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

React components that implement Google's Material Design.

import _extends from "@babel/runtime/helpers/extends";
import _objectWithoutProperties from "@babel/runtime/helpers/objectWithoutProperties";
import React from 'react';
import PropTypes from 'prop-types';
import warning from 'warning';
import classNames from 'classnames';
import Collapse from '../Collapse';
import withStyles from '../styles/withStyles';
export const styles = theme => ({
  /* Styles applied to the root element. */
  root: {
    marginTop: 8,
    marginLeft: 12,
    // half icon
    paddingLeft: 8 + 12,
    // margin + half icon
    paddingRight: 8,
    borderLeft: `1px solid ${theme.palette.type === 'light' ? theme.palette.grey[400] : theme.palette.grey[600]}`
  },

  /* Styles applied to the root element if `last={true}` (controlled by `Step`). */
  last: {
    borderLeft: 'none'
  },

  /* Styles applied to the Transition component. */
  transition: {}
});

function StepContent(props) {
  const {
    active,
    alternativeLabel,
    children,
    classes,
    className,
    completed,
    last,
    optional,
    orientation,
    TransitionComponent,
    transitionDuration: transitionDurationProp,
    TransitionProps
  } = props,
        other = _objectWithoutProperties(props, ["active", "alternativeLabel", "children", "classes", "className", "completed", "last", "optional", "orientation", "TransitionComponent", "transitionDuration", "TransitionProps"]);

  process.env.NODE_ENV !== "production" ? warning(orientation === 'vertical', 'Material-UI: <StepContent /> is only designed for use with the vertical stepper.') : void 0;
  let transitionDuration = transitionDurationProp;

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

  return React.createElement("div", _extends({
    className: classNames(classes.root, {
      [classes.last]: last
    }, className)
  }, other), React.createElement(TransitionComponent, _extends({
    in: active,
    className: classes.transition,
    timeout: transitionDuration,
    unmountOnExit: true
  }, TransitionProps), children));
}

StepContent.propTypes = process.env.NODE_ENV !== "production" ? {
  /**
   * @ignore
   * Expands the content.
   */
  active: PropTypes.bool,

  /**
   * @ignore
   * Set internally by Step when it's supplied with the alternativeLabel property.
   */
  alternativeLabel: PropTypes.bool,

  /**
   * Step content.
   */
  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,

  /**
   * @ignore
   */
  completed: PropTypes.bool,

  /**
   * @ignore
   */
  last: PropTypes.bool,

  /**
   * @ignore
   * Set internally by Step when it's supplied with the optional property.
   */
  optional: PropTypes.bool,

  /**
   * @ignore
   */
  orientation: PropTypes.oneOf(['horizontal', 'vertical']),

  /**
   * Collapse component.
   */
  TransitionComponent: PropTypes.func,

  /**
   * Adjust the duration of the content expand transition.
   * Passed as a property to the transition component.
   *
   * Set to 'auto' to automatically calculate transition time based on height.
   */
  transitionDuration: PropTypes.oneOfType([PropTypes.number, PropTypes.shape({
    enter: PropTypes.number,
    exit: PropTypes.number
  }), PropTypes.oneOf(['auto'])]),

  /**
   * Properties applied to the `Transition` element.
   */
  TransitionProps: PropTypes.object
} : {};
StepContent.defaultProps = {
  TransitionComponent: Collapse,
  transitionDuration: 'auto'
};
export default withStyles(styles, {
  name: 'MuiStepContent'
})(StepContent);