/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { Directionality } from 'cdk/bidi';
import { Location } from '@angular/common';
import { ComponentFactoryResolver, Injector, NgZone } from '@angular/core';
import { OverlayKeyboardDispatcher } from './dispatchers/overlay-keyboard-dispatcher';
import { OverlayOutsideClickDispatcher } from './dispatchers/overlay-outside-click-dispatcher';
import { OverlayConfig } from './overlay-config';
import { OverlayContainer } from './overlay-container';
import { OverlayRef } from './overlay-ref';
import { OverlayPositionBuilder } from './position/overlay-position-builder';
import { ScrollStrategyOptions } from './scroll/index';
/**
 * Service to create Overlays. Overlays are dynamically added pieces of floating UI, meant to be
 * used as a low-level building block for other components. Dialogs, tooltips, menus,
 * selects, etc. can all be built using overlays. The service should primarily be used by authors
 * of re-usable components rather than developers building end-user applications.
 *
 * An overlay *is* a PortalOutlet, so any kind of Portal can be loaded into one.
 */
import * as ɵngcc0 from '@angular/core';
export declare class Overlay {
	/** Scrolling strategies that can be used when creating an overlay. */
	scrollStrategies: ScrollStrategyOptions;
	private _overlayContainer;
	private _componentFactoryResolver;
	private _positionBuilder;
	private _keyboardDispatcher;
	private _injector;
	private _ngZone;
	private _document;
	private _directionality;
	private _location;
	private _outsideClickDispatcher;
	private _appRef;
	constructor(
		/** Scrolling strategies that can be used when creating an overlay. */
		scrollStrategies: ScrollStrategyOptions,
		_overlayContainer: OverlayContainer,
		_componentFactoryResolver: ComponentFactoryResolver,
		_positionBuilder: OverlayPositionBuilder,
		_keyboardDispatcher: OverlayKeyboardDispatcher,
		_injector: Injector,
		_ngZone: NgZone,
		_document: any,
		_directionality: Directionality,
		_location: Location,
		_outsideClickDispatcher: OverlayOutsideClickDispatcher
	);
	/**
	 * Creates an overlay.
	 * @param config Configuration applied to the overlay.
	 * @returns Reference to the created overlay.
	 */
	create(config?: OverlayConfig): OverlayRef;
	/**
	 * Gets a position builder that can be used, via fluent API,
	 * to construct and configure a position strategy.
	 * @returns An overlay position builder.
	 */
	position(): OverlayPositionBuilder;
	/**
	 * Creates the DOM element for an overlay and appends it to the overlay container.
	 * @returns Newly-created pane element
	 */
	private _createPaneElement;
	/**
	 * Creates the host element that wraps around an overlay
	 * and can be used for advanced positioning.
	 * @returns Newly-create host element.
	 */
	private _createHostElement;
	/**
	 * Create a DomPortalOutlet into which the overlay content can be loaded.
	 * @param pane The DOM element to turn into a portal outlet.
	 * @returns A portal outlet for the given DOM element.
	 */
	private _createPortalOutlet;
	static ɵfac: ɵngcc0.ɵɵFactoryDef<Overlay, never>;
	static ɵprov: ɵngcc0.ɵɵInjectableDef<Overlay>;
}

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