PK!popper-utils.min.js.mapnu[{"version":3,"file":"popper-utils.min.js","sources":["../src/utils/getStyleComputedProperty.js","../src/utils/getParentNode.js","../src/utils/getScrollParent.js","../src/utils/getReferenceNode.js","../src/utils/isBrowser.js","../src/utils/isIE.js","../src/utils/getOffsetParent.js","../src/utils/isOffsetContainer.js","../src/utils/getRoot.js","../src/utils/findCommonOffsetParent.js","../src/utils/getScroll.js","../src/utils/includeScroll.js","../src/utils/getBordersSize.js","../src/utils/getWindowSizes.js","../src/utils/getClientRect.js","../src/utils/getBoundingClientRect.js","../src/utils/getOffsetRectRelativeToArbitraryNode.js","../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../src/utils/isFixed.js","../src/utils/getFixedPositionOffsetParent.js","../src/utils/getBoundaries.js","../src/utils/computeAutoPlacement.js","../src/utils/debounce.js","../src/utils/find.js","../src/utils/findIndex.js","../src/utils/getOffsetRect.js","../src/utils/getOuterSizes.js","../src/utils/getOppositePlacement.js","../src/utils/getPopperOffsets.js","../src/utils/getReferenceOffsets.js","../src/utils/getSupportedPropertyName.js","../src/utils/isFunction.js","../src/utils/isModifierEnabled.js","../src/utils/isModifierRequired.js","../src/utils/isNumeric.js","../src/utils/getWindow.js","../src/utils/removeEventListeners.js","../src/utils/runModifiers.js","../src/utils/setAttributes.js","../src/utils/setStyles.js","../src/utils/setupEventListeners.js","../src/utils/index.js"],"sourcesContent":["/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n if (element.nodeType !== 1) {\n return [];\n }\n // NOTE: 1 DOM access here\n const window = element.ownerDocument.defaultView;\n const css = window.getComputedStyle(element, null);\n return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n if (element.nodeName === 'HTML') {\n return element;\n }\n return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n if (!element) {\n return document.body\n }\n\n switch (element.nodeName) {\n case 'HTML':\n case 'BODY':\n return element.ownerDocument.body\n case '#document':\n return element.body\n }\n\n // Firefox want us to check `-x` and `-y` variations as well\n const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {\n return element;\n }\n\n return getScrollParent(getParentNode(element));\n}\n","/**\n * Returns the reference node of the reference object, or the reference object itself.\n * @method\n * @memberof Popper.Utils\n * @param {Element|Object} reference - the reference element (the popper will be relative to this)\n * @returns {Element} parent\n */\nexport default function getReferenceNode(reference) {\n return reference && reference.referenceNode ? reference.referenceNode : reference;\n}\n","export default typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined';\n","import isBrowser from './isBrowser';\n\nconst isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);\nconst isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);\n\n/**\n * Determines if the browser is Internet Explorer\n * @method\n * @memberof Popper.Utils\n * @param {Number} version to check\n * @returns {Boolean} isIE\n */\nexport default function isIE(version) {\n if (version === 11) {\n return isIE11;\n }\n if (version === 10) {\n return isIE10;\n }\n return isIE11 || isIE10;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport isIE from './isIE';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n if (!element) {\n return document.documentElement;\n }\n\n const noOffsetParent = isIE(10) ? document.body : null;\n\n // NOTE: 1 DOM access here\n let offsetParent = element.offsetParent || null;\n // Skip hidden elements which don't have an offsetParent\n while (offsetParent === noOffsetParent && element.nextElementSibling) {\n offsetParent = (element = element.nextElementSibling).offsetParent;\n }\n\n const nodeName = offsetParent && offsetParent.nodeName;\n\n if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n return element ? element.ownerDocument.documentElement : document.documentElement;\n }\n\n // .offsetParent will return the closest TH, TD or TABLE in case\n // no offsetParent is present, I hate this job...\n if (\n ['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n getStyleComputedProperty(offsetParent, 'position') === 'static'\n ) {\n return getOffsetParent(offsetParent);\n }\n\n return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n const { nodeName } = element;\n if (nodeName === 'BODY') {\n return false;\n }\n return (\n nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n if (node.parentNode !== null) {\n return getRoot(node.parentNode);\n }\n\n return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n return document.documentElement;\n }\n\n // Here we make sure to give as \"start\" the element that comes first in the DOM\n const order =\n element1.compareDocumentPosition(element2) &\n Node.DOCUMENT_POSITION_FOLLOWING;\n const start = order ? element1 : element2;\n const end = order ? element2 : element1;\n\n // Get common ancestor container\n const range = document.createRange();\n range.setStart(start, 0);\n range.setEnd(end, 0);\n const { commonAncestorContainer } = range;\n\n // Both nodes are inside #document\n if (\n (element1 !== commonAncestorContainer &&\n element2 !== commonAncestorContainer) ||\n start.contains(end)\n ) {\n if (isOffsetContainer(commonAncestorContainer)) {\n return commonAncestorContainer;\n }\n\n return getOffsetParent(commonAncestorContainer);\n }\n\n // one of the nodes is inside shadowDOM, find which one\n const element1root = getRoot(element1);\n if (element1root.host) {\n return findCommonOffsetParent(element1root.host, element2);\n } else {\n return findCommonOffsetParent(element1, getRoot(element2).host);\n }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n const nodeName = element.nodeName;\n\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n const html = element.ownerDocument.documentElement;\n const scrollingElement = element.ownerDocument.scrollingElement || html;\n return scrollingElement[upperSide];\n }\n\n return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n const scrollTop = getScroll(element, 'top');\n const scrollLeft = getScroll(element, 'left');\n const modifier = subtract ? -1 : 1;\n rect.top += scrollTop * modifier;\n rect.bottom += scrollTop * modifier;\n rect.left += scrollLeft * modifier;\n rect.right += scrollLeft * modifier;\n return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n const sideA = axis === 'x' ? 'Left' : 'Top';\n const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n return (\n parseFloat(styles[`border${sideA}Width`]) +\n parseFloat(styles[`border${sideB}Width`])\n );\n}\n","import isIE from './isIE';\n\nfunction getSize(axis, body, html, computedStyle) {\n return Math.max(\n body[`offset${axis}`],\n body[`scroll${axis}`],\n html[`client${axis}`],\n html[`offset${axis}`],\n html[`scroll${axis}`],\n isIE(10)\n ? (parseInt(html[`offset${axis}`]) + \n parseInt(computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`]) + \n parseInt(computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]))\n : 0 \n );\n}\n\nexport default function getWindowSizes(document) {\n const body = document.body;\n const html = document.documentElement;\n const computedStyle = isIE(10) && getComputedStyle(html);\n\n return {\n height: getSize('Height', body, html, computedStyle),\n width: getSize('Width', body, html, computedStyle),\n };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n return {\n ...offsets,\n right: offsets.left + offsets.width,\n bottom: offsets.top + offsets.height,\n };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE from './isIE';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n let rect = {};\n\n // IE10 10 FIX: Please, don't ask, the element isn't\n // considered in DOM in some circumstances...\n // This isn't reproducible in IE10 compatibility mode of IE11\n try {\n if (isIE(10)) {\n rect = element.getBoundingClientRect();\n const scrollTop = getScroll(element, 'top');\n const scrollLeft = getScroll(element, 'left');\n rect.top += scrollTop;\n rect.left += scrollLeft;\n rect.bottom += scrollTop;\n rect.right += scrollLeft;\n }\n else {\n rect = element.getBoundingClientRect();\n }\n }\n catch(e){}\n\n const result = {\n left: rect.left,\n top: rect.top,\n width: rect.right - rect.left,\n height: rect.bottom - rect.top,\n };\n\n // subtract scrollbar size from sizes\n const sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};\n const width =\n sizes.width || element.clientWidth || result.width;\n const height =\n sizes.height || element.clientHeight || result.height;\n\n let horizScrollbar = element.offsetWidth - width;\n let vertScrollbar = element.offsetHeight - height;\n\n // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n // we make this check conditional for performance reasons\n if (horizScrollbar || vertScrollbar) {\n const styles = getStyleComputedProperty(element);\n horizScrollbar -= getBordersSize(styles, 'x');\n vertScrollbar -= getBordersSize(styles, 'y');\n\n result.width -= horizScrollbar;\n result.height -= vertScrollbar;\n }\n\n return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE from './isIE';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent, fixedPosition = false) {\n const isIE10 = runIsIE(10);\n const isHTML = parent.nodeName === 'HTML';\n const childrenRect = getBoundingClientRect(children);\n const parentRect = getBoundingClientRect(parent);\n const scrollParent = getScrollParent(children);\n\n const styles = getStyleComputedProperty(parent);\n const borderTopWidth = parseFloat(styles.borderTopWidth);\n const borderLeftWidth = parseFloat(styles.borderLeftWidth);\n\n // In cases where the parent is fixed, we must ignore negative scroll in offset calc\n if(fixedPosition && isHTML) {\n parentRect.top = Math.max(parentRect.top, 0);\n parentRect.left = Math.max(parentRect.left, 0);\n }\n let offsets = getClientRect({\n top: childrenRect.top - parentRect.top - borderTopWidth,\n left: childrenRect.left - parentRect.left - borderLeftWidth,\n width: childrenRect.width,\n height: childrenRect.height,\n });\n offsets.marginTop = 0;\n offsets.marginLeft = 0;\n\n // Subtract margins of documentElement in case it's being used as parent\n // we do this only on HTML because it's the only element that behaves\n // differently when margins are applied to it. The margins are included in\n // the box of the documentElement, in the other cases not.\n if (!isIE10 && isHTML) {\n const marginTop = parseFloat(styles.marginTop);\n const marginLeft = parseFloat(styles.marginLeft);\n\n offsets.top -= borderTopWidth - marginTop;\n offsets.bottom -= borderTopWidth - marginTop;\n offsets.left -= borderLeftWidth - marginLeft;\n offsets.right -= borderLeftWidth - marginLeft;\n\n // Attach marginTop and marginLeft because in some circumstances we may need them\n offsets.marginTop = marginTop;\n offsets.marginLeft = marginLeft;\n }\n\n if (\n isIE10 && !fixedPosition\n ? parent.contains(scrollParent)\n : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n ) {\n offsets = includeScroll(offsets, parent);\n }\n\n return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element, excludeScroll = false) {\n const html = element.ownerDocument.documentElement;\n const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n const width = Math.max(html.clientWidth, window.innerWidth || 0);\n const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n const scrollTop = !excludeScroll ? getScroll(html) : 0;\n const scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;\n\n const offset = {\n top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n width,\n height,\n };\n\n return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n const nodeName = element.nodeName;\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n return false;\n }\n if (getStyleComputedProperty(element, 'position') === 'fixed') {\n return true;\n }\n const parentNode = getParentNode(element);\n if (!parentNode) {\n return false;\n }\n return isFixed(parentNode);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport isIE from './isIE';\n/**\n * Finds the first parent of an element that has a transformed property defined\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} first transformed parent or documentElement\n */\n\nexport default function getFixedPositionOffsetParent(element) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element || !element.parentElement || isIE()) {\n return document.documentElement;\n }\n let el = element.parentElement;\n while (el && getStyleComputedProperty(el, 'transform') === 'none') {\n el = el.parentElement;\n }\n return el || document.documentElement;\n\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getReferenceNode from './getReferenceNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport getFixedPositionOffsetParent from './getFixedPositionOffsetParent';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @param {Boolean} fixedPosition - Is in fixed position