import { AfterContentInit, ElementRef, OnDestroy, ViewContainerRef } from '@angular/core';
import { FocusMonitor, FocusOrigin } from '@angular/cdk/a11y';
import { Directionality } from '@angular/cdk/bidi';
import { Overlay, OverlayOutsideClickDispatcher } from '@angular/cdk/overlay';
import { GraniteContactsComponent } from '../contacts.component';
import { ClientInputInterface, ClientOutputInterface } from '../../core/client-environment';
import * as i0 from "@angular/core";
export declare class GraniteContactsTriggerForDirective implements AfterContentInit, OnDestroy {
    private _overlay;
    private _element;
    private _viewContainerRef;
    private _outsideClickDispatcher;
    /** Client input device information */
    _clientInput: ClientInputInterface;
    /** Client output device information */
    _clientOutput: ClientOutputInterface;
    private _dir;
    private _focusMonitor;
    /** References the contacts instance that the trigger is associated with. */
    contacts: GraniteContactsComponent;
    /** Whether the associated contacts is open */
    _isContactsOpen: boolean;
    private _contactsCloseSubscription;
    private _portal;
    private _overlayRef;
    constructor(_overlay: Overlay, _element: ElementRef<HTMLElement>, _viewContainerRef: ViewContainerRef, _outsideClickDispatcher: OverlayOutsideClickDispatcher, 
    /** Client input device information */
    _clientInput: ClientInputInterface, 
    /** Client output device information */
    _clientOutput: ClientOutputInterface, _dir: Directionality, _focusMonitor: FocusMonitor);
    ngAfterContentInit(): void;
    ngOnDestroy(): void;
    isOpen(): boolean;
    openContacts(): void;
    /** Toggles the contacts between the open and closed states. */
    toggleContacts(): void;
    /** Close the associated contacts */
    closeContacts(): void;
    /** Handles key presses on the trigger. */
    _handleKeydown(event: KeyboardEvent): void;
    /** Handles click events on the trigger. */
    _handleClick(): void;
    /**
     * Restores focus to the element that was focused before the contacts was open.
     */
    _restoreFocus(origin?: FocusOrigin, options?: FocusOptions): void;
    /**
     * Returns strategy for positioning the overlay for desktop devices:
     */
    private _desktopPositionStrategy;
    /**
     * Sets the appropriate positions on a position strategy
     * so the overlay connects with the trigger correctly.
     * @param positionStrategy Strategy whose position to update.
     */
    private _setPosition;
    /**
     * Returns strategy for positioning the overlay depending on what type of
     * device the contacts is being shown on
     */
    private _positionStrategy;
    /**
     * Returns strategy for positioning the overlay for touch devices:
     * Place centered in the screen.
     */
    private _touchPositionStrategy;
    static ɵfac: i0.ɵɵFactoryDeclaration<GraniteContactsTriggerForDirective, [null, null, null, null, { optional: true; }, { optional: true; }, { optional: true; }, null]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<GraniteContactsTriggerForDirective, "[graniteContactsTriggerFor]", never, { "contacts": { "alias": "graniteContactsTriggerFor"; "required": false; }; }, {}, never, never, false, never>;
}