nunta/vendor/tether/tether.js
David Miller 7db1bc641a big code cleanup
rename lib to vendor, remove deprecated LESS version, revise
package.json, load jQuery easing through npm, restructure SCSS
directory into modules, expanded code commenting and documentation
theme-wide
2017-03-31 17:05:07 -04:00

1812 lines
55 KiB
JavaScript

/*! tether 1.4.0 */
(function(root, factory) {
if (typeof define === 'function' && define.amd) {
define(factory);
} else if (typeof exports === 'object') {
module.exports = factory(require, exports, module);
} else {
root.Tether = factory();
}
}(this, function(require, exports, module) {
'use strict';
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; }; })();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
var TetherBase = undefined;
if (typeof TetherBase === 'undefined') {
TetherBase = { modules: [] };
}
var zeroElement = null;
// Same as native getBoundingClientRect, except it takes into account parent <frame> offsets
// if the element lies within a nested document (<frame> or <iframe>-like).
function getActualBoundingClientRect(node) {
var boundingRect = node.getBoundingClientRect();
// The original object returned by getBoundingClientRect is immutable, so we clone it
// We can't use extend because the properties are not considered part of the object by hasOwnProperty in IE9
var rect = {};
for (var k in boundingRect) {
rect[k] = boundingRect[k];
}
if (node.ownerDocument !== document) {
var _frameElement = node.ownerDocument.defaultView.frameElement;
if (_frameElement) {
var frameRect = getActualBoundingClientRect(_frameElement);
rect.top += frameRect.top;
rect.bottom += frameRect.top;
rect.left += frameRect.left;
rect.right += frameRect.left;
}
}
return rect;
}
function getScrollParents(el) {
// In firefox if the el is inside an iframe with display: none; window.getComputedStyle() will return null;
// https://bugzilla.mozilla.org/show_bug.cgi?id=548397
var computedStyle = getComputedStyle(el) || {};
var position = computedStyle.position;
var parents = [];
if (position === 'fixed') {
return [el];
}
var parent = el;
while ((parent = parent.parentNode) && parent && parent.nodeType === 1) {
var style = undefined;
try {
style = getComputedStyle(parent);
} catch (err) {}
if (typeof style === 'undefined' || style === null) {
parents.push(parent);
return parents;
}
var _style = style;
var overflow = _style.overflow;
var overflowX = _style.overflowX;
var overflowY = _style.overflowY;
if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {
if (position !== 'absolute' || ['relative', 'absolute', 'fixed'].indexOf(style.position) >= 0) {
parents.push(parent);
}
}
}
parents.push(el.ownerDocument.body);
// If the node is within a frame, account for the parent window scroll
if (el.ownerDocument !== document) {
parents.push(el.ownerDocument.defaultView);
}
return parents;
}
var uniqueId = (function () {
var id = 0;
return function () {
return ++id;
};
})();
var zeroPosCache = {};
var getOrigin = function getOrigin() {
// getBoundingClientRect is unfortunately too accurate. It introduces a pixel or two of
// jitter as the user scrolls that messes with our ability to detect if two positions
// are equivilant or not. We place an element at the top left of the page that will
// get the same jitter, so we can cancel the two out.
var node = zeroElement;
if (!node || !document.body.contains(node)) {
node = document.createElement('div');
node.setAttribute('data-tether-id', uniqueId());
extend(node.style, {
top: 0,
left: 0,
position: 'absolute'
});
document.body.appendChild(node);
zeroElement = node;
}
var id = node.getAttribute('data-tether-id');
if (typeof zeroPosCache[id] === 'undefined') {
zeroPosCache[id] = getActualBoundingClientRect(node);
// Clear the cache when this position call is done
defer(function () {
delete zeroPosCache[id];
});
}
return zeroPosCache[id];
};
function removeUtilElements() {
if (zeroElement) {
document.body.removeChild(zeroElement);
}
zeroElement = null;
};
function getBounds(el) {
var doc = undefined;
if (el === document) {
doc = document;
el = document.documentElement;
} else {
doc = el.ownerDocument;
}
var docEl = doc.documentElement;
var box = getActualBoundingClientRect(el);
var origin = getOrigin();
box.top -= origin.top;
box.left -= origin.left;
if (typeof box.width === 'undefined') {
box.width = document.body.scrollWidth - box.left - box.right;
}
if (typeof box.height === 'undefined') {
box.height = document.body.scrollHeight - box.top - box.bottom;
}
box.top = box.top - docEl.clientTop;
box.left = box.left - docEl.clientLeft;
box.right = doc.body.clientWidth - box.width - box.left;
box.bottom = doc.body.clientHeight - box.height - box.top;
return box;
}
function getOffsetParent(el) {
return el.offsetParent || document.documentElement;
}
var _scrollBarSize = null;
function getScrollBarSize() {
if (_scrollBarSize) {
return _scrollBarSize;
}
var inner = document.createElement('div');
inner.style.width = '100%';
inner.style.height = '200px';
var outer = document.createElement('div');
extend(outer.style, {
position: 'absolute',
top: 0,
left: 0,
pointerEvents: 'none',
visibility: 'hidden',
width: '200px',
height: '150px',
overflow: 'hidden'
});
outer.appendChild(inner);
document.body.appendChild(outer);
var widthContained = inner.offsetWidth;
outer.style.overflow = 'scroll';
var widthScroll = inner.offsetWidth;
if (widthContained === widthScroll) {
widthScroll = outer.clientWidth;
}
document.body.removeChild(outer);
var width = widthContained - widthScroll;
_scrollBarSize = { width: width, height: width };
return _scrollBarSize;
}
function extend() {
var out = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];
var args = [];
Array.prototype.push.apply(args, arguments);
args.slice(1).forEach(function (obj) {
if (obj) {
for (var key in obj) {
if (({}).hasOwnProperty.call(obj, key)) {
out[key] = obj[key];
}
}
}
});
return out;
}
function removeClass(el, name) {
if (typeof el.classList !== 'undefined') {
name.split(' ').forEach(function (cls) {
if (cls.trim()) {
el.classList.remove(cls);
}
});
} else {
var regex = new RegExp('(^| )' + name.split(' ').join('|') + '( |$)', 'gi');
var className = getClassName(el).replace(regex, ' ');
setClassName(el, className);
}
}
function addClass(el, name) {
if (typeof el.classList !== 'undefined') {
name.split(' ').forEach(function (cls) {
if (cls.trim()) {
el.classList.add(cls);
}
});
} else {
removeClass(el, name);
var cls = getClassName(el) + (' ' + name);
setClassName(el, cls);
}
}
function hasClass(el, name) {
if (typeof el.classList !== 'undefined') {
return el.classList.contains(name);
}
var className = getClassName(el);
return new RegExp('(^| )' + name + '( |$)', 'gi').test(className);
}
function getClassName(el) {
// Can't use just SVGAnimatedString here since nodes within a Frame in IE have
// completely separately SVGAnimatedString base classes
if (el.className instanceof el.ownerDocument.defaultView.SVGAnimatedString) {
return el.className.baseVal;
}
return el.className;
}
function setClassName(el, className) {
el.setAttribute('class', className);
}
function updateClasses(el, add, all) {
// Of the set of 'all' classes, we need the 'add' classes, and only the
// 'add' classes to be set.
