import IHTMLElement from '../html-element/IHTMLElement';
import IHTMLFormElement from '../html-form-element/IHTMLFormElement';
import IHTMLLabelElement from '../html-label-element/IHTMLLabelElement';
import INodeList from '../node/INodeList';
import IHTMLOptionsCollection from '../html-option-element/IHTMLOptionsCollection';
import ValidityState from '../validity-state/ValidityState';
import Event from '../../event/Event';
import IHTMLOptionElement from '../html-option-element/IHTMLOptionElement';
import IHTMLOptGroupElement from '../html-opt-group-element/IHTMLOptGroupElement';
/**
 * HTML Select Element.
 *
 * Reference:
 * https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement.
 */
export default interface IHTMLSelectElement extends IHTMLElement {
    readonly form: IHTMLFormElement;
    readonly labels: INodeList<IHTMLLabelElement>;
    readonly options: IHTMLOptionsCollection;
    readonly type: string;
    readonly validity: ValidityState;
    readonly willValidate: boolean;
    autofocus: boolean;
    disabled: boolean;
    length: number;
    selectedIndex: number;
    value: string;
    name: string;
    multiple: boolean;
    onchange: (event: Event) => void | null;
    oninput: (event: Event) => void | null;
    /**
     * Adds new option to collection.
     *
     * @param element HTMLOptionElement or HTMLOptGroupElement to add.
     * @param before HTMLOptionElement or index number.
     */
    add(element: IHTMLOptionElement | IHTMLOptGroupElement, before?: number | IHTMLOptionElement | IHTMLOptGroupElement): void;
    /**
     * Returns option element by index.
     *
     * @param index Index.
     */
    item(index: number): IHTMLOptionElement | IHTMLOptGroupElement;
    /**
     * Removes option element from the collection.
     *
     * @param index Index.
     */
    remove(index?: number): void;
}