@material-ui/core/es/TableSortLabel/TableSortLabel.js

React components that implement Google's Material Design.

import _extends from "@babel/runtime/helpers/builtin/extends";
import _objectWithoutProperties from "@babel/runtime/helpers/builtin/objectWithoutProperties";
// @inheritedComponent ButtonBase
import React from 'react';
import PropTypes from 'prop-types';
import classNames from 'classnames';
import ArrowDownwardIcon from '../internal/svg-icons/ArrowDownward';
import withStyles from '../styles/withStyles';
import ButtonBase from '../ButtonBase';
import { capitalize } from '../utils/helpers';
export const styles = theme => ({
  root: {
    cursor: 'pointer',
    display: 'inline-flex',
    justifyContent: 'flex-start',
    flexDirection: 'inherit',
    alignItems: 'center',
    '&:hover': {
      color: theme.palette.text.primary
    },
    '&:focus': {
      color: theme.palette.text.primary
    }
  },
  active: {
    color: theme.palette.text.primary,
    '& $icon': {
      opacity: 1
    }
  },
  icon: {
    height: 16,
    marginRight: 4,
    marginLeft: 4,
    opacity: 0,
    transition: theme.transitions.create(['opacity', 'transform'], {
      duration: theme.transitions.duration.shorter
    }),
    userSelect: 'none',
    width: 16
  },
  iconDirectionDesc: {
    transform: 'rotate(0deg)'
  },
  iconDirectionAsc: {
    transform: 'rotate(180deg)'
  }
});
/**
 * A button based label for placing inside `TableCell` for column sorting.
 */

function TableSortLabel(props) {
  const {
    active,
    classes,
    className,
    children,
    direction
  } = props,
        other = _objectWithoutProperties(props, ["active", "classes", "className", "children", "direction"]);

  return React.createElement(ButtonBase, _extends({
    className: classNames(classes.root, {
      [classes.active]: active
    }, className),
    component: "span",
    disableRipple: true
  }, other), children, React.createElement(ArrowDownwardIcon, {
    className: classNames(classes.icon, classes[`iconDirection${capitalize(direction)}`])
  }));
}

TableSortLabel.propTypes = process.env.NODE_ENV !== "production" ? {
  /**
   * If `true`, the label will have the active styling (should be true for the sorted column).
   */
  active: PropTypes.bool,

  /**
   * Label contents, the arrow will be appended automatically.
   */
  children: PropTypes.node,

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

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

  /**
   * The current sort direction.
   */
  direction: PropTypes.oneOf(['asc', 'desc'])
} : {};
TableSortLabel.defaultProps = {
  active: false,
  direction: 'desc'
};
export default withStyles(styles, {
  name: 'MuiTableSortLabel'
})(TableSortLabel);