import { TemplateResult } from "lit-element";
import { Ripple } from "../../ripple/ripple";
import { FormElementBehavior, IFormElementBehaviorProperties } from "../form-element/index";
/**
 * Properties of the button behavior.
 */
export interface IButtonBehaviorProperties extends IFormElementBehaviorProperties {
    type: "button" | "submit";
}
/**
 * Provides button behavior.
 */
export declare abstract class ButtonBehavior extends FormElementBehavior implements IButtonBehaviorProperties {
    static styles: import("lit-element").CSSResult[];
    /**
     * Type of the button.
     * @attr
     */
    type: "button" | "submit";
    /**
     * Ripple element.
     */
    protected abstract get $ripple(): Ripple | null;
    /**
     * Hooks up the component.
     */
    connectedCallback(): void;
    /**
     * Handles the key down event.
     * @param e
     */
    protected onKeyDown(e: Event): void;
    /**
     * Handles click events on the button.
     * @param e
     */
    protected onClick(e: Event): void;
    /**
     * Returns the form element
     */
    protected renderFormElement(): TemplateResult;
}