HTML 77.2%
TypeScript 10.5%
Python 9.6%
JavaScript 2.5%
1'use client';2import { ChevronDown, Search } from 'lucide-react';3import Link from 'next/link';4import { usePathname } from 'next/navigation';5import { useEffect, useRef, useState } from 'react';6import { Wordmark } from '@/components/brand/logo';7import { cn } from '@/lib/cn';8import { moreGroups, primaryNav, routes } from '@/lib/site';9import { DensityToggle } from './density';10import { useOpenSearch } from './search-context';11import { ThemeToggle } from './theme';1213const MORE_HREFS = moreGroups.flatMap((g) => g.items.map((i) => i.href));1415/**16 * Header: `AI Atlas | Models · Frontier · Benchmarks · Prices · Research · Graph · Changes · More ▾ | Search ⌘K | theme | density`.17 * "More" is a keyboard-accessible menu panel (Enter/Space/↓ opens, ↑↓ move, Home/End, Esc closes, click outside closes).18 * Below lg the primary nav lives in the bottom tab bar (`MobileTabBar`); the header keeps search, theme and density.19 */20export function SiteHeader() {21 const pathname = usePathname();22 const openSearch = useOpenSearch();23 const [more, setMore] = useState(false);24 const moreRef = useRef<HTMLDivElement>(null);25 const moreBtn = useRef<HTMLButtonElement>(null);2627 useEffect(() => setMore(false), [pathname]);28 useEffect(() => {29 if (!more) return;30 const onDoc = (e: MouseEvent) => {31 if (!moreRef.current?.contains(e.target as Node)) setMore(false);32 };33 const onKey = (e: KeyboardEvent) => {34 if (e.key === 'Escape') {35 setMore(false);36 moreBtn.current?.focus();37 }38 };39 document.addEventListener('mousedown', onDoc);40 document.addEventListener('keydown', onKey);41 const first = moreRef.current?.querySelector<HTMLElement>('[role="menuitem"]');42 first?.focus();43 return () => {44 document.removeEventListener('mousedown', onDoc);45 document.removeEventListener('keydown', onKey);46 };47 }, [more]);4849 const onMenuKey = (e: React.KeyboardEvent) => {50 const items = [...(moreRef.current?.querySelectorAll<HTMLElement>('[role="menuitem"]') ?? [])];51 const i = items.indexOf(document.activeElement as HTMLElement);52 if (e.key === 'ArrowDown') {53 e.preventDefault();54 items[(i + 1) % items.length]?.focus();55 } else if (e.key === 'ArrowUp') {56 e.preventDefault();57 items[(i - 1 + items.length) % items.length]?.focus();58 } else if (e.key === 'Home') {59 e.preventDefault();60 items[0]?.focus();61 } else if (e.key === 'End') {62 e.preventDefault();63 items[items.length - 1]?.focus();64 } else if (e.key === 'Tab') setMore(false);65 };6667 const isActive = (href: string) => pathname === href || pathname.startsWith(href + '/');68 const moreActive = MORE_HREFS.some(isActive) && !primaryNav.some((n) => isActive(n.href));69 const navCls = (active: boolean) => cn('flex h-9 items-center gap-1 rounded-sm px-2.5 text-[13.5px] transition-colors', active ? 'text-ink font-medium' : 'text-ink-2 hover:text-ink');7071 return (72 <header className="sticky top-0 z-40 border-b border-rule bg-canvas/85 backdrop-blur-md">73 <div className="container-x mx-auto flex h-[var(--header-h)] max-w-[1600px] items-center gap-3">74 <Link href={routes.home()} className="flex h-11 items-center" aria-label="AI Atlas home">75 <Wordmark />76 </Link>77 <nav aria-label="Primary" className="relative ml-3 hidden items-center gap-0.5 lg:flex">78 {primaryNav.map((n) => (79 <Link key={n.href} href={n.href} aria-current={isActive(n.href) ? 'page' : undefined} className={navCls(isActive(n.href))}>80 {n.label}81 </Link>82 ))}83 <div ref={moreRef} onKeyDown={onMenuKey}>84 <button85 ref={moreBtn}86 type="button"87 onClick={() => setMore((v) => !v)}88 onKeyDown={(e) => {89 if (e.key === 'ArrowDown' && !more) {90 e.preventDefault();91 setMore(true);92 }93 }}94 aria-expanded={more}95 aria-haspopup="menu"96 aria-controls="more-menu"97 className={navCls(moreActive)}98 data-more-button99 >100 More <ChevronDown className={cn('size-3.5 transition-transform', more && 'rotate-180')} aria-hidden />101 </button>102 {more && (103 <div id="more-menu" role="menu" aria-label="More" className="panel absolute left-0 top-full mt-1 w-[min(880px,calc(100vw-2rem))] p-3 shadow-lg" data-more-menu>104 <div className="grid grid-cols-4 gap-x-6">105 {moreGroups.map((g) => (106 <div key={g.label}>107 <p className="eyebrow px-2 pb-1">{g.label}</p>108 <ul>109 {g.items.map((n) => (110 <li key={n.href + n.label}>111 <Link role="menuitem" href={n.href} tabIndex={-1} className={cn('block rounded-sm px-2 py-1.5 text-sm leading-tight hover:bg-surface-2 focus:bg-surface-2 focus:outline-none', isActive(n.href) ? 'text-ink font-medium' : 'text-ink-2 hover:text-ink')}>112 {n.label}113 {n.hint && <span className="mt-0.5 block text-[11px] text-ink-3">{n.hint}</span>}114 </Link>115 </li>116 ))}117 </ul>118 </div>119 ))}120 </div>121 <div className="mt-2 flex items-center justify-between border-t border-rule px-2 pt-2 text-xs text-ink-3">122 <span>123 <kbd className="mono border border-rule px-1">⌘K</kbd> search anything · <kbd className="mono border border-rule px-1">></kbd> commands124 </span>125 <Link role="menuitem" href={routes.explore()} tabIndex={-1} className="link">126 All entity types with live counts →127 </Link>128 </div>129 </div>130 )}131 </div>132 </nav>133 <div className="ml-auto flex items-center gap-1">134 <button type="button" onClick={openSearch} className="hidden h-9 min-w-[260px] items-center gap-2 rounded-sm border border-rule bg-surface px-3 text-sm text-ink-3 hover:border-rule-strong hover:text-ink-2 md:flex" aria-label="Open search and commands" data-open-palette>135 <Search className="size-4" aria-hidden />136 <span className="flex-1 text-left">Search or run a command…</span>137 <kbd className="mono rounded-[3px] border border-rule px-1.5 py-0.5 text-[10px]">⌘K</kbd>138 </button>139 <button type="button" onClick={openSearch} className="flex size-11 items-center justify-center rounded-sm text-ink-2 hover:bg-surface-2 hover:text-ink md:hidden" aria-label="Open search">140 <Search className="size-5" aria-hidden />141 </button>142 <ThemeToggle />143 <DensityToggle />144 </div>145 </div>146 </header>147 );148}149