import { CSSResultGroup, PropertyValues, TemplateResult } from 'lit';
import { SbbOverlayCloseEventDetails } from '../core/interfaces.ts';
import { SbbOverlayBaseElement } from './overlay-base-element.ts';
/**
 * It displays an interactive overlay element.
 *
 * @slot - Use the unnamed slot to provide a content for the overlay.
 * @cssprop [--sbb-overlay-z-index=var(--sbb-overlay-default-z-index)] - To specify a custom stack order,
 * the `z-index` can be overridden by defining this CSS variable. The default `z-index` of the
 * component is set to `var(--sbb-overlay-default-z-index)` with a value of `1000`.
 */
export declare class SbbOverlayElement extends SbbOverlayBaseElement {
    static readonly elementName: string;
    static styles: CSSResultGroup;
    static readonly events: {
        readonly beforeopen: "beforeopen";
        readonly open: "open";
        readonly beforeclose: "beforeclose";
        readonly close: "close";
    };
    /**
     * Whether to allow the overlay content to stretch to full width.
     * By default, the content has the appropriate page size.
     */
    accessor expanded: boolean;
    /** This will be forwarded as aria-label to the close button element. */
    accessor accessibilityCloseLabel: string;
    protected closeAttribute: string;
    private _overlayContentElement;
    connectedCallback(): void;
    protected firstUpdated(changedProperties: PropertyValues<this>): void;
    protected isZeroAnimationDuration(): boolean;
    protected handleOpening(): void;
    protected handleClosing(): void;
    protected dispatchBeforeCloseEvent(_detail?: SbbOverlayCloseEventDetails): boolean;
    protected dispatchCloseEvent(_detail?: SbbOverlayCloseEventDetails): boolean;
    protected render(): TemplateResult;
}
declare global {
    interface HTMLElementTagNameMap {
        'sbb-overlay': SbbOverlayElement;
    }
}
//# sourceMappingURL=overlay.component.d.ts.map