我有以下内容:
class StyledInput extends React.Component{
styles = (color, theme) => ({
underline: {
borderBottom: `2px solid ${color}`,
'&:after': {
borderBottom: `2px solid ${color}`,
}
}
})
div = props => (
<TextField
placeholder="temp input"
InputProps={{
classes:{
root: props.classes.underline
},
style:{
height: '1.5rem',
fontSize:'1rem',
marginTop: '-1rem',
}
}}
>
<div>
{props.children}
</div>
</TextField>
)
Styled = withStyles(this.styles('white'))(this.div)
render(){
return(
<div>
<this.Styled>{this.props.children}</this.Styled>
</div>
);
}
}
export default StyledInput;
因此,它的作用是成功地获取了一个实质性的UI文本字段,并在用户单击该字段时将底部栏更改为白色,而不是蓝色。大!
...但是...
我真的想做的是
<this.Styled color={someDefinedColor}>{this.props.children}</this.Styled>
Styled
如下所示:
Styled = (color) => withStyles(this.styles(color))(this.div)
,以便我可以将颜色动态传递给Styled
属性。显然,这是伪代码-我一直在使用它,但无法通过它。一般来说,material-ui会动态更改颜色,这真让人讨厌,所以我想知道是否有人知道如何使它起作用。
谢谢!
解决方案 ...虽然不好。
我不确定如何将伪元素与makeStyles
和功能组件一起使用,但这是一种对我有用的解决方案。在后人将其添加到这里,以防其他人发现它有用:
class StyledInputInner extends React.Component{
styles = (color, theme) => ({
underline: {
'&:before': {
borderBottom: `2px solid ${color}`,
},
'&:after': {
borderBottom: `2px solid ${color}`,
},
'&:hover:not($disabled):before': {
backgroundColor: `2px solid ${color}`
},
'&$focused:after': {
borderBottom: `2px solid ${color}`
},
}
})
textField = props => (
<TextField
placeholder="temp input"
InputProps={{
classes:{
root: props.classes.underline
},
style:{
height: '1.5rem',
fontSize:'1rem',
marginTop: '-1rem',
}
}}
onClick={()=>this.props.onClick()}
onChange={(evt)=>{this.props.onChange(evt)}}
>
<div>
{props.children}
</div>
</TextField>
)
StyledTextField = withStyles(this.styles(this.props.color))(this.textField)
render(){
return(
<div>
<this.StyledTextField>{this.props.children}</this.StyledTextField>
</div>
);
}
}
class StyledInput extends Component {
render(){
return(
<MainContext.Consumer>
{stateData => {
return(
<StyledInputInner
color={stateData.state.InputColor}
onChange={(evt)=>this.props.onChange(evt)}
onClick={this.props.onClick}
>
{this.props.children}
</StyledInputInner>
)
}}
</MainContext.Consumer>
)
}
}
export default StyledInput;
答案 0 :(得分:2)
以下是使用新的hook syntax来执行此操作的示例:
index.js
import React from "react";
import ReactDOM from "react-dom";
import StyledComponent from "./StyledComponent";
const CustomComponent = ({ children, className }) => {
return (
<p className={className}>
Just showing passing in the component to use rather than automatically
using a div.
<br />
{children}
</p>
);
};
function App() {
return (
<div className="App">
<StyledComponent color="green">
Here's my content with green underline
</StyledComponent>
<StyledComponent
component={CustomComponent}
color="blue"
hoverColor="orange"
>
Here's my content with blue underline that changes to orange on hover.
</StyledComponent>
</div>
);
}
const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);
StyledComponent.js
import React from "react";
import { makeStyles } from "@material-ui/styles";
const useStyles = makeStyles({
root: {
borderBottom: ({ color }) => `2px solid ${color}`,
"&:hover": {
borderBottom: ({ color, hoverColor }) => {
const borderColor = hoverColor ? hoverColor : color;
return `2px solid ${borderColor}`;
}
}
}
});
const StyledComponent = ({
component: ComponentProp = "div",
children,
color,
hoverColor
}) => {
const classes = useStyles({ color, hoverColor });
return <ComponentProp className={classes.root}>{children}</ComponentProp>;
};
export default StyledComponent;
如果需要,可以将此useStyles
方法放在其自己的文件中,并将其重新用作自定义钩子,以使其生成的类(仍具有可变支持)可用于多个组件(而不只是StyledComponent
。
答案 1 :(得分:0)
这里有一个例子,说明如何像 styled-components 一样使用 makeStyles() 只使用 props 或 props 和 theme
component.js
import { tableCellStyling } from './component.styled.js';
const RenderRow = (props) => {
const { noPaddingTopBottom } = tableCellStyling(props);
return(
<StyledTableRow>
{data.map( (row,i) => (
<StyledTableCell className={noPaddingTopBottom}>
{row.data}
</StyledTableCell>
)}
</StyledTableRow>
)
};
假设我的 props 对象由 RenderRow 组件传递给 tableCellStyling,其中包含 { color: 'grey', thinRow: true }
component.styled.js
import { makeStyles } from '@material-ui/core/styles';
export const tableCellStyling = makeStyles(theme => ({
noPaddingTopBottom: {
borderBottom: ({ color }) => color ? `2px solid ${color}` : '2px solid red',
paddingBottom: props => props.hasActions && 0,
paddingTop: props => props.hasActions && 0,
backgroundColor: theme.palette.common.white,
},
}));