import { LitElement } from '../lit/index.js';
export type PopoverPlacement = 'auto' | 'top' | 'top-start' | 'top-end' | 'bottom' | 'bottom-start' | 'bottom-end' | 'right' | 'right-start' | 'right-end' | 'left' | 'left-start' | 'left-end';
/**
 * @deprecated This component has been deprecated and will be removed in future releases. It is being replaced by popover-container.
 * @element uui-popover
 * @description Open a modal aligned with the opening element. This does not jet work within two layers of scroll containers.
 * @fires close - When popover is closed by user interaction.
 * @slot trigger - The element that triggers the popover.
 * @slot popover - The content of the popover.
 * @cssprop --uui-popover-z-index - overwrite the z-index of the popover container.
 */
export declare class UUIPopoverElement extends LitElement {
    private intersectionObserver?;
    private scrollEventHandler;
    private containerElement;
    private _open;
    private _placement;
    private _currentPlacement;
    private _trigger?;
    private _scrollParents;
    private _positionX?;
    private _positionY?;
    /**
     * Set the distance between popover-modal and trigger.
     * @type {number}
     * @attr margin
     * @default 0
     */
    margin: number;
    /**
     * Define the placement of the popover-modal.
     * @attr placement
     * @default 'bottom-start'
     */
    get placement(): PopoverPlacement;
    set placement(newValue: PopoverPlacement);
    /**
     * Opens the popover-modal.
     * @type {boolean}
     * @attr open
     * @default false
     */
    get open(): boolean;
    set open(newValue: boolean);
    connectedCallback(): void;
    disconnectedCallback(): void;
    private _onTriggerSlotChanged;
    private _openPopover;
    private _closePopover;
    private _triggerPopoverClose;
    private _getScrollParents;
    private _getAncestorElement;
    private _createIntersectionObserver;
    private _intersectionCallback;
    private _startScrollListener;
    private _stopScrollListener;
    private _onKeyUp;
    private _onDocumentClick;
    private _updatePlacement;
    private _managePlacementFlip;
    render(): import("lit-html").TemplateResult<1>;
    static styles: import("lit").CSSResult[];
}