'use strict'; var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; /** * @fileOverview Kickass library to create and place poppers near their reference elements. * @version {{version}} * @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. */ // // Cross module loader // Supported: Node, AMD, Browser globals // ;(function (root, factory) { if (typeof define === 'function' && define.amd) { // AMD. Register as an anonymous module. define(factory); } else if ((typeof module === 'undefined' ? 'undefined' : _typeof(module)) === 'object' && module.exports) { // Node. Does not work with strict CommonJS, but // only CommonJS-like environments that support module.exports, // like Node. module.exports = factory(); } else { // Browser globals (root is window) root.Popper = factory(); } })(undefined, function () { 'use strict'; var root = window; // default options var DEFAULTS = { // placement of the popper placement: 'bottom', gpuAcceleration: true, // shift popper from its origin by the given amount of pixels (can be negative) offset: 0, // the element which will act as boundary of the popper boundariesElement: 'viewport', // amount of pixel used to define a minimum distance between the boundaries and the popper boundariesPadding: 5, // popper will try to prevent overflow following this order, // by default, then, it could overflow on the left and on top of the boundariesElement preventOverflowOrder: ['left', 'right', 'top', 'bottom'], // the behavior used by flip to change the placement of the popper flipBehavior: 'flip', arrowElement: '[x-arrow]', arrowOffset: 0, // list of functions used to modify the offsets before they are applied to the popper modifiers: ['shift', 'offset', 'preventOverflow', 'keepTogether', 'arrow', 'flip', 'applyStyle'], modifiersIgnored: [], forceAbsolute: false }; /** * Create a new Popper.js instance * @constructor Popper * @param {HTMLElement} reference - The reference element used to position the popper * @param {HTMLElement|Object} popper * The HTML element used as popper, or a configuration used to generate the popper. * @param {String} [popper.tagName='div'] The tag name of the generated popper. * @param {Array} [popper.classNames=['popper']] Array of classes to apply to the generated popper. * @param {Array} [popper.attributes] Array of attributes to apply, specify `attr:value` to assign a value to it. * @param {HTMLElement|String} [popper.parent=window.document.body] The parent element, given as HTMLElement or as query string. * @param {String} [popper.content=''] The content of the popper, it can be text, html, or node; if it is not text, set `contentType` to `html` or `node`. * @param {String} [popper.contentType='text'] If `html`, the `content` will be parsed as HTML. If `node`, it will be appended as-is. * @param {String} [popper.arrowTagName='div'] Same as `popper.tagName` but for the arrow element. * @param {Array} [popper.arrowClassNames='popper__arrow'] Same as `popper.classNames` but for the arrow element. * @param {String} [popper.arrowAttributes=['x-arrow']] Same as `popper.attributes` but for the arrow element. * @param {Object} options * @param {String} [options.placement=bottom] * Placement of the popper accepted values: `top(-start, -end), right(-start, -end), bottom(-start, -right), * left(-start, -end)` * * @param {HTMLElement|String} [options.arrowElement='[x-arrow]'] * The DOM Node used as arrow for the popper, or a CSS selector used to get the DOM node. It must be child of * its parent Popper. Popper.js will apply to the given element the style required to align the arrow with its * reference element. * By default, it will look for a child node of the popper with the `x-arrow` attribute. * * @param {Boolean} [options.gpuAcceleration=true] * When this property is set to true, the popper position will be applied using CSS3 translate3d, allowing the * browser to use the GPU to accelerate the rendering. * If set to false, the popper will be placed using `top` and `left` properties, not using the GPU. * * @param {Number} [options.offset=0] * Amount of pixels the popper will be shifted (can be negative). * * @param {String|Element} [options.