79 lines
2.2 KiB
TypeScript
79 lines
2.2 KiB
TypeScript
import { MouseEvent as ReactMouseEvent, FC } from 'react';
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import ReactFlow, {
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addEdge,
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Handle,
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Connection,
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Position,
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Node,
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Edge,
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OnConnectStartParams,
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NodeProps,
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NodeTypes,
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useNodesState,
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useEdgesState,
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} from 'react-flow-renderer';
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import './validation.css';
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const initialNodes: Node[] = [
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{ id: '0', type: 'custominput', position: { x: 0, y: 150 }, data: null },
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{ id: 'A', type: 'customnode', position: { x: 250, y: 0 }, data: null },
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{ id: 'B', type: 'customnode', position: { x: 250, y: 150 }, data: null },
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{ id: 'C', type: 'customnode', position: { x: 250, y: 300 }, data: null },
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];
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const isValidConnection = (connection: Connection) => connection.target === 'B';
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const onConnectStart = (_: ReactMouseEvent, { nodeId, handleType }: OnConnectStartParams) =>
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console.log('on connect start', { nodeId, handleType });
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const onConnectStop = (event: MouseEvent) => console.log('on connect stop', event);
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const onConnectEnd = (event: MouseEvent) => console.log('on connect end', event);
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const CustomInput: FC<NodeProps> = () => (
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<>
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<div>Only connectable with B</div>
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<Handle type="source" position={Position.Right} isValidConnection={isValidConnection} />
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</>
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);
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const CustomNode: FC<NodeProps> = ({ id }) => (
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<>
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<Handle type="target" position={Position.Left} isValidConnection={isValidConnection} />
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<div>{id}</div>
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<Handle type="source" position={Position.Right} isValidConnection={isValidConnection} />
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</>
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);
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const nodeTypes: NodeTypes = {
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custominput: CustomInput,
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customnode: CustomNode,
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};
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const ValidationFlow = () => {
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const [nodes, , onNodesChange] = useNodesState(initialNodes);
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const [edges, setEdges, onEdgesChange] = useEdgesState([]);
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const onConnect = (params: Connection | Edge) => {
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console.log('on connect', params);
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setEdges((eds) => addEdge(params, eds));
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};
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return (
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<ReactFlow
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nodes={nodes}
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edges={edges}
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onNodesChange={onNodesChange}
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onEdgesChange={onEdgesChange}
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onConnect={onConnect}
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selectNodesOnDrag={false}
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className="validationflow"
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nodeTypes={nodeTypes}
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onConnectStart={onConnectStart}
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onConnectStop={onConnectStop}
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onConnectEnd={onConnectEnd}
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fitView
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/>
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);
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};
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export default ValidationFlow;
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