# Task detail (Notchset): prompt.md (v2.1.0)

- id: `task-detail` · version 2.1.0 · block · pro (Pro)
- category: Data
- build: one set of files for every shadcn style
- install: `npx shadcn@latest add @notchset-pro/task-detail`
- npm dependencies: lucide-react@^1
- registry dependencies: utils, https://notchset.dev/r/notchset-foundation.json, @notchset/banner, @notchset/checkbox, @notchset/tabs
- docs: https://notchset.dev/blocks/task-detail
- The install command carries everything this item needs (files, CSS, tokens, npm and registry dependencies). Prefer it to copying source by hand.

A task in a side panel or on its page: its title edited in place, the one condition to act on as a banner with its fix, the property pills, details on demand, the description, the host's sections (subtasks, what it waits on, files) and the conversation. A refused save keeps the words..

## Build it
- Stack: React 18.3 or 19, TypeScript, Tailwind CSS v4 utility classes on the foundation's roles, a components.json (imports use its aliases).
- Packages: `lucide-react@^1`.
- Files: `components/ui/notchset/blocks/task-detail.tsx`.
- Registry dependencies, installed with it automatically: shadcn `utils` (cn), `notchset-foundation`, `banner`, `checkbox`, `tabs`.
- Builds: one set of files, the same for every shadcn style.
- Exports to keep: `TaskDetail`, and every exported type.
- CSS: the install adds the notchset foundation (its roles, keyframes and motion switch, reading your shadcn tokens for colour) to your global stylesheet once. Nothing to import by hand.
- Re-running `add` (or `--overwrite`) re-applies those rules: put overrides in your own CSS, never in the installed rules.
- Colours: every part reads the foundation's roles (`--ns-canvas`, `--ns-ink`, `--ns-line`, `--ns-signal` …), which read your shadcn tokens (`--background`, `--foreground`, `--border`, `--destructive` …), plus the optional `--success` and `--warning`. Retheme on `:root` or any container; never add Tailwind colour classes inside the component.
- This item reads `--ns-ease`, `--ns-font-display`, `--ns-hover`, `--ns-ink`, `--ns-ink-2`, `--ns-ink-3`, `--ns-line`, `--ns-line-soft`, `--ns-ok`, `--ns-radius`, `--ns-radius-lg`, `--ns-raised`, `--ns-signal`, `--ns-text-page`, `--ns-text-small`, `--ns-text-strong`, `--ns-text-title`, `--ns-time-color`, `--ns-time-dialog`, `--ns-weight-medium`, `--ns-weight-regular`, `--ns-weight-strong`.
- Retune it (on any ancestor) with the foundation's roles and hooks: `--ns-bad`, `--ns-bad-ink`, `--ns-band`, `--ns-band-edge`, `--ns-band-grade`, `--ns-band-optimal`, `--ns-beat`, `--ns-bezel`, `--ns-canvas`, `--ns-cat-1`, `--ns-cat-2`, `--ns-cat-3`, `--ns-cat-4`, `--ns-cat-5`, `--ns-cat-6`, `--ns-check`, `--ns-chip`, `--ns-control`, `--ns-control-pad`, `--ns-control-sm`, `--ns-deep`, `--ns-deep-ink`, `--ns-deep-ink-2`, `--ns-deep-line`, `--ns-dialog`, `--ns-dialog-lg`, `--ns-dialog-sm`, `--ns-ease`, `--ns-ease-in`, `--ns-ease-panel`, `--ns-ease-pop`, `--ns-field`, `--ns-flood-arc`, `--ns-flood-aurora`, `--ns-flood-behind-1`, `--ns-flood-behind-2`, `--ns-flood-bloom`, `--ns-flood-deep`, `--ns-flood-dial-bloom`, `--ns-flood-glass`, `--ns-flood-grain`, `--ns-flood-image`, `--ns-flood-ink`, `--ns-flood-ink-low`, `--ns-flood-light`, `--ns-flood-mid`, `--ns-flood-pale`, `--ns-flood-pane`, `--ns-flood-pane-edge`, `--ns-