我有一个使用标准深色主题的主题提供程序。我希望能够从自己的自定义组件中访问此主题的详细信息,但是我不知道该怎么做。在以下示例中,this.props.theme
未定义
ReactDOM.render(
<MuiThemeProvider theme={theme}>
<App/>
</MuiThemeProvider>, document.getElementById('root')
);
class App extends Component {
render() {
const {classes} = this.props;
return (
<div className="App">
<MainMenu/>
<div className={classes.root}>
<Grid container spacing={8}>
<Grid item xs>
<Chart theme={this.props.theme}/>
</Grid>
</Grid>
</div>
</div>
);
}
}
您需要使用material-ui随附的HOC(高阶组件)(请注意,我使用的是beta版的YMMV)。
例:
LeftNavigation.jsx
import React from 'react';
import PropTypes from 'prop-types';
import Hidden from 'material-ui/Hidden';
import Drawer from 'material-ui/Drawer';
import List from 'material-ui/List';
import Divider from 'material-ui/Divider';
import { withStyles } from 'material-ui/styles';
import { MailFolderListItems, OtherMailFolderListItems } from '../../../components/tileData';
const styles = theme => ({
docked: {
height: '100%',
},
drawerPaper: {
width: 250,
height: '100%',
[theme.breakpoints.up('md')]: {
width: theme.drawerWidth,
position: 'relative',
height: '100%',
},
},
drawerHeader: theme.mixins.toolbar,
});
class LeftNavigation extends React.Component {
render() {
const { classes, theme } = this.props;
const drawer = (
<div>
<div className={classes.drawerHeader} />
<Divider />
<List><MailFolderListItems toggle={this.props.handleDrawerToggle} /></List>
<Divider />
<List><OtherMailFolderListItems toggle={this.props.handleDrawerToggle} /></List>
</div>
);
return [
<Hidden mdUp key="mobile">
<Drawer
type="temporary"
anchor={theme.direction === 'rtl' ? 'right' : 'left'}
open={this.props.mobileOpen}
classes={{ paper: classes.drawerPaper }}
onRequestClose={this.props.handleDrawerToggle}
ModalProps={{ keepMounted: true /* Better open performance on mobile. */ }}
>
{drawer}
</Drawer>
</Hidden>,
<Hidden mdDown implementation="css" key="desktop">
<Drawer
type="permanent"
open
classes={{
docked: classes.docked,
paper: classes.drawerPaper,
}}
>
{drawer}
</Drawer>
</Hidden>,
];
}
}
LeftNavigation.propTypes = {
classes: PropTypes.object.isRequired,
theme: PropTypes.object.isRequired,
mobileOpen: PropTypes.bool.isRequired,
handleDrawerToggle: PropTypes.func.isRequired
};
export default withStyles(styles, { withTheme: true })(LeftNavigation);
该const styles = theme => ({...})
是你定义你的风格。
该export default withStyles(styles, { withTheme: true })(LeftNavigation);
节目与高阶组件的使用通过样式/主题到您的组件。
我使用的withTheme: true
不仅是样式,而且主题也可以通过。
因此,对于您的代码,我将执行以下操作:
import { withStyles } from 'material-ui/styles';
const styles = theme => ({
root: {
height: '100%'
}
})
class App extends Component {
render() {
const {classes} = this.props;
return (
<div className="App">
<MainMenu/>
<div className={classes.root}>
<Grid container spacing={8}>
<Grid item xs>
<Chart theme={this.props.theme}/>
</Grid>
</Grid>
</div>
</div>
);
}
}
export default withStyles(styles, { withTheme: true})(App);
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