/**
 * DO NOT EDIT
 *
 * This file was automatically generated by
 *   https://github.com/Polymer/tools/tree/master/packages/gen-typescript-declarations
 *
 * To modify these typings, edit the source file(s):
 *   iron-checked-element-behavior.js
 */

import {IronFormElementBehavior} from '@polymer/iron-form-element-behavior/iron-form-element-behavior.js';

import {IronValidatableBehavior} from '@polymer/iron-validatable-behavior/iron-validatable-behavior.js';

/**
 * Use `IronCheckedElementBehavior` to implement a custom element that has a
 * `checked` property, which can be used for validation if the element is also
 * `required`. Element instances implementing this behavior will also be
 * registered for use in an `iron-form` element.
 */
interface IronCheckedElementBehavior extends IronFormElementBehavior, IronValidatableBehavior {

  /**
   * Overriden from IronFormElementBehavior
   */
  value: string|null|undefined;

  /**
   * Gets or sets the state, `true` is checked and `false` is unchecked.
   */
  checked: boolean|null|undefined;

  /**
   * If true, the button toggles the active state with each tap or press
   * of the spacebar.
   */
  toggles: boolean|null|undefined;

  /**
   * Returns false if the element is required and not checked, and true
   * otherwise.
   *
   * @param _value Ignored.
   * @returns true if `required` is false or if `checked` is true.
   */
  _getValidity(_value?: any): boolean;
  created(): void;

  /**
   * Update the aria-required label when `required` is changed.
   */
  _requiredChanged(): void;

  /**
   * Fire `iron-changed` when the checked state changes.
   */
  _checkedChanged(): void;

  /**
   * Reset value to 'on' if it is set to `undefined`.
   */
  _valueChanged(): void;
}

declare const IronCheckedElementBehavior: object;

export {IronCheckedElementBehavior};