/*! tether 1.4.7 */

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(function(root, factory) {

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if (typeof define === 'function' && define.amd) {

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define([], factory);

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} else if (typeof exports === 'object') {

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module.exports = factory();

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} else {

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root.Tether = factory();

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}

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}(this, function() {

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'use strict';

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var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

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var TetherBase = undefined;

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if (typeof TetherBase === 'undefined') {

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TetherBase = { modules: [] };

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}

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var zeroElement = null;

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// Same as native getBoundingClientRect, except it takes into account parent <frame> offsets

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// if the element lies within a nested document (<frame> or <iframe>-like).

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function getActualBoundingClientRect(node) {

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var boundingRect = node.getBoundingClientRect();

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// The original object returned by getBoundingClientRect is immutable, so we clone it

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// We can't use extend because the properties are not considered part of the object by hasOwnProperty in IE9

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var rect = {};

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for (var k in boundingRect) {

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rect[k] = boundingRect[k];

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}

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try {

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if (node.ownerDocument !== document) {

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var _frameElement = node.ownerDocument.defaultView.frameElement;

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if (_frameElement) {

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var frameRect = getActualBoundingClientRect(_frameElement);

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rect.top += frameRect.top;

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rect.bottom += frameRect.top;

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rect.left += frameRect.left;

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rect.right += frameRect.left;

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}

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}

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} catch (err) {

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// Ignore "Access is denied" in IE11/Edge

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}

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return rect;

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}

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function getScrollParents(el) {

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// In firefox if the el is inside an iframe with display: none; window.getComputedStyle() will return null;

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// https://bugzilla.mozilla.org/show_bug.cgi?id=548397

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var computedStyle = getComputedStyle(el) || {};

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var position = computedStyle.position;

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var parents = [];

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if (position === 'fixed') {

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return [el];

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}

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var parent = el;

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while ((parent = parent.parentNode) && parent && parent.nodeType === 1) {

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var style = undefined;

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try {

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style = getComputedStyle(parent);

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} catch (err) {}

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if (typeof style === 'undefined' || style === null) {

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parents.push(parent);

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return parents;

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}

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var _style = style;

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var overflow = _style.overflow;

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var overflowX = _style.overflowX;

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var overflowY = _style.overflowY;

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if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {

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if (position !== 'absolute' || ['relative', 'absolute', 'fixed'].indexOf(style.position) >= 0) {

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parents.push(parent);

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}

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}

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}

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parents.push(el.ownerDocument.body);

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// If the node is within a frame, account for the parent window scroll

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if (el.ownerDocument !== document) {

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parents.push(el.ownerDocument.defaultView);

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}

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return parents;

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}

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var uniqueId = (function () {

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var id = 0;

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return function () {

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return ++id;

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};

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})();

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var zeroPosCache = {};

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var getOrigin = function getOrigin() {

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// getBoundingClientRect is unfortunately too accurate. It introduces a pixel or two of

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// jitter as the user scrolls that messes with our ability to detect if two positions

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// are equivilant or not. We place an element at the top left of the page that will

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// get the same jitter, so we can cancel the two out.

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var node = zeroElement;

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if (!node || !document.body.contains(node)) {

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node = document.createElement('div');

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node.setAttribute('data-tether-id', uniqueId());

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extend(node.style, {

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top: 0,

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left: 0,

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position: 'absolute'

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});

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document.body.appendChild(node);

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zeroElement = node;

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}

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var id = node.getAttribute('data-tether-id');

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if (typeof zeroPosCache[id] === 'undefined') {

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zeroPosCache[id] = getActualBoundingClientRect(node);

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// Clear the cache when this position call is done

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defer(function () {

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delete zeroPosCache[id];

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});

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}

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return zeroPosCache[id];

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};

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function removeUtilElements() {

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if (zeroElement) {

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document.body.removeChild(zeroElement);

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}

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zeroElement = null;

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};

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function getBounds(el) {

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var doc = undefined;

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if (el === document) {

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doc = document;

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el = document.documentElement;

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} else {

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doc = el.ownerDocument;

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}

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var docEl = doc.documentElement;

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var box = getActualBoundingClientRect(el);

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var origin = getOrigin();

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box.top -= origin.top;

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box.left -= origin.left;

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if (typeof box.width === 'undefined') {

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box.width = document.body.scrollWidth - box.left - box.right;

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}

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if (typeof box.height === 'undefined') {

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box.height = document.body.scrollHeight - box.top - box.bottom;

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}

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box.top = box.top - docEl.clientTop;

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box.left = box.left - docEl.clientLeft;

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box.right = doc.body.clientWidth - box.width - box.left;

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box.bottom = doc.body.clientHeight - box.height - box.top;

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return box;

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}

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function getOffsetParent(el) {

