Hidden

Nodes and edges can be hidden by using the hidden attribute. This can be used for implementing expandable/collapsible diagrams.

import React, { useCallback, useEffect, useState } from 'react';
import {
  Background,
  ReactFlow,
  useNodesState,
  useEdgesState,
  addEdge,
  MiniMap,
  Controls,
} from '@xyflow/react';
 
import '@xyflow/react/dist/style.css';
 
 
const initialNodes = [
  {
    id: 'hidden-1',
    type: 'input',
    data: { label: 'Node 1' },
    position: { x: 250, y: 5 },
  },
  { id: 'hidden-2', data: { label: 'Node 2' }, position: { x: 100, y: 100 } },
  { id: 'hidden-3', data: { label: 'Node 3' }, position: { x: 400, y: 100 } },
  { id: 'hidden-4', data: { label: 'Node 4' }, position: { x: 400, y: 200 } },
];
 
const initialEdges = [
  { id: 'hidden-e1-2', source: 'hidden-1', target: 'hidden-2' },
  { id: 'hidden-e1-3', source: 'hidden-1', target: 'hidden-3' },
  { id: 'hidden-e3-4', source: 'hidden-3', target: 'hidden-4' },
];
 
const hide = (hidden) => (nodeOrEdge) => {
  return {
    ...nodeOrEdge,
    hidden,
  };
};
 
const HiddenFlow = () => {
  const [nodes, setNodes, onNodesChange] = useNodesState(initialNodes);
  const [edges, setEdges, onEdgesChange] = useEdgesState(initialEdges);
  const [hidden, setHidden] = useState(false);
 
  const onConnect = useCallback(
    (params) => setEdges((els) => addEdge(params, els)),
    [],
  );
 
  useEffect(() => {
    setNodes((nds) => nds.map(hide(hidden)));
    setEdges((eds) => eds.map(hide(hidden)));
  }, [hidden]);
 
  return (
    <ReactFlow
      nodes={nodes}
      edges={edges}
      onNodesChange={onNodesChange}
      onEdgesChange={onEdgesChange}
      onConnect={onConnect}
      fitView
      style={{ backgroundColor: "#F7F9FB" }}
    >
      <MiniMap />
      <Controls />
 
      <div className='isHidden__button'>
        <div>
          <label htmlFor="ishidden">
            isHidden
            <input
              id="ishidden"
              type="checkbox"
              checked={hidden}
              onChange={(event) => setHidden(event.target.checked)}
              className="react-flow__ishidden"
            />
          </label>
        </div>
      </div>
      <Background  />
    </ReactFlow>
  );
};
 
export default HiddenFlow;