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ToastViewport
Configures where transient toast notifications are announced and stacked.
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 ToastViewport 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 {
Toast,
ToastViewport
} from '@santi020k/lumen-astro'
---
<div style="min-height: 12rem; position: relative;">
<ToastViewport
aria-label="Example notifications"
maxCount={2}
placement="top-right"
style="position: absolute;"
>
<Toast variant="success">
<strong>Changes saved</strong>
<p>The explicit viewport keeps this notification in the top-right stack.</p>
</Toast>
<Toast>
<strong>Preview ready</strong>
<p>At most two notifications are shown in this example.</p>
</Toast>
</ToastViewport>
</div>import {
Toast,
ToastViewport
} from '@santi020k/lumen-react'
export const Example = () => (
<>
<div style={{ "minHeight": "12rem", "position": "relative" }}>
<ToastViewport
aria-label="Example notifications"
maxCount={2}
placement="top-right"
style={{ "position": "absolute" }}
>
<Toast variant="success">
<strong>Changes saved</strong>
<p>The explicit viewport keeps this notification in the top-right stack.</p>
</Toast>
<Toast>
<strong>Preview ready</strong>
<p>At most two notifications are shown in this example.</p>
</Toast>
</ToastViewport>
</div>
</>
)<script type="module">
import { defineLumenElements } from '@santi020k/lumen-elements/define'
defineLumenElements()
</script>
<div style="min-height: 12rem; position: relative;">
<lumen-toast-viewport
aria-label="Example notifications"
max-count="2"
placement="top-right"
style="position: absolute;">
<lumen-toast variant="success">
<strong>Changes saved</strong>
<p>The explicit viewport keeps this notification in the top-right stack.</p>
</lumen-toast>
<lumen-toast>
<strong>Preview ready</strong>
<p>At most two notifications are shown in this example.</p>
</lumen-toast>
</lumen-toast-viewport>
</div>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 ToastViewportlumen add ToastViewportpnpm add @santi020k/lumen-reactpnpm add @santi020k/lumen-reactlumen add ToastViewport --target reactlumen add ToastViewport --target reactpnpm add @santi020k/lumen-elementspnpm add @santi020k/lumen-elementslumen add ToastViewport --target elementslumen add ToastViewport --target elementsAPI 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 |
|---|---|---|---|
| placement | "bottom-center" | "bottom-left" | "bottom-right" | "top-center" | "top-left" | "top-right" | "bottom-right" | Positions the notification viewport. |
| maxCount | number | 3 | Limits the number of simultaneously visible runtime toasts. |
| 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. |