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) * * @param {Number} [options.boundariesPadding=5] * Additional padding for the boundaries * * @param {Array} [options.preventOverflowOrder=['left', 'right', 'top', 'bottom']] * Order used when Popper.js tries to avoid overflows from the boundaries, they will be checked in order, * this means that the last ones will never overflow * * @param {String|Array} [options.flipBehavior='flip'] * The behavior used by the `flip` modifier to change the placement of the popper when the latter is trying to * overlap its reference element. Defining `flip` as value, the placement will be flipped on * its axis (`right - left`, `top - bottom`). * You can even pass an array of placements (eg: `['right', 'left', 'top']` ) to manually specify * how alter the placement when a flip is needed. (eg. in the above example, it would first flip from right to left, * then, if even in its new placement, the popper is overlapping its reference element, it will be moved to top) * * @param {Array} [options.modifiers=[ 'shift', 'offset', 'preventOverflow', 'keepTogether', 'arrow', 'flip', 'applyStyle']] * List of functions used to modify the data before they are applied to the popper, add your custom functions * to this array to edit the offsets and placement. * The function should reflect the @params and @returns of preventOverflow * * @param {Array} [options.modifiersIgnored=[]] * Put here any built-in modifier name you want to exclude from the modifiers list * The function should reflect the @params and @returns of preventOverflow * * @param {Boolean} [options.removeOnDestroy=false] * Set to true if you want to automatically remove the popper when you call the `destroy` method. */ function Popper(reference, popper, options) { this._reference = reference.jquery ? reference[0] : reference; this.state = {}; // if the popper variable is a configuration object, parse it to generate an HTMLElement // generate a default popper if is not defined var isNotDefined = typeof popper === 'undefined' || popper === null; var isConfig = popper && Object.prototype.toString.call(popper) === '[object Object]'; if (isNotDefined || isConfig) { this._popper = this.parse(isConfig ? popper : {}); } // otherwise, use the given HTMLElement as popper else { this._popper = popper.jquery ? popper[0] : popper; } // with {} we create a new object with the options inside it this._options = Object.assign({}, DEFAULTS, options); // refactoring modifiers' list this._options.modifiers = this._options.modifiers.map(function (modifier) { // remove ignored modifiers if (this._options.modifiersIgnored.indexOf(modifier) !== -1) return; // 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 if (modifier === 'applyStyle') { this._popper.setAttribute('x-placement', this._options.placement); } // return predefined modifier identified by string or keep the custom one return this.modifiers[modifier] || modifier; }.bind(this)); // make sure to apply the popper position before any computation this.state.position = this._getPosition(this._popper, this._reference); setStyle(this._popper, { position: this.state.position, top: 0 }); // fire the first update to position the popper in the right place this.update(); // setup event listeners, they will take care of update the position in specific situations this._setupEventListeners(); return this; } // // Methods // /** * Destroy the popper * @method * @memberof Popper */ Popper.prototype.destroy = function () { this._popper.removeAttribute('x-placement'); this._popper.style.left = ''; this._popper.style.position = ''; this._popper.style.top = ''; this._popper.style[getSupportedPropertyName('transform')] = ''; this._removeEventListeners(); // remove the popper if user explicity asked for the deletion on destroy if (this._options.removeOnDestroy) { this._popper.remove(); } return this; }; /** * Updates the position of the popper, computing the new offsets and applying the new style * @method * @memberof Popper */ Popper.prototype.update = function () { var data = { instance: this, styles: {} }; // 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 = this._options.placement; data._originalPlacement = this._options.placement; // compute the popper and reference offsets and put them inside data.offsets data.offsets = this._getOffsets(this._popper, this._reference, data.placement); // get boundaries data.boundaries = this._getBoundaries(data, this._options.boundariesPadding, this._options.boundariesElement); data = this.runModifiers(data, this._options.modifiers); if (typeof this.state.updateCallback === 'function') { this.state.updateCallback(data); } }; /** * If a function is passed, it will be executed after the initialization of popper with as first argument the Popper instance. * @method * @memberof Popper * @param {Function} callback */ Popper.prototype.onCreate = function (callback) { // the createCallbacks return as first argument the popper instance callback(this); return this; }; /** * If a function is passed, it will be executed after each update of popper with as first argument the set of coordinates and informations * used to style popper and its arrow. * NOTE: it doesn't get fired on the first call of the `Popper.update()` method inside the `Popper` constructor! * @method * @memberof Popper * @param {Function} callback */ Popper.prototype.onUpdate = function (callback) { this.state.updateCallback = callback; return this; }; /** * Helper used to generate poppers from a configuration file * @method * @memberof Popper * @param config {Object} configuration * @returns {HTMLElement} popper */ Popper.prototype.parse = function (config) { var defaultConfig = { tagName: 'div', classNames: ['popper'], attributes: [], parent: root.document.body, content: '', contentType: 'text', arrowTagName: 'div', arrowClassNames: ['popper__arrow'], arrowAttributes: ['x-arrow'] }; config = Object.assign({}, defaultConfig, config); var d = root.document; var popper = d.createElement(config.tagName); addClassNames(popper, config.classNames); addAttributes(popper, config.attributes); if (config.contentType === 'node') { popper.appendChild(config.content.jquery ? config.content[0] : config.content); } else if (config.contentType === 'html') { popper.innerHTML = config.content; } else { popper.textContent = config.content; } if (config.arrowTagName) { var arrow = d.createElement(config.arrowTagName); addClassNames(arrow, config.arrowClassNames); addAttributes(arrow, config.arrowAttributes); popper.appendChild(arrow); } var parent = config.parent.jquery ? config.parent[0] : config.parent; // if the given parent is a string, use it to match an element // if more than one element is matched, the first one will be used as parent // if no elements are matched, the script will throw an error if (typeof parent === 'string') { parent = d.querySelectorAll(config.parent); if (parent.length > 1) { console.warn('WARNING: the given `parent` query(' + config.parent + ') matched more than one element, the first one will be used'); } if (parent.length === 0) { throw 'ERROR: the given `parent` doesn\'t exists!'; } parent = parent[0]; } // if the given parent is a DOM nodes list or an array of nodes with more than one element, // the first one will be used as parent if (parent.length > 1 && parent instanceof Element === false) { console.warn('WARNING: you have passed as parent a list of elements, the first one will be used'); parent = parent[0]; } // append the generated popper to its parent parent.appendChild(popper); return popper; /** * Adds class names to the given element * @function * @ignore * @param {HTMLElement} target * @param {Array} classes */ function addClassNames(element, classNames) { classNames.forEach(function (className) { element.classList.add(className); }); } /** * Adds attributes to the given element * @function * @ignore * @param {HTMLElement} target * @param {Array} attributes * @example * addAttributes(element, [ 'data-info:foobar' ]); */ function addAttributes(element, attributes) { attributes.forEach(function (attribute) { element.setAttribute(attribute.split(':')[0], attribute.split(':')[1] || ''); }); } }; /** * Helper used to get the position which will be applied to the popper * @method * @memberof Popper * @param config {HTMLElement} popper element * @param reference {HTMLElement} reference element * @returns {String} position */ Popper.prototype._getPosition = function (popper, reference) { var container = getOffsetParent(reference); if (this._options.forceAbsolute) { return 'absolute'; } // Decide if the popper will be fixed // If the reference element is inside a fixed context, the popper will be fixed as well to allow them to scroll together var isParentFixed = isFixed(reference, container); return isParentFixed ? 'fixed' : 'absolute'; }; /** * Get offsets to the popper * @method * @memberof Popper * @access private * @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 */ Popper.prototype._getOffsets = function (popper, reference, placement) { placement = placement.split('-')[0]; var popperOffsets = {}; popperOffsets.position = this.state.position; var isParentFixed = popperOffsets.position === 'fixed'; // // Get reference element position // var referenceOffsets = getOffsetRectRelativeToCustomParent(reference, getOffsetParent(popper), isParentFixed); // // Get popper sizes // var popperRect = getOuterSizes(popper); // // Compute offsets of popper // // depending by the popper placement we have to compute its offsets slightly differently if (['right', 'left'].indexOf(placement) !