x6 react 最佳实际
提供一个react下应用X6的最佳范本:
- 简略易用,易于做逻辑拆分
- 体积小(gzip压缩后小于0.5k)
- 反对多实例
- 反对应用ref绑定x6 graph
装置
npm install react-x6-graphyarn add react-x6-graph
设计
定义画布组件
// 应用GraphContext存储理论的x6 graph对象const GraphContext = createContext()// 导出一个Graph组件,反对父组件传递ref拿到graph对象export const Graph = forwardRef((props, ref) => { const [graph, setGraph] = useState(null) const realRef = ref || createRef() const { container, children, ...other } = props // 如果传递了container,就应用传进来的container初始化画布 // 否则组件本人渲染一个div来初始化画布 const containerRef = createRef(container) useEffect(() => { if (containerRef.current && !realRef.current) { const graph = new X6.Graph({ container: containerRef.current, ...other, }) setGraph(realRef.current = graph) } }, []) return ( <GraphContext.Provider value={graph}> {containerRef.current ? null : <div ref={containerRef} />} {!!graph && children} </GraphContext.Provider> )})// 导出一个帮忙函数以便Graph组件的子组件获取x6 graph对象export const useGraphInstance = () => useContext(GraphContext)
应用
import { Graph, useGraphInstance } from 'react-x6-graph'const GraphBehavior = () => { const graph = useGraphInstance() // TODO 这里拿到graph对象解决本人的逻辑(例如应用后端数据初始化画布,减少事件监听...) return null}const GraphAddButton = () => { const graph = useGraphInstance() const [count, setCount] = useState(0) const addNode = useCallback(() => { // TODO 点击的时候增加节点并计数 }, [count, graph]) return <Button type="primary">增加节点: {count}</Button>}function App() { const gRef = useRef() useEffect(() => { // TODO 这里应用父组件的ref不便将gRef传递到与Graph以外的组件应用 console.log('ref', gRef) }, [gRef.current]) return ( <div className="App"> <Graph grid resizing snapline keyboard clipboard width={800} height={600}> <GraphBehavior /> <GraphAddButton /> </Graph> {/* 1. Graph组件反对多实例;2. 父组件传递ref */} <Graph grid width={800} height={600} ref={gRef}> <GraphAddButton /> </Graph> </div> );}
TODO
- [ ] 应用react自定义组件(默认应用Portal)
- [ ] 用这个封装的Graph实现官网流程图(或者间接实现xflow的流程图)