import { ChangeDetectorRef, OnChanges, OnDestroy, OnInit, SimpleChanges } from '@angular/core';
import { TreeNode, TreeTemplateMapping, TreeUIOptions } from '../../models';
import { PosPair, TreeVirtualScroll } from '../../services/tree-virtual-scroll.service';
/** Time and timing curve for expansion panel animations. */
export declare const EXPANSION_PANEL_ANIMATION_TIMING = "225ms cubic-bezier(0.4,0.0,0.2,1)";
export declare class TreeNodeChildrenComponent implements OnInit, OnChanges, OnDestroy {
    private virtualScroll;
    private cdRef;
    marginTop: number;
    viewportNodes: TreeNode[];
    options: TreeUIOptions;
    node: TreeNode;
    templates: TreeTemplateMapping;
    disableMarginTop: boolean;
    children: TreeNode[];
    refreshTree: boolean;
    expandAnimation: boolean;
    className: boolean;
    get noPadding(): boolean;
    get marginTopAttr(): number;
    private scrollSub;
    constructor(virtualScroll: TreeVirtualScroll, cdRef: ChangeDetectorRef);
    ngOnInit(): void;
    ngOnChanges(changes: SimpleChanges): void;
    ngOnDestroy(): void;
    trackNode(index: number, node: TreeNode): any;
    calcMarginTop(): number;
    getViewportNodes(nodes: TreeNode[], { startPos, endPos }: PosPair): TreeNode[];
}