all.forEach(function (cls) {
if (add.indexOf(cls) === -1 && hasClass(el, cls)) {
removeClass(el, cls);
}
});
add.forEach(function (cls) {
if (!hasClass(el, cls)) {
addClass(el, cls);
}
});
}
var deferred = [];
var defer = function defer(fn) {
deferred.push(fn);
};
var flush = function flush() {
var fn = undefined;
while (fn = deferred.pop()) {
fn();
}
};
var Evented = (function () {
function Evented() {
_classCallCheck(this, Evented);
}
_createClass(Evented, [{
key: 'on',
value: function on(event, handler, ctx) {
var once = arguments.length <= 3 || arguments[3] === undefined ? false : arguments[3];
if (typeof this.bindings === 'undefined') {
this.bindings = {};
}
if (typeof this.bindings[event] === 'undefined') {
this.bindings[event] = [];
}
this.bindings[event].push({ handler: handler, ctx: ctx, once: once });
}
}, {
key: 'once',
value: function once(event, handler, ctx) {
this.on(event, handler, ctx, true);
}
}, {
key: 'off',
value: function off(event, handler) {
if (typeof this.bindings === 'undefined' || typeof this.bindings[event] === 'undefined') {
return;
}
if (typeof handler === 'undefined') {
delete this.bindings[event];
} else {
var i = 0;
while (i < this.bindings[event].length) {
if (this.bindings[event][i].handler === handler) {
this.bindings[event].splice(i, 1);
} else {
++i;
}
}
}
}
}, {
key: 'trigger',
value: function trigger(event) {
if (typeof this.bindings !== 'undefined' && this.bindings[event]) {
var i = 0;
for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
args[_key - 1] = arguments[_key];
}
while (i < this.bindings[event].length) {
var _bindings$event$i = this.bindings[event][i];
var handler = _bindings$event$i.handler;
var ctx = _bindings$event$i.ctx;
var once = _bindings$event$i.once;
var context = ctx;
if (typeof context === 'undefined') {
context = this;
}
handler.apply(context, args);
if (once) {
this.bindings[event].splice(i, 1);
} else {
++i;
}
}
}
}
}]);
return Evented;
})();
TetherBase.Utils = {
getActualBoundingClientRect: getActualBoundingClientRect,
getScrollParents: getScrollParents,
getBounds: getBounds,
getOffsetParent: getOffsetParent,
extend: extend,
addClass: addClass,
removeClass: removeClass,
hasClass: hasClass,
updateClasses: updateClasses,
defer: defer,
flush: flush,
uniqueId: uniqueId,
Evented: Evented,
getScrollBarSize: getScrollBarSize,
removeUtilElements: removeUtilElements
};
/* globals TetherBase, performance */
'use strict';
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'); } }; })();
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; }; })();
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); } } };
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
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; }
if (typeof TetherBase === 'undefined') {
throw new Error('You must include the utils.js file before tether.js');
}
var _TetherBase$Utils = TetherBase.Utils;
var getScrollParents = _TetherBase$Utils.getScrollParents;
var getBounds = _TetherBase$Utils.getBounds;
var getOffsetParent = _TetherBase$Utils.getOffsetParent;
var extend = _TetherBase$Utils.extend;
var addClass = _TetherBase$Utils.addClass;
var removeClass = _TetherBase$Utils.removeClass;
var updateClasses = _TetherBase$Utils.updateClasses;
var defer = _TetherBase$Utils.defer;
var flush = _TetherBase$Utils.flush;
var getScrollBarSize = _TetherBase$Utils.getScrollBarSize;
var removeUtilElements = _TetherBase$Utils.removeUtilElements;
function within(a, b) {
var diff = arguments.length <= 2 || arguments[2] === undefined ? 1 : arguments[2];
return a + diff >= b && b >= a - diff;
}
var transformKey = (function () {
if (typeof document === 'undefined') {
return '';
}
var el = document.createElement('div');
var transforms = ['transform', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform'];
for (var i = 0; i < transforms.length; ++i) {
var key = transforms[i];
if (el.style[key] !== undefined) {
return key;
}
}
})();
var tethers = [];
var position = function position() {
tethers.forEach(function (tether) {
tether.position(false);
});
flush();
};
function now() {
if (typeof performance !== 'undefined' && typeof performance.now !== 'undefined') {
return performance.now();
}
return +new Date();
}
(function () {
var lastCall = null;
var lastDuration = null;
var pendingTimeout = null;
var tick = function tick() {
if (typeof lastDuration !== 'undefined' && lastDuration > 16) {
// We voluntarily throttle ourselves if we can't manage 60fps
lastDuration = Math.min(lastDuration - 16, 250);
// Just in case this is the last event, remember to position just once more
pendingTimeout = setTimeout(tick, 250);
return;
}
if (typeof lastCall !== 'undefined' && now() - lastCall < 10) {
// Some browsers call events a little too frequently, refuse to run more than is reasonable
return;
}
