gnezim
32 lines
1.1 KiB
TypeScript
Executable File
32 lines
1.1 KiB
TypeScript
Executable File
/**
|
|
* @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 { ViewportRuler } from '@angular/cdk/scrolling';
|
|
/** Object holding the scroll position of something. */
|
|
interface ScrollPosition {
|
|
top: number;
|
|
left: number;
|
|
}
|
|
/** Keeps track of the scroll position and dimensions of the parents of an element. */
|
|
export declare class ParentPositionTracker {
|
|
private _document;
|
|
private _viewportRuler;
|
|
/** Cached positions of the scrollable parent elements. */
|
|
readonly positions: Map<HTMLElement | Document, {
|
|
scrollPosition: ScrollPosition;
|
|
clientRect?: ClientRect | undefined;
|
|
}>;
|
|
constructor(_document: Document, _viewportRuler: ViewportRuler);
|
|
/** Clears the cached positions. */
|
|
clear(): void;
|
|
/** Caches the positions. Should be called at the beginning of a drag sequence. */
|
|
cache(elements: readonly HTMLElement[]): void;
|
|
/** Handles scrolling while a drag is taking place. */
|
|
handleScroll(event: Event): ScrollPosition | null;
|
|
}
|
|
export {};
|