/**
 * @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 { ScrollDispatcher, ViewportRuler } from 'cdk/scrolling';
import { NgZone } from '@angular/core';
import { BlockScrollStrategy } from './block-scroll-strategy';
import {
	CloseScrollStrategy,
	CloseScrollStrategyConfig,
} from './close-scroll-strategy';
import { NoopScrollStrategy } from './noop-scroll-strategy';
import {
	RepositionScrollStrategy,
	RepositionScrollStrategyConfig,
} from './reposition-scroll-strategy';
/**
 * Options for how an overlay will handle scrolling.
 *
 * Users can provide a custom value for `ScrollStrategyOptions` to replace the default
 * behaviors. This class primarily acts as a factory for ScrollStrategy instances.
 */
import * as ɵngcc0 from '@angular/core';
export declare class ScrollStrategyOptions {
	private _scrollDispatcher;
	private _viewportRuler;
	private _ngZone;
	private _document;
	constructor(
		_scrollDispatcher: ScrollDispatcher,
		_viewportRuler: ViewportRuler,
		_ngZone: NgZone,
		document: any
	);
	/** Do nothing on scroll. */
	noop: () => NoopScrollStrategy;
	/**
	 * Close the overlay as soon as the user scrolls.
	 * @param config Configuration to be used inside the scroll strategy.
	 */
	close: (
		config?: CloseScrollStrategyConfig | undefined
	) => CloseScrollStrategy;
	/** Block scrolling. */
	block: () => BlockScrollStrategy;
	/**
	 * Update the overlay's position on scroll.
	 * @param config Configuration to be used inside the scroll strategy.
	 * Allows debouncing the reposition calls.
	 */
	reposition: (
		config?: RepositionScrollStrategyConfig | undefined
	) => RepositionScrollStrategy;
	static ɵfac: ɵngcc0.ɵɵFactoryDef<ScrollStrategyOptions, never>;
}

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