if (pendingTimeout != null) {
clearTimeout(pendingTimeout);
pendingTimeout = null;
}
lastCall = now();
position();
lastDuration = now() - lastCall;
};
if (typeof window !== 'undefined' && typeof window.addEventListener !== 'undefined') {
['resize', 'scroll', 'touchmove'].forEach(function (event) {
window.addEventListener(event, tick);
});
}
})();
var MIRROR_LR = {
center: 'center',
left: 'right',
right: 'left'
};
var MIRROR_TB = {
middle: 'middle',
top: 'bottom',
bottom: 'top'
};
var OFFSET_MAP = {
top: 0,
left: 0,
middle: '50%',
center: '50%',
bottom: '100%',
right: '100%'
};
var autoToFixedAttachment = function autoToFixedAttachment(attachment, relativeToAttachment) {
var left = attachment.left;
var top = attachment.top;
if (left === 'auto') {
left = MIRROR_LR[relativeToAttachment.left];
}
if (top === 'auto') {
top = MIRROR_TB[relativeToAttachment.top];
}
return { left: left, top: top };
};
var attachmentToOffset = function attachmentToOffset(attachment) {
var left = attachment.left;
var top = attachment.top;
if (typeof OFFSET_MAP[attachment.left] !== 'undefined') {
left = OFFSET_MAP[attachment.left];
}
if (typeof OFFSET_MAP[attachment.top] !== 'undefined') {
top = OFFSET_MAP[attachment.top];
}
return { left: left, top: top };
};
function addOffset() {
var out = { top: 0, left: 0 };
for (var _len = arguments.length, offsets = Array(_len), _key = 0; _key < _len; _key++) {
offsets[_key] = arguments[_key];
}
offsets.forEach(function (_ref) {
var top = _ref.top;
var left = _ref.left;
if (typeof top === 'string') {
top = parseFloat(top, 10);
}
if (typeof left === 'string') {
left = parseFloat(left, 10);
}
out.top += top;
out.left += left;
});
return out;
}
function offsetToPx(offset, size) {
if (typeof offset.left === 'string' && offset.left.indexOf('%') !== -1) {
offset.left = parseFloat(offset.left, 10) / 100 * size.width;
}
if (typeof offset.top === 'string' && offset.top.indexOf('%') !== -1) {
offset.top = parseFloat(offset.top, 10) / 100 * size.height;
}
return offset;
}
var parseOffset = function parseOffset(value) {
var _value$split = value.split(' ');
var _value$split2 = _slicedToArray(_value$split, 2);
var top = _value$split2[0];
var left = _value$split2[1];
return { top: top, left: left };
};
var parseAttachment = parseOffset;
var TetherClass = (function (_Evented) {
_inherits(TetherClass, _Evented);
function TetherClass(options) {
var _this = this;
_classCallCheck(this, TetherClass);
_get(Object.getPrototypeOf(TetherClass.prototype), 'constructor', this).call(this);
this.position = this.position.bind(this);
tethers.push(this);
this.history = [];
this.setOptions(options, false);
TetherBase.modules.forEach(function (module) {
if (typeof module.initialize !== 'undefined') {
module.initialize.call(_this);
}
});
this.position();
}
_createClass(TetherClass, [{
key: 'getClass',
value: function getClass() {
var key = arguments.length <= 0 || arguments[0] === undefined ? '' : arguments[0];
var classes = this.options.classes;
if (typeof classes !== 'undefined' && classes[key]) {
return this.options.classes[key];
} else if (this.options.classPrefix) {
return this.options.classPrefix + '-' + key;
} else {
return key;
}
}
}, {
key: 'setOptions',
value: function setOptions(options) {
var _this2 = this;
var pos = arguments.length <= 1 || arguments[1] === undefined ? true : arguments[1];
var defaults = {
offset: '0 0',
targetOffset: '0 0',
targetAttachment: 'auto auto',
classPrefix: 'tether'
};
this.options = extend(defaults, options);
var _options = this.options;
var element = _options.element;
var target = _options.target;
var targetModifier = _options.targetModifier;
this.element = element;
this.target = target;
this.targetModifier = targetModifier;
if (this.target === 'viewport') {
this.target = document.body;
this.targetModifier = 'visible';
} else if (this.target === 'scroll-handle') {
this.target = document.body;
this.targetModifier = 'scroll-handle';
}
['element', 'target'].forEach(function (key) {
if (typeof _this2[key] === 'undefined') {
throw new Error('Tether Error: Both element and target must be defined');
}
if (typeof _this2[key].jquery !== 'undefined') {
_this2[key] = _this2[key][0];
} else if (typeof _this2[key] === 'string') {
_this2[key] = document.querySelector(_this2[key]);
}
});
addClass(this.element, this.getClass('element'));
if (!(this.options.addTargetClasses === false)) {
addClass(this.target, this.getClass('target'));
}
if (!this.options.attachment) {
throw new Error('Tether Error: You must provide an attachment');
}
this.targetAttachment = parseAttachment(this.options.targetAttachment);
this.attachment = parseAttachment(this.options.attachment);
this.offset = parseOffset(this.options.offset);
this.targetOffset = parseOffset(this.options.targetOffset);
if (typeof this.scrollParents !== 'undefined') {
