/**
 * @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, InjectionToken, Input } from '@angular/core';
import * as i0 from "@angular/core";
let nextUniqueId = 0;
/**
 * Injection token that can be used to reference instances of `MatHint`. It serves as
 * alternative token to the actual `MatHint` class which could cause unnecessary
 * retention of the class and its directive metadata.
 *
 * *Note*: This is not part of the public API as the MDC-based form-field will not
 * need a lightweight token for `MatHint` and we want to reduce breaking changes.
 *
 * @deprecated Use `_MAT_HINT` from `@angular/material/form-field` instead. See https://material.angular.io/guide/mdc-migration for information about migrating.
 * @breaking-change 17.0.0
 */
export const _MAT_LEGACY_HINT = new InjectionToken('MatHint');
/**
 * Hint text to be shown underneath the form field control.
 * @deprecated Use `MatHint` 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 MatLegacyHint {
    constructor() {
        /** Whether to align the hint label at the start or end of the line. */
        this.align = 'start';
        /** Unique ID for the hint. Used for the aria-describedby on the form field control. */
        this.id = `mat-hint-${nextUniqueId++}`;
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatLegacyHint, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: MatLegacyHint, selector: "mat-hint", inputs: { align: "align", id: "id" }, host: { properties: { "class.mat-form-field-hint-end": "align === \"end\"", "attr.id": "id", "attr.align": "null" }, classAttribute: "mat-hint" }, providers: [{ provide: _MAT_LEGACY_HINT, useExisting: MatLegacyHint }], ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatLegacyHint, decorators: [{
            type: Directive,
            args: [{
                    selector: 'mat-hint',
                    host: {
                        'class': 'mat-hint',
                        '[class.mat-form-field-hint-end]': 'align === "end"',
                        '[attr.id]': 'id',
                        // Remove align attribute to prevent it from interfering with layout.
                        '[attr.align]': 'null',
                    },
                    providers: [{ provide: _MAT_LEGACY_HINT, useExisting: MatLegacyHint }],
                }]
        }], propDecorators: { align: [{
                type: Input
            }], id: [{
                type: Input
            }] } });
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