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@s7n/react-mounter

v1.0.3

Published

react-mounter is a separate component mounting approach in the React system

Downloads

1

Readme

ENGLISH | 中文文档

React Mounter

React Mounter 是基于 React 体系的一种分离式组件挂载方案。

它可以有效地解决组件挂载受到组件层级结构限制的问题,其能力有点类似于 createPortal 但是它的语法更加简洁。

npm version npm downloads

安装

@s7n/react-mounter 安装为依赖,就可以在你的 React App 中使用了:

# If you use npm:
npm install @s7n/react-mounter 

# If you use yarn:
yarn add @s7n/react-mounter

使用

MountProvider 组件下声明要被挂载的内容, 然后其内容就会被渲染到相同 name 的 MountConsumer 组件下。

function Header() {
  return (
    <div>
      <span>Welcome</span>
      <MountConsumer name="header-action" />  
    </div>
  )
}

function Content() {
  function onClick() {
    // do something ...
  }

  return (
    <div>
      <MountProvider name="header-action">
        <Button onClick={onClick}>Content Action</Button>
      </MountProvider>
    </div>
  )
}

function App() {
  return (
    <div>
      <Header />
      <Content />
    </div>
  )
}

更多用法请参考 API 和 DEMO

API

MountProvider

| 属性 | 类型 | 默认值 | 描述 | | --- | --- | --- | --- | | name | string | | 挂载点标识:其 children 会被挂载到同名的 MountConsumer 下 | | visible? | boolean | ((param?: object) => boolean) | true | 控制其内容是否挂载。当前为 Function 时,param 通过 MountConsumer 传递 | | children? | ReactNode | ((param?: object) => ReactNode) | null | ReactNode 或者接收 param 为参数的 Function,并返回 ReactNode |

MountConsumer

| 属性 | 类型 | 默认值 | 描述 | | --- | --- | --- | --- | | name | string | | 挂载点标识:其会挂载渲染同名 MountProvider 提供的 ReactNode | | param? | any | | 会传递给 MountProvider 中 visible 和 children 的参数 | | children? | ((views: ReactNode[]) => ReactNode) | | 接收所有挂载视图,并返回 ReactNode | | fallback? | ReactNode | null | 当没有任何组件挂载时的默认渲染UI |

DEMO

通过 param 传递参数,通过 visible 控制组件是否渲染

function Header() {
  const [value, setValue] = useState(10);

  return (
    <div>
      <MountConsumer 
        name="header-action" 
        param={{ value }}
      />
    </div>
  )
}

function Content() {
  return (
    <div>
      <MountProvider 
        name="header-action"
        visible={(param: any) => param && param.value % 2 === 0}
      >
        {
          (param: any) => {
            if (param?.value !== undefined) {
              return <h1>current value is: {param.value}</h1>
            }

            return <h1>Nothing</h1>
          } 
        }
      </MountProvider>
    </div>
  )
}

设计灵感

设计灵感来自于 DevExtreme Reactive 中的 TemplateTemplatePlaceholder 的使用方式。

关于 “简洁架构之组件的分离式挂载” 的内容,可以翻阅这篇文章。

createPortal 的区别

我们不必在需要知道目标的 DOM ,而是可以通过指定一致的 “name” 即可将 MountProvider 下的结构提供给 MountConsumer 渲染。

在应用中实现模块UI的解耦和注入方面有着非常好的效果。