import { BlockElement, Editor } from "../interface";
export declare class DragHandler {
    private static readonly SCROLL_CRITICAL;
    private static readonly SCROLL_SPEED;
    private editor;
    private dragSnapshot;
    isDrag: boolean;
    private dragRefBlock;
    private dragBlock;
    private scrollElement;
    private scrollTimer;
    private clientX;
    private cb?;
    private isComplexBlock;
    private lock;
    private dragInterval;
    private snapshot;
    private lastPos;
    constructor(editor: Editor);
    private autoScroll;
    private clearScrollTimer;
    private removeBlockPositionMarkingLine;
    private getPreviousRealBlock;
    private showDragPosition;
    private cloneBlocksData;
    private getSnapshotRect;
    private showSnapshot;
    private createSnapshot;
    private handleDragging;
    private isCollapsedHeadingBlock;
    private getMoveIndex;
    private getAllDragBlocks;
    private getAllDragChildren;
    private clearClass;
    private handleDragEnd;
    private handleSelectsStart;
    destroy(): void;
    startDrag(e: MouseEvent, block: BlockElement, cb?: (e: BlockElement) => void): Promise<void>;
}