如何通过单击组件中的图标来滚动和展开手风琴？

Question

我有一个组件 MainContent 及其子组件 AddMock。 MainContent 中有一个 table，它显示了一些项目列表。它对每一行都有一定的动作，比如查看和编辑，这些动作是由图标通过语义-UI 反应呈现的。通过单击每个图标，我需要向上滚动并展开手风琴。手风琴在 AddMock.

// AddMock.js
const AddMock = () => {
  return (
    <div className="row">
      <Accordion style={{ paddingLeft: "32px" }}>
        <Card className="collapseStyle">
          <Card.Header>
            <Accordion.Toggle as={Button} variant="link" eventKey="0">
              Add Mock
            </Accordion.Toggle>
          </Card.Header>
          <Accordion.Collapse eventKey="0">
            <Card.Body>
              <Container className="mockbody">
                <Header as="h3">Hierarchy</Header>
                <TabContent />
              </Container>
            </Card.Body>
          </Accordion.Collapse>
        </Card>
      </Accordion>
    </div>
  );
};

下面是MainContent.js

const MainContent = () => {
  
  return (
    <div>
      <AddMock />
      <div className="container-fluid">
        <div className="row">
          <div className="col-md-12">
            <div className="card">
              <div className="card-header card-header-info">
                <h4 className="card-title ">MOCK</h4>
              </div>
              <div className="card-body">
                <form>
                  {loading ? (
                    <div className="table-responsive">
                      <table className="table">
                        <thead>
                          <tr>
                            <th>AppName</th>
                            <th>Parent_App</th>
                            <th>Created_Date</th>
                            <th>Req_Path</th>
                            <th>Resp_Code</th>
                            <th>Resp_Content_Type</th>
                            <th>Resp_Delay</th>
                            <th>Action</th>
                          </tr>
                        </thead>
                        <tbody>
                          {data.map((routes, index) => {
                            return routes.map(contents, index);
                          })}
                        </tbody>
                      </table>
                    </div>
                  ) : (
                    <Spinner
                      animation="border"
                      style={{ marginLeft: "620px" }}
                    />
                  )}
                </form>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>
  );
};

是否可以使用 window.scrollTo() 或任何其他更好的方式在 React 中实现它？

Answer 1

使用参考

首先，我们可以有一个状态来保持活动 Accordion

的 eventKey

const [activeKey, setActiveKey] = useState("");

之后，我们为 React-Bootstrap 手风琴组件使用 ref。稍后我们需要使用 Forwarded Refs 至少将 ref 分配给 Accordion 组件的最顶层 DOM 元素，以便我们可以滚动到它。

至于图标，看看它的 onClick 事件，这只是将 activeKey 设置为 "0"，它映射到 Accordion.Collapse 组件的 eventKey。这将作为其“扩张”的触发点。

// we are going to need a ref to the Accordion element go get its position/use the scrollIntoView function
const accordElem = useRef(null);

const handleClickEdit = () => {
  setActiveKey("0"); // "0" here is as defined in your Accordion.Collapse eventKey
  accordElem.current.scrollIntoView({
    behavior: "smooth",
    block: "end",
    inline: "nearest"
  }); // initiate scroll to the "AddMock" Accordion component
};

return (
  <div>
    <AddMock
      activeKey={activeKey}
      setActiveKey={setActiveKey}
      ref={accordElem}
    />

    ...

    <Icon
      name="pencil"
      size="huge"
      style={{ cursor: "pointer" }}
      onClick={() => handleClickEdit("0")}
    />

对于滚动我们可以使用https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView. In addition, there are of course other alternatives such as scrollTo

最后，这是我们的 Accordion 组件在转发引用和利用从父状态获取的 activeKey 属性时的样子：

const AddMock = React.forwardRef((props, ref) => {
  // optional re-toggling of expanded accordion
  function handleClickToggle(eventKey) {
    if (eventKey === props.activeKey) {
      props.setActiveKey("");
    } else {
      props.setActiveKey(eventKey);
    }
  }

  return (
    <div className="row" ref={ref}>
      <Accordion style={{ paddingLeft: "32px" }} activeKey={props.activeKey}>
        <Card className="collapseStyle">
          <Card.Header>
            <Accordion.Toggle
              as={Button}
              variant="link"
              eventKey="0"
              onClick={() => handleClickToggle("0")}
            >
              Add Mock
            </Accordion.Toggle>
          </Card.Header>
          <Accordion.Collapse eventKey="0">
            <Card.Body>
              ...

代码沙盒：https://codesandbox.io/s/react-semantic-ui-react-bootstrap-3ndyl?file=/src/App.js:2444-3230

如何通过单击组件中的图标来滚动和展开手风琴？

How to scroll and expand an Accordion by onClick on an icon from a component?

javascript

twitter-bootstrap

reactjs

react-bootstrap

semantic-ui-react

使用参考