flood-pill-ink`, `--ns-flood-ribbon`, `--ns-flood-ribbon-core`, `--ns-flood-shadow`, `--ns-flood-sheen`, `--ns-flood-wash`, `--ns-font-body`, `--ns-font-display`, `--ns-font-mono`, `--ns-font-script`, `--ns-glass`, `--ns-glass-blur`, `--ns-glass-shadow`, `--ns-glow`, `--ns-grain`, `--ns-gutter`, `--ns-header`, `--ns-heat`, `--ns-hover`, `--ns-ink`, `--ns-ink-2`, `--ns-ink-3`, `--ns-ink-4`, `--ns-leading`, `--ns-lift`, `--ns-light-1`, `--ns-light-2`, `--ns-light-3`, `--ns-light-spread`, `--ns-light-strength`, `--ns-line`, `--ns-line-soft`, `--ns-lit-edge`, `--ns-menu-dy`, `--ns-menu-row`, `--ns-mesh`, `--ns-mesh-frost`, `--ns-ok`, `--ns-ok-ink`, `--ns-orb-body`, `--ns-orb-cool`, `--ns-orb-core`, `--ns-orb-dawn`, `--ns-orb-deep`, `--ns-orb-edge`, `--ns-orb-grain`, `--ns-orb-ground`, `--ns-orb-halo`, `--ns-orb-inner`, `--ns-orb-key`, `--ns-orb-lift`, `--ns-orb-limb`, `--ns-orb-limb-from`, `--ns-orb-rim`, `--ns-orb-skin-hi`, `--ns-orb-skin-lo`, `--ns-orb-skin-mid`, `--ns-orb-warm`, `--ns-panel`, `--ns-panel-w`, `--ns-prism-edge`, `--ns-prism-glint`, `--ns-prism-sheen`, `--ns-prism-tint`, `--ns-pulse`, `--ns-radius`, `--ns-radius-card`, `--ns-radius-full`, `--ns-radius-lg`, `--ns-radius-sm`, `--ns-radius-xl`, `--ns-raised`, `--ns-range`, `--ns-row`, `--ns-row-compact`, `--ns-segment`, `--ns-selected`, `--ns-series`, `--ns-series-core`, `--ns-series-lilac`, `--ns-series-tint`, `--ns-shadow-dialog`, `--ns-shadow-float`, `--ns-shadow-panel`, `--ns-sheet`, `--ns-sheet-bottom`, `--ns-side`, `--ns-signal`, `--ns-sleep-awake`, `--ns-sleep-deep`, `--ns-sleep-light`, `--ns-sleep-rem`, `--ns-space-1`, `--ns-space-2`, `--ns-space-3`, `--ns-space-4`, `--ns-space-5`, `--ns-space-6`, `--ns-space-8`, `--ns-space-section`, `--ns-stack-on`, `--ns-standing-critical`, `--ns-standing-in`, `--ns-standing-out`, `--ns-state-doing`, `--ns-state-done`, `--ns-state-review`, `--ns-state-todo`, `--ns-switch-h`, `--ns-switch-w`, `--ns-text-body`, `--ns-text-control`, `--ns-text-display`, `--ns-text-figure`, `--ns-text-headline`, `--ns-text-hero`, `--ns-text-lede`, `--ns-text-meta`, `--ns-text-page`, `--ns-text-record`, `--ns-text-small`, `--ns-text-strong`, `--ns-text-sub`, `--ns-text-title`, `--ns-tile-shadow`, `--ns-time-born`, `--ns-time-color`, `--ns-time-dialog`, `--ns-time-menu`, `--ns-time-page`, `--ns-time-panel`, `--ns-time-toast`, `--ns-tint`, `--ns-tint-ink`, `--ns-toast-bottom`, `--ns-toast-left`, `--ns-touch`, `--ns-tracking-display`, `--ns-tracking-headline`, `--ns-warn`, `--ns-warn-ink`, `--ns-wash-clay`, `--ns-wash-dusk`, `--ns-wash-graphite`, `--ns-wash-ink`, `--ns-wash-sage`, `--ns-wash-sand`, `--ns-weight-light`, `--ns-weight-medium`, `--ns-weight-regular`, `--ns-weight-strong`, `--ns-well`.
- Never add Tailwind colour classes inside the component.

```tsx
import { PriorityMark } from "@/components/ui/notchset/priority-mark";
```

## Parts
- A single export that takes props.

## Match the original
- Read `components/ui/notchset/blocks/task-detail.tsx` as the reference implementation before changing or recreating anything, and match it: sizes, colours per theme, motion timings, copy and behaviour.
- If you deviate (a prop you can't honour, a style you changed, a dependency you swapped), say so in your reply, part by part.
- Keep the accessibility contract, the keyboard map and the motion levels listed below.

