summaryrefslogtreecommitdiffstats
path: root/web-tools/web/_static/popperjs/popper.js
diff options
context:
space:
mode:
Diffstat (limited to 'web-tools/web/_static/popperjs/popper.js')
-rw-r--r--web-tools/web/_static/popperjs/popper.js1872
1 files changed, 1872 insertions, 0 deletions
diff --git a/web-tools/web/_static/popperjs/popper.js b/web-tools/web/_static/popperjs/popper.js
new file mode 100644
index 0000000..b7103be
--- /dev/null
+++ b/web-tools/web/_static/popperjs/popper.js
@@ -0,0 +1,1872 @@
+/**
+ * @popperjs/core v2.5.4 - MIT License
+ */
+
+(function (global, factory) {
+ typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+ typeof define === 'function' && define.amd ? define(['exports'], factory) :
+ (global = global || self, factory(global.Popper = {}));
+}(this, (function (exports) { 'use strict';
+
+ function getBoundingClientRect(element) {
+ var rect = element.getBoundingClientRect();
+ return {
+ width: rect.width,
+ height: rect.height,
+ top: rect.top,
+ right: rect.right,
+ bottom: rect.bottom,
+ left: rect.left,
+ x: rect.left,
+ y: rect.top
+ };
+ }
+
+ /*:: import type { Window } from '../types'; */
+
+ /*:: declare function getWindow(node: Node | Window): Window; */
+ function getWindow(node) {
+ if (node.toString() !== '[object Window]') {
+ var ownerDocument = node.ownerDocument;
+ return ownerDocument ? ownerDocument.defaultView || window : window;
+ }
+
+ return node;
+ }
+
+ function getWindowScroll(node) {
+ var win = getWindow(node);
+ var scrollLeft = win.pageXOffset;
+ var scrollTop = win.pageYOffset;
+ return {
+ scrollLeft: scrollLeft,
+ scrollTop: scrollTop
+ };
+ }
+
+ /*:: declare function isElement(node: mixed): boolean %checks(node instanceof
+ Element); */
+
+ function isElement(node) {
+ var OwnElement = getWindow(node).Element;
+ return node instanceof OwnElement || node instanceof Element;
+ }
+ /*:: declare function isHTMLElement(node: mixed): boolean %checks(node instanceof
+ HTMLElement); */
+
+
+ function isHTMLElement(node) {
+ var OwnElement = getWindow(node).HTMLElement;
+ return node instanceof OwnElement || node instanceof HTMLElement;
+ }
+ /*:: declare function isShadowRoot(node: mixed): boolean %checks(node instanceof
+ ShadowRoot); */
+
+
+ function isShadowRoot(node) {
+ var OwnElement = getWindow(node).ShadowRoot;
+ return node instanceof OwnElement || node instanceof ShadowRoot;
+ }
+
+ function getHTMLElementScroll(element) {
+ return {
+ scrollLeft: element.scrollLeft,
+ scrollTop: element.scrollTop
+ };
+ }
+
+ function getNodeScroll(node) {
+ if (node === getWindow(node) || !isHTMLElement(node)) {
+ return getWindowScroll(node);
+ } else {
+ return getHTMLElementScroll(node);
+ }
+ }
+
+ function getNodeName(element) {
+ return element ? (element.nodeName || '').toLowerCase() : null;
+ }
+
+ function getDocumentElement(element) {
+ // $FlowFixMe: assume body is always available
+ return ((isElement(element) ? element.ownerDocument : element.document) || window.document).documentElement;
+ }
+
+ function getWindowScrollBarX(element) {
+ // If <html> has a CSS width greater than the viewport, then this will be
+ // incorrect for RTL.
+ // Popper 1 is broken in this case and never had a bug report so let's assume
+ // it's not an issue. I don't think anyone ever specifies width on <html>
+ // anyway.
+ // Browsers where the left scrollbar doesn't cause an issue report `0` for
+ // this (e.g. Edge 2019, IE11, Safari)
+ return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;
+ }
+
+ function getComputedStyle(element) {
+ return getWindow(element).getComputedStyle(element);
+ }
+
+ function isScrollParent(element) {
+ // Firefox wants us to check `-x` and `-y` variations as well
+ var _getComputedStyle = getComputedStyle(element),
+ overflow = _getComputedStyle.overflow,
+ overflowX = _getComputedStyle.overflowX,
+ overflowY = _getComputedStyle.overflowY;
+
+ return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+ }
+
+ // Composite means it takes into account transforms as well as layout.
+
+ function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
+ if (isFixed === void 0) {
+ isFixed = false;
+ }
+
+ var documentElement = getDocumentElement(offsetParent);
+ var rect = getBoundingClientRect(elementOrVirtualElement);
+ var isOffsetParentAnElement = isHTMLElement(offsetParent);
+ var scroll = {
+ scrollLeft: 0,
+ scrollTop: 0
+ };
+ var offsets = {
+ x: 0,
+ y: 0
+ };
+
+ if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
+ if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
+ isScrollParent(documentElement)) {
+ scroll = getNodeScroll(offsetParent);
+ }
+
+ if (isHTMLElement(offsetParent)) {
+ offsets = getBoundingClientRect(offsetParent);
+ offsets.x += offsetParent.clientLeft;
+ offsets.y += offsetParent.clientTop;
+ } else if (documentElement) {
+ offsets.x = getWindowScrollBarX(documentElement);
+ }
+ }
+
+ return {
+ x: rect.left + scroll.scrollLeft - offsets.x,
+ y: rect.top + scroll.scrollTop - offsets.y,
+ width: rect.width,
+ height: rect.height
+ };
+ }
+
+ // Returns the layout rect of an element relative to its offsetParent. Layout
+ // means it doesn't take into account transforms.
+ function getLayoutRect(element) {
+ return {
+ x: element.offsetLeft,
+ y: element.offsetTop,
+ width: element.offsetWidth,
+ height: element.offsetHeight
+ };
+ }
+
+ function getParentNode(element) {
+ if (getNodeName(element) === 'html') {
+ return element;
+ }
+
+ return (// $FlowFixMe: this is a quicker (but less type safe) way to save quite some bytes from the bundle
+ element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
+ element.parentNode || // DOM Element detected
+ // $FlowFixMe: need a better way to handle this...
+ element.host || // ShadowRoot detected
+ // $FlowFixMe: HTMLElement is a Node
+ getDocumentElement(element) // fallback
+
+ );
+ }
+
+ function getScrollParent(node) {
+ if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
+ // $FlowFixMe: assume body is always available
+ return node.ownerDocument.body;
+ }
+
+ if (isHTMLElement(node) && isScrollParent(node)) {
+ return node;
+ }
+
+ return getScrollParent(getParentNode(node));
+ }
+
+ /*
+ given a DOM element, return the list of all scroll parents, up the list of ancesors
+ until we get to the top window object. This list is what we attach scroll listeners
+ to, because if any of these parent elements scroll, we'll need to re-calculate the
+ reference element's position.
+ */
+
+ function listScrollParents(element, list) {
+ if (list === void 0) {
+ list = [];
+ }
+
+ var scrollParent = getScrollParent(element);
+ var isBody = getNodeName(scrollParent) === 'body';
+ var win = getWindow(scrollParent);
+ var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;
+ var updatedList = list.concat(target);
+ return isBody ? updatedList : // $FlowFixMe: isBody tells us target will be an HTMLElement here
+ updatedList.concat(listScrollParents(getParentNode(target)));
+ }
+
+ function isTableElement(element) {
+ return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
+ }
+
+ function getTrueOffsetParent(element) {
+ if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
+ getComputedStyle(element).position === 'fixed') {
+ return null;
+ }
+
+ var offsetParent = element.offsetParent;
+
+ if (offsetParent) {
+ var html = getDocumentElement(offsetParent);
+
+ if (getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static' && getComputedStyle(html).position !== 'static') {
+ return html;
+ }
+ }
+
+ return offsetParent;
+ } // `.offsetParent` reports `null` for fixed elements, while absolute elements
+ // return the containing block
+
+
+ function getContainingBlock(element) {
+ var currentNode = getParentNode(element);
+
+ while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
+ var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that
+ // create a containing block.
