/********** Angular **********/
import { OnInit } from "@angular/core";
/********** Ionic **********/
/********** Plugin **********/
/********** Component & Service **********/
import { ContainerFieldBase } from "../components/containerfieldbase.component";
import { ZComponentService } from "../services/zcomponent.service";
import { DataSetResult, FontAweSomeService, VirtualScrollOption, ZComponent } from "mmhglobal-zcore";
import { CdkVirtualScrollViewport } from "@angular/cdk/scrolling";
import * as i0 from "@angular/core";
export declare class VirtualScrollComponent extends ContainerFieldBase implements ZComponent, OnInit {
    fontAweSomeService: FontAweSomeService;
    viewPort: CdkVirtualScrollViewport;
    collapsedGroupBy: any[];
    groupByValueToExpand: string;
    collapsedGroupBy_FirstNodeIndexList: number[];
    private fullDataItems;
    dataItems: Array<any>;
    pageSize: number;
    pageFetched: any[];
    options: VirtualScrollOption;
    footerFields: any[];
    constructor(componentService: ZComponentService, fontAweSomeService: FontAweSomeService);
    ngOnInit(): void;
    ngAfterViewInit(): void;
    scrollToTop(): void;
    private setupComponent;
    appendData(dataItems: Array<any>): void;
    private setupDataItems;
    setData(dataSetResult: DataSetResult): void;
    private populateListData;
    private fetchData;
    private updateDataByIndex;
    private updateViewPortData;
    setupFooter(): void;
    getComponentOptions(): VirtualScrollOption;
    getGroupByLabelTemplate(dataItem: any, options: any): string;
    groupByOnClick(groupByValue: string): void;
    private computeDataItems;
    expandAll(): void;
    expandByGroupByValues(groupByValue: Array<string>): void;
    onClick(event: any, dataItem: any): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<VirtualScrollComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<VirtualScrollComponent, "app-virtual-scroll", never, {}, {}, never, never>;
}