@popperjs/core
Version:
Tooltip and Popover Positioning Engine
1,044 lines (868 loc) • 34.1 kB
JavaScript
/**
* @popperjs/core v2.0.6 - 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;
}
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;
}
/*:: declare function isHTMLElement(node: mixed): boolean %checks(node instanceof
HTMLElement); */
function isHTMLElement(node) {
var OwnElement = getWindow(node).HTMLElement;
return node instanceof OwnElement;
}
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).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;
}
// Composite means it takes into account transforms as well as layout.
function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
if (isFixed === void 0) {
isFixed = false;
}
var documentElement;
var rect = getBoundingClientRect(elementOrVirtualElement);
var scroll = {
scrollLeft: 0,
scrollTop: 0
};
var offsets = {
x: 0,
y: 0
};
if (!isFixed) {
if (getNodeName(offsetParent) !== 'body') {
scroll = getNodeScroll(offsetParent);
}
if (isHTMLElement(offsetParent)) {
offsets = getBoundingClientRect(offsetParent);
offsets.x += offsetParent.clientLeft;
offsets.y += offsetParent.clientTop;
} else if (documentElement = getDocumentElement(offsetParent)) {
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 element.parentNode || // DOM Element detected
// $FlowFixMe: need a better way to handle this...
element.host || // ShadowRoot detected
document.ownerDocument || // Fallback to ownerDocument if available
document.documentElement // Or to documentElement if everything else fails
;
}
function getComputedStyle(element) {
return getWindow(element).getComputedStyle(element);
}
function getScrollParent(node) {
if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
// $FlowFixMe: assume body is always available
return node.ownerDocument.body;
}
if (isHTMLElement(node)) {
// Firefox wants us to check `-x` and `-y` variations as well
var _getComputedStyle = getComputedStyle(node),
overflow = _getComputedStyle.overflow,
overflowX = _getComputedStyle.overflowX,
overflowY = _getComputedStyle.overflowY;
if (/auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX)) {
return node;
}
}
return getScrollParent(getParentNode(node));
}
function listScrollParents(element, list) {
if (list === void 0) {
list = [];
}
var scrollParent = getScrollParent(element);
var isBody = getNodeName(scrollParent) === 'body';
var target = isBody ? getWindow(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;
}
var isFirefox = function isFirefox() {
return typeof window.InstallTrigger !== 'undefined';
};
function getTrueOffsetParent(element) {
var offsetParent;
if (!isHTMLElement(element) || !(offsetParent = element.offsetParent) || // https://github.com/popperjs/popper-core/issues/837
isFirefox() && getComputedStyle(offsetParent).position === 'fixed') {
return null;
}
return offsetParent;
}
function getOffsetParent(element) {
var window = getWindow(element);
var offsetParent = getTrueOffsetParent(element); // Find the nearest non-table offsetParent
while (offsetParent && isTableElement(offsetParent)) {
offsetParent = getTrueOffsetParent(offsetParent);
}
if (offsetParent && getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static') {
return window;
}
return offsetParent || window;
}
var top = 'top';
var bottom = 'bottom';
var right = 'right';
var left = 'left';
var auto = 'auto';
var start = 'start';
var end = 'end';
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({}, existing, {}, current, {
options: Object.assign({}, existing.options, {}, current.options),
data: 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];
});
}
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({}, 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({}, defaultOptions, {}, state.options, {}, options);
state.scrollParents = {
reference: isElement(reference) ? listScrollParents(reference) : [],
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);
}
};
}
var eventListeners = {
name: 'eventListeners',
enabled: true,
phase: 'write',
fn: function fn() {},
effect: effect,
data: {}
};
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 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
});
}
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({}, 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$assign));
}
return Object.assign({}, commonStyles, (_Object$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 _getComputedStyle = getComputedStyle(state.elements.popper),
transitionProperty = _getComputedStyle.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
}; // popper offsets are always available
state.styles.popper = Object.assign({}, state.styles.popper, {}, mapToStyles(Object.assign({}, commonStyles, {
offsets: state.modifiersData.popperOffsets,
position: state.options.strategy,
adaptive: adaptive
}))); // arrow offsets may not be available
if (state.modifiersData.arrow != null) {
state.styles.arrow = Object.assign({}, state.styles.arrow, {}, mapToStyles(Object.assign({}, commonStyles, {
offsets: state.modifiersData.arrow,
position: 'absolute',
adaptive: false
})));
}
state.attributes.popper = Object.assign({}, state.attributes.popper, {
'data-popper-placement': state.placement
});
}
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: 'absolute',
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);
});
});
};
}
var applyStyles$1 = {
name: 'applyStyles',
enabled: true,
phase: 'write',
fn: applyStyles,
effect: effect$1,
requires: ['computeStyles']
};
var defaultModifiers = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1];
var createPopper =
/*#__PURE__*/
popperGenerator({
defaultModifiers: defaultModifiers
}); // eslint-disable-next-line import/no-unused-modules
exports.createPopper = createPopper;
exports.defaultModifiers = defaultModifiers;
exports.popperGenerator = popperGenerator;
Object.defineProperty(exports, '__esModule', { value: true });
})));
//# sourceMappingURL=popper-lite.js.map