/**
 * @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 { 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
 * ```
 * <some-element [ngPlural]="value">
 *   <ng-template ngPluralCase="=0">there is nothing</ng-template>
 *   <ng-template ngPluralCase="=1">there is one</ng-template>
 *   <ng-template ngPluralCase="few">there are a few</ng-template>
 * </some-element>
 * ```
 *
 * @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._switchValue = value;
        this._updateView();
    }
    addCase(value, switchView) {
        this._caseViews[value] = switchView;
    }
    _updateView() {
        this._clearViews();
        const cases = Object.keys(this._caseViews);
        const key = getPluralCategory(this._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();
        }
    }
}
NgPlural.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: NgPlural, deps: [{ token: i1.NgLocalization }], target: i0.ɵɵFactoryTarget.Directive });
NgPlural.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "14.3.0", type: NgPlural, isStandalone: true, selector: "[ngPlural]", inputs: { ngPlural: "ngPlural" }, ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: NgPlural, decorators: [{
            type: Directive,
            args: [{
                    selector: '[ngPlural]',
                    standalone: true,
                }]
        }], ctorParameters: function () { return [{ 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
 * ```
 * <some-element [ngPlural]="value">
 *   <ng-template ngPluralCase="=0">...</ng-template>
 *   <ng-template ngPluralCase="other">...</ng-template>
 * </some-element>
 *```
 *
 * 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));
    }
}
NgPluralCase.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: NgPluralCase, deps: [{ token: 'ngPluralCase', attribute: true }, { token: i0.TemplateRef }, { token: i0.ViewContainerRef }, { token: NgPlural, host: true }], target: i0.ɵɵFactoryTarget.Directive });
NgPluralCase.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "14.3.0", type: NgPluralCase, isStandalone: true, selector: "[ngPluralCase]", ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: NgPluralCase, decorators: [{
            type: Directive,
            args: [{
                    selector: '[ngPluralCase]',
                    standalone: true,
                }]
        }], ctorParameters: function () { return [{ type: undefined, decorators: [{
                    type: Attribute,
                    args: ['ngPluralCase']
                }] }, { type: i0.TemplateRef }, { type: i0.ViewContainerRef }, { type: NgPlural, decorators: [{
                    type: Host
                }] }]; } });
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