/**
 * @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 { Directive, forwardRef } from '@angular/core';
import { CheckboxRequiredValidator, NG_VALIDATORS } from '@angular/forms';
import * as i0 from "@angular/core";
export const MAT_CHECKBOX_REQUIRED_VALIDATOR = {
    provide: NG_VALIDATORS,
    useExisting: forwardRef(() => MatCheckboxRequiredValidator),
    multi: true,
};
/**
 * Validator for Material checkbox's required attribute in template-driven checkbox.
 * Current CheckboxRequiredValidator only work with `input type=checkbox` and does not
 * work with `mat-checkbox`.
 */
export class MatCheckboxRequiredValidator extends CheckboxRequiredValidator {
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatCheckboxRequiredValidator, deps: null, target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: MatCheckboxRequiredValidator, selector: "mat-checkbox[required][formControlName],\n             mat-checkbox[required][formControl], mat-checkbox[required][ngModel]", providers: [MAT_CHECKBOX_REQUIRED_VALIDATOR], usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatCheckboxRequiredValidator, decorators: [{
            type: Directive,
            args: [{
                    selector: `mat-checkbox[required][formControlName],
             mat-checkbox[required][formControl], mat-checkbox[required][ngModel]`,
                    providers: [MAT_CHECKBOX_REQUIRED_VALIDATOR],
                }]
        }] });
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