| /**! |
| * @fileOverview Kickass library to create and place poppers near their reference elements. |
| * @version 1.16.0 |
| * @license |
| * Copyright (c) 2016 Federico Zivolo and contributors |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| (function (global, factory) { |
| typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : |
| typeof define === 'function' && define.amd ? define(factory) : |
| (global.Popper = factory()); |
| }(this, (function () { 'use strict'; |
| |
| var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined'; |
| |
| var timeoutDuration = function () { |
| var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox']; |
| for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) { |
| if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) { |
| return 1; |
| } |
| } |
| return 0; |
| }(); |
| |
| function microtaskDebounce(fn) { |
| var called = false; |
| return function () { |
| if (called) { |
| return; |
| } |
| called = true; |
| window.Promise.resolve().then(function () { |
| called = false; |
| fn(); |
| }); |
| }; |
| } |
| |
| function taskDebounce(fn) { |
| var scheduled = false; |
| return function () { |
| if (!scheduled) { |
| scheduled = true; |
| setTimeout(function () { |
| scheduled = false; |
| fn(); |
| }, timeoutDuration); |
| } |
| }; |
| } |
| |
| var supportsMicroTasks = isBrowser && window.Promise; |
| |
| /** |
| * Create a debounced version of a method, that's asynchronously deferred |
| * but called in the minimum time possible. |
| * |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Function} fn |
| * @returns {Function} |
| */ |
| var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce; |
| |
| /** |
| * Check if the given variable is a function |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Any} functionToCheck - variable to check |
| * @returns {Boolean} answer to: is a function? |
| */ |
| function isFunction(functionToCheck) { |
| var getType = {}; |
| return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]'; |
| } |
| |
| /** |
| * Get CSS computed property of the given element |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Eement} element |
| * @argument {String} property |
| */ |
| function getStyleComputedProperty(element, property) { |
| if (element.nodeType !== 1) { |
| return []; |
| } |
| // NOTE: 1 DOM access here |
| var window = element.ownerDocument.defaultView; |
| var css = window.getComputedStyle(element, null); |
| return property ? css[property] : css; |
| } |
| |
| /** |
| * Returns the parentNode or the host of the element |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} element |
| * @returns {Element} parent |
| */ |
| function getParentNode(element) { |
| if (element.nodeName === 'HTML') { |
| return element; |
| } |
| return element.parentNode || element.host; |
| } |
| |
| /** |
| * Returns the scrolling parent of the given element |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} element |
| * @returns {Element} scroll parent |
| */ |
| function getScrollParent(element) { |
| // Return body, `getScroll` will take care to get the correct `scrollTop` from it |
| if (!element) { |
| return document.body; |
| } |
| |
| switch (element.nodeName) { |
| case 'HTML': |
| case 'BODY': |
| return element.ownerDocument.body; |
| case '#document': |
| return element.body; |
| } |
| |
| // Firefox want us to check `-x` and `-y` variations as well |
| |
| var _getStyleComputedProp = getStyleComputedProperty(element), |
| overflow = _getStyleComputedProp.overflow, |
| overflowX = _getStyleComputedProp.overflowX, |
| overflowY = _getStyleComputedProp.overflowY; |
| |
| if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) { |
| return element; |
| } |
| |
| return getScrollParent(getParentNode(element)); |
| } |
| |
| /** |
| * Returns the reference node of the reference object, or the reference object itself. |
| * @method |
| * @memberof Popper.Utils |
| * @param {Element|Object} reference - the reference element (the popper will be relative to this) |
| * @returns {Element} parent |
| */ |
| function getReferenceNode(reference) { |
| return reference && reference.referenceNode ? reference.referenceNode : reference; |
| } |
| |
| var isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode); |
| var isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent); |
| |
| /** |
| * Determines if the browser is Internet Explorer |
| * @method |
| * @memberof Popper.Utils |
| * @param {Number} version to check |
| * @returns {Boolean} isIE |
| */ |
| function isIE(version) { |
| if (version === 11) { |
| return isIE11; |
| } |
| if (version === 10) { |
| return isIE10; |
| } |
| return isIE11 || isIE10; |
| } |
| |
| /** |
| * Returns the offset parent of the given element |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} element |
| * @returns {Element} offset parent |
| */ |
| function getOffsetParent(element) { |
| if (!element) { |
| return document.documentElement; |
| } |
| |
| var noOffsetParent = isIE(10) ? document.body : null; |
| |
| // NOTE: 1 DOM access here |
| var offsetParent = element.offsetParent || null; |
| // Skip hidden elements which don't have an offsetParent |
| while (offsetParent === noOffsetParent && element.nextElementSibling) { |
| offsetParent = (element = element.nextElementSibling).offsetParent; |
| } |
| |
| var nodeName = offsetParent && offsetParent.nodeName; |
| |
| if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') { |
| return element ? element.ownerDocument.documentElement : document.documentElement; |
| } |
| |
| // .offsetParent will return the closest TH, TD or TABLE in case |
| // no offsetParent is present, I hate this job... |
| if (['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') { |
| return getOffsetParent(offsetParent); |
| } |
| |
| return offsetParent; |
| } |
| |
| function isOffsetContainer(element) { |
| var nodeName = element.nodeName; |
| |
| if (nodeName === 'BODY') { |
| return false; |
| } |
| return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element; |
| } |
| |
| /** |
| * Finds the root node (document, shadowDOM root) of the given element |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} node |
| * @returns {Element} root node |
| */ |
| function getRoot(node) { |
| if (node.parentNode !== null) { |
| return getRoot(node.parentNode); |
| } |
| |
| return node; |
| } |
| |
| /** |
| * Finds the offset parent common to the two provided nodes |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} element1 |
| * @argument {Element} element2 |
| * @returns {Element} common offset parent |
| */ |
| function findCommonOffsetParent(element1, element2) { |
| // This check is needed to avoid errors in case one of the elements isn't defined for any reason |
| if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) { |
| return document.documentElement; |
| } |
| |
| // Here we make sure to give as "start" the element that comes first in the DOM |
| var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING; |
| var start = order ? element1 : element2; |
| var end = order ? element2 : element1; |
| |
| // Get common ancestor container |
| var range = document.createRange(); |
| range.setStart(start, 0); |
| range.setEnd(end, 0); |
| var commonAncestorContainer = range.commonAncestorContainer; |
| |
| // Both nodes are inside #document |
| |
| if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) { |
| if (isOffsetContainer(commonAncestorContainer)) { |
| return commonAncestorContainer; |
| } |
| |
| return getOffsetParent(commonAncestorContainer); |
| } |
| |
| // one of the nodes is inside shadowDOM, find which one |
| var element1root = getRoot(element1); |
| if (element1root.host) { |
| return findCommonOffsetParent(element1root.host, element2); |
| } else { |
| return findCommonOffsetParent(element1, getRoot(element2).host); |
| } |
| } |
| |
| /** |
| * Gets the scroll value of the given element in the given side (top and left) |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} element |
| * @argument {String} side `top` or `left` |
| * @returns {number} amount of scrolled pixels |
| */ |
| function getScroll(element) { |
| var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top'; |
| |
| var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft'; |
| var nodeName = element.nodeName; |
| |
| if (nodeName === 'BODY' || nodeName === 'HTML') { |
| var html = element.ownerDocument.documentElement; |
| var scrollingElement = element.ownerDocument.scrollingElement || html; |
| return scrollingElement[upperSide]; |
| } |
| |
| return element[upperSide]; |
| } |
| |
| /* |
| * Sum or subtract the element scroll values (left and top) from a given rect object |
| * @method |
| * @memberof Popper.Utils |
| * @param {Object} rect - Rect object you want to change |
| * @param {HTMLElement} element - The element from the function reads the scroll values |
| * @param {Boolean} subtract - set to true if you want to subtract the scroll values |
| * @return {Object} rect - The modifier rect object |
| */ |
| function includeScroll(rect, element) { |
| var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false; |
| |
| var scrollTop = getScroll(element, 'top'); |
| var scrollLeft = getScroll(element, 'left'); |
| var modifier = subtract ? -1 : 1; |
| rect.top += scrollTop * modifier; |
| rect.bottom += scrollTop * modifier; |
| rect.left += scrollLeft * modifier; |
| rect.right += scrollLeft * modifier; |
| return rect; |
| } |
| |
| /* |
| * Helper to detect borders of a given element |
| * @method |
| * @memberof Popper.Utils |
| * @param {CSSStyleDeclaration} styles |
| * Result of `getStyleComputedProperty` on the given element |
| * @param {String} axis - `x` or `y` |
| * @return {number} borders - The borders size of the given axis |
| */ |
| |
| function getBordersSize(styles, axis) { |
| var sideA = axis === 'x' ? 'Left' : 'Top'; |
| var sideB = sideA === 'Left' ? 'Right' : 'Bottom'; |
| |
| return parseFloat(styles['border' + sideA + 'Width'], 10) + parseFloat(styles['border' + sideB + 'Width'], 10); |
| } |
| |
| function getSize(axis, body, html, computedStyle) { |
| return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE(10) ? parseInt(html['offset' + axis]) + parseInt(computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')]) + parseInt(computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')]) : 0); |
| } |
| |
| function getWindowSizes(document) { |
| var body = document.body; |
| var html = document.documentElement; |
| var computedStyle = isIE(10) && getComputedStyle(html); |
| |
| return { |
| height: getSize('Height', body, html, computedStyle), |
| width: getSize('Width', body, html, computedStyle) |
| }; |
| } |
| |
