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/**! * @fileOverview Kickass library to create and place poppers near their reference elements. * @version 1.12.6 * @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 window.document !== 'undefined'; var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox']; var timeoutDuration = 0; for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) { if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) { timeoutDuration = 1; break; } }
function microtaskDebounce(fn) { var called = false; return function () { if (called) { return; } called = true; 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 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 window.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)/.test(overflow + overflowY + overflowX)) { return element; }
return getScrollParent(getParentNode(element)); }
/** * Returns the offset parent of the given element * @method * @memberof Popper.Utils * @argument {Element} element * @returns {Element} offset parent */ function getOffsetParent(element) { // NOTE: 1 DOM access here
var offsetParent = element && element.offsetParent; var nodeName = offsetParent && offsetParent.nodeName;
if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') { if (element) { return element.ownerDocument.documentElement; }
return window.document.documentElement; }
// .offsetParent will return the closest TD or TABLE in case
// no offsetParent is present, I hate this job...
if (['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 window.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 +styles['border' + sideA + 'Width'].split('px')[0] + +styles['border' + sideB + 'Width'].split('px')[0]; }
/** * Tells if you are running Internet Explorer 10 * @method * @memberof Popper.Utils * @returns {Boolean} isIE10 */ var isIE10 = undefined;
var isIE10$1 = function () { if (isIE10 === undefined) { isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1; } return isIE10; };
function getSize(axis, body, html, computedStyle) { return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE10$1() ? html['offset' + axis] + computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')] + computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')] : 0); }
function getWindowSizes() { var body = window.document.body; var html = window.document.documentElement; var computedStyle = isIE10$1() && window.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
if (isIE10$1()) { try { 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; } catch (err) { } } else { rect = element.getBoundingClientRect(); }
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() : {}; var width = sizes.width || element.clientWidth || result.right - result.left; var height = sizes.height || element.clientHeight || result.bottom - result.top;
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 isIE10 = isIE10$1(); var isHTML = parent.nodeName === 'HTML'; var childrenRect = getBoundingClientRect(children); var parentRect = getBoundingClientRect(parent); var scrollParent = getScrollParent(children);
var styles = getStyleComputedProperty(parent); var borderTopWidth = +styles.borderTopWidth.split('px')[0]; var borderLeftWidth = +styles.borderLeftWidth.split('px')[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 = +styles.marginTop.split('px')[0]; var marginLeft = +styles.marginLeft.split('px')[0];
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 ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') { offsets = includeScroll(offsets, parent); }
return offsets; }
function getViewportOffsetRectRelativeToArtbitraryNode(element) { 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 = getScroll(html); var scrollLeft = getScroll(html, 'left');
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; } return isFixed(getParentNode(element)); }
/** * 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 * @returns {Object} Coordinates of the boundaries */ function getBoundaries(popper, reference, padding, boundariesElement) { // NOTE: 1 DOM access here
var boundaries = { top: 0, left: 0 }; var offsetParent = findCommonOffsetParent(popper, reference);
// Handle viewport case
if (boundariesElement === 'viewport') { boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent); } else { // Handle other cases based on DOM element used as boundaries
var boundariesNode = void 0; if (boundariesElement === 'scrollParent') { boundariesNode = getScrollParent(getParentNode(popper)); if (boundariesNode.nodeName === 'BODY') { boundariesNode = popper.ownerDocument.documentElement; } } else if (boundariesElement === 'window') { boundariesNode = popper.ownerDocument.documentElement; } else { boundariesNode = boundariesElement; }
var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent);
// In case of HTML, we need a different computation
if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) { var _getWindowSizes = getWindowSizes(), 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
boundaries.left += padding; boundaries.top += padding; boundaries.right -= padding; boundaries.bottom -= padding;
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) * @returns {Object} An object containing the offsets which will be applied to the popper */ function getReferenceOffsets(state, popper, reference) { var commonOffsetParent = findCommonOffsetParent(popper, reference); return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent); }