+
+ if (css.transform !== 'none' || css.perspective !== 'none' || css.willChange && css.willChange !== 'auto') {
+ return currentNode;
+ } else {
+ currentNode = currentNode.parentNode;
+ }
+ }
+
+ return null;
+ } // Gets the closest ancestor positioned element. Handles some edge cases,
+ // such as table ancestors and cross browser bugs.
+
+
+ function getOffsetParent(element) {
+ var window = getWindow(element);
+ var offsetParent = getTrueOffsetParent(element);
+
+ while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
+ offsetParent = getTrueOffsetParent(offsetParent);
+ }
+
+ if (offsetParent && getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static') {
+ return window;
+ }
+
+ return offsetParent || getContainingBlock(element) || window;
+ }
+
+ var top = 'top';
+ var bottom = 'bottom';
+ var right = 'right';
+ var left = 'left';
+ var auto = 'auto';
+ var basePlacements = [top, bottom, right, left];
+ var start = 'start';
+ var end = 'end';
+ var clippingParents = 'clippingParents';
+ var viewport = 'viewport';
+ var popper = 'popper';
+ var reference = 'reference';
+ var variationPlacements = /*#__PURE__*/basePlacements.reduce(function (acc, placement) {
+ return acc.concat([placement + "-" + start, placement + "-" + end]);
+ }, []);
+ var placements = /*#__PURE__*/[].concat(basePlacements, [auto]).reduce(function (acc, placement) {
+ return acc.concat([placement, placement + "-" + start, placement + "-" + end]);
+ }, []); // modifiers that need to read the DOM
+
+ var beforeRead = 'beforeRead';
+ var read = 'read';
+ var afterRead = 'afterRead'; // pure-logic modifiers
+
+ var beforeMain = 'beforeMain';
+ var main = 'main';
+ var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+ var beforeWrite = 'beforeWrite';
+ var write = 'write';
+ var afterWrite = 'afterWrite';
+ var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
+
+ function order(modifiers) {
+ var map = new Map();
+ var visited = new Set();
+ var result = [];
+ modifiers.forEach(function (modifier) {
+ map.set(modifier.name, modifier);
+ }); // On visiting object, check for its dependencies and visit them recursively
+
+ function sort(modifier) {
+ visited.add(modifier.name);
+ var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);
+ requires.forEach(function (dep) {
+ if (!visited.has(dep)) {
+ var depModifier = map.get(dep);
+
+ if (depModifier) {
+ sort(depModifier);
+ }
+ }
+ });
+ result.push(modifier);
+ }
+
+ modifiers.forEach(function (modifier) {
+ if (!visited.has(modifier.name)) {
+ // check for visited object
+ sort(modifier);
+ }
+ });
+ return result;
+ }
+
+ function orderModifiers(modifiers) {
+ // order based on dependencies
+ var orderedModifiers = order(modifiers); // order based on phase
+
+ return modifierPhases.reduce(function (acc, phase) {
+ return acc.concat(orderedModifiers.filter(function (modifier) {
+ return modifier.phase === phase;
+ }));
+ }, []);
+ }
+
+ function debounce(fn) {
+ var pending;
+ return function () {
+ if (!pending) {
+ pending = new Promise(function (resolve) {
+ Promise.resolve().then(function () {
+ pending = undefined;
+ resolve(fn());
+ });
+ });
+ }
+
+ return pending;
+ };
+ }
+
+ function format(str) {
+ for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+ args[_key - 1] = arguments[_key];
+ }
+
+ return [].concat(args).reduce(function (p, c) {
+ return p.replace(/%s/, c);
+ }, str);
+ }
+
+ var INVALID_MODIFIER_ERROR = 'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
+ var MISSING_DEPENDENCY_ERROR = 'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
+ var VALID_PROPERTIES = ['name', 'enabled', 'phase', 'fn', 'effect', 'requires', 'options'];
+ function validateModifiers(modifiers) {
+ modifiers.forEach(function (modifier) {
+ Object.keys(modifier).forEach(function (key) {
+ switch (key) {
+ case 'name':
+ if (typeof modifier.name !== 'string') {
+ console.error(format(INVALID_MODIFIER_ERROR, String(modifier.name), '"name"', '"string"', "\"" + String(modifier.name) + "\""));
+ }
+
+ break;
+
+ case 'enabled':
+ if (typeof modifier.enabled !== 'boolean') {
+ console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"enabled"', '"boolean"', "\"" + String(modifier.enabled) + "\""));
+ }
+
+ case 'phase':
+ if (modifierPhases.indexOf(modifier.phase) < 0) {
+ console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"phase"', "either " + modifierPhases.join(', '), "\"" + String(modifier.phase) + "\""));
+ }
+
+ break;
+
+ case 'fn':
+ if (typeof modifier.fn !== 'function') {
+ console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"fn"', '"function"', "\"" + String(modifier.fn) + "\""));
+ }
+
+ break;
+
+ case 'effect':
+ if (typeof modifier.effect !== 'function') {
+ console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"effect"', '"function"', "\"" + String(modifier.fn) + "\""));
+ }
+
+ break;
+
+ case 'requires':
+ if (!Array.isArray(modifier.requires)) {
+ console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requires"', '"array"', "\"" + String(modifier.requires) + "\""));
+ }
+
+ break;
+
+ case 'requiresIfExists':
+ if (!Array.isArray(modifier.requiresIfExists)) {
+ console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requiresIfExists"', '"array"', "\"" + String(modifier.requiresIfExists) + "\""));
+ }
+
+ break;
+
+ case 'options':
+ case 'data':
+ break;
+
+ default:
+ console.error("PopperJS: an invalid property has been provided to the \"" + modifier.name + "\" modifier, valid properties are " + VALID_PROPERTIES.map(function (s) {
+ return "\"" + s + "\"";
+ }).join(', ') + "; but \"" + key + "\" was provided.");
+ }
+
+ modifier.requires && modifier.requires.forEach(function (requirement) {
+ if (modifiers.find(function (mod) {
+ return mod.name === requirement;
+ }) == null) {
+ console.error(format(MISSING_DEPENDENCY_ERROR, String(modifier.name), requirement, requirement));
+ }
+ });
+ });
+ });
+ }
+
+ function uniqueBy(arr, fn) {
+ var identifiers = new Set();
+ return arr.filter(function (item) {
+ var identifier = fn(item);
+
+ if (!identifiers.has(identifier)) {
+ identifiers.add(identifier);
+ return true;
+ }
+ });
+ }
+
+ function getBasePlacement(placement) {
+ return placement.split('-')[0];
+ }
+
+ function mergeByName(modifiers) {
+ var merged = modifiers.reduce(function (merged, current) {
+ var existing = merged[current.name];
+ merged[current.name] = existing ? Object.assign(Object.assign(Object.assign({}, existing), current), {}, {
+ options: Object.assign(Object.assign({}, existing.options), current.options),
+ data: Object.assign(Object.assign({}, existing.data), current.data)
+ }) : current;
+ return merged;
+ }, {}); // IE11 does not support Object.values
+
+ return Object.keys(merged).map(function (key) {
+ return merged[key];
+ });
+ }
+
+ function getViewportRect(element) {
+ var win = getWindow(element);
+ var html = getDocumentElement(element);
+ var visualViewport = win.visualViewport;
+ var width = html.clientWidth;
+ var height = html.clientHeight;
+ var x = 0;
+ var y = 0; // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
+ // can be obscured underneath it.
+ // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
+ // if it isn't open, so if this isn't available, the popper will be detected
+ // to overflow the bottom of the screen too early.