| var classCallCheck = function (instance, Constructor) { |
| if (!(instance instanceof Constructor)) { |
| throw new TypeError("Cannot call a class as a function"); |
| } |
| }; |
| |
| 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 defineProperty = function (obj, key, value) { |
| if (key in obj) { |
| Object.defineProperty(obj, key, { |
| value: value, |
| enumerable: true, |
| configurable: true, |
| writable: true |
| }); |
| } else { |
| obj[key] = value; |
| } |
| |
| return obj; |
| }; |
| |
| 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; |
| }; |
| |
| /** |
| * Given element offsets, generate an output similar to getBoundingClientRect |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Object} offsets |
| * @returns {Object} ClientRect like output |
| */ |
| function getClientRect(offsets) { |
| return _extends({}, offsets, { |
| right: offsets.left + offsets.width, |
| bottom: offsets.top + offsets.height |
| }); |
| } |
| |
| /** |
| * Get bounding client rect of given element |
| * @method |
| * @memberof Popper.Utils |
| * @param {HTMLElement} element |
| * @return {Object} client rect |
| */ |
| function getBoundingClientRect(element) { |
| var rect = {}; |
| |
| // IE10 10 FIX: Please, don't ask, the element isn't |
| // considered in DOM in some circumstances... |
| // This isn't reproducible in IE10 compatibility mode of IE11 |
| try { |
| if (isIE(10)) { |
| rect = element.getBoundingClientRect(); |
| var scrollTop = getScroll(element, 'top'); |
| var scrollLeft = getScroll(element, 'left'); |
| rect.top += scrollTop; |
| rect.left += scrollLeft; |
| rect.bottom += scrollTop; |
| rect.right += scrollLeft; |
| } else { |
| rect = element.getBoundingClientRect(); |
| } |
| } catch (e) {} |
| |
| var result = { |
| left: rect.left, |
| top: rect.top, |
| width: rect.right - rect.left, |
| height: rect.bottom - rect.top |
| }; |
| |
| // subtract scrollbar size from sizes |
| var sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {}; |
| var width = sizes.width || element.clientWidth || result.width; |
| var height = sizes.height || element.clientHeight || result.height; |
| |
| var horizScrollbar = element.offsetWidth - width; |
| var vertScrollbar = element.offsetHeight - height; |
| |
| // if an hypothetical scrollbar is detected, we must be sure it's not a `border` |
| // we make this check conditional for performance reasons |
| if (horizScrollbar || vertScrollbar) { |
| var styles = getStyleComputedProperty(element); |
| horizScrollbar -= getBordersSize(styles, 'x'); |
| vertScrollbar -= getBordersSize(styles, 'y'); |
| |
| result.width -= horizScrollbar; |
| result.height -= vertScrollbar; |
| } |
| |
| return getClientRect(result); |
| } |
| |
| function getOffsetRectRelativeToArbitraryNode(children, parent) { |
| var fixedPosition = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false; |
| |
| var isIE10 = isIE(10); |
| var isHTML = parent.nodeName === 'HTML'; |
| var childrenRect = getBoundingClientRect(children); |
| var parentRect = getBoundingClientRect(parent); |
| var scrollParent = getScrollParent(children); |
| |
| var styles = getStyleComputedProperty(parent); |
| var borderTopWidth = parseFloat(styles.borderTopWidth, 10); |
| var borderLeftWidth = parseFloat(styles.borderLeftWidth, 10); |
| |
| // In cases where the parent is fixed, we must ignore negative scroll in offset calc |
| if (fixedPosition && isHTML) { |
| parentRect.top = Math.max(parentRect.top, 0); |
| parentRect.left = Math.max(parentRect.left, 0); |
| } |
| var offsets = getClientRect({ |
| top: childrenRect.top - parentRect.top - borderTopWidth, |
| left: childrenRect.left - parentRect.left - borderLeftWidth, |
| width: childrenRect.width, |
| height: childrenRect.height |
| }); |
| offsets.marginTop = 0; |
| offsets.marginLeft = 0; |
| |
| // Subtract margins of documentElement in case it's being used as parent |
| // we do this only on HTML because it's the only element that behaves |
| // differently when margins are applied to it. The margins are included in |
| // the box of the documentElement, in the other cases not. |
| if (!isIE10 && isHTML) { |
| var marginTop = parseFloat(styles.marginTop, 10); |
| var marginLeft = parseFloat(styles.marginLeft, 10); |
| |
| offsets.top -= borderTopWidth - marginTop; |
| offsets.bottom -= borderTopWidth - marginTop; |
| offsets.left -= borderLeftWidth - marginLeft; |
| offsets.right -= borderLeftWidth - marginLeft; |
| |
| // Attach marginTop and marginLeft because in some circumstances we may need them |
| offsets.marginTop = marginTop; |
| offsets.marginLeft = marginLeft; |
| } |
| |
| if (isIE10 && !fixedPosition ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') { |
| offsets = includeScroll(offsets, parent); |
| } |
| |
| return offsets; |
| } |
| |
| function getViewportOffsetRectRelativeToArtbitraryNode(element) { |
| var excludeScroll = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false; |
| |
| var html = element.ownerDocument.documentElement; |
| var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html); |
| var width = Math.max(html.clientWidth, window.innerWidth || 0); |
| var height = Math.max(html.clientHeight, window.innerHeight || 0); |
| |
| var scrollTop = !excludeScroll ? getScroll(html) : 0; |
| var scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0; |
| |
| var offset = { |
| top: scrollTop - relativeOffset.top + relativeOffset.marginTop, |
| left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft, |
| width: width, |
| height: height |
| }; |
| |
| return getClientRect(offset); |
| } |
| |
| /** |
| * Check if the given element is fixed or is inside a fixed parent |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} element |
| * @argument {Element} customContainer |
| * @returns {Boolean} answer to "isFixed?" |
| */ |
| function isFixed(element) { |
| var nodeName = element.nodeName; |
| if (nodeName === 'BODY' || nodeName === 'HTML') { |
| return false; |
| } |
| if (getStyleComputedProperty(element, 'position') === 'fixed') { |
| return true; |
| } |
| var parentNode = getParentNode(element); |
| if (!parentNode) { |
| return false; |
| } |
| return isFixed(parentNode); |
| } |
| |
| /** |
| * Finds the first parent of an element that has a transformed property defined |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} element |
| * @returns {Element} first transformed parent or documentElement |
| */ |
| |
| function getFixedPositionOffsetParent(element) { |
| // This check is needed to avoid errors in case one of the elements isn't defined for any reason |
| if (!element || !element.parentElement || isIE()) { |
| return document.documentElement; |
| } |
| var el = element.parentElement; |
| while (el && getStyleComputedProperty(el, 'transform') === 'none') { |
| el = el.parentElement; |
| } |
| return el || document.documentElement; |
| } |
| |
| /** |
| * Computed the boundaries limits and return them |
| * @method |
| * @memberof Popper.Utils |
| * @param {HTMLElement} popper |
| * @param {HTMLElement} reference |
| * @param {number} padding |
| * @param {HTMLElement} boundariesElement - Element used to define the boundaries |
| * @param {Boolean} fixedPosition - Is in fixed position mode |
| * @returns {Object} Coordinates of the boundaries |
| */ |
| function getBoundaries(popper, reference, padding, boundariesElement) { |
| var fixedPosition = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false; |
| |
| // NOTE: 1 DOM access here |
| |
| var boundaries = { top: 0, left: 0 }; |
| var offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference)); |
| |
| // Handle viewport case |
| if (boundariesElement === 'viewport') { |
| boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition); |
| } else { |
| // Handle other cases based on DOM element used as boundaries |
| var boundariesNode = void 0; |
| if (boundariesElement === 'scrollParent') { |
| boundariesNode = getScrollParent(getParentNode(reference)); |
| if (boundariesNode.nodeName === 'BODY') { |
| boundariesNode = popper.ownerDocument.documentElement; |
| } |
| } else if (boundariesElement === 'window') { |
| boundariesNode = popper.ownerDocument.documentElement; |
| } else { |
| boundariesNode = boundariesElement; |
| } |
| |
| var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent, fixedPosition); |
| |
| // In case of HTML, we need a different computation |
| if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) { |
| var _getWindowSizes = getWindowSizes(popper.ownerDocument), |
| height = _getWindowSizes.height, |
| width = _getWindowSizes.width; |
| |
| boundaries.top += offsets.top - offsets.marginTop; |
| boundaries.bottom = height + offsets.top; |
| boundaries.left += offsets.left - offsets.marginLeft; |
| boundaries.right = width + offsets.left; |
| } else { |
| // for all the other DOM elements, this one is good |
| boundaries = offsets; |
| } |
| } |
| |
| // Add paddings |
| padding = padding || 0; |
| var isPaddingNumber = typeof padding === 'number'; |
| boundaries.left += isPaddingNumber ? padding : padding.left || 0; |
| boundaries.top += isPaddingNumber ? padding : padding.top || 0; |
| boundaries.right -= isPaddingNumber ? padding : padding.right || 0; |
| boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0; |
| |
| return boundaries; |
| } |
| |
| function getArea(_ref) { |
| var width = _ref.width, |
| height = _ref.height; |
| |
| return width * height; |
| } |
| |
| /** |
| * Utility used to transform the `auto` placement to the placement with more |
| * available space. |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Object} data - The data object generated by update method |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {Object} The data object, properly modified |
| */ |
| function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) { |
| var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0; |
| |
| if (placement.indexOf('auto') === -1) { |
| return placement; |
| } |
| |
| var boundaries = getBoundaries(popper, reference, padding, boundariesElement); |
| |
| var rects = { |
| top: { |
| width: boundaries.width, |
| height: refRect.top - boundaries.top |
| }, |
| right: { |
| width: boundaries.right - refRect.right, |
| height: boundaries.height |
| }, |
| bottom: { |
| width: boundaries.width, |
| height: boundaries.bottom - refRect.bottom |
| }, |
| left: { |
| width: refRect.left - boundaries.left, |
| height: boundaries.height |
| } |
| }; |
| |
| var sortedAreas = Object.keys(rects).map(function (key) { |
| return _extends({ |
| key: key |
| }, rects[key], { |
| area: getArea(rects[key]) |
| }); |
| }).sort(function (a, b) { |
| return b.area - a.area; |
| }); |
| |
| var filteredAreas = sortedAreas.filter(function (_ref2) { |
