react-simpler-select/es/index.js

React component that renders a select. Supports optgroups, multiple selections.

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

import React from 'react';
import PropTypes from 'prop-types';

// Filters props to remove before transmission to the select element.
var filterProps = function filterProps(props) {
  return Object.keys(props).filter(function (k) {
    return ['onChange', 'options', 'placeholder'].indexOf(k) === -1;
  }).reduce(function (filtered, k) {
    // eslint-disable-next-line no-param-reassign
    filtered[k] = props[k];
    return filtered;
  }, {});
};

var renderOption = function renderOption(option) {
  return React.createElement(
    'option',
    {
      key: option.value,
      value: option.value,
      disabled: option.disabled
    },
    option.label
  );
};

var renderOptions = function renderOptions(options, placeholder) {
  var children = options.map(function (item) {
    var child = void 0;

    if (item.options) {
      child = React.createElement(
        'optgroup',
        { label: item.title, key: item.id },
        item.options.map(renderOption)
      );
    } else {
      child = renderOption(item);
    }

    return child;
  });

  if (placeholder) {
    children.unshift(renderOption({ label: placeholder, value: '', disabled: true }));
  }

  return children;
};

var handleChange = function handleChange(multiple, onChange, e) {
  var value = void 0;

  if (multiple) {
    value = Array.prototype.slice.call(e.target.options).filter(function (option) {
      return option.selected;
    }).map(function (option) {
      return option.value;
    });
  } else {
    value = e.target.value;
  }

  onChange(value);
};

/**
 * The Select component. Renders to a plain HTML <select>.
 */

var propTypes = {
  onChange: PropTypes.func.isRequired,
  options: PropTypes.array.isRequired,
  placeholder: PropTypes.string,
  value: PropTypes.any
};

var defaultProps = {
  placeholder: null,
  value: null
};

var Select = function Select(props) {
  var value = props.value,
      options = props.options,
      placeholder = props.placeholder,
      onChange = props.onChange;

  var multiple = Array.isArray(value);

  return React.createElement(
    'select',
    _extends({}, filterProps(props), {
      onChange: handleChange.bind(null, multiple, onChange),
      multiple: multiple
    }),
    renderOptions(options, placeholder)
  );
};

Select.propTypes = propTypes;
Select.defaultProps = defaultProps;

export default Select;