# Popover

A React component in [Beamline](https://beamline.io/)'s [Overlays](https://beamline.io/components/overlays) category. Live demo: https://beamline.io/components/popover

A small surface anchored to a trigger for a short form, a filter or an explanation; focus moves in and returns on close.

## Use it for

- Editing one value in place, quick filters, a share link, explaining a number.

## Not for

- Plain hints ([tooltip](https://beamline.io/components/tooltip)).
- A list of actions ([dropdown-menu](https://beamline.io/components/dropdown-menu)).
- Large or multi-step forms ([dialog](https://beamline.io/components/dialog) or [sheet](https://beamline.io/components/sheet)).

## Anatomy

- Popover
- PopoverTrigger
- PopoverAnchor
- PopoverContent
- PopoverClose

## Variants

- **flush**: false (padded), true (lists and footers reach the edges)
- **side**: top, right, bottom, left
- **align**: start, center, end

## States

- closed
- open
- closing

## Keyboard

- Enter / Space on the trigger opens
- Tab moves inside
- Escape closes and returns focus to the trigger

## Motion

Grows from the trigger (scale 0.97 → 1, fade) over --pui-motion-in; leaves over --pui-motion-out. Opens out of its trigger (_shared/overlay.module.css, source morph): the layer starts as the trigger's own box, offset onto it, and grows; the side next to the trigger is there at once so the nearest rows read within the ruled 90 ms, the far side settles by ~200 ms, content fades in over 90 ms; it closes back into the trigger in 180 ms. Until it has grown the press that opened it cannot land on a row. Reduced motion: it appears.

## Props

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `open / defaultOpen / onOpenChange` | `boolean` | — |  |
| `flush` | `boolean` | `false` |  |
| `side / align / sideOffset` | `string / number` | `"bottom" / "center" / 6` |  |
| `style / ref` | `native props` | — | native content div; trigger/anchor/close native refs |

## Dependencies

`@radix-ui/react-popover`

## Import

```tsx
import { PopoverContent, Popover, PopoverTrigger, PopoverAnchor, PopoverClose } from "@/components/popover/popover";
```

## Get it

Popover is part of Beamline: 190 React components and screens your coding agent (Claude Code, Codex, Cursor or any MCP client) installs into your app through Beamline's MCP server, as a ready-built package or as plain React source you can change. $49 one payment (regular $200), no subscription, a year of updates, one licence for your whole team. [Get Beamline](https://beamline.io/checkout?pack=complete) · [Connect your agent](https://beamline.io/connect)

## More in Overlays

- [Alert Dialog](https://beamline.io/components/alert-dialog): A blocking confirmation that must be answered: the scrim does not dismiss it, focus starts on the safe choice, and an async action keeps it open until…
- [Bottom sheet](https://beamline.io/components/bottom-sheet): A phone panel that rests at a peek and follows the finger to full height; a flick down closes it, and the handle works from the keyboard.
- [Command menu](https://beamline.io/components/command-menu): Search-first list of every action: ranked matching, groups, keycap shortcuts and nested pages; inline as CommandPalette or in a ⌘K dialog as CommandMenu.
- [Context menu](https://beamline.io/components/context-menu): Actions for an object on right-click, long-press, Shift+F10 or the menu key, opened at the pointer, with the same rows as the dropdown menu.
- [Dialog](https://beamline.io/components/dialog): A focused task over the page (create, invite, rename) with a title, body and footer; focus moves in, is trapped and returns on close.
- [Dropdown menu](https://beamline.io/components/dropdown-menu): A list of actions behind a trigger, with shortcuts, check items, headings and submenus; one highlight glides under the pointer and jumps with the keyboard.
- [Hover card](https://beamline.io/components/hover-card): A preview of a person, link or record on hover or keyboard focus, without leaving the page; HoverCardProfile is the standard person preview.
- [Sheet](https://beamline.io/components/sheet): A panel that slides in from an edge with the page still visible behind it: header and footer stay put while the body scrolls.
- [Toast](https://beamline.io/components/toast): Short results of an action stacked at an edge: point at the stack to fan it out and pause the timers; undo or retry in place; Alt+T, Escape and a swipe…
- [Tooltip](https://beamline.io/components/tooltip): Short supporting text for a control: opens after a moment on hover and at once on keyboard focus; inside a toolbar group the next one opens instantly.