rcx-virtual-list/utils/tracker.d.ts

Maximum performance for extremely large lists.<br/> Flexible, and actively maintained React library that excels with high-performance, feature-rich virtualized lists—including grouping, sticky headers, snapping, animations, and both scroll directions. Wh

/// <reference types="react" />
import { IVirtualListItemMethods, ScrollDirection } from "../models";
import { Id, ISize } from "../types";
import { CMap } from "./cacheMap";
type TrackingPropertyId = string | number;
export interface IVirtualListItemComponent<I = any> {
    getBounds(): ISize;
    itemId: Id;
    id: number;
    item: I | null;
    show: () => void;
    hide: () => void;
}
/**
 * Tracks display items by property
 * @link https://github.com/DjonnyX/rcx-virtual-list/tree/main/src/lib/src/utils/tracker.ts
 * @author Evgenii Grebennikov
 * @email djonnyx@gmail.com
 */
export declare class Tracker<C extends IVirtualListItemMethods = any> {
    /**
     * display objects dictionary of indexes by id
     */
    protected _displayObjectIndexMapById: {
        [id: number]: number;
    };
    set displayObjectIndexMapById(v: {
        [id: number]: number;
    });
    get displayObjectIndexMapById(): {
        [id: number]: number;
    };
    /**
     * Dictionary displayItems propertyNameId by items propertyNameId
     */
    protected _trackMap: CMap<TrackingPropertyId, number>;
    get trackMap(): CMap<TrackingPropertyId, number>;
    protected _trackingPropertyName: string;
    set trackingPropertyName(v: string);
    constructor(trackingPropertyName: string);
    /**
     * tracking by propName
     */
    track(items: Array<any>, components: Array<React.RefObject<C>>, snapedComponent: React.RefObject<C> | null | undefined, direction: ScrollDirection): void;
    untrackComponentByIdProperty(component?: C): void;
    dispose(): void;
}
export {};