| var width = _ref2.width, |
| height = _ref2.height; |
| return width >= popper.clientWidth && height >= popper.clientHeight; |
| }); |
| |
| var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key; |
| |
| var variation = placement.split('-')[1]; |
| |
| return computedPlacement + (variation ? '-' + variation : ''); |
| } |
| |
| /** |
| * Get offsets to the reference element |
| * @method |
| * @memberof Popper.Utils |
| * @param {Object} state |
| * @param {Element} popper - the popper element |
| * @param {Element} reference - the reference element (the popper will be relative to this) |
| * @param {Element} fixedPosition - is in fixed position mode |
| * @returns {Object} An object containing the offsets which will be applied to the popper |
| */ |
| function getReferenceOffsets(state, popper, reference) { |
| var fixedPosition = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null; |
| |
| var commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference)); |
| return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition); |
| } |
| |
| /** |
| * Get the outer sizes of the given element (offset size + margins) |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} element |
| * @returns {Object} object containing width and height properties |
| */ |
| function getOuterSizes(element) { |
| var window = element.ownerDocument.defaultView; |
| var styles = window.getComputedStyle(element); |
| var x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0); |
| var y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0); |
| var result = { |
| width: element.offsetWidth + y, |
| height: element.offsetHeight + x |
| }; |
| return result; |
| } |
| |
| /** |
| * Get the opposite placement of the given one |
| * @method |
| * @memberof Popper.Utils |
| * @argument {String} placement |
| * @returns {String} flipped placement |
| */ |
| function getOppositePlacement(placement) { |
| var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' }; |
| return placement.replace(/left|right|bottom|top/g, function (matched) { |
| return hash[matched]; |
| }); |
| } |
| |
| /** |
| * Get offsets to the popper |
| * @method |
| * @memberof Popper.Utils |
| * @param {Object} position - CSS position the Popper will get applied |
| * @param {HTMLElement} popper - the popper element |
| * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this) |
| * @param {String} placement - one of the valid placement options |
| * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper |
| */ |
| function getPopperOffsets(popper, referenceOffsets, placement) { |
| placement = placement.split('-')[0]; |
| |
| // Get popper node sizes |
| var popperRect = getOuterSizes(popper); |
| |
| // Add position, width and height to our offsets object |
| var popperOffsets = { |
| width: popperRect.width, |
| height: popperRect.height |
| }; |
| |
| // depending by the popper placement we have to compute its offsets slightly differently |
| var isHoriz = ['right', 'left'].indexOf(placement) !== -1; |
| var mainSide = isHoriz ? 'top' : 'left'; |
| var secondarySide = isHoriz ? 'left' : 'top'; |
| var measurement = isHoriz ? 'height' : 'width'; |
| var secondaryMeasurement = !isHoriz ? 'height' : 'width'; |
| |
| popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2; |
| if (placement === secondarySide) { |
| popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement]; |
| } else { |
| popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)]; |
| } |
| |
| return popperOffsets; |
| } |
| |
| /** |
| * Mimics the `find` method of Array |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Array} arr |
| * @argument prop |
| * @argument value |
| * @returns index or -1 |
| */ |
| function find(arr, check) { |
| // use native find if supported |
| if (Array.prototype.find) { |
| return arr.find(check); |
| } |
| |
| // use `filter` to obtain the same behavior of `find` |
| return arr.filter(check)[0]; |
| } |
| |
| /** |
| * Return the index of the matching object |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Array} arr |
| * @argument prop |
| * @argument value |
| * @returns index or -1 |
| */ |
| function findIndex(arr, prop, value) { |
| // use native findIndex if supported |
| if (Array.prototype.findIndex) { |
| return arr.findIndex(function (cur) { |
| return cur[prop] === value; |
| }); |
| } |
| |
| // use `find` + `indexOf` if `findIndex` isn't supported |
| var match = find(arr, function (obj) { |
| return obj[prop] === value; |
| }); |
| return arr.indexOf(match); |
| } |
| |
| /** |
| * Loop trough the list of modifiers and run them in order, |
| * each of them will then edit the data object. |
| * @method |
| * @memberof Popper.Utils |
| * @param {dataObject} data |
| * @param {Array} modifiers |
| * @param {String} ends - Optional modifier name used as stopper |
| * @returns {dataObject} |
| */ |
| function runModifiers(modifiers, data, ends) { |
| var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends)); |
| |
| modifiersToRun.forEach(function (modifier) { |
| if (modifier['function']) { |
| // eslint-disable-line dot-notation |
| console.warn('`modifier.function` is deprecated, use `modifier.fn`!'); |
| } |
| var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation |
| if (modifier.enabled && isFunction(fn)) { |
| // Add properties to offsets to make them a complete clientRect object |
| // we do this before each modifier to make sure the previous one doesn't |
| // mess with these values |
| data.offsets.popper = getClientRect(data.offsets.popper); |
| data.offsets.reference = getClientRect(data.offsets.reference); |
| |
| data = fn(data, modifier); |
| } |
| }); |
| |
| return data; |
| } |
| |
| /** |
| * Updates the position of the popper, computing the new offsets and applying |
| * the new style.<br /> |
| * Prefer `scheduleUpdate` over `update` because of performance reasons. |
| * @method |
| * @memberof Popper |
| */ |
| function update() { |
| // if popper is destroyed, don't perform any further update |
| if (this.state.isDestroyed) { |
| return; |
| } |
| |
| var data = { |
| instance: this, |
| styles: {}, |
| arrowStyles: {}, |
| attributes: {}, |
| flipped: false, |
| offsets: {} |
| }; |
| |
| // compute reference element offsets |
| data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference, this.options.positionFixed); |
| |
| // compute auto placement, store placement inside the data object, |
| // modifiers will be able to edit `placement` if needed |
| // and refer to originalPlacement to know the original value |
| data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding); |
| |
| // store the computed placement inside `originalPlacement` |
| data.originalPlacement = data.placement; |
| |
| data.positionFixed = this.options.positionFixed; |
| |
| // compute the popper offsets |
| data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement); |
| |
| data.offsets.popper.position = this.options.positionFixed ? 'fixed' : 'absolute'; |
| |
| // run the modifiers |
| data = runModifiers(this.modifiers, data); |
| |
| // the first `update` will call `onCreate` callback |
| // the other ones will call `onUpdate` callback |
| if (!this.state.isCreated) { |
| this.state.isCreated = true; |
| this.options.onCreate(data); |
| } else { |
| this.options.onUpdate(data); |
| } |
| } |
| |
| /** |
| * Helper used to know if the given modifier is enabled. |
| * @method |
| * @memberof Popper.Utils |
| * @returns {Boolean} |
| */ |
| function isModifierEnabled(modifiers, modifierName) { |
| return modifiers.some(function (_ref) { |
| var name = _ref.name, |
| enabled = _ref.enabled; |
| return enabled && name === modifierName; |
| }); |
| } |
| |
| /** |
| * Get the prefixed supported property name |
| * @method |
| * @memberof Popper.Utils |
| * @argument {String} property (camelCase) |
| * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix) |
| */ |
| function getSupportedPropertyName(property) { |
| var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O']; |
| var upperProp = property.charAt(0).toUpperCase() + property.slice(1); |
| |
| for (var i = 0; i < prefixes.length; i++) { |
| var prefix = prefixes[i]; |
| var toCheck = prefix ? '' + prefix + upperProp : property; |
| if (typeof document.body.style[toCheck] !== 'undefined') { |
| return toCheck; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Destroys the popper. |
| * @method |
| * @memberof Popper |
| */ |
| function destroy() { |
| this.state.isDestroyed = true; |
| |
| // touch DOM only if `applyStyle` modifier is enabled |
| if (isModifierEnabled(this.modifiers, 'applyStyle')) { |
| this.popper.removeAttribute('x-placement'); |
| this.popper.style.position = ''; |
| this.popper.style.top = ''; |
| this.popper.style.left = ''; |
| this.popper.style.right = ''; |
| this.popper.style.bottom = ''; |
| this.popper.style.willChange = ''; |
| this.popper.style[getSupportedPropertyName('transform')] = ''; |
| } |
| |
| this.disableEventListeners(); |
| |
| // remove the popper if user explicitly asked for the deletion on destroy |
| // do not use `remove` because IE11 doesn't support it |
| if (this.options.removeOnDestroy) { |
| this.popper.parentNode.removeChild(this.popper); |
| } |
| return this; |
| } |
| |
| /** |
| * Get the window associated with the element |
| * @argument {Element} element |
| * @returns {Window} |
| */ |
| function getWindow(element) { |
| var ownerDocument = element.ownerDocument; |
| return ownerDocument ? ownerDocument.defaultView : window; |
| } |
| |
| function attachToScrollParents(scrollParent, event, callback, scrollParents) { |
| var isBody = scrollParent.nodeName === 'BODY'; |
| var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent; |
| target.addEventListener(event, callback, { passive: true }); |
| |
| if (!isBody) { |
| attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents); |
| } |
| scrollParents.push(target); |
| } |
| |
| /** |
| * Setup needed event listeners used to update the popper position |
| * @method |
| * @memberof Popper.Utils |
| * @private |
| */ |
| function setupEventListeners(reference, options, state, updateBound) { |
| // Resize event listener on window |
| state.updateBound = updateBound; |
| getWindow(reference).addEventListener('resize', state.updateBound, { passive: true }); |
| |
| // Scroll event listener on scroll parents |
| var scrollElement = getScrollParent(reference); |
| attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents); |
| state.scrollElement = scrollElement; |
| state.eventsEnabled = true; |
| |
| return state; |
| } |
| |
| /** |
| * It will add resize/scroll events and start recalculating |
| * position of the popper element when they are triggered. |
