[Badge] Port Badge Component

docs/api/Badge/Badge.md

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+Badge
+======
+
+
+
+Props
+-----
+
+| Name | Type | Default | Description |
+|:-----|:-----|:--------|:------------|
+| accent | bool | false | If true, the badge will use the accent badge colors. |
+| badgeClassName | string |  | The CSS class name of the badge element. |
+| <span style="color: #31a148">badgeContent *</span> | node |  | This is the content rendered within the badge. |
+| <span style="color: #31a148">children *</span> | node |  | The node that the badge will be applied to. |
+| className | string |  | The CSS class name of the root element. |
+| primary | bool | false | If true, the badge will use the primary badge colors. |
+
+Any other properties supplied will be spread to the root element.

docs/site/src/demos/badges/SimpleBadge.js

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+// @flow weak
+
+import React from 'react';
+import { createStyleSheet } from 'jss-theme-reactor';
+import Badge from 'material-ui/Badge';
+import customPropTypes from 'material-ui/utils/customPropTypes';
+import Icon from 'material-ui/Icon';
+
+const styleSheet = createStyleSheet('SimpleBadge', () => ({
+  badge: {
+    margin: '0 20px',
+  },
+}));
+
+export default function SimpleBadge(props, context) {
+  const classes = context.styleManager.render(styleSheet);
+  return (
+    <div className={classes.row}>
+      <Badge
+        badgeContent={4}
+        className={classes.badge}
+        primary
+      >
+        <Icon>mail</Icon>
+      </Badge>
+      <Badge
+        accent
+        badgeContent={10}
+        className={classes.badge}
+      >
+        <Icon>folder</Icon>
+      </Badge>
+    </div>
+  );
+}
+
+SimpleBadge.contextTypes = {
+  styleManager: customPropTypes.muiRequired,
+};

docs/site/src/demos/badges/badges.md

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+# Badge
+
+Badge generates a small badge to the top-right of its child(ren).
+
+## Simple examples
+
+Two examples of badges containing text, using primary and secondary colors. The badge is applied to its children - an icon for the first example, and an Icon Button with tooltip for the second.
+
+{{demo='demos/badges/SimpleBadge.js'}}
+

src/Badge/Badge.js

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+// @flow weak
+
+import React, { PropTypes } from 'react';
+import classNames from 'classnames';
+import { createStyleSheet } from 'jss-theme-reactor';
+import customPropTypes from '../utils/customPropTypes';
+
+const radius = 12;
+const radius2x = 2 * radius;
+
+export const styleSheet = createStyleSheet('Badge', (theme) => {
+  const { typography, palette } = theme;
+
+  return {
+    root: {
+      position: 'relative',
+      display: 'inline-block',
+    },
+    badge: {
+      display: 'flex',
+      flexDirection: 'row',
+      flexWrap: 'wrap',
+      justifyContent: 'center',
+      alignContent: 'center',
+      alignItems: 'center',
+      position: 'absolute',
+      top: `-${radius}px`,
+      right: `-${radius}px`,
+      fontWeight: typography.fontWeight,
+      fontSize: radius,
+      width: radius2x,
+      height: radius2x,
+      borderRadius: '50%',
+      backgroundColor: palette.color,
+      color: palette.textColor,
+    },
+    primary: {
+      backgroundColor: palette.primary[500],
+      color: palette.getContrastText(palette.primary[500]),
+    },
+    accent: {
+      backgroundColor: palette.accent.A200,
+      color: palette.getContrastText(palette.accent.A200),
+    },
+  };
+});
+
+export default function Badge(props, context) {
+  const {
+    badgeClassName: badgeClassNameProp,
+    badgeContent,
+    className: classNameProp,
+    children,
+    primary,
+    accent,
+    ...other
+  } = props;
+
+  const classes = context.styleManager.render(styleSheet);
+  const className = classNames({
+    [classes.root]: true,
+  }, classNameProp);
+  const badgeClassName = classNames({
+    [classes.badge]: true,
+    [classes.primary]: primary,
+    [classes.accent]: accent,
+  }, badgeClassNameProp);
+
+  return (
+    <div className={className} {...other}>
+      {children}
+      <span className={badgeClassName}>
+        {badgeContent}
+      </span>
+    </div>
+  );
+}
+
+Badge.propTypes = {
+  /**
+   * If true, the badge will use the accent badge colors.
+   */
+  accent: PropTypes.bool,
+  /**
+   * The css class name of the badge element.
+   */
+  badgeClassName: PropTypes.string,
+  /**
+   * This is the content rendered within the badge.
+   */
+  badgeContent: PropTypes.node.isRequired,
+  /**
+   * The badge will be added relativelty to this node.
+   */
+  children: PropTypes.node.isRequired,
+  /**
+   * The css class name of the root element.
+   */
+  className: PropTypes.string,
+  /**
+   * If true, the badge will use the primary badge colors.
+   */
+  primary: PropTypes.bool,
+};
+
+Badge.defaultProps = {
+  primary: false,
+  accent: false,
+};
+
+Badge.contextTypes = {
+  styleManager: customPropTypes.muiRequired,
+};

