'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.PopperPlacements = exports.keyCodes = exports.TransitionStatuses = exports.TransitionPropTypeKeys = exports.TransitionTimeouts = undefined;
exports.getScrollbarWidth = getScrollbarWidth;
exports.setScrollbarWidth = setScrollbarWidth;
exports.isBodyOverflowing = isBodyOverflowing;
exports.getOriginalBodyPadding = getOriginalBodyPadding;
exports.conditionallyUpdateScrollbar = conditionallyUpdateScrollbar;
exports.mapToCssModules = mapToCssModules;
exports.omit = omit;
exports.pick = pick;
exports.warnOnce = warnOnce;
exports.deprecated = deprecated;
exports.DOMElement = DOMElement;
exports.getTarget = getTarget;

var _lodash = require('lodash.isfunction');

var _lodash2 = _interopRequireDefault(_lodash);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

// https://github.com/twbs/bootstrap/blob/v4.0.0-alpha.4/js/src/modal.js#L436-L443
function getScrollbarWidth() {
  var scrollDiv = document.createElement('div');
  // .modal-scrollbar-measure styles // https://github.com/twbs/bootstrap/blob/v4.0.0-alpha.4/scss/_modal.scss#L106-L113
  scrollDiv.style.position = 'absolute';
  scrollDiv.style.top = '-9999px';
  scrollDiv.style.width = '50px';
  scrollDiv.style.height = '50px';
  scrollDiv.style.overflow = 'scroll';
  document.body.appendChild(scrollDiv);
  var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth;
  document.body.removeChild(scrollDiv);
  return scrollbarWidth;
}

function setScrollbarWidth(padding) {
  document.body.style.paddingRight = padding > 0 ? padding + 'px' : null;
}

function isBodyOverflowing() {
  return document.body.clientWidth < window.innerWidth;
}

function getOriginalBodyPadding() {
  return parseInt(window.getComputedStyle(document.body, null).getPropertyValue('padding-right') || 0, 10);
}

function conditionallyUpdateScrollbar() {
  var scrollbarWidth = getScrollbarWidth();
  // https://github.com/twbs/bootstrap/blob/v4.0.0-alpha.6/js/src/modal.js#L433
  var fixedContent = document.querySelectorAll('.fixed-top, .fixed-bottom, .is-fixed, .sticky-top')[0];
  var bodyPadding = fixedContent ? parseInt(fixedContent.style.paddingRight || 0, 10) : 0;

  if (isBodyOverflowing()) {
    setScrollbarWidth(bodyPadding + scrollbarWidth);
  }
}

function mapToCssModules(className, cssModule) {
  if (!cssModule) return className;
  return className.split(' ').map(function (c) {
    return cssModule[c] || c;
  }).join(' ');
}

/**
 * Returns a new object with the key/value pairs from `obj` that are not in the array `omitKeys`.
 */
function omit(obj, omitKeys) {
  var result = {};
  Object.keys(obj).forEach(function (key) {
    if (omitKeys.indexOf(key) === -1) {
      result[key] = obj[key];
    }
  });
  return result;
}

/**
 * Returns a filtered copy of an object with only the specified keys.
 */
function pick(obj, keys) {
  var pickKeys = Array.isArray(keys) ? keys : [keys];
  var length = pickKeys.length;
  var key = void 0;
  var result = {};

  while (length > 0) {
    length -= 1;
    key = pickKeys[length];
    result[key] = obj[key];
  }
  return result;
}

var warned = {};

function warnOnce(message) {
  if (!warned[message]) {
    /* istanbul ignore else */
    if (typeof console !== 'undefined') {
      console.error(message); // eslint-disable-line no-console
    }
    warned[message] = true;
  }
}

function deprecated(propType, explanation) {
  return function validate(props, propName, componentName) {
    if (props[propName] !== null && typeof props[propName] !== 'undefined') {
      warnOnce('"' + propName + '" property of "' + componentName + '" has been deprecated.\n' + explanation);
    }

    for (var _len = arguments.length, rest = Array(_len > 3 ? _len - 3 : 0), _key = 3; _key < _len; _key++) {
      rest[_key - 3] = arguments[_key];
    }

    return propType.apply(undefined, [props, propName, componentName].concat(rest));
  };
}

function DOMElement(props, propName, componentName) {
  if (!(props[propName] instanceof Element)) {
    return new Error('Invalid prop `' + propName + '` supplied to `' + componentName + '`. Expected prop to be an instance of Element. Validation failed.');
  }
}

function getTarget(target) {
  if ((0, _lodash2.default)(target)) {
    return target();
  }

  if (typeof target === 'string' && document) {
    var selection = document.querySelector(target);
    if (selection === null) {
      selection = document.querySelector('#' + target);
    }
    if (selection === null) {
      throw new Error('The target \'' + target + '\' could not be identified in the dom, tip: check spelling');
    }
    return selection;
  }

  return target;
}

/* eslint key-spacing: ["error", { afterColon: true, align: "value" }] */
// These are all setup to match what is in the bootstrap _variables.scss
// https://github.com/twbs/bootstrap/blob/v4-dev/scss/_variables.scss
var TransitionTimeouts = exports.TransitionTimeouts = {
  Fade: 150, // $transition-fade
  Collapse: 350, // $transition-collapse
  Modal: 300, // $modal-transition
  Carousel: 600 // $carousel-transition
};

// Duplicated Transition.propType keys to ensure that Reactstrap builds
// for distribution properly exclude these keys for nested child HTML attributes
// since `react-transition-group` removes propTypes in production builds.
var TransitionPropTypeKeys = exports.TransitionPropTypeKeys = ['in', 'mountOnEnter', 'unmountOnExit', 'appear', 'enter', 'exit', 'timeout', 'onEnter', 'onEntering', 'onEntered', 'onExit', 'onExiting', 'onExited'];

var TransitionStatuses = exports.TransitionStatuses = {
  ENTERING: 'entering',
  ENTERED: 'entered',
  EXITING: 'exiting',
  EXITED: 'exited'
};

var keyCodes = exports.keyCodes = {
  esc: 27,
  space: 32,
  tab: 9,
  up: 38,
  down: 40
};

var PopperPlacements = exports.PopperPlacements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];