LibreChat/client/src/components/Nav
Danny Avila 8d1f1c4dd4
👐 fix: Open/Close Sidebar Button Animation UX Regression from #10521 (#10694)
Problem:
--------
Commit 5ed1f2991 introduced a layout shift regression when opening the
sidebar. The UI would visibly "jump" as elements shifted right before
the animation completed. Closing the sidebar worked correctly.

Root Cause Analysis:
--------------------
The accessibility PR added a redundant `{navVisible && ...}` conditional
wrapper around the `<nav>` content inside Nav.tsx's `motion.div`. This
caused a race condition:

1. User clicks "Open Sidebar" button
2. `navVisible` state becomes `true`
3. React renders the `motion.div` AND its children simultaneously
4. The inner `{navVisible && (<nav>...)}` renders content at full width
   (320px/260px) BEFORE framer-motion applies `initial={{ width: 0 }}`
5. Brief flash of full-width content causes visible layout shift
6. Animation then starts from width: 0, but damage is done

The ref-based focus management (passing `openSidebarRef`/`closeSidebarRef`
through context) was suspected but was not the actual cause. However,
`requestAnimationFrame` focus calls during animation start could trigger
forced layout calculations, exacerbating the issue.

Solution:
---------
1. Remove redundant conditional rendering in Nav.tsx
   - The outer `{navVisible && (<motion.div>...)}` already controls
     visibility
   - The `overflow-x-hidden` class on motion.div clips content during
     animation
   - Content should always exist inside motion.div for smooth clipping

2. Replace ref-based focus with ID-based focus management
   - Refs passed through component tree can affect React's reconciliation
   - Using `document.getElementById()` decouples focus from render cycle
   - Exported `CLOSE_SIDEBAR_ID` and `OPEN_SIDEBAR_ID` constants for
     consistency

3. Delay focus until after animation completes
   - Changed from `requestAnimationFrame` to `setTimeout(..., 250)`
   - Animation duration is 200ms; 250ms ensures completion
   - Prevents layout thrashing during animation

4. Clean up prop drilling
   - Removed `openSidebarRef`/`closeSidebarRef` from Root.tsx context
   - Simplified Nav.tsx, Header.tsx, NewChat.tsx prop signatures
   - Updated ContextType to remove ref properties

Files Changed:
--------------
- client/src/routes/Root.tsx
- client/src/components/Nav/Nav.tsx
- client/src/components/Nav/NewChat.tsx
- client/src/components/Chat/Header.tsx
- client/src/components/Chat/Menus/OpenSidebar.tsx
- client/src/common/types.ts

Accessibility Note:
-------------------
The original inner conditional was added to prevent keyboard navigation
to hidden sidebar content for screen readers. This is still handled by:
- AnimatePresence unmounting the motion.div after exit animation
- The motion.div having width: 0 during exit (content not reachable)
- Screen readers typically skip content being animated out
- Other: removed non-existant prop from BookmarkNav

Testing:
--------
- Verified smooth animation when opening sidebar (no layout shift)
- Verified smooth animation when closing sidebar (unchanged)
- Verified focus transfers correctly between open/close buttons
- Verified keyboard navigation works as expected
2025-12-11 16:36:35 -05:00
..
Bookmarks 🪦 refactor: Remove Legacy Code (#10533) 2025-12-11 16:36:12 -05:00
ExportConversation fix: Address Accessibility Issues (#10260) 2025-10-27 19:46:43 -04:00
SettingsTabs 🛗 fix: Address Accessibility Issues - Axe Rating: Serious (#10521) 2025-12-11 16:36:32 -05:00
AccountSettings.tsx 🔇 fix: Hide Button Icons from Screen Readers (#10776) 2025-12-11 16:35:17 -05:00
AgentMarketplaceButton.tsx 🔇 fix: Hide Button Icons from Screen Readers (#10776) 2025-12-11 16:35:17 -05:00
index.ts 🎨 refactor: UI stlye (#4438) 2024-10-19 08:30:52 -04:00
MobileNav.tsx 🛗 fix: Address Accessibility Issues - Axe Rating: Serious (#10521) 2025-12-11 16:36:32 -05:00
Nav.tsx 👐 fix: Open/Close Sidebar Button Animation UX Regression from #10521 (#10694) 2025-12-11 16:36:35 -05:00
NavLink.tsx 👐 style: Improve a11y/theming for Settings Dialog, Dropdown Menus; fix: SearchBar focus issues (#4091) 2024-09-21 22:45:50 -04:00
NavToggle.tsx 📦 feat: Move Shared Components to @librechat/client (#8685) 2025-07-27 12:19:01 -04:00
NewChat.tsx 👐 fix: Open/Close Sidebar Button Animation UX Regression from #10521 (#10694) 2025-12-11 16:36:35 -05:00
SearchBar.tsx 🌐 refactor: Interpolate Localization Keys (#10650) 2025-12-11 16:35:56 -05:00
Settings.tsx 🛗 fix: Address Accessibility Issues - Axe Rating: Serious (#10521) 2025-12-11 16:36:32 -05:00