import { Node, Edge, Connection, ViewportHelperFunctions } from "reactflow";
import dagre from "dagre";
import { UpdateStepType } from "../hooks/useBaseFlow";
import { MagicFlow } from "../types/flow";
export declare const Ranksep = 100;
export declare const Nodesep = 100;
export declare function getNodeCenter(node: Node): {
    x: number;
    y: number;
};
export declare function getEdgeHandlePosition(sourceNode: Node, targetNode: Node): {
    sx: number;
    sy: number;
    tx: number;
    ty: number;
};
export declare const getAllPredecessors: (curNode: MagicFlow.Node, nodes: Node[], edges: Edge[], predecessors?: MagicFlow.Node[]) => MagicFlow.Node[];
export declare const getAllPostNodes: (curNode: MagicFlow.Node, nodes: MagicFlow.Node[], edges: Edge[], postNodes?: MagicFlow.Node[]) => MagicFlow.Node[];
export declare function sortByEdges(nodes: MagicFlow.Node[], edges: Edge[]): MagicFlow.Node[];
/** 进行dagre实际布局 */
export declare const dagreLayout: (direction: string, nodes: MagicFlow.Node[], edges: Edge[]) => dagre.graphlib.Graph<{}>;
export declare const getLayoutElements: (_nodes: MagicFlow.Node[], _edges: Edge[], direction: string, paramsName: MagicFlow.ParamsName) => {
    nodes: MagicFlow.Node[];
    edges: Edge[];
};
/**
 * 更新步骤数据
 * @type {*}  类型，通过连线还是删除连线
 * @connection {*} 当前连线
 * @nodeConfig {*} 节点配置
 * @returns
 */
type UpdateTargetNodesStepProps = {
    type: UpdateStepType;
    connection: Connection | Edge;
    nodeConfig: Record<string, MagicFlow.Node>;
    nodes: MagicFlow.Node[];
    edges: Edge[];
    beforeStep?: number;
};
export declare const updateTargetNodesStep: ({ type, connection, nodeConfig, nodes, edges, beforeStep }: UpdateTargetNodesStepProps) => void;
/**
 * 校验是否存在执行节点不在流程运行范围内（如果有节点不会被执行，则会做提示）
 */
export declare const checkHasNodeOutOfFlow: (nodes: MagicFlow.Node[], edges: Edge[]) => boolean;
/** 计算所有节点的中点 */
export declare const calculateMidpoint: (nodes: MagicFlow.Node[]) => {
    x: number;
    y: number;
};
/** 在分组内新增节点时，获取节点的实际渲染坐标 */
export declare const getSubNodePosition: (event: any, screenToFlowPosition: ViewportHelperFunctions['screenToFlowPosition'], parentNode: MagicFlow.Node) => {
    x: number;
    y: number;
};
/**
 * 生成拷贝后的节点和边
 * @param nodeConfig 当前节点完整配置
 * @param selectionNodes 选中的节点
 * @param selectionEdges 选中的边
 * @param paramsName 自定义字段
 * @returns
 */
export declare const generatePasteNodesAndEdges: (nodeConfig: Record<string, MagicFlow.Node>, selectionNodes: MagicFlow.Node[], selectionEdges: Edge[], paramsName: MagicFlow.ParamsName) => {
    pasteEdges: Edge[];
    pasteNodes: MagicFlow.Node[];
};
export {};