== -1) { popperOffsets.top = referenceOffsets.top + referenceOffsets.height / 2 - popperRect.height / 2; if (placement === 'left') { popperOffsets.left = referenceOffsets.left - popperRect.width; } else { popperOffsets.left = referenceOffsets.right; } } else { popperOffsets.left = referenceOffsets.left + referenceOffsets.width / 2 - popperRect.width / 2; if (placement === 'top') { popperOffsets.top = referenceOffsets.top - popperRect.height; } else { popperOffsets.top = referenceOffsets.bottom; } } // Add width and height to our offsets object popperOffsets.width = popperRect.width; popperOffsets.height = popperRect.height; return { popper: popperOffsets, reference: referenceOffsets }; }; /** * Setup needed event listeners used to update the popper position * @method * @memberof Popper * @access private */ Popper.prototype._setupEventListeners = function () { // NOTE: 1 DOM access here this.state.updateBound = this.update.bind(this); root.addEventListener('resize', this.state.updateBound); // if the boundariesElement is window we don't need to listen for the scroll event if (this._options.boundariesElement !== 'window') { var target = getScrollParent(this._reference); // here it could be both `body` or `documentElement` thanks to Firefox, we then check both if (target === root.document.body || target === root.document.documentElement) { target = root; } target.addEventListener('scroll', this.state.updateBound); this.state.scrollTarget = target; } }; /** * Remove event listeners used to update the popper position * @method * @memberof Popper * @access private */ Popper.prototype._removeEventListeners = function () { // NOTE: 1 DOM access here root.removeEventListener('resize', this.state.updateBound); if (this._options.boundariesElement !== 'window' && this.state.scrollTarget) { this.state.scrollTarget.removeEventListener('scroll', this.state.updateBound); this.state.scrollTarget = null; } this.state.updateBound = null; }; /** * Computed the boundaries limits and return them * @method * @memberof Popper * @access private * @param {Object} data - Object containing the property "offsets" generated by `_getOffsets` * @param {Number} padding - Boundaries padding * @param {Element} boundariesElement - Element used to define the boundaries * @returns {Object} Coordinates of the boundaries */ Popper.prototype._getBoundaries = function (data, padding, boundariesElement) { // NOTE: 1 DOM access here var boundaries = {}; var width, height; if (boundariesElement === 'window') { var body = root.document.body, html = root.document.documentElement; height = Math.max(body.scrollHeight, body.offsetHeight, html.clientHeight, html.scrollHeight, html.offsetHeight); width = Math.max(body.scrollWidth, body.offsetWidth, html.clientWidth, html.scrollWidth, html.offsetWidth); boundaries = { top: 0, right: width, bottom: height, left: 0 }; } else if (boundariesElement === 'viewport') { var offsetParent = getOffsetParent(this._popper); var scrollParent = getScrollParent(this._popper); var offsetParentRect = getOffsetRect(offsetParent); // Thanks the fucking native API, `document.body.scrollTop` & `document.documentElement.scrollTop` var getScrollTopValue = function getScrollTopValue(element) { return element == document.body ? Math.max(document.documentElement.scrollTop, document.body.scrollTop) : element.scrollTop; }; var getScrollLeftValue = function getScrollLeftValue(element) { return element == document.body ? Math.max(document.documentElement.scrollLeft, document.body.scrollLeft) : element.scrollLeft; }; // if the popper is fixed we don't have to substract scrolling from the boundaries var scrollTop = data.offsets.popper.position === 'fixed' ? 0 : getScrollTopValue(scrollParent); var scrollLeft = data.offsets.popper.position === 'fixed' ? 0 : getScrollLeftValue(scrollParent); boundaries = { top: 0 - (offsetParentRect.top - scrollTop), right: root.document.documentElement.clientWidth - (offsetParentRect.left - scrollLeft), bottom: root.document.documentElement.clientHeight - (offsetParentRect.top - scrollTop), left: 0 - (offsetParentRect.left - scrollLeft) }; } else { if (getOffsetParent(this._popper) === boundariesElement) { boundaries = { top: 0, left: 0, right: boundariesElement.clientWidth, bottom: boundariesElement.clientHeight }; } else { boundaries = getOffsetRect(boundariesElement); } } boundaries.left += padding; boundaries.right -= padding; boundaries.top = boundaries.top + padding; boundaries.bottom = boundaries.bottom - padding; return boundaries; }; /** * Loop trough the list of modifiers and run them in order, each of them will then edit the data object * @method * @memberof Popper * @access public * @param {Object} data * @param {Array} modifiers * @param {Function} ends */ Popper.prototype.runModifiers = function (data, modifiers, ends) { var modifiersToRun = modifiers.slice(); if (ends !