import IHTMLElement from '../html-element/IHTMLElement.js';
import IHTMLFormElement from '../html-form-element/IHTMLFormElement.js';
import IHTMLLabelElement from '../html-label-element/IHTMLLabelElement.js';
import INodeList from '../node/INodeList.js';
import IHTMLOptionsCollection from './IHTMLOptionsCollection.js';
import ValidityState from '../../validity-state/ValidityState.js';
import Event from '../../event/Event.js';
import IHTMLOptionElement from '../html-option-element/IHTMLOptionElement.js';
import IHTMLOptGroupElement from '../html-opt-group-element/IHTMLOptGroupElement.js';
/**
 * 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;
    readonly validationMessage: string;
    autofocus: boolean;
    disabled: boolean;
    length: number;
    selectedIndex: number;
    value: string;
    name: string;
    multiple: boolean;
    required: 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;
    /**
     * Sets validation message.
     *
     * @param message Message.
     */
    setCustomValidity(message: string): void;
    /**
     * Checks validity.
     *
     * @returns "true" if the field is valid.
     */
    checkValidity(): boolean;
    /**
     * Reports validity.
     *
     * @returns "true" if the field is valid.
     */
    reportValidity(): boolean;
}
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