| * @method |
| * @memberof Popper |
| */ |
| function enableEventListeners() { |
| if (!this.state.eventsEnabled) { |
| this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate); |
| } |
| } |
| |
| /** |
| * Remove event listeners used to update the popper position |
| * @method |
| * @memberof Popper.Utils |
| * @private |
| */ |
| function removeEventListeners(reference, state) { |
| // Remove resize event listener on window |
| getWindow(reference).removeEventListener('resize', state.updateBound); |
| |
| // Remove scroll event listener on scroll parents |
| state.scrollParents.forEach(function (target) { |
| target.removeEventListener('scroll', state.updateBound); |
| }); |
| |
| // Reset state |
| state.updateBound = null; |
| state.scrollParents = []; |
| state.scrollElement = null; |
| state.eventsEnabled = false; |
| return state; |
| } |
| |
| /** |
| * It will remove resize/scroll events and won't recalculate popper position |
| * when they are triggered. It also won't trigger `onUpdate` callback anymore, |
| * unless you call `update` method manually. |
| * @method |
| * @memberof Popper |
| */ |
| function disableEventListeners() { |
| if (this.state.eventsEnabled) { |
| cancelAnimationFrame(this.scheduleUpdate); |
| this.state = removeEventListeners(this.reference, this.state); |
| } |
| } |
| |
| /** |
| * Tells if a given input is a number |
| * @method |
| * @memberof Popper.Utils |
| * @param {*} input to check |
| * @return {Boolean} |
| */ |
| function isNumeric(n) { |
| return n !== '' && !isNaN(parseFloat(n)) && isFinite(n); |
| } |
| |
| /** |
| * Set the style to the given popper |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} element - Element to apply the style to |
| * @argument {Object} styles |
| * Object with a list of properties and values which will be applied to the element |
| */ |
| function setStyles(element, styles) { |
| Object.keys(styles).forEach(function (prop) { |
| var unit = ''; |
| // add unit if the value is numeric and is one of the following |
| if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) { |
| unit = 'px'; |
| } |
| element.style[prop] = styles[prop] + unit; |
| }); |
| } |
| |
| /** |
| * Set the attributes to the given popper |
| * @method |
| * @memberof Popper.Utils |
| * @argument {Element} element - Element to apply the attributes to |
| * @argument {Object} styles |
| * Object with a list of properties and values which will be applied to the element |
| */ |
| function setAttributes(element, attributes) { |
| Object.keys(attributes).forEach(function (prop) { |
| var value = attributes[prop]; |
| if (value !== false) { |
| element.setAttribute(prop, attributes[prop]); |
| } else { |
| element.removeAttribute(prop); |
| } |
| }); |
| } |
| |
| /** |
| * @function |
| * @memberof Modifiers |
| * @argument {Object} data - The data object generated by `update` method |
| * @argument {Object} data.styles - List of style properties - values to apply to popper element |
| * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {Object} The same data object |
| */ |
| function applyStyle(data) { |
| // any property present in `data.styles` will be applied to the popper, |
| // in this way we can make the 3rd party modifiers add custom styles to it |
| // Be aware, modifiers could override the properties defined in the previous |
| // lines of this modifier! |
| setStyles(data.instance.popper, data.styles); |
| |
| // any property present in `data.attributes` will be applied to the popper, |
| // they will be set as HTML attributes of the element |
| setAttributes(data.instance.popper, data.attributes); |
| |
| // if arrowElement is defined and arrowStyles has some properties |
| if (data.arrowElement && Object.keys(data.arrowStyles).length) { |
| setStyles(data.arrowElement, data.arrowStyles); |
| } |
| |
| return data; |
| } |
| |
| /** |
| * Set the x-placement attribute before everything else because it could be used |
| * to add margins to the popper margins needs to be calculated to get the |
| * correct popper offsets. |
| * @method |
| * @memberof Popper.modifiers |
| * @param {HTMLElement} reference - The reference element used to position the popper |
| * @param {HTMLElement} popper - The HTML element used as popper |
| * @param {Object} options - Popper.js options |
| */ |
| function applyStyleOnLoad(reference, popper, options, modifierOptions, state) { |
| // compute reference element offsets |
| var referenceOffsets = getReferenceOffsets(state, popper, reference, options.positionFixed); |
| |
| // compute auto placement, store placement inside the data object, |
| // modifiers will be able to edit `placement` if needed |
| // and refer to originalPlacement to know the original value |
| var placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding); |
| |
| popper.setAttribute('x-placement', placement); |
| |
| // Apply `position` to popper before anything else because |
| // without the position applied we can't guarantee correct computations |
| setStyles(popper, { position: options.positionFixed ? 'fixed' : 'absolute' }); |
| |
| return options; |
| } |
| |
| /** |
| * @function |
| * @memberof Popper.Utils |
| * @argument {Object} data - The data object generated by `update` method |
| * @argument {Boolean} shouldRound - If the offsets should be rounded at all |
| * @returns {Object} The popper's position offsets rounded |
| * |
| * The tale of pixel-perfect positioning. It's still not 100% perfect, but as |
| * good as it can be within reason. |
| * Discussion here: https://github.com/FezVrasta/popper.js/pull/715 |
| * |
| * Low DPI screens cause a popper to be blurry if not using full pixels (Safari |
| * as well on High DPI screens). |
| * |
| * Firefox prefers no rounding for positioning and does not have blurriness on |
| * high DPI screens. |
| * |
| * Only horizontal placement and left/right values need to be considered. |
| */ |
| function getRoundedOffsets(data, shouldRound) { |
| var _data$offsets = data.offsets, |
| popper = _data$offsets.popper, |
| reference = _data$offsets.reference; |
| var round = Math.round, |
| floor = Math.floor; |
| |
| var noRound = function noRound(v) { |
| return v; |
| }; |
| |
| var referenceWidth = round(reference.width); |
| var popperWidth = round(popper.width); |
| |
| var isVertical = ['left', 'right'].indexOf(data.placement) !== -1; |
| var isVariation = data.placement.indexOf('-') !== -1; |
| var sameWidthParity = referenceWidth % 2 === popperWidth % 2; |
| var bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1; |
| |
| var horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthParity ? round : floor; |
| var verticalToInteger = !shouldRound ? noRound : round; |
| |
| return { |
| left: horizontalToInteger(bothOddWidth && !isVariation && shouldRound ? popper.left - 1 : popper.left), |
| top: verticalToInteger(popper.top), |
| bottom: verticalToInteger(popper.bottom), |
| right: horizontalToInteger(popper.right) |
| }; |
| } |
| |
| var isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent); |
| |
| /** |
| * @function |
| * @memberof Modifiers |
| * @argument {Object} data - The data object generated by `update` method |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {Object} The data object, properly modified |
| */ |
| function computeStyle(data, options) { |
| var x = options.x, |
| y = options.y; |
| var popper = data.offsets.popper; |
| |
| // Remove this legacy support in Popper.js v2 |
| |
| var legacyGpuAccelerationOption = find(data.instance.modifiers, function (modifier) { |
| return modifier.name === 'applyStyle'; |
| }).gpuAcceleration; |
| if (legacyGpuAccelerationOption !== undefined) { |
| console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!'); |
| } |
| var gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration; |
| |
| var offsetParent = getOffsetParent(data.instance.popper); |
| var offsetParentRect = getBoundingClientRect(offsetParent); |
| |
| // Styles |
| var styles = { |
| position: popper.position |
| }; |
| |
| var offsets = getRoundedOffsets(data, window.devicePixelRatio < 2 || !isFirefox); |
| |
| var sideA = x === 'bottom' ? 'top' : 'bottom'; |
| var sideB = y === 'right' ? 'left' : 'right'; |
| |
| // if gpuAcceleration is set to `true` and transform is supported, |
| // we use `translate3d` to apply the position to the popper we |
| // automatically use the supported prefixed version if needed |
| var prefixedProperty = getSupportedPropertyName('transform'); |
| |
| // now, let's make a step back and look at this code closely (wtf?) |
| // If the content of the popper grows once it's been positioned, it |
| // may happen that the popper gets misplaced because of the new content |
| // overflowing its reference element |
| // To avoid this problem, we provide two options (x and y), which allow |
| // the consumer to define the offset origin. |
| // If we position a popper on top of a reference element, we can set |
| // `x` to `top` to make the popper grow towards its top instead of |
| // its bottom. |
| var left = void 0, |
| top = void 0; |
| if (sideA === 'bottom') { |
| // when offsetParent is <html> the positioning is relative to the bottom of the screen (excluding the scrollbar) |
| // and not the bottom of the html element |
| if (offsetParent.nodeName === 'HTML') { |
| top = -offsetParent.clientHeight + offsets.bottom; |
| } else { |
| top = -offsetParentRect.height + offsets.bottom; |
| } |
| } else { |
| top = offsets.top; |
| } |
| if (sideB === 'right') { |
| if (offsetParent.nodeName === 'HTML') { |
| left = -offsetParent.clientWidth + offsets.right; |
| } else { |
| left = -offsetParentRect.width + offsets.right; |
| } |
| } else { |
| left = offsets.left; |
| } |
| if (gpuAcceleration && prefixedProperty) { |
| styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)'; |
| styles[sideA] = 0; |
| styles[sideB] = 0; |
| styles.willChange = 'transform'; |
| } else { |
| // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties |
| var invertTop = sideA === 'bottom' ? -1 : 1; |
| var invertLeft = sideB === 'right' ? -1 : 1; |
| styles[sideA] = top * invertTop; |
| styles[sideB] = left * invertLeft; |
| styles.willChange = sideA + ', ' + sideB; |
| } |
| |
| // Attributes |
| var attributes = { |
| 'x-placement': data.placement |
| }; |
| |
| // Update `data` attributes, styles and arrowStyles |
| data.attributes = _extends({}, attributes, data.attributes); |
| data.styles = _extends({}, styles, data.styles); |
| data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles); |
| |
| return data; |
| } |
| |
| /** |
| * Helper used to know if the given modifier depends from another one.<br /> |
| * It checks if the needed modifier is listed and enabled. |
