[英]How to target button base with material-ui and styled-components
使用ToggleButton
和ToggleButtonGroup
从零部件material-ui
开始材料的UI的盖茨比的模板。 为了避免在生产版本中尝试使用styled-components
出现常见的material-ui
错误。
我有以下反应代码无法正确定位材质 ui 基本按钮。
(我知道材料 ui 可能对布局有意见,但说我想要基本元素的悬停或文本颜色)。
// Also imports React, gatsby packages etc
import ToggleButton from '@material-ui/lab/ToggleButton';
import ToggleButtonGroup from '@material-ui/lab/ToggleButtonGroup';
import styled from 'styled-components';
const StyledToggleButton = styled(ToggleButton)`
color: black;
${'' /* Do not care as much in this section */}
& .MuiButtonBase{
color: pink;
border-radius: 10em;
${'' /* THIS IS WHERE I WANT TO EFFECT THE BASE BUTTONS! DO NOT THINK .MuiButtonBase is correct!*/}
}
`;
您的代码中有两个问题:
MuiButtonBase
CSS 类,但这并不存在。 正确的CSS 类名称是MuiButtonBase-root
。MuiButtonBase-root
位于根元素上(即styled-components
类名称将应用于的同一元素),因此适当的语法是&.MuiButtonBase-root
(没有&符号后的空格)。 在这种情况下.MuiButtonBase-root
的唯一作用是增加特异性,使其胜过默认样式。 使用&&
也可以达到同样的效果(即只是将生成的类名加倍)。下面是一个示例,显示了几种不同的指定样式的方法,所有这些方法都具有相同的特异性。
import React from "react";
import { makeStyles, StylesProvider } from "@material-ui/core/styles";
import FormatAlignLeftIcon from "@material-ui/icons/FormatAlignLeft";
import FormatAlignCenterIcon from "@material-ui/icons/FormatAlignCenter";
import FormatAlignRightIcon from "@material-ui/icons/FormatAlignRight";
import FormatAlignJustifyIcon from "@material-ui/icons/FormatAlignJustify";
import ToggleButton from "@material-ui/lab/ToggleButton";
import ToggleButtonGroup from "@material-ui/lab/ToggleButtonGroup";
import styled from "styled-components";
const useStyles = makeStyles(theme => ({
toggleContainer: {
margin: theme.spacing(2, 0)
}
}));
const StyledToggleButton1 = styled(ToggleButton)`
&& {
color: pink;
border-radius: 10em;
}
`;
const StyledToggleButton2 = styled(ToggleButton)`
&.MuiToggleButton-root {
color: blue;
border-radius: 1em;
}
`;
const StyledToggleButton3 = styled(ToggleButton)`
&.MuiButtonBase-root {
color: purple;
border-color: blue;
}
`;
export default function ToggleButtons() {
const [alignment, setAlignment] = React.useState("left");
const handleAlignment = (event, newAlignment) => {
setAlignment(newAlignment);
};
const classes = useStyles();
return (
<StylesProvider injectFirst>
<div className={classes.toggleContainer}>
<ToggleButtonGroup
value={alignment}
exclusive
onChange={handleAlignment}
aria-label="text alignment"
>
<StyledToggleButton1 value="left" aria-label="left aligned">
<FormatAlignLeftIcon />
</StyledToggleButton1>
<StyledToggleButton2 value="center" aria-label="centered">
<FormatAlignCenterIcon />
</StyledToggleButton2>
<StyledToggleButton3 value="right" aria-label="right aligned">
<FormatAlignRightIcon />
</StyledToggleButton3>
<ToggleButton value="justify" aria-label="justified">
<FormatAlignJustifyIcon />
</ToggleButton>
</ToggleButtonGroup>
</div>
</StylesProvider>
);
}
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