/** * 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 styles = window.getComputedStyle(element); var x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom); var y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight); var result = { width: element.offsetWidth + y, height: element.offsetHeight + x }; return result; }
/** * Get the opposite placement of the given one * @method * @memberof Popper.Utils * @argument {String} placement * @returns {String} flipped placement */ function getOppositePlacement(placement) { var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' }; return placement.replace(/left|right|bottom|top/g, function (matched) { return hash[matched]; }); }
/** * Get offsets to the popper * @method * @memberof Popper.Utils * @param {Object} position - CSS position the Popper will get applied * @param {HTMLElement} popper - the popper element * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this) * @param {String} placement - one of the valid placement options * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper */ function getPopperOffsets(popper, referenceOffsets, placement) { placement = placement.split('-')[0];
// Get popper node sizes
var popperRect = getOuterSizes(popper);
// Add position, width and height to our offsets object
var popperOffsets = { width: popperRect.width, height: popperRect.height };
// depending by the popper placement we have to compute its offsets slightly differently
var isHoriz = ['right', 'left'].indexOf(placement) !== -1; var mainSide = isHoriz ? 'top' : 'left'; var secondarySide = isHoriz ? 'left' : 'top'; var measurement = isHoriz ? 'height' : 'width'; var secondaryMeasurement = !isHoriz ? 'height' : 'width';
popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2; if (placement === secondarySide) { popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement]; } else { popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)]; }
return popperOffsets; }
/** * Mimics the `find` method of Array * @method * @memberof Popper.Utils * @argument {Array} arr * @argument prop * @argument value * @returns index or -1 */ function find(arr, check) { // use native find if supported
if (Array.prototype.find) { return arr.find(check); }
// use `filter` to obtain the same behavior of `find`
return arr.filter(check)[0]; }
/** * Return the index of the matching object * @method * @memberof Popper.Utils * @argument {Array} arr * @argument prop * @argument value * @returns index or -1 */ function findIndex(arr, prop, value) { // use native findIndex if supported
if (Array.prototype.findIndex) { return arr.findIndex(function (cur) { return cur[prop] === value; }); }
// use `find` + `indexOf` if `findIndex` isn't supported
var match = find(arr, function (obj) { return obj[prop] === value; }); return arr.indexOf(match); }
/** * Loop trough the list of modifiers and run them in order, * each of them will then edit the data object. * @method * @memberof Popper.Utils * @param {dataObject} data * @param {Array} modifiers * @param {String} ends - Optional modifier name used as stopper * @returns {dataObject} */ function runModifiers(modifiers, data, ends) { var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
modifiersToRun.forEach(function (modifier) { if (modifier['function']) { // eslint-disable-line dot-notation
console.warn('`modifier.function` is deprecated, use `modifier.fn`!'); } var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
if (modifier.enabled && isFunction(fn)) { // Add properties to offsets to make them a complete clientRect object
// we do this before each modifier to make sure the previous one doesn't
// mess with these values
data.offsets.popper = getClientRect(data.offsets.popper); data.offsets.reference = getClientRect(data.offsets.reference);
data = fn(data, modifier); } });
return data; }
/** * Updates the position of the popper, computing the new offsets and applying * the new style.<br /> * Prefer `scheduleUpdate` over `update` because of performance reasons. * @method * @memberof Popper */ function update() { // if popper is destroyed, don't perform any further update
if (this.state.isDestroyed) { return; }
var data = { instance: this, styles: {}, arrowStyles: {}, attributes: {}, flipped: false, offsets: {} };
// compute reference element offsets
data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference);
// 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;
// compute the popper offsets
data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement); data.offsets.popper.position = '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 - 1; i++) { var prefix = prefixes[i]; var toCheck = prefix ? '' + prefix + upperProp : property; if (typeof window.document.body.style[toCheck] !== 'undefined') { return toCheck; } } return null; }
/** * Destroy 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.left = ''; this.popper.style.position = ''; this.popper.style.top = ''; this.popper.style[getSupportedPropertyName('transform')] = ''; }
this.disableEventListeners();
// remove the popper if user explicity 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) { window.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);
