J3W1 / DESIGN SYSTEM

Segmented control

A short exclusive choice implemented with labelled native radios.

stable · LIGHT DOM · 1.1.0

Light DOM retains static content, native semantics, label relationships and host composition without duplicating controls.

Standalone example ↗Copy file manifest Canonical JSON Vue gallery ↗Prepare an agent kit →

Live variants

default

View density

CompactComfortable

<j3w1-segmented-control id="example-segmented-control-default"><fieldset class="segmented-control radio-group radio-group-horizontal"><legend class="radio-group-legend">View density</legend><div class="segmented-control-options radio-group-options"><label class="radio-group-option"><span class="radio-group-control"><input class="radio-group-input" type="radio" name="example-segmented-control-default-density" value="compact" checked="" data-demo-focus-target=""><span class="radio-group-dot" aria-hidden="true"></span></span><span class="radio-group-text">Compact</span></label><label class="radio-group-option"><span class="radio-group-control"><input class="radio-group-input" type="radio" name="example-segmented-control-default-density" value="comfortable"><span class="radio-group-dot" aria-hidden="true"></span></span><span class="radio-group-text">Comfortable</span></label></div></fieldset></j3w1-segmented-control>

Install and register

Use the exact version. If npm publication is pending, install the release tarball from the installation guide.

npm install --save-exact @j3w1/ui@1.1.0

import '@j3w1/ui/tokens.css';
import '@j3w1/ui/styles/segmented-control.css';
import '@j3w1/ui/register/segmented-control';

Insert the maintained markup above after loading these imports. Its native children provide accessible names and form behavior; the empty custom tag alone does not create a control.

Vue SFC, React, Astro and plain HTML integration →

Copy the complete implementation

npx --package=@j3w1/ui@1.1.0 j3w1-ui copy segmented-control --out ./vendor/j3w1/segmented-control

The CLI verifies every file before writing and refuses overwrites. Serve the output over HTTP and open index.html. Keep its modules, CSS, tokens and licence notices together.

Public API

attributes

Name	Type / signature	Meaning
`disabled`	`CustomEvent`	Disable the native controls owned by this instance.
`loading`	`CustomEvent`	Mark the primary control busy and prevent duplicate activation.

properties

Name	Type / signature	Meaning
`disabled`	`boolean`	Delegates disabled state to native children.
`name`	`string`	Native control name; application form keys remain explicit.

methods

Name	Type / signature	Meaning
`refresh`	`(): void`	Reconnect behavior after replacing native child structure.
`focus`	`(options?: FocusOptions): void`	Focus the first usable native control.

events

Name	Type / signature	Meaning

Dependencies and verification

Registered components: none. Style dependencies: radio-group.

Package presence establishes an available implementation. Actual passes depend on the tested artifact and environment. Read specification execution evidence; read packed-consumer evidence; inspect the complete state matrix.

Full implementation manifest, API and token dependency closure

Canonical specification

Purpose

Choose one value from a short labelled set using native radios. This changes a value; use tabs for associated content panels. Native names, required checks, disabled fieldsets and form reset are preserved.

Anatomy

fieldset: Legend names the choice.
options: Native radios sharing one name, each with a visible label.

States

State	Presentation	Non-colour channel
default	Named content on the default surface.	Native text and structure.
checked	Selected fill and a check indicator.	Native checked state.
focus-visible	Dashed focus ring.	Native keyboard focus position.
disabled	Disabled semantic foreground, background and border at full opacity.	Native disabled state blocks activation.

Keyboard

Tab / Shift+Tab: Enter the native radio group once and leave it.
Arrow keys / Space: Use native radio selection and wrapping.

Accessibility

Keep native radios and labels. A checked value has both a visible native indicator and its programmatic checked state. Do not hide all radios from assistive technology or put role=tab on the labels.

Portability

Wrap labels and actions without changing source order. Use logical spacing in RTL. Preserve native target sizes at both densities; only bounded data regions may scroll horizontally. Use equivalent native semantics and approved roles; record any unsupported behavior as a mapping deviation. The host owns application data, persistence, permissions and services.

Non-examples

Unlabelled controls, color-only status, drag-only operations, hidden required instructions, stolen focus or an invented service success.