Hybras
42 lines
1.2 KiB
TypeScript
42 lines
1.2 KiB
TypeScript
import { Pipe, PipeTransform } from '@angular/core';
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import {formatNumber} from '@angular/common';
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@Pipe({
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name: 'temperature'
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})
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export class TemperaturePipe implements PipeTransform {
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static celsiusToFahrenheit(celsiusTemp: number): number {
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return celsiusTemp * 9/5 + 32;
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}
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static formatTemperature(temp: number, unit: string, includeUnits: boolean): number|string {
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let unitSuffix
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switch (unit) {
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case 'celsius':
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unitSuffix = '°C'
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break
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case 'fahrenheit':
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unitSuffix = '°F'
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break
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}
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if(includeUnits){
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return formatNumber(temp, 'en-US') + unitSuffix
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} else {
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return formatNumber(temp, 'en-US',)
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}
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}
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transform(celsiusTemp: number, unit = 'celsius', includeUnits = false): number|string {
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let temperature;
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switch (unit) {
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case 'celsius':
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temperature = celsiusTemp;
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break
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case 'fahrenheit':
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temperature = TemperaturePipe.celsiusToFahrenheit(celsiusTemp)
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break
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}
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return TemperaturePipe.formatTemperature(temperature, unit, includeUnits)
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}
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}
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