Accordion

A state atom whose appearance (closed, opened) is a pure function of the state prop. Pass a state directly or drive it from the Remotion timeline via useCurrentState. The component reads no frame — only the state value you give it.

Installation

$ pnpm dlx shadcn@latest add @remocn/accordion

States

AccordionState is:

type AccordionState =
  | "closed"  // panel collapsed, chevron points down
  | "opened"  // panel revealed, chevron rotated 180° (points up), item background fills

opened fills the item background with bg-muted/50 (for the default variant) and rotates the chevron 180° to point upward. closed collapses the panel and resets the chevron.

Snap usage

Pass state directly — the component snaps instantly to that visual. Useful for static previews or when you drive state from your own logic:

import { Accordion } from "@/components/remocn/accordion";

export const Scene = () => <Accordion state="opened" />;

To drive state from the timeline, use useCurrentState:

import { useCurrentState } from "@/lib/remocn-ui";
import { Accordion } from "@/components/remocn/accordion";

export const Scene = () => {
  const state = useCurrentState(
    [
      { at: 18, state: "opened" },
      { at: 78, state: "closed" },
    ],
    "closed",
  );

  return <Accordion title="Is it accessible?" state={state} />;
};

Each at is a Sequence-local authored frame. State persists between steps: opened at frame 18 keeps the panel revealed until closed fires at frame 78. See Concepts for the full useCurrentState API.

Smooth transitions

State changes via state snap with no cross-fade. For animated transitions, use useAccordionTransition from the copied use-accordion-transition.ts file. It reads the frame, interpolates between state presets, and returns a resolved AccordionStyle — pass it to the style prop:

import { Accordion } from "@/components/remocn/accordion";
import { useAccordionTransition } from "@/components/remocn/use-accordion-transition";

export const Scene = () => {
  const style = useAccordionTransition([
    { at: 18, state: "opened", duration: 16 },
    { at: 78, state: "closed", duration: 12 },
  ]);
  return <Accordion title="Is it accessible?" style={style} />;
};

The duration field on each step overrides the file's DEFAULT_DURATION for that specific transition. To globally tune timing and easing, edit use-accordion-transition.ts directly in your project — that file is yours (shadcn "own your code" philosophy).

style takes precedence over state when both are provided.

Props