import { ElementRef, NgZone, OnChanges, SimpleChanges } from '@angular/core';
import { FilterDefault } from './filter-default';
import { Subscription } from 'rxjs';
import { ViewportRuler } from '@angular/cdk/scrolling';
import * as i0 from "@angular/core";
export declare class FilterComponent extends FilterDefault implements OnChanges {
    private el;
    private readonly viewportRuler;
    private readonly ngZone;
    query: string;
    protected dataChangedSub: Subscription;
    private readonly viewportChange;
    constructor(el: ElementRef, viewportRuler: ViewportRuler, ngZone: NgZone);
    setSize(): void;
    ngOnChanges(changes: SimpleChanges): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<FilterComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<FilterComponent, "ng2-smart-table-filter", never, {}, {}, never, never>;
}