1 (function (global, factory) {
2 typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('jquery'), require('./util.js')) :
3 typeof define === 'function' && define.amd ? define(['jquery', './util.js'], factory) :
4 (global.ScrollSpy = factory(global.jQuery,global.Util));
5 }(this, (function ($,Util) { 'use strict';
7 $ = $ && $.hasOwnProperty('default') ? $['default'] : $;
8 Util = Util && Util.hasOwnProperty('default') ? Util['default'] : Util;
10 function _defineProperties(target, props) {
11 for (var i = 0; i < props.length; i++) {
12 var descriptor = props[i];
13 descriptor.enumerable = descriptor.enumerable || false;
14 descriptor.configurable = true;
15 if ("value" in descriptor) descriptor.writable = true;
16 Object.defineProperty(target, descriptor.key, descriptor);
20 function _createClass(Constructor, protoProps, staticProps) {
21 if (protoProps) _defineProperties(Constructor.prototype, protoProps);
22 if (staticProps) _defineProperties(Constructor, staticProps);
26 function _defineProperty(obj, key, value) {
28 Object.defineProperty(obj, key, {
41 function _objectSpread(target) {
42 for (var i = 1; i < arguments.length; i++) {
43 var source = arguments[i] != null ? arguments[i] : {};
44 var ownKeys = Object.keys(source);
46 if (typeof Object.getOwnPropertySymbols === 'function') {
47 ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
48 return Object.getOwnPropertyDescriptor(source, sym).enumerable;
52 ownKeys.forEach(function (key) {
53 _defineProperty(target, key, source[key]);
61 * --------------------------------------------------------------------------
62 * Bootstrap (v4.1.3): scrollspy.js
63 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
64 * --------------------------------------------------------------------------
67 var ScrollSpy = function ($$$1) {
69 * ------------------------------------------------------------------------
71 * ------------------------------------------------------------------------
73 var NAME = 'scrollspy';
74 var VERSION = '4.1.3';
75 var DATA_KEY = 'bs.scrollspy';
76 var EVENT_KEY = "." + DATA_KEY;
77 var DATA_API_KEY = '.data-api';
78 var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
87 target: '(string|element)'
90 ACTIVATE: "activate" + EVENT_KEY,
91 SCROLL: "scroll" + EVENT_KEY,
92 LOAD_DATA_API: "load" + EVENT_KEY + DATA_API_KEY
95 DROPDOWN_ITEM: 'dropdown-item',
96 DROPDOWN_MENU: 'dropdown-menu',
100 DATA_SPY: '[data-spy="scroll"]',
102 NAV_LIST_GROUP: '.nav, .list-group',
103 NAV_LINKS: '.nav-link',
104 NAV_ITEMS: '.nav-item',
105 LIST_ITEMS: '.list-group-item',
106 DROPDOWN: '.dropdown',
107 DROPDOWN_ITEMS: '.dropdown-item',
108 DROPDOWN_TOGGLE: '.dropdown-toggle'
114 * ------------------------------------------------------------------------
116 * ------------------------------------------------------------------------
124 function ScrollSpy(element, config) {
127 this._element = element;
128 this._scrollElement = element.tagName === 'BODY' ? window : element;
129 this._config = this._getConfig(config);
130 this._selector = this._config.target + " " + Selector.NAV_LINKS + "," + (this._config.target + " " + Selector.LIST_ITEMS + ",") + (this._config.target + " " + Selector.DROPDOWN_ITEMS);
133 this._activeTarget = null;
134 this._scrollHeight = 0;
135 $$$1(this._scrollElement).on(Event.SCROLL, function (event) {
136 return _this._process(event);
144 var _proto = ScrollSpy.prototype;
147 _proto.refresh = function refresh() {
150 var autoMethod = this._scrollElement === this._scrollElement.window ? OffsetMethod.OFFSET : OffsetMethod.POSITION;
151 var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
152 var offsetBase = offsetMethod === OffsetMethod.POSITION ? this._getScrollTop() : 0;
155 this._scrollHeight = this._getScrollHeight();
156 var targets = [].slice.call(document.querySelectorAll(this._selector));
157 targets.map(function (element) {
159 var targetSelector = Util.getSelectorFromElement(element);
161 if (targetSelector) {
162 target = document.querySelector(targetSelector);
166 var targetBCR = target.getBoundingClientRect();
168 if (targetBCR.width || targetBCR.height) {
169 // TODO (fat): remove sketch reliance on jQuery position/offset
170 return [$$$1(target)[offsetMethod]().top + offsetBase, targetSelector];
175 }).filter(function (item) {
177 }).sort(function (a, b) {
179 }).forEach(function (item) {
180 _this2._offsets.push(item[0]);
182 _this2._targets.push(item[1]);
186 _proto.dispose = function dispose() {
187 $$$1.removeData(this._element, DATA_KEY);
