import { LitElement, PropertyValues, TemplateResult } from "lit-element";
import { EventListenerSubscription } from "../util/event";
/**
 * Properties of the label.
 */
export interface ILabelProperties {
    required: boolean;
    nowrap: boolean;
    for?: string;
}
/**
 * Make form elements more accessible.
 * @slot - Default content. If the first element is a form element, clicks on the entire label will be re-fired upon that element.
 * @cssprop --label-font-size - Font size
 * @cssprop --label-font-family - Font family
 * @cssprop --label-line-height - Line height
 * @cssprop --label-color - Color.
 * @cssprop --label-required-color - Color of the required astrix
 */
export declare class Label extends LitElement implements ILabelProperties {
    static styles: import("lit-element").CSSResult[];
    /**
     * Styles the label as required.
     * @attr
     */
    required: boolean;
    /**
     * Caps the label element with ellipsis if overflowing.
     * @attr
     */
    nowrap: boolean;
    /**
     * Query of the form element click events are re-fired upon.
     * @attr
     */
    for?: string;
    /**
     * Event listener subscriptions.
     */
    protected listeners: EventListenerSubscription[];
    /**
     * Hooks up the element.
     * @param props
     */
    firstUpdated(props: PropertyValues): void;
    /**
     * Tears down the element.
     */
    disconnectedCallback(): void;
    /**
     * Returns the target element.
     */
    getTargetElement(): Element | null;
    /**
     * Updates the aria attributes.
     */
    protected updateAria(): void;
    /**
     * Refires the click event on the target.
     */
    protected refireClick(e: MouseEvent): void;
    /**
     * Returns the template for the element.
     */
    protected render(): TemplateResult;
}
declare global {
    interface HTMLElementTagNameMap {
        "wl-label": Label;
    }
}