| * @method |
| * @memberof Popper.Utils |
| * @param {Array} modifiers - list of modifiers |
| * @param {String} requestingName - name of requesting modifier |
| * @param {String} requestedName - name of requested modifier |
| * @returns {Boolean} |
| */ |
| function isModifierRequired(modifiers, requestingName, requestedName) { |
| var requesting = find(modifiers, function (_ref) { |
| var name = _ref.name; |
| return name === requestingName; |
| }); |
| |
| var isRequired = !!requesting && modifiers.some(function (modifier) { |
| return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order; |
| }); |
| |
| if (!isRequired) { |
| var _requesting = '`' + requestingName + '`'; |
| var requested = '`' + requestedName + '`'; |
| console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!'); |
| } |
| return isRequired; |
| } |
| |
| /** |
| * @function |
| * @memberof Modifiers |
| * @argument {Object} data - The data object generated by update method |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {Object} The data object, properly modified |
| */ |
| function arrow(data, options) { |
| var _data$offsets$arrow; |
| |
| // arrow depends on keepTogether in order to work |
| if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) { |
| return data; |
| } |
| |
| var arrowElement = options.element; |
| |
| // if arrowElement is a string, suppose it's a CSS selector |
| if (typeof arrowElement === 'string') { |
| arrowElement = data.instance.popper.querySelector(arrowElement); |
| |
| // if arrowElement is not found, don't run the modifier |
| if (!arrowElement) { |
| return data; |
| } |
| } else { |
| // if the arrowElement isn't a query selector we must check that the |
| // provided DOM node is child of its popper node |
| if (!data.instance.popper.contains(arrowElement)) { |
| console.warn('WARNING: `arrow.element` must be child of its popper element!'); |
| return data; |
| } |
| } |
| |
| var placement = data.placement.split('-')[0]; |
| var _data$offsets = data.offsets, |
| popper = _data$offsets.popper, |
| reference = _data$offsets.reference; |
| |
| var isVertical = ['left', 'right'].indexOf(placement) !== -1; |
| |
| var len = isVertical ? 'height' : 'width'; |
| var sideCapitalized = isVertical ? 'Top' : 'Left'; |
| var side = sideCapitalized.toLowerCase(); |
| var altSide = isVertical ? 'left' : 'top'; |
| var opSide = isVertical ? 'bottom' : 'right'; |
| var arrowElementSize = getOuterSizes(arrowElement)[len]; |
| |
| // |
| // extends keepTogether behavior making sure the popper and its |
| // reference have enough pixels in conjunction |
| // |
| |
| // top/left side |
| if (reference[opSide] - arrowElementSize < popper[side]) { |
| data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize); |
| } |
| // bottom/right side |
| if (reference[side] + arrowElementSize > popper[opSide]) { |
| data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide]; |
| } |
| data.offsets.popper = getClientRect(data.offsets.popper); |
| |
| // compute center of the popper |
| var center = reference[side] + reference[len] / 2 - arrowElementSize / 2; |
| |
| // Compute the sideValue using the updated popper offsets |
| // take popper margin in account because we don't have this info available |
| var css = getStyleComputedProperty(data.instance.popper); |
| var popperMarginSide = parseFloat(css['margin' + sideCapitalized], 10); |
| var popperBorderSide = parseFloat(css['border' + sideCapitalized + 'Width'], 10); |
| var sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide; |
| |
| // prevent arrowElement from being placed not contiguously to its popper |
| sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0); |
| |
| data.arrowElement = arrowElement; |
| data.offsets.arrow = (_data$offsets$arrow = {}, defineProperty(_data$offsets$arrow, side, Math.round(sideValue)), defineProperty(_data$offsets$arrow, altSide, ''), _data$offsets$arrow); |
| |
| return data; |
| } |
| |
| /** |
| * Get the opposite placement variation of the given one |
| * @method |
| * @memberof Popper.Utils |
| * @argument {String} placement variation |
| * @returns {String} flipped placement variation |
| */ |
| function getOppositeVariation(variation) { |
| if (variation === 'end') { |
| return 'start'; |
| } else if (variation === 'start') { |
| return 'end'; |
| } |
| return variation; |
| } |
| |
| /** |
| * List of accepted placements to use as values of the `placement` option.<br /> |
| * Valid placements are: |
| * - `auto` |
| * - `top` |
| * - `right` |
| * - `bottom` |
| * - `left` |
| * |
| * Each placement can have a variation from this list: |
| * - `-start` |
| * - `-end` |
| * |
| * Variations are interpreted easily if you think of them as the left to right |
| * written languages. Horizontally (`top` and `bottom`), `start` is left and `end` |
| * is right.<br /> |
| * Vertically (`left` and `right`), `start` is top and `end` is bottom. |
| * |
| * Some valid examples are: |
| * - `top-end` (on top of reference, right aligned) |
| * - `right-start` (on right of reference, top aligned) |
| * - `bottom` (on bottom, centered) |
| * - `auto-end` (on the side with more space available, alignment depends by placement) |
| * |
| * @static |
| * @type {Array} |
| * @enum {String} |
| * @readonly |
| * @method placements |
| * @memberof Popper |
| */ |
| var placements = ['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']; |
| |
| // Get rid of `auto` `auto-start` and `auto-end` |
| var validPlacements = placements.slice(3); |
| |
| /** |
| * Given an initial placement, returns all the subsequent placements |
| * clockwise (or counter-clockwise). |
| * |
| * @method |
| * @memberof Popper.Utils |
| * @argument {String} placement - A valid placement (it accepts variations) |
| * @argument {Boolean} counter - Set to true to walk the placements counterclockwise |
| * @returns {Array} placements including their variations |
| */ |
| function clockwise(placement) { |
| var counter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false; |
| |
| var index = validPlacements.indexOf(placement); |
| var arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index)); |
| return counter ? arr.reverse() : arr; |
| } |
| |
| var BEHAVIORS = { |
| FLIP: 'flip', |
| CLOCKWISE: 'clockwise', |
| COUNTERCLOCKWISE: 'counterclockwise' |
| }; |
| |
| /** |
| * @function |
| * @memberof Modifiers |
| * @argument {Object} data - The data object generated by update method |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {Object} The data object, properly modified |
| */ |
| function flip(data, options) { |
| // if `inner` modifier is enabled, we can't use the `flip` modifier |
| if (isModifierEnabled(data.instance.modifiers, 'inner')) { |
| return data; |
| } |
| |
| if (data.flipped && data.placement === data.originalPlacement) { |
| // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides |
| return data; |
| } |
| |
| var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement, data.positionFixed); |
| |
| var placement = data.placement.split('-')[0]; |
| var placementOpposite = getOppositePlacement(placement); |
| var variation = data.placement.split('-')[1] || ''; |
| |
| var flipOrder = []; |
| |
| switch (options.behavior) { |
| case BEHAVIORS.FLIP: |
| flipOrder = [placement, placementOpposite]; |
| break; |
| case BEHAVIORS.CLOCKWISE: |
| flipOrder = clockwise(placement); |
| break; |
| case BEHAVIORS.COUNTERCLOCKWISE: |
| flipOrder = clockwise(placement, true); |
| break; |
| default: |
| flipOrder = options.behavior; |
| } |
| |
| flipOrder.forEach(function (step, index) { |
| if (placement !== step || flipOrder.length === index + 1) { |
| return data; |
| } |
| |
| placement = data.placement.split('-')[0]; |
| placementOpposite = getOppositePlacement(placement); |
| |
| var popperOffsets = data.offsets.popper; |
| var refOffsets = data.offsets.reference; |
| |
| // using floor because the reference offsets may contain decimals we are not going to consider here |
| var floor = Math.floor; |
| var overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom); |
| |
| var overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left); |
| var overflowsRight = floor(popperOffsets.right) > floor(boundaries.right); |
| var overflowsTop = floor(popperOffsets.top) < floor(boundaries.top); |
| var overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom); |
| |
| var overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom; |
| |
| // flip the variation if required |
| var isVertical = ['top', 'bottom'].indexOf(placement) !== -1; |
| |
| // flips variation if reference element overflows boundaries |
| var flippedVariationByRef = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom); |
| |
| // flips variation if popper content overflows boundaries |
| var flippedVariationByContent = !!options.flipVariationsByContent && (isVertical && variation === 'start' && overflowsRight || isVertical && variation === 'end' && overflowsLeft || !isVertical && variation === 'start' && overflowsBottom || !isVertical && variation === 'end' && overflowsTop); |
| |
| var flippedVariation = flippedVariationByRef || flippedVariationByContent; |
| |
| if (overlapsRef || overflowsBoundaries || flippedVariation) { |
| // this boolean to detect any flip loop |
| data.flipped = true; |
| |
| if (overlapsRef || overflowsBoundaries) { |
| placement = flipOrder[index + 1]; |
| } |
| |
| if (flippedVariation) { |
| variation = getOppositeVariation(variation); |
| } |
| |
| data.placement = placement + (variation ? '-' + variation : ''); |
| |
| // this object contains `position`, we want to preserve it along with |
| // any additional property we may add in the future |
| data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement)); |
| |
| data = runModifiers(data.instance.modifiers, data, 'flip'); |
| } |
| }); |
| return data; |
| } |
| |
| /** |
| * @function |
| * @memberof Modifiers |
| * @argument {Object} data - The data object generated by update method |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {Object} The data object, properly modified |
| */ |
| function keepTogether(data) { |
| var _data$offsets = data.offsets, |
| popper = _data$offsets.popper, |
| reference = _data$offsets.reference; |
| |
| var placement = data.placement.split('-')[0]; |
| var floor = Math.floor; |
| var isVertical = ['top', 'bottom'].indexOf(placement) !== -1; |
| var side = isVertical ? 'right' : 'bottom'; |
| var opSide = isVertical ? 'left' : 'top'; |
| var measurement = isVertical ? 'width' : 'height'; |
| |
| if (popper[side] < floor(reference[opSide])) { |
| data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement]; |
| } |
| if (popper[opSide] > floor(reference[side])) { |
