kopia lustrzana https://github.com/shoelace-style/shoelace
85 wiersze
2.7 KiB
TypeScript
85 wiersze
2.7 KiB
TypeScript
import { html, LitElement } from 'lit';
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import { customElement, property, query, state } from 'lit/decorators.js';
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import { LocalizeController } from '~/utilities/localize';
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import styles from './progress-ring.styles';
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/**
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* @since 2.0
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* @status stable
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*
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* @slot - A label to show inside the ring.
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*
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* @csspart base - The component's internal wrapper.
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* @csspart label - The progress ring label.
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*
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* @cssproperty --size - The diameter of the progress ring (cannot be a percentage).
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* @cssproperty --track-width - The width of the track.
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* @cssproperty --track-color - The color of the track.
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* @cssproperty --indicator-color - The indicator color.
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*/
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@customElement('sl-progress-ring')
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export default class SlProgressRing extends LitElement {
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static styles = styles;
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private readonly localize = new LocalizeController(this);
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@query('.progress-ring__indicator') indicator: SVGCircleElement;
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@state() indicatorOffset: string;
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/** The current progress, 0 to 100. */
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@property({ type: Number, reflect: true }) value = 0;
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/** A custom label for the progress ring's aria label. */
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@property() label = '';
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/** The locale to render the component in. */
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@property() lang: string;
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updated(changedProps: Map<string, unknown>) {
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super.updated(changedProps);
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//
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// This block is only required for Safari because it doesn't transition the circle when the custom properties
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// change, possibly because of a mix of pixel + unit-less values in the calc() function. It seems like a Safari bug,
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// but I couldn't pinpoint it so this works around the problem.
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//
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if (changedProps.has('percentage')) {
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const radius = parseFloat(getComputedStyle(this.indicator).getPropertyValue('r'));
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const circumference = 2 * Math.PI * radius;
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const offset = circumference - (this.value / 100) * circumference;
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this.indicatorOffset = `${offset}px`;
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}
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}
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render() {
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return html`
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<div
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part="base"
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class="progress-ring"
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role="progressbar"
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aria-label=${this.label.length > 0 ? this.label : this.localize.term('progress')}
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aria-valuemin="0"
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aria-valuemax="100"
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aria-valuenow="${this.value}"
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style="--percentage: ${this.value / 100}"
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>
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<svg class="progress-ring__image">
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<circle class="progress-ring__track"></circle>
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<circle class="progress-ring__indicator" style="stroke-dashoffset: ${this.indicatorOffset}"></circle>
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</svg>
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<span part="label" class="progress-ring__label">
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<slot></slot>
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</span>
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</div>
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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-progress-ring': SlProgressRing;
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}
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}
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