import { TemplateResult, CSSResultArray } from 'lit';
import NileElement from '../../internal/nile-element';
export interface InsertMenuItem {
    label: string;
    description?: string;
}
/**
 * Generic list popover for "pick one and insert" toolbar actions — used by the
 * template and merge-field pickers. Emits `wysiwyg-insert-select` { index } and
 * `wysiwyg-insert-cancel`. Never takes focus, so the editor selection survives.
 */
export declare class NileWysiwygInsertMenu extends NileElement {
    open: boolean;
    heading: string;
    emptyText: string;
    items: InsertMenuItem[];
    static get styles(): CSSResultArray;
    private handleKeydown;
    render(): TemplateResult;
}
declare global {
    interface HTMLElementTagNameMap {
        'nile-wysiwyg-insert-menu': NileWysiwygInsertMenu;
    }
}