使用React JS右键单击菜单

Question

我想知道是否有最佳实践/正确方法为React组件设置右键菜单.

我目前有这个......

// nw is nw.gui from Node-Webkit
componentWillMount: function() {
    var menu = new nw.Menu();
    menu .append(new nw.MenuItem({
        label: 'doSomething',
        click: function() {
            // doSomething
        }
    }));

    // I'd like to know if this bit can be done in a cleaner/more succinct way...
    // BEGIN
    var that = this;
    addEventListener('contextmenu', function(e){
        e.preventDefault();
        // Use the attributes property to uniquely identify this react component 
        // (so different elements can have different right click menus)
        if (e.target.attributes[0].nodeValue == that.getDOMNode().attributes[0].nodeValue) {
            menu.popup(e.x, e.y);
        }
    })
    // END
},

这有效,但感觉有点乱,我想知道是否有其他方法我可以使用,任何信息将不胜感激,

谢谢!

Answer 1

更新:

想出来 - 这是你能做的

var addMenu;

componentWillMount: function() {
    addMenu = new nw.Menu();
    addMenu.append(new nw.MenuItem({
        label: 'doSomething',
        click: function() {
            // doSomething
        }
    }));
},

contextMenu: function(e) {
    e.preventDefault();
    addMenu.popup(e.clientX, e.clientY);
},

render: function(){
    return <button onClick={this.handleClick} onContextMenu={this.contextMenu}>SomethingUseful</button>
}

在渲染中,您可以将函数传递给onContextMenu,以便在此反应组件发生右键单击时.

Answer 2

弹出菜单有几点需要注意:

1. 它应该远离其父级和兄弟级 - 最好是覆盖层,这是document.body的最后一个子级
2. 特殊逻辑应该注意它始终显示在屏幕上,并且永远不会被屏幕边缘裁剪
3. 如果涉及层次结构,则子弹出窗口应与先前弹出窗口(开启者)中的项目对齐.

我创建了一个库,您可以使用它来完成所有这些:

http://dkozar.github.io/react-data-menu/

Answer 3

我在使用 Material UI 时也在寻找解决方案，所以您要做的就是首先禁用浏览器右键单击的默认行为，然后添加您想要的菜单，这是工作代码：

import React from 'react';
import { withStyles } from '@material-ui/core/styles';
import Button from '@material-ui/core/Button';
import Menu from '@material-ui/core/Menu';
import MenuItem from '@material-ui/core/MenuItem';
import ListItemIcon from '@material-ui/core/ListItemIcon';
import ListItemText from '@material-ui/core/ListItemText';
import InboxIcon from '@material-ui/icons/MoveToInbox';
import DraftsIcon from '@material-ui/icons/Drafts';
import SendIcon from '@material-ui/icons/Send';

const StyledMenu = withStyles({
  paper: {
    border: '1px solid #d3d4d5',
  },
})((props) => (
  <Menu
    elevation={0}
    getContentAnchorEl={null}
    anchorOrigin={{
      vertical: 'bottom',
      horizontal: 'center',
    }}
    transformOrigin={{
      vertical: 'top',
      horizontal: 'center',
    }}
    {...props}
  />
));

const StyledMenuItem = withStyles((theme) => ({
  root: {
    '&:focus': {
      backgroundColor: theme.palette.primary.main,
      '& .MuiListItemIcon-root, & .MuiListItemText-primary': {
        color: theme.palette.common.white,
      },
    },
  },
}))(MenuItem);

export default function CustomizedMenus() {
  const [anchorEl, setAnchorEl] = React.useState(null);

  const handleClick = (event) => {
    event.preventDefault();
    setAnchorEl(event.currentTarget);
  };

  const handleClose = () => {
    setAnchorEl(null);
  };

  return (
    <div>
      <Button
        aria-controls="customized-menu"
        aria-haspopup="true"
        variant="contained"
        color="primary"
        onContextMenu={handleClick}
      >
        Open Menu
      </Button>
      <StyledMenu
        id="customized-menu"
        anchorEl={anchorEl}
        keepMounted
        open={Boolean(anchorEl)}
        onClose={handleClose}
      >
        <StyledMenuItem>
          <ListItemIcon>
            <SendIcon fontSize="small" />
          </ListItemIcon>
          <ListItemText primary="Sent mail" />
        </StyledMenuItem>
        <StyledMenuItem>
          <ListItemIcon>
            <DraftsIcon fontSize="small" />
          </ListItemIcon>
          <ListItemText primary="Drafts" />
        </StyledMenuItem>
        <StyledMenuItem>
          <ListItemIcon>
            <InboxIcon fontSize="small" />
          </ListItemIcon>
          <ListItemText primary="Inbox" />
        </StyledMenuItem>
      </StyledMenu>
    </div>
  );
}

和沙盒项目