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* wip styled * more tests, lint * add styled system tests * switch back to style-system v3, until v4 changes the format back * switch back to style-system v3, until v4 changes the format back * switch back to style-system v3, until v4 changes the format back, better types * upgrade flow and react * upgrade theming * flow types * migrate to hooks * Fix tests * Update size snapshot * more tests * accept multiple static and dynamic style declarations * implement shouldForwardProp * merge the styles arguments passed to styled * add test for empty values returned from function rules * optimize perf, better types * support label * Update changelog.md * skip the tests for now on the ci
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| // @flow | ||
| /* eslint-disable react/prop-types, react/require-default-props */ | ||
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| import React from 'react' | ||
| import isPropValid from '@emotion/is-prop-valid' | ||
| import type {StatelessFunctionalComponent, ComponentType} from 'react' | ||
| import {ThemeContext as DefaultThemeContext} from 'theming' | ||
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| import createUseStyles from './createUseStyles' | ||
| import type {HookOptions, StaticStyle, DynamicStyle} from './types' | ||
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| type StyledProps = { | ||
| className?: string, | ||
| as?: string | ||
| } | ||
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| type StyleArg<Theme> = StaticStyle | DynamicStyle<Theme> | null | void | '' | ||
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| const parseStyles = <Theme>(args: {[string]: StyleArg<Theme>}) => { | ||
| const dynamicStyles = [] | ||
| let staticStyle | ||
| let label = 'css' | ||
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||
| // Not using ...rest to optimize perf. | ||
| for (const key in args) { | ||
| const style = args[key] | ||
| if (!style) continue | ||
| if (typeof style === 'function') { | ||
| dynamicStyles.push(style) | ||
| } else { | ||
| if (!staticStyle) staticStyle = {} | ||
| Object.assign(staticStyle, style) | ||
| if ('label' in staticStyle) { | ||
| // Label could potentially be defined in each style object, | ||
| // so we take the first one and ignore every subsequent one. | ||
| if (label === 'css') label = staticStyle.label | ||
| // Label should not leak to the core. | ||
| delete staticStyle.label | ||
| } | ||
| } | ||
| } | ||
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| const styles = {} | ||
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| if (staticStyle) styles[label] = staticStyle | ||
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| // When there is only one function rule, we don't need to wrap it. | ||
| if (dynamicStyles.length === 1) { | ||
| styles.cssd = dynamicStyles[0] | ||
| } | ||
|
|
||
| // We create a new function rule which will call all other function rules | ||
| // and merge the styles they return. | ||
| if (dynamicStyles.length > 1) { | ||
| styles.cssd = props => { | ||
| const merged = {} | ||
| for (let i = 0; i < dynamicStyles.length; i++) { | ||
| const dynamicStyle = dynamicStyles[i](props) | ||
| if (dynamicStyle) Object.assign(merged, dynamicStyle) | ||
| } | ||
| return merged | ||
| } | ||
| } | ||
|
|
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| return {styles, label} | ||
| } | ||
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| type StyledOptions<Theme> = HookOptions<Theme> & { | ||
| shouldForwardProp?: string => boolean | ||
| } | ||
|
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| export default <Theme: {}>( | ||
| type: string | StatelessFunctionalComponent<StyledProps> | ComponentType<StyledProps>, | ||
| options?: StyledOptions<Theme> = {} | ||
| ) => { | ||
| const {theming, shouldForwardProp} = options | ||
| const isTagName = typeof type === 'string' | ||
| const ThemeContext = theming ? theming.context : DefaultThemeContext | ||
|
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| return function StyledFactory(/* :: ...args: StyleArg<Theme>[] */): StatelessFunctionalComponent< | ||
| StyledProps | ||
| > { | ||
| // eslint-disable-next-line prefer-rest-params | ||
| const {styles, label} = parseStyles(arguments) | ||
|
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| const useStyles = createUseStyles(styles, label ? {...options, name: label} : options) | ||
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| const Styled = (props: StyledProps) => { | ||
| const {as, className} = props | ||
| // $FlowFixMe theming ThemeContext types need to be fixed. | ||
| const theme = React.useContext(ThemeContext) | ||
| const classes = useStyles({...props, theme}) | ||
| const childProps: StyledProps = ({}: any) | ||
|
|
||
| for (const prop in props) { | ||
| // We don't want to pass non-dom props to the DOM, | ||
| // but we still want to forward them to a users component. | ||
| if (isTagName && !isPropValid(prop)) continue | ||
| if (shouldForwardProp && shouldForwardProp(prop) === false) continue | ||
| childProps[prop] = props[prop] | ||
| } | ||
| // $FlowIgnore we don't care label might not exist in classes. | ||
| const classNames = `${classes[label] || classes.css || ''} ${classes.cssd || ''}`.trim() | ||
| childProps.className = className ? `${className} ${classNames}` : classNames | ||
|
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| return React.createElement(as || type, childProps) | ||
| } | ||
|
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| return Styled | ||
| } | ||
| } |
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