this.disable();
}
if (this.targetModifier === 'scroll-handle') {
this.scrollParents = [this.target];
} else {
this.scrollParents = getScrollParents(this.target);
}
if (!(this.options.enabled === false)) {
this.enable(pos);
}
}
}, {
key: 'getTargetBounds',
value: function getTargetBounds() {
if (typeof this.targetModifier !== 'undefined') {
if (this.targetModifier === 'visible') {
if (this.target === document.body) {
return { top: pageYOffset, left: pageXOffset, height: innerHeight, width: innerWidth };
} else {
var bounds = getBounds(this.target);
var out = {
height: bounds.height,
width: bounds.width,
top: bounds.top,
left: bounds.left
};
out.height = Math.min(out.height, bounds.height - (pageYOffset - bounds.top));
out.height = Math.min(out.height, bounds.height - (bounds.top + bounds.height - (pageYOffset + innerHeight)));
out.height = Math.min(innerHeight, out.height);
out.height -= 2;
out.width = Math.min(out.width, bounds.width - (pageXOffset - bounds.left));
out.width = Math.min(out.width, bounds.width - (bounds.left + bounds.width - (pageXOffset + innerWidth)));
out.width = Math.min(innerWidth, out.width);
out.width -= 2;
if (out.top < pageYOffset) {
out.top = pageYOffset;
}
if (out.left < pageXOffset) {
out.left = pageXOffset;
}
return out;
}
} else if (this.targetModifier === 'scroll-handle') {
var bounds = undefined;
var target = this.target;
if (target === document.body) {
target = document.documentElement;
bounds = {
left: pageXOffset,
top: pageYOffset,
height: innerHeight,
width: innerWidth
};
} else {
bounds = getBounds(target);
}
var style = getComputedStyle(target);
var hasBottomScroll = target.scrollWidth > target.clientWidth || [style.overflow, style.overflowX].indexOf('scroll') >= 0 || this.target !== document.body;
var scrollBottom = 0;
if (hasBottomScroll) {
scrollBottom = 15;
}
var height = bounds.height - parseFloat(style.borderTopWidth) - parseFloat(style.borderBottomWidth) - scrollBottom;
var out = {
width: 15,
height: height * 0.975 * (height / target.scrollHeight),
left: bounds.left + bounds.width - parseFloat(style.borderLeftWidth) - 15
};
var fitAdj = 0;
if (height < 408 && this.target === document.body) {
fitAdj = -0.00011 * Math.pow(height, 2) - 0.00727 * height + 22.58;
}
if (this.target !== document.body) {
out.height = Math.max(out.height, 24);
}
var scrollPercentage = this.target.scrollTop / (target.scrollHeight - height);
out.top = scrollPercentage * (height - out.height - fitAdj) + bounds.top + parseFloat(style.borderTopWidth);
if (this.target === document.body) {
out.height = Math.max(out.height, 24);
}
return out;
}
} else {
return getBounds(this.target);
}
}
}, {
key: 'clearCache',
value: function clearCache() {
this._cache = {};
}
}, {
key: 'cache',
value: function cache(k, getter) {
// More than one module will often need the same DOM info, so
// we keep a cache which is cleared on each position call
if (typeof this._cache === 'undefined') {
this._cache = {};
}
if (typeof this._cache[k] === 'undefined') {
this._cache[k] = getter.call(this);
}
return this._cache[k];
}
}, {
key: 'enable',
value: function enable() {
var _this3 = this;
var pos = arguments.length <= 0 || arguments[0] === undefined ? true : arguments[0];
if (!(this.options.addTargetClasses === false)) {
addClass(this.target, this.getClass('enabled'));
}
addClass(this.element, this.getClass('enabled'));
this.enabled = true;
this.scrollParents.forEach(function (parent) {
if (parent !== _this3.target.ownerDocument) {
parent.addEventListener('scroll', _this3.position);
}
});
if (pos) {
this.position();
}
}
}, {
key: 'disable',
value: function disable() {
var _this4 = this;
removeClass(this.target, this.getClass('enabled'));
removeClass(this.element, this.getClass('enabled'));
this.enabled = false;
if (typeof this.scrollParents !== 'undefined') {
this.scrollParents.forEach(function (parent) {
parent.removeEventListener('scroll', _this4.position);
});
}
}
}, {
key: 'destroy',
value: function destroy() {
var _this5 = this;
this.disable();
tethers.forEach(function (tether, i) {
if (tether === _this5) {
tethers.splice(i, 1);
}
});
// Remove any elements we were using for convenience from the DOM
if (tethers.length === 0) {
removeUtilElements();
}
}
}, {
key: 'updateAttachClasses',
value: function updateAttachClasses(elementAttach, targetAttach) {
var _this6 = this;
elementAttach = elementAttach || this.attachment;
targetAttach = targetAttach || this.targetAttachment;
var sides = ['left', 'top', 'bottom', 'right', 'middle', 'center'];
if (typeof this._addAttachClasses !== 'undefined' && this._addAttachClasses.length) {
// updateAttachClasses can be called more than once in a position call, so
// we need to clean up after ourselves such that when the last defer gets
// ran it doesn't add any extra classes from previous calls.
