-function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

-

-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): 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';

- 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.OFFSET : OffsetMethod.POSITION;

- 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 = _extends({}, 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 <ul> and <nav> markup a parent is the previous sibling of any nav ancestor

-

- $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

-

- $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_ITEMS).children(Selector.NAV_LINKS).addClass(ClassName.ACTIVE);

- }

-

- $(this._scrollElement).trigger(Event.ACTIVATE, {

- relatedTarget: target

- });

- };

-

- _proto._clear = function _clear() {

- $(this._selector).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE);

- }; // Static

-

-

- ScrollSpy._jQueryInterface = function _jQueryInterface(config) {

- return this.each(function () {

- var data = $(this).data(DATA_KEY);

-

- var _config = typeof config === 'object' && config;

-

- if (!data) {

- data = new ScrollSpy(this, _config);

- $(this).data(DATA_KEY, data);

- }

-

- if (typeof config === 'string') {

- if (typeof data[config] === 'undefined') {

- throw new TypeError("No method named \"" + config + "\"");

- }

-

- data[config]();

- }

- });

- };

-

- _createClass(ScrollSpy, null, [{

- key: "VERSION",

- get: function get() {

- return VERSION;

- }

- }, {

- key: "Default",

- get: function get() {

- return Default;

- }

- }]);

-

- return ScrollSpy;

- }();

- /**

- * ------------------------------------------------------------------------

- * Data Api implementation

- * ------------------------------------------------------------------------

- */

-

-

- $(window).on(Event.LOAD_DATA_API, function () {

- var scrollSpys = $.makeArray($(Selector.DATA_SPY));

-

- for (var i = scrollSpys.length; i--;) {

- var $spy = $(scrollSpys[i]);

-

- ScrollSpy._jQueryInterface.call($spy, $spy.data());

- }

- });

- /**

- * ------------------------------------------------------------------------

- * jQuery

- * ------------------------------------------------------------------------

- */

-

- $.fn[NAME] = ScrollSpy._jQueryInterface;

- $.fn[NAME].Constructor = ScrollSpy;

-

- $.fn[NAME].noConflict = function () {

- $.fn[NAME] = JQUERY_NO_CONFLICT;

- return ScrollSpy._jQueryInterface;

- };

-

- return ScrollSpy;

-}($);

-//# sourceMappingURL=scrollspy.js.map \ No newline at end of file