Popover

A React component in Beamline's Overlays category.

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

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

PropTypeDefaultDescription
open / defaultOpen / onOpenChangeboolean—
flushbooleanfalse
side / align / sideOffsetstring / number"bottom" / "center" / 6
style / refnative props—native content div; trigger/anchor/close native refs

Dependencies

@radix-ui/react-popover

Import

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 · Connect your agent

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