| 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 { Attribute, Directive, ElementRef, 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 `MatError`. It serves as
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| 12 | * alternative token to the actual `MatError` 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 | export const MAT_ERROR = new InjectionToken('MatError');
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| 16 | /** Single error message to be shown underneath the form field. */
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| 17 | export class MatError {
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| 18 | constructor(ariaLive, elementRef) {
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| 19 | this.id = `mat-error-${nextUniqueId++}`;
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| 20 | // If no aria-live value is set add 'polite' as a default. This is preferred over setting
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| 21 | // role='alert' so that screen readers do not interrupt the current task to read this aloud.
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| 22 | if (!ariaLive) {
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| 23 | elementRef.nativeElement.setAttribute('aria-live', 'polite');
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| 24 | }
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| 25 | }
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| 26 | }
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| 27 | MatError.decorators = [
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| 28 | { type: Directive, args: [{
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| 29 | selector: 'mat-error',
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| 30 | host: {
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| 31 | 'class': 'mat-error',
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| 32 | '[attr.id]': 'id',
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| 33 | 'aria-atomic': 'true',
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| 34 | },
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| 35 | providers: [{ provide: MAT_ERROR, useExisting: MatError }],
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| 36 | },] }
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| 37 | ];
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| 38 | MatError.ctorParameters = () => [
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| 39 | { type: String, decorators: [{ type: Attribute, args: ['aria-live',] }] },
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| 40 | { type: ElementRef }
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| 41 | ];
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| 42 | MatError.propDecorators = {
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| 43 | id: [{ type: Input }]
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| 44 | };