| data.offsets.popper[opSide] = floor(reference[side]); |
| } |
| |
| return data; |
| } |
| |
| /** |
| * Converts a string containing value + unit into a px value number |
| * @function |
| * @memberof {modifiers~offset} |
| * @private |
| * @argument {String} str - Value + unit string |
| * @argument {String} measurement - `height` or `width` |
| * @argument {Object} popperOffsets |
| * @argument {Object} referenceOffsets |
| * @returns {Number|String} |
| * Value in pixels, or original string if no values were extracted |
| */ |
| function toValue(str, measurement, popperOffsets, referenceOffsets) { |
| // separate value from unit |
| var split = str.match(/((?:\-|\+)?\d*\.?\d*)(.*)/); |
| var value = +split[1]; |
| var unit = split[2]; |
| |
| // If it's not a number it's an operator, I guess |
| if (!value) { |
| return str; |
| } |
| |
| if (unit.indexOf('%') === 0) { |
| var element = void 0; |
| switch (unit) { |
| case '%p': |
| element = popperOffsets; |
| break; |
| case '%': |
| case '%r': |
| default: |
| element = referenceOffsets; |
| } |
| |
| var rect = getClientRect(element); |
| return rect[measurement] / 100 * value; |
| } else if (unit === 'vh' || unit === 'vw') { |
| // if is a vh or vw, we calculate the size based on the viewport |
| var size = void 0; |
| if (unit === 'vh') { |
| size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0); |
| } else { |
| size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0); |
| } |
| return size / 100 * value; |
| } else { |
| // if is an explicit pixel unit, we get rid of the unit and keep the value |
| // if is an implicit unit, it's px, and we return just the value |
| return value; |
| } |
| } |
| |
| /** |
| * Parse an `offset` string to extrapolate `x` and `y` numeric offsets. |
| * @function |
| * @memberof {modifiers~offset} |
| * @private |
| * @argument {String} offset |
| * @argument {Object} popperOffsets |
| * @argument {Object} referenceOffsets |
| * @argument {String} basePlacement |
| * @returns {Array} a two cells array with x and y offsets in numbers |
| */ |
| function parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) { |
| var offsets = [0, 0]; |
| |
| // Use height if placement is left or right and index is 0 otherwise use width |
| // in this way the first offset will use an axis and the second one |
| // will use the other one |
| var useHeight = ['right', 'left'].indexOf(basePlacement) !== -1; |
| |
| // Split the offset string to obtain a list of values and operands |
| // The regex addresses values with the plus or minus sign in front (+10, -20, etc) |
| var fragments = offset.split(/(\+|\-)/).map(function (frag) { |
| return frag.trim(); |
| }); |
| |
| // Detect if the offset string contains a pair of values or a single one |
| // they could be separated by comma or space |
| var divider = fragments.indexOf(find(fragments, function (frag) { |
| return frag.search(/,|\s/) !== -1; |
| })); |
| |
| if (fragments[divider] && fragments[divider].indexOf(',') === -1) { |
| console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.'); |
| } |
| |
| // If divider is found, we divide the list of values and operands to divide |
| // them by ofset X and Y. |
| var splitRegex = /\s*,\s*|\s+/; |
| var ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments]; |
| |
| // Convert the values with units to absolute pixels to allow our computations |
| ops = ops.map(function (op, index) { |
| // Most of the units rely on the orientation of the popper |
| var measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width'; |
| var mergeWithPrevious = false; |
| return op |
| // This aggregates any `+` or `-` sign that aren't considered operators |
| // e.g.: 10 + +5 => [10, +, +5] |
| .reduce(function (a, b) { |
| if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) { |
| a[a.length - 1] = b; |
| mergeWithPrevious = true; |
| return a; |
| } else if (mergeWithPrevious) { |
| a[a.length - 1] += b; |
| mergeWithPrevious = false; |
| return a; |
| } else { |
| return a.concat(b); |
| } |
| }, []) |
| // Here we convert the string values into number values (in px) |
| .map(function (str) { |
| return toValue(str, measurement, popperOffsets, referenceOffsets); |
| }); |
| }); |
| |
| // Loop trough the offsets arrays and execute the operations |
| ops.forEach(function (op, index) { |
| op.forEach(function (frag, index2) { |
| if (isNumeric(frag)) { |
| offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1); |
| } |
| }); |
| }); |
| return offsets; |
| } |
| |
| /** |
| * @function |
| * @memberof Modifiers |
| * @argument {Object} data - The data object generated by update method |
| * @argument {Object} options - Modifiers configuration and options |
| * @argument {Number|String} options.offset=0 |
| * The offset value as described in the modifier description |
| * @returns {Object} The data object, properly modified |
| */ |
| function offset(data, _ref) { |
| var offset = _ref.offset; |
| var placement = data.placement, |
| _data$offsets = data.offsets, |
| popper = _data$offsets.popper, |
| reference = _data$offsets.reference; |
| |
| var basePlacement = placement.split('-')[0]; |
| |
| var offsets = void 0; |
| if (isNumeric(+offset)) { |
| offsets = [+offset, 0]; |
| } else { |
| offsets = parseOffset(offset, popper, reference, basePlacement); |
| } |
| |
| if (basePlacement === 'left') { |
| popper.top += offsets[0]; |
| popper.left -= offsets[1]; |
| } else if (basePlacement === 'right') { |
| popper.top += offsets[0]; |
| popper.left += offsets[1]; |
| } else if (basePlacement === 'top') { |
| popper.left += offsets[0]; |
| popper.top -= offsets[1]; |
| } else if (basePlacement === 'bottom') { |
| popper.left += offsets[0]; |
| popper.top += offsets[1]; |
| } |
| |
| data.popper = popper; |
| return data; |
| } |
| |
| /** |
| * @function |
| * @memberof Modifiers |
| * @argument {Object} data - The data object generated by `update` method |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {Object} The data object, properly modified |
| */ |
| function preventOverflow(data, options) { |
| var boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper); |
| |
| // If offsetParent is the reference element, we really want to |
| // go one step up and use the next offsetParent as reference to |
| // avoid to make this modifier completely useless and look like broken |
| if (data.instance.reference === boundariesElement) { |
| boundariesElement = getOffsetParent(boundariesElement); |
| } |
| |
| // NOTE: DOM access here |
| // resets the popper's position so that the document size can be calculated excluding |
| // the size of the popper element itself |
| var transformProp = getSupportedPropertyName('transform'); |
| var popperStyles = data.instance.popper.style; // assignment to help minification |
| var top = popperStyles.top, |
| left = popperStyles.left, |
| transform = popperStyles[transformProp]; |
| |
| popperStyles.top = ''; |
| popperStyles.left = ''; |
| popperStyles[transformProp] = ''; |
| |
| var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement, data.positionFixed); |
| |
| // NOTE: DOM access here |
| // restores the original style properties after the offsets have been computed |
| popperStyles.top = top; |
| popperStyles.left = left; |
| popperStyles[transformProp] = transform; |
| |
| options.boundaries = boundaries; |
| |
| var order = options.priority; |
| var popper = data.offsets.popper; |
| |
| var check = { |
| primary: function primary(placement) { |
| var value = popper[placement]; |
| if (popper[placement] < boundaries[placement] && !options.escapeWithReference) { |
| value = Math.max(popper[placement], boundaries[placement]); |
| } |
| return defineProperty({}, placement, value); |
| }, |
| secondary: function secondary(placement) { |
| var mainSide = placement === 'right' ? 'left' : 'top'; |
| var value = popper[mainSide]; |
| if (popper[placement] > boundaries[placement] && !options.escapeWithReference) { |
| value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height)); |
| } |
| return defineProperty({}, mainSide, value); |
| } |
| }; |
| |
| order.forEach(function (placement) { |
| var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary'; |
| popper = _extends({}, popper, check[side](placement)); |
| }); |
| |
| data.offsets.popper = popper; |
| |
| return data; |
| } |
| |
| /** |
| * @function |
| * @memberof Modifiers |
| * @argument {Object} data - The data object generated by `update` method |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {Object} The data object, properly modified |
| */ |
| function shift(data) { |
| var placement = data.placement; |
| var basePlacement = placement.split('-')[0]; |
| var shiftvariation = placement.split('-')[1]; |
| |
| // if shift shiftvariation is specified, run the modifier |
| if (shiftvariation) { |
| var _data$offsets = data.offsets, |
| reference = _data$offsets.reference, |
| popper = _data$offsets.popper; |
| |
| var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1; |
| var side = isVertical ? 'left' : 'top'; |
| var measurement = isVertical ? 'width' : 'height'; |
| |
| var shiftOffsets = { |
| start: defineProperty({}, side, reference[side]), |
| end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement]) |
| }; |
| |
| data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]); |
| } |
| |
| return data; |
| } |
| |
| /** |
| * @function |
| * @memberof Modifiers |
| * @argument {Object} data - The data object generated by update method |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {Object} The data object, properly modified |
| */ |
| function hide(data) { |
| if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) { |
| return data; |
| } |
| |
| var refRect = data.offsets.reference; |
| var bound = find(data.instance.modifiers, function (modifier) { |
| return modifier.name === 'preventOverflow'; |
| }).boundaries; |
| |
| if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) { |
| // Avoid unnecessary DOM access if visibility hasn't changed |
| if (data.hide === true) { |
| return data; |
| } |
| |
| data.hide = true; |
| data.attributes['x-out-of-boundaries'] = ''; |
| } else { |
| // Avoid unnecessary DOM access if visibility hasn't changed |
| if (data.hide === false) { |
| return data; |
| } |
| |
| data.hide = false; |
| data.attributes['x-out-of-boundaries'] = false; |
| } |
| |
| return data; |
| } |
| |
| /** |
| * @function |
| * @memberof Modifiers |
| * @argument {Object} data - The data object generated by `update` method |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {Object} The data object, properly modified |
| */ |
| function inner(data) { |
| var placement = data.placement; |
| var basePlacement = placement.split('-')[0]; |
