我找到了解决办法。完整的解决方案可在
https://codesandbox.io/s/r76p996zym
或
https://github.com/deadcoder0904/emotion-global-theming
做一个
theme.js
包含应用程序主题的文件
主题JS
export const theme = {
LIGHT: {
textColor: "black",
bgColor: "white"
},
DARK: {
textColor: "white",
bgColor: "black"
}
};
包裹
Global
组件在
withTheme
&需要
theme
支柱
全局的JS
import React from "react";
import { injectGlobal } from "react-emotion";
import { withTheme } from "emotion-theming";
class Global extends React.Component {
componentDidUpdate(prevProps) {
if (this.props.theme.bgColor !== prevProps.theme.bgColor) {
window.document.body.style.backgroundColor = this.props.theme.bgColor;
}
if (this.props.theme.textColor !== prevProps.theme.textColor) {
window.document.body.style.color = this.props.theme.textColor;
}
}
render() {
injectGlobal`
color: ${this.props.theme.textColor};
background-color: ${this.props.theme.bgColor};
`;
return React.Children.only(this.props.children);
}
}
export default withTheme(Global);
然后把你的
App
组件与
全球的
组件。AS
全球的
组件需要
主题
应该包在里面
ThemeProvider
索引文件
import React from "react";
import ReactDOM from "react-dom";
import { ThemeProvider } from "emotion-theming";
import Global from "./injectGlobal";
import { theme } from "./theme";
class App extends React.Component {
state = {
isLight: true,
title: "Light Theme",
theme: theme.LIGHT
};
_toggleTheme = () => {
const { isLight } = this.state;
const title = isLight ? "Dark Theme" : "Light Theme";
const newTheme = isLight ? theme.DARK : theme.LIGHT;
this.setState({
isLight: !isLight,
title,
theme: newTheme
});
};
render() {
const { title, theme } = this.state;
return (
<ThemeProvider theme={theme}>
<Global>
<React.Fragment>
<h1>{title}</h1>
<button onClick={this._toggleTheme}>Toggle Theme</button>
</React.Fragment>
</Global>
</ThemeProvider>
);
}
}
const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);
注意-此答案仅在情感10发布和API更改之前有效。如果情感版本小于10,则使用此解决方案。