import { type DragRef } from '../dragRef';
import { Delta, Orientation } from '../type';
export interface DragDropListStrategy<T> {
    start(items: readonly T[]): void;
    sort(item: T, pointerX: number, pointerY: number, pointerDelta: Delta): {
        previousIndex: number;
        currentIndex: number;
    } | null;
    enter(item: T, pointerX: number, pointerY: number, index?: number): void;
    reset(): void;
    getItemIndex(item: T): number;
    withItems(items: T[]): void;
    updateOnScroll(top: number, left: number): void;
    getActiveItemsSnapshot(): readonly T[];
}
export declare class DefaultDragDropListStrategy<T extends DragRef> implements DragDropListStrategy<T> {
    rootElement: HTMLElement;
    private registry;
    private previousSwapItem;
    private itemsPosition;
    private activeDrags;
    orientation: Orientation;
    constructor(rootElement: HTMLElement);
    start(items: readonly T[]): void;
    sort(item: T, pointerX: number, pointerY: number, pointerDelta: Delta): {
        previousIndex: number;
        currentIndex: number;
    } | null;
    enter(item: T, pointerX: number, pointerY: number, index?: number | undefined): void;
    reset(): void;
    getItemIndex(item: T): number;
    /**
     *
     * @param items
     *
     * @internal
     */
    withItems(items: T[]): void;
    updateOnScroll(top: number, left: number): void;
    getActiveItemsSnapshot(): readonly T[];
    private cacheItemsPositions;
    private getItemOffset;
    private getSiblingOffset;
    private getIndexFromPosition;
    private enterIsFirstChild;
}
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