import { WaterfallEntry } from "./waterfall";
export declare type OnCloseFn = (overlayIndex: number) => void;
/** Metadata to describe open overlays */
export interface OpenOverlay {
    /** index of row (request) associated with overlay  */
    index: number;
    /** default Y position of overlay if no overlay is opened */
    defaultY: number;
    /** data of row */
    entry: WaterfallEntry;
    /** callback called when closing overlay */
    onClose: OnCloseFn;
    /** current y position */
    actualY?: number;
    /** current visible height of the overlay in px */
    height?: number;
    /** index of the currently opened tab of the overlay */
    openTabIndex?: number;
}
export interface OverlayChangeEvent {
    type: EventType;
    /** index that triggerd the change */
    changedIndex?: number;
    combinedOverlayHeight: number;
}
/**
 * @param  {OverlayChangeEvent} change - overlay change event
 * @returns void
 */
export declare type OverlayChangeSubscriber = (change: OverlayChangeEvent) => void;
export declare type EventType = "closed" | "open";