41 lines
1.6 KiB
JavaScript
41 lines
1.6 KiB
JavaScript
window.customElements.define('gitea-absolute-date', class extends HTMLElement {
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static observedAttributes = ['date', 'year', 'month', 'weekday', 'day'];
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update = () => {
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const year = this.getAttribute('year') ?? '';
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const month = this.getAttribute('month') ?? '';
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const weekday = this.getAttribute('weekday') ?? '';
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const day = this.getAttribute('day') ?? '';
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const lang = this.closest('[lang]')?.getAttribute('lang') ||
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this.ownerDocument.documentElement.getAttribute('lang') ||
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'';
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// only extract the `yyyy-mm-dd` part. When converting to Date, it will become midnight UTC and when rendered
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// as localized date, will have a offset towards UTC, which we remove to shift the timestamp to midnight in the
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// localized date. We should eventually use `Temporal.PlainDate` which will make the correction unnecessary.
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// - https://stackoverflow.com/a/14569783/808699
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// - https://tc39.es/proposal-temporal/docs/plaindate.html
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const date = new Date(this.getAttribute('date').substring(0, 10));
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const correctedDate = new Date(date.getTime() - date.getTimezoneOffset() * -60000);
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if (!this.shadowRoot) this.attachShadow({mode: 'open'});
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this.shadowRoot.textContent = correctedDate.toLocaleString(lang ?? [], {
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...(year && {year}),
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...(month && {month}),
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...(weekday && {weekday}),
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...(day && {day}),
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});
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};
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attributeChangedCallback(_name, oldValue, newValue) {
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if (!this.initialized || oldValue === newValue) return;
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this.update();
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}
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connectedCallback() {
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this.initialized = false;
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this.update();
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this.initialized = true;
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}
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});
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