/**
 * @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, ElementRef, Input } from '@angular/core';
import { MAT_ERROR } from '@angular/material/form-field';
import * as i0 from "@angular/core";
let nextUniqueId = 0;
/**
 * Single error message to be shown underneath the form field.
 * @deprecated Use `MatError` from `@angular/material/form-field` instead. See https://material.angular.io/guide/mdc-migration for information about migrating.
 * @breaking-change 17.0.0
 */
export class MatLegacyError {
    constructor(ariaLive, elementRef) {
        this.id = `mat-error-${nextUniqueId++}`;
        // If no aria-live value is set add 'polite' as a default. This is preferred over setting
        // role='alert' so that screen readers do not interrupt the current task to read this aloud.
        if (!ariaLive) {
            elementRef.nativeElement.setAttribute('aria-live', 'polite');
        }
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatLegacyError, deps: [{ token: 'aria-live', attribute: true }, { token: i0.ElementRef }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: MatLegacyError, selector: "mat-error", inputs: { id: "id" }, host: { attributes: { "aria-atomic": "true" }, properties: { "attr.id": "id" }, classAttribute: "mat-error" }, providers: [{ provide: MAT_ERROR, useExisting: MatLegacyError }], ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatLegacyError, decorators: [{
            type: Directive,
            args: [{
                    selector: 'mat-error',
                    host: {
                        'class': 'mat-error',
                        '[attr.id]': 'id',
                        'aria-atomic': 'true',
                    },
                    providers: [{ provide: MAT_ERROR, useExisting: MatLegacyError }],
                }]
        }], ctorParameters: function () { return [{ type: undefined, decorators: [{
                    type: Attribute,
                    args: ['aria-live']
                }] }, { type: i0.ElementRef }]; }, propDecorators: { id: [{
                type: Input
            }] } });
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