kopia lustrzana https://github.com/shoelace-style/shoelace
51 wiersze
1.5 KiB
TypeScript
51 wiersze
1.5 KiB
TypeScript
import { LitElement } from 'lit';
|
|
import { customElement, property } from 'lit/decorators.js';
|
|
import { LocalizeController } from '~/utilities/localize';
|
|
|
|
/**
|
|
|
|
* @since 2.0
|
|
* @status stable
|
|
*/
|
|
@customElement('sl-format-bytes')
|
|
export default class SlFormatBytes extends LitElement {
|
|
private readonly localize = new LocalizeController(this);
|
|
|
|
/** The number to format in bytes. */
|
|
@property({ type: Number }) value = 0;
|
|
|
|
/** The unit to display. */
|
|
@property() unit: 'byte' | 'bit' = 'byte';
|
|
|
|
/** Determines how to display the result, e.g. "100 bytes", "100 b", or "100b". */
|
|
@property() display: 'long' | 'short' | 'narrow' = 'short';
|
|
|
|
/** The locale to use when formatting the number. */
|
|
@property() lang: string;
|
|
|
|
render() {
|
|
if (isNaN(this.value)) {
|
|
return '';
|
|
}
|
|
|
|
const bitPrefixes = ['', 'kilo', 'mega', 'giga', 'tera']; // petabit isn't a supported unit
|
|
const bytePrefixes = ['', 'kilo', 'mega', 'giga', 'tera', 'peta'];
|
|
const prefix = this.unit === 'bit' ? bitPrefixes : bytePrefixes;
|
|
const index = Math.max(0, Math.min(Math.floor(Math.log10(this.value) / 3), prefix.length - 1));
|
|
const unit = prefix[index] + this.unit;
|
|
const valueToFormat = parseFloat((this.value / Math.pow(1000, index)).toPrecision(3));
|
|
|
|
return this.localize.number(valueToFormat, {
|
|
style: 'unit',
|
|
unit,
|
|
unitDisplay: this.display
|
|
});
|
|
}
|
|
}
|
|
|
|
declare global {
|
|
interface HTMLElementTagNameMap {
|
|
'sl-format-bytes': SlFormatBytes;
|
|
}
|
|
}
|