== undefined) { modifiersToRun = this._options.modifiers.slice(0, getArrayKeyIndex(this._options.modifiers, ends)); } modifiersToRun.forEach(function (modifier) { if (isFunction(modifier)) { data = modifier.call(this, data); } }.bind(this)); return data; }; /** * Helper used to know if the given modifier depends from another one. * @method * @memberof Popper * @param {String} requesting - name of requesting modifier * @param {String} requested - name of requested modifier * @returns {Boolean} */ Popper.prototype.isModifierRequired = function (requesting, requested) { var index = getArrayKeyIndex(this._options.modifiers, requesting); return !!this._options.modifiers.slice(0, index).filter(function (modifier) { return modifier === requested; }).length; }; // // Modifiers // /** * Modifiers list * @namespace Popper.modifiers * @memberof Popper * @type {Object} */ Popper.prototype.modifiers = {}; /** * Apply the computed styles to the popper element * @method * @memberof Popper.modifiers * @argument {Object} data - The data object generated by `update` method * @returns {Object} The same data object */ Popper.prototype.modifiers.applyStyle = function (data) { // apply the final offsets to the popper // NOTE: 1 DOM access here var styles = { position: data.offsets.popper.position }; // round top and left to avoid blurry text var left = Math.round(data.offsets.popper.left); var top = Math.round(data.offsets.popper.top); // 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; if (this._options.gpuAcceleration && (prefixedProperty = getSupportedPropertyName('transform'))) { styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)'; styles.top = 0; styles.left = 0; } // othwerise, we use the standard `left` and `top` properties else { styles.left = left; styles.top = top; } // 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! Object.assign(styles, data.styles); setStyle(this._popper, styles); // set an attribute which will be useful to style the tooltip (use it to properly position its arrow) // NOTE: 1 DOM access here this._popper.setAttribute('x-placement', data.placement); // if the arrow modifier is required and the arrow style has been computed, apply the arrow style if (this.isModifierRequired(this.modifiers.applyStyle, this.modifiers.arrow) && data.offsets.arrow) { setStyle(data.arrowElement, data.offsets.arrow); } return data; }; /** * Modifier used to shift the popper on the start or end of its reference element side * @method * @memberof Popper.modifiers * @argument {Object} data - The data object generated by `update` method * @returns {Object} The data object, properly modified */ Popper.prototype.modifiers.shift = function (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 reference = data.offsets.reference; var popper = getPopperClientRect(data.offsets.popper); var shiftOffsets = { y: { start: { top: reference.top }, end: { top: reference.top + reference.height - popper.height } }, x: { start: { left: reference.left }, end: { left: reference.left + reference.width - popper.width } } }; var axis = ['bottom', 'top'].indexOf(basePlacement) !== -1 ? 'x' : 'y'; data.offsets.popper = Object.assign(popper, shiftOffsets[axis][shiftVariation]); } return data; }; /** * Modifier used to make sure the popper does not overflows from it's boundaries * @method * @memberof Popper.modifiers * @argument {Object} data - The data object generated by `update` method * @returns {Object} The data object, properly modified */ Popper.prototype.modifiers.preventOverflow = function (data) { var order = this._options.preventOverflowOrder; var popper = getPopperClientRect(data.offsets.popper); var check = { left: function left() { var left = popper.left; if (popper.left < data.boundaries.left) { left = Math.max(popper.left, data.boundaries.left); } return { left: left }; }, right: function right() { var left = popper.left; if (popper.right > data.boundaries.right) { left = Math.min(popper.left, data.boundaries.right - popper.width); } return { left: left }; }, top: function top() { var top = popper.top; if (popper.top < data.boundaries.top) { top = Math.max(popper.top, data.boundaries.top); } return { top: top }; }, bottom: function bottom() { var top = popper.top; if (popper.bottom > data.boundaries.bottom) { top = Math.min(popper.top, data.boundaries.bottom - popper.height); } return { top: top }; } }; order.forEach(function (direction) { data.offsets.popper = Object.assign(popper, check[direction]()); }); return data; }; /** * Modifier used to make sure the popper is always near its reference * @method * @memberof Popper.modifiers * @argument {Object} data - The data object generated by _update method * @returns {Object} The data object, properly modified */ Popper.prototype.modifiers.keepTogether = function (data) { var popper = getPopperClientRect(data.offsets.popper); var reference = data.offsets.reference; var f = Math.floor; if (popper.right < f(reference.left)) { data.offsets.popper.left = f(reference.left) - popper.width; } if (popper.left > f(reference.right)) { data.offsets.popper.left = f(reference.right); } if (popper.bottom < f(reference.top)) { data.offsets.popper.top = f(reference.top) - popper.height; } if (popper.top > f(reference.bottom)) { data.offsets.popper.top = f(reference.bottom); } return data; }; /** * Modifier used to flip the placement of the popper when the latter is starting overlapping its reference element. * Requires the `preventOverflow` modifier before it in order to work. * **NOTE:** This modifier will run all its previous modifiers everytime it tries to flip the popper! * @method * @memberof Popper.modifiers * @argument {Object} data - The data object generated by _update method * @returns {Object} The data object, properly modified */ Popper.prototype.modifiers.flip = function (data) { // check if preventOverflow is in the list of modifiers before the flip modifier. // otherwise flip would not work as expected. if (!this.isModifierRequired(this.modifiers.flip, this.modifiers.preventOverflow)) { console.warn('WARNING: preventOverflow modifier is required by flip modifier in order to work, be sure to include it before flip!'); 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 placement = data.placement.split('-')[0]; var placementOpposite = getOppositePlacement(placement); var variation = data.placement.split('-')[1] || ''; var flipOrder = []; if (this._options.flipBehavior === 'flip') { flipOrder = [placement, placementOpposite]; } else { flipOrder = this._options.flipBehavior; } flipOrder.forEach(function (step, index) { if (placement !== step || flipOrder.length === index + 1) { return; } placement = data.placement.split('-')[0]; placementOpposite = getOppositePlacement(placement); var popperOffsets = getPopperClientRect(data.offsets.popper); // this boolean is used to distinguish right and bottom from top and left // they need different computations to get flipped var a = ['right', 'bottom'].indexOf(placement) !== -1; // using Math.floor because the reference offsets may contain decimals we are not going to consider here if (a && Math.floor(data.offsets.reference[placement]) > Math.floor(popperOffsets[placementOpposite]) || !a && Math.floor(data.offsets.reference[placement]) < Math.floor(popperOffsets[placementOpposite])) { // we'll use this boolean to detect any flip loop data.flipped = true; data.placement = flipOrder[index + 1]; if (variation) { data.placement += '-' + variation; } data.offsets.popper = this._getOffsets(this._popper, this._reference, data.placement).popper; data = this.runModifiers(data, this._options.modifiers, this._flip); } }.bind(this)); return data; }; /** * Modifier used to add an offset to the popper, useful if you more granularity positioning your popper. * The offsets will shift the popper on the side of its reference element. * @method * @memberof Popper.modifiers * @argument {Object} data - The data object generated by _update method * @returns {Object} The data object, properly modified */ Popper.prototype.modifiers.offset = function (data) { var offset = this._options.offset; var popper = data.offsets.popper; if (data.placement.indexOf('left') !== -1) { popper.top -= offset; } else if (data.placement.indexOf('right') !== -1) { popper.top += offset; } else if (data.placement.indexOf('top') !== -1) { popper.left -= offset; } else if (data.placement.indexOf('bottom') !== -1) { popper.left += offset; } return data; }; /** * Modifier used to move the arrows on the edge of the popper to make sure them are always between the popper and the reference element * It will use the CSS outer size of the arrow element to know how many pixels of conjuction are needed * @method * @memberof Popper.modifiers * @argument {Object} data - The data object generated by _update method * @returns {Object} The data object, properly modified */ Popper.prototype.modifiers.arrow = function (data) { var arrow = this._options.arrowElement; var arrowOffset = this._options.arrowOffset; // if the arrowElement is a string, suppose it's a CSS selector if (typeof arrow === 'string') { arrow = this._popper.querySelector(arrow); } // if arrow element is not found, don't run the modifier if (!arrow) { return data; } // the arrow element must be child of its popper if (!this._popper.contains(arrow)) { console.warn('WARNING: `arrowElement` must be child of its popper element!'); return data; } // arrow depends on keepTogether in order to work if (!this.isModifierRequired(this.modifiers.arrow, this.modifiers.keepTogether)) { console.warn('WARNING: keepTogether modifier is required by arrow modifier in order to work, be sure to include it before arrow!'); return data; } var arrowStyle = {}; var placement = data.placement.split('-')[0]; var popper = getPopperClientRect(data.offsets.popper); var reference = data.offsets.reference; var isVertical = ['left', 'right'].indexOf(placement) !