import { UmbLitElement } from '../../core/lit-element/index.js';
import type { UmbPropertyEditorConfigCollection, UmbPropertyEditorUiElement } from '../../core/property-editor/index.js';
declare const UmbPropertyEditorUIDropdownElement_base: import("../../../libs/extension-api/index.js").HTMLElementConstructor<import("../../core/validation/index.js").UmbFormControlMixinElement<string | string[] | undefined>> & typeof UmbLitElement;
/**
 * @element umb-property-editor-ui-dropdown
 */
export declare class UmbPropertyEditorUIDropdownElement extends UmbPropertyEditorUIDropdownElement_base implements UmbPropertyEditorUiElement {
    #private;
    private _multiple;
    private _options;
    set value(value: Array<string> | string | undefined);
    get value(): Array<string> | undefined;
    /**
     * 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;
    /**
     * Sets the input to mandatory, meaning validation will fail if the value is empty.
     * @type {boolean}
     */
    mandatory?: boolean;
    mandatoryMessage: string;
    name?: string;
    set config(config: UmbPropertyEditorConfigCollection | undefined);
    protected firstUpdated(): void;
    render(): import("lit-html").TemplateResult<1>;
    static readonly styles: (import("lit").CSSResult | import("lit").CSSResult[])[];
}
export default UmbPropertyEditorUIDropdownElement;
declare global {
    interface HTMLElementTagNameMap {
        'umb-property-editor-ui-dropdown': UmbPropertyEditorUIDropdownElement;
    }
}