mode\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n popper,\n reference,\n padding,\n boundariesElement,\n fixedPosition = false\n) {\n // NOTE: 1 DOM access here\n\n let boundaries = { top: 0, left: 0 };\n const offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n\n // Handle viewport case\n if (boundariesElement === 'viewport' ) {\n boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);\n }\n\n else {\n // Handle other cases based on DOM element used as boundaries\n let boundariesNode;\n if (boundariesElement === 'scrollParent') {\n boundariesNode = getScrollParent(getParentNode(reference));\n if (boundariesNode.nodeName === 'BODY') {\n boundariesNode = popper.ownerDocument.documentElement;\n }\n } else if (boundariesElement === 'window') {\n boundariesNode = popper.ownerDocument.documentElement;\n } else {\n boundariesNode = boundariesElement;\n }\n\n const offsets = getOffsetRectRelativeToArbitraryNode(\n boundariesNode,\n offsetParent,\n fixedPosition\n );\n\n // In case of HTML, we need a different computation\n if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n const { height, width } = getWindowSizes(popper.ownerDocument);\n boundaries.top += offsets.top - offsets.marginTop;\n boundaries.bottom = height + offsets.top;\n boundaries.left += offsets.left - offsets.marginLeft;\n boundaries.right = width + offsets.left;\n } else {\n // for all the other DOM elements, this one is good\n boundaries = offsets;\n }\n }\n\n // Add paddings\n padding = padding || 0;\n const isPaddingNumber = typeof padding === 'number';\n boundaries.left += isPaddingNumber ? padding : padding.left || 0; \n boundaries.top += isPaddingNumber ? padding : padding.top || 0; \n boundaries.right -= isPaddingNumber ? padding : padding.right || 0; \n boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0; \n\n return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n placement,\n refRect,\n popper,\n reference,\n boundariesElement,\n padding = 0\n) {\n if (placement.indexOf('auto') === -1) {\n return placement;\n }\n\n const boundaries = getBoundaries(\n popper,\n reference,\n padding,\n boundariesElement\n );\n\n const rects = {\n top: {\n width: boundaries.width,\n height: refRect.top - boundaries.top,\n },\n right: {\n width: boundaries.right - refRect.right,\n height: boundaries.height,\n },\n bottom: {\n width: boundaries.width,\n height: boundaries.bottom - refRect.bottom,\n },\n left: {\n width: refRect.left - boundaries.left,\n height: boundaries.height,\n },\n };\n\n const sortedAreas = Object.keys(rects)\n .map(key => ({\n key,\n ...rects[key],\n area: getArea(rects[key]),\n }))\n .sort((a, b) => b.area - a.area);\n\n const filteredAreas = sortedAreas.filter(\n ({ width, height }) =>\n width >= popper.clientWidth && height >= popper.clientHeight\n );\n\n const computedPlacement = filteredAreas.length > 0\n ? filteredAreas[0].key\n : sortedAreas[0].key;\n\n const variation = placement.split('-')[1];\n\n return computedPlacement + (variation ? `-${variation}` : '');\n}\n","import isBrowser from './isBrowser';\n\nconst timeoutDuration = (function(){\n const longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\n for (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n return 1;\n }\n }\n return 0;\n}());\n\nexport function microtaskDebounce(fn) {\n let called = false\n return () => {\n if (called) {\n return\n }\n called = true\n window.Promise.resolve().then(() => {\n called = false\n fn()\n })\n }\n}\n\nexport function taskDebounce(fn) {\n let scheduled = false;\n return () => {\n if (!scheduled) {\n scheduled = true;\n setTimeout(() => {\n scheduled = false;\n fn();\n }, timeoutDuration);\n }\n };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n ? microtaskDebounce\n : taskDebounce);\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n // use native find if supported\n if (Array.prototype.find) {\n return arr.find(check);\n }\n\n // use `filter` to obtain the same behavior of `find`\n return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n // use native findIndex if supported\n if (Array.prototype.findIndex) {\n return arr.findIndex(cur => cur[prop] === value);\n }\n\n // use `find` + `indexOf` if `findIndex` isn't supported\n const match = find(arr, obj => obj[prop] === value);\n return arr.indexOf(match);\n}\n","import getWindowSizes from './getWindowSizes';\nimport getClientRect from './getClientRect';\n\n/**\n * Get the position of the given element, relative to its offset parent\n * @method\n * @memberof Popper.Utils\n * @param {Element} element\n * @return {Object} position - Coordinates of the element and its `scrollTop`\n */\nexport default function getOffsetRect(element) {\n let elementRect;\n if (element.nodeName === 'HTML') {\n const { width, height } = getWindowSizes(element.ownerDocument);\n elementRect = {\n width,\n height,\n left: 0,\n top: 0,\n };\n } else {\n elementRect = {\n width: element.offsetWidth,\n height: element.offsetHeight,\n left: element.offsetLeft,\n top: element.offsetTop,\n };\n }\n\n // position\n return getClientRect(elementRect);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n const window = element.ownerDocument.defaultView;\n const styles = window.getComputedStyle(element);\n const x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);\n const y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);\n const result = {\n width: element.offsetWidth + y,\n height: element.offsetHeight + x,\n };\n return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n placement = placement.split('-')[0];\n\n // Get popper node sizes\n const popperRect = getOuterSizes(popper);\n\n // Add position, width and height to our offsets object\n const popperOffsets = {\n width: popperRect.width,\n height: popperRect.height,\n };\n\n // depending by the popper placement we have to compute its offsets slightly differently\n const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n const mainSide = isHoriz ? 'top' : 'left';\n const secondarySide = isHoriz ? 'left' : 'top';\n const measurement = isHoriz ? 'height' : 'width';\n const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n popperOffsets[mainSide] =\n referenceOffsets[mainSide] +\n referenceOffsets[measurement] / 2 -\n popperRect[measurement] / 2;\n if (placement === secondarySide) {\n popperOffsets[secondarySide] =\n referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n } else {\n popperOffsets[secondarySide] =\n referenceOffsets[getOppositePlacement(secondarySide)];\n }\n\n return popperOffsets;\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getFixedPositionOffsetParent from './getFixedPositionOffsetParent';\nimport getReferenceNode from './getReferenceNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @param {Element} fixedPosition - is in fixed position mode\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference, fixedPosition = null) {\n const commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n for (let i = 0; i < prefixes.length; i++) {\n const prefix = prefixes[i];\n const toCheck = prefix ? `${prefix}${upperProp}` : property;\n if (typeof document.body.style[toCheck] !== 'undefined') {\n return toCheck;\n }\n }\n return null;\n}\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n const getType = {};\n return (\n functionToCheck &&\n getType.toString.call(functionToCheck) === '[object Function]'\n );\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n return modifiers.some(\n ({ name, enabled }) => enabled && name === modifierName\n );\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.
\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n modifiers,\n requestingName,\n requestedName\n) {\n const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n const isRequired =\n !!requesting &&\n modifiers.some(modifier => {\n return (\n modifier.name === requestedName &&\n modifier.enabled &&\n modifier.order < requesting.order\n );\n });\n\n if (!isRequired) {\n const requesting = `\\`${requestingName}\\``;\n const requested = `\\`${requestedName}\\``;\n console.warn(\n `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n );\n }\n return isRequired;\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n const ownerDocument = element.ownerDocument;\n return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n // Remove resize event listener on window\n getWindow(reference).removeEventListener('resize', state.updateBound);\n\n // Remove scroll event listener on scroll parents\n state.scrollParents.forEach(target => {\n target.removeEventListener('scroll', state.updateBound);\n });\n\n // Reset state\n state.updateBound = null;\n state.scrollParents = [];\n state.scrollElement = null;\n state.eventsEnabled = false;\n return state;\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n const modifiersToRun = ends === undefined\n ? modifiers\n : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n modifiersToRun.forEach(modifier => {\n if (modifier['function']) { // eslint-disable-line dot-notation\n console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n }\n const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n if (modifier.enabled && isFunction(fn)) {\n // Add properties to offsets to make them a complete clientRect object\n // we do this before each modifier to make sure the previous one doesn't\n // mess with these values\n data.offsets.popper = getClientRect(data.offsets.popper);\n data.offsets.reference = getClientRect(data.offsets.reference);\n\n data = fn(data, modifier);\n }\n });\n\n return data;\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n Object.keys(attributes).forEach(function(prop) {\n const value = attributes[prop];\n if (value !== false) {\n element.setAttribute(prop, attributes[prop]);\n } else {\n element.removeAttribute(prop);\n }\n });\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n Object.keys(styles).forEach(prop => {\n let unit = '';\n // add unit if the value is numeric and is one of the following\n if (\n ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n -1 &&\n isNumeric(styles[prop])\n ) {\n unit = 'px';\n }\n element.style[prop] = styles[prop] + unit;\n });\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n const isBody = scrollParent.nodeName === 'BODY';\n const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n target.addEventListener(event, callback, { passive: true });\n\n if (!isBody) {\n attachToScrollParents(\n getScrollParent(target.parentNode),\n event,\n callback,\n scrollParents\n );\n }\n scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n reference,\n options,\n state,\n updateBound\n) {\n // Resize event listener on window\n state.updateBound = updateBound;\n getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n // Scroll event listener on scroll parents\n const scrollElement = getScrollParent(reference);\n attachToScrollParents(\n scrollElement,\n 'scroll',\n state.updateBound,\n state.scrollParents\n );\n state.scrollElement = scrollElement;\n state.eventsEnabled = true;\n\n return state;\n}\n","import computeAutoPlacement from './computeAutoPlacement';\nimport debounce from './debounce';\nimport findIndex from './findIndex';\nimport getBordersSize from './getBordersSize';\nimport getBoundaries from './getBoundaries';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getClientRect from './getClientRect';\nimport getOffsetParent from './getOffsetParent';\nimport getOffsetRect from './getOffsetRect';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getOuterSizes from './getOuterSizes';\nimport getParentNode from './getParentNode';\nimport getPopperOffsets from './getPopperOffsets';\nimport getReferenceOffsets from './getReferenceOffsets';\nimport getScroll from './getScroll';\nimport getScrollParent from './getScrollParent';\nimport getStyleComputedProperty from './getStyleComputedProperty';\nimport getSupportedPropertyName from './getSupportedPropertyName';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport isFunction from './isFunction';\nimport isModifierEnabled from './isModifierEnabled';\nimport isModifierRequired from './isModifierRequired';\nimport isNumeric from './isNumeric';\nimport removeEventListeners from './removeEventListeners';\nimport runModifiers from './runModifiers';\nimport setAttributes from './setAttributes';\nimport setStyles from './setStyles';\nimport setupEventListeners from './setupEventListeners';\n\n/** @namespace Popper.Utils */\nexport {\n computeAutoPlacement,\n debounce,\n findIndex,\n getBordersSize,\n getBoundaries,\n getBoundingClientRect,\n getClientRect,\n getOffsetParent,\n getOffsetRect,\n getOffsetRectRelativeToArbitraryNode,\n getOuterSizes,\n getParentNode,\n getPopperOffsets,\n getReferenceOffsets,\n getScroll,\n getScrollParent,\n getStyleComputedProperty,\n getSupportedPropertyName,\n getWindowSizes,\n isFixed,\n isFunction,\n isModifierEnabled,\n isModifierRequired,\n isNumeric,\n removeEventListeners,\n runModifiers,\n setAttributes,\n setStyles,\n setupEventListeners,\n};\n\n// This is here just for backward compatibility with versions lower than v1.10.3\n// you should import the utilities using named exports, if you want them all use:\n// ```\n// import * as PopperUtils from 'popper-utils';\n// ```\n// The default export will be removed in the next major version.