Gantt

A project schedule with dependencies that push each other when you drag.

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Category: Productivity
Access: ProPro · unlocked
Source: 551 lines · one file
States: 8 drawn
Added: 2 Nov 2026

The decision inside it

Dragging a task pushes what depends on it

Move a task late and every task that depends on it slides with it, live, with the new finish date shown before you let go. A move that would start a task before the one it waits on is refused with the reason, and the batch is saved together or not at all.

When to use it

Use Gantt for project schedules with dependencies: launches, roadmaps, implementation plans. For work in columns by status use Kanban Board.

Installation

How you get it

Paste this into Claude Code, Cursor, Codex or any coding agent. It installs the file and uses it as it is, instead of writing a new one.

Use Liro's Gantt for this.
Install it: npx shadcn@latest add @liro/gantt
(the @liro registry is set up in components.json, with LIRO_KEY in .env.local)
Import it from @/components/ui/gantt.
Do not rewrite or restyle it. Pass my data through its props
and keep its built-in states.

For the full brief with every prop and the mistakes assistants usually make, use Copy prompt above. Pro components install through the @liro registry with your CLI token: see the Namespaced tab.

Usage

components/project-plan.tsx

import { Gantt, type GanttMove, type GanttTask } from "@/components/ui/gantt";

export function ProjectPlan({ tasks, api }: { tasks: GanttTask[]; api: { reschedule: (moved: GanttMove[]) => Promise<void> } }) {
  return <Gantt title="Launch plan" tasks={tasks} onChange={api.reschedule} />;
}

API reference

“Copy prompt” above puts a full brief on your clipboard, install command, dependencies, props, and the mistakes an assistant usually makes with this component.

Props

Read from the component’s own TypeScript interface when the site is built, so this table cannot drift from the file you install.

	Type		Notes
`tasks`	`GanttTask[]`	Yes	–
`onChange`	`(moved: GanttMove[]) => void \| Promise<void>`	No	Every task a drag moved, the dragged one first. May return a promise; if it rejects, they all go back.
`scale`	`GanttScale`	No	–
`defaultScale`	`GanttScale`	No	–
`onScaleChange`	`(scale: GanttScale) => void`	No	–
`title`	`string`	No	–
`now`	`Date \| number`	No	Fix "today", for screenshots and tests.
`look`	`Look`	No	–

Dependencies

npm packages

clsxframer-motionlucide-reacttailwind-merge

Liro foundations, installed alongside it

liro-theme

States

All of them are drawn by the component. None is left for you to design.

Plan
Dragging
Pushed tasks
Refused move
Saving
Save failed
Zoomed out
Empty

Accessibility

Keyboard reachable throughout, in visual order
Focus trapped in overlays, Escape closes them
Focus returns to whatever opened it
Live regions announce what changed, not that something did
Honours prefers-reduced-motion

Responsive behavior

Sizes to its container, not the viewport
Usable from 320px up
Pointer-based interaction, so trackpad and touch both work
No hover-only affordances