LayoutGlass surface
MessageScroller
Provides a scrollable message feed.
01
See it and copy it
Framework example
Choose Astro, React, or Elements to compare native usage against the shared visual output. Each example assumes the framework-level setup is already complete.
View MessageScroller code
Framework usage
Switch targets to compare the adapter code. This live preview runs the Astro example. React and Elements use their own behavior APIs; complete the matching framework setup before copying an example.---
import {
Avatar,
Bubble,
Message,
MessageScroller
} from '@santi020k/lumen-astro'
---
<MessageScroller aria-label="Conversation" style="max-height: 14rem;">
<Message>
<Avatar fallback="LU" />
<Bubble>Lumen components are installed and ready.</Bubble>
</Message>
<Message from="user">
<Avatar fallback="SM" />
<Bubble from="user">Show me the Button docs.</Bubble>
</Message>
<Message>
<Avatar fallback="LU" />
<Bubble>The Button primitive includes variants for common product actions.</Bubble>
</Message>
<Message from="user">
<Avatar fallback="SM" />
<Bubble from="user">Can I pair it with an icon?</Bubble>
</Message>
<Message>
<Avatar fallback="LU" />
<Bubble>Yes. Use the button for the action and place the icon beside the label.</Bubble>
</Message>
<Message from="user">
<Avatar fallback="SM" />
<Bubble from="user">Perfect, ship the example.</Bubble>
</Message>
</MessageScroller>import {
Avatar,
Bubble,
Message,
MessageScroller
} from '@santi020k/lumen-react'
export const Example = () => (
<>
<MessageScroller aria-label="Conversation" style={{ "maxHeight": "14rem" }}>
<Message>
<Avatar fallback="LU" />
<Bubble>Lumen components are installed and ready.</Bubble>
</Message>
<Message from="user">
<Avatar fallback="SM" />
<Bubble from="user">Show me the Button docs.</Bubble>
</Message>
<Message>
<Avatar fallback="LU" />
<Bubble>The Button primitive includes variants for common product actions.</Bubble>
</Message>
<Message from="user">
<Avatar fallback="SM" />
<Bubble from="user">Can I pair it with an icon?</Bubble>
</Message>
<Message>
<Avatar fallback="LU" />
<Bubble>Yes. Use the button for the action and place the icon beside the label.</Bubble>
</Message>
<Message from="user">
<Avatar fallback="SM" />
<Bubble from="user">Perfect, ship the example.</Bubble>
</Message>
</MessageScroller>
</>
)<script type="module">
import { defineLumenElements } from '@santi020k/lumen-elements/define'
defineLumenElements()
</script>
<lumen-message-scroller aria-label="Conversation" style="max-height: 14rem;">
<lumen-message>
<lumen-avatar fallback="LU"></lumen-avatar>
<lumen-bubble>Lumen components are installed and ready.</lumen-bubble>
</lumen-message>
<lumen-message from="user">
<lumen-avatar fallback="SM"></lumen-avatar>
<lumen-bubble from="user">Show me the Button docs.</lumen-bubble>
</lumen-message>
<lumen-message>
<lumen-avatar fallback="LU"></lumen-avatar>
<lumen-bubble>The Button primitive includes variants for common product actions.</lumen-bubble>
</lumen-message>
<lumen-message from="user">
<lumen-avatar fallback="SM"></lumen-avatar>
<lumen-bubble from="user">Can I pair it with an icon?</lumen-bubble>
</lumen-message>
<lumen-message>
<lumen-avatar fallback="LU"></lumen-avatar>
<lumen-bubble>Yes. Use the button for the action and place the icon beside the label.</lumen-bubble>
</lumen-message>
<lumen-message from="user">
<lumen-avatar fallback="SM"></lumen-avatar>
<lumen-bubble from="user">Perfect, ship the example.</lumen-bubble>
</lumen-message>
</lumen-message-scroller>02
Choose your target
Add this component
Choose the package for your runtime. All adapters share the Lumen stylesheet. Use the matching registry command when you want a local wrapper for that framework.
pnpm add @santi020k/lumen-astropnpm add @santi020k/lumen-astrolumen add MessageScrollerlumen add MessageScrollerpnpm add @santi020k/lumen-reactpnpm add @santi020k/lumen-reactlumen add MessageScroller --target reactlumen add MessageScroller --target reactpnpm add @santi020k/lumen-elementspnpm add @santi020k/lumen-elementslumen add MessageScroller --target elementslumen add MessageScroller --target elementsGlass
Add the glass prop to apply the shared blur, saturation, border, and highlight tokens. Glass reads best over vivid content, so place the surface above imagery or color.
View MessageScroller code
Framework usage
Switch targets to compare the adapter code. This live preview runs the Astro example. React and Elements use their own behavior APIs; complete the matching framework setup before copying an example.---
import { Bubble, Message, MessageScroller } from '@santi020k/lumen-astro'
---
<div class="docs-glass-demo">
<MessageScroller glass style="--ui-list-height: 13rem;">
<Message><Bubble>The scroller frame is frosted; bubbles inside go translucent too.</Bubble></Message>
<Message from="user"><Bubble from="user">So the whole thread reads as one pane of glass?</Bubble></Message>
<Message><Bubble>Exactly - one backdrop-filter on the frame, tokenized tints inside.</Bubble></Message>
</MessageScroller>
</div>import type { CSSProperties } from 'react'
import { Bubble, Message, MessageScroller } from '@santi020k/lumen-react'
const exampleStyle0: CSSProperties & Record<`--${string}`, string | number> = { "--ui-list-height": "13rem" }
export const Example = () => (
<>
<div className="docs-glass-demo">
<MessageScroller glass style={exampleStyle0}>
<Message><Bubble>The scroller frame is frosted; bubbles inside go translucent too.</Bubble></Message>
<Message from="user"><Bubble from="user">So the whole thread reads as one pane of glass?</Bubble></Message>
<Message><Bubble>Exactly - one backdrop-filter on the frame, tokenized tints inside.</Bubble></Message>
</MessageScroller>
</div>
</>
)<script type="module">
import { defineLumenElements } from '@santi020k/lumen-elements/define'
defineLumenElements()
</script>
<div class="docs-glass-demo">
<lumen-message-scroller glass style="--ui-list-height: 13rem;">
<lumen-message><lumen-bubble>The scroller frame is frosted; bubbles inside go translucent too.</lumen-bubble></lumen-message>
<lumen-message from="user"><lumen-bubble from="user">So the whole thread reads as one pane of glass?</lumen-bubble></lumen-message>
<lumen-message><lumen-bubble>Exactly - one backdrop-filter on the frame, tokenized tints inside.</lumen-bubble></lumen-message>
</lumen-message-scroller>
</div>API reference
Lumen-specific props and runtime attributes for the Astro primitive. Use the framework differences above and the copyable examples for React composition and Elements attributes; the public adapter types define their supported contracts.
| Attribute | Values | Default | Description |
|---|---|---|---|
| glass | boolean | "subtle" | "strong" | false | Applies the tokenized liquid-glass surface treatment with backdrop-filter fallbacks; "subtle" and "strong" adjust the fill intensity. |
| autoScroll / auto-scroll | boolean | false | Follows new messages only while the reader is at the end; keyed data-ui-message-item rows preserve position on prepend. |
| scrollThreshold / scroll-threshold | number | 32 | Distance in pixels considered near the end. |
| children | Message elements or activity rows | required | Provides the ordered feed inside the scrollable region. |
| class, className | string | "" | Merges custom classes with the generated ui-* root classes. |
| ...native attributes | HTML attributes | - | Forwards standard attributes to the root element unless the component consumes them. |