Lily Design System™ — Vue PickerBar

Link picker (0.3.0). Pass links (and labels.link) to add a link-picker — a home icon opening the page links your app defines — as the leftmost icon. It renders only when both are given.

A single page-header row that composes five of the Lily *-picker helpers — search, theme, locale, text size, and share — with two catalog-wide defaults pre-wired, so you can drop one component into a header instead of assembling and configuring five. Search comes first in the row.

motion-picker and date-time-picker are not part of the bar: motion has no natural spot next to the other three header preferences, and date-time-picker is a form control, not a header control.

Install

npm install @lilydesignsystem/vue-picker-bar

@lilydesignsystem/vue-search-picker, -theme-picker, -locale-picker, -text-size-picker, and -share-picker install automatically as regular dependencies — PickerBar is a thin wrapper around them, not a reimplementation.

Usage

<script setup lang="ts">
import PickerBar from "@lilydesignsystem/vue-picker-bar";
</script>

<template>
  <PickerBar
    :labels="{
      search: 'Search this site',
      searchInput: 'Search terms',
      searchSubmit: 'Search',
      theme: 'Theme',
      locale: 'Language',
      textSize: 'Text size',
      share: 'Share',
    }"
    themesUrl="/assets/themes/"
    :locales="['en', 'cy', 'gd', 'ga']"
    :shareTargets="[
      {
        id: 'email',
        label: 'Email',
        href: (url, title) => `mailto:?subject=${title}&body=${url}`,
      },
    ]"
  />
</template>

That's a complete, working header row: site search (a search for foo goes to /?foo), 45 themes, four locales, the seven-step text-size scale, and one share destination plus copy-to-URL if you add :shareProps="{ copyLabel: 'Copy link' }".

Defaults

• themes defaults to DEFAULT_THEMES — all 45 Lily reference theme slugs, alphabetical, with the 8 United Kingdom / United States government themes moved to their own alphabetical group at the bottom. Pass your own themes array to override.
• sizes defaults to DEFAULT_SIZES — the seven-step scale largest, larger, large, normal, small, smaller, smallest — and the text-size picker starts on normal. Pass your own sizes array (and :textSizeProps="{ defaultValue: '…' }" if you want a different starting point) to override.

Both are exported as named constants:

import { DEFAULT_THEMES, DEFAULT_SIZES } from "@lilydesignsystem/vue-picker-bar";

Passing extra props to one picker

Each wrapped picker takes a *Props bag for anything beyond what PickerBar lifts to the top level — a search action or client-side navigate, persistence, initial value, detection, a *Labels override map:

<PickerBar
  :labels="{
    search: 'Search this site', searchInput: 'Search terms', searchSubmit: 'Search',
    theme: 'Theme', locale: 'Language', textSize: 'Text size', share: 'Share',
  }"
  themesUrl="/assets/themes/"
  :locales="['en', 'cy']"
  :searchProps="{ action: '/search', placeholder: 'Search…' }"
  :themeProps="{ storageKey: 'lily-theme', detectFromSystem: true }"
  :localeProps="{ storageKey: 'lily-locale', detectFromNavigator: true }"
  :textSizeProps="{ storageKey: 'lily-text-size' }"
  :shareProps="{ copyLabel: 'Copy link', copiedLabel: 'Copied' }"
/>

Anything in a *Props bag wins over PickerBar's own default for that picker — including overriding themes, locales, or sizes per-picker if you ever needed to (you'd normally just use the top-level prop instead).

Listening for changes

PickerBar re-emits each wrapped picker's own event under a bar-scoped name, so you don't need a ref per picker:

<PickerBar
  ...
  @search="(query, href) => console.log('searching for', query, 'at', href)"
  @theme-change="(theme) => console.log('theme is now', theme)"
  @locale-change="(locale) => console.log('locale is now', locale)"
  @text-size-change="(size) => console.log('text size is now', size)"
  @share="(targetId, url) => console.log('shared to', targetId, url)"
  @copy="(url) => console.log('copied', url)"
  @native-share="(url) => console.log('used the native share sheet for', url)"
/>

Styling

PickerBar renders no CSS of its own class beyond the picker-bar root wrapper — style each child through its own package's class hooks (search-picker, theme-picker, locale-picker, text-size-picker, share-picker; see each package's own index.md). A typical header layout:

.picker-bar {
  display: flex;
  gap: var(--theme-space-sm, 0.5rem);
  align-items: center;
}

Accessibility

Every accessible name comes from labels — seven of them, three for search (its button and search landmark, its field, its ⏎ submit button) and one for each other picker. There is no English default, because a set of names this catalog invented is exactly the case the rest of Lily's i18n rule exists for. Each wrapped picker keeps its own WAI-ARIA APG contract unchanged; see that picker's own index.md.

Full contract

See spec/index.md.

Lily™ and Lily Design System™ are trademarks.