我有onClick或onFocus之类的事件处理程序,我无法弄清楚如何在处理程序代码中使用主题。我想改变iconButton的颜色,我不想硬编码颜色,因为我们想要一般使用的组件,并最终使用完全不同颜色的主题。
除了withStyles之外还尝试使用withTheme,所以我可以在render()中获取主题,但是我无法从该渲染调用的处理程序中获取它。尝试传递它,调用作为prop,根据类中的主题值(渲染内部和外部)声明常量,什么也没有。
我不知道这是可能的,还是没有内置的,或者是什么。我希望我只是遗漏了一些东西。
环境:CodeSandBox,所以CreateReactApp。 Material-UI加上React-Select,withStyles和withTheme(useTheme help here?)。
handleInfoClick = (e) => {
if (this.instructionsContent.current.style.display !== "block") {
this.instructionsContent.current.style.display = "block";
this.instructionsButton.current.style.color = "#f9be00"; //works
} else {
this.instructionsContent.current.style.display = "none";
this.instructionsButton.current.style.color = this.theme.palette.text.disabled; // doesn't work
还试过这个:
handleSelectFocus = () => {
if (this.state.visited === false) {
this.instructionsContent.current.style.display = "block";
this.instructionsButton.current.style.color = this.activeButtonColor;
this.setState({ visited: true });
}
};
...
render() {
const { theme } = this.props;
...
const activeButtonColor = theme.palette.secondary.main;
最后,还尝试使用我可以在render()中使用的类,但它也不识别这些:
const styles = theme => ({
...
infoButton: {
position: "absolute",
bottom: 0,
left: 0,
marginBottom: 20,
width: 48,
color: theme.palette.text.disabled,
"&:active": {
color: theme.palette.secondary.main
}
},
infoButtonActive: {
position: "absolute",
bottom: 0,
left: 0,
marginBottom: 20,
width: 48,
color: theme.palette.secondary.main
},
....
希望其中一种方法能为我的<IconButton>
提供一种颜色 - 从我的主题:
<div className={classes.infoButtonDiv}>
<IconButton
aria-label="Instructions"
className={classes.infoButton}
buttonRef={this.instructionsButton}
onClick={this.handleInfoClick}
>
<HelpOutline />
</IconButton>
</div>
(在应用于根元素的不同theme.js文件中:
const theme = createMuiTheme({
typography: {
fontFamily: ["Roboto", '"Helvetica Neue"', "Arial", "sans-serif"].join(",")
},
palette: {
primary: {
main: "#00665e"
},
secondary: {
main: "#f9be00"
}
},
overrides: {
LeftNav: {
drawerDiv: {
backgroundColor: "#00665e",
width: 300
}
}
},
direction: "ltr",
typography: {
useNextVariants: true
}
});
触发状态更改onClick
将更新颜色,但前提是您传递了IconButton颜色道具(“主要”或“次要”)支持的值之一。
import React, { Component } from "react";
import IconButton from "@material-ui/core/IconButton";
import DeleteIcon from "@material-ui/icons/Delete";
class ButtonStyle extends Component {
constructor(props) {
super(props);
this.state = {
buttonColor: "primary"
};
}
handleClick = e => {
this.setState({
buttonColor: "secondary"
});
};
render() {
const buttonColor = this.state.buttonColor;
return (
<div>
<IconButton
aria-label="Delete"
color={buttonColor}
onClick={this.handleClick}
>
<DeleteIcon />
</IconButton>
</div>
);
}
}
export default ButtonStyle;