this._addAttachClasses.splice(0, this._addAttachClasses.length);
}
if (typeof this._addAttachClasses === 'undefined') {
this._addAttachClasses = [];
}
var add = this._addAttachClasses;
if (elementAttach.top) {
add.push(this.getClass('element-attached') + '-' + elementAttach.top);
}
if (elementAttach.left) {
add.push(this.getClass('element-attached') + '-' + elementAttach.left);
}
if (targetAttach.top) {
add.push(this.getClass('target-attached') + '-' + targetAttach.top);
}
if (targetAttach.left) {
add.push(this.getClass('target-attached') + '-' + targetAttach.left);
}
var all = [];
sides.forEach(function (side) {
all.push(_this6.getClass('element-attached') + '-' + side);
all.push(_this6.getClass('target-attached') + '-' + side);
});
defer(function () {
if (!(typeof _this6._addAttachClasses !== 'undefined')) {
return;
}
updateClasses(_this6.element, _this6._addAttachClasses, all);
if (!(_this6.options.addTargetClasses === false)) {
updateClasses(_this6.target, _this6._addAttachClasses, all);
}
delete _this6._addAttachClasses;
});
}
}, {
key: 'position',
value: function position() {
var _this7 = this;
var flushChanges = arguments.length <= 0 || arguments[0] === undefined ? true : arguments[0];
// flushChanges commits the changes immediately, leave true unless you are positioning multiple
// tethers (in which case call Tether.Utils.flush yourself when you're done)
if (!this.enabled) {
return;
}
this.clearCache();
// Turn 'auto' attachments into the appropriate corner or edge
var targetAttachment = autoToFixedAttachment(this.targetAttachment, this.attachment);
this.updateAttachClasses(this.attachment, targetAttachment);
var elementPos = this.cache('element-bounds', function () {
return getBounds(_this7.element);
});
var width = elementPos.width;
var height = elementPos.height;
if (width === 0 && height === 0 && typeof this.lastSize !== 'undefined') {
var _lastSize = this.lastSize;
// We cache the height and width to make it possible to position elements that are
// getting hidden.
width = _lastSize.width;
height = _lastSize.height;
} else {
this.lastSize = { width: width, height: height };
}
var targetPos = this.cache('target-bounds', function () {
return _this7.getTargetBounds();
});
var targetSize = targetPos;
// Get an actual px offset from the attachment
var offset = offsetToPx(attachmentToOffset(this.attachment), { width: width, height: height });
var targetOffset = offsetToPx(attachmentToOffset(targetAttachment), targetSize);
var manualOffset = offsetToPx(this.offset, { width: width, height: height });
var manualTargetOffset = offsetToPx(this.targetOffset, targetSize);
// Add the manually provided offset
offset = addOffset(offset, manualOffset);
targetOffset = addOffset(targetOffset, manualTargetOffset);
// It's now our goal to make (element position + offset) == (target position + target offset)
var left = targetPos.left + targetOffset.left - offset.left;
var top = targetPos.top + targetOffset.top - offset.top;
for (var i = 0; i < TetherBase.modules.length; ++i) {
var _module2 = TetherBase.modules[i];
var ret = _module2.position.call(this, {
left: left,
top: top,
targetAttachment: targetAttachment,
targetPos: targetPos,
elementPos: elementPos,
offset: offset,
targetOffset: targetOffset,
manualOffset: manualOffset,
manualTargetOffset: manualTargetOffset,
scrollbarSize: scrollbarSize,
attachment: this.attachment
});
if (ret === false) {
return false;
} else if (typeof ret === 'undefined' || typeof ret !== 'object') {
continue;
} else {
top = ret.top;
left = ret.left;
}
}
// We describe the position three different ways to give the optimizer
// a chance to decide the best possible way to position the element
// with the fewest repaints.
var next = {
// It's position relative to the page (absolute positioning when
// the element is a child of the body)
page: {
top: top,
left: left
},
// It's position relative to the viewport (fixed positioning)
viewport: {
top: top - pageYOffset,
bottom: pageYOffset - top - height + innerHeight,
left: left - pageXOffset,
right: pageXOffset - left - width + innerWidth
}
};
var doc = this.target.ownerDocument;
var win = doc.defaultView;
var scrollbarSize = undefined;
if (win.innerHeight > doc.documentElement.clientHeight) {
scrollbarSize = this.cache('scrollbar-size', getScrollBarSize);
next.viewport.bottom -= scrollbarSize.height;
}
if (win.innerWidth > doc.documentElement.clientWidth) {
scrollbarSize = this.cache('scrollbar-size', getScrollBarSize);
next.viewport.right -= scrollbarSize.width;
}
if (['', 'static'].indexOf(doc.body.style.position) === -1 || ['', 'static'].indexOf(doc.body.parentElement.style.position) === -1) {
// Absolute positioning in the body will be relative to the page, not the 'initial containing block'
next.page.bottom = doc.body.scrollHeight - top - height;
next.page.right = doc.body.scrollWidth - left - width;
}
if (typeof this.options.optimizations !== 'undefined' && this.options.optimizations.moveElement !== false && !(typeof this.targetModifier !== 'undefined')) {
(function () {
var offsetParent = _this7.cache('target-offsetparent', function () {
return getOffsetParent(_this7.target);
});
var offsetPosition = _this7.cache('target-offsetparent-bounds', function () {
return getBounds(offsetParent);
});
var offsetParentStyle = getComputedStyle(offsetParent);
var offsetParentSize = offsetPosition;
var offsetBorder = {};
['Top', 'Left', 'Bottom', 'Right'].forEach(function (side) {
offsetBorder[side.toLowerCase()] = parseFloat(offsetParentStyle['border' + side + 'Width']);
});
offsetPosition.right = doc.body.scrollWidth - offsetPosition.left - offsetParentSize.width + offsetBorder.right;
offsetPosition.bottom = doc.body.scrollHeight - offsetPosition.top - offsetParentSize.height + offsetBorder.bottom;
if (next.page.top >= offsetPosition.top + offsetBorder.top && next.page.bottom >= offsetPosition.bottom) {
if (next.page.left >= offsetPosition.left + offsetBorder.left && next.page.right >= offsetPosition.right) {
// We're within the visible part of the target's scroll parent
var scrollTop = offsetParent.scrollTop;
var scrollLeft = offsetParent.scrollLeft;
// It's position relative to the target's offset parent (absolute positioning when
// the element is moved to be a child of the target's offset parent).