// 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: 'absolute' });
return options; }
/** * @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 };
// floor sides to avoid blurry text
var offsets = { left: Math.floor(popper.left), top: Math.floor(popper.top), bottom: Math.floor(popper.bottom), right: Math.floor(popper.right) };
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') { top = -offsetParentRect.height + offsets.bottom; } else { top = offsets.top; } if (sideB === 'right') { left = -offsetParentRect.width + offsets.right; } else { left = offsets.left; } if (gpuAcceleration && prefixedProperty) { styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)'; styles[sideA] = 0; styles[sideB] = 0; styles.willChange = 'transform'; } else { // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties
var invertTop = sideA === 'bottom' ? -1 : 1; var invertLeft = sideB === 'right' ? -1 : 1; styles[sideA] = top * invertTop; styles[sideB] = left * invertLeft; styles.willChange = sideA + ', ' + sideB; }
// Attributes
var attributes = { 'x-placement': data.placement };
// Update `data` attributes, styles and arrowStyles
data.attributes = _extends({}, attributes, data.attributes); data.styles = _extends({}, styles, data.styles); data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);
return data; }
/** * Helper used to know if the given modifier depends from another one.<br /> * It checks if the needed modifier is listed and enabled. * @method * @memberof Popper.Utils * @param {Array} modifiers - list of modifiers * @param {String} requestingName - name of requesting modifier * @param {String} requestedName - name of requested modifier * @returns {Boolean} */ function isModifierRequired(modifiers, requestingName, requestedName) { var requesting = find(modifiers, function (_ref) { var name = _ref.name; return name === requestingName; });
var isRequired = !!requesting && modifiers.some(function (modifier) { return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order; });
if (!isRequired) { var _requesting = '`' + requestingName + '`'; var requested = '`' + requestedName + '`'; console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!'); } return isRequired; }
/** * @function * @memberof Modifiers * @argument {Object} data - The data object generated by update method * @argument {Object} options - Modifiers configuration and options * @returns {Object} The data object, properly modified */ function arrow(data, options) { // 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 conjuction
//
// 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]; }
// 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 popperMarginSide = getStyleComputedProperty(data.instance.popper, 'margin' + sideCapitalized).replace('px', ''); var sideValue = center - getClientRect(data.offsets.popper)[side] - popperMarginSide;
// 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[side] = Math.round(sideValue); data.offsets.arrow[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.<br /> * Valid placements are: * - `auto` * - `top` * - `right` * - `bottom` * - `left` * * Each placement can have a variation from this list: * - `-start` * - `-end` * * Variations are interpreted easily if you think of them as the left to right * written languages. Horizontally (`top` and `bottom`), `start` is left and `end` * is right.<br /> * Vertically (`left` and `right`), `start` is top and `end` is bottom. * * Some valid examples are: * - `top-end` (on top of reference, right aligned) * - `right-start` (on right of reference, top aligned) * - `bottom` (on bottom, centered) * - `auto-right` (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);
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; var flippedVariation = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);
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); }
var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement); options.boundaries = boundaries;
var order = options.priority; var popper = data.offsets.popper;
var check = { primary: function primary(placement) { var value = popper[placement]; if (popper[placement] < boundaries[placement] && !options.escapeWithReference) { value = Math.max(popper[placement], boundaries[placement]); } return defineProperty({}, placement, value); }, secondary: function secondary(placement) { var mainSide = placement === 'right' ? 'left' : 'top'; var value = popper[mainSide]; if (popper[placement] > boundaries[placement] && !options.escapeWithReference) { value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height)); } return defineProperty({}, mainSide, value); } };
order.forEach(function (placement) { var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary'; popper = _extends({}, popper, check[side](placement)); });
data.offsets.popper = popper;
return data; }
/** * @function * @memberof Modifiers * @argument {Object} data - The data object generated by `update` method * @argument {Object} options - Modifiers configuration and options * @returns {Object} The data object, properly modified */ function shift(data) { var placement = data.placement; var basePlacement = placement.split('-')[0]; var shiftvariation = placement.split('-')[1];
// if shift shiftvariation is specified, run the modifier
