import { Overlay } from '@angular/cdk/overlay';
import { Platform } from '@angular/cdk/platform';
import { AfterViewInit, ElementRef, EventEmitter, OnChanges, OnDestroy, OnInit, Renderer2, SimpleChanges, ViewContainerRef } from '@angular/core';
import { BooleanInput, IndexableObject } from '@ui-vts-kit/ng-vts/core/types';
import { VtsDropdownMenuComponent, VtsPlacementType } from './dropdown-menu.component';
import * as i0 from "@angular/core";
export declare class VtsDropDownDirective implements AfterViewInit, OnDestroy, OnChanges, OnInit {
    elementRef: ElementRef;
    private overlay;
    private renderer;
    private viewContainerRef;
    private platform;
    static ngAcceptInputType_vtsBackdrop: BooleanInput;
    static ngAcceptInputType_vtsHasBackdrop: BooleanInput;
    static ngAcceptInputType_vtsClickHide: BooleanInput;
    static ngAcceptInputType_vtsDisabled: BooleanInput;
    static ngAcceptInputType_vtsVisible: BooleanInput;
    private portal?;
    private overlayRef;
    private destroy$;
    private positionStrategy;
    private inputVisible$;
    private vtsTrigger$;
    private overlayClose$;
    vtsDropdownMenu: VtsDropdownMenuComponent | null;
    vtsTrigger: 'click' | 'hover';
    vtsMatchWidthElement: ElementRef | null;
    /**
     * @deprecated Not supported, use `vtsHasBackDrop` instead.
     * @breaking-change 12.0.0
     */
    vtsBackdrop: boolean;
    vtsHasBackdrop: boolean;
    vtsClickHide: boolean;
    vtsDisabled: boolean;
    vtsVisible: boolean;
    vtsOverlayClassName: string;
    vtsOverlayStyle: IndexableObject;
    vtsPlacement: VtsPlacementType;
    readonly vtsVisibleChange: EventEmitter<boolean>;
    setDropdownMenuValue<T extends keyof VtsDropdownMenuComponent>(key: T, value: VtsDropdownMenuComponent[T]): void;
    constructor(elementRef: ElementRef, overlay: Overlay, renderer: Renderer2, viewContainerRef: ViewContainerRef, platform: Platform);
    ngOnInit(): void;
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    ngOnChanges(changes: SimpleChanges): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<VtsDropDownDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<VtsDropDownDirective, "[vts-dropdown]", ["vtsDropdown"], { "vtsDropdownMenu": { "alias": "vtsDropdownMenu"; "required": false; }; "vtsTrigger": { "alias": "vtsTrigger"; "required": false; }; "vtsMatchWidthElement": { "alias": "vtsMatchWidthElement"; "required": false; }; "vtsBackdrop": { "alias": "vtsBackdrop"; "required": false; }; "vtsHasBackdrop": { "alias": "vtsHasBackdrop"; "required": false; }; "vtsClickHide": { "alias": "vtsClickHide"; "required": false; }; "vtsDisabled": { "alias": "vtsDisabled"; "required": false; }; "vtsVisible": { "alias": "vtsVisible"; "required": false; }; "vtsOverlayClassName": { "alias": "vtsOverlayClassName"; "required": false; }; "vtsOverlayStyle": { "alias": "vtsOverlayStyle"; "required": false; }; "vtsPlacement": { "alias": "vtsPlacement"; "required": false; }; }, { "vtsVisibleChange": "vtsVisibleChange"; }, never, never, false, never>;
}