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return el.offsetParent || document.documentElement;

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}

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var _scrollBarSize = null;

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function getScrollBarSize() {

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if (_scrollBarSize) {

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return _scrollBarSize;

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}

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var inner = document.createElement('div');

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inner.style.width = '100%';

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inner.style.height = '200px';

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var outer = document.createElement('div');

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extend(outer.style, {

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position: 'absolute',

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top: 0,

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left: 0,

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pointerEvents: 'none',

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visibility: 'hidden',

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width: '200px',

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height: '150px',

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overflow: 'hidden'

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});

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outer.appendChild(inner);

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document.body.appendChild(outer);

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var widthContained = inner.offsetWidth;

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outer.style.overflow = 'scroll';

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var widthScroll = inner.offsetWidth;

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if (widthContained === widthScroll) {

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widthScroll = outer.clientWidth;

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}

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document.body.removeChild(outer);

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var width = widthContained - widthScroll;

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_scrollBarSize = { width: width, height: width };

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return _scrollBarSize;

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}

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function extend() {

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var out = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];

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var args = [];

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Array.prototype.push.apply(args, arguments);

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args.slice(1).forEach(function (obj) {

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if (obj) {

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for (var key in obj) {

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if (({}).hasOwnProperty.call(obj, key)) {

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out[key] = obj[key];

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}

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}

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}

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});

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return out;

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}

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function removeClass(el, name) {

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if (typeof el.classList !== 'undefined') {

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name.split(' ').forEach(function (cls) {

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if (cls.trim()) {

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el.classList.remove(cls);

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}

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});

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} else {

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var regex = new RegExp('(^| )' + name.split(' ').join('|') + '( |$)', 'gi');

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var className = getClassName(el).replace(regex, ' ');

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setClassName(el, className);

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}

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}

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function addClass(el, name) {

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if (typeof el.classList !== 'undefined') {

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name.split(' ').forEach(function (cls) {

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if (cls.trim()) {

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el.classList.add(cls);

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}

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});

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} else {

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removeClass(el, name);

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var cls = getClassName(el) + (' ' + name);

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setClassName(el, cls);

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}

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}

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function hasClass(el, name) {

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if (typeof el.classList !== 'undefined') {

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return el.classList.contains(name);

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}

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var className = getClassName(el);

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return new RegExp('(^| )' + name + '( |$)', 'gi').test(className);

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}

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function getClassName(el) {

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// Can't use just SVGAnimatedString here since nodes within a Frame in IE have

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// completely separately SVGAnimatedString base classes

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if (el.className instanceof el.ownerDocument.defaultView.SVGAnimatedString) {

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return el.className.baseVal;

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}

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return el.className;

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}

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function setClassName(el, className) {

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el.setAttribute('class', className);

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}

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function updateClasses(el, add, all) {

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// Of the set of 'all' classes, we need the 'add' classes, and only the

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// 'add' classes to be set.

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all.forEach(function (cls) {

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if (add.indexOf(cls) === -1 && hasClass(el, cls)) {

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removeClass(el, cls);

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}

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});

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add.forEach(function (cls) {

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if (!hasClass(el, cls)) {

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addClass(el, cls);

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}

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});

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}

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var deferred = [];

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var defer = function defer(fn) {

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deferred.push(fn);

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};

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var flush = function flush() {

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var fn = undefined;

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while (fn = deferred.pop()) {

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fn();

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}

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};

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var Evented = (function () {

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function Evented() {

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_classCallCheck(this, Evented);

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}

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_createClass(Evented, [{

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key: 'on',

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value: function on(event, handler, ctx) {

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var once = arguments.length <= 3 || arguments[3] === undefined ? false : arguments[3];

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if (typeof this.bindings === 'undefined') {

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this.bindings = {};

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}

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if (typeof this.bindings[event] === 'undefined') {

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this.bindings[event] = [];

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}

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this.bindings[event].push({ handler: handler, ctx: ctx, once: once });

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}

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}, {

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key: 'once',

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value: function once(event, handler, ctx) {

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this.on(event, handler, ctx, true);

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}

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}, {

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key: 'off',

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value: function off(event, handler) {

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if (typeof this.bindings === 'undefined' || typeof this.bindings[event] === 'undefined') {

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return;

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}

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if (typeof handler === 'undefined') {

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delete this.bindings[event];

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} else {

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var i = 0;

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while (i < this.bindings[event].length) {

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if (this.bindings[event][i].handler === handler) {

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this.bindings[event].splice(i, 1);

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} else {

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++i;

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}

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}

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}

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}

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}, {

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key: 'trigger',

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value: function trigger(event) {

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if (typeof this.bindings !== 'undefined' && this.bindings[event]) {

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var i = 0;

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for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {

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args[_key - 1] = arguments[_key];

