Progress

npm install react-aria-components

"use client";

import type { ReactNode } from "react";
import { Label, ProgressBar, type ProgressBarProps } from "react-aria-components";

const styles = {
  root: "block font-(family-name:--tui-font) text-(length:--tui-progress-font-size) leading-none font-(--tui-progress-font-weight)",
  // Like the kit's slider, the bar carries its own name and number, and they change colour as the fill passes.
  track: "relative h-(--tui-progress-height) w-full overflow-hidden rounded-(--tui-progress-radius) bg-(--tui-progress-track) text-(--tui-progress-fg)",
  row: "absolute inset-y-0 left-0 flex items-center justify-between gap-3 px-(--tui-progress-padding-x)",
  fill: "absolute inset-y-0 left-0 overflow-hidden bg-(--tui-progress-fill) text-(--tui-progress-fill-fg) transition-[width] duration-(--tui-progress-duration) ease-out",
  moving: "absolute inset-y-0 w-2/5 rounded-(--tui-progress-radius) bg-(--tui-progress-fill) opacity-80 [animation:tui-air-slide_1.4s_ease-in-out_infinite]",
};

export interface ProgressProps extends Omit<ProgressBarProps, "className" | "children"> {
  label?: string;
  /** Leaves the number off the bar. */
  hideValue?: boolean;
  className?: string;
}

export function Progress({ label, hideValue, className, ...props }: ProgressProps) {
  return (
    <ProgressBar {...props} className={[styles.root, className].filter(Boolean).join(" ")}>
      {({ percentage, valueText, isIndeterminate }) => {
        const part = Math.min(Math.max((percentage ?? 0) / 100, 0), 1);
        const words = (name: ReactNode) => (
          <>
            {name}
            {!hideValue && !isIndeterminate && <span className="tabular-nums">{valueText}</span>}
          </>
        );
        return (
          <div data-slot="progress-track" className={styles.track}>
            <div className={`${styles.row} w-full`}>{words(label ? <Label>{label}</Label> : <span />)}</div>
            {isIndeterminate ? (
              <div data-slot="progress-fill" className={styles.moving} />
            ) : (
              <div aria-hidden data-slot="progress-fill" className={styles.fill} style={{ width: `${part * 100}%` }}>
                {/* The fill keeps its own copy of the words at the bar's full width, so they sit exactly over the ones beneath. */}
                <div className={styles.row} style={{ width: part > 0 ? `${100 / part}%` : 0 }}>
                  {words(<span>{label}</span>)}
                </div>
              </div>
            )}
          </div>
        );
      }}
    </ProgressBar>
  );
}

:root {
  color-scheme: light;
  --tui-bg: #ffffff;
  --tui-fg: #0a0a0a;
  --tui-muted: #f5f5f5;
  --tui-muted-fg: #737373;
  --tui-border: #e5e5e5;
  --tui-primary: #171717;
  --tui-primary-fg: #fafafa;
  --tui-ring: #a3a3a3;
  --tui-success: #16a34a;
  --tui-warning: #d97706;
  --tui-danger: #dc2626;
  --tui-radius: 8px;
  --tui-border-width: 1px;
  --tui-space: 4px;
  --tui-shadow: none;
  --tui-font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --tui-text: 14px;
  --tui-duration: 150ms;

  /* Progress */
  --tui-progress-height: calc(var(--tui-space) * 10);
  --tui-progress-padding-x: calc(var(--tui-space) * 4);
  --tui-progress-radius: calc(var(--tui-radius) * 1.75);
  --tui-progress-font-size: var(--tui-text);
  --tui-progress-font-weight: 500;
  --tui-progress-duration: 360ms;
  --tui-progress-track: color-mix(in srgb, var(--tui-bg) 94%, var(--tui-fg));
  --tui-progress-fg: var(--tui-fg);
  --tui-progress-fill: var(--tui-primary);
  --tui-progress-fill-fg: var(--tui-primary-fg);
}

.dark,
[data-theme="dark"] {
  color-scheme: dark;
  --tui-bg: #0a0a0a;
  --tui-fg: #fafafa;
  --tui-muted: #1c1c1c;
  --tui-muted-fg: #a3a3a3;
  --tui-border: #2a2a2a;
  --tui-primary: #fafafa;
  --tui-primary-fg: #171717;
  --tui-ring: #737373;
  --tui-success: #22c55e;
  --tui-warning: #f59e0b;
  --tui-danger: #ef4444;
}

@keyframes tui-air-slide {
  0% { left: -40%; }
  100% { left: 100%; }
}