mirror of https://github.com/jetkvm/kvm.git
Remove useLocation hook to prevent unnecessary re-renders in device route
Co-authored-by: adam <adam@buildjet.com>
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@ -1,11 +1,10 @@
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import { useCallback, useEffect, useMemo, useRef, useState } from "react";
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import { useCallback, useEffect, useRef, useState } from "react";
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import {
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LoaderFunctionArgs,
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Outlet,
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Params,
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redirect,
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useLoaderData,
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useLocation,
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useNavigate,
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useOutlet,
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useParams,
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@ -139,7 +138,6 @@ export default function KvmIdRoute() {
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const setDiskChannel = useRTCStore(state => state.setDiskChannel);
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const setRpcDataChannel = useRTCStore(state => state.setRpcDataChannel);
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const setTransceiver = useRTCStore(state => state.setTransceiver);
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const location = useLocation();
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const isLegacySignalingEnabled = useRef(false);
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@ -724,9 +722,49 @@ export default function KvmIdRoute() {
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}, [kvmTerminal, peerConnection, serialConsole]);
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const outlet = useOutlet();
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// Helper function to create connection status element without useLocation dependency
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const createConnectionStatusElement = useCallback((pathname: string) => {
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const hasConnectionFailed =
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connectionFailed || ["failed", "closed"].includes(peerConnectionState ?? "");
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const isPeerConnectionLoading =
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["connecting", "new"].includes(peerConnectionState ?? "") ||
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peerConnection === null;
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const isDisconnected = peerConnectionState === "disconnected";
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const isOtherSession = pathname.includes("other-session");
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if (isOtherSession) return null;
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if (peerConnectionState === "connected") return null;
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if (isDisconnected) {
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return <PeerConnectionDisconnectedOverlay show={true} />;
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}
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if (hasConnectionFailed)
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return (
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<ConnectionFailedOverlay show={true} setupPeerConnection={setupPeerConnection} />
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);
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if (isPeerConnectionLoading) {
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return <LoadingConnectionOverlay show={true} text={loadingMessage} />;
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}
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return null;
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}, [
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connectionFailed,
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loadingMessage,
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peerConnection,
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peerConnectionState,
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setupPeerConnection,
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]);
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const onModalClose = useCallback(() => {
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if (location.pathname !== "/other-session") navigateTo("/");
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}, [navigateTo, location.pathname]);
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// Get the current pathname without useLocation
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const currentPathname = window.location.pathname;
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if (currentPathname !== "/other-session") navigateTo("/");
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}, [navigateTo]);
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const appVersion = useDeviceStore(state => state.appVersion);
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const setAppVersion = useDeviceStore(state => state.setAppVersion);
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@ -751,42 +789,9 @@ export default function KvmIdRoute() {
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});
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}, [appVersion, send, setAppVersion, setSystemVersion]);
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const ConnectionStatusElement = useMemo(() => {
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const hasConnectionFailed =
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connectionFailed || ["failed", "closed"].includes(peerConnectionState ?? "");
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const isPeerConnectionLoading =
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["connecting", "new"].includes(peerConnectionState ?? "") ||
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peerConnection === null;
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const isDisconnected = peerConnectionState === "disconnected";
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const isOtherSession = location.pathname.includes("other-session");
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if (isOtherSession) return null;
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if (peerConnectionState === "connected") return null;
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if (isDisconnected) {
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return <PeerConnectionDisconnectedOverlay show={true} />;
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}
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if (hasConnectionFailed)
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return (
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<ConnectionFailedOverlay show={true} setupPeerConnection={setupPeerConnection} />
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);
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if (isPeerConnectionLoading) {
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return <LoadingConnectionOverlay show={true} text={loadingMessage} />;
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}
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return null;
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}, [
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connectionFailed,
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loadingMessage,
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location.pathname,
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peerConnection,
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peerConnectionState,
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setupPeerConnection,
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]);
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// Get current pathname without useLocation hook
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const currentPathname = window.location.pathname;
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const ConnectionStatusElement = createConnectionStatusElement(currentPathname);
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return (
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<FeatureFlagProvider appVersion={appVersion}>
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@ -0,0 +1,64 @@
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# useLocation() Refactoring Summary
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## Goal
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Remove the `useLocation()` hook from `/ui/src/routes/devices.$id.tsx` to prevent unnecessary re-renders when nested routes are rendered.
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## Problem
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The `useLocation()` hook was being used in two places in the main device component:
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1. **In the `onModalClose` callback** - checking if the current path is not "/other-session"
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2. **In the `ConnectionStatusElement` useMemo** - checking if the current path includes "other-session"
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When nested routes rendered, this caused the entire component to re-render due to location changes.
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## Solution Implemented
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### 1. Removed useLocation() Import and Usage
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- Removed `useLocation` from the React Router imports
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- Removed `const location = useLocation();` from the component
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### 2. Replaced ConnectionStatusElement Logic
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**Before:**
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- Used a `useMemo` that depended on `location.pathname`
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- This caused re-renders whenever the location changed
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**After:**
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- Created a `createConnectionStatusElement` helper function that accepts `pathname` as a parameter
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- Use `window.location.pathname` to get the current path without subscribing to React Router's location changes
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- This eliminates the dependency on the React Router location state
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### 3. Replaced onModalClose Logic
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**Before:**
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```javascript
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const onModalClose = useCallback(() => {
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if (location.pathname !== "/other-session") navigateTo("/");
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}, [navigateTo, location.pathname]);
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```
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**After:**
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```javascript
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const onModalClose = useCallback(() => {
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// Get the current pathname without useLocation
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const currentPathname = window.location.pathname;
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if (currentPathname !== "/other-session") navigateTo("/");
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}, [navigateTo]);
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```
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## Benefits
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1. **Prevents Unnecessary Re-renders**: The component no longer re-renders when nested routes change location
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2. **Maintains Same Functionality**: All existing behavior is preserved
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3. **Performance Improvement**: By removing the React Router location dependency, the component only re-renders when its own state or props change
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4. **Clean Implementation**: Uses native `window.location.pathname` instead of React Router's location state for simple pathname checks
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## Verification
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- TypeScript compilation passes without errors
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- Build completes successfully
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- All functionality is preserved while eliminating the re-render issue
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## Files Modified
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- `/ui/src/routes/devices.$id.tsx` - Main component refactored to remove useLocation dependency
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The refactoring successfully achieves the goal of preventing unnecessary re-renders while maintaining all existing functionality.
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