/**
 * @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 { OverlayReference } from '../overlay-reference';
/** Strategy for setting the position on an overlay. */
export interface PositionStrategy {
    /** Attaches this position strategy to an overlay. */
    attach(overlayRef: OverlayReference): void;
    /** Updates the position of the overlay element. */
    apply(): void;
    /** Called when the overlay is detached. */
    detach?(): void;
    /** Cleans up any DOM modifications made by the position strategy, if necessary. */
    dispose(): void;
}