\nexport default {\n computeAutoPlacement,\n debounce,\n findIndex,\n getBordersSize,\n getBoundaries,\n getBoundingClientRect,\n getClientRect,\n getOffsetParent,\n getOffsetRect,\n getOffsetRectRelativeToArbitraryNode,\n getOuterSizes,\n getParentNode,\n getPopperOffsets,\n getReferenceOffsets,\n getScroll,\n getScrollParent,\n getStyleComputedProperty,\n getSupportedPropertyName,\n getWindowSizes,\n isFixed,\n isFunction,\n isModifierEnabled,\n isModifierRequired,\n isNumeric,\n removeEventListeners,\n runModifiers,\n setAttributes,\n setStyles,\n 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popper.jsnu[/**! * @fileOverview Kickass library to create and place poppers near their reference elements. * @version 1.16.1 * @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. */ var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined'; const timeoutDuration = function () { const longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox']; for (let i = 0; i < longerTimeoutBrowsers.length; i += 1) { if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) { return 1; } } return 0; }(); function microtaskDebounce(fn) { let called = false; return () => { if (called) { return; } called = true; window.Promise.resolve().then(() => { called = false; fn(); }); }; } function taskDebounce(fn) { let scheduled = false; return () => { if (!scheduled) { scheduled = true; setTimeout(() => { scheduled = false; fn(); }, timeoutDuration); } }; } const 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) { const 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 const window = element.ownerDocument.defaultView; const 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 const { overflow, overflowX, overflowY } = getStyleComputedProperty(element); 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; } const isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode); const 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; } const noOffsetParent = isIE(10) ? document.body : null; // NOTE: 1 DOM access here let offsetParent = element.offsetParent || null; // Skip hidden elements which don't have an offsetParent while (offsetParent === noOffsetParent && element.nextElementSibling) { offsetParent = (element = element.nextElementSibling).offsetParent; } const 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) { const { nodeName } = element; 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 const order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING; const start = order ? element1 : element2; const end = order ? element2 : element1; // Get common ancestor container const range = document.createRange(); range.setStart(start, 0); range.setEnd(end, 0); const { commonAncestorContainer } = range; // 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 const 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, side = 'top') { const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft'; const nodeName = element.nodeName; if (nodeName === 'BODY' || nodeName === 'HTML') { const html = element.ownerDocument.documentElement; const 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, subtract = false) { const scrollTop = getScroll(element, 'top'); const scrollLeft = getScroll(element, 'left'); const 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) { const sideA = axis === 'x' ? 'Left' : 'Top'; const sideB = sideA === 'Left' ? 'Right' : 'Bottom'; return parseFloat(styles[`border${sideA}Width`]) + parseFloat(styles[`border${sideB}Width`]); } function getSize(axis, body, html, computedStyle) { return Math.max(body[`offset${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) { const body = document.body; const html = document.documentElement; const computedStyle = isIE(10) && getComputedStyle(html); return { height: getSize('Height', body, html, computedStyle), width: getSize('Width', body, html, computedStyle) }; } 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) { let 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(); const scrollTop = getScroll(element, 'top'); const scrollLeft = getScroll(element, 'left'); rect.top += scrollTop; rect.left += scrollLeft; rect.bottom += scrollTop; rect.right += scrollLeft; } else { rect = element.getBoundingClientRect(); } } catch (e) {} const result = { left: rect.left, top: rect.top, width: rect.right - rect.left, height: rect.bottom - rect.top }; // subtract scrollbar size from sizes const sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {}; const width = sizes.width || element.clientWidth || result.width; const height = sizes.height || element.clientHeight || result.height; let horizScrollbar = element.offsetWidth - width; let 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) { const styles = getStyleComputedProperty(element); horizScrollbar -= getBordersSize(styles, 'x'); vertScrollbar -= getBordersSize(styles, 'y'); result.width -= horizScrollbar; result.height -= vertScrollbar; } return getClientRect(result); } function getOffsetRectRelativeToArbitraryNode(children, parent, fixedPosition = false) { const isIE10 = isIE(10); const isHTML = parent.nodeName === 'HTML'; const childrenRect = getBoundingClientRect(children); const parentRect = getBoundingClientRect(parent); const scrollParent = getScrollParent(children); const styles = getStyleComputedProperty(parent); const borderTopWidth = parseFloat(styles.borderTopWidth); const borderLeftWidth = parseFloat(styles.borderLeftWidth); // 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); } let 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) { const marginTop = parseFloat(styles.marginTop); const marginLeft = parseFloat(styles.marginLeft); 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, excludeScroll = false) { const html = element.ownerDocument.documentElement; const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html); const width = Math.max(html.clientWidth, window.innerWidth || 0); const height = Math.max(html.clientHeight, window.innerHeight || 0); const scrollTop = !excludeScroll ? getScroll(html) : 0; const scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0; const offset = { top: scrollTop - relativeOffset.top + relativeOffset.marginTop, left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft, width, 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) { const nodeName = element.nodeName; if (nodeName === 'BODY' || nodeName === 'HTML') { return false; } if (getStyleComputedProperty(element, 'position') === 'fixed') { return true; } const 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; } let 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, fixedPosition = false) { // NOTE: 1 DOM access here let boundaries = { top: 0, left: 0 }; const 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 let boundariesNode; 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; } const offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent, fixedPosition); // In case of HTML, we need a different computation if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) { const { height, width } = getWindowSizes(popper.ownerDocument); 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; const 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({ width, 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, padding = 0) { if (placement.indexOf('auto') === -1) { return placement; } const boundaries = getBoundaries(popper, reference, padding, boundariesElement); const 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 } }; const sortedAreas = Object.keys(rects).map(key => _extends({ key }, rects[key], { area: getArea(rects[key]) })).sort((a, b) => b.area - a.area); const filteredAreas = sortedAreas.filter(({ width, height }) => width >= popper.clientWidth && height >= popper.clientHeight); const computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key; const 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, fixedPosition = null) { const 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) { const window = element.ownerDocument.defaultView; const styles = window.getComputedStyle(element); const x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0); const y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0); const 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) { const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' }; return placement.replace(/left|right|bottom|top/g, matched => 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 const popperRect = getOuterSizes(popper); // Add position, width and height to our offsets object const popperOffsets = { width: popperRect.width, height: popperRect.height }; // depending by the popper placement we have to compute its offsets slightly differently const isHoriz = ['right', 'left'].indexOf(placement) !== -1; const mainSide = isHoriz ? 'top' : 'left'; const secondarySide = isHoriz ? 'left' : 'top'; const measurement = isHoriz ? 'height' : 'width'; const 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(cur => cur[prop] === value); } // use `find` + `indexOf` if `findIndex` isn't supported const match = find(arr, obj => 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) { const modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends)); modifiersToRun.forEach(modifier => { if (modifier['function']) { // eslint-disable-line dot-notation console.warn('`modifier.function` is deprecated, use `modifier.fn`!'); } const 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.
* 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; } let 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(({ name, enabled }) => 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) { const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O']; const upperProp = property.charAt(0).toUpperCase() + property.slice(1); for (let i = 0; i < prefixes.length; i++) { const prefix = prefixes[i]; const 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) { const ownerDocument = element.ownerDocument; return ownerDocument ? ownerDocument.defaultView : window; } function attachToScrollParents(scrollParent, event, callback, scrollParents) { const isBody = scrollParent.nodeName === 'BODY'; const 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 const 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(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(prop => { let 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) { const 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 const 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 const 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) { const { popper, reference } = data.offsets; const { round, floor } = Math; const noRound = v => v; const referenceWidth = round(reference.width); const popperWidth = round(popper.width); const isVertical = ['left', 'right'].indexOf(data.placement) !== -1; const isVariation = data.placement.indexOf('-') !== -1; const sameWidthParity = referenceWidth % 2 === popperWidth % 2; const bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1; const horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthParity ? round : floor; const 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) }; } const 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) { const { x, y } = options; const { popper } = data.offsets; // Remove this legacy support in Popper.js v2 const legacyGpuAccelerationOption = find(data.instance.modifiers, modifier => 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!'); } const gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration; const offsetParent = getOffsetParent(data.instance.popper); const offsetParentRect = getBoundingClientRect(offsetParent); // Styles const styles = { position: popper.position }; const offsets = getRoundedOffsets(data, window.devicePixelRatio < 2 || !isFirefox); const sideA = x === 'bottom' ? 'top' : 'bottom'; const 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 const 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. let left, top; if (sideA === 'bottom') { // when offsetParent is 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, ${top}px, 0)`; styles[sideA] = 0; styles[sideB] = 0; styles.willChange = 'transform'; } else { // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties const invertTop = sideA === 'bottom' ? -1 : 1; const invertLeft = sideB === 'right' ? -1 : 1; styles[sideA] = top * invertTop; styles[sideB] = left * invertLeft; styles.willChange = `${sideA}, ${sideB}`; } // Attributes const attributes = { 'x-placement': data.placement }; // Update `data` attributes, styles and arrowStyles data.attributes = _extends({}, attributes, data.attributes); data.styles = _extends({}, styles, data.styles); data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles); return data; } /** * Helper used to know if the given modifier depends from another one.