+
+ if (visualViewport) {
+ width = visualViewport.width;
+ height = visualViewport.height; // Uses Layout Viewport (like Chrome; Safari does not currently)
+ // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
+ // errors due to floating point numbers, so we need to check precision.
+ // Safari returns a number <= 0, usually < -1 when pinch-zoomed
+ // Feature detection fails in mobile emulation mode in Chrome.
+ // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
+ // 0.001
+ // Fallback here: "Not Safari" userAgent
+
+ if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+ x = visualViewport.offsetLeft;
+ y = visualViewport.offsetTop;
+ }
+ }
+
+ return {
+ width: width,
+ height: height,
+ x: x + getWindowScrollBarX(element),
+ y: y
+ };
+ }
+
+ // of the `<html>` and `<body>` rect bounds if horizontally scrollable
+
+ function getDocumentRect(element) {
+ var html = getDocumentElement(element);
+ var winScroll = getWindowScroll(element);
+ var body = element.ownerDocument.body;
+ var width = Math.max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);
+ var height = Math.max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);
+ var x = -winScroll.scrollLeft + getWindowScrollBarX(element);
+ var y = -winScroll.scrollTop;
+
+ if (getComputedStyle(body || html).direction === 'rtl') {
+ x += Math.max(html.clientWidth, body ? body.clientWidth : 0) - width;
+ }
+
+ return {
+ width: width,
+ height: height,
+ x: x,
+ y: y
+ };
+ }
+
+ function contains(parent, child) {
+ var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method
+
+ if (parent.contains(child)) {
+ return true;
+ } // then fallback to custom implementation with Shadow DOM support
+ else if (rootNode && isShadowRoot(rootNode)) {
+ var next = child;
+
+ do {
+ if (next && parent.isSameNode(next)) {
+ return true;
+ } // $FlowFixMe: need a better way to handle this...
+
+
+ next = next.parentNode || next.host;
+ } while (next);
+ } // Give up, the result is false
+
+
+ return false;
+ }
+
+ function rectToClientRect(rect) {
+ return Object.assign(Object.assign({}, rect), {}, {
+ left: rect.x,
+ top: rect.y,
+ right: rect.x + rect.width,
+ bottom: rect.y + rect.height
+ });
+ }
+
+ function getInnerBoundingClientRect(element) {
+ var rect = getBoundingClientRect(element);
+ rect.top = rect.top + element.clientTop;
+ rect.left = rect.left + element.clientLeft;
+ rect.bottom = rect.top + element.clientHeight;
+ rect.right = rect.left + element.clientWidth;
+ rect.width = element.clientWidth;
+ rect.height = element.clientHeight;
+ rect.x = rect.left;
+ rect.y = rect.top;
+ return rect;
+ }
+
+ function getClientRectFromMixedType(element, clippingParent) {
+ return clippingParent === viewport ? rectToClientRect(getViewportRect(element)) : isHTMLElement(clippingParent) ? getInnerBoundingClientRect(clippingParent) : rectToClientRect(getDocumentRect(getDocumentElement(element)));
+ } // A "clipping parent" is an overflowable container with the characteristic of
+ // clipping (or hiding) overflowing elements with a position different from
+ // `initial`
+
+
+ function getClippingParents(element) {
+ var clippingParents = listScrollParents(getParentNode(element));
+ var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
+ var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;
+
+ if (!isElement(clipperElement)) {
+ return [];
+ } // $FlowFixMe: https://github.com/facebook/flow/issues/1414
+
+
+ return clippingParents.filter(function (clippingParent) {
+ return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body';
+ });
+ } // Gets the maximum area that the element is visible in due to any number of
+ // clipping parents
+
+
+ function getClippingRect(element, boundary, rootBoundary) {
+ var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);
+ var clippingParents = [].concat(mainClippingParents, [rootBoundary]);
+ var firstClippingParent = clippingParents[0];
+ var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {
+ var rect = getClientRectFromMixedType(element, clippingParent);
+ accRect.top = Math.max(rect.top, accRect.top);
+ accRect.right = Math.min(rect.right, accRect.right);
+ accRect.bottom = Math.min(rect.bottom, accRect.bottom);
+ accRect.left = Math.max(rect.left, accRect.left);
+ return accRect;
+ }, getClientRectFromMixedType(element, firstClippingParent));
+ clippingRect.width = clippingRect.right - clippingRect.left;
+ clippingRect.height = clippingRect.bottom - clippingRect.top;
+ clippingRect.x = clippingRect.left;
+ clippingRect.y = clippingRect.top;
+ return clippingRect;
+ }
+
+ function getVariation(placement) {
+ return placement.split('-')[1];
+ }
+
+ function getMainAxisFromPlacement(placement) {
+ return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
+ }
+
+ function computeOffsets(_ref) {
+ var reference = _ref.reference,
+ element = _ref.element,
+ placement = _ref.placement;
+ var basePlacement = placement ? getBasePlacement(placement) : null;
+ var variation = placement ? getVariation(placement) : null;
+ var commonX = reference.x + reference.width / 2 - element.width / 2;
+ var commonY = reference.y + reference.height / 2 - element.height / 2;
+ var offsets;
+
+ switch (basePlacement) {
+ case top:
+ offsets = {
+ x: commonX,
+ y: reference.y - element.height
+ };
+ break;
+
+ case bottom:
+ offsets = {
+ x: commonX,
+ y: reference.y + reference.height
+ };
+ break;
+
+ case right:
+ offsets = {
+ x: reference.x + reference.width,
+ y: commonY
+ };
+ break;
+
+ case left:
+ offsets = {
+ x: reference.x - element.width,
+ y: commonY
+ };
+ break;
+
+ default:
+ offsets = {
+ x: reference.x,
+ y: reference.y
+ };
+ }
+
+ var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;
+
+ if (mainAxis != null) {
+ var len = mainAxis === 'y' ? 'height' : 'width';
+
+ switch (variation) {
+ case start:
+ offsets[mainAxis] = Math.floor(offsets[mainAxis]) - Math.floor(reference[len] / 2 - element[len] / 2);
+ break;
+
+ case end:
+ offsets[mainAxis] = Math.floor(offsets[mainAxis]) + Math.ceil(reference[len] / 2 - element[len] / 2);
+ break;
+ }
+ }
+
+ return offsets;
+ }
+
+ function getFreshSideObject() {
+ return {
+ top: 0,
+ right: 0,
+ bottom: 0,
+ left: 0
+ };
+ }
+
+ function mergePaddingObject(paddingObject) {
+ return Object.assign(Object.assign({}, getFreshSideObject()), paddingObject);
+ }
+
+ function expandToHashMap(value, keys) {
+ return keys.reduce(function (hashMap, key) {
+ hashMap[key] = value;
+ return hashMap;
+ }, {});
+ }
+
+ function detectOverflow(state, options) {
+ if (options === void 0) {
+ options = {};
+ }
+
+ var _options = options,
+ _options$placement = _options.placement,
+ placement = _options$placement === void 0 ? state.placement : _options$placement,
+ _options$boundary = _options.boundary,
+ boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,
+ _options$rootBoundary = _options.rootBoundary,
+ rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,
+ _options$elementConte = _options.elementContext,
+ elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,
+ _options$altBoundary = _options.altBoundary,
+ altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,
+ _options$padding = _options.padding,
+ padding = _options$padding === void 0 ? 0 : _options$padding;
+ var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+ var altContext = elementContext === popper ? reference : popper;
+ var referenceElement = state.elements.reference;
+ var popperRect = state.rects.popper;
+ var element = state.elements[altBoundary ? altContext : elementContext];
+ var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary);
+ var referenceClientRect = getBoundingClientRect(referenceElement);
