@mui/material/modern/Link/Link.js

import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
import _extends from "@babel/runtime/helpers/esm/extends";
const _excluded = ["className", "color", "component", "onBlur", "onFocus", "TypographyClasses", "underline", "variant", "sx"];
import * as React from 'react';
import PropTypes from 'prop-types';
import clsx from 'clsx';
import { elementTypeAcceptingRef } from '@mui/utils';
import { unstable_composeClasses as composeClasses } from '@mui/base';
import capitalize from '../utils/capitalize';
import styled from '../styles/styled';
import useThemeProps from '../styles/useThemeProps';
import useIsFocusVisible from '../utils/useIsFocusVisible';
import useForkRef from '../utils/useForkRef';
import Typography from '../Typography';
import linkClasses, { getLinkUtilityClass } from './linkClasses';
import getTextDecoration, { colorTransformations } from './getTextDecoration';
import { jsx as _jsx } from "react/jsx-runtime";

const useUtilityClasses = ownerState => {
  const {
    classes,
    component,
    focusVisible,
    underline
  } = ownerState;
  const slots = {
    root: ['root', `underline${capitalize(underline)}`, component === 'button' && 'button', focusVisible && 'focusVisible']
  };
  return composeClasses(slots, getLinkUtilityClass, classes);
};

const LinkRoot = styled(Typography, {
  name: 'MuiLink',
  slot: 'Root',
  overridesResolver: (props, styles) => {
    const {
      ownerState
    } = props;
    return [styles.root, styles[`underline${capitalize(ownerState.underline)}`], ownerState.component === 'button' && styles.button];
  }
})(({
  theme,
  ownerState
}) => {
  return _extends({}, ownerState.underline === 'none' && {
    textDecoration: 'none'
  }, ownerState.underline === 'hover' && {
    textDecoration: 'none',
    '&:hover': {
      textDecoration: 'underline'
    }
  }, ownerState.underline === 'always' && _extends({
    textDecoration: 'underline'
  }, ownerState.color !== 'inherit' && {
    textDecorationColor: getTextDecoration({
      theme,
      ownerState
    })
  }, {
    '&:hover': {
      textDecorationColor: 'inherit'
    }
  }), ownerState.component === 'button' && {
    position: 'relative',
    WebkitTapHighlightColor: 'transparent',
    backgroundColor: 'transparent',
    // Reset default value
    // We disable the focus ring for mouse, touch and keyboard users.
    outline: 0,
    border: 0,
    margin: 0,
    // Remove the margin in Safari
    borderRadius: 0,
    padding: 0,
    // Remove the padding in Firefox
    cursor: 'pointer',
    userSelect: 'none',
    verticalAlign: 'middle',
    MozAppearance: 'none',
    // Reset
    WebkitAppearance: 'none',
    // Reset
    '&::-moz-focus-inner': {
      borderStyle: 'none' // Remove Firefox dotted outline.

    },
    [`&.${linkClasses.focusVisible}`]: {
      outline: 'auto'
    }
  });
});
const Link = /*#__PURE__*/React.forwardRef(function Link(inProps, ref) {
  const props = useThemeProps({
    props: inProps,
    name: 'MuiLink'
  });

  const {
    className,
    color = 'primary',
    component = 'a',
    onBlur,
    onFocus,
    TypographyClasses,
    underline = 'always',
    variant = 'inherit',
    sx
  } = props,
        other = _objectWithoutPropertiesLoose(props, _excluded);

  const {
    isFocusVisibleRef,
    onBlur: handleBlurVisible,
    onFocus: handleFocusVisible,
    ref: focusVisibleRef
  } = useIsFocusVisible();
  const [focusVisible, setFocusVisible] = React.useState(false);
  const handlerRef = useForkRef(ref, focusVisibleRef);

  const handleBlur = event => {
    handleBlurVisible(event);

    if (isFocusVisibleRef.current === false) {
      setFocusVisible(false);
    }

    if (onBlur) {
      onBlur(event);
    }
  };

  const handleFocus = event => {
    handleFocusVisible(event);

    if (isFocusVisibleRef.current === true) {
      setFocusVisible(true);
    }

    if (onFocus) {
      onFocus(event);
    }
  };

  const ownerState = _extends({}, props, {
    color,
    component,
    focusVisible,
    underline,
    variant
  });

  const classes = useUtilityClasses(ownerState);
  return /*#__PURE__*/_jsx(LinkRoot, _extends({
    color: color,
    className: clsx(classes.root, className),
    classes: TypographyClasses,
    component: component,
    onBlur: handleBlur,
    onFocus: handleFocus,
    ref: handlerRef,
    ownerState: ownerState,
    variant: variant,
    sx: [...(!Object.keys(colorTransformations).includes(color) ? [{
      color
    }] : []), ...(Array.isArray(sx) ? sx : [sx])]
  }, other));
});
process.env.NODE_ENV !== "production" ? Link.propTypes
/* remove-proptypes */
= {
  // ----------------------------- Warning --------------------------------
  // | These PropTypes are generated from the TypeScript type definitions |
  // |     To update them edit the d.ts file and run "yarn proptypes"     |
  // ----------------------------------------------------------------------

  /**
   * The content of the component.
   */
  children: PropTypes.node,

  /**
   * Override or extend the styles applied to the component.
   */
  classes: PropTypes.object,

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

  /**
   * The color of the link.
   * @default 'primary'
   */
  color: PropTypes
  /* @typescript-to-proptypes-ignore */
  .any,

  /**
   * The component used for the root node.
   * Either a string to use a HTML element or a component.
   */
  component: elementTypeAcceptingRef,

  /**
   * @ignore
   */
  onBlur: PropTypes.func,

  /**
   * @ignore
   */
  onFocus: PropTypes.func,

  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx: PropTypes.oneOfType([PropTypes.arrayOf(PropTypes.oneOfType([PropTypes.func, PropTypes.object, PropTypes.bool])), PropTypes.func, PropTypes.object]),

  /**
   * `classes` prop applied to the [`Typography`](/material-ui/api/typography/) element.
   */
  TypographyClasses: PropTypes.object,

  /**
   * Controls when the link should have an underline.
   * @default 'always'
   */
  underline: PropTypes.oneOf(['always', 'hover', 'none']),

  /**
   * Applies the theme typography styles.
   * @default 'inherit'
   */
  variant: PropTypes
  /* @typescript-to-proptypes-ignore */
  .oneOfType([PropTypes.oneOf(['body1', 'body2', 'button', 'caption', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'inherit', 'overline', 'subtitle1', 'subtitle2']), PropTypes.string])
} : void 0;
export default Link;