function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; } /** * -------------------------------------------------------------------------- * Bootstrap (v4.0.0-beta.2): scrollspy.js * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) * -------------------------------------------------------------------------- */ var ScrollSpy = function () { /** * ------------------------------------------------------------------------ * Constants * ------------------------------------------------------------------------ */ var NAME = 'scrollspy'; var VERSION = '4.0.0-beta.2'; var DATA_KEY = 'bs.scrollspy'; var EVENT_KEY = "." + DATA_KEY; var DATA_API_KEY = '.data-api'; var JQUERY_NO_CONFLICT = $.fn[NAME]; var Default = { offset: 10, method: 'auto', target: '' }; var DefaultType = { offset: 'number', method: 'string', target: '(string|element)' }; var Event = { ACTIVATE: "activate" + EVENT_KEY, SCROLL: "scroll" + EVENT_KEY, LOAD_DATA_API: "load" + EVENT_KEY + DATA_API_KEY }; var ClassName = { DROPDOWN_ITEM: 'dropdown-item', DROPDOWN_MENU: 'dropdown-menu', ACTIVE: 'active' }; var Selector = { DATA_SPY: '[data-spy="scroll"]', ACTIVE: '.active', NAV_LIST_GROUP: '.nav, .list-group', NAV_LINKS: '.nav-link', NAV_ITEMS: '.nav-item', LIST_ITEMS: '.list-group-item', DROPDOWN: '.dropdown', DROPDOWN_ITEMS: '.dropdown-item', DROPDOWN_TOGGLE: '.dropdown-toggle' }; var OffsetMethod = { OFFSET: 'offset', POSITION: 'position' /** * ------------------------------------------------------------------------ * Class Definition * ------------------------------------------------------------------------ */ }; var ScrollSpy = /*#__PURE__*/ function () { function ScrollSpy(element, config) { var _this = this; this._element = element; this._scrollElement = element.tagName === 'BODY' ? window : element; this._config = this._getConfig(config); this._selector = this._config.target + " " + Selector.NAV_LINKS + "," + (this._config.target + " " + Selector.LIST_ITEMS + ",") + (this._config.target + " " + Selector.DROPDOWN_ITEMS); this._offsets = []; this._targets = []; this._activeTarget = null; this._scrollHeight = 0; $(this._scrollElement).on(Event.SCROLL, function (event) { return _this._process(event); }); this.refresh(); this._process(); } // getters var _proto = ScrollSpy.prototype; // public _proto.refresh = function refresh() { var _this2 = this; var autoMethod = this._scrollElement !== this._scrollElement.window ? OffsetMethod.POSITION : OffsetMethod.OFFSET; var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method; var offsetBase = offsetMethod === OffsetMethod.POSITION ? this._getScrollTop() : 0; this._offsets = []; this._targets = []; this._scrollHeight = this._getScrollHeight(); var targets = $.makeArray($(this._selector)); targets.map(function (element) { var target; var targetSelector = Util.getSelectorFromElement(element); if (targetSelector) { target = $(targetSelector)[0]; } if (target) { var targetBCR = target.getBoundingClientRect(); if (targetBCR.width || targetBCR.height) { // todo (fat): remove sketch reliance on jQuery position/offset return [$(target)[offsetMethod]().top + offsetBase, targetSelector]; } } return null; }).filter(function (item) { return item; }).sort(function (a, b) { return a[0] - b[0]; }).forEach(function (item) { _this2._offsets.push(item[0]); _this2._targets.push(item[1]); }); }; _proto.dispose = function dispose() { $.removeData(this._element, DATA_KEY); $(this._scrollElement).off(EVENT_KEY); this._element = null; this._scrollElement = null; this._config = null; this._selector = null; this._offsets = null; this._targets = null; this._activeTarget = null; this._scrollHeight = null; }; // private _proto._getConfig = function _getConfig(config) { config = $.extend({}, Default, config); if (typeof config.target !== 'string') { var id = $(config.target).attr('id'); if (!id) { id = Util.getUID(NAME); $(config.target).attr('id', id); } config.target = "#" + id; } Util.typeCheckConfig(NAME, config, DefaultType); return config; }; _proto._getScrollTop = function _getScrollTop() { return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop; }; _proto._getScrollHeight = function _getScrollHeight() { return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight); }; _proto._getOffsetHeight = function _getOffsetHeight() { return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height; }; _proto._process = function _process() { var scrollTop = this._getScrollTop() + this._config.offset; var scrollHeight = this._getScrollHeight(); var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight(); if (this._scrollHeight !== scrollHeight) { this.refresh(); } if (scrollTop >= maxScroll) { var target = this._targets[this._targets.length - 1]; if (this._activeTarget !== target) { this._activate(target); } return; } if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) { this._activeTarget = null; this._clear(); return; } for (var i = this._offsets.length; i--;) { var isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]); if (isActiveTarget) { this._activate(this._targets[i]); } } }; _proto._activate = function _activate(target) { this._activeTarget = target; this._clear(); var queries = this._selector.split(','); // eslint-disable-next-line arrow-body-style queries = queries.map(function (selector) { return selector + "[data-target=\"" + target + "\"]," + (selector + "[href=\"" + target + "\"]"); }); var $link = $(queries.join(',')); if ($link.hasClass(ClassName.DROPDOWN_ITEM)) { $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE); $link.addClass(ClassName.ACTIVE); } else { // Set triggered link as active $link.addClass(ClassName.ACTIVE); // Set triggered links parents as active // With both