import { PropertyValues } from "lit-element";
import { ISwitchBehaviorProperties, SwitchBehavior } from "../switch/switch-behavior";
/**
 * Properties of the checkbox behavior.
 */
export interface ICheckboxBehaviorProperties extends ISwitchBehaviorProperties {
}
/**
 * Provides checkbox behavior.
 */
export declare abstract class CheckboxBehavior extends SwitchBehavior implements ICheckboxBehaviorProperties {
    static styles: import("lit-element").CSSResult[];
    /**
     * Indeterminate checkbox state.
     * @attr
     */
    indeterminate: boolean;
    /**
     * Checks and unchecks the checkbox.
     */
    protected toggle(): void;
    /**
     * Updates the aria attributes.
     * @param props
     */
    protected updateAria(props: PropertyValues): void;
}