== -1; var len = isVertical ? 'height' : 'width'; var side = isVertical ? 'top' : 'left'; var translate = isVertical ? 'translateY' : 'translateX'; var altSide = isVertical ? 'left' : 'top'; var opSide = isVertical ? 'bottom' : 'right'; var arrowSize = getOuterSizes(arrow)[len]; // // extends keepTogether behavior making sure the popper and its reference have enough pixels in conjuction // // top/left side if (reference[opSide] - arrowSize < popper[side]) { data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowSize); } // bottom/right side if (reference[side] + arrowSize > popper[opSide]) { data.offsets.popper[side] += reference[side] + arrowSize - popper[opSide]; } // compute center of the popper var center = reference[side] + (arrowOffset || reference[len] / 2 - arrowSize / 2); var sideValue = center - popper[side]; // prevent arrow from being placed not contiguously to its popper sideValue = Math.max(Math.min(popper[len] - arrowSize - 8, sideValue), 8); arrowStyle[side] = sideValue; arrowStyle[altSide] = ''; // make sure to remove any old style from the arrow data.offsets.arrow = arrowStyle; data.arrowElement = arrow; return data; }; // // Helpers // /** * Get the outer sizes of the given element (offset size + margins) * @function * @ignore * @argument {Element} element * @returns {Object} object containing width and height properties */ function getOuterSizes(element) { // NOTE: 1 DOM access here var _display = element.style.display, _visibility = element.style.visibility; element.style.display = 'block';element.style.visibility = 'hidden'; var calcWidthToForceRepaint = element.offsetWidth; // original method var styles = root.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 }; // reset element styles element.style.display = _display;element.style.visibility = _visibility; return result; } /** * Get the opposite placement of the given one/ * @function * @ignore * @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]; }); } /** * Given the popper offsets, generate an output similar to getBoundingClientRect * @function * @ignore * @argument {Object} popperOffsets * @returns {Object} ClientRect like output */ function getPopperClientRect(popperOffsets) { var offsets = Object.assign({}, popperOffsets); offsets.right = offsets.left + offsets.width; offsets.bottom = offsets.top + offsets.height; return offsets; } /** * Given an array and the key to find, returns its index * @function * @ignore * @argument {Array} arr * @argument keyToFind * @returns index or null */ function getArrayKeyIndex(arr, keyToFind) { var i = 0, key; for (key in arr) { if (arr[key] === keyToFind) { return i; } i++; } return null; } /** * Get CSS computed property of the given element * @function * @ignore * @argument {Eement} element * @argument {String} property */ function getStyleComputedProperty(element, property) { // NOTE: 1 DOM access here var css = root.getComputedStyle(element, null); return css[property]; } /** * Returns the offset parent of the given element * @function * @ignore * @argument {Element} element * @returns {Element} offset parent */ function getOffsetParent(element) { // NOTE: 1 DOM access here var offsetParent = element.offsetParent; return offsetParent === root.document.body || !offsetParent ? root.document.documentElement : offsetParent; } /** * Returns the scrolling parent of the given element * @function * @ignore * @argument {Element} element * @returns {Element} offset parent */ function getScrollParent(element) { var parent = element.parentNode; if (!parent) { return element; } if (parent === root.document) { // Firefox puts the scrollTOp value on `documentElement` instead of `body`, we then check which of them is // greater than 0 and return the proper element if (root.document.body.scrollTop || root.document.body.scrollLeft) { return root.document.body; } else { return root.document.documentElement; } } // Firefox want us to check `-x` and `-y` variations as well if (['scroll', 'auto'].indexOf(getStyleComputedProperty(parent, 'overflow')) !== -1 || ['scroll', 'auto'].indexOf(getStyleComputedProperty(parent, 'overflow-x')) !== -1 || ['scroll', 'auto'].indexOf(getStyleComputedProperty(parent, 'overflow-y')) !