if (shiftvariation) { var _data$offsets = data.offsets, reference = _data$offsets.reference, popper = _data$offsets.popper;
var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1; var side = isVertical ? 'left' : 'top'; var measurement = isVertical ? 'width' : 'height';
var shiftOffsets = { start: defineProperty({}, side, reference[side]), end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement]) };
data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]); }
return data; }
/** * @function * @memberof Modifiers * @argument {Object} data - The data object generated by update method * @argument {Object} options - Modifiers configuration and options * @returns {Object} The data object, properly modified */ function hide(data) { if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) { return data; }
var refRect = data.offsets.reference; var bound = find(data.instance.modifiers, function (modifier) { return modifier.name === 'preventOverflow'; }).boundaries;
if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) { // Avoid unnecessary DOM access if visibility hasn't changed
if (data.hide === true) { return data; }
data.hide = true; data.attributes['x-out-of-boundaries'] = ''; } else { // Avoid unnecessary DOM access if visibility hasn't changed
if (data.hide === false) { return data; }
data.hide = false; data.attributes['x-out-of-boundaries'] = false; }
return data; }
/** * @function * @memberof Modifiers * @argument {Object} data - The data object generated by `update` method * @argument {Object} options - Modifiers configuration and options * @returns {Object} The data object, properly modified */ function inner(data) { var placement = data.placement; var basePlacement = placement.split('-')[0]; var _data$offsets = data.offsets, popper = _data$offsets.popper, reference = _data$offsets.reference;
var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;
var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;
popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);
data.placement = getOppositePlacement(placement); data.offsets.popper = getClientRect(popper);
return data; }
/** * Modifier function, each modifier can have a function of this type assigned * to its `fn` property.<br /> * These functions will be called on each update, this means that you must * make sure they are performant enough to avoid performance bottlenecks. * * @function ModifierFn * @argument {dataObject} data - The data object generated by `update` method * @argument {Object} options - Modifiers configuration and options * @returns {dataObject} The data object, properly modified */
/** * Modifiers are plugins used to alter the behavior of your poppers.<br /> * Popper.js uses a set of 9 modifiers to provide all the basic functionalities * needed by the library. * * Usually you don't want to override the `order`, `fn` and `onLoad` props. * All the other properties are configurations that could be tweaked. * @namespace modifiers */ var modifiers = { /** * Modifier used to shift the popper on the start or end of its reference * element.<br /> * It will read the variation of the `placement` property.<br /> * It can be one either `-end` or `-start`. * @memberof modifiers * @inner */ shift: { /** @prop {number} order=100 - Index used to define the order of execution */ order: 100, /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ enabled: true, /** @prop {ModifierFn} */ fn: shift },
/** * The `offset` modifier can shift your popper on both its axis. * * It accepts the following units: * - `px` or unitless, interpreted as pixels * - `%` or `%r`, percentage relative to the length of the reference element * - `%p`, percentage relative to the length of the popper element * - `vw`, CSS viewport width unit * - `vh`, CSS viewport height unit * * For length is intended the main axis relative to the placement of the popper.<br /> * This means that if the placement is `top` or `bottom`, the length will be the * `width`. In case of `left` or `right`, it will be the height. * * You can provide a single value (as `Number` or `String`), or a pair of values * as `String` divided by a comma or one (or more) white spaces.<br /> * The latter is a deprecated method because it leads to confusion and will be * removed in v2.<br /> * Additionally, it accepts additions and subtractions between different units. * Note that multiplications and divisions aren't supported. * * Valid examples are: * ```
* 10 * '10%' * '10, 10' * '10%, 10' * '10 + 10%' * '10 - 5vh + 3%' * '-10px + 5vh, 5px - 6%' * ```
* > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap * > with their reference element, unfortunately, you will have to disable the `flip` modifier. * > More on this [reading 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. * * An scenario exists where the reference itself is not within the boundaries.<br /> * We can say it has "escaped the boundaries" — or just "escaped".