| 1 | /**
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| 2 | * @license
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| 3 | * Copyright Google LLC All Rights Reserved.
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| 4 | *
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| 5 | * Use of this source code is governed by an MIT-style license that can be
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| 6 | * found in the LICENSE file at https://angular.io/license
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| 7 | */
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| 8 | import { Directive, InjectionToken, Input } from '@angular/core';
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| 9 | let nextUniqueId = 0;
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| 10 | /**
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| 11 | * Injection token that can be used to reference instances of `MatHint`. It serves as
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| 12 | * alternative token to the actual `MatHint` class which could cause unnecessary
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| 13 | * retention of the class and its directive metadata.
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| 14 | *
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| 15 | * *Note*: This is not part of the public API as the MDC-based form-field will not
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| 16 | * need a lightweight token for `MatHint` and we want to reduce breaking changes.
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| 17 | */
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| 18 | export const _MAT_HINT = new InjectionToken('MatHint');
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| 19 | /** Hint text to be shown underneath the form field control. */
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| 20 | export class MatHint {
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| 21 | constructor() {
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| 22 | /** Whether to align the hint label at the start or end of the line. */
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| 23 | this.align = 'start';
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| 24 | /** Unique ID for the hint. Used for the aria-describedby on the form field control. */
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| 25 | this.id = `mat-hint-${nextUniqueId++}`;
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| 26 | }
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| 27 | }
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| 28 | MatHint.decorators = [
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| 29 | { type: Directive, args: [{
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| 30 | selector: 'mat-hint',
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| 31 | host: {
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| 32 | 'class': 'mat-hint',
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| 33 | '[class.mat-form-field-hint-end]': 'align === "end"',
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| 34 | '[attr.id]': 'id',
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| 35 | // Remove align attribute to prevent it from interfering with layout.
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| 36 | '[attr.align]': 'null',
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| 37 | },
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| 38 | providers: [{ provide: _MAT_HINT, useExisting: MatHint }],
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| 39 | },] }
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| 40 | ];
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| 41 | MatHint.propDecorators = {
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| 42 | align: [{ type: Input }],
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| 43 | id: [{ type: Input }]
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| 44 | };
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| 45 | //# sourceMappingURL=data:application/json;base64,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 |
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