## Use it when

### Not when

## Built from
- banner (`banner`), installed with it: reuse it, don't rebuild it
- checkbox (`checkbox`), installed with it: reuse it, don't rebuild it
- tabs (`tabs`), installed with it: reuse it, don't rebuild it

## Mistakes
- Recreating the component instead of installing it

## Usage

```tsx
"use client";
import * as React from "react";
import { CalendarDays, Tag } from "lucide-react";
import { PriorityMark } from "@/components/ui/notchset/priority-mark";
import { PropertyPill } from "@/components/ui/notchset/property-pill";
import { StatusGlyph } from "@/components/ui/notchset/status-glyph";
import { ReplyComposer } from "@/components/ui/notchset/blocks/reply-composer";
import { TaskDetail } from "@/components/ui/notchset/blocks/task-detail";

const PEOPLE = [
  { id: "hana", name: "Hana Moriyama", hint: "QA engineer" },
  { id: "tomas", name: "Tomás Ferreira", hint: "Backend engineer" },
];

export default function TaskDetailDemo() {
  const [title, setTitle] = React.useState("Recalculate ETA when a job runs long");
  const [desc, setDesc] = React.useState("When a job runs past its estimate, every later stop's ETA should move.");
  const [subs, setSubs] = React.useState([
    { title: "Listen for job-overrun events", done: true },
    { title: "Send the 'running late' text once per stop", done: false },
  ]);
  const [more, setMore] = React.useState(false);
  const [late, setLate] = React.useState(true);
  const [tab, setTab] = React.useState("comments");
  const [draft, setDraft] = React.useState("");
  const [thread, setThread] = React.useState(["Tested with a 40-stop route: ETAs move."]);
  return (
    <div className="w-full max-w-[600px]">
      <TaskDetail
        title={title}
        onTitleChange={(t) => (t ? setTitle(t) : undefined)}
        banner={late ? { tone: "bad", icon: <CalendarDays />, title: "Overdue", detail: "by 1 day", action: { label: "Move to tomorrow", onClick: () => setLate(false) } } : undefined}
        properties={
          <>
            <PropertyPill kind="Status" icon={<StatusGlyph status="review" label={title} />}>In review</PropertyPill>
            <PropertyPill kind="Due" tone={late ? "bad" : undefined} icon={<CalendarDays />}>{late ? "Yesterday" : "Tomorrow"}</PropertyPill>
            <PropertyPill kind="Priority" icon={<PriorityMark priority={3} />}>High</PropertyPill>
            <PropertyPill kind="Labels" icon={<Tag />}>Backend</PropertyPill>
          </>
        }
        details={{ open: more, onToggle: () => setMore(!more), items: [{ label: "Project", value: "Route planner v2" }, { label: "Started", value: "Wed, Oct 14" }] }}
        description={desc}
        onDescriptionChange={setDesc}
        checklist={{ items: subs, onToggle: (i) => setSubs((s) => s.map((x, k) => (k === i ? { ...x, done: !x.done } : x))) }}
        thread={{
          tabs: [{ value: "comments", label: "Comments", count: thread.length }, { value: "activity", label: "Activity" }],
          value: tab,
          onChange: setTab,
          body: tab === "comments" ? <ul className="m-0 flex list-none flex-col gap-2 p-0">{thread.map((c, i) => <li key={i}>{c}</li>)}</ul> : <p className="m-0 text-[var(--ns-ink-3)]">Hana sent it for review yesterday.</p>,
          composer: (
            <ReplyComposer
              mode="comment"
              mentions={PEOPLE}
              value={draft}
              onValueChange={setDraft}
              onSend={() => {
                setThread((t) => [...t, draft]);
                setDraft("");
              }}
              onDiscard={() => setDraft("")}
              placeholder="Leave a comment… @ to mention"
              canSend={!!draft.trim()}
            />
          ),
        }}
      />
    </div>
  );
}
```

