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Message scroller

A scrolling list of messages that keeps the newest in view.

Left out of Multi-brand Multi-brand draws on core, content and media families, not conversation. It admits only families in its roles. Its only messages go to support through a textarea. Use instead: Textarea

See it live​

Start Storybook to see it live: npm run storybook
Live from StorybookOpen Message scroller in StorybookSee it in dark

When to use it​

  • Use it when: A live conversation where new messages arrive at the bottom.
  • Not when: A static list (a scroll area).

Instead:

Words​

  • Shared structure: object, state, next step.
  • Brand tone lives in headlines and marketing copy, not in errors.
  • Errors and confirmations read the same in every brand.
  • Use: Get started, Plan, Order. Avoid: Brand-specific words in errors, Jargon.

The labels components use, from the voice tokens:

  • content.action.commit: Save
  • content.action.cancel: Cancel
  • content.action.destroy: Remove
  • content.action.retry: Try again
  • content.action.empty-action: Get started

See Voice and tone for the whole voice.

Accessibility and keyboard​

Test before you ship:

  • New messages are announced politely without moving focus. undefined

Use it in code​

npx open-ds add message-scroller

The component reads only component keys and semantic tokens, so it follows the brand and mode on <html>.

Tokens it reads​

Message scroller reads 5 tokens of its own, each an alias of a semantic token. Each row is one part: its own token, the semantic it aliases, and the value it ends at. Change a semantic and every component that reads it follows; override one of Message scroller's tokens to change Message scroller alone.

Changes with theme

Multi-brand decides what changes when you switch theme. Here a switch changes colors, type and shape, so the marked rows differ between its brands and between light and dark; everything else holds steady.

PartIts token and the semantic it aliasesValue
Message scroller
Gapcomponent.message-scroller.gapspace.gap.groupvar(--message-scroller-gap)space.24:1.5rem
Corner
Changes with theme		component.message-scroller.radiusradius.controlvar(--message-scroller-radius)Aster Lightradius.4:0.25remAster Darkradius.4:0.25remBirch Lightradius.12:0.75remBirch Darkradius.12:0.75remCoral Lightradius.999:9999pxCoral Darkradius.999:9999px
Focus
on focus		component.message-scroller.focusborder-width.focusvar(--message-scroller-focus)border-width.2:2px
Focus ring focus
Changes with theme
on focus		component.message-scroller.focus-ring-focuscolor.border.focusvar(--message-scroller-focus-ring-focus)Aster Lightteal.light.600:#0F766EAster Darkteal.dark.600:#7FCFC6Birch Lightpurple.light.600:#6D28D9Birch Darkpurple.dark.600:#B79DF7Coral Lightorange.light.600:#C2410CCoral Darkorange.dark.600:#F7A67F
Focus ring offset focus
Changes with theme
on focus		component.message-scroller.focus-ring-offset-focuscolor.surface.canvasvar(--message-scroller-focus-ring-offset-focus)Aster Lightslate-deep.light.50:#F8FAFCAster Darkslate-deep.dark.0:#020617Birch Lightslate-deep.light.50:#F8FAFCBirch Darkslate-deep.dark.0:#020617Coral Lightslate-deep.light.50:#F8FAFCCoral Darkslate-deep.dark.0:#020617