为扩展面板启用复制粘贴

debugcn 发表于 Dev

克莱门特·蒙托瓦斯（Clement Montois）

我正在尝试使用Material-UI中的ExpansionPanel组件，但是我试图弄清楚如何启用在ExpansionPanelSummary上选择文本，以便用户可以在摘要中复制/粘贴文本。

瑞安·科格斯威尔（Ryan Cogswell）

ExpansionPanelSummary利用ButtonBase作为其根组件。这意味着它将整个摘要视为一个按钮来控制展开/折叠。

中的CSSButtonBase 指定userSelect: 'none'了禁用元素中文本的选择。

下面的示例显示了一种覆盖此方法：

import React from "react";
import { makeStyles } from "@material-ui/core/styles";
import ExpansionPanel from "@material-ui/core/ExpansionPanel";
import ExpansionPanelSummary from "@material-ui/core/ExpansionPanelSummary";
import ExpansionPanelDetails from "@material-ui/core/ExpansionPanelDetails";
import Typography from "@material-ui/core/Typography";
import ExpandMoreIcon from "@material-ui/icons/ExpandMore";

const useStyles = makeStyles(theme => ({
  root: {
    width: "100%",
    "& .MuiExpansionPanelSummary-root": {
      userSelect: "auto"
    }
  },
  heading: {
    fontSize: theme.typography.pxToRem(15),
    fontWeight: theme.typography.fontWeightRegular
  }
}));

export default function SimpleExpansionPanel() {
  const classes = useStyles();

  return (
    <div className={classes.root}>
      <ExpansionPanel>
        <ExpansionPanelSummary
          expandIcon={<ExpandMoreIcon />}
          aria-controls="panel1a-content"
          id="panel1a-header"
        >
          <Typography className={classes.heading}>Expansion Panel 1</Typography>
        </ExpansionPanelSummary>
        <ExpansionPanelDetails>
          <Typography>
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse
            malesuada lacus ex, sit amet blandit leo lobortis eget.
          </Typography>
        </ExpansionPanelDetails>
      </ExpansionPanel>
      <ExpansionPanel>
        <ExpansionPanelSummary
          expandIcon={<ExpandMoreIcon />}
          aria-controls="panel2a-content"
          id="panel2a-header"
        >
          <Typography className={classes.heading}>Expansion Panel 2</Typography>
        </ExpansionPanelSummary>
        <ExpansionPanelDetails>
          <Typography>
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse
            malesuada lacus ex, sit amet blandit leo lobortis eget.
          </Typography>
        </ExpansionPanelDetails>
      </ExpansionPanel>
      <ExpansionPanel disabled>
        <ExpansionPanelSummary
          expandIcon={<ExpandMoreIcon />}
          aria-controls="panel3a-content"
          id="panel3a-header"
        >
          <Typography className={classes.heading}>
            Disabled Expansion Panel
          </Typography>
        </ExpansionPanelSummary>
      </ExpansionPanel>
    </div>
  );
}