kopia lustrzana https://github.com/shoelace-style/shoelace
125 wiersze
3.7 KiB
TypeScript
125 wiersze
3.7 KiB
TypeScript
import { classMap } from 'lit/directives/class-map.js';
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import { html } from 'lit';
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import { property, state } from 'lit/decorators.js';
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import { watch } from '../../internal/watch.js';
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import componentStyles from '../../styles/component.styles.js';
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import ShoelaceElement from '../../internal/shoelace-element.js';
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import SlIcon from '../icon/icon.component.js';
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import styles from './radio.styles.js';
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import type { CSSResultGroup } from 'lit';
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/**
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* @summary Radios allow the user to select a single option from a group.
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* @documentation https://shoelace.style/components/radio
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* @status stable
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* @since 2.0
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*
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* @dependency sl-icon
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*
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* @slot - The radio's label.
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*
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* @event sl-blur - Emitted when the control loses focus.
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* @event sl-focus - Emitted when the control gains focus.
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*
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* @csspart base - The component's base wrapper.
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* @csspart control - The circular container that wraps the radio's checked state.
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* @csspart control--checked - The radio control when the radio is checked.
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* @csspart checked-icon - The checked icon, an `<sl-icon>` element.
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* @csspart label - The container that wraps the radio's label.
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*/
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export default class SlRadio extends ShoelaceElement {
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static styles: CSSResultGroup = [componentStyles, styles];
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static dependencies = { 'sl-icon': SlIcon };
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@state() checked = false;
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@state() protected hasFocus = false;
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/** The radio's value. When selected, the radio group will receive this value. */
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@property() value: string;
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/**
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* The radio's size. When used inside a radio group, the size will be determined by the radio group's size so this
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* attribute can typically be omitted.
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*/
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@property({ reflect: true }) size: 'small' | 'medium' | 'large' = 'medium';
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/** Disables the radio. */
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@property({ type: Boolean, reflect: true }) disabled = false;
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constructor() {
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super();
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this.addEventListener('blur', this.handleBlur);
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this.addEventListener('click', this.handleClick);
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this.addEventListener('focus', this.handleFocus);
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}
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connectedCallback() {
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super.connectedCallback();
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this.setInitialAttributes();
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}
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private handleBlur = () => {
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this.hasFocus = false;
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this.emit('sl-blur');
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};
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private handleClick = () => {
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if (!this.disabled) {
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this.checked = true;
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}
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};
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private handleFocus = () => {
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this.hasFocus = true;
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this.emit('sl-focus');
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};
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private setInitialAttributes() {
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this.setAttribute('role', 'radio');
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this.setAttribute('tabindex', '-1');
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this.setAttribute('aria-disabled', this.disabled ? 'true' : 'false');
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}
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@watch('checked')
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handleCheckedChange() {
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this.setAttribute('aria-checked', this.checked ? 'true' : 'false');
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this.setAttribute('tabindex', this.checked ? '0' : '-1');
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}
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@watch('disabled', { waitUntilFirstUpdate: true })
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handleDisabledChange() {
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this.setAttribute('aria-disabled', this.disabled ? 'true' : 'false');
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}
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render() {
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return html`
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<span
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part="base"
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class=${classMap({
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radio: true,
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'radio--checked': this.checked,
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'radio--disabled': this.disabled,
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'radio--focused': this.hasFocus,
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'radio--small': this.size === 'small',
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'radio--medium': this.size === 'medium',
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'radio--large': this.size === 'large'
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})}
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>
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<span part="${`control${this.checked ? ' control--checked' : ''}`}" class="radio__control">
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${this.checked
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? html` <sl-icon part="checked-icon" class="radio__checked-icon" library="system" name="radio"></sl-icon> `
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: ''}
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</span>
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<slot part="label" class="radio__label"></slot>
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</span>
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`;
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}
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}
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declare global {
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interface HTMLElementTagNameMap {
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'sl-radio': SlRadio;
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}
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}
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