import { OnInit, EventEmitter, ChangeDetectorRef, ElementRef, OnDestroy, OnChanges } from '@angular/core';
import { GanttGroupInternal } from '../../class/group';
import { GanttItemInternal } from './../../class/item';
import { GanttLineClickEvent } from '../../class/event';
import { GanttDragContainer } from '../../gantt-drag-container';
import { GanttUpper } from '../../gantt-upper';
import { LinkInternal, GanttLinkType } from '../../class/link';
import * as i0 from "@angular/core";
export declare class GanttLinksComponent implements OnInit, OnChanges, OnDestroy {
    ganttUpper: GanttUpper;
    private cdr;
    private elementRef;
    private ganttDragContainer;
    groups: GanttGroupInternal[];
    items: GanttItemInternal[];
    lineClick: EventEmitter<GanttLineClickEvent<unknown>>;
    links: LinkInternal[];
    ganttLinkTypes: typeof GanttLinkType;
    showArrow: boolean;
    private linkItems;
    private firstChange;
    private linkLine;
    private unsubscribe$;
    ganttLinksOverlay: boolean;
    constructor(ganttUpper: GanttUpper, cdr: ChangeDetectorRef, elementRef: ElementRef, ganttDragContainer: GanttDragContainer);
    ngOnInit(): void;
    ngOnChanges(): void;
    private computeItemPosition;
    buildLinks(): void;
    trackBy(index: number): number;
    onLineClick(event: MouseEvent, link: LinkInternal): void;
    mouseEnterPath(link: LinkInternal, index: number): void;
    mouseLeavePath(link: LinkInternal): void;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<GanttLinksComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<GanttLinksComponent, "gantt-links-overlay", never, { "groups": "groups"; "items": "items"; }, { "lineClick": "lineClick"; }, never, never>;
}