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| Usage, Billing settings and prepaid AI credit; fixes from the UX audit | 1 | import { type CSSProperties, type ReactNode, useEffect, useRef, useState } from "react"; |
| 2 | import { useLocation } from "react-router"; | |
| 3 | ||
| 4 | import { cn } from "../../lib/cn"; | |
| 5 | ||
| 6 | /** How far the fade reaches in from an edge with more tabs past it. */ | |
| 7 | const FADE = "1.5rem"; | |
| 8 | ||
| 9 | /** The fade at either end that has more tabs beyond it. */ | |
| 10 | function fade(start: boolean, end: boolean): CSSProperties | undefined { | |
| 11 | if (!start && !end) return undefined; | |
| 12 | const mask = `linear-gradient(to right, ${start ? "transparent" : "#000"}, #000 ${start ? FADE : "0px"}, #000 calc(100% - ${end ? FADE : "0px"}), ${end ? "transparent" : "#000"})`; | |
| 13 | return { maskImage: mask, WebkitMaskImage: mask }; | |
| 14 | } | |
| 15 | ||
| 16 | /** The current tab (`aria-current="page"` or `data-active`) scrolled into view, without scrolling the page. */ | |
| 17 | function reveal(strip: HTMLElement) { | |
| 18 | // A tab that says it is current wins over a link that only contains the address. | |
| 19 | const current = strip.querySelector<HTMLElement>('[data-active="true"]') ?? strip.querySelector<HTMLElement>('[aria-current="page"]'); | |
| 20 | if (!current) return; | |
| 21 | const left = current.offsetLeft; | |
| 22 | const right = left + current.offsetWidth; | |
| 23 | if (left < strip.scrollLeft) strip.scrollLeft = Math.max(0, left - 24); | |
| 24 | else if (right > strip.scrollLeft + strip.clientWidth) strip.scrollLeft = right - strip.clientWidth + 24; | |
| 25 | } | |
| 26 | ||
| 27 | /** | |
| 28 | * A row of tabs that never wraps: on a narrow screen it scrolls sideways, | |
| 29 | * with no scrollbar, faded at an edge that has more beyond it, and the | |
| 30 | * current tab (`aria-current="page"` or `data-active`) kept in view. | |
| 31 | */ | |
| 32 | export function TabStrip({ label, className, children }: { label?: string; className?: string; children: ReactNode }) { | |
| 33 | const ref = useRef<HTMLElement>(null); | |
| 34 | const [edges, setEdges] = useState({ start: false, end: false }); | |
| 35 | const { pathname, search } = useLocation(); | |
| 36 | ||
| 37 | useEffect(() => { | |
| 38 | const strip = ref.current; | |
| 39 | if (!strip) return; | |
| 40 | const measure = () => { | |
| 41 | const start = strip.scrollLeft > 1; | |
| 42 | const end = strip.scrollLeft + strip.clientWidth < strip.scrollWidth - 1; | |
| 43 | setEdges((now) => (now.start === start && now.end === end ? now : { start, end })); | |
| 44 | }; | |
| 45 | measure(); | |
| 46 | strip.addEventListener("scroll", measure, { passive: true }); | |
| 47 | // A new width (the first layout, a rotated phone) can hide the current tab. | |
| 48 | const observer = | |
| 49 | typeof ResizeObserver === "undefined" | |
| 50 | ? null | |
| 51 | : new ResizeObserver(() => { | |
| 52 | reveal(strip); | |
| 53 | measure(); | |
| 54 | }); | |
| 55 | observer?.observe(strip); | |
| 56 | return () => { | |
| 57 | strip.removeEventListener("scroll", measure); | |
| 58 | observer?.disconnect(); | |
| 59 | }; | |
| 60 | }, []); | |
| 61 | ||
| 62 | useEffect(() => { | |
| 63 | if (ref.current) reveal(ref.current); | |
| 64 | }, [pathname, search]); | |
| 65 | ||
| 66 | return ( | |
| 67 | <nav | |
| 68 | ref={ref} | |
| 69 | aria-label={label} | |
| 70 | style={fade(edges.start, edges.end)} | |
| 71 | className={cn( | |
| 72 | "relative flex overflow-x-auto overflow-y-hidden whitespace-nowrap [scrollbar-width:none] [&::-webkit-scrollbar]:hidden [&>*]:shrink-0", | |
| 73 | className, | |
| 74 | )} | |
| 75 | > | |
| 76 | {children} | |
| 77 | </nav> | |
| 78 | ); | |
| 79 | } |