import { LitElement } from "lit";
import type { TemplateResult } from "lit";
import type { OverlayPlacement } from "../overlay/index.js";
/**
 * @fires xm-popover-close - Fired when the popover closes.
 * @fires xm-popover-open - Fired when the popover opens.
 */
export declare class XmPopover extends LitElement {
    static styles: CSSStyleSheet[];
    open: boolean;
    placement: OverlayPlacement;
    label: string;
    private _overlay;
    private _panel;
    private _triggerWrap;
    private readonly _panelId;
    private _closeReason;
    private _wasOpen;
    connectedCallback(): void;
    disconnectedCallback(): void;
    render(): TemplateResult;
    private _onTriggerClick;
    private _onDocPointer;
    private _onOverlayClose;
    private _requestClose;
    protected updated(changed: Map<string, unknown>): void;
    private get _triggerEl();
    private _wireTriggerAria;
}
declare global {
    interface HTMLElementTagNameMap {
        "xm-popover": XmPopover;
    }
}