import { DraggableDirective } from '../../directives/draggable.directive';
import { ɵDragStrategyEnum } from '../../enums';
import { DragInfo } from '../../interfaces';
import { DragStrategyType } from '../../types';
/** @internal */
export declare abstract class ɵBaseDragStrategyImpl {
    protected readonly context: DraggableDirective;
    readonly type: ɵDragStrategyEnum | undefined;
    protected mouseDownEvent: PointerEvent | TouchEvent;
    protected shiftX: number;
    protected shiftY: number;
    protected config?: DragStrategyType;
    constructor(context: DraggableDirective);
    /** 鼠标按下操作 */
    registerMouseDown({ originalEvent: mouseEvent, movableElement }: DragInfo): void;
    private setShiftX;
    private setShiftY;
    abstract updateElementPosition(event: PointerEvent | TouchEvent): void;
}