| var _data$offsets = data.offsets, |
| popper = _data$offsets.popper, |
| reference = _data$offsets.reference; |
| |
| var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1; |
| |
| var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1; |
| |
| popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0); |
| |
| data.placement = getOppositePlacement(placement); |
| data.offsets.popper = getClientRect(popper); |
| |
| return data; |
| } |
| |
| /** |
| * Modifier function, each modifier can have a function of this type assigned |
| * to its `fn` property.<br /> |
| * These functions will be called on each update, this means that you must |
| * make sure they are performant enough to avoid performance bottlenecks. |
| * |
| * @function ModifierFn |
| * @argument {dataObject} data - The data object generated by `update` method |
| * @argument {Object} options - Modifiers configuration and options |
| * @returns {dataObject} The data object, properly modified |
| */ |
| |
| /** |
| * Modifiers are plugins used to alter the behavior of your poppers.<br /> |
| * Popper.js uses a set of 9 modifiers to provide all the basic functionalities |
| * needed by the library. |
| * |
| * Usually you don't want to override the `order`, `fn` and `onLoad` props. |
| * All the other properties are configurations that could be tweaked. |
| * @namespace modifiers |
| */ |
| var modifiers = { |
| /** |
| * Modifier used to shift the popper on the start or end of its reference |
| * element.<br /> |
| * It will read the variation of the `placement` property.<br /> |
| * It can be one either `-end` or `-start`. |
| * @memberof modifiers |
| * @inner |
| */ |
| shift: { |
| /** @prop {number} order=100 - Index used to define the order of execution */ |
| order: 100, |
| /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ |
| enabled: true, |
| /** @prop {ModifierFn} */ |
| fn: shift |
| }, |
| |
| /** |
| * The `offset` modifier can shift your popper on both its axis. |
| * |
| * It accepts the following units: |
| * - `px` or unit-less, interpreted as pixels |
| * - `%` or `%r`, percentage relative to the length of the reference element |
| * - `%p`, percentage relative to the length of the popper element |
| * - `vw`, CSS viewport width unit |
| * - `vh`, CSS viewport height unit |
| * |
| * For length is intended the main axis relative to the placement of the popper.<br /> |
| * This means that if the placement is `top` or `bottom`, the length will be the |
| * `width`. In case of `left` or `right`, it will be the `height`. |
| * |
| * You can provide a single value (as `Number` or `String`), or a pair of values |
| * as `String` divided by a comma or one (or more) white spaces.<br /> |
| * The latter is a deprecated method because it leads to confusion and will be |
| * removed in v2.<br /> |
| * Additionally, it accepts additions and subtractions between different units. |
| * Note that multiplications and divisions aren't supported. |
| * |
| * Valid examples are: |
| * ``` |
| * 10 |
| * '10%' |
| * '10, 10' |
| * '10%, 10' |
| * '10 + 10%' |
| * '10 - 5vh + 3%' |
| * '-10px + 5vh, 5px - 6%' |
| * ``` |
| * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap |
| * > with their reference element, unfortunately, you will have to disable the `flip` modifier. |
| * > You can read more on this at this [issue](https://github.com/FezVrasta/popper.js/issues/373). |
| * |
| * @memberof modifiers |
| * @inner |
| */ |
| offset: { |
| /** @prop {number} order=200 - Index used to define the order of execution */ |
| order: 200, |
| /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ |
| enabled: true, |
| /** @prop {ModifierFn} */ |
| fn: offset, |
| /** @prop {Number|String} offset=0 |
| * The offset value as described in the modifier description |
| */ |
| offset: 0 |
| }, |
| |
| /** |
| * Modifier used to prevent the popper from being positioned outside the boundary. |
| * |
| * A scenario exists where the reference itself is not within the boundaries.<br /> |
| * We can say it has "escaped the boundaries" — or just "escaped".<br /> |
| * In this case we need to decide whether the popper should either: |
| * |
| * - detach from the reference and remain "trapped" in the boundaries, or |
| * - if it should ignore the boundary and "escape with its reference" |
| * |
| * When `escapeWithReference` is set to`true` and reference is completely |
| * outside its boundaries, the popper will overflow (or completely leave) |
| * the boundaries in order to remain attached to the edge of the reference. |
| * |
| * @memberof modifiers |
| * @inner |
| */ |
| preventOverflow: { |
| /** @prop {number} order=300 - Index used to define the order of execution */ |
| order: 300, |
| /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ |
| enabled: true, |
| /** @prop {ModifierFn} */ |
| fn: preventOverflow, |
| /** |
| * @prop {Array} [priority=['left','right','top','bottom']] |
| * Popper will try to prevent overflow following these priorities by default, |
| * then, it could overflow on the left and on top of the `boundariesElement` |
| */ |
| priority: ['left', 'right', 'top', 'bottom'], |
| /** |
| * @prop {number} padding=5 |
| * Amount of pixel used to define a minimum distance between the boundaries |
| * and the popper. This makes sure the popper always has a little padding |
| * between the edges of its container |
| */ |
| padding: 5, |
| /** |
| * @prop {String|HTMLElement} boundariesElement='scrollParent' |
| * Boundaries used by the modifier. Can be `scrollParent`, `window`, |
| * `viewport` or any DOM element. |
| */ |
| boundariesElement: 'scrollParent' |
| }, |
| |
| /** |
| * Modifier used to make sure the reference and its popper stay near each other |
| * without leaving any gap between the two. Especially useful when the arrow is |
| * enabled and you want to ensure that it points to its reference element. |
| * It cares only about the first axis. You can still have poppers with margin |
| * between the popper and its reference element. |
| * @memberof modifiers |
| * @inner |
| */ |
| keepTogether: { |
| /** @prop {number} order=400 - Index used to define the order of execution */ |
| order: 400, |
| /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ |
| enabled: true, |
| /** @prop {ModifierFn} */ |
| fn: keepTogether |
| }, |
| |
| /** |
| * This modifier is used to move the `arrowElement` of the popper to make |
| * sure it is positioned between the reference element and its popper element. |
| * It will read the outer size of the `arrowElement` node to detect how many |
| * pixels of conjunction are needed. |
| * |
| * It has no effect if no `arrowElement` is provided. |
| * @memberof modifiers |
| * @inner |
| */ |
| arrow: { |
| /** @prop {number} order=500 - Index used to define the order of execution */ |
| order: 500, |
| /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ |
| enabled: true, |
| /** @prop {ModifierFn} */ |
| fn: arrow, |
| /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */ |
| element: '[x-arrow]' |
| }, |
| |
| /** |
| * Modifier used to flip the popper's placement when it starts to overlap its |
| * reference element. |
| * |
| * Requires the `preventOverflow` modifier before it in order to work. |
| * |
| * **NOTE:** this modifier will interrupt the current update cycle and will |
| * restart it if it detects the need to flip the placement. |
| * @memberof modifiers |
| * @inner |
| */ |
| flip: { |
| /** @prop {number} order=600 - Index used to define the order of execution */ |
| order: 600, |
| /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ |
| enabled: true, |
| /** @prop {ModifierFn} */ |
| fn: flip, |
| /** |
| * @prop {String|Array} behavior='flip' |
| * The behavior used to change the popper's placement. It can be one of |
| * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid |
| * placements (with optional variations) |
| */ |
| behavior: 'flip', |
| /** |
| * @prop {number} padding=5 |
| * The popper will flip if it hits the edges of the `boundariesElement` |
| */ |
| padding: 5, |
| /** |
| * @prop {String|HTMLElement} boundariesElement='viewport' |
| * The element which will define the boundaries of the popper position. |
| * The popper will never be placed outside of the defined boundaries |
| * (except if `keepTogether` is enabled) |
| */ |
| boundariesElement: 'viewport', |
| /** |
| * @prop {Boolean} flipVariations=false |
| * The popper will switch placement variation between `-start` and `-end` when |
| * the reference element overlaps its boundaries. |
| * |
| * The original placement should have a set variation. |
| */ |
| flipVariations: false, |
| /** |
| * @prop {Boolean} flipVariationsByContent=false |
| * The popper will switch placement variation between `-start` and `-end` when |
| * the popper element overlaps its reference boundaries. |
| * |
| * The original placement should have a set variation. |
| */ |
| flipVariationsByContent: false |
| }, |
| |
| /** |
| * Modifier used to make the popper flow toward the inner of the reference element. |
| * By default, when this modifier is disabled, the popper will be placed outside |
| * the reference element. |
| * @memberof modifiers |
| * @inner |
| */ |
| inner: { |
| /** @prop {number} order=700 - Index used to define the order of execution */ |
| order: 700, |
| /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */ |
| enabled: false, |
| /** @prop {ModifierFn} */ |
| fn: inner |
| }, |
| |
| /** |
| * Modifier used to hide the popper when its reference element is outside of the |
| * popper boundaries. It will set a `x-out-of-boundaries` attribute which can |
| * be used to hide with a CSS selector the popper when its reference is |
| * out of boundaries. |
| * |
| * Requires the `preventOverflow` modifier before it in order to work. |
| * @memberof modifiers |
| * @inner |
| */ |
| hide: { |
| /** @prop {number} order=800 - Index used to define the order of execution */ |
| order: 800, |
| /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ |
| enabled: true, |
| /** @prop {ModifierFn} */ |
| fn: hide |
| }, |
| |
| /** |
| * Computes the style that will be applied to the popper element to gets |
| * properly positioned. |
| * |
| * Note that this modifier will not touch the DOM, it just prepares the styles |
| * so that `applyStyle` modifier can apply it. This separation is useful |
| * in case you need to replace `applyStyle` with a custom implementation. |
| * |
| * This modifier has `850` as `order` value to maintain backward compatibility |
| * with previous versions of Popper.js. Expect the modifiers ordering method |
| * to change in future major versions of the library. |
| * |
| * @memberof modifiers |
