import type { TemplateResult, CSSResultArray, PropertyValues } from 'lit';
import { OverlayElement } from '../base/overlay-element';
import type { Placement, PositioningStrategy } from '../base/overlay-element';
export type { Placement, PositioningStrategy };
declare const PharosPopover_base: typeof OverlayElement;
/**
 * Pharos popover component.
 *
 * @tag pharos-popover
 * @slot - Contains the popover contents.
 *
 * @fires pharos-popover-opened - Fires when the popover is opened
 * @fires pharos-popover-closed - Fires when the popover is closed
 *
 */
export declare class PharosPopover extends PharosPopover_base {
    private _focusTrapController;
    /**
     * Indicates the menu item is displayed on a dark background.
     * @attr is-on-background
     */
    isOnBackground: boolean;
    /**
     * Indicates the aria-label to apply to the dialog.
     * @attr a11y-label
     */
    a11yLabel?: string;
    /**
     * Indicates the aria-labelledby to apply to the dialog.
     * @attr labelledBy
     */
    labelledBy?: string;
    private _popover;
    private _triggers;
    private _currentTrigger;
    private _hasHover;
    private _enterByKey;
    private _cleanup?;
    constructor();
    static get styles(): CSSResultArray;
    removeAllTriggers(): void;
    openWithTrigger(trigger: HTMLElement): Promise<void>;
    protected firstUpdated(): void;
    protected update(changedProperties: PropertyValues): void;
    private _emitVisibilityChange;
    protected updated(changedProperties: PropertyValues): void;
    connectedCallback(): void;
    private _removeTriggerListeners;
    disconnectedCallback(): void;
    private _popoverId;
    private _addTriggerListeners;
    private _addTriggerElement;
    private _setupTriggerElement;
    private _setupPopover;
    private _handleTriggerClick;
    private _handleTriggerKeydown;
    private _handleTriggerHover;
    private _handleKeydown;
    private _handleClick;
    private _setOpen;
    private _handleHover;
    private _focusContents;
    private _returnTriggerFocus;
    private _handlePopoverKeydown;
    private _setHoverListeners;
    private _setTriggerAttributes;
    private _openPopover;
    protected render(): TemplateResult;
}
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