import { ElementRef, OnDestroy } from '@angular/core';
import { MDCTextFieldCharacterCounterFoundation } from '@material/textfield';
import { MDCComponent } from '@shraddhar/web/base';
export declare class MdcTextFieldCharacterCounterFoundation extends MDCComponent<MDCTextFieldCharacterCounterFoundation> implements OnDestroy {
    private _hostElement;
    private _helperElement;
    private _document;
    _root: ElementRef;
    private _initialized;
    private _characterCounterElement?;
    get foundation(): MDCTextFieldCharacterCounterFoundation;
    constructor(_hostElement: ElementRef<HTMLElement>, _helperElement: HTMLElement, _document: Document);
    /** Initializes the foundation. */
    init(): void;
    getDefaultFoundation(): MDCTextFieldCharacterCounterFoundation;
    setCounterValue(currentLength: number, maxLength: number): void;
    /** Creates and appends counter to the helper element. */
    private _createCounterElement;
    /**
     * Appends the counter element to the textfield or textarea.
     */
    private _appendCounterElement;
    /** Destroys the foundation. */
    destroy(): void;
    ngOnDestroy(): void;
}