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appearance-picker

v0.0.2

Published

<appearance-picker> custom element for tri-state (system/light/dark) appearance switching

Vulnerabilities

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Links

Git

Maintainers

mighdollmighdoll

Keywords

color-schemecustom-elementdark-modethemetheme-switchertheme-toggleweb-component

Readme

appearance-picker

A standalone custom element <appearance-picker> for tri-state (system / light / dark) appearance switching.

<script type="module">
  import "appearance-picker";
</script>

<appearance-picker></appearance-picker>

Behavior

  • system — neither button active; resolves via prefers-color-scheme
  • light — sun active, forced light
  • dark — moon active, forced dark
  • Clicking the active button reverts to system

Side effects on change:

  • Sets data-theme="light|dark" on <html> (removed in system mode)
  • Persists preference to localStorage["appearance"]
  • Dispatches appearance-change

Attributes

| attr | values | default | reflects | | ------------ | ----------------------------------- | -------------- | -------- | | appearance | system / light / dark | system | yes | | storage | localStorage / cookie / none | localStorage | no |

Events

appearance-change — fires on user click, on OS scheme change while in system mode, and once on connect.

e.detail; // { preference: "system" | "light" | "dark",
          //   resolved:   "light"  | "dark" }

Styling

Shadow DOM. Customize via CSS custom properties on the host:

| property | default | | --------------------------------- | -------------- | | --appearance-picker-color | currentColor | | --appearance-picker-active-color| currentColor | | --appearance-picker-active-bg | transparent | | --appearance-picker-size | 16px | | --appearance-picker-gap | 2px |

Exports

  • appearance-picker — registers the custom element (side-effect import)
  • appearance-picker/element — AppearancePicker class only, no register