import { UmbLitElement } from '../../lit-element/index.js';
declare const UmbInputDropdownListElement_base: import("../../../../libs/extension-api/index.js").HTMLElementConstructor<import("../../validation/index.js").UmbFormControlMixinElement<string | undefined>> & typeof UmbLitElement;
export declare class UmbInputDropdownListElement extends UmbInputDropdownListElement_base {
    #private;
    set options(value: Array<Option> | undefined);
    get options(): Array<Option> | undefined;
    placeholder?: string;
    multiple?: boolean;
    name?: string;
    /**
     * Sets the input to required, meaning validation will fail if the value is empty.
     * @type {boolean}
     */
    required?: boolean;
    requiredMessage?: string;
    /**
     * Sets the input to readonly mode, meaning value cannot be changed but still able to read and select its content.
     * @type {boolean}
     * @attr
     * @default false
     */
    readonly: boolean;
    constructor();
    protected firstUpdated(): void;
    render(): import("lit-html").TemplateResult<1>;
    static styles: import("lit").CSSResult[];
}
export default UmbInputDropdownListElement;
declare global {
    interface HTMLElementTagNameMap {
        'umb-input-dropdown-list': UmbInputDropdownListElement;
    }
}