+ var popperOffsets = computeOffsets({
+ reference: referenceClientRect,
+ element: popperRect,
+ strategy: 'absolute',
+ placement: placement
+ });
+ var popperClientRect = rectToClientRect(Object.assign(Object.assign({}, popperRect), popperOffsets));
+ var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect
+ // 0 or negative = within the clipping rect
+
+ var overflowOffsets = {
+ top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
+ bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,
+ left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
+ right: elementClientRect.right - clippingClientRect.right + paddingObject.right
+ };
+ var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element
+
+ if (elementContext === popper && offsetData) {
+ var offset = offsetData[placement];
+ Object.keys(overflowOffsets).forEach(function (key) {
+ var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
+ var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
+ overflowOffsets[key] += offset[axis] * multiply;
+ });
+ }
+
+ return overflowOffsets;
+ }
+
+ var INVALID_ELEMENT_ERROR = 'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
+ var INFINITE_LOOP_ERROR = 'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
+ var DEFAULT_OPTIONS = {
+ placement: 'bottom',
+ modifiers: [],
+ strategy: 'absolute'
+ };
+
+ function areValidElements() {
+ for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+ args[_key] = arguments[_key];
+ }
+
+ return !args.some(function (element) {
+ return !(element && typeof element.getBoundingClientRect === 'function');
+ });
+ }
+
+ function popperGenerator(generatorOptions) {
+ if (generatorOptions === void 0) {
+ generatorOptions = {};
+ }
+
+ var _generatorOptions = generatorOptions,
+ _generatorOptions$def = _generatorOptions.defaultModifiers,
+ defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
+ _generatorOptions$def2 = _generatorOptions.defaultOptions,
+ defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
+ return function createPopper(reference, popper, options) {
+ if (options === void 0) {
+ options = defaultOptions;
+ }
+
+ var state = {
+ placement: 'bottom',
+ orderedModifiers: [],
+ options: Object.assign(Object.assign({}, DEFAULT_OPTIONS), defaultOptions),
+ modifiersData: {},
+ elements: {
+ reference: reference,
+ popper: popper
+ },
+ attributes: {},
+ styles: {}
+ };
+ var effectCleanupFns = [];
+ var isDestroyed = false;
+ var instance = {
+ state: state,
+ setOptions: function setOptions(options) {
+ cleanupModifierEffects();
+ state.options = Object.assign(Object.assign(Object.assign({}, defaultOptions), state.options), options);
+ state.scrollParents = {
+ reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
+ popper: listScrollParents(popper)
+ }; // Orders the modifiers based on their dependencies and `phase`
+ // properties
+
+ var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
+
+ state.orderedModifiers = orderedModifiers.filter(function (m) {
+ return m.enabled;
+ }); // Validate the provided modifiers so that the consumer will get warned
+ // if one of the modifiers is invalid for any reason
+
+ {
+ var modifiers = uniqueBy([].concat(orderedModifiers, state.options.modifiers), function (_ref) {
+ var name = _ref.name;
+ return name;
+ });
+ validateModifiers(modifiers);
+
+ if (getBasePlacement(state.options.placement) === auto) {
+ var flipModifier = state.orderedModifiers.find(function (_ref2) {
+ var name = _ref2.name;
+ return name === 'flip';
+ });
+
+ if (!flipModifier) {
+ console.error(['Popper: "auto" placements require the "flip" modifier be', 'present and enabled to work.'].join(' '));
+ }
+ }
+
+ var _getComputedStyle = getComputedStyle(popper),
+ marginTop = _getComputedStyle.marginTop,
+ marginRight = _getComputedStyle.marginRight,
+ marginBottom = _getComputedStyle.marginBottom,
+ marginLeft = _getComputedStyle.marginLeft; // We no longer take into account `margins` on the popper, and it can
+ // cause bugs with positioning, so we'll warn the consumer
+
+
+ if ([marginTop, marginRight, marginBottom, marginLeft].some(function (margin) {
+ return parseFloat(margin);
+ })) {
+ console.warn(['Popper: CSS "margin" styles cannot be used to apply padding', 'between the popper and its reference element or boundary.', 'To replicate margin, use the `offset` modifier, as well as', 'the `padding` option in the `preventOverflow` and `flip`', 'modifiers.'].join(' '));
+ }
+ }
+
+ runModifierEffects();
+ return instance.update();
+ },
+ // Sync update – it will always be executed, even if not necessary. This
+ // is useful for low frequency updates where sync behavior simplifies the
+ // logic.
+ // For high frequency updates (e.g. `resize` and `scroll` events), always
+ // prefer the async Popper#update method
+ forceUpdate: function forceUpdate() {
+ if (isDestroyed) {
+ return;
+ }
+
+ var _state$elements = state.elements,
+ reference = _state$elements.reference,
+ popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
+ // anymore
+
+ if (!areValidElements(reference, popper)) {
+ {
+ console.error(INVALID_ELEMENT_ERROR);
+ }
+
+ return;
+ } // Store the reference and popper rects to be read by modifiers
+
+
+ state.rects = {
+ reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
+ popper: getLayoutRect(popper)
+ }; // Modifiers have the ability to reset the current update cycle. The
+ // most common use case for this is the `flip` modifier changing the
+ // placement, which then needs to re-run all the modifiers, because the
+ // logic was previously ran for the previous placement and is therefore
+ // stale/incorrect
+
+ state.reset = false;
+ state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
+ // is filled with the initial data specified by the modifier. This means
+ // it doesn't persist and is fresh on each update.
+ // To ensure persistent data, use `${name}#persistent`
+
+ state.orderedModifiers.forEach(function (modifier) {
+ return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
+ });
+ var __debug_loops__ = 0;
+
+ for (var index = 0; index < state.orderedModifiers.length; index++) {
+ {
+ __debug_loops__ += 1;
+
+ if (__debug_loops__ > 100) {
+ console.error(INFINITE_LOOP_ERROR);
+ break;
+ }
+ }
+
+ if (state.reset === true) {
+ state.reset = false;
+ index = -1;
+ continue;
+ }
+
+ var _state$orderedModifie = state.orderedModifiers[index],
+ fn = _state$orderedModifie.fn,
+ _state$orderedModifie2 = _state$orderedModifie.options,
+ _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
+ name = _state$orderedModifie.name;
+
+ if (typeof fn === 'function') {
+ state = fn({
+ state: state,
+ options: _options,
+ name: name,
+ instance: instance
+ }) || state;
+ }
+ }
+ },
+ // Async and optimistically optimized update – it will not be executed if
+ // not necessary (debounced to run at most once-per-tick)
+ update: debounce(function () {
+ return new Promise(function (resolve) {
+ instance.forceUpdate();
+ resolve(state);
+ });
+ }),
+ destroy: function destroy() {
+ cleanupModifierEffects();
+ isDestroyed = true;
+ }
+ };
+
+ if (!areValidElements(reference, popper)) {
+ {
+ console.error(INVALID_ELEMENT_ERROR);
+ }
+
+ return instance;
+ }
+
+ instance.setOptions(options).then(function (state) {
+ if (!isDestroyed && options.onFirstUpdate) {
+ options.onFirstUpdate(state);
+ }
+ }); // Modifiers have the ability to execute arbitrary code before the first
+ // update cycle runs. They will be executed in the same order as the update
+ // cycle. This is useful when a modifier adds some persistent data that
+ // other modifiers need to use, but the modifier is run after the dependent
+ // one.