* It checks if the needed modifier is listed and enabled. * @method * @memberof Popper.Utils * @param {Array} modifiers - list of modifiers * @param {String} requestingName - name of requesting modifier * @param {String} requestedName - name of requested modifier * @returns {Boolean} */ function isModifierRequired(modifiers, requestingName, requestedName) { const requesting = find(modifiers, ({ name }) => name === requestingName); const isRequired = !!requesting && modifiers.some(modifier => { return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order; }); if (!isRequired) { const requesting = `\`${requestingName}\``; const 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) { // arrow depends on keepTogether in order to work if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) { return data; } let 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; } } const placement = data.placement.split('-')[0]; const { popper, reference } = data.offsets; const isVertical = ['left', 'right'].indexOf(placement) !== -1; const len = isVertical ? 'height' : 'width'; const sideCapitalized = isVertical ? 'Top' : 'Left'; const side = sideCapitalized.toLowerCase(); const altSide = isVertical ? 'left' : 'top'; const opSide = isVertical ? 'bottom' : 'right'; const 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 const 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 const css = getStyleComputedProperty(data.instance.popper); const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`]); const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`]); let 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 = { [side]: Math.round(sideValue), [altSide]: '' // make sure to unset any eventual altSide value from the DOM node }; 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.
* 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.
* 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` const 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, counter = false) { const index = validPlacements.indexOf(placement); const arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index)); return counter ? arr.reverse() : arr; } const 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; } const boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement, data.positionFixed); let placement = data.placement.split('-')[0]; let placementOpposite = getOppositePlacement(placement); let variation = data.placement.split('-')[1] || ''; let 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((step, index) => { if (placement !== step || flipOrder.length === index + 1) { return data; } placement = data.placement.split('-')[0]; placementOpposite = getOppositePlacement(placement); const popperOffsets = data.offsets.popper; const refOffsets = data.offsets.reference; // using floor because the reference offsets may contain decimals we are not going to consider here const floor = Math.floor; const 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); const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left); const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right); const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top); const overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom); const overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom; // flip the variation if required const isVertical = ['top', 'bottom'].indexOf(placement) !== -1; // flips variation if reference element overflows boundaries const 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 const flippedVariationByContent = !!options.flipVariationsByContent && (isVertical && variation === 'start' && overflowsRight || isVertical && variation === 'end' && overflowsLeft || !isVertical && variation === 'start' && overflowsBottom || !isVertical && variation === 'end' && overflowsTop); const 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) { const { popper, reference } = data.offsets; const placement = data.placement.split('-')[0]; const floor = Math.floor; const isVertical = ['top', 'bottom'].indexOf(placement) !== -1; const side = isVertical ? 'right' : 'bottom'; const opSide = isVertical ? 'left' : 'top'; const 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 const split = str.match(/((?:\-|\+)?\d*\.?\d*)(.*)/); const value = +split[1]; const unit = split[2]; // If it's not a number it's an operator, I guess if (!value) { return str; } if (unit.indexOf('%') === 0) { let element; switch (unit) { case '%p': element = popperOffsets; break; case '%': case '%r': default: element = referenceOffsets; } const 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 let size; 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) { const 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 const 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) const fragments = offset.split(/(\+|\-)/).map(frag => frag.trim()); // Detect if the offset string contains a pair of values or a single one // they could be separated by comma or space const divider = fragments.indexOf(find(fragments, frag => 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. const splitRegex = /\s*,\s*|\s+/; let 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((op, index) => { // Most of the units rely on the orientation of the popper const measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width'; let mergeWithPrevious = false; return op // This aggregates any `+` or `-` sign that aren't considered operators // e.g.: 10 + +5 => [10, +, +5] .reduce((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(str => toValue(str, measurement, popperOffsets, referenceOffsets)); }); // Loop trough the offsets arrays and execute the operations ops.forEach((op, index) => { op.forEach((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, { offset }) { const { placement, offsets: { popper, reference } } = data; const basePlacement = placement.split('-')[0]; let offsets; 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) { let 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 const transformProp = getSupportedPropertyName('transform'); const popperStyles = data.instance.popper.style; // assignment to help minification const { top, left, [transformProp]: transform } = popperStyles; popperStyles.top = ''; popperStyles.left = ''; popperStyles[transformProp] = ''; const 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; const order = options.priority; let popper = data.offsets.popper; const check = { primary(placement) { let value = popper[placement]; if (popper[placement] < boundaries[placement] && !options.escapeWithReference) { value = Math.max(popper[placement], boundaries[placement]); } return { [placement]: value }; }, secondary(placement) { const mainSide = placement === 'right' ? 'left' : 'top'; let value = popper[mainSide]; if (popper[placement] > boundaries[placement] && !options.escapeWithReference) { value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height)); } return { [mainSide]: value }; } }; order.forEach(placement => { const 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) { const placement = data.placement; const basePlacement = placement.split('-')[0]; const shiftvariation = placement.split('-')[1]; // if shift shiftvariation is specified, run the modifier if (shiftvariation) { const { reference, popper } = data.offsets; const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1; const side = isVertical ? 'left' : 'top'; const measurement = isVertical ? 'width' : 'height'; const shiftOffsets = { start: { [side]: reference[side] }, end: { [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; } const refRect = data.offsets.reference; const bound = find(data.instance.modifiers, modifier => 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) { const placement = data.placement; const basePlacement = placement.split('-')[0]; const { popper, reference } = data.offsets; const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1; const 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.
* 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.
* 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.
* It will read the variation of the `placement` property.
* 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.
* 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.
* The latter is a deprecated method because it leads to confusion and will be * removed in v2.
* 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.
* We can say it has "escaped the boundaries" — or just "escaped".
* 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.
* These can be overridden using the `options` argument of Popper.js.
* 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.
* By default, it is set to no-op.
* Access Popper.js instance with `data.instance`. * @prop {onCreate} */ 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.
* By default, it is set to no-op.
* Access Popper.js instance with `data.instance`. * @prop {onUpdate} */ 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 }; /** * @callback onCreate * @param {dataObject} data */ /** * @callback onUpdate * @param {dataObject} data */ // Utils // Methods class Popper { /** * 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 */ constructor(reference, popper, options = {}) { this.scheduleUpdate = () => 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(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(name => _extends({ name }, this.options.modifiers[name])) // sort the modifiers by order .sort((a, b) => 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(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(); const 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 update() { return update.call(this); } destroy() { return destroy.call(this); } enableEventListeners() { return enableEventListeners.call(this); } disableEventListeners() { 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 */ } /** * 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.
* 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; export default Popper; //# sourceMappingURL=popper.js.map PK!h|''popper-utils.min.jsnu[/* Copyright (C) Federico Zivolo 2020 Distributed under the MIT License (license terms are at http://opensource.org/licenses/MIT). */function a(a,b){if(1!==a.nodeType)return[];const c=a.ownerDocument.defaultView,d=c.getComputedStyle(a,null);return b?d[b]:d}function b(a){return'HTML'===a.nodeName?a:a.parentNode||a.host}function c(d){if(!d)return document.body;switch(d.nodeName){case'HTML':case'BODY':return d.ownerDocument.body;case'#document':return d.body;}const{overflow:e,overflowX:f,overflowY:g}=a(d);return /(auto|scroll|overlay)/.test(e+g+f)?d:c(b(d))}function d(a){return a&&a.referenceNode?a.referenceNode:a}var e='undefined'!=typeof window&&'undefined'!=typeof document&&'undefined'!=typeof navigator;const f=e&&!!(window.MSInputMethodContext&&document.documentMode),g=e&&/MSIE 10/.test(navigator.userAgent);function h(a){return 11===a?f:10===a?g:f||g}function i(b){if(!b)return document.documentElement;const c=h(10)?document.body:null;let d=b.offsetParent||null;for(;d===c&&b.nextElementSibling;)d=(b=b.nextElementSibling).offsetParent;const e=d&&d.nodeName;return e&&'BODY'!==e&&'HTML'!==e?-1!==['TH','TD','TABLE'].indexOf(d.nodeName)&&'static'===a(d,'position')?i(d):d:b?b.ownerDocument.documentElement:document.documentElement}function j(a){const{nodeName:b}=a;return'BODY'!==b&&('HTML'===b||i(a.firstElementChild)===a)}function k(a){return null===a.parentNode?a:k(a.parentNode)}function l(a,b){if(!a||!a.nodeType||!b||!b.nodeType)return document.documentElement;const c=a.compareDocumentPosition(b)&Node.DOCUMENT_POSITION_FOLLOWING,d=c?a:b,e=c?b:a,f=document.createRange();f.setStart(d,0),f.setEnd(e,0);const{commonAncestorContainer:g}=f;if(a!==g&&b!==g||d.contains(e))return j(g)?g:i(g);const h=k(a);return h.host?l(h.host,b):l(a,k(b).host)}function m(a,b='top'){const c='top'===b?'scrollTop':'scrollLeft',d=a.nodeName;if('BODY'===d||'HTML'===d){const b=a.ownerDocument.documentElement,d=a.ownerDocument.scrollingElement||b;return d[c]}return a[c]}function n(a,b,c=!1){const d=m(b,'top'),e=m(b,'left'),f=c?-1:1;return a.top+=d*f,a.bottom+=d*f,a.left+=e*f,a.right+=e*f,a}function o(a,b){const c='x'===b?'Left':'Top',d='Left'==c?'Right':'Bottom';return parseFloat(a[`border${c}Width`])+parseFloat(a[`border${d}Width`])}function p(a,b,c,d){return Math.max(b[`offset${a}`],b[`scroll${a}`],c[`client${a}`],c[`offset${a}`],c[`scroll${a}`],h(10)?parseInt(c[`offset${a}`])+parseInt(d[`margin${'Height'===a?'Top':'Left'}`])+parseInt(d[`margin${'Height'===a?'Bottom':'Right'}`]):0)}function q(a){const b=a.body,c=a.documentElement,d=h(10)&&getComputedStyle(c);return{height:p('Height',b,c,d),width:p('Width',b,c,d)}}var r=Object.assign||function(a){for(var b,c=1;cr({key:a},h[a],{area:z(h[a])})).sort((c,a)=>a.area-c.area),j=i.filter(({width:a,height:b})=>a>=c.clientWidth&&b>=c.clientHeight),k=0{b||(b=!0,window.Promise.resolve().then(()=>{b=!1,a()}))}}function D(a){let b=!1;return()=>{b||(b=!0,setTimeout(()=>{b=!1,a()},B))}}const E=e&&window.Promise;var F=E?C:D;function G(a,b){return Array.prototype.find?a.find(b):a.filter(b)[0]}function H(a,b,c){if(Array.prototype.findIndex)return a.findIndex((a)=>a[b]===c);const d=G(a,(a)=>a[b]===c);return a.indexOf(d)}function I(a){let b;if('HTML'===a.nodeName){const{width:c,height:d}=q(a.ownerDocument);b={width:c,height:d,left:0,top:0}}else b={width:a.offsetWidth,height:a.offsetHeight,left:a.offsetLeft,top:a.offsetTop};return s(b)}function J(a){const b=a.ownerDocument.defaultView,c=b.getComputedStyle(a),d=parseFloat(c.marginTop||0)+parseFloat(c.marginBottom||0),e=parseFloat(c.marginLeft||0)+parseFloat(c.marginRight||0),f={width:a.offsetWidth+e,height:a.offsetHeight+d};return f}function K(a){const b={left:'right',right:'left',bottom:'top',top:'bottom'};return a.replace(/left|right|bottom|top/g,(a)=>b[a])}function L(a,b,c){c=c.split('-')[0];const d=J(a),e={width:d.width,height:d.height},f=-1!