== -1) { // If the detected scrollParent is body, we perform an additional check on its parentNode // in this way we'll get body if the browser is Chrome-ish, or documentElement otherwise // fixes issue #65 return parent; } return getScrollParent(element.parentNode); } /** * Check if the given element is fixed or is inside a fixed parent * @function * @ignore * @argument {Element} element * @argument {Element} customContainer * @returns {Boolean} answer to "isFixed?" */ function isFixed(element) { if (element === root.document.body) { return false; } if (getStyleComputedProperty(element, 'position') === 'fixed') { return true; } return element.parentNode ? isFixed(element.parentNode) : element; } /** * Set the style to the given popper * @function * @ignore * @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 setStyle(element, styles) { function is_numeric(n) { return n !== '' && !isNaN(parseFloat(n)) && isFinite(n); } 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 && is_numeric(styles[prop])) { unit = 'px'; } element.style[prop] = styles[prop] + unit; }); } /** * Check if the given variable is a function * @function * @ignore * @argument {*} 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 the position of the given element, relative to its offset parent * @function * @ignore * @param {Element} element * @return {Object} position - Coordinates of the element and its `scrollTop` */ function getOffsetRect(element) { var elementRect = { width: element.offsetWidth, height: element.offsetHeight, left: element.offsetLeft, top: element.offsetTop }; elementRect.right = elementRect.left + elementRect.width; elementRect.bottom = elementRect.top + elementRect.height; // position return elementRect; } /** * Get bounding client rect of given element * @function * @ignore * @param {HTMLElement} element * @return {Object} client rect */ function getBoundingClientRect(element) { var rect = element.getBoundingClientRect(); // whether the IE version is lower than 11 var isIE = navigator.userAgent.indexOf("MSIE") != -1; // fix ie document bounding top always 0 bug var rectTop = isIE && element.tagName === 'HTML' ? -element.scrollTop : rect.top; return { left: rect.left, top: rectTop, right: rect.right, bottom: rect.bottom, width: rect.right - rect.left, height: rect.bottom - rectTop }; } /** * Given an element and one of its parents, return the offset * @function * @ignore * @param {HTMLElement} element * @param {HTMLElement} parent * @return {Object} rect */ function getOffsetRectRelativeToCustomParent(element, parent, fixed) { var elementRect = getBoundingClientRect(element); var parentRect = getBoundingClientRect(parent); if (fixed) { var scrollParent = getScrollParent(parent); parentRect.top += scrollParent.scrollTop; parentRect.bottom += scrollParent.scrollTop; parentRect.left += scrollParent.scrollLeft; parentRect.right += scrollParent.scrollLeft; } var rect = { top: elementRect.top - parentRect.top, left: elementRect.left - parentRect.left, bottom: elementRect.top - parentRect.top + elementRect.height, right: elementRect.left - parentRect.left + elementRect.width, width: elementRect.width, height: elementRect.height }; return rect; } /** * Get the prefixed supported property name * @function * @ignore * @argument {String} property (camelCase) * @returns {String} prefixed property (camelCase) */ function getSupportedPropertyName(property) { var prefixes = ['', 'ms', 'webkit', 'moz', 'o']; for (var i = 0; i < prefixes.length; i++) { var toCheck = prefixes[i] ? prefixes[i] + property.charAt(0).toUpperCase() + property.slice(1) : property; if (typeof root.document.body.style[toCheck] !== 'undefined') { return toCheck; } } return null; } /** * The Object.assign() method is used to copy the values of all enumerable own properties from one or more source * objects to a target object. It will return the target object. * This polyfill doesn't support symbol properties, since ES5 doesn't have symbols anyway * Source: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/assign * @function * @ignore */ if (!Object.assign) { Object.defineProperty(Object, 'assign', { enumerable: false, configurable: true, writable: true, value: function value(target) { if (target === undefined || target === null) { throw new TypeError('Cannot convert first argument to object'); } var to = Object(target); for (var i = 1; i < arguments.length; i++) { var nextSource = arguments[i]; if (nextSource === undefined || nextSource === null) { continue; } nextSource = Object(nextSource); var keysArray = Object.keys(nextSource); for (var nextIndex = 0, len = keysArray.length; nextIndex < len; nextIndex++) { var nextKey = keysArray[nextIndex]; var desc = Object.getOwnPropertyDescriptor(nextSource, nextKey); if (desc !== undefined && desc.enumerable) { to[nextKey] = nextSource[nextKey]; } } } return to; } }); } return Popper; });