Flap ledger is a production-ready tables component from BJORK UI, packaged for shadcn registries.
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"use client";
import { ThemeProvider as BjorkDemoThemeProvider } from "next-themes";
import { useCallback, useMemo, useRef, useState, useSyncExternalStore } from "react";
import { useVisibleLoop } from "@/components/ui/bjork-flap-ledger-utils/components-bjork-ui-_core-loop";
import { FLAP_LEDGER_SAMPLE_ROWS, FlapLedger, type FlapColumn, type FlapRow, type FlapStatus } from "@/components/ui/bjork-flap-ledger";
const columns: FlapColumn[] = [
{ key: "time", header: "Time", width: 5, charset: "0123456789: " },
{ key: "flight", header: "Flight", width: 6, charset: "alnum" },
{ key: "destination", header: "Destination", width: 12, charset: "alpha" },
{ key: "gate", header: "Gate", width: 3, charset: "alnum" },
{ key: "status", header: "Status", width: 11, charset: ["ON TIME", "BOARDING", "DELAYED", "GATE CLOSED", "DEPARTED"] },
];
const statusLed = (row: FlapRow): FlapStatus => {
if (row.status === "ON TIME" || row.status === "BOARDING") return "ok";
if (row.status === "DELAYED" || row.status === "GATE CLOSED") return "warn";
return "off";
};
const narrowQuery = "(max-width: 639px)";
function subscribeNarrow(onChange: () => void) {
const query = window.matchMedia(narrowQuery);
query.addEventListener("change", onChange);
return () => query.removeEventListener("change", onChange);
}
function useNarrowViewport() {
return useSyncExternalStore(
subscribeNarrow,
() => window.matchMedia(narrowQuery).matches,
() => false,
);
}
const sizes = ["sm", "md", "lg"] as const;
const cascades = ["changed", "left", "right"] as const;
function SourceDemo(){
const isPreview = false;
const previewTheme = null;
const attractParam = null === "1";
const tone = previewTheme === "light" || previewTheme === "dark" ? previewTheme : undefined;
const [sizeChoice, setSizeChoice] = useState<(typeof sizes)[number]>("sm");
const [cascade, setCascade] = useState<(typeof cascades)[number]>("changed");
const narrow = useNarrowViewport();
const size = isPreview ? "md" : narrow ? "sm" : sizeChoice;
const [step, setStep] = useState(0);
const [wrapEl, setWrapEl] = useState<HTMLDivElement | null>(null);
const wrapRef = useMemo(() => ({ current: wrapEl }), [wrapEl]);
const accRef = useRef(0);
const tick = useCallback((dt: number) => {
accRef.current += dt;
if (accRef.current >= 6) {
accRef.current = 0;
setStep((s) => (s + 1) % FLAP_LEDGER_SAMPLE_ROWS.length);
}
}, []);
useVisibleLoop(wrapRef, tick, { enabled: !isPreview && !attractParam });
const rows = FLAP_LEDGER_SAMPLE_ROWS[isPreview ? 0 : step];
return <>
<div ref={setWrapEl} className="w-full min-w-0">
<FlapLedger
columns={columns}
rows={rows}
size={size}
cascadeFrom={cascade}
status={statusLed}
ariaLabel="Departures"
tone={tone}
attract={attractParam}
/>
</div>
</>;
}
export default function BjorkRegistryPreview(){return <BjorkDemoThemeProvider attribute="class" defaultTheme="dark" enableSystem={false} storageKey="bjork-review-demo-theme"><div data-component-demo className="dark flex min-h-screen w-full items-center justify-center bg-[var(--bjork-bg)] p-8 text-[var(--bjork-text)]"><div className="w-full max-w-[850px]"><SourceDemo/></div></div></BjorkDemoThemeProvider>}