143 lines
4.2 KiB
Plaintext
143 lines
4.2 KiB
Plaintext
import React from 'react';
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import PropTypes from 'prop-types';
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import EventListener from 'react-event-listener';
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import debounce from 'lodash/debounce';
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import wrapDisplayName from 'recompose/wrapDisplayName';
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import hoistNonReactStatics from 'hoist-non-react-statics';
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import withTheme from '../styles/withTheme';
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import { keys as breakpointKeys } from '../styles/createBreakpoints';
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// By default, returns true if screen width is the same or greater than the given breakpoint.
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export const isWidthUp = (breakpoint, width, inclusive = true) => {
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if (inclusive) {
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return breakpointKeys.indexOf(breakpoint) <= breakpointKeys.indexOf(width);
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}
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return breakpointKeys.indexOf(breakpoint) < breakpointKeys.indexOf(width);
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};
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// By default, returns true if screen width is the same or less than the given breakpoint.
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export const isWidthDown = (breakpoint, width, inclusive = true) => {
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if (inclusive) {
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return breakpointKeys.indexOf(width) <= breakpointKeys.indexOf(breakpoint);
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}
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return breakpointKeys.indexOf(width) < breakpointKeys.indexOf(breakpoint);
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};
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const withWidth = (options = {}) => Component => {
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const {
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resizeInterval = 166, // Corresponds to 10 frames at 60 Hz.
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withTheme: withThemeOption = false,
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} = options;
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class WithWidth extends React.Component {
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state = {
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width: undefined,
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};
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componentDidMount() {
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this.updateWidth(window.innerWidth);
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}
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componentWillUnmount() {
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this.handleResize.cancel();
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}
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handleResize = debounce(() => {
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this.updateWidth(window.innerWidth);
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}, resizeInterval);
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updateWidth(innerWidth) {
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const breakpoints = this.props.theme.breakpoints;
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let width = null;
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/**
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* Start with the slowest value as low end devices often have a small screen.
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*
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* innerWidth |xs sm md lg xl
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* |-------|-------|-------|-------|------>
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* width | xs | sm | md | lg | xl
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*/
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let index = 1;
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while (width === null && index < breakpointKeys.length) {
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const currentWidth = breakpointKeys[index];
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// @media are inclusive, so reproduce the behavior here.
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if (innerWidth < breakpoints.values[currentWidth]) {
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width = breakpointKeys[index - 1];
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break;
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}
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index += 1;
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}
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width = width || 'xl';
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if (width !== this.state.width) {
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this.setState({
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width,
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});
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}
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}
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render() {
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const { initialWidth, theme, width, ...other } = this.props;
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const props = {
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width: width || this.state.width || initialWidth,
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...other,
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};
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const more = {};
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if (withThemeOption) {
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more.theme = theme;
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}
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// When rendering the component on the server,
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// we have no idea about the client browser screen width.
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// In order to prevent blinks and help the reconciliation of the React tree
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// we are not rendering the child component.
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//
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// An alternative is to use the `initialWidth` property.
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if (props.width === undefined) {
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return null;
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}
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return (
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<EventListener target="window" onResize={this.handleResize}>
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<Component {...more} {...props} />
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</EventListener>
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);
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}
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}
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WithWidth.propTypes = {
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/**
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* As `window.innerWidth` is unavailable on the server,
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* we default to rendering an empty componenent during the first mount.
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* In some situation you might want to use an heristic to approximate
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* the screen width of the client browser screen width.
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*
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* For instance, you could be using the user-agent or the client-hints.
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* http://caniuse.com/#search=client%20hint
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*/
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initialWidth: PropTypes.oneOf(['xs', 'sm', 'md', 'lg', 'xl']),
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/**
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* @ignore
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*/
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theme: PropTypes.object.isRequired,
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/**
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* Bypass the width calculation logic.
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*/
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width: PropTypes.oneOf(['xs', 'sm', 'md', 'lg', 'xl']),
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};
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if (process.env.NODE_ENV !== 'production') {
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WithWidth.displayName = wrapDisplayName(Component, 'WithWidth');
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}
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hoistNonReactStatics(WithWidth, Component);
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return withTheme()(WithWidth);
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};
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export default withWidth;
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