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Popover

Display supplementary content or information when users interact with specific elements.

	<script lang="ts">
  import { Popover, Separator, Toggle } from "bits-ui";
  import ImageSquare from "phosphor-svelte/lib/ImageSquare";
  import LinkSimpleHorizontalBreak from "phosphor-svelte/lib/LinkSimpleHorizontalBreak";
 
  let width = $state(1024);
  let height = $state(768);
</script>
 
<Popover.Root>
  <Popover.Trigger
    class="inline-flex h-10
	select-none items-center justify-center whitespace-nowrap rounded-input bg-dark px-[21px] text-[15px] font-medium text-background shadow-mini transition-all hover:cursor-pointer hover:bg-dark/95 active:scale-98"
  >
    Resize
  </Popover.Trigger>
  <Popover.Portal>
    <Popover.Content
      class="z-30 w-full max-w-[328px] rounded-[12px] border border-dark-10 bg-background p-4 shadow-popover data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2"
      sideOffset={8}
    >
      <div class="flex items-center">
        <div
          class="mr-3 flex size-12 items-center justify-center rounded-full bg-muted"
        >
          <ImageSquare class="size-6" />
        </div>
        <div class="flex flex-col">
          <h4 class="text-[17px] font-semibold leading-5 tracking-[-0.01em]">
            Resize image
          </h4>
          <p class="text-sm font-medium text-muted-foreground">
            Resize your photos easily
          </p>
        </div>
      </div>
      <Separator.Root class="-mx-4 mb-6 mt-[17px] block h-px bg-dark-10" />
      <div class="flex items-center pb-2">
        <div class="mr-2 flex items-center">
          <div class="relative mr-2">
            <span class="sr-only">Width</span>
            <span
              aria-hidden="true"
              class="absolute left-5 top-4 text-xxs text-muted-foreground"
              >W</span
            >
            <input
              type="number"
              class="h-input w-[119px] rounded-10px border border-border-input bg-background pl-10 pr-2 text-sm text-foreground"
              bind:value={width}
            />
          </div>
          <div class="relative">
            <span class="sr-only">Height</span>
            <span
              aria-hidden="true"
              class="absolute left-5 top-4 text-xxs text-muted-foreground"
              >H</span
            >
            <input
              type="number"
              class="h-input w-[119px] rounded-10px border border-border-input bg-background pl-10 pr-2 text-sm text-foreground"
              bind:value={height}
            />
          </div>
        </div>
        <Toggle.Root
          aria-label="toggle constrain portions"
          class="inline-flex size-10 items-center justify-center rounded-[9px] bg-background transition-all hover:bg-muted active:scale-98 data-[state=on]:bg-muted"
        >
          <LinkSimpleHorizontalBreak class="size-6" />
        </Toggle.Root>
      </div>
    </Popover.Content>
  </Popover.Portal>
</Popover.Root>

Structure

	<script lang="ts">
	import { Popover } from "bits-ui";
</script>
 
<Popover.Root>
	<Popover.Trigger />
	<Popover.Content>
		<Popover.Close />
		<Popover.Arrow />
	</Popover.Content>
</Popover.Root>

API Reference

Popover.Root

The root component used to manage the state of the state of the popover.

Property Type Description
open bindable prop
boolean

The open state of the link popover component.

Default: false
onOpenChange
function

A callback that fires when the open state changes.

Default: undefined
children
Snippet

The children content to render.

Default: undefined

Popover.Trigger

A component which toggles the opening and closing of the popover on press.

Property Type Description
child
Snippet

Use render delegation to render your own element. See render delegation for more information.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
ref
HTMLButtonElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
Data Attribute Value Description
data-state
enum

The open state of the link preview.

data-popover-trigger
——

Present on the trigger element.

Popover.Content

The contents of the popover which are displayed when the popover is open.

Property Type Description
side
enum

The preferred side of the anchor to render the floating element against when open. Will be reversed when collisions occur.

Default: bottom
sideOffset
number

The distance in pixels from the anchor to the floating element.

Default: 0
align
enum

The preferred alignment of the anchor to render the floating element against when open. This may change when collisions occur.

Default: start
alignOffset
number

The distance in pixels from the anchor to the floating element.

Default: 0
arrowPadding
number

The amount in pixels of virtual padding around the viewport edges to check for overflow which will cause a collision.

Default: 0
avoidCollisions
boolean

When true, overrides the side and align options to prevent collisions with the boundary edges.

Default: true
collisionBoundary
union

A boundary element or array of elements to check for collisions against.

