import { OnDestroy, OnInit } from '@angular/core';
import { Subject } from 'rxjs/Subject';
import 'rxjs/add/operator/takeUntil';
import { SkyPopoverAlignment, SkyPopoverTrigger } from '../popover';
import { SkyWindowRefService } from '../window';
import { SkyDropdownMessage, SkyDropdownTriggerType } from './types';
export declare class SkyDropdownComponent implements OnInit, OnDestroy {
    private windowRef;
    alignment: SkyPopoverAlignment;
    buttonStyle: string;
    buttonType: string;
    label: string;
    dismissOnBlur: boolean;
    messageStream: Subject<SkyDropdownMessage>;
    title: string;
    trigger: SkyDropdownTriggerType;
    private triggerButton;
    private popover;
    private ngUnsubscribe;
    private isKeyboardActive;
    private isOpen;
    private _buttonType;
    private _buttonStyle;
    private _label;
    private _trigger;
    constructor(windowRef: SkyWindowRefService);
    ngOnInit(): void;
    ngOnDestroy(): void;
    onKeyDown(event: KeyboardEvent): void;
    onPopoverOpened(): void;
    onPopoverClosed(): void;
    getPopoverTriggerType(): SkyPopoverTrigger;
    private handleIncomingMessages(message);
    private sendMessage(type);
    private positionPopover();
}