/**
 * @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';
export const MAT_SLIDE_TOGGLE_REQUIRED_VALIDATOR = {
    provide: NG_VALIDATORS,
    useExisting: forwardRef(() => MatSlideToggleRequiredValidator),
    multi: true
};
/**
 * Validator for Material slide-toggle components with the required attribute in a
 * template-driven form. The default validator for required form controls asserts
 * that the control value is not undefined but that is not appropriate for a slide-toggle
 * where the value is always defined.
 *
 * Required slide-toggle form controls are valid when checked.
 */
export class MatSlideToggleRequiredValidator extends CheckboxRequiredValidator {
}
MatSlideToggleRequiredValidator.decorators = [
    { type: Directive, args: [{
                selector: `mat-slide-toggle[required][formControlName],
             mat-slide-toggle[required][formControl], mat-slide-toggle[required][ngModel]`,
                providers: [MAT_SLIDE_TOGGLE_REQUIRED_VALIDATOR],
            },] }
];
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