==['right','left'].indexOf(c),g=f?'top':'left',h=f?'left':'top',i=f?'height':'width',j=f?'width':'height';return e[g]=b[g]+b[i]/2-d[i]/2,e[h]=c===h?b[h]-d[j]:b[K(h)],e}function M(a,b,c,e=null){const f=e?x(b):l(b,d(c));return u(c,f,e)}function N(a){const b=[!1,'ms','Webkit','Moz','O'],c=a.charAt(0).toUpperCase()+a.slice(1);for(let d=0;dc&&a===b)}function Q(a,b,c){const d=G(a,({name:a})=>a===b),e=!!d&&a.some((a)=>a.name===c&&a.enabled&&a.order{a.removeEventListener('scroll',b.updateBound)}),b.updateBound=null,b.scrollParents=[],b.scrollElement=null,b.eventsEnabled=!1,b}function U(a,b,c){const d=void 0===c?a:a.slice(0,H(a,'name',c));return d.forEach((a)=>{a['function']&&console.warn('`modifier.function` is deprecated, use `modifier.fn`!');const c=a['function']||a.fn;a.enabled&&O(c)&&(b.offsets.popper=s(b.offsets.popper),b.offsets.reference=s(b.offsets.reference),b=c(b,a))}),b}function V(a,b){Object.keys(b).forEach(function(c){const d=b[c];!1===d?a.removeAttribute(c):a.setAttribute(c,b[c])})}function W(a,b){Object.keys(b).forEach((c)=>{let d='';-1!==['width','height','top','right','bottom','left'].indexOf(c)&&R(b[c])&&(d='px'),a.style[c]=b[c]+d})}function X(a,b,d,e){const f='BODY'===a.nodeName,g=f?a.ownerDocument.defaultView:a;g.addEventListener(b,d,{passive:!0}),f||X(c(g.parentNode),b,d,e),e.push(g)}function Y(a,b,d,e){d.updateBound=e,S(a).addEventListener('resize',d.updateBound,{passive:!0});const f=c(a);return X(f,'scroll',d.updateBound,d.scrollParents),d.scrollElement=f,d.eventsEnabled=!0,d}var Z={computeAutoPlacement:A,debounce:F,findIndex:H,getBordersSize:o,getBoundaries:y,getBoundingClientRect:t,getClientRect:s,getOffsetParent:i,getOffsetRect:I,getOffsetRectRelativeToArbitraryNode:u,getOuterSizes:J,getParentNode:b,getPopperOffsets:L,getReferenceOffsets:M,getScroll:m,getScrollParent:c,getStyleComputedProperty:a,getSupportedPropertyName:N,getWindowSizes:q,isFixed:w,isFunction:O,isModifierEnabled:P,isModifierRequired:Q,isNumeric:R,removeEventListeners:T,runModifiers:U,setAttributes:V,setStyles:W,setupEventListeners:Y};export{A as computeAutoPlacement,F as debounce,H as findIndex,o as getBordersSize,y as getBoundaries,t as getBoundingClientRect,s as getClientRect,i as getOffsetParent,I as getOffsetRect,u as getOffsetRectRelativeToArbitraryNode,J as getOuterSizes,b as getParentNode,L as getPopperOffsets,M as getReferenceOffsets,m as getScroll,c as getScrollParent,a as getStyleComputedProperty,N as getSupportedPropertyName,q as getWindowSizes,w as isFixed,O as isFunction,P as isModifierEnabled,Q as isModifierRequired,R as isNumeric,T as removeEventListeners,U as runModifiers,V as setAttributes,W as setStyles,Y as setupEventListeners};export default Z; //# sourceMappingURL=popper-utils.min.js.map PK!:Qffpopper-utils.jsnu[/**! * @fileOverview Kickass library to create and place poppers near their reference elements. * @version 1.16.1 * @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. */ /** * 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 const window = element.ownerDocument.defaultView; const 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 const { overflow, overflowX, overflowY } = getStyleComputedProperty(element); 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 isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined'; const isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode); const 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; } const noOffsetParent = isIE(10) ? document.body : null; // NOTE: 1 DOM access here let offsetParent = element.offsetParent || null; // Skip hidden elements which don't have an offsetParent while (offsetParent === noOffsetParent && element.nextElementSibling) { offsetParent = (element = element.nextElementSibling).offsetParent; } const 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) { const { nodeName } = element; 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 const order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING; const start = order ? element1 : element2; const end = order ? element2 : element1; // Get common ancestor container const range = document.createRange(); range.setStart(start, 0); range.setEnd(end, 0); const { commonAncestorContainer } = range; // 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 const 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, side = 'top') { const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft'; const nodeName = element.nodeName; if (nodeName === 'BODY' || nodeName === 'HTML') { const html = element.ownerDocument.documentElement; const 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, subtract = false) { const scrollTop = getScroll(element, 'top'); const scrollLeft = getScroll(element, 'left'); const 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) { const sideA = axis === 'x' ? 'Left' : 'Top'; const sideB = sideA === 'Left' ? 'Right' : 'Bottom'; return parseFloat(styles[`border${sideA}Width`]) + parseFloat(styles[`border${sideB}Width`]); } function getSize(axis, body, html, computedStyle) { return Math.max(body[`offset${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) { const body = document.body; const html = document.documentElement; const computedStyle = isIE(10) && getComputedStyle(html); return { height: getSize('Height', body, html, computedStyle), width: getSize('Width', body, html, computedStyle) }; } 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) { let 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(); const scrollTop = getScroll(element, 'top'); const scrollLeft = getScroll(element, 'left'); rect.top += scrollTop; rect.left += scrollLeft; rect.bottom += scrollTop; rect.right += scrollLeft; } else { rect = element.getBoundingClientRect(); } } catch (e) {} const result = { left: rect.left, top: rect.top, width: rect.right - rect.left, height: rect.bottom - rect.top }; // subtract scrollbar size from sizes const sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {}; const width = sizes.width || element.clientWidth || result.width; const height = sizes.height || element.clientHeight || result.height; let horizScrollbar = element.offsetWidth - width; let 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) { const styles = getStyleComputedProperty(element); horizScrollbar -= getBordersSize(styles, 'x'); vertScrollbar -= getBordersSize(styles, 'y'); result.width -= horizScrollbar; result.height -= vertScrollbar; } return getClientRect(result); } function getOffsetRectRelativeToArbitraryNode(children, parent, fixedPosition = false) { const isIE10 = isIE(10); const isHTML = parent.nodeName === 'HTML'; const childrenRect = getBoundingClientRect(children); const parentRect = getBoundingClientRect(parent); const scrollParent = getScrollParent(children); const styles = getStyleComputedProperty(parent); const borderTopWidth = parseFloat(styles.borderTopWidth); const borderLeftWidth = parseFloat(styles.borderLeftWidth); // 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); } let 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) { const marginTop = parseFloat(styles.marginTop); const marginLeft = parseFloat(styles.marginLeft); 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, excludeScroll = false) { const html = element.ownerDocument.documentElement; const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html); const width = Math.max(html.clientWidth, window.innerWidth || 0); const height = Math.max(html.clientHeight, window.innerHeight || 0); const scrollTop = !excludeScroll ? getScroll(html) : 0; const scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0; const offset = { top: scrollTop - relativeOffset.top + relativeOffset.marginTop, left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft, width, 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) { const nodeName = element.nodeName; if (nodeName === 'BODY' || nodeName === 'HTML') { return false; } if (getStyleComputedProperty(element, 'position') === 'fixed') { return true; } const 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; } let 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, fixedPosition = false) { // NOTE: 1 DOM access here let boundaries = { top: 0, left: 0 }; const 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 let boundariesNode; 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; } const offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent, fixedPosition); // In case of HTML, we need a different computation if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) { const { height, width } = getWindowSizes(popper.ownerDocument); 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; const 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({ width, 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, padding = 0) { if (placement.indexOf('auto') === -1) { return placement; } const boundaries = getBoundaries(popper, reference, padding, boundariesElement); const 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 } }; const sortedAreas = Object.keys(rects).map(key => _extends({ key }, rects[key], { area: getArea(rects[key]) })).sort((a, b) => b.area - a.area); const filteredAreas = sortedAreas.filter(({ width, height }) => width >= popper.clientWidth && height >= popper.clientHeight); const computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key; const variation = placement.split('-')[1]; return computedPlacement + (variation ? `-${variation}` : ''); } const timeoutDuration = function () { const longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox']; for (let i = 0; i < longerTimeoutBrowsers.length; i += 1) { if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) { return 1; } } return 0; }(); function microtaskDebounce(fn) { let called = false; return () => { if (called) { return; } called = true; window.Promise.resolve().then(() => { called = false; fn(); }); }; } function taskDebounce(fn) { let scheduled = false; return () => { if (!scheduled) { scheduled = true; setTimeout(() => { scheduled = false; fn(); }, timeoutDuration); } }; } const 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; /** * 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(cur => cur[prop] === value); } // use `find` + `indexOf` if `findIndex` isn't supported const match = find(arr, obj => obj[prop] === value); return arr.indexOf(match); } /** * Get the position of the given element, relative to its offset parent * @method * @memberof Popper.Utils * @param {Element} element * @return {Object} position - Coordinates of the element and its `scrollTop` */ function getOffsetRect(element) { let elementRect; if (element.nodeName === 'HTML') { const { width, height } = getWindowSizes(element.ownerDocument); elementRect = { width, height, left: 0, top: 0 }; } else { elementRect = { width: element.offsetWidth, height: element.offsetHeight, left: element.offsetLeft, top: element.offsetTop }; } // position return getClientRect(elementRect); } /** * 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) { const window = element.ownerDocument.defaultView; const styles = window.getComputedStyle(element); const x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0); const y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0); const 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) { const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' }; return placement.replace(/left|right|bottom|top/g, matched => 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 const popperRect = getOuterSizes(popper); // Add position, width and height to our offsets object const popperOffsets = { width: popperRect.width, height: popperRect.height }; // depending by the popper placement we have to compute its offsets slightly differently const isHoriz = ['right', 'left'].indexOf(placement) !== -1; const mainSide = isHoriz ? 'top' : 'left'; const secondarySide = isHoriz ? 'left' : 'top'; const measurement = isHoriz ? 'height' : 'width'; const 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; } /** * 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, fixedPosition = null) { const commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference)); return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition); } /** * 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) { const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O']; const upperProp = property.charAt(0).toUpperCase() + property.slice(1); for (let i = 0; i < prefixes.length; i++) { const prefix = prefixes[i]; const toCheck = prefix ? `${prefix}${upperProp}` : property; if (typeof document.body.style[toCheck] !== 'undefined') { return toCheck; } } return null; } /** * 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) { const getType = {}; return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]'; } /** * Helper used to know if the given modifier is enabled. * @method * @memberof Popper.Utils * @returns {Boolean} */ function isModifierEnabled(modifiers, modifierName) { return modifiers.some(({ name, enabled }) => enabled && name === modifierName); } /** * Helper used to know if the given modifier depends from another one.
