import { EventEmitter, StaticProvider } from '@angular/core';
import { AsyncValidator, FormControl, ValidationErrors } from '@angular/forms';
import { Observable, Subject } from 'rxjs';
import { AsyncValidationAlerts, ValidationAlerts } from '../validation-alert/validation-alert';
import { FormAsyncValidatorBase } from '../validators/base-async-validator';
import { SmeAsyncValidator } from '../validators/sme-async-validator';
import * as i0 from "@angular/core";
/**
 * Arguments for the @see FormFieldAsyncValidatorDirective.customAsyncValidate Output event
 */
export interface CheckAsyncValidationEventArgs {
    /**
     * The form control that we are validating
     */
    formControl: FormControl;
    /**
     * An observable that emits an alert object when complete
     */
    alerts: AsyncValidationAlerts;
}
/**
 * Provider for the FormFieldAsyncValidatorDirective directive
 */
export declare const FORM_FIELD_ASYNC_VALIDATOR: StaticProvider;
export declare const defaultAsyncValidationDebounceTime = 800;
/**
 * Implementation of Async Validator for sme-form-field
 * The selector for this directive must match @see FormFieldComponent.selector. see FormFieldComponent for details.
 */
export declare class FormFieldAsyncValidatorDirective extends FormAsyncValidatorBase implements AsyncValidator {
    private asyncValidators;
    customAsyncValidateDisabled: boolean;
    customAsyncValidateDebounceTime: number;
    /**
     * EventEmitter for checking validation and raising alerts
     * Subscribers are expected to populate the 'alerts' map with their own validation alerts
     */
    customAsyncValidate: EventEmitter<CheckAsyncValidationEventArgs>;
    /**
     * Subject to emit when new alerts are available
     */
    asyncAlert: Subject<ValidationAlerts>;
    /**
     * Instantiates a new instance of FormFieldAsyncValidatorDirective
     */
    constructor(asyncValidators: Array<SmeAsyncValidator>);
    /**
     * Implementation of Validator interface.
     * Validates the value of this elements form control. Use the @see checkValidate event to hook into this function.
     * @param c The FormControl attached to this element
     * @return null when valid, otherwise returns a validation object in the form of "{ errorType: {valid: false} }".
     */
    validate(c: FormControl): Observable<ValidationErrors | null>;
    static ɵfac: i0.ɵɵFactoryDeclaration<FormFieldAsyncValidatorDirective, [{ optional: true; self: true; }]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<FormFieldAsyncValidatorDirective, "sme-form-field[customAsyncValidate]", never, { "customAsyncValidateDisabled": "customAsyncValidateDisabled"; "customAsyncValidateDebounceTime": "customAsyncValidateDebounceTime"; }, { "customAsyncValidate": "customAsyncValidate"; }, never, never, false, never>;
}