FrameworkStyle

media-popover

A popover component for displaying contextual content anchored to a trigger

Anatomy

<media-popover>
  <button>Open</button>
  <div>Content</div>
</media-popover>

Behavior

Displays contextual content anchored to a trigger element. By default, opens on click and closes when clicking outside, pressing Escape, or when the trigger loses focus.

Set openOnHover to open on pointer hover instead of click. Use delay and closeDelay to control timing for hover interactions.

The side and align props control popup placement relative to the trigger. The popup repositions automatically to stay within viewport bounds.

In HTML, the media-popover element wraps a trigger (first child button) and popup content (second child). The element manages open/close state and positioning automatically.

Styling

Use CSS custom properties for positioning offsets:

media-popover {
  --media-popover-side-offset: 8px;
  --media-popover-align-offset: 0px;
}

Style based on open state and transition phases:

media-popover[data-open] .popup {
  display: block;
}
media-popover[data-starting-style] .popup {
  opacity: 0;
}
media-popover[data-ending-style] .popup {
  opacity: 0;
}

Accessibility

The trigger receives aria-expanded reflecting the open state. When modal is set, the popup receives aria-modal="true". Closing via Escape is enabled by default and can be disabled with closeOnEscape={false}.

Examples

Basic Usage

Popover content
<video-player class="html-popover-basic">
    <media-container>
        <video
            src="https://stream.mux.com/lhnU49l1VGi3zrTAZhDm9LUUxSjpaPW9BL4jY25Kwo4/highest.mp4"
            autoplay
            muted
            playsinline
            loop
        ></video>
        <div class="html-popover-basic__bar">
            <button type="button" commandfor="popover-demo" class="html-popover-basic__trigger">Settings</button>
            <media-popover id="popover-demo" class="html-popover-basic__popover">
                <div class="html-popover-basic__popup">
                    Popover content
                </div>
            </media-popover>
        </div>
    </media-container>
</video-player>

API Reference

media-popover

Props

Prop Type Default
align 'start' | 'center' | 'end' 'center'
closeDelay number 0
closeOnEscape boolean true
closeOnOutsideClick boolean true
defaultOpen boolean false
delay number 300
modal boolean | 'trap-focus' false
open boolean false
openOnHover boolean false
side 'top' | 'bottom' | 'left' | 'right' 'top'

State

State is reflected as data attributes for CSS styling.

Property Type
open boolean
status 'idle' | 'starting' | 'ending'
side 'top' | 'bottom' | 'left' | 'right'
align 'start' | 'center' | 'end'
modal boolean | 'trap-focus'
transitionStarting boolean
transitionEnding boolean

Data attributes

Attribute Type
data-open
data-side 'top' | 'bottom' | 'left' | 'right'
data-align 'start' | 'center' | 'end'
data-starting-style
data-ending-style

CSS custom properties

Variable
--media-popover-side-offset
--media-popover-align-offset
--media-popover-anchor-width
--media-popover-anchor-height
--media-popover-available-width
--media-popover-available-height
VideoJS