@angular/common
Version:
Angular - commonly needed directives and services
55 lines • 5.22 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { Pipe } from '@angular/core';
import { invalidPipeArgumentError } from './invalid_pipe_argument_error';
import * as i0 from "@angular/core";
/**
* @ngModule CommonModule
* @description
*
* Generic selector that displays the string that matches the current value.
*
* If none of the keys of the `mapping` match the `value`, then the content
* of the `other` key is returned when present, otherwise an empty string is returned.
*
* @usageNotes
*
* ### Example
*
* {@example common/pipes/ts/i18n_pipe.ts region='I18nSelectPipeComponent'}
*
* @publicApi
*/
export class I18nSelectPipe {
/**
* @param value a string to be internationalized.
* @param mapping an object that indicates the text that should be displayed
* for different values of the provided `value`.
*/
transform(value, mapping) {
if (value == null)
return '';
if (typeof mapping !== 'object' || typeof value !== 'string') {
throw invalidPipeArgumentError(I18nSelectPipe, mapping);
}
if (mapping.hasOwnProperty(value)) {
return mapping[value];
}
if (mapping.hasOwnProperty('other')) {
return mapping['other'];
}
return '';
}
}
I18nSelectPipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.2.2", ngImport: i0, type: I18nSelectPipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe });
I18nSelectPipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: "12.0.0", version: "13.2.2", ngImport: i0, type: I18nSelectPipe, name: "i18nSelect" });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.2.2", ngImport: i0, type: I18nSelectPipe, decorators: [{
type: Pipe,
args: [{ name: 'i18nSelect', pure: true }]
}] });
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