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}

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while (i < this.bindings[event].length) {

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var _bindings$event$i = this.bindings[event][i];

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var handler = _bindings$event$i.handler;

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var ctx = _bindings$event$i.ctx;

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var once = _bindings$event$i.once;

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var context = ctx;

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if (typeof context === 'undefined') {

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context = this;

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}

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handler.apply(context, args);

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if (once) {

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this.bindings[event].splice(i, 1);

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} else {

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++i;

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}

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}

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}

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}

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}]);

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return Evented;

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})();

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TetherBase.Utils = {

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getActualBoundingClientRect: getActualBoundingClientRect,

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getScrollParents: getScrollParents,

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getBounds: getBounds,

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getOffsetParent: getOffsetParent,

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extend: extend,

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addClass: addClass,

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removeClass: removeClass,

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hasClass: hasClass,

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updateClasses: updateClasses,

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defer: defer,

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flush: flush,

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uniqueId: uniqueId,

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Evented: Evented,

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getScrollBarSize: getScrollBarSize,

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removeUtilElements: removeUtilElements

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};

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/* globals TetherBase, performance */

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'use strict';

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var _slicedToArray = (function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i['return']) _i['return'](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError('Invalid attempt to destructure non-iterable instance'); } }; })();

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var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

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var _get = function get(_x6, _x7, _x8) { var _again = true; _function: while (_again) { var object = _x6, property = _x7, receiver = _x8; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x6 = parent; _x7 = property; _x8 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

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function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

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if (typeof TetherBase === 'undefined') {

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throw new Error('You must include the utils.js file before tether.js');

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}

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var _TetherBase$Utils = TetherBase.Utils;

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var getScrollParents = _TetherBase$Utils.getScrollParents;

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var getBounds = _TetherBase$Utils.getBounds;

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var getOffsetParent = _TetherBase$Utils.getOffsetParent;

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var extend = _TetherBase$Utils.extend;

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var addClass = _TetherBase$Utils.addClass;

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var removeClass = _TetherBase$Utils.removeClass;

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var updateClasses = _TetherBase$Utils.updateClasses;

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var defer = _TetherBase$Utils.defer;

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var flush = _TetherBase$Utils.flush;

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var getScrollBarSize = _TetherBase$Utils.getScrollBarSize;

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var removeUtilElements = _TetherBase$Utils.removeUtilElements;

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function within(a, b) {

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var diff = arguments.length <= 2 || arguments[2] === undefined ? 1 : arguments[2];

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[453] Fix | Delete

return a + diff >= b && b >= a - diff;

[454] Fix | Delete

}

[455] Fix | Delete

[456] Fix | Delete

var transformKey = (function () {

[457] Fix | Delete

if (typeof document === 'undefined') {

[458] Fix | Delete

return '';

[459] Fix | Delete

}

[460] Fix | Delete

var el = document.createElement('div');

[461] Fix | Delete

[462] Fix | Delete

var transforms = ['transform', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform'];

[463] Fix | Delete

for (var i = 0; i < transforms.length; ++i) {

[464] Fix | Delete

var key = transforms[i];

[465] Fix | Delete

if (el.style[key] !== undefined) {

[466] Fix | Delete

return key;

[467] Fix | Delete

}

[468] Fix | Delete

}

[469] Fix | Delete

})();

[470] Fix | Delete

[471] Fix | Delete

var tethers = [];

[472] Fix | Delete

[473] Fix | Delete

var position = function position() {

[474] Fix | Delete

tethers.forEach(function (tether) {

[475] Fix | Delete

tether.position(false);

[476] Fix | Delete

});

[477] Fix | Delete

flush();

[478] Fix | Delete

};

[479] Fix | Delete

[480] Fix | Delete

function now() {

[481] Fix | Delete

if (typeof performance === 'object' && typeof performance.now === 'function') {

[482] Fix | Delete

return performance.now();

[483] Fix | Delete

}

[484] Fix | Delete

return +new Date();

[485] Fix | Delete

}

[486] Fix | Delete

[487] Fix | Delete

(function () {

[488] Fix | Delete

var lastCall = null;

[489] Fix | Delete

var lastDuration = null;

[490] Fix | Delete

var pendingTimeout = null;

[491] Fix | Delete

[492] Fix | Delete

var tick = function tick() {

[493] Fix | Delete

if (typeof lastDuration !== 'undefined' && lastDuration > 16) {

[494] Fix | Delete

// We voluntarily throttle ourselves if we can't manage 60fps

[495] Fix | Delete

lastDuration = Math.min(lastDuration - 16, 250);

[496] Fix | Delete

[497] Fix | Delete

// Just in case this is the last event, remember to position just once more

[498] Fix | Delete

pendingTimeout = setTimeout(tick, 250);

[499] Fix | Delete