src/Badge/Badge.spec.js

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+// @flow weak
+/* eslint-env mocha */
+import React from 'react';
+import { createShallowWithContext } from 'test/utils';
+import { assert } from 'chai';
+import Badge, { styleSheet } from './Badge';
+
+describe('<Badge />', () => {
+  let shallow;
+  let classes;
+
+  before(() => {
+    shallow = createShallowWithContext();
+    classes = shallow.context.styleManager.render(styleSheet);
+  });
+
+  const testChildren = <div className="unique">Hello World</div>;
+
+  it('renders children and badgeContent', () => {
+    const wrapper = shallow(
+      <Badge badgeContent={10}>{testChildren}</Badge>,
+    );
+
+    assert.strictEqual(wrapper.contains(testChildren), true, 'should contain the children');
+    assert.ok(wrapper.find('span').length, 'should contain the badgeContent');
+  });
+
+  it('renders children and overwrite badge class', () => {
+    const badgeClassName = 'testBadgeClassName';
+
+    const wrapper = shallow(
+      <Badge badgeContent={10} badgeClassName={badgeClassName}>{testChildren}</Badge>,
+    );
+
+    assert.strictEqual(wrapper.contains(testChildren), true, 'should contain the children');
+    assert.strictEqual(wrapper.find('span').hasClass('testBadgeClassName'), true,
+      'should contain the badgeClassName');
+  });
+
+  it('renders children by default', () => {
+    const wrapper = shallow(
+      <Badge badgeContent={10}>{testChildren}</Badge>,
+    );
+
+    assert.strictEqual(wrapper.contains(testChildren), true, 'should contain the children');
+  });
+
+  it('renders children and className', () => {
+    const wrapper = shallow(
+      <Badge badgeContent={10} className="testClassName">{testChildren}</Badge>,
+    );
+
+    assert.strictEqual(wrapper.contains(testChildren), true, 'should contain the children');
+    assert.strictEqual(wrapper.is('.testClassName'), true, 'should contain the className');
+  });
+
+  it('renders children and have primary styles', () => {
+    const wrapper = shallow(
+      <Badge badgeContent={10} primary>{testChildren}</Badge>,
+    );
+
+    assert.strictEqual(wrapper.contains(testChildren), true, 'should contain the children');
+    assert.strictEqual(wrapper.find('span').hasClass(classes.primary), true,
+      'should have primary class');
+  });
+
+  it('renders children and have accent styles', () => {
+    const wrapper = shallow(
+      <Badge badgeContent={10} accent>{testChildren}</Badge>,
+    );
+
+    assert.strictEqual(wrapper.contains(testChildren), true, 'should contain the children');
+    assert.strictEqual(wrapper.find('span').hasClass(classes.accent), true,
+      'should have accent class');
+  });
+
+  it('renders children and overwrite root styles', () => {
+    const style = {
+      backgroundColor: 'red',
+    };
+    const wrapper = shallow(
+      <Badge badgeContent={10} style={style}>{testChildren}</Badge>,
+    );
+
+    assert.strictEqual(wrapper.contains(testChildren), true, 'should contain the children');
+    assert.strictEqual(wrapper.node.props.style.backgroundColor, style.backgroundColor,
+      'should overwrite badge backgroundColor');
+  });
+});

src/Badge/index.js

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+/* eslint-disable flowtype/require-valid-file-annotation */
+
+export default from './Badge';

test/regressions/site/src/tests/Badge/Badge.js

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+// @flow weak
+
+import React from 'react';
+import Badge from 'material-ui/Badge';
+import Icon from 'material-ui/Icon';
+
+export default function SimpleBadge() {
+  return (
+    <Badge badgeContent={1} primary>
+      <Icon>mail</Icon>
+    </Badge>
+  );
+}