+
+ function runModifierEffects() {
+ state.orderedModifiers.forEach(function (_ref3) {
+ var name = _ref3.name,
+ _ref3$options = _ref3.options,
+ options = _ref3$options === void 0 ? {} : _ref3$options,
+ effect = _ref3.effect;
+
+ if (typeof effect === 'function') {
+ var cleanupFn = effect({
+ state: state,
+ name: name,
+ instance: instance,
+ options: options
+ });
+
+ var noopFn = function noopFn() {};
+
+ effectCleanupFns.push(cleanupFn || noopFn);
+ }
+ });
+ }
+
+ function cleanupModifierEffects() {
+ effectCleanupFns.forEach(function (fn) {
+ return fn();
+ });
+ effectCleanupFns = [];
+ }
+
+ return instance;
+ };
+ }
+
+ var passive = {
+ passive: true
+ };
+
+ function effect(_ref) {
+ var state = _ref.state,
+ instance = _ref.instance,
+ options = _ref.options;
+ var _options$scroll = options.scroll,
+ scroll = _options$scroll === void 0 ? true : _options$scroll,
+ _options$resize = options.resize,
+ resize = _options$resize === void 0 ? true : _options$resize;
+ var window = getWindow(state.elements.popper);
+ var scrollParents = [].concat(state.scrollParents.reference, state.scrollParents.popper);
+
+ if (scroll) {
+ scrollParents.forEach(function (scrollParent) {
+ scrollParent.addEventListener('scroll', instance.update, passive);
+ });
+ }
+
+ if (resize) {
+ window.addEventListener('resize', instance.update, passive);
+ }
+
+ return function () {
+ if (scroll) {
+ scrollParents.forEach(function (scrollParent) {
+ scrollParent.removeEventListener('scroll', instance.update, passive);
+ });
+ }
+
+ if (resize) {
+ window.removeEventListener('resize', instance.update, passive);
+ }
+ };
+ } // eslint-disable-next-line import/no-unused-modules
+
+
+ var eventListeners = {
+ name: 'eventListeners',
+ enabled: true,
+ phase: 'write',
+ fn: function fn() {},
+ effect: effect,
+ data: {}
+ };
+
+ function popperOffsets(_ref) {
+ var state = _ref.state,
+ name = _ref.name;
+ // Offsets are the actual position the popper needs to have to be
+ // properly positioned near its reference element
+ // This is the most basic placement, and will be adjusted by
+ // the modifiers in the next step
+ state.modifiersData[name] = computeOffsets({
+ reference: state.rects.reference,
+ element: state.rects.popper,
+ strategy: 'absolute',
+ placement: state.placement
+ });
+ } // eslint-disable-next-line import/no-unused-modules
+
+
+ var popperOffsets$1 = {
+ name: 'popperOffsets',
+ enabled: true,
+ phase: 'read',
+ fn: popperOffsets,
+ data: {}
+ };
+
+ var unsetSides = {
+ top: 'auto',
+ right: 'auto',
+ bottom: 'auto',
+ left: 'auto'
+ }; // Round the offsets to the nearest suitable subpixel based on the DPR.
+ // Zooming can change the DPR, but it seems to report a value that will
+ // cleanly divide the values into the appropriate subpixels.
+
+ function roundOffsets(_ref) {
+ var x = _ref.x,
+ y = _ref.y;
+ var win = window;
+ var dpr = win.devicePixelRatio || 1;
+ return {
+ x: Math.round(x * dpr) / dpr || 0,
+ y: Math.round(y * dpr) / dpr || 0
+ };
+ }
+
+ function mapToStyles(_ref2) {
+ var _Object$assign2;
+
+ var popper = _ref2.popper,
+ popperRect = _ref2.popperRect,
+ placement = _ref2.placement,
+ offsets = _ref2.offsets,
+ position = _ref2.position,
+ gpuAcceleration = _ref2.gpuAcceleration,
+ adaptive = _ref2.adaptive;
+
+ var _roundOffsets = roundOffsets(offsets),
+ x = _roundOffsets.x,
+ y = _roundOffsets.y;
+
+ var hasX = offsets.hasOwnProperty('x');
+ var hasY = offsets.hasOwnProperty('y');
+ var sideX = left;
+ var sideY = top;
+ var win = window;
+
+ if (adaptive) {
+ var offsetParent = getOffsetParent(popper);
+
+ if (offsetParent === getWindow(popper)) {
+ offsetParent = getDocumentElement(popper);
+ } // $FlowFixMe: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it
+
+ /*:: offsetParent = (offsetParent: Element); */
+
+
+ if (placement === top) {
+ sideY = bottom;
+ y -= offsetParent.clientHeight - popperRect.height;
+ y *= gpuAcceleration ? 1 : -1;
+ }
+
+ if (placement === left) {
+ sideX = right;
+ x -= offsetParent.clientWidth - popperRect.width;
+ x *= gpuAcceleration ? 1 : -1;
+ }
+ }
+
+ var commonStyles = Object.assign({
+ position: position
+ }, adaptive && unsetSides);
+
+ if (gpuAcceleration) {
+ var _Object$assign;
+
+ return Object.assign(Object.assign({}, commonStyles), {}, (_Object$assign = {}, _Object$assign[sideY] = hasY ? '0' : '', _Object$assign[sideX] = hasX ? '0' : '', _Object$assign.transform = (win.devicePixelRatio || 1) < 2 ? "translate(" + x + "px, " + y + "px)" : "translate3d(" + x + "px, " + y + "px, 0)", _Object$assign));
+ }
+
+ return Object.assign(Object.assign({}, commonStyles), {}, (_Object$assign2 = {}, _Object$assign2[sideY] = hasY ? y + "px" : '', _Object$assign2[sideX] = hasX ? x + "px" : '', _Object$assign2.transform = '', _Object$assign2));
+ }
+
+ function computeStyles(_ref3) {
+ var state = _ref3.state,
+ options = _ref3.options;
+ var _options$gpuAccelerat = options.gpuAcceleration,
+ gpuAcceleration = _options$gpuAccelerat === void 0 ? true : _options$gpuAccelerat,
+ _options$adaptive = options.adaptive,
+ adaptive = _options$adaptive === void 0 ? true : _options$adaptive;
+
+ {
+ var transitionProperty = getComputedStyle(state.elements.popper).transitionProperty || '';
+
+ if (adaptive && ['transform', 'top', 'right', 'bottom', 'left'].some(function (property) {
+ return transitionProperty.indexOf(property) >= 0;
+ })) {
+ console.warn(['Popper: Detected CSS transitions on at least one of the following', 'CSS properties: "transform", "top", "right", "bottom", "left".', '\n\n', 'Disable the "computeStyles" modifier\'s `adaptive` option to allow', 'for smooth transitions, or remove these properties from the CSS', 'transition declaration on the popper element if only transitioning', 'opacity or background-color for example.', '\n\n', 'We recommend using the popper element as a wrapper around an inner', 'element that can have any CSS property transitioned for animations.'].join(' '));
+ }
+ }
+
+ var commonStyles = {
+ placement: getBasePlacement(state.placement),
+ popper: state.elements.popper,
+ popperRect: state.rects.popper,
+ gpuAcceleration: gpuAcceleration
+ };
+
+ if (state.modifiersData.popperOffsets != null) {
+ state.styles.popper = Object.assign(Object.assign({}, state.styles.popper), mapToStyles(Object.assign(Object.assign({}, commonStyles), {}, {