* 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) { const requesting = find(modifiers, ({ name }) => name === requestingName); const isRequired = !!requesting && modifiers.some(modifier => { return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order; }); if (!isRequired) { const requesting = `\`${requestingName}\``; const requested = `\`${requestedName}\``; console.warn(`${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`); } return isRequired; } /** * 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); } /** * Get the window associated with the element * @argument {Element} element * @returns {Window} */ function getWindow(element) { const ownerDocument = element.ownerDocument; return ownerDocument ? ownerDocument.defaultView : window; } /** * 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(target => { target.removeEventListener('scroll', state.updateBound); }); // Reset state state.updateBound = null; state.scrollParents = []; state.scrollElement = null; state.eventsEnabled = false; return state; } /** * 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) { const modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends)); modifiersToRun.forEach(modifier => { if (modifier['function']) { // eslint-disable-line dot-notation console.warn('`modifier.function` is deprecated, use `modifier.fn`!'); } const 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; } /** * 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) { const value = attributes[prop]; if (value !== false) { element.setAttribute(prop, attributes[prop]); } else { element.removeAttribute(prop); } }); } /** * 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(prop => { let 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; }); } function attachToScrollParents(scrollParent, event, callback, scrollParents) { const isBody = scrollParent.nodeName === 'BODY'; const 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 const scrollElement = getScrollParent(reference); attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents); state.scrollElement = scrollElement; state.eventsEnabled = true; return state; } // This is here just for backward compatibility with versions lower than v1.10.3 // you should import the utilities using named exports, if you want them all use: // ``` // import * as PopperUtils from 'popper-utils'; // ``` // The default export will be removed in the next major version. var index = { computeAutoPlacement, debounce, findIndex, getBordersSize, getBoundaries, getBoundingClientRect, getClientRect, getOffsetParent, getOffsetRect, getOffsetRectRelativeToArbitraryNode, getOuterSizes, getParentNode, getPopperOffsets, getReferenceOffsets, getScroll, getScrollParent, getStyleComputedProperty, getSupportedPropertyName, getWindowSizes, isFixed, isFunction, isModifierEnabled, isModifierRequired, isNumeric, removeEventListeners, runModifiers, setAttributes, setStyles, setupEventListeners }; export { computeAutoPlacement, debounce, findIndex, getBordersSize, getBoundaries, getBoundingClientRect, getClientRect, getOffsetParent, getOffsetRect, getOffsetRectRelativeToArbitraryNode, getOuterSizes, getParentNode, getPopperOffsets, getReferenceOffsets, getScroll, getScrollParent, getStyleComputedProperty, getSupportedPropertyName, getWindowSizes, isFixed, isFunction, isModifierEnabled, isModifierRequired, isNumeric, removeEventListeners, runModifiers, setAttributes, setStyles, setupEventListeners }; export default index; //# sourceMappingURL=popper-utils.js.map PK!Eumd/popper-utils.min.js.mapnu[{"version":3,"file":"popper-utils.min.js","sources":["../../src/utils/getStyleComputedProperty.js","../../src/utils/getParentNode.js","../../src/utils/getScrollParent.js","../../src/utils/getReferenceNode.js","../../src/utils/isIE.js","../../src/utils/getOffsetParent.js","../../src/utils/isOffsetContainer.js","../../src/utils/getRoot.js","../../src/utils/findCommonOffsetParent.js","../../src/utils/getScroll.js","../../src/utils/includeScroll.js","../../src/utils/getBordersSize.js","../../src/utils/getWindowSizes.js","../../src/utils/getClientRect.js","../../src/utils/getBoundingClientRect.js","../../src/utils/getOffsetRectRelativeToArbitraryNode.js","../../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../../src/utils/isFixed.js","../../src/utils/getFixedPositionOffsetParent.js","../../src/utils/getBoundaries.js","../../src/utils/computeAutoPlacement.js","../../src/utils/find.js","../../src/utils/findIndex.js","../../src/utils/getOffsetRect.js","../../src/utils/getOuterSizes.js","../../src/utils/getOppositePlacement.js","../../src/utils/getPopperOffsets.js","../../src/utils/getReferenceOffsets.js","../../src/utils/getSupportedPropertyName.js","../../src/utils/isFunction.js","../../src/utils/isModifierEnabled.js","../../src/utils/isModifierRequired.js","../../src/utils/isNumeric.js","../../src/utils/getWindow.js","../../src/utils/removeEventListeners.js","../../src/utils/runModifiers.js","../../src/utils/setAttributes.js","../../src/utils/setStyles.js","../../src/utils/setupEventListeners.js","../../src/utils/isBrowser.js","../../src/utils/debounce.js","../../src/utils/index.js"],"sourcesContent":["/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n if (element.nodeType !== 1) {\n return [];\n }\n // NOTE: 1 DOM access here\n const window = element.ownerDocument.defaultView;\n const css = window.getComputedStyle(element, null);\n return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n if (element.nodeName === 'HTML') {\n return element;\n }\n return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n if (!element) {\n return document.body\n }\n\n switch (element.nodeName) {\n case 'HTML':\n case 'BODY':\n return element.ownerDocument.body\n case '#document':\n return element.body\n }\n\n // Firefox want us to check `-x` and `-y` variations as well\n const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {\n return element;\n }\n\n return getScrollParent(getParentNode(element));\n}\n","/**\n * Returns the reference node of the reference object, or the reference object itself.\n * @method\n * @memberof Popper.Utils\n * @param {Element|Object} reference - the reference element (the popper will be relative to this)\n * @returns {Element} parent\n */\nexport default function getReferenceNode(reference) {\n return reference && reference.referenceNode ? reference.referenceNode : reference;\n}\n","import isBrowser from './isBrowser';\n\nconst isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);\nconst isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);\n\n/**\n * Determines if the browser is Internet Explorer\n * @method\n * @memberof Popper.Utils\n * @param {Number} version to check\n * @returns {Boolean} isIE\n */\nexport default function isIE(version) {\n if (version === 11) {\n return isIE11;\n }\n if (version === 10) {\n return isIE10;\n }\n return isIE11 || isIE10;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport isIE from './isIE';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n if (!element) {\n return document.documentElement;\n }\n\n const noOffsetParent = isIE(10) ? document.body : null;\n\n // NOTE: 1 DOM access here\n let offsetParent = element.offsetParent || null;\n // Skip hidden elements which don't have an offsetParent\n while (offsetParent === noOffsetParent && element.nextElementSibling) {\n offsetParent = (element = element.nextElementSibling).offsetParent;\n }\n\n const nodeName = offsetParent && offsetParent.nodeName;\n\n if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n return element ? element.ownerDocument.documentElement : document.documentElement;\n }\n\n // .offsetParent will return the closest TH, TD or TABLE in case\n // no offsetParent is present, I hate this job...\n if (\n ['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n getStyleComputedProperty(offsetParent, 'position') === 'static'\n ) {\n return getOffsetParent(offsetParent);\n }\n\n return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n const { nodeName } = element;\n if (nodeName === 'BODY') {\n return false;\n }\n return (\n nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n if (node.parentNode !== null) {\n return getRoot(node.parentNode);\n }\n\n return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n return document.documentElement;\n }\n\n // Here we make sure to give as \"start\" the element that comes first in the DOM\n const order =\n element1.compareDocumentPosition(element2) &\n Node.DOCUMENT_POSITION_FOLLOWING;\n const start = order ? element1 : element2;\n const end = order ? element2 : element1;\n\n // Get common ancestor container\n const range = document.createRange();\n range.setStart(start, 0);\n range.setEnd(end, 0);\n const { commonAncestorContainer } = range;\n\n // Both nodes are inside #document\n if (\n (element1 !== commonAncestorContainer &&\n element2 !== commonAncestorContainer) ||\n start.contains(end)\n ) {\n if (isOffsetContainer(commonAncestorContainer)) {\n return commonAncestorContainer;\n }\n\n return getOffsetParent(commonAncestorContainer);\n }\n\n // one of the nodes is inside shadowDOM, find which one\n const element1root = getRoot(element1);\n if (element1root.host) {\n return findCommonOffsetParent(element1root.host, element2);\n } else {\n return findCommonOffsetParent(element1, getRoot(element2).host);\n }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n const nodeName = element.nodeName;\n\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n const html = element.ownerDocument.documentElement;\n const scrollingElement = element.ownerDocument.scrollingElement || html;\n return scrollingElement[upperSide];\n }\n\n return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n const scrollTop = getScroll(element, 'top');\n const scrollLeft = getScroll(element, 'left');\n const modifier = subtract ? -1 : 1;\n rect.top += scrollTop * modifier;\n rect.bottom += scrollTop * modifier;\n rect.left += scrollLeft * modifier;\n rect.right += scrollLeft * modifier;\n return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n const sideA = axis === 'x' ? 'Left' : 'Top';\n const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n return (\n parseFloat(styles[`border${sideA}Width`]) +\n parseFloat(styles[`border${sideB}Width`])\n );\n}\n","import isIE from './isIE';\n\nfunction getSize(axis, body, html, computedStyle) {\n return Math.max(\n body[`offset${axis}`],\n body[`scroll${axis}`],\n html[`client${axis}`],\n html[`offset${axis}`],\n html[`scroll${axis}`],\n isIE(10)\n ? (parseInt(html[`offset${axis}`]) + \n parseInt(computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`]) + \n parseInt(computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]))\n : 0 \n );\n}\n\nexport default function getWindowSizes(document) {\n const body = document.body;\n const html = document.documentElement;\n const computedStyle = isIE(10) && getComputedStyle(html);\n\n return {\n height: getSize('Height', body, html, computedStyle),\n width: getSize('Width', body, html, computedStyle),\n };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n return {\n ...offsets,\n right: offsets.left + offsets.width,\n bottom: offsets.top + offsets.height,\n };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE from './isIE';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n let rect = {};\n\n // IE10 10 FIX: Please, don't ask, the element isn't\n // considered in DOM in some circumstances...