next.offset = {
top: next.page.top - offsetPosition.top + scrollTop - offsetBorder.top,
left: next.page.left - offsetPosition.left + scrollLeft - offsetBorder.left
};
}
}
})();
}
// We could also travel up the DOM and try each containing context, rather than only
// looking at the body, but we're gonna get diminishing returns.
this.move(next);
this.history.unshift(next);
if (this.history.length > 3) {
this.history.pop();
}
if (flushChanges) {
flush();
}
return true;
}
// THE ISSUE
}, {
key: 'move',
value: function move(pos) {
var _this8 = this;
if (!(typeof this.element.parentNode !== 'undefined')) {
return;
}
var same = {};
for (var type in pos) {
same[type] = {};
for (var key in pos[type]) {
var found = false;
for (var i = 0; i < this.history.length; ++i) {
var point = this.history[i];
if (typeof point[type] !== 'undefined' && !within(point[type][key], pos[type][key])) {
found = true;
break;
}
}
if (!found) {
same[type][key] = true;
}
}
}
var css = { top: '', left: '', right: '', bottom: '' };
var transcribe = function transcribe(_same, _pos) {
var hasOptimizations = typeof _this8.options.optimizations !== 'undefined';
var gpu = hasOptimizations ? _this8.options.optimizations.gpu : null;
if (gpu !== false) {
var yPos = undefined,
xPos = undefined;
if (_same.top) {
css.top = 0;
yPos = _pos.top;
} else {
css.bottom = 0;
yPos = -_pos.bottom;
}
if (_same.left) {
css.left = 0;
xPos = _pos.left;
} else {
css.right = 0;
xPos = -_pos.right;
}
if (window.matchMedia) {
// HubSpot/tether#207
var retina = window.matchMedia('only screen and (min-resolution: 1.3dppx)').matches || window.matchMedia('only screen and (-webkit-min-device-pixel-ratio: 1.3)').matches;
if (!retina) {
xPos = Math.round(xPos);
yPos = Math.round(yPos);
}
}
css[transformKey] = 'translateX(' + xPos + 'px) translateY(' + yPos + 'px)';
if (transformKey !== 'msTransform') {
// The Z transform will keep this in the GPU (faster, and prevents artifacts),
// but IE9 doesn't support 3d transforms and will choke.
css[transformKey] += " translateZ(0)";
}
} else {
if (_same.top) {
css.top = _pos.top + 'px';
} else {
css.bottom = _pos.bottom + 'px';
}
if (_same.left) {
css.left = _pos.left + 'px';
} else {
css.right = _pos.right + 'px';
}
}
};
var moved = false;
if ((same.page.top || same.page.bottom) && (same.page.left || same.page.right)) {
css.position = 'absolute';
transcribe(same.page, pos.page);
} else if ((same.viewport.top || same.viewport.bottom) && (same.viewport.left || same.viewport.right)) {
css.position = 'fixed';
transcribe(same.viewport, pos.viewport);
} else if (typeof same.offset !== 'undefined' && same.offset.top && same.offset.left) {
(function () {
css.position = 'absolute';
var offsetParent = _this8.cache('target-offsetparent', function () {
return getOffsetParent(_this8.target);
});
if (getOffsetParent(_this8.element) !== offsetParent) {
defer(function () {
_this8.element.parentNode.removeChild(_this8.element);
offsetParent.appendChild(_this8.element);
});
}
transcribe(same.offset, pos.offset);
moved = true;
})();
} else {
css.position = 'absolute';
transcribe({ top: true, left: true }, pos.page);
}
if (!moved) {
if (this.options.bodyElement) {
this.options.bodyElement.appendChild(this.element);
} else {
var offsetParentIsBody = true;
var currentNode = this.element.parentNode;
while (currentNode && currentNode.nodeType === 1 && currentNode.tagName !== 'BODY') {
if (getComputedStyle(currentNode).position !== 'static') {
offsetParentIsBody = false;
break;
}
currentNode = currentNode.parentNode;
}
if (!offsetParentIsBody) {
this.element.parentNode.removeChild(this.element);
this.element.ownerDocument.body.appendChild(this.element);
}
}
}
// Any css change will trigger a repaint, so let's avoid one if nothing changed
var writeCSS = {};
var write = false;
for (var key in css) {
var val = css[key];
var elVal = this.element.style[key];
if (elVal !== val) {
write = true;
writeCSS[key] = val;
}
}
if (write) {
defer(function () {
extend(_this8.element.style, writeCSS);
_this8.trigger('repositioned');
});
}
}
}]);
return TetherClass;
})(Evented);
TetherClass.modules = [];
TetherBase.position = position;
var Tether = extend(TetherClass, TetherBase);
/* globals TetherBase */
'use strict';
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'); } }; })();
var _TetherBase$Utils = TetherBase.Utils;
var getBounds = _TetherBase$Utils.getBounds;
var extend = _TetherBase$Utils.extend;
var updateClasses = _TetherBase$Utils.updateClasses;
var defer = _TetherBase$Utils.defer;
var BOUNDS_FORMAT = ['left', 'top', 'right', 'bottom'];
function getBoundingRect(tether, to) {
if (to === 'scrollParent') {
to = tether.scrollParents[0];
} else if (to === 'window') {
to = [pageXOffset, pageYOffset, innerWidth + pageXOffset, innerHeight + pageYOffset];
}
if (to === document) {
to = to.documentElement;
}
if (typeof to.nodeType !== 'undefined') {
(function () {
var node = to;
var size = getBounds(to);
var pos = size;
var style = getComputedStyle(to);
to = [pos.left, pos.top, size.width + pos.left, size.height + pos.top];
// Account any parent Frames scroll offset
if (node.ownerDocument !== document) {
var win = node.ownerDocument.defaultView;