| * @inner |
| */ |
| computeStyle: { |
| /** @prop {number} order=850 - Index used to define the order of execution */ |
| order: 850, |
| /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ |
| enabled: true, |
| /** @prop {ModifierFn} */ |
| fn: computeStyle, |
| /** |
| * @prop {Boolean} gpuAcceleration=true |
| * If true, it uses the CSS 3D transformation to position the popper. |
| * Otherwise, it will use the `top` and `left` properties |
| */ |
| gpuAcceleration: true, |
| /** |
| * @prop {string} [x='bottom'] |
| * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin. |
| * Change this if your popper should grow in a direction different from `bottom` |
| */ |
| x: 'bottom', |
| /** |
| * @prop {string} [x='left'] |
| * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin. |
| * Change this if your popper should grow in a direction different from `right` |
| */ |
| y: 'right' |
| }, |
| |
| /** |
| * Applies the computed styles to the popper element. |
| * |
| * All the DOM manipulations are limited to this modifier. This is useful in case |
| * you want to integrate Popper.js inside a framework or view library and you |
| * want to delegate all the DOM manipulations to it. |
| * |
| * Note that if you disable this modifier, you must make sure the popper element |
| * has its position set to `absolute` before Popper.js can do its work! |
| * |
| * Just disable this modifier and define your own to achieve the desired effect. |
| * |
| * @memberof modifiers |
| * @inner |
| */ |
| applyStyle: { |
| /** @prop {number} order=900 - Index used to define the order of execution */ |
| order: 900, |
| /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ |
| enabled: true, |
| /** @prop {ModifierFn} */ |
| fn: applyStyle, |
| /** @prop {Function} */ |
| onLoad: applyStyleOnLoad, |
| /** |
| * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier |
| * @prop {Boolean} gpuAcceleration=true |
| * If true, it uses the CSS 3D transformation to position the popper. |
| * Otherwise, it will use the `top` and `left` properties |
| */ |
| gpuAcceleration: undefined |
| } |
| }; |
| |
| /** |
| * The `dataObject` is an object containing all the information used by Popper.js. |
| * This object is passed to modifiers and to the `onCreate` and `onUpdate` callbacks. |
| * @name dataObject |
| * @property {Object} data.instance The Popper.js instance |
| * @property {String} data.placement Placement applied to popper |
| * @property {String} data.originalPlacement Placement originally defined on init |
| * @property {Boolean} data.flipped True if popper has been flipped by flip modifier |
| * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper |
| * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier |
| * @property {Object} data.styles Any CSS property defined here will be applied to the popper. It expects the JavaScript nomenclature (eg. `marginBottom`) |
| * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow. It expects the JavaScript nomenclature (eg. `marginBottom`) |
| * @property {Object} data.boundaries Offsets of the popper boundaries |
| * @property {Object} data.offsets The measurements of popper, reference and arrow elements |
| * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values |
| * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values |
| * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0 |
| */ |
| |
| /** |
| * Default options provided to Popper.js constructor.<br /> |
| * These can be overridden using the `options` argument of Popper.js.<br /> |
| * To override an option, simply pass an object with the same |
| * structure of the `options` object, as the 3rd argument. For example: |
| * ``` |
| * new Popper(ref, pop, { |
| * modifiers: { |
| * preventOverflow: { enabled: false } |
| * } |
| * }) |
| * ``` |
| * @type {Object} |
| * @static |
| * @memberof Popper |
| */ |
| var Defaults = { |
| /** |
| * Popper's placement. |
| * @prop {Popper.placements} placement='bottom' |
| */ |
| placement: 'bottom', |
| |
| /** |
| * Set this to true if you want popper to position it self in 'fixed' mode |
| * @prop {Boolean} positionFixed=false |
| */ |
| positionFixed: false, |
| |
| /** |
| * Whether events (resize, scroll) are initially enabled. |
| * @prop {Boolean} eventsEnabled=true |
| */ |
| eventsEnabled: true, |
| |
| /** |
| * Set to true if you want to automatically remove the popper when |
| * you call the `destroy` method. |
| * @prop {Boolean} removeOnDestroy=false |
| */ |
| removeOnDestroy: false, |
| |
| /** |
| * Callback called when the popper is created.<br /> |
| * By default, it is set to no-op.<br /> |
| * Access Popper.js instance with `data.instance`. |
| * @prop {onCreate} |
| */ |
| onCreate: function onCreate() {}, |
| |
| /** |
| * Callback called when the popper is updated. This callback is not called |
| * on the initialization/creation of the popper, but only on subsequent |
| * updates.<br /> |
| * By default, it is set to no-op.<br /> |
| * Access Popper.js instance with `data.instance`. |
| * @prop {onUpdate} |
| */ |
| onUpdate: function onUpdate() {}, |
| |
| /** |
| * List of modifiers used to modify the offsets before they are applied to the popper. |
| * They provide most of the functionalities of Popper.js. |
| * @prop {modifiers} |
| */ |
| modifiers: modifiers |
| }; |
| |
| /** |
| * @callback onCreate |
| * @param {dataObject} data |
| */ |
| |
| /** |
| * @callback onUpdate |
| * @param {dataObject} data |
| */ |
| |
| // Utils |
| // Methods |
| var Popper = function () { |
| /** |
| * Creates a new Popper.js instance. |
| * @class Popper |
| * @param {Element|referenceObject} reference - The reference element used to position the popper |
| * @param {Element} popper - The HTML / XML element used as the popper |
| * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults) |
| * @return {Object} instance - The generated Popper.js instance |
| */ |
| function Popper(reference, popper) { |
| var _this = this; |
| |
| var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {}; |
| classCallCheck(this, Popper); |
| |
| this.scheduleUpdate = function () { |
| return requestAnimationFrame(_this.update); |
| }; |
| |
| // make update() debounced, so that it only runs at most once-per-tick |
| this.update = debounce(this.update.bind(this)); |
| |
| // with {} we create a new object with the options inside it |
| this.options = _extends({}, Popper.Defaults, options); |
| |
| // init state |
| this.state = { |
| isDestroyed: false, |
| isCreated: false, |
| scrollParents: [] |
| }; |
| |
| // get reference and popper elements (allow jQuery wrappers) |
| this.reference = reference && reference.jquery ? reference[0] : reference; |
| this.popper = popper && popper.jquery ? popper[0] : popper; |
| |
| // Deep merge modifiers options |
| this.options.modifiers = {}; |
| Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(function (name) { |
| _this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {}); |
| }); |
| |
| // Refactoring modifiers' list (Object => Array) |
| this.modifiers = Object.keys(this.options.modifiers).map(function (name) { |
| return _extends({ |
| name: name |
| }, _this.options.modifiers[name]); |
| }) |
| // sort the modifiers by order |
| .sort(function (a, b) { |
| return a.order - b.order; |
| }); |
| |
| // modifiers have the ability to execute arbitrary code when Popper.js get inited |
| // such code is executed in the same order of its modifier |
| // they could add new properties to their options configuration |
| // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`! |
| this.modifiers.forEach(function (modifierOptions) { |
| if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) { |
| modifierOptions.onLoad(_this.reference, _this.popper, _this.options, modifierOptions, _this.state); |
| } |
| }); |
| |
| // fire the first update to position the popper in the right place |
| this.update(); |
| |
| var eventsEnabled = this.options.eventsEnabled; |
| if (eventsEnabled) { |
| // setup event listeners, they will take care of update the position in specific situations |
| this.enableEventListeners(); |
| } |
| |
| this.state.eventsEnabled = eventsEnabled; |
| } |
| |
| // We can't use class properties because they don't get listed in the |
| // class prototype and break stuff like Sinon stubs |
| |
| |
| createClass(Popper, [{ |
| key: 'update', |
| value: function update$$1() { |
| return update.call(this); |
| } |
| }, { |
| key: 'destroy', |
| value: function destroy$$1() { |
| return destroy.call(this); |
| } |
| }, { |
| key: 'enableEventListeners', |
| value: function enableEventListeners$$1() { |
| return enableEventListeners.call(this); |
| } |
| }, { |
| key: 'disableEventListeners', |
| value: function disableEventListeners$$1() { |
| return disableEventListeners.call(this); |
| } |
| |
| /** |
| * Schedules an update. It will run on the next UI update available. |
| * @method scheduleUpdate |
| * @memberof Popper |
| */ |
| |
| |
| /** |
| * Collection of utilities useful when writing custom modifiers. |
| * Starting from version 1.7, this method is available only if you |
| * include `popper-utils.js` before `popper.js`. |
| * |
| * **DEPRECATION**: This way to access PopperUtils is deprecated |
| * and will be removed in v2! Use the PopperUtils module directly instead. |
| * Due to the high instability of the methods contained in Utils, we can't |
| * guarantee them to follow semver. Use them at your own risk! |
| * @static |
| * @private |
| * @type {Object} |
| * @deprecated since version 1.8 |
| * @member Utils |
| * @memberof Popper |
| */ |
| |
| }]); |
| return Popper; |
| }(); |
| |
| /** |
| * The `referenceObject` is an object that provides an interface compatible with Popper.js |
| * and lets you use it as replacement of a real DOM node.<br /> |
| * You can use this method to position a popper relatively to a set of coordinates |
| * in case you don't have a DOM node to use as reference. |
| * |
| * ``` |
| * new Popper(referenceObject, popperNode); |
| * ``` |
| * |
| * NB: This feature isn't supported in Internet Explorer 10. |
| * @name referenceObject |
| * @property {Function} data.getBoundingClientRect |
| * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method. |
| * @property {number} data.clientWidth |
| * An ES6 getter that will return the width of the virtual reference element. |
| * @property {number} data.clientHeight |
| * An ES6 getter that will return the height of the virtual reference element. |
| */ |
| |
| |
| Popper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils; |
| Popper.placements = placements; |
| Popper.Defaults = Defaults; |
| |
| return Popper; |
| |
| }))); |
| //# sourceMappingURL=popper.js.map |