Merge pull request #27 from unix/badge

feat: add badge component

components/badge/badge.tsx

@@ -0,0 +1,70 @@
+import React, { useMemo } from 'react'
+import withDefaults from '../utils/with-defaults'
+import useTheme from '../styles/use-theme'
+import { NormalSizes, NormalTypes } from '../utils/prop-types'
+import { ZeitUIThemesPalette } from 'components/styles/themes'
+
+interface Props {
+  type?: NormalTypes
+  size?: NormalSizes
+  className?: string
+}
+
+const defaultProps = {
+  type: 'default' as NormalTypes,
+  size: 'medium' as NormalSizes,
+  className: '',
+}
+
+export type BadgeProps = Props & typeof defaultProps & React.HTMLAttributes<any>
+
+const getFontSize = (size: NormalSizes) => {
+  const sizes: { [key in NormalSizes]: string } = {
+    mini: '.7rem',
+    small: '.75rem',
+    medium: '.875rem',
+    large: '1rem',
+  }
+  return sizes[size]
+}
+
+const getBgColor = (type: NormalTypes, palette: ZeitUIThemesPalette) => {
+  const colors: { [key in NormalTypes]: string } = {
+    default: palette.foreground,
+    success: palette.success,
+    warning: palette.warning,
+    error: palette.error,
+    secondary: palette.secondary,
+  }
+  return colors[type]
+}
+
+const Badge: React.FC<React.PropsWithChildren<BadgeProps>> = React.memo(({
+  type, size, className, children, ...props
+}) => {
+  const theme = useTheme()
+  const bg = useMemo(() => getBgColor(type, theme.palette), [type, theme.palette])
+  const font = useMemo(() => getFontSize(size), [size])
+  
+  return (
+    <span className={className} {...props}>
+      {children}
+      <style jsx>{`
+        span {
+          display: inline-block;
+          padding: 4px 7px;
+          border-radius: 16px;
+          font-variant: tabular-nums;
+          line-height: 1;
+          vertical-align: middle;
+          background-color: ${bg};
+          color: white;
+          font-size: ${font};
+          border: 0;
+        }
+      `}</style>
+    </span>
+  )
+})
+
+export default withDefaults(Badge, defaultProps)

components/badge/index.ts

@@ -0,0 +1,3 @@
+import Badge from './badge'
+
+export default Badge

components/index.ts

@@ -36,3 +36,4 @@ export { default as Select } from './select'
 export { default as Tabs } from './tabs'
 export { default as Progress } from './progress'
 export { default as Tree } from './file-tree'
+export { default as Badge } from './badge'

components/styles/css-baseline/css-baseline.tsx

@@ -155,11 +155,6 @@ const CSSBaseline: React.FC<React.PropsWithChildren<{}>> = React.memo(({
           font-weight: 600;
         }
         
-        selection {
-          background-color: ${theme.palette.background};
-          color: ${theme.palette.foreground};
-        }
-        
         input-webkit-autofill {
           box-shadow: 0 0 0 100px var(--geist-background) inset;
         }
@@ -240,6 +235,11 @@ const CSSBaseline: React.FC<React.PropsWithChildren<{}>> = React.memo(({
           outline: none;
           list-style: none;
         }
+        
+        ::selection {
+          background-color: ${theme.palette.selection};
+          color: ${theme.palette.foreground};
+        }
       `}</style>
     </>
   )

pages/docs/components/badge.mdx

@@ -0,0 +1,60 @@
+import { Layout, Playground, Attributes } from 'lib/components'
+import { Badge, Spacer } from 'components'
+
+export const meta = {
+  title: 'Badge',
+  description: 'Badge',
+}
+
+## Badge
+
+Display an indicator that requires attention.
+
+<Playground
+  scope={{ Badge, Spacer }}
+  code={`
+  <>
+    <Badge>1</Badge> <Spacer y={.5} />
+    <Badge>50</Badge> <Spacer y={.5} />
+    <Badge>100</Badge> <Spacer y={.5} />
+    <Badge>2020</Badge>
+  </>
+`} />
+
+<Playground
+  title="Type"
+  scope={{ Badge, Spacer }}
+  code={`
+  <>
+    <Badge type="success">Success</Badge> <Spacer y={.5} />
+    <Badge type="warning">Warning</Badge> <Spacer y={.5} />
+    <Badge type="error">Error</Badge> <Spacer y={.5} />
+    <Badge type="secondary">Secondary</Badge>
+  </>
+`} />
+
+<Playground
+  title="Size"
+  scope={{ Badge, Spacer }}
+  code={`
+  <>
+    <Badge size="mini">Mini</Badge> <Spacer y={.5} />
+    <Badge size="small">Small</Badge> <Spacer y={.5} />
+    <Badge size="medium">Medium</Badge> <Spacer y={.5} />
+    <Badge size="large">Large</Badge>
+  </>
+`} />
+
+
+<Attributes edit="/pages/docs/components/badge.mdx">
+<Attributes.Title>Badge.Props</Attributes.Title>
+
+| Attribute | Description | Type | Accepted values | Default
+| ---------- | ---------- | ---- |  -------------- | ------ |
+| **type** | badge type | `NormalTypes` | `'default', 'secondary', 'success', 'warning', 'error'` | `default` |
+| **size** | badge size | `NormalSizes` | `'mini', 'small', 'medium', 'large'` | `medium` |
+| ... | native props | `HTMLAttributes` | `'alt', 'id', 'className', ...` | - |
+
+</Attributes>
+
+export default ({ children }) => <Layout meta={meta}>{children}</Layout>