCollection",
@@ -1965,6 +2079,9 @@ exports[`createDatabaseTreeNodes using NoSQL API on Hosted Platform creates expe
         "styleClass": "deleteDatabaseMenuItem",
       },
     ],
+    "iconSrc": <DatabaseRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "giganticDatabase",
@@ -1986,6 +2103,9 @@ exports[`createResourceTokenTreeNodes creates the expected tree nodes 1`] = `
       },
     ],
     "className": "collectionNode",
+    "iconSrc": <DocumentMultipleRegular
+      fontSize={16}
+    />,
     "isExpanded": true,
     "isSelected": [Function],
     "label": "testCollection",
@@ -2021,6 +2141,9 @@ exports[`createSampleDataTreeNodes creates the expected tree nodes 1`] = `
             "onClick": [Function],
           },
         ],
+        "iconSrc": <DocumentMultipleRegular
+          fontSize={16}
+        />,
         "isExpanded": false,
         "isSelected": [Function],
         "label": "testCollection",

src/Explorer/Tree/treeNodeUtil.test.ts

@@ -2,7 +2,7 @@ import { CapabilityNames } from "Common/Constants";
 import { Platform, updateConfigContext } from "ConfigContext";
 import { TreeNode } from "Explorer/Controls/TreeComponent/TreeNodeComponent";
 import Explorer from "Explorer/Explorer";
-import { useCommandBar } from "Explorer/Menus/CommandBar/CommandBarComponentAdapter";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
 import { useNotebook } from "Explorer/Notebook/useNotebook";
 import { DeleteDatabaseConfirmationPanel } from "Explorer/Panes/DeleteDatabaseConfirmationPanel";
 import TabsBase from "Explorer/Tabs/TabsBase";

src/Explorer/Tree/treeNodeUtil.tsx

@@ -1,4 +1,7 @@
+import { DatabaseRegular, DocumentMultipleRegular, SettingsRegular } from "@fluentui/react-icons";
 import { TreeNode } from "Explorer/Controls/TreeComponent/TreeNodeComponent";
+import { useCommandBar } from "Explorer/Menus/CommandBar/useCommandBar";
+import { collectionWasOpened } from "Explorer/MostRecentActivity/MostRecentActivity";
 import TabsBase from "Explorer/Tabs/TabsBase";
 import StoredProcedure from "Explorer/Tree/StoredProcedure";
 import Trigger from "Explorer/Tree/Trigger";
@@ -7,6 +10,7 @@ import { useDatabases } from "Explorer/useDatabases";
 import { getItemName } from "Utils/APITypeUtils";
 import { isServerlessAccount } from "Utils/CapabilityUtils";
 import { useTabs } from "hooks/useTabs";
+import React from "react";
 import { isPublicInternetAccessAllowed } from "../../Common/DatabaseAccountUtility";
 import { Platform, configContext } from "../../ConfigContext";
 import * as DataModels from "../../Contracts/DataModels";
@@ -14,8 +18,6 @@ import * as ViewModels from "../../Contracts/ViewModels";
 import { userContext } from "../../UserContext";
 import * as ResourceTreeContextMenuButtonFactory from "../ContextMenuButtonFactory";
 import Explorer from "../Explorer";
-import { useCommandBar } from "../Menus/CommandBar/CommandBarComponentAdapter";
-import { mostRecentActivity } from "../MostRecentActivity/MostRecentActivity";
 import { useNotebook } from "../Notebook/useNotebook";
 import { useSelectedNode } from "../useSelectedNode";
 
@@ -25,6 +27,10 @@ export const shouldShowScriptNodes = (): boolean => {
   );
 };
 