Default: undefined
collisionPadding
union

The amount in pixels of virtual padding around the viewport edges to check for overflow which will cause a collision.

Default: 0
sticky
enum

The sticky behavior on the align axis. 'partial' will keep the content in the boundary as long as the trigger is at least partially in the boundary whilst 'always' will keep the content in the boundary regardless.

Default: partial
hideWhenDetached
boolean

When true, hides the content when it is detached from the DOM. This is useful for when you want to hide the content when the user scrolls away.

Default: true
updatePositionStrategy
enum

The strategy to use when updating the position of the content. When 'optimized' the content will only be repositioned when the trigger is in the viewport. When 'always' the content will be repositioned whenever the position changes.

Default: optimized
strategy
enum

The positioning strategy to use for the floating element. When 'fixed' the element will be positioned relative to the viewport. When 'absolute' the element will be positioned relative to the nearest positioned ancestor.

Default: fixed
preventScroll
boolean

When true, prevents the body from scrolling when the content is open. This is useful when you want to use the content as a modal.

Default: true
onInteractOutside
function

Callback fired when an outside interaction event completes, which is either a pointerup, mouseup, or touchend event, depending on the user's input device. You can call event.preventDefault() to prevent the default behavior of handling the outside interaction.

Default: undefined
onInteractOutsideStart
function

Callback fired when an outside interaction event starts, which is either a pointerdown, mousedown, or touchstart event, depending on the user's input device. You can call event.preventDefault() to prevent the continuation of the outside interaction.

Default: undefined
onFocusOutside
function

Callback fired when focus leaves the dismissable layer. You can call event.preventDefault() to prevent the default behavior on focus leaving the layer.

Default: undefined
interactOutsideBehavior
enum

The behavior to use when an interaction occurs outside of the floating content. 'close' will close the content immediately. 'ignore' will prevent the content from closing. 'defer-otherwise-close' will defer to the parent element if it exists, otherwise it will close the content. 'defer-otherwise-ignore' will defer to the parent element if it exists, otherwise it will ignore the interaction.

Default: close
onEscapeKeydown
function

Callback fired when an escape keydown event occurs in the floating content. You can call event.preventDefault() to prevent the default behavior of handling the escape keydown event.

Default: undefined
escapeKeydownBehavior
enum

The behavior to use when an escape keydown event occurs in the floating content. 'close' will close the content immediately. 'ignore' will prevent the content from closing. 'defer-otherwise-close' will defer to the parent element if it exists, otherwise it will close the content. 'defer-otherwise-ignore' will defer to the parent element if it exists, otherwise it will ignore the interaction.

Default: close
onMountAutoFocus
function

Event handler called when auto-focusing the content as it is mounted. Can be prevented.

Default: undefined
onDestroyAutoFocus
function

Event handler called when auto-focusing the content as it is destroyed. Can be prevented.

Default: undefined
preventOverflowTextSelection
boolean

When true, prevents the text selection from overflowing the bounds of the element.

Default: true
forceMount
boolean

Whether or not to forcefully mount the content. This is useful if you want to use Svelte transitions or another animnation library for the content.

Default: false
dir
enum

The reading direction of the app.

Default: ltr
child
Snippet

Use render delegation to render your own element. See render delegation for more information.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
ref
HTMLDivElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
Data Attribute Value Description
data-state
enum

The open state of the popover.

data-popover-content
——

Present on the content element.

Popover.Close

A button which closes the popover when pressed and is typically placed in the content.

Property Type Description
child
Snippet

Use render delegation to render your own element. See render delegation for more information.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
ref
HTMLButtonElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
Data Attribute Value Description
data-popover-close
——

Present on the close button.

Popover.Arrow

An optional arrow element which points to the trigger when the popover is open.

Property Type Description
width
number

The width of the arrow in pixels.

Default: 8
height
number

The height of the arrow in pixels.

Default: 8
child
Snippet

Use render delegation to render your own element. See render delegation for more information.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
ref
HTMLDivElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
Data Attribute Value Description
data-arrow
——

Present on the arrow element.

data-popover-arrow
——

Present on the arrow element.

Examples

Controlled

If you want to control or be aware of the open state of the popover from outside of the component, bind to the open prop.

	<script lang="ts">
	import { Popover } from "bits-ui";
	let popoverOpen = false;
</script>
 
<button on:click={() => (popoverOpen = true)}>Open</button>
<Popover.Root bind:open={popoverOpen}>
	<Popover.Trigger />
	<Popover.Content>
		<Popover.Close />
		<Popover.Arrow />
	</Popover.Content>
</Popover.Root>