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

import _extends from "@babel/runtime/helpers/esm/extends";
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
import * as React from 'react';
import PropTypes from 'prop-types';
import clsx from 'clsx';
import ArrowDownwardIcon from '../internal/svg-icons/ArrowDownward';
import withStyles from '../styles/withStyles';
import ButtonBase from '../ButtonBase';
import capitalize from '../utils/capitalize';
export const styles = theme => ({
  /* Styles applied to the root element. */
  root: {
    cursor: 'pointer',
    display: 'inline-flex',
    justifyContent: 'flex-start',
    flexDirection: 'inherit',
    alignItems: 'center',
    '&:focus': {
      color: theme.palette.text.secondary
    },
    '&:hover': {
      color: theme.palette.text.secondary,
      '& $icon': {
        opacity: 0.5
      }
    },
    '&$active': {
      color: theme.palette.text.primary,
      // && instead of & is a workaround for https://github.com/cssinjs/jss/issues/1045
      '&& $icon': {
        opacity: 1,
        color: theme.palette.text.secondary
      }
    }
  },

  /* Pseudo-class applied to the root element if `active={true}`. */
  active: {},

  /* Styles applied to the icon component. */
  icon: {
    fontSize: 18,
    marginRight: 4,
    marginLeft: 4,
    opacity: 0,
    transition: theme.transitions.create(['opacity', 'transform'], {
      duration: theme.transitions.duration.shorter
    }),
    userSelect: 'none'
  },

  /* Styles applied to the icon component if `direction="desc"`. */
  iconDirectionDesc: {
    transform: 'rotate(0deg)'
  },

  /* Styles applied to the icon component if `direction="asc"`. */
  iconDirectionAsc: {
    transform: 'rotate(180deg)'
  }
});
/**
 * A button based label for placing inside `TableCell` for column sorting.
 */

const TableSortLabel = /*#__PURE__*/React.forwardRef(function TableSortLabel(props, ref) {
  const {
    active = false,
    children,
    classes,
    className,
    direction = 'asc',
    hideSortIcon = false,
    IconComponent = ArrowDownwardIcon
  } = props,
        other = _objectWithoutPropertiesLoose(props, ["active", "children", "classes", "className", "direction", "hideSortIcon", "IconComponent"]);

  return /*#__PURE__*/React.createElement(ButtonBase, _extends({
    className: clsx(classes.root, className, active && classes.active),
    component: "span",
    disableRipple: true,
    ref: ref
  }, other), children, hideSortIcon && !active ? null : /*#__PURE__*/React.createElement(IconComponent, {
    className: clsx(classes.icon, classes[`iconDirection${capitalize(direction)}`])
  }));
});
process.env.NODE_ENV !== "production" ? TableSortLabel.propTypes = {
  /**
   * 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) below for more details.
   */
  classes: PropTypes.object.isRequired,

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

  /**
   * The current sort direction.
   */
  direction: PropTypes.oneOf(['asc', 'desc']),

  /**
   * Hide sort icon when active is false.
   */
  hideSortIcon: PropTypes.bool,

  /**
   * Sort icon to use.
   */
  IconComponent: PropTypes.elementType
} : void 0;
export default withStyles(styles, {
  name: 'MuiTableSortLabel'
})(TableSortLabel);