kopia lustrzana https://github.com/shoelace-style/shoelace
96 wiersze
3.3 KiB
TypeScript
96 wiersze
3.3 KiB
TypeScript
import { html } from 'lit';
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import { property, query, state } from 'lit/decorators.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 styles from './button-group.styles.js';
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import type { CSSResultGroup } from 'lit';
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/**
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* @summary Button groups can be used to group related buttons into sections.
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* @documentation https://shoelace.style/components/button-group
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* @status stable
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* @since 2.0
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*
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* @slot - One or more `<sl-button>` elements to display in the button group.
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*
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* @csspart base - The component's base wrapper.
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*/
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export default class SlButtonGroup extends ShoelaceElement {
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static styles: CSSResultGroup = [componentStyles, styles];
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@query('slot') defaultSlot: HTMLSlotElement;
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@state() disableRole = false;
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/**
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* A label to use for the button group. This won't be displayed on the screen, but it will be announced by assistive
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* devices when interacting with the control and is strongly recommended.
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*/
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@property() label = '';
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private handleFocus(event: Event) {
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const button = findButton(event.target as HTMLElement);
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button?.toggleAttribute('data-sl-button-group__button--focus', true);
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}
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private handleBlur(event: Event) {
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const button = findButton(event.target as HTMLElement);
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button?.toggleAttribute('data-sl-button-group__button--focus', false);
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}
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private handleMouseOver(event: Event) {
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const button = findButton(event.target as HTMLElement);
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button?.toggleAttribute('data-sl-button-group__button--hover', true);
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}
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private handleMouseOut(event: Event) {
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const button = findButton(event.target as HTMLElement);
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button?.toggleAttribute('data-sl-button-group__button--hover', false);
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}
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private handleSlotChange() {
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const slottedElements = [...this.defaultSlot.assignedElements({ flatten: true })] as HTMLElement[];
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slottedElements.forEach(el => {
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const index = slottedElements.indexOf(el);
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const button = findButton(el);
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if (button) {
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button.toggleAttribute('data-sl-button-group__button', true);
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button.toggleAttribute('data-sl-button-group__button--first', index === 0);
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button.toggleAttribute('data-sl-button-group__button--inner', index > 0 && index < slottedElements.length - 1);
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button.toggleAttribute('data-sl-button-group__button--last', index === slottedElements.length - 1);
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button.toggleAttribute(
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'data-sl-button-group__button--radio',
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button.tagName.toLowerCase() === 'sl-radio-button'
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);
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}
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});
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}
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render() {
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// eslint-disable-next-line lit-a11y/mouse-events-have-key-events
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return html`
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<div
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part="base"
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class="button-group"
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role="${this.disableRole ? 'presentation' : 'group'}"
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aria-label=${this.label}
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@focusout=${this.handleBlur}
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@focusin=${this.handleFocus}
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@mouseover=${this.handleMouseOver}
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@mouseout=${this.handleMouseOut}
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>
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<slot @slotchange=${this.handleSlotChange}></slot>
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</div>
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`;
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}
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}
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function findButton(el: HTMLElement) {
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const selector = 'sl-button, sl-radio-button';
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// The button could be the target element or a child of it (e.g. a dropdown or tooltip anchor)
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return el.closest(selector) ?? el.querySelector(selector);
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}
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