import { ElementRef, OnInit, OnDestroy, Renderer2 } from '@angular/core';
import { NgxSelect2ExService } from '../services/ngx-select2-ex.service';
import { NgxSelect2ExDropdownInjectionService } from '../services/ngx-select2-ex-dropdown-injection.service';
import { WindowRef } from '../services/window-ref.service';
export declare class NgxSelect2ExDirective implements OnInit, OnDestroy {
    private el;
    private renderer;
    private ngxSelect2ExDropdownInjectionService;
    private winRef;
    service: NgxSelect2ExService;
    private compRef;
    private subscriptions;
    constructor(el: ElementRef, renderer: Renderer2, ngxSelect2ExDropdownInjectionService: NgxSelect2ExDropdownInjectionService, winRef: WindowRef);
    ngOnInit(): void;
    ngOnDestroy(): void;
    onClick(targetElement: any): void;
    resize(): void;
    private openDropdown();
    private closeDropdown();
    private setFocusForSearchField(targetElement);
    private subscribeToSearchChanges();
    private updateDropdownPosition();
    private unsubscribe();
}