188 $$$1(this._scrollElement).off(EVENT_KEY);
189 this._element = null;
190 this._scrollElement = null;
192 this._selector = null;
193 this._offsets = null;
194 this._targets = null;
195 this._activeTarget = null;
196 this._scrollHeight = null;
200 _proto._getConfig = function _getConfig(config) {
201 config = _objectSpread({}, Default, typeof config === 'object' && config ? config : {});
203 if (typeof config.target !== 'string') {
204 var id = $$$1(config.target).attr('id');
207 id = Util.getUID(NAME);
208 $$$1(config.target).attr('id', id);
211 config.target = "#" + id;
214 Util.typeCheckConfig(NAME, config, DefaultType);
218 _proto._getScrollTop = function _getScrollTop() {
219 return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
222 _proto._getScrollHeight = function _getScrollHeight() {
223 return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
226 _proto._getOffsetHeight = function _getOffsetHeight() {
227 return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
230 _proto._process = function _process() {
231 var scrollTop = this._getScrollTop() + this._config.offset;
233 var scrollHeight = this._getScrollHeight();
235 var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
237 if (this._scrollHeight !== scrollHeight) {
241 if (scrollTop >= maxScroll) {
242 var target = this._targets[this._targets.length - 1];
244 if (this._activeTarget !== target) {
245 this._activate(target);
251 if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
252 this._activeTarget = null;
259 var offsetLength = this._offsets.length;
261 for (var i = offsetLength; i--;) {
262 var isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);
264 if (isActiveTarget) {
265 this._activate(this._targets[i]);
270 _proto._activate = function _activate(target) {
271 this._activeTarget = target;
275 var queries = this._selector.split(','); // eslint-disable-next-line arrow-body-style
278 queries = queries.map(function (selector) {
279 return selector + "[data-target=\"" + target + "\"]," + (selector + "[href=\"" + target + "\"]");
281 var $link = $$$1([].slice.call(document.querySelectorAll(queries.join(','))));
283 if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {
284 $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE);
285 $link.addClass(ClassName.ACTIVE);
287 // Set triggered link as active
288 $link.addClass(ClassName.ACTIVE); // Set triggered links parents as active
289 // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
291 $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_LINKS + ", " + Selector.LIST_ITEMS).addClass(ClassName.ACTIVE); // Handle special case when .nav-link is inside .nav-item
293 $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_ITEMS).children(Selector.NAV_LINKS).addClass(ClassName.ACTIVE);
296 $$$1(this._scrollElement).trigger(Event.ACTIVATE, {
297 relatedTarget: target
301 _proto._clear = function _clear() {
302 var nodes = [].slice.call(document.querySelectorAll(this._selector));
303 $$$1(nodes).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE);
307 ScrollSpy._jQueryInterface = function _jQueryInterface(config) {
308 return this.each(function () {
309 var data = $$$1(this).data(DATA_KEY);
311 var _config = typeof config === 'object' && config;
314 data = new ScrollSpy(this, _config);
315 $$$1(this).data(DATA_KEY, data);
318 if (typeof config === 'string') {
319 if (typeof data[config] === 'undefined') {
320 throw new TypeError("No method named \"" + config + "\"");
328 _createClass(ScrollSpy, null, [{
330 get: function get() {
335 get: function get() {
343 * ------------------------------------------------------------------------
344 * Data Api implementation
345 * ------------------------------------------------------------------------
349 $$$1(window).on(Event.LOAD_DATA_API, function () {
350 var scrollSpys = [].slice.call(document.querySelectorAll(Selector.DATA_SPY));
351 var scrollSpysLength = scrollSpys.length;
353 for (var i = scrollSpysLength; i--;) {
354 var $spy = $$$1(scrollSpys[i]);
356 ScrollSpy._jQueryInterface.call($spy, $spy.data());
360 * ------------------------------------------------------------------------
362 * ------------------------------------------------------------------------
365 $$$1.fn[NAME] = ScrollSpy._jQueryInterface;
366 $$$1.fn[NAME].Constructor = ScrollSpy;
368 $$$1.fn[NAME].noConflict = function () {
369 $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
370 return ScrollSpy._jQueryInterface;
379 //# sourceMappingURL=scrollspy.js.map