127 lines
4.1 KiB
JavaScript
127 lines
4.1 KiB
JavaScript
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
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import React from 'react';
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import PropTypes from 'prop-types';
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import createBroadcast from 'brcast';
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import themeListener, { CHANNEL } from './themeListener';
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import exactProp from '../utils/exactProp';
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/**
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* This component takes a `theme` property.
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* It makes the `theme` available down the React tree thanks to React context.
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* This component should preferably be used at **the root of your component tree**.
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*/
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class MuiThemeProvider extends React.Component {
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constructor(props, context) {
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super(props, context);
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// Get the outer theme from the context, can be null
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this.broadcast = createBroadcast();
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this.unsubscribeId = null;
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this.outerTheme = null;
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this.outerTheme = themeListener.initial(context);
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// Propagate the theme so it can be accessed by the children
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this.broadcast.setState(this.mergeOuterLocalTheme(this.props.theme));
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}
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getChildContext() {
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return {
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[CHANNEL]: this.broadcast,
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muiThemeProviderOptions: {
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sheetsManager: this.props.sheetsManager,
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disableStylesGeneration: this.props.disableStylesGeneration
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}
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};
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}
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componentDidMount() {
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// Subscribe on the outer theme, if present
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this.unsubscribeId = themeListener.subscribe(this.context, outerTheme => {
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this.outerTheme = outerTheme;
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// Forward the parent theme update to the children
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this.broadcast.setState(this.mergeOuterLocalTheme(this.props.theme));
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});
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}
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componentWillReceiveProps(nextProps) {
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// Propagate a local theme update
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if (this.props.theme !== nextProps.theme) {
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this.broadcast.setState(this.mergeOuterLocalTheme(nextProps.theme));
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}
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}
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componentWillUnmount() {
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if (this.unsubscribeId !== null) {
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themeListener.unsubscribe(this.context, this.unsubscribeId);
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}
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}
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// We are not using the React state in order to avoid unnecessary rerender.
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// Simple merge between the outer theme and the local theme
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mergeOuterLocalTheme(localTheme) {
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// To support composition of theme.
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if (typeof localTheme === 'function') {
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return localTheme(this.outerTheme);
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}
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if (!this.outerTheme) {
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return localTheme;
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}
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return _extends({}, this.outerTheme, localTheme);
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}
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render() {
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return this.props.children;
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}
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}
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MuiThemeProvider.defaultProps = {
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disableStylesGeneration: false,
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sheetsManager: null
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};
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MuiThemeProvider.propTypes = {
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/**
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* You can only provide a single element with react@15, a node with react@16.
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*/
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children: PropTypes.node.isRequired,
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/**
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* You can disable the generation of the styles with this option.
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* It can be useful when traversing the React tree outside of the HTML
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* rendering step on the server.
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* Let's say you are using react-apollo to extract all
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* the queries made by the interface server side.
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* You can significantly speed up the traversal with this property.
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*/
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disableStylesGeneration: PropTypes.bool,
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/**
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* The sheetsManager is used to deduplicate style sheet injection in the page.
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* It's deduplicating using the (theme, styles) couple.
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* On the server, you should provide a new instance for each request.
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*/
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sheetsManager: PropTypes.object,
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/**
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* A theme object.
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*/
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theme: PropTypes.oneOfType([PropTypes.object, PropTypes.func]).isRequired
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};
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MuiThemeProvider.childContextTypes = _extends({}, themeListener.contextTypes, {
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muiThemeProviderOptions: PropTypes.object
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});
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MuiThemeProvider.contextTypes = themeListener.contextTypes;
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// Add a wrapper component to generate some helper messages in the development
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// environment.
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// eslint-disable-next-line import/no-mutable-exports
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let MuiThemeProviderWrapper = MuiThemeProvider;
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if (process.env.NODE_ENV !== 'production') {
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MuiThemeProviderWrapper = props => React.createElement(MuiThemeProvider, props);
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MuiThemeProviderWrapper.propTypes = exactProp(MuiThemeProvider.propTypes, 'MuiThemeProvider');
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}
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export default MuiThemeProviderWrapper; |