This example also uses `priority-mark` (https://notchset.dev/components/priority-mark), `property-pill` (https://notchset.dev/components/property-pill), `reply-composer` (https://notchset.dev/blocks/reply-composer), `status-glyph` (https://notchset.dev/components/status-glyph). Installing this item doesn't bring them; to paste the example as it is: `npx shadcn@latest add @notchset-pro/task-detail @notchset/priority-mark @notchset/property-pill @notchset-pro/reply-composer @notchset/status-glyph`. The `@notchset-pro` items are Pro: they need the registries in components.json and the key (Setup).

## Props

| Prop | Type | Default | What it does |
|---|---|---|---|
| `title` | `string` |  | Required. |
| `onTitleChange` | `(title: string) => boolean \| void` |  | a refused save returns false and the words stay as typed |
| `done` | `boolean` |  | strikes the title |
| `banner` | `{ tone: "neutral" \| "warn" \| "bad" \| "ok"; icon?: React.ReactNode; title: React.ReactNode; detail?: React.ReactNode; action?: { label: string; onClick: () => void } \| undefined }` |  | the one condition to act on, with its fix |
| `properties` | `React.ReactNode` |  | the property pills |
| `details` | `{ items: { label: string; value: React.ReactNode }[]; open: boolean; onToggle: () => void }` |  | further facts, folded until asked for; the host keeps whether they're open |
| `description` | `string` |  | Required. |
| `onDescriptionChange` | `(text: string) => boolean \| void` |  | Required. |
| `descriptionPlaceholder` | `string` | `"Add what someone picking this up needs to know."` |  |
| `checklist` | `{ items: { title: string; done: boolean }[]; onToggle: (index: number) => void }` |  |  |
| `sections` | `{ key: string; title: string; count?: number \| undefined; body: React.ReactNode }[]` | `[]` | further sections in order (what it waits on, its files), each with a title and an optional count |
| `thread` | `{ tabs: { value: string; label: string; count?: number \| undefined }[]; value: string; onChange: (v: string) => void; body: React.ReactNode; composer?: React.ReactNode }` |  | the conversation: its tabs (Comments, Activity), what the chosen one shows, and the composer under it |
| `mode` | `"panel" \| "page"` | `"panel"` | "page" sets the title larger and the column narrower, for a task opened on its own page |

Full docs: https://notchset.dev/blocks/task-detail

## Customising
- Colours: every part reads the foundation's roles (`--ns-canvas`, `--ns-ink`, `--ns-line`, `--ns-signal` …), which read your shadcn tokens (`--background`, `--foreground`, `--border`, `--destructive` …), plus the optional `--success` and `--warning`. Retheme on `:root` or any container; never add Tailwind colour classes inside the component.
- Dark mode follows the `.dark` class or `data-theme="dark"` on an ancestor (the shadcn and next-themes conventions).
- Update later: Commit or stash local changes first (or copy the files), so the update can be undone. Read https://notchset.dev/r/changelog.json for the new versions: a major version, an entry marked breaking or a merge says what to change. Then re-run the install with `--overwrite`, on a branch. It replaces the component's files, the shared helper files they import, and the item's CSS rules in the global stylesheet, so review the whole diff (components, shared files, CSS), re-apply your own edits, and run the app's typecheck, tests and build.

## Accessibility contract (preserve when editing)

## Install

```bash
npx shadcn@latest add @notchset-pro/task-detail
```

Pro item: needs the `@notchset-pro` registry in `components.json` and `NOTCHSET_TOKEN` in `.env.local` (https://notchset.dev/account). Setup: https://notchset.dev/docs/pro. Every components.json `style` gets the same files.

The foundation (the tokens listed above, keyframes and motion levels) installs once with the first component; its CSS is public at https://notchset.dev/r/notchset-foundation.json.