import { Observable } from 'rxjs';
import { ScrollPosition } from '../model/scroll-position.model';
export interface ScrollingStrategy {
    scrollDirectionChanged(scrollPairChanged: Observable<ScrollPosition[]>): Observable<ScrollPosition[]>;
    scrollRequestZoneChanged(scrollDirectionChanged: Observable<ScrollPosition[]>): Observable<ScrollPosition[]>;
    askForUpdate(): void;
    setInitialScrollPosition(): void;
    setPreviousScrollPosition(): void;
}