+ offsets: state.modifiersData.popperOffsets,
+ position: state.options.strategy,
+ adaptive: adaptive
+ })));
+ }
+
+ if (state.modifiersData.arrow != null) {
+ state.styles.arrow = Object.assign(Object.assign({}, state.styles.arrow), mapToStyles(Object.assign(Object.assign({}, commonStyles), {}, {
+ offsets: state.modifiersData.arrow,
+ position: 'absolute',
+ adaptive: false
+ })));
+ }
+
+ state.attributes.popper = Object.assign(Object.assign({}, state.attributes.popper), {}, {
+ 'data-popper-placement': state.placement
+ });
+ } // eslint-disable-next-line import/no-unused-modules
+
+
+ var computeStyles$1 = {
+ name: 'computeStyles',
+ enabled: true,
+ phase: 'beforeWrite',
+ fn: computeStyles,
+ data: {}
+ };
+
+ // and applies them to the HTMLElements such as popper and arrow
+
+ function applyStyles(_ref) {
+ var state = _ref.state;
+ Object.keys(state.elements).forEach(function (name) {
+ var style = state.styles[name] || {};
+ var attributes = state.attributes[name] || {};
+ var element = state.elements[name]; // arrow is optional + virtual elements
+
+ if (!isHTMLElement(element) || !getNodeName(element)) {
+ return;
+ } // Flow doesn't support to extend this property, but it's the most
+ // effective way to apply styles to an HTMLElement
+ // $FlowFixMe
+
+
+ Object.assign(element.style, style);
+ Object.keys(attributes).forEach(function (name) {
+ var value = attributes[name];
+
+ if (value === false) {
+ element.removeAttribute(name);
+ } else {
+ element.setAttribute(name, value === true ? '' : value);
+ }
+ });
+ });
+ }
+
+ function effect$1(_ref2) {
+ var state = _ref2.state;
+ var initialStyles = {
+ popper: {
+ position: state.options.strategy,
+ left: '0',
+ top: '0',
+ margin: '0'
+ },
+ arrow: {
+ position: 'absolute'
+ },
+ reference: {}
+ };
+ Object.assign(state.elements.popper.style, initialStyles.popper);
+
+ if (state.elements.arrow) {
+ Object.assign(state.elements.arrow.style, initialStyles.arrow);
+ }
+
+ return function () {
+ Object.keys(state.elements).forEach(function (name) {
+ var element = state.elements[name];
+ var attributes = state.attributes[name] || {};
+ var styleProperties = Object.keys(state.styles.hasOwnProperty(name) ? state.styles[name] : initialStyles[name]); // Set all values to an empty string to unset them
+
+ var style = styleProperties.reduce(function (style, property) {
+ style[property] = '';
+ return style;
+ }, {}); // arrow is optional + virtual elements
+
+ if (!isHTMLElement(element) || !getNodeName(element)) {
+ return;
+ } // Flow doesn't support to extend this property, but it's the most
+ // effective way to apply styles to an HTMLElement
+ // $FlowFixMe
+
+
+ Object.assign(element.style, style);
+ Object.keys(attributes).forEach(function (attribute) {
+ element.removeAttribute(attribute);
+ });
+ });
+ };
+ } // eslint-disable-next-line import/no-unused-modules
+
+
+ var applyStyles$1 = {
+ name: 'applyStyles',
+ enabled: true,
+ phase: 'write',
+ fn: applyStyles,
+ effect: effect$1,
+ requires: ['computeStyles']
+ };
+
+ function distanceAndSkiddingToXY(placement, rects, offset) {
+ var basePlacement = getBasePlacement(placement);
+ var invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;
+
+ var _ref = typeof offset === 'function' ? offset(Object.assign(Object.assign({}, rects), {}, {
+ placement: placement
+ })) : offset,
+ skidding = _ref[0],
+ distance = _ref[1];
+
+ skidding = skidding || 0;
+ distance = (distance || 0) * invertDistance;
+ return [left, right].indexOf(basePlacement) >= 0 ? {
+ x: distance,
+ y: skidding
+ } : {
+ x: skidding,
+ y: distance
+ };
+ }
+
+ function offset(_ref2) {
+ var state = _ref2.state,
+ options = _ref2.options,
+ name = _ref2.name;
+ var _options$offset = options.offset,
+ offset = _options$offset === void 0 ? [0, 0] : _options$offset;
+ var data = placements.reduce(function (acc, placement) {
+ acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);
+ return acc;
+ }, {});
+ var _data$state$placement = data[state.placement],
+ x = _data$state$placement.x,
+ y = _data$state$placement.y;
+
+ if (state.modifiersData.popperOffsets != null) {
+ state.modifiersData.popperOffsets.x += x;
+ state.modifiersData.popperOffsets.y += y;
+ }
+
+ state.modifiersData[name] = data;
+ } // eslint-disable-next-line import/no-unused-modules
+
+
+ var offset$1 = {
+ name: 'offset',
+ enabled: true,
+ phase: 'main',
+ requires: ['popperOffsets'],
+ fn: offset
+ };
+
+ var hash = {
+ left: 'right',
+ right: 'left',
+ bottom: 'top',
+ top: 'bottom'
+ };
+ function getOppositePlacement(placement) {
+ return placement.replace(/left|right|bottom|top/g, function (matched) {
+ return hash[matched];
+ });
+ }
+
+ var hash$1 = {
+ start: 'end',
+ end: 'start'
+ };
+ function getOppositeVariationPlacement(placement) {
+ return placement.replace(/start|end/g, function (matched) {
+ return hash$1[matched];
+ });
+ }
+
+ /*:: type OverflowsMap = { [ComputedPlacement]: number }; */
+
+ /*;; type OverflowsMap = { [key in ComputedPlacement]: number }; */
+ function computeAutoPlacement(state, options) {
+ if (options === void 0) {
+ options = {};
+ }
+
+ var _options = options,
+ placement = _options.placement,
+ boundary = _options.boundary,
+ rootBoundary = _options.rootBoundary,
+ padding = _options.padding,
+ flipVariations = _options.flipVariations,
+ _options$allowedAutoP = _options.allowedAutoPlacements,
+ allowedAutoPlacements = _options$allowedAutoP === void 0 ? placements : _options$allowedAutoP;
+ var variation = getVariation(placement);
+ var placements$1 = variation ? flipVariations ? variationPlacements : variationPlacements.filter(function (placement) {
+ return getVariation(placement) === variation;
+ }) : basePlacements; // $FlowFixMe
+
+ var allowedPlacements = placements$1.filter(function (placement) {
+ return allowedAutoPlacements.indexOf(placement) >= 0;
+ });
+
+ if (allowedPlacements.length === 0) {
+ allowedPlacements = placements$1;
+
+ {
+ console.error(['Popper: The `allowedAutoPlacements` option did not allow any', 'placements. Ensure the `placement` option matches the variation', 'of the allowed placements.', 'For example, "auto" cannot be used to allow "bottom-start".', 'Use "auto-start" instead.'].join(' '));
+ }
+ } // $FlowFixMe: Flow seems to have problems with two array unions...