<br /> * In this case we need to decide whether the popper should either: * * - detach from the reference and remain "trapped" in the boundaries, or * - if it should ignore the boundary and "escape with its reference" * * When `escapeWithReference` is set to`true` and reference is completely * outside its boundaries, the popper will overflow (or completely leave) * the boundaries in order to remain attached to the edge of the reference. * * @memberof modifiers * @inner */ preventOverflow: { /** @prop {number} order=300 - Index used to define the order of execution */ order: 300, /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */ enabled: true, /** @prop {ModifierFn} */ fn: preventOverflow, /** * @prop {Array} [priority=['left','right','top','bottom']] * Popper will try to prevent overflow following these priorities by default, * then, it could overflow on the left and on top of the `boundariesElement` */ priority: ['left', 'right', 'top', 'bottom'], /** * @prop {number} padding=5 * Amount of pixel used to define a minimum distance between the boundaries * and the popper this makes sure the popper has always 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 eachothers * without leaving any gap between the two. Expecially useful when the arrow is * enabled and you want to assure it to point 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 conjuction 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' },
/** * 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 you 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 informations used by Popper.js * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks. * @name dataObject * @property {Object} data.instance The Popper.js instance * @property {String} data.placement Placement applied to popper * @property {String} data.originalPlacement Placement originally defined on init * @property {Boolean} data.flipped True if popper has been flipped by flip modifier * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper. * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`) * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`) * @property {Object} data.boundaries Offsets of the popper boundaries * @property {Object} data.offsets The measurements of popper, reference and arrow elements. * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0 */
/** * Default options provided to Popper.js constructor.<br /> * These can be overriden using the `options` argument of Popper.js.<br /> * To override an option, simply pass as 3rd argument an object with the same * structure of this object, 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',
/** * Whether events (resize, scroll) are initially enabled * @prop {Boolean} eventsEnabled=true */ eventsEnabled: true,
/** * Set to true if you want to automatically remove the popper when * you call the `destroy` method. * @prop {Boolean} removeOnDestroy=false */ removeOnDestroy: false,
/** * Callback called when the popper is created.<br /> * By default, is set to no-op.<br /> * Access Popper.js instance with `data.instance`. * @prop {onCreate} */ onCreate: function onCreate() { },
/** * Callback called when the popper is updated, this callback is not called * on the initialization/creation of the popper, but only on subsequent * updates.<br /> * By default, is set to no-op.<br /> * Access Popper.js instance with `data.instance`. * @prop {onUpdate} */ onUpdate: function onUpdate() { },
/** * List of modifiers used to modify the offsets before they are applied to the popper. * They provide most of the functionalities of Popper.js * @prop {modifiers} */ modifiers: modifiers };
/** * @callback onCreate * @param {dataObject} data */
/** * @callback onUpdate * @param {dataObject} data */
// Utils
// Methods
var Popper = function () { /** * Create a new Popper.js instance * @class Popper * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper * @param {HTMLElement} popper - The HTML element used as 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); }
/** * Schedule an update, it will run on the next UI update available * @method scheduleUpdate * @memberof Popper */
/** * Collection of utilities useful when writing custom modifiers. * Starting from version 1.7, this method is available only if you * include `popper-utils.js` before `popper.js`. * * **DEPRECATION**: This way to access PopperUtils is deprecated * and will be removed in v2! Use the PopperUtils module directly instead. * Due to the high instability of the methods contained in Utils, we can't * guarantee them to follow semver. Use them at your own risk! * @static * @private * @type {Object} * @deprecated since version 1.8 * @member Utils * @memberof Popper */ }]); return Popper; }();
/** * The `referenceObject` is an object that provides an interface compatible with Popper.js * and lets you use it as replacement of a real DOM node.<br /> * You can use this method to position a popper relatively to a set of coordinates * in case you don't have a DOM node to use as reference. * * ```
* new Popper(referenceObject, popperNode); * ```
* * NB: This feature isn't supported in Internet Explorer 10 * @name referenceObject * @property {Function} data.getBoundingClientRect * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method. * @property {number} data.clientWidth * An ES6 getter that will return the width of the virtual reference element. * @property {number} data.clientHeight * An ES6 getter that will return the height of the virtual reference element. */
Popper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils; Popper.placements = placements; Popper.Defaults = Defaults;
return Popper; }))); //# sourceMappingURL=popper.js.map
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