import { StaticProvider } from '@angular/core';
import { FormControl } from '@angular/forms';
import { ValidationAlerts } from '../validation-alert/validation-alert';
import { FormValidatorBase } from './base-validator';
import * as i0 from "@angular/core";
/**
 * Provider for the FormFieldValidatorDirective directive
 */
export declare const INPUT_VALIDATOR: StaticProvider;
/**
 * A Directive that marks a field as invalid if it contains standard invalid characters. Primarily used to prevent
 * html tags for security reasons.
 */
export declare class InputValidatorDirective extends FormValidatorBase {
    /**
     * Regex to detect invalid characters. Does not allow:
     *  - backslash (\)
     *  - slash mark (/)
     *  - asterisk (*)
     *  - question mark (?)
     *  - single quotation mark (')
     *  - double quotation mark (")
     *  - less than sign (<)
     *  - greater than sign (>)
     *  - vertical bar (|)
     */
    private readonly defaultInvalidCharacters;
    invalidCharacters: RegExp;
    errorMessage: string;
    /**
     * Instantiates a new instance of InputValidatorDirective
     */
    constructor();
    /**
      * Implementation of Validator interface.
      * Validates the value of the field attached to this control to be a valid input
      * @param c The FormControl attached to this element
      * @return null when valid, otherwise returns a validation object
      */
    validate(c: FormControl): ValidationAlerts | null;
    static ɵfac: i0.ɵɵFactoryDeclaration<InputValidatorDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<InputValidatorDirective, "sme-form-field[smeInputValidation][formControlName],sme-form-field[smeInputValidation][formControl],sme-form-field[smeInputValidation][ngModel]", never, { "invalidCharacters": "invalidCharacters"; "errorMessage": "errorMessage"; }, {}, never, never, false, never>;
}