import { CSSResultGroup, PropertyDeclaration, PropertyValues, TemplateResult } from 'lit';
import { SbbOpenCloseBaseElement } from '../../core.ts';
export declare class SbbPopoverCloseEvent extends Event {
    private readonly _closeTarget;
    get closeTarget(): HTMLElement | null;
    constructor(type: string, { closeTarget, cancelable }: Pick<Event, 'cancelable'> & {
        closeTarget: HTMLElement | null;
    });
}
export declare abstract class SbbPopoverBaseElement extends SbbOpenCloseBaseElement {
    static styles: CSSResultGroup;
    /**
     * The element that will trigger the popover overlay.
     *
     * For attribute usage, provide an id reference.
     */
    accessor trigger: HTMLElement | null;
    private _nextFocusedElement?;
    private _skipCloseFocus;
    private _popoverCloseElement?;
    private _isPointerDownEventOnPopover?;
    private _triggerElement?;
    private _triggerAbortController?;
    private _openStateController?;
    private _resizeController;
    private _escapableOverlayController;
    private _focusTrapController;
    private _blurTimeout;
    protected closeTimeout?: ReturnType<typeof setTimeout>;
    protected overlay?: HTMLDivElement;
    /** Opens the popover on trigger click. */
    open(): void;
    /** Closes the popover. */
    close(target?: HTMLElement): void;
    private _isZeroAnimationDuration;
    private _handleClosing;
    private _handleOpening;
    connectedCallback(): void;
    requestUpdate(name?: PropertyKey, oldValue?: unknown, options?: PropertyDeclaration): void;
    protected firstUpdated(changedProperties: PropertyValues<this>): void;
    disconnectedCallback(): void;
    private _configureTrigger;
    protected configureTrigger(_oldTrigger: HTMLElement | null): void;
    protected registerTriggerListeners(signal: AbortSignal): void;
    private _attachWindowEvents;
    private _closeOnSbbPopoverCloseClick;
    private _pointerDownListener;
    private _closeOnBackdropClick;
    private _onPopoverAnimationEnd;
    private _setPopoverFocus;
    private _setPopoverPosition;
    protected abstract renderContent(): TemplateResult;
    protected dispatchBeforeCloseEvent(detail?: {
        closeTarget: HTMLElement | null;
    }): boolean;
    protected dispatchCloseEvent(detail?: {
        closeTarget: HTMLElement | null;
    }): boolean;
    protected render(): TemplateResult;
}
//# sourceMappingURL=popover-base.d.ts.map