Material UI Tabs no selected tab - material-ui

Question

I'm trying to use Material UI Tabs for navigation. However, there are routes in my application that match none of the tabs. When I pass a value to the Tabs component that does not match any of the child tab values, I get a warning about an invalid value.
I created a hidden tab will a value of null as a work-around.
Is it possible to disable this warning about an invalid tab value?
Can tabs in Material UI have no selection?
Thanks

Answer 1

The value of the currently selected Tab. If you don't want any selected Tab, you can set this property to false.
From: https://material-ui.com/api/tabs/
What I ended up doing is creating a switch statement with valid tab values, and if windows.location.pathname doesn't match any of them have the default return false.
Example Routes:
class Routes extends Component {
render() {
return (
<Switch>
<Route path={'/test2'} component={Test2} />
<Route path={'/test3'} component={Test3} />
<Route exact path={'/'} component={Test} />
</Switch>
);
}
}
Example NavBar:
checkPathnameValue() {
const { pathname } = window.location;
switch (pathname) {
case '/test2':
case '/test3':
break;
default:
return false;
}
return pathname;
}
render() {
const { classes } = this.props;
const tabValue = this.checkPathnameValue();
return (
<div className={classes.root}>
<AppBar position={'static'}>
<Toolbar>
<Tabs value={tabValue}>
<Tab
label={'Test 2'}
value={'/test2'}
to={'/test2'}
component={Link}
/>
<Tab
label={'Test 3'}
value={'/test3'}
to={'/test3'}
component={Link}
/>
</Tabs>
</Toolbar>
</AppBar>
</div>
);
}

Answer 2

Seems like setting the value property of Tabs to false will not show any warning and will deselect all the tabs correctly.
Philip's solution works perfectly, here I am just removing the need for the switch case.
In my case, I only had one tab (Login) where I wanted no tab to be selected since it is a button rather than a tab.
Here's what I did to solve this:
<Tabs value={this.state.content !== "login" ? this.state.content : false} onChange={(event, newValue) => { this.setState({content: newValue}) }}>
<Tab value="home" label="Home" wrapped />
<Tab value="tab1" label="Tab 1" />
<Tab value="tab2" label="Tab 2" />
</Tabs>
on another part of my AppBar I had a Login button:
<Button onClick={(event, newValue) => { this.setState({content: "login"}) }}>Login</Button >
Similarly to Philips's answer, the key is in {this.state.content !== "login" ? this.state.content : false} which prevents Tabs from being rendered with "login" value. Instead, it is given the value "false" which is allowed and does not invoke the warning.

Answer 3

I also experienced this issue a while back and follow the same pattern.
E.g.,
return <Tabbar value={value ?? false} onChange={(event: React.ChangeEvent<{}>, value: any) => onChange(value)}>{tabs}</Tabbar>

Answer 4

Toggle Effect
To get a toggle effect the listener will need to be placed on the individual <Tab onClick/> events as <Tabs onChange> will not trigger when clicking the same button multiple times.
const Container = ()=>{
const [currentTab,setCurrentTab] = React.useState<string|false>('a')
const handleChange = (val: string) =>
setCurrentTab(val === currentTab ? false : val)
return <Tabs value={currentTab}>
<Tab value='a' label='a' onClick={()=>handleChange('a')}/>
<Tab value='b' label='b' onClick={()=>handleChange('b')}/>
</Tabs>
}