+const TreeDatabaseIcon = <DatabaseRegular fontSize={16} />;
+const TreeSettingsIcon = <SettingsRegular fontSize={16} />;
+const TreeCollectionIcon = <DocumentMultipleRegular fontSize={16} />;
+
 export const createSampleDataTreeNodes = (sampleDataResourceTokenCollection: ViewModels.CollectionBase): TreeNode[] => {
   const updatedSampleTree: TreeNode = {
     label: sampleDataResourceTokenCollection.databaseId,
@@ -36,6 +42,7 @@ export const createSampleDataTreeNodes = (sampleDataResourceTokenCollection: Vie
         isExpanded: false,
         className: "collectionNode",
         contextMenu: ResourceTreeContextMenuButtonFactory.createSampleCollectionContextMenuButton(),
+        iconSrc: TreeCollectionIcon,
         onClick: () => {
           useSelectedNode.getState().setSelectedNode(sampleDataResourceTokenCollection);
           useCommandBar.getState().setContextButtons([]);
@@ -91,7 +98,7 @@ export const createResourceTokenTreeNodes = (collection: ViewModels.CollectionBa
     onClick: () => {
       collection.onDocumentDBDocumentsClick();
       // push to most recent
-      mostRecentActivity.collectionWasOpened(userContext.databaseAccount?.id, collection);
+      collectionWasOpened(userContext.databaseAccount?.name, collection);
     },
     isSelected: () =>
       useSelectedNode
@@ -104,6 +111,7 @@ export const createResourceTokenTreeNodes = (collection: ViewModels.CollectionBa
     isExpanded: true,
     children,
     className: "collectionNode",
+    iconSrc: TreeCollectionIcon,
     onClick: () => {
       // Rewritten version of expandCollapseCollection
       useSelectedNode.getState().setSelectedNode(collection);
@@ -133,6 +141,7 @@ export const createDatabaseTreeNodes = (
         databaseNode.children.push({
           id: database.isSampleDB ? "sampleScaleSettings" : "",
           label: "Scale",
+          iconSrc: TreeSettingsIcon,
           isSelected: () =>
             useSelectedNode
               .getState()
@@ -169,6 +178,7 @@ export const createDatabaseTreeNodes = (
       children: [],
       isSelected: () => useSelectedNode.getState().isDataNodeSelected(database.id()),
       contextMenu: ResourceTreeContextMenuButtonFactory.createDatabaseContextMenu(container, database.id()),
+      iconSrc: TreeDatabaseIcon,
       onExpanded: async () => {
         useSelectedNode.getState().setSelectedNode(database);
         if (!databaseNode.children || databaseNode.children?.length === 0) {
@@ -219,11 +229,12 @@ export const buildCollectionNode = (
     children: children,
     className: "collectionNode",
     contextMenu: ResourceTreeContextMenuButtonFactory.createCollectionContextMenuButton(container, collection),
+    iconSrc: TreeCollectionIcon,
     onClick: () => {
       useSelectedNode.getState().setSelectedNode(collection);
       collection.openTab();
       // push to most recent
-      mostRecentActivity.collectionWasOpened(userContext.databaseAccount?.id, collection);
+      collectionWasOpened(userContext.databaseAccount?.name, collection);
     },
     onExpanded: async () => {
       // Rewritten version of expandCollapseCollection
@@ -271,7 +282,7 @@ const buildCollectionNodeChildren = (
     onClick: () => {
       collection.openTab();
       // push to most recent
-      mostRecentActivity.collectionWasOpened(userContext.databaseAccount?.id, collection);
+      collectionWasOpened(userContext.databaseAccount?.name, collection);
     },
     isSelected: () =>
       useSelectedNode

src/Main.tsx

@@ -6,6 +6,7 @@ import { initializeIcons, loadTheme } from "@fluentui/react";
 import { QuickstartCarousel } from "Explorer/Quickstart/QuickstartCarousel";
 import { MongoQuickstartTutorial } from "Explorer/Quickstart/Tutorials/MongoQuickstartTutorial";
 import { SQLQuickstartTutorial } from "Explorer/Quickstart/Tutorials/SQLQuickstartTutorial";
+import "allotment/dist/style.css";
 import "bootstrap/dist/css/bootstrap.css";
 import { useCarousel } from "hooks/useCarousel";
 import React from "react";
@@ -19,9 +20,11 @@ import "../externals/jquery.typeahead.min.css";
 import "../externals/jquery.typeahead.min.js";
 // Image Dependencies
 import { Platform } from "ConfigContext";
+import { CommandBar } from "Explorer/Menus/CommandBar/CommandBarComponentAdapter";
 import { QueryCopilotCarousel } from "Explorer/QueryCopilot/CopilotCarousel";
 import { SidebarContainer } from "Explorer/Sidebar";
 import { KeyboardShortcutRoot } from "KeyboardShortcuts";
+import { userContext } from "UserContext";
 import "allotment/dist/style.css";
 import "../images/CosmosDB_rgb_ui_lighttheme.ico";
 import hdeConnectImage from "../images/HdeConnectCosmosDB.svg";
@@ -47,7 +50,6 @@ import "./Explorer/Controls/Notebook/NotebookTerminalComponent.less";
 import "./Explorer/Controls/TreeComponent/treeComponent.less";
 import "./Explorer/Graph/GraphExplorerComponent/graphExplorer.less";
 import "./Explorer/Menus/CommandBar/CommandBarComponent.less";
-import { CommandBar } from "./Explorer/Menus/CommandBar/CommandBarComponentAdapter";
 import "./Explorer/Menus/CommandBar/ConnectionStatusComponent.less";
 import "./Explorer/Menus/CommandBar/MemoryTrackerComponent.less";
 import "./Explorer/Menus/NotificationConsole/NotificationConsole.less";
@@ -85,7 +87,7 @@ const App: React.FunctionComponent = () => {
         <div id="divExplorer" className="flexContainer hideOverflows">
           <div id="freeTierTeachingBubble"> </div>
           {/* Main Command Bar - Start */}
-          <CommandBar container={explorer} />
+          {!userContext.features.commandBarV2 && <CommandBar container={explorer} />}
           {/* Collections Tree and Tabs - Begin */}
           <SidebarContainer explorer={explorer} />
           {/* Collections Tree and Tabs - End */}

