react-bootstrap/src/Col.js

Bootstrap 3 components build with React

import React from 'react';
import classNames from 'classnames';
import styleMaps from './styleMaps';

const Col = React.createClass({
  propTypes: {
    xs: React.PropTypes.number,
    sm: React.PropTypes.number,
    md: React.PropTypes.number,
    lg: React.PropTypes.number,
    xsOffset: React.PropTypes.number,
    smOffset: React.PropTypes.number,
    mdOffset: React.PropTypes.number,
    lgOffset: React.PropTypes.number,
    xsPush: React.PropTypes.number,
    smPush: React.PropTypes.number,
    mdPush: React.PropTypes.number,
    lgPush: React.PropTypes.number,
    xsPull: React.PropTypes.number,
    smPull: React.PropTypes.number,
    mdPull: React.PropTypes.number,
    lgPull: React.PropTypes.number,
    componentClass: React.PropTypes.node.isRequired
  },

  getDefaultProps() {
    return {
      componentClass: 'div'
    };
  },

  render() {
    let ComponentClass = this.props.componentClass;
    let classes = {};

    Object.keys(styleMaps.SIZES).forEach(function (key) {
      let size = styleMaps.SIZES[key];
      let prop = size;
      let classPart = size + '-';

      if (this.props[prop]) {
        classes['col-' + classPart + this.props[prop]] = true;
      }

      prop = size + 'Offset';
      classPart = size + '-offset-';
      if (this.props[prop] >= 0) {
        classes['col-' + classPart + this.props[prop]] = true;
      }

      prop = size + 'Push';
      classPart = size + '-push-';
      if (this.props[prop] >= 0) {
        classes['col-' + classPart + this.props[prop]] = true;
      }

      prop = size + 'Pull';
      classPart = size + '-pull-';
      if (this.props[prop] >= 0) {
        classes['col-' + classPart + this.props[prop]] = true;
      }
    }, this);

    return (
      <ComponentClass {...this.props} className={classNames(this.props.className, classes)}>
        {this.props.children}
      </ComponentClass>
    );
  }
});

export default Col;