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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! h}K }K 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
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Copyright (C) Federico Zivolo 2020
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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 ! :Qf f popper-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 ! E umd/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 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! Y\Z Z
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).
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