+
+
+ var overflows = allowedPlacements.reduce(function (acc, placement) {
+ acc[placement] = detectOverflow(state, {
+ placement: placement,
+ boundary: boundary,
+ rootBoundary: rootBoundary,
+ padding: padding
+ })[getBasePlacement(placement)];
+ return acc;
+ }, {});
+ return Object.keys(overflows).sort(function (a, b) {
+ return overflows[a] - overflows[b];
+ });
+ }
+
+ function getExpandedFallbackPlacements(placement) {
+ if (getBasePlacement(placement) === auto) {
+ return [];
+ }
+
+ var oppositePlacement = getOppositePlacement(placement);
+ return [getOppositeVariationPlacement(placement), oppositePlacement, getOppositeVariationPlacement(oppositePlacement)];
+ }
+
+ function flip(_ref) {
+ var state = _ref.state,
+ options = _ref.options,
+ name = _ref.name;
+
+ if (state.modifiersData[name]._skip) {
+ return;
+ }
+
+ var _options$mainAxis = options.mainAxis,
+ checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
+ _options$altAxis = options.altAxis,
+ checkAltAxis = _options$altAxis === void 0 ? true : _options$altAxis,
+ specifiedFallbackPlacements = options.fallbackPlacements,
+ padding = options.padding,
+ boundary = options.boundary,
+ rootBoundary = options.rootBoundary,
+ altBoundary = options.altBoundary,
+ _options$flipVariatio = options.flipVariations,
+ flipVariations = _options$flipVariatio === void 0 ? true : _options$flipVariatio,
+ allowedAutoPlacements = options.allowedAutoPlacements;
+ var preferredPlacement = state.options.placement;
+ var basePlacement = getBasePlacement(preferredPlacement);
+ var isBasePlacement = basePlacement === preferredPlacement;
+ var fallbackPlacements = specifiedFallbackPlacements || (isBasePlacement || !flipVariations ? [getOppositePlacement(preferredPlacement)] : getExpandedFallbackPlacements(preferredPlacement));
+ var placements = [preferredPlacement].concat(fallbackPlacements).reduce(function (acc, placement) {
+ return acc.concat(getBasePlacement(placement) === auto ? computeAutoPlacement(state, {
+ placement: placement,
+ boundary: boundary,
+ rootBoundary: rootBoundary,
+ padding: padding,
+ flipVariations: flipVariations,
+ allowedAutoPlacements: allowedAutoPlacements
+ }) : placement);
+ }, []);
+ var referenceRect = state.rects.reference;
+ var popperRect = state.rects.popper;
+ var checksMap = new Map();
+ var makeFallbackChecks = true;
+ var firstFittingPlacement = placements[0];
+
+ for (var i = 0; i < placements.length; i++) {
+ var placement = placements[i];
+
+ var _basePlacement = getBasePlacement(placement);
+
+ var isStartVariation = getVariation(placement) === start;
+ var isVertical = [top, bottom].indexOf(_basePlacement) >= 0;
+ var len = isVertical ? 'width' : 'height';
+ var overflow = detectOverflow(state, {
+ placement: placement,
+ boundary: boundary,
+ rootBoundary: rootBoundary,
+ altBoundary: altBoundary,
+ padding: padding
+ });
+ var mainVariationSide = isVertical ? isStartVariation ? right : left : isStartVariation ? bottom : top;
+
+ if (referenceRect[len] > popperRect[len]) {
+ mainVariationSide = getOppositePlacement(mainVariationSide);
+ }
+
+ var altVariationSide = getOppositePlacement(mainVariationSide);
+ var checks = [];
+
+ if (checkMainAxis) {
+ checks.push(overflow[_basePlacement] <= 0);
+ }
+
+ if (checkAltAxis) {
+ checks.push(overflow[mainVariationSide] <= 0, overflow[altVariationSide] <= 0);
+ }
+
+ if (checks.every(function (check) {
+ return check;
+ })) {
+ firstFittingPlacement = placement;
+ makeFallbackChecks = false;
+ break;
+ }
+
+ checksMap.set(placement, checks);
+ }
+
+ if (makeFallbackChecks) {
+ // `2` may be desired in some cases – research later
+ var numberOfChecks = flipVariations ? 3 : 1;
+
+ var _loop = function _loop(_i) {
+ var fittingPlacement = placements.find(function (placement) {
+ var checks = checksMap.get(placement);
+
+ if (checks) {
+ return checks.slice(0, _i).every(function (check) {
+ return check;
+ });
+ }
+ });
+
+ if (fittingPlacement) {
+ firstFittingPlacement = fittingPlacement;
+ return "break";
+ }
+ };
+
+ for (var _i = numberOfChecks; _i > 0; _i--) {
+ var _ret = _loop(_i);
+
+ if (_ret === "break") break;
+ }
+ }
+
+ if (state.placement !== firstFittingPlacement) {
+ state.modifiersData[name]._skip = true;
+ state.placement = firstFittingPlacement;
+ state.reset = true;
+ }
+ } // eslint-disable-next-line import/no-unused-modules
+
+
+ var flip$1 = {
+ name: 'flip',
+ enabled: true,
+ phase: 'main',
+ fn: flip,
+ requiresIfExists: ['offset'],
+ data: {
+ _skip: false
+ }
+ };
+
+ function getAltAxis(axis) {
+ return axis === 'x' ? 'y' : 'x';
+ }
+
+ function within(min, value, max) {
+ return Math.max(min, Math.min(value, max));
+ }
+
+ function preventOverflow(_ref) {
+ var state = _ref.state,
+ options = _ref.options,
+ name = _ref.name;
+ var _options$mainAxis = options.mainAxis,
+ checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
+ _options$altAxis = options.altAxis,
+ checkAltAxis = _options$altAxis === void 0 ? false : _options$altAxis,
+ boundary = options.boundary,
+ rootBoundary = options.rootBoundary,
+ altBoundary = options.altBoundary,
+ padding = options.padding,
+ _options$tether = options.tether,
+ tether = _options$tether === void 0 ? true : _options$tether,
+ _options$tetherOffset = options.tetherOffset,
+ tetherOffset = _options$tetherOffset === void 0 ? 0 : _options$tetherOffset;
+ var overflow = detectOverflow(state, {
+ boundary: boundary,
+ rootBoundary: rootBoundary,
+ padding: padding,
+ altBoundary: altBoundary
+ });
+ var basePlacement = getBasePlacement(state.placement);
+ var variation = getVariation(state.placement);
+ var isBasePlacement = !variation;
+ var mainAxis = getMainAxisFromPlacement(basePlacement);
+ var altAxis = getAltAxis(mainAxis);
+ var popperOffsets = state.modifiersData.popperOffsets;
+ var referenceRect = state.rects.reference;
+ var popperRect = state.rects.popper;
+ var tetherOffsetValue = typeof tetherOffset === 'function' ? tetherOffset(Object.assign(Object.assign({}, state.rects), {}, {
+ placement: state.placement
+ })) : tetherOffset;
+ var data = {
+ x: 0,
+ y: 0
+ };
+
+ if (!popperOffsets) {
+ return;
+ }
+
+ if (checkMainAxis) {
+ var mainSide = mainAxis === 'y' ? top : left;
+ var altSide = mainAxis === 'y' ? bottom : right;
+ var len = mainAxis === 'y' ? 'height' : 'width';
+ var offset = popperOffsets[mainAxis];
+ var min = popperOffsets[mainAxis] + overflow[mainSide];
+ var max = popperOffsets[mainAxis] - overflow[altSide];
+ var additive = tether ? -popperRect[len] / 2 : 0;
+ var minLen = variation === start ? referenceRect[len] : popperRect[len];
+ var maxLen = variation === start ? -popperRect[len] : -referenceRect[len]; // We need to include the arrow in the calculation so the arrow doesn't go
+ // outside the reference bounds
+
+ var arrowElement = state.elements.arrow;
+ var arrowRect = tether && arrowElement ? getLayoutRect(arrowElement) : {
+ width: 0,
+ height: 0
+ };
+ var arrowPaddingObject = state.modifiersData['arrow#persistent'] ? state.modifiersData['arrow#persistent'].padding : getFreshSideObject();
+ var arrowPaddingMin = arrowPaddingObject[mainSide];
+ var arrowPaddingMax = arrowPaddingObject[altSide]; // If the reference length is smaller than the arrow length, we don't want
+ // to include its full size in the calculation. If the reference is small
+ // and near the edge of a boundary, the popper can overflow even if the
+ // reference is not overflowing as well (e.g. virtual elements with no
+ // width or height)
+
+ var arrowLen = within(0, referenceRect[len], arrowRect[len]);
+ var minOffset = isBasePlacement ? referenceRect[len] / 2 - additive - arrowLen - arrowPaddingMin - tetherOffsetValue : minLen - arrowLen - arrowPaddingMin - tetherOffsetValue;