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| 45 | //# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiZXJyb3IuanMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyIuLi8uLi8uLi8uLi8uLi8uLi9zcmMvbWF0ZXJpYWwvZm9ybS1maWVsZC9lcnJvci50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQTs7Ozs7O0dBTUc7QUFFSCxPQUFPLEVBQUMsU0FBUyxFQUFFLFNBQVMsRUFBRSxVQUFVLEVBQUUsY0FBYyxFQUFFLEtBQUssRUFBQyxNQUFNLGVBQWUsQ0FBQztBQUV0RixJQUFJLFlBQVksR0FBRyxDQUFDLENBQUM7QUFFckI7Ozs7R0FJRztBQUNILE1BQU0sQ0FBQyxNQUFNLFNBQVMsR0FBRyxJQUFJLGNBQWMsQ0FBVyxVQUFVLENBQUMsQ0FBQztBQUVsRSxrRUFBa0U7QUFVbEUsTUFBTSxPQUFPLFFBQVE7SUFHbkIsWUFBb0MsUUFBZ0IsRUFBRSxVQUFzQjtRQUZuRSxPQUFFLEdBQVcsYUFBYSxZQUFZLEVBQUUsRUFBRSxDQUFDO1FBR2xELHlGQUF5RjtRQUN6Riw0RkFBNEY7UUFDNUYsSUFBSSxDQUFDLFFBQVEsRUFBRTtZQUNiLFVBQVUsQ0FBQyxhQUFhLENBQUMsWUFBWSxDQUFDLFdBQVcsRUFBRSxRQUFRLENBQUMsQ0FBQztTQUM5RDtJQUNILENBQUM7OztZQWxCRixTQUFTLFNBQUM7Z0JBQ1QsUUFBUSxFQUFFLFdBQVc7Z0JBQ3JCLElBQUksRUFBRTtvQkFDSixPQUFPLEVBQUUsV0FBVztvQkFDcEIsV0FBVyxFQUFFLElBQUk7b0JBQ2pCLGFBQWEsRUFBRSxNQUFNO2lCQUN0QjtnQkFDRCxTQUFTLEVBQUUsQ0FBQyxFQUFDLE9BQU8sRUFBRSxTQUFTLEVBQUUsV0FBVyxFQUFFLFFBQVEsRUFBQyxDQUFDO2FBQ3pEOzs7eUNBSWMsU0FBUyxTQUFDLFdBQVc7WUF4Qk4sVUFBVTs7O2lCQXNCckMsS0FBSyIsInNvdXJjZXNDb250ZW50IjpbIi8qKlxuICogQGxpY2Vuc2VcbiAqIENvcHlyaWdodCBHb29nbGUgTExDIEFsbCBSaWdodHMgUmVzZXJ2ZWQuXG4gKlxuICogVXNlIG9mIHRoaXMgc291cmNlIGNvZGUgaXMgZ292ZXJuZWQgYnkgYW4gTUlULXN0eWxlIGxpY2Vuc2UgdGhhdCBjYW4gYmVcbiAqIGZvdW5kIGluIHRoZSBMSUNFTlNFIGZpbGUgYXQgaHR0cHM6Ly9hbmd1bGFyLmlvL2xpY2Vuc2VcbiAqL1xuXG5pbXBvcnQge0F0dHJpYnV0ZSwgRGlyZWN0aXZlLCBFbGVtZW50UmVmLCBJbmplY3Rpb25Ub2tlbiwgSW5wdXR9IGZyb20gJ0Bhbmd1bGFyL2NvcmUnO1xuXG5sZXQgbmV4dFVuaXF1ZUlkID0gMDtcblxuLyoqXG4gKiBJbmplY3Rpb24gdG9rZW4gdGhhdCBjYW4gYmUgdXNlZCB0byByZWZlcmVuY2UgaW5zdGFuY2VzIG9mIGBNYXRFcnJvcmAuIEl0IHNlcnZlcyBhc1xuICogYWx0ZXJuYXRpdmUgdG9rZW4gdG8gdGhlIGFjdHVhbCBgTWF0RXJyb3JgIGNsYXNzIHdoaWNoIGNvdWxkIGNhdXNlIHVubmVjZXNzYXJ5XG4gKiByZXRlbnRpb24gb2YgdGhlIGNsYXNzIGFuZCBpdHMgZGlyZWN0aXZlIG1ldGFkYXRhLlxuICovXG5leHBvcnQgY29uc3QgTUFUX0VSUk9SID0gbmV3IEluamVjdGlvblRva2VuPE1hdEVycm9yPignTWF0RXJyb3InKTtcblxuLyoqIFNpbmdsZSBlcnJvciBtZXNzYWdlIHRvIGJlIHNob3duIHVuZGVybmVhdGggdGhlIGZvcm0gZmllbGQuICovXG5ARGlyZWN0aXZlKHtcbiAgc2VsZWN0b3I6ICdtYXQtZXJyb3InLFxuICBob3N0OiB7XG4gICAgJ2NsYXNzJzogJ21hdC1lcnJvcicsXG4gICAgJ1thdHRyLmlkXSc6ICdpZCcsXG4gICAgJ2FyaWEtYXRvbWljJzogJ3RydWUnLFxuICB9LFxuICBwcm92aWRlcnM6IFt7cHJvdmlkZTogTUFUX0VSUk9SLCB1c2VFeGlzdGluZzogTWF0RXJyb3J9XSxcbn0pXG5leHBvcnQgY2xhc3MgTWF0RXJyb3Ige1xuICBASW5wdXQoKSBpZDogc3RyaW5nID0gYG1hdC1lcnJvci0ke25leHRVbmlxdWVJZCsrfWA7XG5cbiAgY29uc3RydWN0b3IoQEF0dHJpYnV0ZSgnYXJpYS1saXZlJykgYXJpYUxpdmU6IHN0cmluZywgZWxlbWVudFJlZjogRWxlbWVudFJlZikge1xuICAgIC8vIElmIG5vIGFyaWEtbGl2ZSB2YWx1ZSBpcyBzZXQgYWRkICdwb2xpdGUnIGFzIGEgZGVmYXVsdC4gVGhpcyBpcyBwcmVmZXJyZWQgb3ZlciBzZXR0aW5nXG4gICAgLy8gcm9sZT0nYWxlcnQnIHNvIHRoYXQgc2NyZWVuIHJlYWRlcnMgZG8gbm90IGludGVycnVwdCB0aGUgY3VycmVudCB0YXNrIHRvIHJlYWQgdGhpcyBhbG91ZC5cbiAgICBpZiAoIWFyaWFMaXZlKSB7XG4gICAgICBlbGVtZW50UmVmLm5hdGl2ZUVsZW1lbnQuc2V0QXR0cmlidXRlKCdhcmlhLWxpdmUnLCAncG9saXRlJyk7XG4gICAgfVxuICB9XG59XG4iXX0= |
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