\n // This isn't reproducible in IE10 compatibility mode of IE11\n try {\n if (isIE(10)) {\n rect = element.getBoundingClientRect();\n const scrollTop = getScroll(element, 'top');\n const scrollLeft = getScroll(element, 'left');\n rect.top += scrollTop;\n rect.left += scrollLeft;\n rect.bottom += scrollTop;\n rect.right += scrollLeft;\n }\n else {\n rect = element.getBoundingClientRect();\n }\n }\n catch(e){}\n\n const result = {\n left: rect.left,\n top: rect.top,\n width: rect.right - rect.left,\n height: rect.bottom - rect.top,\n };\n\n // subtract scrollbar size from sizes\n const sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};\n const width =\n sizes.width || element.clientWidth || result.width;\n const height =\n sizes.height || element.clientHeight || result.height;\n\n let horizScrollbar = element.offsetWidth - width;\n let vertScrollbar = element.offsetHeight - height;\n\n // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n // we make this check conditional for performance reasons\n if (horizScrollbar || vertScrollbar) {\n const styles = getStyleComputedProperty(element);\n horizScrollbar -= getBordersSize(styles, 'x');\n vertScrollbar -= getBordersSize(styles, 'y');\n\n result.width -= horizScrollbar;\n result.height -= vertScrollbar;\n }\n\n return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE from './isIE';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent, fixedPosition = false) {\n const isIE10 = runIsIE(10);\n const isHTML = parent.nodeName === 'HTML';\n const childrenRect = getBoundingClientRect(children);\n const parentRect = getBoundingClientRect(parent);\n const scrollParent = getScrollParent(children);\n\n const styles = getStyleComputedProperty(parent);\n const borderTopWidth = parseFloat(styles.borderTopWidth);\n const borderLeftWidth = parseFloat(styles.borderLeftWidth);\n\n // In cases where the parent is fixed, we must ignore negative scroll in offset calc\n if(fixedPosition && isHTML) {\n parentRect.top = Math.max(parentRect.top, 0);\n parentRect.left = Math.max(parentRect.left, 0);\n }\n let offsets = getClientRect({\n top: childrenRect.top - parentRect.top - borderTopWidth,\n left: childrenRect.left - parentRect.left - borderLeftWidth,\n width: childrenRect.width,\n height: childrenRect.height,\n });\n offsets.marginTop = 0;\n offsets.marginLeft = 0;\n\n // Subtract margins of documentElement in case it's being used as parent\n // we do this only on HTML because it's the only element that behaves\n // differently when margins are applied to it. The margins are included in\n // the box of the documentElement, in the other cases not.\n if (!isIE10 && isHTML) {\n const marginTop = parseFloat(styles.marginTop);\n const marginLeft = parseFloat(styles.marginLeft);\n\n offsets.top -= borderTopWidth - marginTop;\n offsets.bottom -= borderTopWidth - marginTop;\n offsets.left -= borderLeftWidth - marginLeft;\n offsets.right -= borderLeftWidth - marginLeft;\n\n // Attach marginTop and marginLeft because in some circumstances we may need them\n offsets.marginTop = marginTop;\n offsets.marginLeft = marginLeft;\n }\n\n if (\n isIE10 && !fixedPosition\n ? parent.contains(scrollParent)\n : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n ) {\n offsets = includeScroll(offsets, parent);\n }\n\n return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element, excludeScroll = false) {\n const html = element.ownerDocument.documentElement;\n const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n const width = Math.max(html.clientWidth, window.innerWidth || 0);\n const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n const scrollTop = !excludeScroll ? getScroll(html) : 0;\n const scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;\n\n const offset = {\n top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n width,\n height,\n };\n\n return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n const nodeName = element.nodeName;\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n return false;\n }\n if (getStyleComputedProperty(element, 'position') === 'fixed') {\n return true;\n }\n const parentNode = getParentNode(element);\n if (!parentNode) {\n return false;\n }\n return isFixed(parentNode);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport isIE from './isIE';\n/**\n * Finds the first parent of an element that has a transformed property defined\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} first transformed parent or documentElement\n */\n\nexport default function getFixedPositionOffsetParent(element) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element || !element.parentElement || isIE()) {\n return document.documentElement;\n }\n let el = element.parentElement;\n while (el && getStyleComputedProperty(el, 'transform') === 'none') {\n el = el.parentElement;\n }\n return el || document.documentElement;\n\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getReferenceNode from './getReferenceNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport getFixedPositionOffsetParent from './getFixedPositionOffsetParent';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @param {Boolean} fixedPosition - Is in fixed position mode\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n popper,\n reference,\n padding,\n boundariesElement,\n fixedPosition = false\n) {\n // NOTE: 1 DOM access here\n\n let boundaries = { top: 0, left: 0 };\n const offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n\n // Handle viewport case\n if (boundariesElement === 'viewport' ) {\n boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);\n }\n\n else {\n // Handle other cases based on DOM element used as boundaries\n let boundariesNode;\n if (boundariesElement === 'scrollParent') {\n boundariesNode = getScrollParent(getParentNode(reference));\n if (boundariesNode.nodeName === 'BODY') {\n boundariesNode = popper.ownerDocument.documentElement;\n }\n } else if (boundariesElement === 'window') {\n boundariesNode = popper.ownerDocument.documentElement;\n } else {\n boundariesNode = boundariesElement;\n }\n\n const offsets = getOffsetRectRelativeToArbitraryNode(\n boundariesNode,\n offsetParent,\n fixedPosition\n );\n\n // In case of HTML, we need a different computation\n if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n const { height, width } = getWindowSizes(popper.ownerDocument);\n boundaries.top += offsets.top - offsets.marginTop;\n boundaries.bottom = height + offsets.top;\n boundaries.left += offsets.left - offsets.marginLeft;\n boundaries.right = width + offsets.left;\n } else {\n // for all the other DOM elements, this one is good\n boundaries = offsets;\n }\n }\n\n // Add paddings\n padding = padding || 0;\n const isPaddingNumber = typeof padding === 'number';\n boundaries.left += isPaddingNumber ? padding : padding.left || 0; \n boundaries.top += isPaddingNumber ? padding : padding.top || 0; \n boundaries.right -= isPaddingNumber ? padding : padding.right || 0; \n boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0; \n\n return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n placement,\n refRect,\n popper,\n reference,\n boundariesElement,\n padding = 0\n) {\n if (placement.indexOf('auto') === -1) {\n return placement;\n }\n\n const boundaries = getBoundaries(\n popper,\n reference,\n padding,\n boundariesElement\n );\n\n const rects = {\n top: {\n width: boundaries.width,\n height: refRect.top - boundaries.top,\n },\n right: {\n width: boundaries.right - refRect.right,\n height: boundaries.height,\n },\n bottom: {\n width: boundaries.width,\n height: boundaries.bottom - refRect.bottom,\n },\n left: {\n width: refRect.left - boundaries.left,\n height: boundaries.height,\n },\n };\n\n const sortedAreas = Object.keys(rects)\n .map(key => ({\n key,\n ...rects[key],\n area: getArea(rects[key]),\n }))\n .sort((a, b) => b.area - a.area);\n\n const filteredAreas = sortedAreas.filter(\n ({ width, height }) =>\n width >= popper.clientWidth && height >= popper.clientHeight\n );\n\n const computedPlacement = filteredAreas.length > 0\n ? filteredAreas[0].key\n : sortedAreas[0].key;\n\n const variation = placement.split('-')[1];\n\n return computedPlacement + (variation ? `-${variation}` : '');\n}\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n // use native find if supported\n if (Array.prototype.find) {\n return arr.find(check);\n }\n\n // use `filter` to obtain the same behavior of `find`\n return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n // use native findIndex if supported\n if (Array.prototype.findIndex) {\n return arr.findIndex(cur => cur[prop] === value);\n }\n\n // use `find` + `indexOf` if `findIndex` isn't supported\n const match = find(arr, obj => obj[prop] === value);\n return arr.indexOf(match);\n}\n","import getWindowSizes from './getWindowSizes';\nimport getClientRect from './getClientRect';\n\n/**\n * Get the position of the given element, relative to its offset parent\n * @method\n * @memberof Popper.Utils\n * @param {Element} element\n * @return {Object} position - Coordinates of the element and its `scrollTop`\n */\nexport default function getOffsetRect(element) {\n let elementRect;\n if (element.nodeName === 'HTML') {\n const { width, height } = getWindowSizes(element.ownerDocument);\n elementRect = {\n width,\n height,\n left: 0,\n top: 0,\n };\n } else {\n elementRect = {\n width: element.offsetWidth,\n height: element.offsetHeight,\n left: element.offsetLeft,\n top: element.offsetTop,\n };\n }\n\n // position\n return getClientRect(elementRect);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n const window = element.ownerDocument.defaultView;\n const styles = window.getComputedStyle(element);\n const x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);\n const y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);\n const result = {\n width: element.offsetWidth + y,\n height: element.offsetHeight + x,\n };\n return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n placement = placement.split('-')[0];\n\n // Get popper node sizes\n const popperRect = getOuterSizes(popper);\n\n // Add position, width and height to our offsets object\n const popperOffsets = {\n width: popperRect.width,\n height: popperRect.height,\n };\n\n // depending by the popper placement we have to compute its offsets slightly differently\n const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n const mainSide = isHoriz ? 'top' : 'left';\n const secondarySide = isHoriz ? 'left' : 'top';\n const measurement = isHoriz ? 'height' : 'width';\n const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n popperOffsets[mainSide] =\n referenceOffsets[mainSide] +\n referenceOffsets[measurement] / 2 -\n popperRect[measurement] / 2;\n if (placement === secondarySide) {\n popperOffsets[secondarySide] =\n referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n } else {\n popperOffsets[secondarySide] =\n referenceOffsets[getOppositePlacement(secondarySide)];\n }\n\n return popperOffsets;\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getFixedPositionOffsetParent from './getFixedPositionOffsetParent';\nimport getReferenceNode from './getReferenceNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @param {Element} fixedPosition - is in fixed position mode\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference, fixedPosition = null) {\n const commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n for (let i = 0; i < prefixes.length; i++) {\n const prefix = prefixes[i];\n const toCheck = prefix ? `${prefix}${upperProp}` : property;\n if (typeof document.body.style[toCheck] !== 'undefined') {\n return toCheck;\n }\n }\n return null;\n}\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n const getType = {};\n return (\n functionToCheck &&\n getType.toString.call(functionToCheck) === '[object Function]'\n );\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n return modifiers.some(\n ({ name, enabled }) => enabled && name === modifierName\n );\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.
