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25 lines
1.0 KiB
25 lines
1.0 KiB
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import { OverlayReference } from '../overlay-reference';
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/**
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* Describes a strategy that will be used by an overlay to handle scroll events while it is open.
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*/
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export interface ScrollStrategy {
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/** Enable this scroll strategy (called when the attached overlay is attached to a portal). */
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enable: () => void;
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/** Disable this scroll strategy (called when the attached overlay is detached from a portal). */
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disable: () => void;
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/** Attaches this `ScrollStrategy` to an overlay. */
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attach: (overlayRef: OverlayReference) => void;
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/** Detaches the scroll strategy from the current overlay. */
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detach?: () => void;
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}
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/**
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* Returns an error to be thrown when attempting to attach an already-attached scroll strategy.
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*/
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export declare function getMatScrollStrategyAlreadyAttachedError(): Error;
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