@material-ui/core/esm/Badge/Badge.js

React components that implement Google's Material Design.

import _extends from "@babel/runtime/helpers/esm/extends";
import _objectWithoutProperties from "@babel/runtime/helpers/esm/objectWithoutProperties";
import React from 'react';
import PropTypes from 'prop-types';
import clsx from 'clsx';
import withStyles from '../styles/withStyles';
import { capitalize } from '../utils/helpers';
var RADIUS = 10;
export var styles = function styles(theme) {
  return {
    /* Styles applied to the root element. */
    root: {
      position: 'relative',
      display: 'inline-flex',
      // For correct alignment with the text.
      verticalAlign: 'middle'
    },

    /* Styles applied to the badge `span` element. */
    badge: {
      display: 'flex',
      flexDirection: 'row',
      flexWrap: 'wrap',
      justifyContent: 'center',
      alignContent: 'center',
      alignItems: 'center',
      position: 'absolute',
      top: 0,
      right: 0,
      boxSizing: 'border-box',
      fontFamily: theme.typography.fontFamily,
      fontWeight: theme.typography.fontWeightMedium,
      fontSize: theme.typography.pxToRem(12),
      minWidth: RADIUS * 2,
      padding: '0 4px',
      height: RADIUS * 2,
      borderRadius: RADIUS,
      backgroundColor: theme.palette.color,
      color: theme.palette.textColor,
      zIndex: 1,
      // Render the badge on top of potential ripples.
      transform: 'scale(1) translate(50%, -50%)',
      transformOrigin: '100% 0%',
      transition: theme.transitions.create('transform', {
        easing: theme.transitions.easing.easeInOut,
        duration: theme.transitions.duration.enteringScreen
      })
    },

    /* Styles applied to the root element if `color="primary"`. */
    colorPrimary: {
      backgroundColor: theme.palette.primary.main,
      color: theme.palette.primary.contrastText
    },

    /* Styles applied to the root element if `color="secondary"`. */
    colorSecondary: {
      backgroundColor: theme.palette.secondary.main,
      color: theme.palette.secondary.contrastText
    },

    /* Styles applied to the root element if `color="error"`. */
    colorError: {
      backgroundColor: theme.palette.error.main,
      color: theme.palette.error.contrastText
    },

    /* Styles applied to the badge `span` element if `invisible={true}`. */
    invisible: {
      transition: theme.transitions.create('transform', {
        easing: theme.transitions.easing.easeInOut,
        duration: theme.transitions.duration.leavingScreen
      }),
      transform: 'scale(0) translate(50%, -50%)',
      transformOrigin: '100% 0%'
    },

    /* Styles applied to the root element if `variant="dot"`. */
    dot: {
      height: 6,
      minWidth: 6,
      padding: 0
    }
  };
};
var Badge = React.forwardRef(function Badge(props, ref) {
  var badgeContent = props.badgeContent,
      children = props.children,
      classes = props.classes,
      className = props.className,
      _props$color = props.color,
      color = _props$color === void 0 ? 'default' : _props$color,
      _props$component = props.component,
      ComponentProp = _props$component === void 0 ? 'span' : _props$component,
      invisibleProp = props.invisible,
      _props$max = props.max,
      max = _props$max === void 0 ? 99 : _props$max,
      _props$showZero = props.showZero,
      showZero = _props$showZero === void 0 ? false : _props$showZero,
      _props$variant = props.variant,
      variant = _props$variant === void 0 ? 'standard' : _props$variant,
      other = _objectWithoutProperties(props, ["badgeContent", "children", "classes", "className", "color", "component", "invisible", "max", "showZero", "variant"]);

  var invisible = invisibleProp;

  if (invisibleProp == null && (badgeContent === 0 && !showZero || badgeContent == null && variant !== 'dot')) {
    invisible = true;
  }

  var displayValue = '';

  if (variant !== 'dot') {
    displayValue = badgeContent > max ? "".concat(max, "+") : badgeContent;
  }

  return React.createElement(ComponentProp, _extends({
    className: clsx(classes.root, className),
    ref: ref
  }, other), children, React.createElement("span", {
    className: clsx(classes.badge, color !== 'default' && classes["color".concat(capitalize(color))], invisible && classes.invisible, {
      dot: classes.dot
    }[variant])
  }, displayValue));
});
process.env.NODE_ENV !== "production" ? Badge.propTypes = {
  /**
   * The content rendered within the badge.
   */
  badgeContent: PropTypes.node,

  /**
   * The badge will be added relative to this node.
   */
  children: PropTypes.node.isRequired,

  /**
   * Override or extend the styles applied to the component.
   * See [CSS API](#css) below for more details.
   */
  classes: PropTypes.object.isRequired,

  /**
   * @ignore
   */
  className: PropTypes.string,

  /**
   * The color of the component. It supports those theme colors that make sense for this component.
   */
  color: PropTypes.oneOf(['default', 'primary', 'secondary', 'error']),

  /**
   * The component used for the root node.
   * Either a string to use a DOM element or a component.
   */
  component: PropTypes.elementType,

  /**
   * If `true`, the badge will be invisible.
   */
  invisible: PropTypes.bool,

  /**
   * Max count to show.
   */
  max: PropTypes.number,

  /**
   * Controls whether the badge is hidden when `badgeContent` is zero.
   */
  showZero: PropTypes.bool,

  /**
   * The variant to use.
   */
  variant: PropTypes.oneOf(['standard', 'dot'])
} : void 0;
export default withStyles(styles, {
  name: 'MuiBadge'
})(Badge);