import { QueryList, OnInit, ElementRef, OnDestroy, ChangeDetectorRef } from '@angular/core';
import { NgxGanttTableColumnComponent } from '../../../table/gantt-column.component';
import { CdkDragEnd, CdkDragMove, CdkDragStart } from '@angular/cdk/drag-drop';
import { GanttAbstractComponent } from '../../../gantt-abstract';
import * as i0 from "@angular/core";
export declare const defaultColumnWidth = 100;
export declare const minColumnWidth = 80;
export declare class GanttTableHeaderComponent implements OnInit, OnDestroy {
    private elementRef;
    private gantt;
    private cdr;
    dragStartLeft: number;
    tableWidth: number;
    private unsubscribe$;
    columns: QueryList<NgxGanttTableColumnComponent>;
    resizeLineElementRef: ElementRef<HTMLElement>;
    className: string;
    constructor(elementRef: ElementRef, gantt: GanttAbstractComponent, cdr: ChangeDetectorRef);
    ngOnInit(): void;
    private columnsChange;
    private dragFixed;
    onResizeStarted(event: CdkDragStart): void;
    onResizeMoved(event: CdkDragMove, column?: NgxGanttTableColumnComponent): void;
    onResizeEnded(event: CdkDragEnd, column: NgxGanttTableColumnComponent): void;
    onOverallResizeEnded(event: CdkDragEnd): void;
    private showAuxiliaryLine;
    private hideAuxiliaryLine;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<GanttTableHeaderComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<GanttTableHeaderComponent, "gantt-table-header", never, { "columns": { "alias": "columns"; "required": false; }; }, {}, never, never, false, never>;
}