import { EventEmitter, ChangeDetectorRef } from '@angular/core';
import { Column } from '../../models/column';
import { HelperService } from '../../Services/Helper.Service';
export declare class MDGColumnsComponent {
    private cdRef;
    private helper;
    columns: Column[];
    updateColumns: EventEmitter<Column[]>;
    showColumns: boolean;
    selectAll: boolean;
    onKeydownHandler(event: KeyboardEvent): void;
    constructor(cdRef: ChangeDetectorRef, helper: HelperService);
    ShowColumns(cols: Column[]): void;
    checkSelection(): void;
    checkAllSelected(): void;
    addColumn(col: any): void;
    applyColumns(): void;
    getDisplayDate(input: string): string;
    detectChanges(): void;
}