\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n modifiers,\n requestingName,\n requestedName\n) {\n const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n const isRequired =\n !!requesting &&\n modifiers.some(modifier => {\n return (\n modifier.name === requestedName &&\n modifier.enabled &&\n modifier.order < requesting.order\n );\n });\n\n if (!isRequired) {\n const requesting = `\\`${requestingName}\\``;\n const requested = `\\`${requestedName}\\``;\n console.warn(\n `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n );\n }\n return isRequired;\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n const ownerDocument = element.ownerDocument;\n return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n // Remove resize event listener on window\n getWindow(reference).removeEventListener('resize', state.updateBound);\n\n // Remove scroll event listener on scroll parents\n state.scrollParents.forEach(target => {\n target.removeEventListener('scroll', state.updateBound);\n });\n\n // Reset state\n state.updateBound = null;\n state.scrollParents = [];\n state.scrollElement = null;\n state.eventsEnabled = false;\n return state;\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n const modifiersToRun = ends === undefined\n ? modifiers\n : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n modifiersToRun.forEach(modifier => {\n if (modifier['function']) { // eslint-disable-line dot-notation\n console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n }\n const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n if (modifier.enabled && isFunction(fn)) {\n // Add properties to offsets to make them a complete clientRect object\n // we do this before each modifier to make sure the previous one doesn't\n // mess with these values\n data.offsets.popper = getClientRect(data.offsets.popper);\n data.offsets.reference = getClientRect(data.offsets.reference);\n\n data = fn(data, modifier);\n }\n });\n\n return data;\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n Object.keys(attributes).forEach(function(prop) {\n const value = attributes[prop];\n if (value !== false) {\n element.setAttribute(prop, attributes[prop]);\n } else {\n element.removeAttribute(prop);\n }\n });\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n Object.keys(styles).forEach(prop => {\n let unit = '';\n // add unit if the value is numeric and is one of the following\n if (\n ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n -1 &&\n isNumeric(styles[prop])\n ) {\n unit = 'px';\n }\n element.style[prop] = styles[prop] + unit;\n });\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n const isBody = scrollParent.nodeName === 'BODY';\n const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n target.addEventListener(event, callback, { passive: true });\n\n if (!isBody) {\n attachToScrollParents(\n getScrollParent(target.parentNode),\n event,\n callback,\n scrollParents\n );\n }\n scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n reference,\n options,\n state,\n updateBound\n) {\n // Resize event listener on window\n state.updateBound = updateBound;\n getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n // Scroll event listener on scroll parents\n const scrollElement = getScrollParent(reference);\n attachToScrollParents(\n scrollElement,\n 'scroll',\n state.updateBound,\n state.scrollParents\n );\n state.scrollElement = scrollElement;\n state.eventsEnabled = true;\n\n return state;\n}\n","export default typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined';\n","import isBrowser from './isBrowser';\n\nconst timeoutDuration = (function(){\n const longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\n for (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n return 1;\n }\n }\n return 0;\n}());\n\nexport function microtaskDebounce(fn) {\n let called = false\n return () => {\n if (called) {\n return\n }\n called = true\n window.Promise.resolve().then(() => {\n called = false\n fn()\n })\n }\n}\n\nexport function taskDebounce(fn) {\n let scheduled = false;\n return () => {\n if (!scheduled) {\n scheduled = true;\n setTimeout(() => {\n scheduled = false;\n fn();\n }, timeoutDuration);\n }\n };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n ? microtaskDebounce\n : taskDebounce);\n","import computeAutoPlacement from './computeAutoPlacement';\nimport debounce from './debounce';\nimport findIndex from './findIndex';\nimport getBordersSize from './getBordersSize';\nimport getBoundaries from './getBoundaries';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getClientRect from './getClientRect';\nimport getOffsetParent from './getOffsetParent';\nimport getOffsetRect from './getOffsetRect';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getOuterSizes from './getOuterSizes';\nimport getParentNode from './getParentNode';\nimport getPopperOffsets from './getPopperOffsets';\nimport getReferenceOffsets from './getReferenceOffsets';\nimport getScroll from './getScroll';\nimport getScrollParent from './getScrollParent';\nimport getStyleComputedProperty from './getStyleComputedProperty';\nimport getSupportedPropertyName from './getSupportedPropertyName';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport isFunction from './isFunction';\nimport isModifierEnabled from './isModifierEnabled';\nimport isModifierRequired from './isModifierRequired';\nimport isNumeric from './isNumeric';\nimport removeEventListeners from './removeEventListeners';\nimport runModifiers from './runModifiers';\nimport setAttributes from './setAttributes';\nimport setStyles from './setStyles';\nimport setupEventListeners from './setupEventListeners';\n\n/** @namespace Popper.Utils */\nexport {\n computeAutoPlacement,\n debounce,\n findIndex,\n getBordersSize,\n getBoundaries,\n getBoundingClientRect,\n getClientRect,\n getOffsetParent,\n getOffsetRect,\n getOffsetRectRelativeToArbitraryNode,\n getOuterSizes,\n getParentNode,\n getPopperOffsets,\n getReferenceOffsets,\n getScroll,\n getScrollParent,\n getStyleComputedProperty,\n getSupportedPropertyName,\n getWindowSizes,\n isFixed,\n isFunction,\n isModifierEnabled,\n isModifierRequired,\n isNumeric,\n removeEventListeners,\n runModifiers,\n setAttributes,\n setStyles,\n setupEventListeners,\n};\n\n// This is here just for backward compatibility with versions lower than v1.10.3\n// you should import the utilities using named exports, if you want them all use:\n// ```\n// import * as PopperUtils from 'popper-utils';\n// ```\n// The default export will be removed in the next major version.\nexport default {\n computeAutoPlacement,\n debounce,\n findIndex,\n getBordersSize,\n getBoundaries,\n getBoundingClientRect,\n getClientRect,\n getOffsetParent,\n getOffsetRect,\n getOffsetRectRelativeToArbitraryNode,\n getOuterSizes,\n getParentNode,\n getPopperOffsets,\n getReferenceOffsets,\n getScroll,\n getScrollParent,\n getStyleComputedProperty,\n getSupportedPropertyName,\n getWindowSizes,\n isFixed,\n isFunction,\n isModifierEnabled,\n isModifierRequired,\n 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umd/popper.jsnu[/**! * @fileOverview Kickass library to create and place poppers near their reference elements. * @version 1.16.1 * @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']) + parseFloat(styles['border' + sideB + 'Width']); } 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); var borderLeftWidth = parseFloat(styles.borderLeftWidth); // 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); var marginLeft = parseFloat(styles.marginLeft); 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.
* 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 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.
* 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$offsets.reference; var isVertical = ['left', 'right'].indexOf(placement) !== -1; var len = isVertical ? 'height' : 'width'; var sideCapitalized = isVertical ? 'Top' : 'Left'; var side = sideCapitalized.toLowerCase(); var altSide = isVertical ? 'left' : 'top'; var opSide = isVertical ? 'bottom' : 'right'; var arrowElementSize = getOuterSizes(arrowElement)[len]; // // extends keepTogether behavior making sure the popper and its // reference have enough pixels in conjunction // // top/left side if (reference[opSide] - arrowElementSize < popper[side]) { data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize); } // bottom/right side if (reference[side] + arrowElementSize > popper[opSide]) { data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide]; } data.offsets.popper = getClientRect(data.offsets.popper); // compute center of the popper var center = reference[side] + reference[len] / 2 - arrowElementSize / 2; // Compute the sideValue using the updated popper offsets // take popper margin in account because we don't have this info available var css = getStyleComputedProperty(data.instance.popper); var popperMarginSide = parseFloat(css['margin' + sideCapitalized]); var popperBorderSide = parseFloat(css['border' + sideCapitalized + 'Width']); var sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide; // prevent arrowElement from being placed not contiguously to its popper sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0); data.arrowElement = arrowElement; data.offsets.arrow = (_data$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.
* 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.
* 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.
* 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.
* 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.
* It will read the variation of the `placement` property.
* 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.
* 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.
* The latter is a deprecated method because it leads to confusion and will be * removed in v2.
* 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.
* We can say it has "escaped the boundaries" — or just "escaped".
* 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.
* These can be overridden using the `options` argument of Popper.js.
* 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.
* By default, it is set to no-op.
* 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.
* By default, it is set to no-op.
* 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.
* 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 PK!>=*=*umd/popper-utils.min.jsnu[/* Copyright (C) Federico Zivolo 2020 Distributed under the MIT License (license terms are at http://opensource.org/licenses/MIT). */(function(a,b){'object'==typeof exports&&'undefined'!=typeof module?b(exports):'function'==typeof define&&define.amd?define(['exports'],b):b(a.PopperUtils={})})(this,function(a){'use strict';function b(a,b){if(1!==a.nodeType)return[];var c=a.ownerDocument.defaultView,d=c.getComputedStyle(a,null);return b?d[b]:d}function c(a){return'HTML'===a.nodeName?a:a.parentNode||a.host}function d(a){if(!a)return document.body;switch(a.nodeName){case'HTML':case'BODY':return a.ownerDocument.body;case'#document':return a.body;}var e=b(a),f=e.overflow,g=e.overflowX,h=e.overflowY;return /(auto|scroll|overlay)/.test(f+h+g)?a:d(c(a))}function e(a){return a&&a.referenceNode?a.referenceNode:a}function f(a){return 11===a?T:10===a?U:T||U}function g(a){if(!a)return document.documentElement;for(var c=f(10)?document.body:null,d=a.offsetParent||null;d===c&&a.nextElementSibling;)d=(a=a.nextElementSibling).offsetParent;var e=d&&d.nodeName;return e&&'BODY'!==e&&'HTML'!==e?-1!==['TH','TD','TABLE'].indexOf(d.nodeName)&&'static'===b(d,'position')?g(d):d:a?a.ownerDocument.documentElement:document.documentElement}function h(a){var b=a.nodeName;return'BODY'!==b&&('HTML'===b||g(a.firstElementChild)===a)}function i(a){return null===a.parentNode?a:i(a.parentNode)}function j(a,b){if(!a||!a.nodeType||!b||!b.nodeType)return document.documentElement;var c=a.compareDocumentPosition(b)&Node.DOCUMENT_POSITION_FOLLOWING,d=c?a:b,e=c?b:a,f=document.createRange();f.setStart(d,0),f.setEnd(e,0);var k=f.commonAncestorContainer;if(a!==k&&b!==k||d.contains(e))return h(k)?k:g(k);var l=i(a);return l.host?j(l.host,b):j(a,i(b).host)}function k(a){var b=1=c.clientWidth&&d>=c.clientHeight}),k=0