packages/mui-material/src/StepContent/StepContent.js

'use client';
import * as React from 'react';
import PropTypes from 'prop-types';
import clsx from 'clsx';
import composeClasses from '@mui/utils/composeClasses';
import { styled } from '../zero-styled';
import memoTheme from '../utils/memoTheme';
import { useDefaultProps } from '../DefaultPropsProvider';
import Collapse from '../Collapse';
import StepperContext from '../Stepper/StepperContext';
import StepContext from '../Step/StepContext';
import { getStepContentUtilityClass } from './stepContentClasses';
import useSlot from '../utils/useSlot';

const useUtilityClasses = (ownerState) => {
  const { classes, last } = ownerState;

  const slots = { root: ['root', last && 'last'], transition: ['transition'] };

  return composeClasses(slots, getStepContentUtilityClass, classes);
};

const StepContentRoot = styled('div', {
  name: 'MuiStepContent',
  slot: 'Root',
  overridesResolver: (props, styles) => {
    const { ownerState } = props;

    return [styles.root, ownerState.last && styles.last];
  },
})(
  memoTheme(({ theme }) => ({
    marginLeft: 12, // half icon
    paddingLeft: 8 + 12, // margin + half icon
    paddingRight: 8,
    borderLeft: theme.vars
      ? `1px solid ${theme.vars.palette.StepContent.border}`
      : `1px solid ${
          theme.palette.mode === 'light' ? theme.palette.grey[400] : theme.palette.grey[600]
        }`,
    variants: [
      {
        props: { last: true },
        style: {
          borderLeft: 'none',
        },
      },
    ],
  })),
);

const StepContentTransition = styled(Collapse, {
  name: 'MuiStepContent',
  slot: 'Transition',
  overridesResolver: (props, styles) => styles.transition,
})({});

const StepContent = React.forwardRef(function StepContent(inProps, ref) {
  const props = useDefaultProps({ props: inProps, name: 'MuiStepContent' });
  const {
    children,
    className,
    TransitionComponent = Collapse,
    transitionDuration: transitionDurationProp = 'auto',
    TransitionProps,
    slots = {},
    slotProps = {},
    ...other
  } = props;

  const { orientation } = React.useContext(StepperContext);
  const { active, last, expanded } = React.useContext(StepContext);

  const ownerState = { ...props, last };
  const classes = useUtilityClasses(ownerState);

  if (process.env.NODE_ENV !== 'production') {
    if (orientation !== 'vertical') {
      console.error('MUI: <StepContent /> is only designed for use with the vertical stepper.');
    }
  }

  let transitionDuration = transitionDurationProp;

  if (transitionDurationProp === 'auto' && !TransitionComponent.muiSupportAuto) {
    transitionDuration = undefined;
  }

  const externalForwardedProps = {
    slots,
    slotProps: { transition: TransitionProps, ...slotProps },
  };

  const [TransitionSlot, transitionProps] = useSlot('transition', {
    elementType: StepContentTransition,
    externalForwardedProps,
    ownerState,
    className: classes.transition,
    additionalProps: {
      in: active || expanded,
      timeout: transitionDuration,
      unmountOnExit: true,
    },
  });

  return (
    <StepContentRoot
      className={clsx(classes.root, className)}
      ref={ref}
      ownerState={ownerState}
      {...other}
    >
      <TransitionSlot as={TransitionComponent} {...transitionProps}>
        {children}
      </TransitionSlot>
    </StepContentRoot>
  );
});

StepContent.propTypes /* remove-proptypes */ = {
  // ┌────────────────────────────── Warning ──────────────────────────────┐
  // │ These PropTypes are generated from the TypeScript type definitions. │
  // │    To update them, edit the d.ts file and run `pnpm 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 props used for each slot inside.
   * @default {}
   */
  slotProps: PropTypes.shape({
    transition: PropTypes.oneOfType([PropTypes.func, PropTypes.object]),
  }),
  /**
   * The components used for each slot inside.
   * @default {}
   */
  slots: PropTypes.shape({
    transition: PropTypes.elementType,
  }),
  /**
   * 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,
  ]),
  /**
   * The component used for the transition.
   * [Follow this guide](https://mui.com/material-ui/transitions/#transitioncomponent-prop) to learn more about the requirements for this component.
   * @default Collapse
   * @deprecated Use `slots.transition` instead. This prop will be removed in v7. [How to migrate](/material-ui/migration/migrating-from-deprecated-apis/).
   */
  TransitionComponent: PropTypes.elementType,
  /**
   * Adjust the duration of the content expand transition.
   * Passed as a prop to the transition component.
   *
   * Set to 'auto' to automatically calculate transition time based on height.
   * @default 'auto'
   */
  transitionDuration: PropTypes.oneOfType([
    PropTypes.oneOf(['auto']),
    PropTypes.number,
    PropTypes.shape({
      appear: PropTypes.number,
      enter: PropTypes.number,
      exit: PropTypes.number,
    }),
  ]),
  /**
   * Props applied to the transition element.
   * By default, the element is based on this [`Transition`](https://reactcommunity.org/react-transition-group/transition/) component.
   * @deprecated Use `slotProps.transition` instead. This prop will be removed in v7. See [Migrating from deprecated APIs](/material-ui/migration/migrating-from-deprecated-apis/) for more details.
   */
  TransitionProps: PropTypes.object,
};

export default StepContent;