@primer/view-components
Version:
ViewComponents for the Primer Design System
61 lines (60 loc) • 2.58 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
import { controller, target } from '@github/catalyst';
/**
* A companion Catalyst element for the Details view component. This element
* ensures the <details> and <summary> elements markup is properly accessible by
* updating the aria-label and aria-expanded attributes on click.
*
* aria-label values default to "Expand" and "Collapse". To override those
* values, use the `data-aria-label-open` and `data-aria-label-closed`
* attributes on the summary target.
*
* @example
* ```html
* <details-toggle>
* <details open=true data-target="details-toggle.detailsTarget">
* <summary
* aria-expanded="true"
* aria-label="Collapse me"
* data-target="details-toggle.summaryTarget"
* data-action="click:details-toggle#toggle"
* data-aria-label-closed="Expand me"
* data-aria-label-open="Collapse me"
* >
* Click me
* </summary>
* <div>Contents</div>
* </details>
* </details-toggle>
* ```
*/
let DetailsToggleElement = class DetailsToggleElement extends HTMLElement {
toggle() {
const detailsIsOpen = this.detailsTarget.hasAttribute('open');
if (detailsIsOpen) {
const ariaLabelClosed = this.summaryTarget.getAttribute('data-aria-label-closed') || 'Expand';
this.summaryTarget.setAttribute('aria-label', ariaLabelClosed);
this.summaryTarget.setAttribute('aria-expanded', 'false');
}
else {
const ariaLabelOpen = this.summaryTarget.getAttribute('data-aria-label-open') || 'Collapse';
this.summaryTarget.setAttribute('aria-label', ariaLabelOpen);
this.summaryTarget.setAttribute('aria-expanded', 'true');
}
}
};
__decorate([
target
], DetailsToggleElement.prototype, "detailsTarget", void 0);
__decorate([
target
], DetailsToggleElement.prototype, "summaryTarget", void 0);
DetailsToggleElement = __decorate([
controller
], DetailsToggleElement);
window.DetailsToggleElement = DetailsToggleElement;