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currently I am working on a project with React and Material UI. I want to hover on tabs that will open an menu, but this doesn't really work. I am hoping that you guys can help me (and maybe tell me if I'm approaching this correctly)
Where my tabs are basing of: .jpg
My current project: .jpg
AppBarTop class
class AppBarTop extends Component {
state = {
value: 0,
open: false,
anchorEl: null
};
handleMenuClick = (index) => {
}
handleMenuOpen = (index, event) => {
const {currentTarget} = event;
this.setState({
open: !this.state.open,
anchorEl: currentTarget,
value: index
})
};
handleMenuClose = () => {
this.setState({
open: false,
anchorEl: null,
})
}
handleInputSearch = () => {
};
render() {
const {classes} = this.props;
const {anchorEl, open} = this.state;
return (
<div className={classes.root}>
<AppBar position="static">
<Toolbar>
<img src={buddies} alt={"buddies"} height={50} width={50}/>
<div className={classes.grow}/>
<div className={classes.search}>
<div className={classes.searchIcon}>
<SearchIcon/>
</div>
<InputBase
placeholder="Search…"
onChange={this.handleInputSearch}
classes={{
root: classes.inputRoot,
input: classes.inputInput
}}
/>
</div>
<div className={classes.grow}/>
<List>
{TopMenu.map((item, index) => (
<Tab key={index} ponent={Link} to={{pathname: item.pathname}}
classes={{root: classes.tabItem}} label={item.label}/>
))}
</List>
</Toolbar>
<Paper className={classes.grow}>
<Tabs
value={this.state.value}
indicatorColor="primary"
textColor="primary"
centered>
{BottomMenu.map((item, index) => (
<Tab
key={index}
onMouseOver={this.handleMenuOpen.bind(this, index)}
data-key={index}
classes={{root: classes.tabItem}}
label={item.label}
aria-owns={open ? 'menu-list-grow' : undefined}
aria-haspopup={"true"}/>
))}
</Tabs>
<Popper open={open} anchorEl={anchorEl} id="menu-list-grow">
<Paper>
<MenuList>
{BottomMenu[this.state.value].items.map((item, index) => (
<MenuItem key={index} onClick={this.handleMenuClose}>{item}</MenuItem>
))}
</MenuList>
</Paper>
</Popper>
</Paper>
</AppBar>
</div>
);
}
}
export default withStyles(styles)(AppBarTop)
currently I am working on a project with React and Material UI. I want to hover on tabs that will open an menu, but this doesn't really work. I am hoping that you guys can help me (and maybe tell me if I'm approaching this correctly)
Where my tabs are basing of: https://i.sstatic/jVlIm.jpg
My current project: https://i.sstatic/sIJzq.jpg
AppBarTop class
class AppBarTop extends Component {
state = {
value: 0,
open: false,
anchorEl: null
};
handleMenuClick = (index) => {
}
handleMenuOpen = (index, event) => {
const {currentTarget} = event;
this.setState({
open: !this.state.open,
anchorEl: currentTarget,
value: index
})
};
handleMenuClose = () => {
this.setState({
open: false,
anchorEl: null,
})
}
handleInputSearch = () => {
};
render() {
const {classes} = this.props;
const {anchorEl, open} = this.state;
return (
<div className={classes.root}>
<AppBar position="static">
<Toolbar>
<img src={buddies} alt={"buddies"} height={50} width={50}/>
<div className={classes.grow}/>
<div className={classes.search}>
<div className={classes.searchIcon}>
<SearchIcon/>
</div>
<InputBase
placeholder="Search…"
onChange={this.handleInputSearch}
classes={{
root: classes.inputRoot,
input: classes.inputInput
}}
/>
</div>
<div className={classes.grow}/>
<List>
{TopMenu.map((item, index) => (
<Tab key={index} ponent={Link} to={{pathname: item.pathname}}
classes={{root: classes.tabItem}} label={item.label}/>
))}
</List>
</Toolbar>
<Paper className={classes.grow}>
<Tabs
value={this.state.value}
indicatorColor="primary"
textColor="primary"
centered>
{BottomMenu.map((item, index) => (
<Tab
key={index}
onMouseOver={this.handleMenuOpen.bind(this, index)}
data-key={index}
classes={{root: classes.tabItem}}
label={item.label}
aria-owns={open ? 'menu-list-grow' : undefined}
aria-haspopup={"true"}/>
))}
</Tabs>
<Popper open={open} anchorEl={anchorEl} id="menu-list-grow">
<Paper>
<MenuList>
{BottomMenu[this.state.value].items.map((item, index) => (
<MenuItem key={index} onClick={this.handleMenuClose}>{item}</MenuItem>
))}
</MenuList>
</Paper>
</Popper>
</Paper>
</AppBar>
</div>
);
}
}
export default withStyles(styles)(AppBarTop)
1 Answer
Reset to default 7The key problem here is that the onMouseOver event handler is fired multiple times as you move around the <Tab> ponent. Your handleMenuOpen function is not built to handle this.
I've replicated your issue in a CodeSandbox here: https://codesandbox.io/s/qkw8rr4mk4
The following 3 points will fix your menu issues:
- Change
handleMenuOpento be functional by explicitly settingopen: true - Use
onMouseEnterrather thanonMouseOver. This is not required but it makes for more predictable functionality asonMouseEnteris only called once - To automatically close your menu when your mouse leaves them add the
onMouseLeave={this.handleMenuClose.bind(this)}property to your parent<div>ponent
A CodeSandbox with the above 3 points implemented can be found at: https://codesandbox.io/s/6x9w9m6n7r
本文标签： javascriptMaterial UIReact hovering on tabs will not open and close properlyStack Overflow
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