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Custom Edges

If you want to introduce a new edge type you can pass an edgeTypes object to the ReactFlow component:

function Flow({ nodes, edges }) {
const edgeTypes = useMemo(() => ({ special: CustomEdgeComponent }), []);

return <ReactFlow edgeTypes={edgeTypes} nodes={nodes} edges={edges} />;
}

Now you can use the new type special for an edge. The straight, default and step types would still be available unless you overwrote one of them. There is an implementation of a custom edge in the custom edge example.

Prop Types

Custom edges are wrapped. They receive the following props:

  • source: string (node id)
  • target: string (node id)
  • selected: boolean
  • animated: boolean
  • label: string
  • labelStyle: svg attributes
  • labelShowBg: boolean
  • labelBgStyle: svg attributes
  • labelBgPadding: number
  • labelBgBorderRadius: number
  • data: object
  • style: svg attributes
  • arrowHeadType: 'arrow' | 'arrowclosed'
  • sourceX: number
  • sourceY: number
  • targetX: number
  • targetY: number
  • sourcePosition: 'left' | 'top' | 'right' | 'bottom'
  • targetPosition: 'left' | 'top' | 'right' | 'bottom'
  • markerStart: string or marker config
  • markerEnd: string or marker config