to[0] += win.pageXOffset;
to[1] += win.pageYOffset;
to[2] += win.pageXOffset;
to[3] += win.pageYOffset;
}
BOUNDS_FORMAT.forEach(function (side, i) {
side = side[0].toUpperCase() + side.substr(1);
if (side === 'Top' || side === 'Left') {
to[i] += parseFloat(style['border' + side + 'Width']);
} else {
to[i] -= parseFloat(style['border' + side + 'Width']);
}
});
})();
}
return to;
}
TetherBase.modules.push({
position: function position(_ref) {
var _this = this;
var top = _ref.top;
var left = _ref.left;
var targetAttachment = _ref.targetAttachment;
if (!this.options.constraints) {
return true;
}
var _cache = this.cache('element-bounds', function () {
return getBounds(_this.element);
});
var height = _cache.height;
var width = _cache.width;
if (width === 0 && height === 0 && typeof this.lastSize !== 'undefined') {
var _lastSize = this.lastSize;
// Handle the item getting hidden as a result of our positioning without glitching
// the classes in and out
width = _lastSize.width;
height = _lastSize.height;
}
var targetSize = this.cache('target-bounds', function () {
return _this.getTargetBounds();
});
var targetHeight = targetSize.height;
var targetWidth = targetSize.width;
var allClasses = [this.getClass('pinned'), this.getClass('out-of-bounds')];
this.options.constraints.forEach(function (constraint) {
var outOfBoundsClass = constraint.outOfBoundsClass;
var pinnedClass = constraint.pinnedClass;
if (outOfBoundsClass) {
allClasses.push(outOfBoundsClass);
}
if (pinnedClass) {
allClasses.push(pinnedClass);
}
});
allClasses.forEach(function (cls) {
['left', 'top', 'right', 'bottom'].forEach(function (side) {
allClasses.push(cls + '-' + side);
});
});
var addClasses = [];
var tAttachment = extend({}, targetAttachment);
var eAttachment = extend({}, this.attachment);
this.options.constraints.forEach(function (constraint) {
var to = constraint.to;
var attachment = constraint.attachment;
var pin = constraint.pin;
if (typeof attachment === 'undefined') {
attachment = '';
}
var changeAttachX = undefined,
changeAttachY = undefined;
if (attachment.indexOf(' ') >= 0) {
var _attachment$split = attachment.split(' ');
var _attachment$split2 = _slicedToArray(_attachment$split, 2);
changeAttachY = _attachment$split2[0];
changeAttachX = _attachment$split2[1];
} else {
changeAttachX = changeAttachY = attachment;
}
var bounds = getBoundingRect(_this, to);
if (changeAttachY === 'target' || changeAttachY === 'both') {
if (top < bounds[1] && tAttachment.top === 'top') {
top += targetHeight;
tAttachment.top = 'bottom';
}
if (top + height > bounds[3] && tAttachment.top === 'bottom') {
top -= targetHeight;
tAttachment.top = 'top';
}
}
if (changeAttachY === 'together') {
if (tAttachment.top === 'top') {
if (eAttachment.top === 'bottom' && top < bounds[1]) {
top += targetHeight;
tAttachment.top = 'bottom';
top += height;
eAttachment.top = 'top';
} else if (eAttachment.top === 'top' && top + height > bounds[3] && top - (height - targetHeight) >= bounds[1]) {
top -= height - targetHeight;
tAttachment.top = 'bottom';
eAttachment.top = 'bottom';
}
}
if (tAttachment.top === 'bottom') {
if (eAttachment.top === 'top' && top + height > bounds[3]) {
top -= targetHeight;
tAttachment.top = 'top';
top -= height;
eAttachment.top = 'bottom';
} else if (eAttachment.top === 'bottom' && top < bounds[1] && top + (height * 2 - targetHeight) <= bounds[3]) {
top += height - targetHeight;
tAttachment.top = 'top';
eAttachment.top = 'top';
}
}
if (tAttachment.top === 'middle') {
if (top + height > bounds[3] && eAttachment.top === 'top') {
top -= height;
eAttachment.top = 'bottom';
} else if (top < bounds[1] && eAttachment.top === 'bottom') {
top += height;
eAttachment.top = 'top';
}
}
}
if (changeAttachX === 'target' || changeAttachX === 'both') {
if (left < bounds[0] && tAttachment.left === 'left') {
left += targetWidth;
tAttachment.left = 'right';
}
if (left + width > bounds[2] && tAttachment.left === 'right') {
left -= targetWidth;
tAttachment.left = 'left';
}
}
if (changeAttachX === 'together') {
if (left < bounds[0] && tAttachment.left === 'left') {
if (eAttachment.left === 'right') {
left += targetWidth;
tAttachment.left = 'right';
left += width;
eAttachment.left = 'left';
} else if (eAttachment.left === 'left') {
left += targetWidth;
tAttachment.left = 'right';
left -= width;
eAttachment.left = 'right';
}
} else if (left + width > bounds[2] && tAttachment.left === 'right') {
if (eAttachment.left === 'left') {
left -= targetWidth;
tAttachment.left = 'left';
left -= width;
eAttachment.left = 'right';
} else if (eAttachment.left === 'right') {
left -= targetWidth;
tAttachment.left = 'left';
left += width;
eAttachment.left = 'left';
}
} else if (tAttachment.left === 'center') {
if (left + width > bounds[2] && eAttachment.left === 'left') {
left -= width;
eAttachment.left = 'right';
} else if (left < bounds[0] && eAttachment.left === 'right') {
left += width;
eAttachment.left = 'left';
}
}
}
if (changeAttachY === 'element' || changeAttachY === 'both') {
if (top < bounds[1] && eAttachment.top === 'bottom') {
top += height;
eAttachment.top = 'top';
}
if (top + height > bounds[3] && eAttachment.top === 'top') {
top -= height;
eAttachment.top = 'bottom';