+ var maxOffset = isBasePlacement ? -referenceRect[len] / 2 + additive + arrowLen + arrowPaddingMax + tetherOffsetValue : maxLen + arrowLen + arrowPaddingMax + tetherOffsetValue;
+ var arrowOffsetParent = state.elements.arrow && getOffsetParent(state.elements.arrow);
+ var clientOffset = arrowOffsetParent ? mainAxis === 'y' ? arrowOffsetParent.clientTop || 0 : arrowOffsetParent.clientLeft || 0 : 0;
+ var offsetModifierValue = state.modifiersData.offset ? state.modifiersData.offset[state.placement][mainAxis] : 0;
+ var tetherMin = popperOffsets[mainAxis] + minOffset - offsetModifierValue - clientOffset;
+ var tetherMax = popperOffsets[mainAxis] + maxOffset - offsetModifierValue;
+ var preventedOffset = within(tether ? Math.min(min, tetherMin) : min, offset, tether ? Math.max(max, tetherMax) : max);
+ popperOffsets[mainAxis] = preventedOffset;
+ data[mainAxis] = preventedOffset - offset;
+ }
+
+ if (checkAltAxis) {
+ var _mainSide = mainAxis === 'x' ? top : left;
+
+ var _altSide = mainAxis === 'x' ? bottom : right;
+
+ var _offset = popperOffsets[altAxis];
+
+ var _min = _offset + overflow[_mainSide];
+
+ var _max = _offset - overflow[_altSide];
+
+ var _preventedOffset = within(_min, _offset, _max);
+
+ popperOffsets[altAxis] = _preventedOffset;
+ data[altAxis] = _preventedOffset - _offset;
+ }
+
+ state.modifiersData[name] = data;
+ } // eslint-disable-next-line import/no-unused-modules
+
+
+ var preventOverflow$1 = {
+ name: 'preventOverflow',
+ enabled: true,
+ phase: 'main',
+ fn: preventOverflow,
+ requiresIfExists: ['offset']
+ };
+
+ function arrow(_ref) {
+ var _state$modifiersData$;
+
+ var state = _ref.state,
+ name = _ref.name;
+ var arrowElement = state.elements.arrow;
+ var popperOffsets = state.modifiersData.popperOffsets;
+ var basePlacement = getBasePlacement(state.placement);
+ var axis = getMainAxisFromPlacement(basePlacement);
+ var isVertical = [left, right].indexOf(basePlacement) >= 0;
+ var len = isVertical ? 'height' : 'width';
+
+ if (!arrowElement || !popperOffsets) {
+ return;
+ }
+
+ var paddingObject = state.modifiersData[name + "#persistent"].padding;
+ var arrowRect = getLayoutRect(arrowElement);
+ var minProp = axis === 'y' ? top : left;
+ var maxProp = axis === 'y' ? bottom : right;
+ var endDiff = state.rects.reference[len] + state.rects.reference[axis] - popperOffsets[axis] - state.rects.popper[len];
+ var startDiff = popperOffsets[axis] - state.rects.reference[axis];
+ var arrowOffsetParent = getOffsetParent(arrowElement);
+ var clientSize = arrowOffsetParent ? axis === 'y' ? arrowOffsetParent.clientHeight || 0 : arrowOffsetParent.clientWidth || 0 : 0;
+ var centerToReference = endDiff / 2 - startDiff / 2; // Make sure the arrow doesn't overflow the popper if the center point is
+ // outside of the popper bounds
+
+ var min = paddingObject[minProp];
+ var max = clientSize - arrowRect[len] - paddingObject[maxProp];
+ var center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;
+ var offset = within(min, center, max); // Prevents breaking syntax highlighting...
+
+ var axisProp = axis;
+ state.modifiersData[name] = (_state$modifiersData$ = {}, _state$modifiersData$[axisProp] = offset, _state$modifiersData$.centerOffset = offset - center, _state$modifiersData$);
+ }
+
+ function effect$2(_ref2) {
+ var state = _ref2.state,
+ options = _ref2.options,
+ name = _ref2.name;
+ var _options$element = options.element,
+ arrowElement = _options$element === void 0 ? '[data-popper-arrow]' : _options$element,
+ _options$padding = options.padding,
+ padding = _options$padding === void 0 ? 0 : _options$padding;
+
+ if (arrowElement == null) {
+ return;
+ } // CSS selector
+
+
+ if (typeof arrowElement === 'string') {
+ arrowElement = state.elements.popper.querySelector(arrowElement);
+
+ if (!arrowElement) {
+ return;
+ }
+ }
+
+ {
+ if (!isHTMLElement(arrowElement)) {
+ console.error(['Popper: "arrow" element must be an HTMLElement (not an SVGElement).', 'To use an SVG arrow, wrap it in an HTMLElement that will be used as', 'the arrow.'].join(' '));
+ }
+ }
+
+ if (!contains(state.elements.popper, arrowElement)) {
+ {
+ console.error(['Popper: "arrow" modifier\'s `element` must be a child of the popper', 'element.'].join(' '));
+ }
+
+ return;
+ }
+
+ state.elements.arrow = arrowElement;
+ state.modifiersData[name + "#persistent"] = {
+ padding: mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements))
+ };
+ } // eslint-disable-next-line import/no-unused-modules
+
+
+ var arrow$1 = {
+ name: 'arrow',
+ enabled: true,
+ phase: 'main',
+ fn: arrow,
+ effect: effect$2,
+ requires: ['popperOffsets'],
+ requiresIfExists: ['preventOverflow']
+ };
+
+ function getSideOffsets(overflow, rect, preventedOffsets) {
+ if (preventedOffsets === void 0) {
+ preventedOffsets = {
+ x: 0,
+ y: 0
+ };
+ }
+
+ return {
+ top: overflow.top - rect.height - preventedOffsets.y,
+ right: overflow.right - rect.width + preventedOffsets.x,
+ bottom: overflow.bottom - rect.height + preventedOffsets.y,
+ left: overflow.left - rect.width - preventedOffsets.x
+ };
+ }
+
+ function isAnySideFullyClipped(overflow) {
+ return [top, right, bottom, left].some(function (side) {
+ return overflow[side] >= 0;
+ });
+ }
+
+ function hide(_ref) {
+ var state = _ref.state,
+ name = _ref.name;
+ var referenceRect = state.rects.reference;
+ var popperRect = state.rects.popper;
+ var preventedOffsets = state.modifiersData.preventOverflow;
+ var referenceOverflow = detectOverflow(state, {
+ elementContext: 'reference'
+ });
+ var popperAltOverflow = detectOverflow(state, {
+ altBoundary: true
+ });
+ var referenceClippingOffsets = getSideOffsets(referenceOverflow, referenceRect);
+ var popperEscapeOffsets = getSideOffsets(popperAltOverflow, popperRect, preventedOffsets);
+ var isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);
+ var hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);
+ state.modifiersData[name] = {
+ referenceClippingOffsets: referenceClippingOffsets,
+ popperEscapeOffsets: popperEscapeOffsets,
+ isReferenceHidden: isReferenceHidden,
+ hasPopperEscaped: hasPopperEscaped
+ };
+ state.attributes.popper = Object.assign(Object.assign({}, state.attributes.popper), {}, {
+ 'data-popper-reference-hidden': isReferenceHidden,
+ 'data-popper-escaped': hasPopperEscaped
+ });
+ } // eslint-disable-next-line import/no-unused-modules
+
+
+ var hide$1 = {
+ name: 'hide',
+ enabled: true,
+ phase: 'main',
+ requiresIfExists: ['preventOverflow'],
+ fn: hide
+ };
+
+ var defaultModifiers = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1];
+ var createPopper = /*#__PURE__*/popperGenerator({
+ defaultModifiers: defaultModifiers
+ }); // eslint-disable-next-line import/no-unused-modules
+
+ var defaultModifiers$1 = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1, offset$1, flip$1, preventOverflow$1, arrow$1, hide$1];
+ var createPopper$1 = /*#__PURE__*/popperGenerator({
+ defaultModifiers: defaultModifiers$1
+ }); // eslint-disable-next-line import/no-unused-modules
+
+ exports.applyStyles = applyStyles$1;
+ exports.arrow = arrow$1;
+ exports.computeStyles = computeStyles$1;
+ exports.createPopper = createPopper$1;
+ exports.createPopperLite = createPopper;
+ exports.defaultModifiers = defaultModifiers$1;
+ exports.detectOverflow = detectOverflow;
+ exports.eventListeners = eventListeners;
+ exports.flip = flip$1;
+ exports.hide = hide$1;
+ exports.offset = offset$1;
+ exports.popperGenerator = popperGenerator;
+ exports.popperOffsets = popperOffsets$1;
+ exports.preventOverflow = preventOverflow$1;
+
+ Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
+//# sourceMappingURL=popper.js.map