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Angular - commonly needed directives and services
/**
* @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.dev/license
*/
import { Attribute, Directive, Host, Input, TemplateRef, ViewContainerRef } from '@angular/core';
import { getPluralCategory, NgLocalization } from '../i18n/localization';
import { SwitchView } from './ng_switch';
import * as i0 from "@angular/core";
import * as i1 from "../i18n/localization";
/**
* @ngModule CommonModule
*
* @usageNotes
* ```
*
* there is nothing
* there is one
* there are a few
*
* ```
*
* @description
*
* Adds / removes DOM sub-trees based on a numeric value. Tailored for pluralization.
*
* Displays DOM sub-trees that match the switch expression value, or failing that, DOM sub-trees
* that match the switch expression's pluralization category.
*
* To use this directive you must provide a container element that sets the `[ngPlural]` attribute
* to a switch expression. Inner elements with a `[ngPluralCase]` will display based on their
* expression:
* - if `[ngPluralCase]` is set to a value starting with `=`, it will only display if the value
* matches the switch expression exactly,
* - otherwise, the view will be treated as a "category match", and will only display if exact
* value matches aren't found and the value maps to its category for the defined locale.
*
* See http://cldr.unicode.org/index/cldr-spec/plural-rules
*
* @publicApi
*/
export class NgPlural {
constructor(_localization) {
this._localization = _localization;
this._caseViews = {};
}
set ngPlural(value) {
this._updateView(value);
}
addCase(value, switchView) {
this._caseViews[value] = switchView;
}
_updateView(switchValue) {
this._clearViews();
const cases = Object.keys(this._caseViews);
const key = getPluralCategory(switchValue, cases, this._localization);
this._activateView(this._caseViews[key]);
}
_clearViews() {
if (this._activeView)
this._activeView.destroy();
}
_activateView(view) {
if (view) {
this._activeView = view;
this._activeView.create();
}
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.6", ngImport: i0, type: NgPlural, deps: [{ token: i1.NgLocalization }], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "18.2.6", type: NgPlural, isStandalone: true, selector: "[ngPlural]", inputs: { ngPlural: "ngPlural" }, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.6", ngImport: i0, type: NgPlural, decorators: [{
type: Directive,
args: [{
selector: '[ngPlural]',
standalone: true,
}]
}], ctorParameters: () => [{ type: i1.NgLocalization }], propDecorators: { ngPlural: [{
type: Input
}] } });
/**
* @ngModule CommonModule
*
* @description
*
* Creates a view that will be added/removed from the parent {@link NgPlural} when the
* given expression matches the plural expression according to CLDR rules.
*
* @usageNotes
* ```
*
* ...
* ...
*
*```
*
* See {@link NgPlural} for more details and example.
*
* @publicApi
*/
export class NgPluralCase {
constructor(value, template, viewContainer, ngPlural) {
this.value = value;
const isANumber = !isNaN(Number(value));
ngPlural.addCase(isANumber ? `=${value}` : value, new SwitchView(viewContainer, template));
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.6", ngImport: i0, type: NgPluralCase, deps: [{ token: 'ngPluralCase', attribute: true }, { token: i0.TemplateRef }, { token: i0.ViewContainerRef }, { token: NgPlural, host: true }], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "18.2.6", type: NgPluralCase, isStandalone: true, selector: "[ngPluralCase]", ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.6", ngImport: i0, type: NgPluralCase, decorators: [{
type: Directive,
args: [{
selector: '[ngPluralCase]',
standalone: true,
}]
}], ctorParameters: () => [{ type: undefined, decorators: [{
type: Attribute,
args: ['ngPluralCase']
}] }, { type: i0.TemplateRef }, { type: i0.ViewContainerRef }, { type: NgPlural, decorators: [{
type: Host
}] }] });
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