import { ListboxOption } from '../../../lib/option/option';
import { VividElement } from '../vivid-element/vivid-element';
export declare class Listbox extends VividElement {
    get length(): number;
    get options(): ListboxOption[];
    set options(value: ListboxOption[]);
    disabled: boolean;
    selectedIndex: number;
    selectedOptions: ListboxOption[];
    static slottedOptionFilter: (n: HTMLElement) => boolean;
    protected _validSelectedIndex(index: number): number;
    selectFirstOption(): void;
    protected _newDefaultSelectedIndex(prev: ListboxOption[], next: ListboxOption[], currentSelectedIndex: number): number | null;
    protected _isDefaultSelected(option: ListboxOption): boolean;
    protected setSelectedOptions(): void;
}