Button

import { Graph } from '@antv/x6'

const graph = new Graph({
  container: document.getElementById('container'),
  grid: true,
})

graph.addEdge({
  source: { x: 40, y: 40 },
  target: { x: 380, y: 40 },
  vertices: [
    { x: 40, y: 80 },
    { x: 200, y: 80 },
    { x: 200, y: 40 },
  ],
  attrs: {
    line: {
      stroke: '#3c4260',
      strokeWidth: 2,
      targetMarker: 'classic',
    },
  },
  tools: [
    {
      name: 'button',
      args: {
        markup: [
          {
            tagName: 'circle',
            selector: 'button',
            attrs: {
              r: 18,
              stroke: '#fe854f',
              strokeWidth: 2,
              fill: 'white',
              cursor: 'pointer',
            },
          },
          {
            tagName: 'text',
            textContent: 'Btn B',
            selector: 'icon',
            attrs: {
              fill: '#fe854f',
              fontSize: 10,
              textAnchor: 'middle',
              pointerEvents: 'none',
              y: '0.3em',
            },
          },
        ],
        distance: -40,
        onClick({ view }: any) {
          const edge = view.cell
          const source = edge.getSource()
          const target = edge.getTarget()
          edge.setSource(target)
          edge.setTarget(source)
        },
      },
    },
  ],
})

graph.addEdge({
  source: { x: 40, y: 160 },
  target: { x: 380, y: 160 },
  vertices: [
    { x: 40, y: 200 },
    { x: 200, y: 200 },
    { x: 200, y: 160 },
  ],
  attrs: {
    line: {
      stroke: '#3c4260',
      strokeWidth: 2,
      targetMarker: 'classic',
    },
  },
  connector: 'smooth',
  tools: {
    name: 'button',
    args: {
      markup: [
        {
          tagName: 'circle',
          selector: 'button',
          attrs: {
            r: 18,
            stroke: '#fe854f',
            strokeWidth: 2,
            fill: 'white',
            cursor: 'pointer',
          },
        },
        {
          tagName: 'text',
          textContent: 'Btn A',
          selector: 'icon',
          attrs: {
            fill: '#fe854f',
            fontSize: 10,
            textAnchor: 'middle',
            pointerEvents: 'none',
            y: '0.3em',
          },
        },
      ],
      distance: -100,
      offset: { x: 0, y: 0 },
      onClick({ view }: any) {
        const edge = view.cell
        edge.attr({
          line: {
            strokeDasharray: '5, 10',
            strokeDashoffset: (edge.attr('line/strokeDashoffset') | 0) + 20,
          },
        })
      },
    },
  },
})