}
}
if (changeAttachX === 'element' || changeAttachX === 'both') {
if (left < bounds[0]) {
if (eAttachment.left === 'right') {
left += width;
eAttachment.left = 'left';
} else if (eAttachment.left === 'center') {
left += width / 2;
eAttachment.left = 'left';
}
}
if (left + width > bounds[2]) {
if (eAttachment.left === 'left') {
left -= width;
eAttachment.left = 'right';
} else if (eAttachment.left === 'center') {
left -= width / 2;
eAttachment.left = 'right';
}
}
}
if (typeof pin === 'string') {
pin = pin.split(',').map(function (p) {
return p.trim();
});
} else if (pin === true) {
pin = ['top', 'left', 'right', 'bottom'];
}
pin = pin || [];
var pinned = [];
var oob = [];
if (top < bounds[1]) {
if (pin.indexOf('top') >= 0) {
top = bounds[1];
pinned.push('top');
} else {
oob.push('top');
}
}
if (top + height > bounds[3]) {
if (pin.indexOf('bottom') >= 0) {
top = bounds[3] - height;
pinned.push('bottom');
} else {
oob.push('bottom');
}
}
if (left < bounds[0]) {
if (pin.indexOf('left') >= 0) {
left = bounds[0];
pinned.push('left');
} else {
oob.push('left');
}
}
if (left + width > bounds[2]) {
if (pin.indexOf('right') >= 0) {
left = bounds[2] - width;
pinned.push('right');
} else {
oob.push('right');
}
}
if (pinned.length) {
(function () {
var pinnedClass = undefined;
if (typeof _this.options.pinnedClass !== 'undefined') {
pinnedClass = _this.options.pinnedClass;
} else {
pinnedClass = _this.getClass('pinned');
}
addClasses.push(pinnedClass);
pinned.forEach(function (side) {
addClasses.push(pinnedClass + '-' + side);
});
})();
}
if (oob.length) {
(function () {
var oobClass = undefined;
if (typeof _this.options.outOfBoundsClass !== 'undefined') {
oobClass = _this.options.outOfBoundsClass;
} else {
oobClass = _this.getClass('out-of-bounds');
}
addClasses.push(oobClass);
oob.forEach(function (side) {
addClasses.push(oobClass + '-' + side);
});
})();
}
if (pinned.indexOf('left') >= 0 || pinned.indexOf('right') >= 0) {
eAttachment.left = tAttachment.left = false;
}
if (pinned.indexOf('top') >= 0 || pinned.indexOf('bottom') >= 0) {
eAttachment.top = tAttachment.top = false;
}
if (tAttachment.top !== targetAttachment.top || tAttachment.left !== targetAttachment.left || eAttachment.top !== _this.attachment.top || eAttachment.left !== _this.attachment.left) {
_this.updateAttachClasses(eAttachment, tAttachment);
_this.trigger('update', {
attachment: eAttachment,
targetAttachment: tAttachment
});
}
});
defer(function () {
if (!(_this.options.addTargetClasses === false)) {
updateClasses(_this.target, addClasses, allClasses);
}
updateClasses(_this.element, addClasses, allClasses);
});
return { top: top, left: left };
}
});
/* globals TetherBase */
'use strict';
var _TetherBase$Utils = TetherBase.Utils;
var getBounds = _TetherBase$Utils.getBounds;
var updateClasses = _TetherBase$Utils.updateClasses;
var defer = _TetherBase$Utils.defer;
TetherBase.modules.push({
position: function position(_ref) {
var _this = this;
var top = _ref.top;
var left = _ref.left;
var _cache = this.cache('element-bounds', function () {
return getBounds(_this.element);
});
var height = _cache.height;
var width = _cache.width;
var targetPos = this.getTargetBounds();
var bottom = top + height;
var right = left + width;
var abutted = [];
if (top <= targetPos.bottom && bottom >= targetPos.top) {
['left', 'right'].forEach(function (side) {
var targetPosSide = targetPos[side];
if (targetPosSide === left || targetPosSide === right) {
abutted.push(side);
}
});
}
if (left <= targetPos.right && right >= targetPos.left) {
['top', 'bottom'].forEach(function (side) {
var targetPosSide = targetPos[side];
if (targetPosSide === top || targetPosSide === bottom) {
abutted.push(side);
}
});
}
var allClasses = [];
var addClasses = [];
var sides = ['left', 'top', 'right', 'bottom'];
allClasses.push(this.getClass('abutted'));
sides.forEach(function (side) {
allClasses.push(_this.getClass('abutted') + '-' + side);
});
if (abutted.length) {
addClasses.push(this.getClass('abutted'));
}
abutted.forEach(function (side) {
addClasses.push(_this.getClass('abutted') + '-' + side);
});
defer(function () {
if (!(_this.options.addTargetClasses === false)) {
updateClasses(_this.target, addClasses, allClasses);
}
updateClasses(_this.element, addClasses, allClasses);
});
return true;
}
});
/* globals TetherBase */
'use strict';
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'); } }; })();
TetherBase.modules.push({
position: function position(_ref) {
var top = _ref.top;
var left = _ref.left;
if (!this.options.shift) {
return;
}
var shift = this.options.shift;
if (typeof this.options.shift === 'function') {
shift = this.options.shift.call(this, { top: top, left: left });
}
var shiftTop = undefined,
shiftLeft = undefined;
if (typeof shift === 'string') {
shift = shift.split(' ');
shift[1] = shift[1] || shift[0];
var _shift = shift;
var _shift2 = _slicedToArray(_shift, 2);
shiftTop = _shift2[0];
shiftLeft = _shift2[1];
shiftTop = parseFloat(shiftTop, 10);
shiftLeft = parseFloat(shiftLeft, 10);
} else {
shiftTop = shift.top;
shiftLeft = shift.left;
}
top += shiftTop;
left += shiftLeft;
return { top: top, left: left };
}
});
return Tether;
}));