src/Platform/Hosted/Components/ConnectExplorer.tsx

@@ -52,7 +52,7 @@ export const isAccountRestrictedForConnectionStringLogin = async (connectionStri
   const headers = new Headers();
   headers.append(HttpHeaders.connectionString, connectionString);
 
-  const backendEndpoint: string = useNewPortalBackendEndpoint(BackendApi.PortalSettings)
+  const backendEndpoint: string = useNewPortalBackendEndpoint(BackendApi.AccountRestrictions)
     ? configContext.PORTAL_BACKEND_ENDPOINT
     : configContext.BACKEND_ENDPOINT;
 

src/Platform/Hosted/Components/FeedbackCommandButton.tsx

@@ -1,22 +1,18 @@
 import * as React from "react";
-import { CommandButtonComponent } from "../../../Explorer/Controls/CommandButton/CommandButtonComponent";
 import FeedbackIcon from "../../../../images/Feedback.svg";
 
+const onClick = () => {
+  window.open("https://aka.ms/cosmosdbfeedback?subject=Cosmos%20DB%20Hosted%20Data%20Explorer%20Feedback");
+};
+
 export const FeedbackCommandButton: React.FunctionComponent = () => {
   return (
     <div className="feedbackConnectSettingIcons">
-      <CommandButtonComponent
-        id="commandbutton-feedback"
-        iconSrc={FeedbackIcon}
-        iconAlt="feeback button"
-        onCommandClick={() =>
-          window.open("https://aka.ms/cosmosdbfeedback?subject=Cosmos%20DB%20Hosted%20Data%20Explorer%20Feedback")
-        }
-        ariaLabel="feeback button"
-        tooltipText="Send feedback"
-        hasPopup={true}
-        disabled={false}
-      />
+      <div className="commandButtonReact">
+        <a href="#" title="Send feedback" aria-haspopup="dialog" onClick={onClick}>
+          <img src={FeedbackIcon} alt="Send feedback" />
+        </a>
+      </div>
     </div>
   );
 };

src/Platform/Hosted/Helpers/ResourceTokenUtils.test.ts

@@ -11,7 +11,7 @@ describe("parseResourceTokenConnectionString", () => {
       collectionId: "fakeCollectionId",
       databaseId: "fakeDatabaseId",
       partitionKey: undefined,
-      resourceToken: "type=resource&ver=1&sig=2dIP+CdIfT1ScwHWdv5GGw==;fakeToken;",
+      resourceToken: "type=resource&ver=1&sig=2dIP+CdIfT1ScwHWdv5GGw==;fakeToken",
     });
   });
 
@@ -25,7 +25,7 @@ describe("parseResourceTokenConnectionString", () => {
       collectionId: "fakeCollectionId",
       databaseId: "fakeDatabaseId",
       partitionKey: "fakePartitionKey",
-      resourceToken: "type=resource&ver=1&sig=2dIP+CdIfT1ScwHWdv5GGw==;fakeToken;",
+      resourceToken: "type=resource&ver=1&sig=2dIP+CdIfT1ScwHWdv5GGw==;fakeToken",
     });
   });
 });

src/Platform/Hosted/Helpers/ResourceTokenUtils.ts

@@ -30,6 +30,10 @@ export function parseResourceTokenConnectionString(connectionString: string): Pa
     }
   });
 
+  if (resourceToken && resourceToken.endsWith(";")) {
+    resourceToken = resourceToken.substring(0, resourceToken.length - 1);
+  }
+
   return {
     accountEndpoint,
     collectionId,