import { Placement } from '@floating-ui/dom';
import { Ref } from 'lit/directives/ref.js';
import { TestableLitElement } from '../../utils/components/testable-lit-element/testable-lit-element.ts';
import { PropertyValues } from 'lit';
export type NJC_POPOVER_SIZE = 'small' | 'medium' | 'large';
export declare class NjcPopover extends TestableLitElement {
    /**
     * @property {string} referenceId
     * @description The id of the reference element that is used to trigger the popover
     */
    referenceId: string;
    /**
     * @property {string} title
     * @description The title for the popover
     */
    title: string;
    /**
     * @property {Placement} placement
     * @description The placement of the popover relative to the reference element
     */
    placement: Placement | undefined;
    /**
     * @property {number} xOffset
     * @description X offset of the popover's position
     */
    xOffset: number;
    /**
     * @property {number} yOffset
     * @description Y offset of the popover's position
     */
    yOffset: number;
    /**
     * @property {string} iconName
     * @description The name of the icon to use in the content of the popover
     */
    iconName: string | undefined;
    /**
     * @property {string} errorText
     * @description The error text that is shown in the footer of the popover
     */
    errorText: string | undefined;
    /**
     * @property {NJC_POPOVER_SIZE} size
     * @description The size of the popover
     */
    size: NJC_POPOVER_SIZE;
    /**
     * @property {string} showOnHover
     * @description If true, the popover will show on hover of the reference element. If false,
     *              the popover will be shown on click of the reference element.
     */
    showOnHover: boolean;
    _popoverRef: Ref<HTMLElement>;
    _cleanup: (() => void) | undefined;
    private _forceOpen;
    private _open;
    private _mousedInsidePopover;
    protected _placement: Placement;
    popoverId: string;
    get isOpen(): boolean;
    firstUpdated(): void;
    protected updated(_changedProperties: PropertyValues): void;
    get referenceElement(): HTMLElement;
    private _addShowOnHoverEvents;
    private _addShowOnClickEvents;
    private _hasPopoverAsParent;
    elementListeners: WeakMap<object, any>;
    addTrackedEventListener(element: HTMLElement | Document, eventType: string, listener: Function, options?: AddEventListenerOptions): void;
    removeAllTrackedEventListeners(element: HTMLElement | Document): void;
    _handleMouseLeave(e: MouseEvent, referenceElement: HTMLElement, popoverElement: HTMLElement): void;
    _isMouseInside(e: MouseEvent, rect: DOMRect, padding?: number): boolean;
    showPopover(triggeredByKeyboard?: boolean): void;
    hidePopover(): void;
    protected _getKeyboardFocusableElements(): HTMLElement[];
    protected _focusFirstElement(useVisibleFocus?: boolean): void;
    /**
     * Override this function to use floating UI autoUpdate and computePosition
     */
    protected assignPosition(): void;
    disconnectedCallback(): void;
}