import { DoCheck, ElementRef, EventEmitter } from '@angular/core';
import { HcFormControlComponent } from '../form-field/hc-form-control.component';
import { FormGroupDirective, NgControl, NgForm } from '@angular/forms';
export declare function getUnsupportedHCInputType(type: string): Error;
/** Directive that allows a native input to work inside a HcFormFieldComponent */
export declare class InputDirective extends HcFormControlComponent implements DoCheck {
    private _elementRef;
    _ngControl: NgControl;
    private _focused;
    private _uniqueInputId;
    private _form;
    _componentId: string;
    /** Allows for text visibility toggle. */
    toggleVisible: boolean;
    /** Input type of the element. */
    type: string;
    private _type;
    /** Element id. */
    id: string;
    /** Sets input element as readonly. */
    readonly: boolean;
    private _readonly;
    /** Disables the input element. */
    disabled: boolean;
    /** Sets required attribute. */
    required: boolean;
    inputFocused: EventEmitter<boolean>;
    _hostHcInputClass: boolean;
    readonly _hostId: string;
    readonly _hostReadOnly: boolean;
    readonly _hostDisabled: boolean;
    readonly _hostRequired: boolean;
    _onBlur(): void;
    _onFocus(): void;
    /** Sets value of the input element */
    value: string;
    _inputEvent(): void;
    constructor(_elementRef: ElementRef, _parentForm: NgForm, _parentFormGroup: FormGroupDirective, _ngControl: NgControl);
    ngDoCheck(): void;
    /** Sets the focus on the input element */
    focus(): void;
    private _changeFocus;
    private _isTextArea;
    private _updateErrorState;
    private _updateDisableState;
}