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import React from 'react';
import { Link, useLocation } from 'react-router-dom';
import AppBar from '@material-ui/core/AppBar';
import Tab, { TabProps } from '@material-ui/core/Tab';
import Tabs from '@material-ui/core/Tabs';
import Toolbar from '@material-ui/core/Toolbar';
import Tooltip from '@material-ui/core/Tooltip/Tooltip';
import { makeStyles } from '@material-ui/core/styles';
import CurrentIdentity from '../CurrentIdentity/CurrentIdentity';
import { LightSwitch } from '../Themer';
const useStyles = makeStyles((theme) => ({
offset: {
...theme.mixins.toolbar,
},
filler: {
flexGrow: 1,
},
appBar: {
backgroundColor: theme.palette.primary.dark,
color: theme.palette.primary.contrastText,
},
appTitle: {
...theme.typography.h6,
color: theme.palette.primary.contrastText,
textDecoration: 'none',
display: 'flex',
alignItems: 'center',
},
lightSwitch: {
padding: '0 20px',
},
logo: {
height: '42px',
marginRight: theme.spacing(2),
},
}));
function a11yProps(index: any) {
return {
id: `nav-tab-${index}`,
'aria-controls': `nav-tabpanel-${index}`,
};
}
const DisabledTabWithTooltip = (props: TabProps) => {
/*The span elements around disabled tabs are needed, as the tooltip
* won't be triggered by disabled elements.
* See: https://material-ui.com/components/tooltips/#disabled-elements
* This must be done in a wrapper component, otherwise the TabS component
* cannot pass it styles down to the Tab component. Resulting in (console)
* warnings. This wrapper acceps the passed down TabProps and pass it around
* the span element to the Tab component.
*/
const msg = `This feature doesn't exist yet. Come help us build it.`;
return (
<Tooltip title={msg}>
<span>
<Tab disabled {...props} />
</span>
</Tooltip>
);
};
function Header() {
const classes = useStyles();
const location = useLocation();
// Prevents error of invalid tab selection in <Tabs>
function highlightTab() {
switch (location.pathname) {
case '/':
return '/';
case '/code':
return '/code';
case '/pulls':
return '/pulls';
case '/settings':
return '/settings';
default:
// using false as value for tabs will result in no selected tab
return false;
}
}
return (
<>
<AppBar position="fixed" className={classes.appBar}>
<Toolbar>
<Link to="/" className={classes.appTitle}>
<img src="/logo.svg" className={classes.logo} alt="git-bug logo" />
git-bug
</Link>
<div className={classes.filler} />
<div className={classes.lightSwitch}>
<LightSwitch />
</div>
<CurrentIdentity />
</Toolbar>
</AppBar>
<div className={classes.offset} />
<Tabs centered value={highlightTab()} aria-label="nav tabs">
<DisabledTabWithTooltip label="Code" value="/code" {...a11yProps(1)} />
<Tab label="Bugs" value="/" component={Link} to="/" {...a11yProps(2)} />
<DisabledTabWithTooltip
label="Pull Requests"
value="/pulls"
{...a11yProps(3)}
/>
<DisabledTabWithTooltip
label="Settings"
value="/settings"
{...a11yProps(4)}
/>
</Tabs>
</>
);
}
export default Header;
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