"use client";

import { Background, ReactFlow } from "@xyflow/react";
import { ButtonEdge } from "@/components/button-edge";

const defaultNodes = [
  {
    id: "1",
    position: { x: 200, y: 200 },
    data: { label: "Node" },
  },
  {
    id: "2",
    position: { x: 500, y: 500 },
    data: { label: "Node" },
  },
];

const defaultEdges = [
  {
    id: "e1-2",
    source: "1",
    target: "2",
    type: "buttonEdge",
  },
];

const edgeTypes = {
  buttonEdge: ButtonEdge,
};

export default function Demo() {
  return (
    <div className="h-full w-full">
      <ReactFlow
        defaultNodes={defaultNodes}
        defaultEdges={defaultEdges}
        edgeTypes={edgeTypes}
        fitView
      >
        <Background />
      </ReactFlow>
    </div>
  );
}


import {
  BaseEdge,
  EdgeLabelRenderer,
  EdgeProps,
  getBezierPath,
  useReactFlow,
} from "@xyflow/react";

import { Button } from "@/components/ui/button";
import { MousePointerClick } from "lucide-react";

export function ButtonEdge({
  id,
  sourceX,
  sourceY,
  targetX,
  targetY,
  sourcePosition,
  targetPosition,
  style = {},
  markerEnd,
}: EdgeProps) {
  const [edgePath, labelX, labelY] = getBezierPath({
    sourceX,
    sourceY,
    sourcePosition,
    targetX,
    targetY,
    targetPosition,
  });

  const onEdgeClick = () => {
    window.alert(`Edge with id: ${id} has been clicked!`);
  };

  return (
    <>
      <BaseEdge path={edgePath} markerEnd={markerEnd} style={style} />
      <EdgeLabelRenderer>
        <div
          className="nodrag nopan pointer-events-auto absolute"
          style={{
            transform: `translate(-50%, -50%) translate(${labelX}px,${labelY}px)`,
          }}
        >
          <Button onClick={onEdgeClick} size="icon" variant="secondary">
            <MousePointerClick size={16} />
          </Button>
        </div>
      </EdgeLabelRenderer>
    </>
  );
}


Button Edge

Installation