| 1 | /*!
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| 2 | * Bootstrap scrollspy.js v5.1.3 (https://getbootstrap.com/)
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| 3 | * Copyright 2011-2021 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
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| 4 | * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
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| 5 | */
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| 6 | (function (global, factory) {
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| 7 | typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('./dom/event-handler.js'), require('./dom/manipulator.js'), require('./dom/selector-engine.js'), require('./base-component.js')) :
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| 8 | typeof define === 'function' && define.amd ? define(['./dom/event-handler', './dom/manipulator', './dom/selector-engine', './base-component'], factory) :
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| 9 | (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.ScrollSpy = factory(global.EventHandler, global.Manipulator, global.SelectorEngine, global.Base));
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| 10 | })(this, (function (EventHandler, Manipulator, SelectorEngine, BaseComponent) { 'use strict';
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| 11 |
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| 12 | const _interopDefaultLegacy = e => e && typeof e === 'object' && 'default' in e ? e : { default: e };
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| 13 |
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| 14 | const EventHandler__default = /*#__PURE__*/_interopDefaultLegacy(EventHandler);
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| 15 | const Manipulator__default = /*#__PURE__*/_interopDefaultLegacy(Manipulator);
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| 16 | const SelectorEngine__default = /*#__PURE__*/_interopDefaultLegacy(SelectorEngine);
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| 17 | const BaseComponent__default = /*#__PURE__*/_interopDefaultLegacy(BaseComponent);
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| 18 |
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| 19 | /**
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| 20 | * --------------------------------------------------------------------------
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| 21 | * Bootstrap (v5.1.3): util/index.js
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| 22 | * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
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| 23 | * --------------------------------------------------------------------------
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| 24 | */
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| 25 |
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| 26 | const toType = obj => {
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| 27 | if (obj === null || obj === undefined) {
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| 28 | return `${obj}`;
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| 29 | }
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| 30 |
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| 31 | return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
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| 32 | };
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| 33 |
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| 34 | const getSelector = element => {
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| 35 | let selector = element.getAttribute('data-bs-target');
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| 36 |
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| 37 | if (!selector || selector === '#') {
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| 38 | let hrefAttr = element.getAttribute('href'); // The only valid content that could double as a selector are IDs or classes,
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| 39 | // so everything starting with `#` or `.`. If a "real" URL is used as the selector,
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| 40 | // `document.querySelector` will rightfully complain it is invalid.
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| 41 | // See https://github.com/twbs/bootstrap/issues/32273
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| 42 |
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| 43 | if (!hrefAttr || !hrefAttr.includes('#') && !hrefAttr.startsWith('.')) {
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| 44 | return null;
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| 45 | } // Just in case some CMS puts out a full URL with the anchor appended
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| 46 |
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| 47 |
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| 48 | if (hrefAttr.includes('#') && !hrefAttr.startsWith('#')) {
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| 49 | hrefAttr = `#${hrefAttr.split('#')[1]}`;
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| 50 | }
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| 51 |
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| 52 | selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : null;
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| 53 | }
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| 54 |
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| 55 | return selector;
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| 56 | };
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| 57 |
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| 58 | const getSelectorFromElement = element => {
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| 59 | const selector = getSelector(element);
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| 60 |
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| 61 | if (selector) {
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| 62 | return document.querySelector(selector) ? selector : null;
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| 63 | }
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| 64 |
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| 65 | return null;
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| 66 | };
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| 67 |
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| 68 | const isElement = obj => {
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| 69 | if (!obj || typeof obj !== 'object') {
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| 70 | return false;
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| 71 | }
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| 72 |
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| 73 | if (typeof obj.jquery !== 'undefined') {
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| 74 | obj = obj[0];
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| 75 | }
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| 76 |
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| 77 | return typeof obj.nodeType !== 'undefined';
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| 78 | };
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| 79 |
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| 80 | const getElement = obj => {
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| 81 | if (isElement(obj)) {
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| 82 | // it's a jQuery object or a node element
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| 83 | return obj.jquery ? obj[0] : obj;
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| 84 | }
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| 85 |
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| 86 | if (typeof obj === 'string' && obj.length > 0) {
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| 87 | return document.querySelector(obj);
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| 88 | }
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| 89 |
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| 90 | return null;
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| 91 | };
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| 92 |
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| 93 | const typeCheckConfig = (componentName, config, configTypes) => {
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| 94 | Object.keys(configTypes).forEach(property => {
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| 95 | const expectedTypes = configTypes[property];
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| 96 | const value = config[property];
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| 97 | const valueType = value && isElement(value) ? 'element' : toType(value);
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| 98 |
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| 99 | if (!new RegExp(expectedTypes).test(valueType)) {
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| 100 | throw new TypeError(`${componentName.toUpperCase()}: Option "${property}" provided type "${valueType}" but expected type "${expectedTypes}".`);
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| 101 | }
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| 102 | });
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| 103 | };
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| 104 |
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| 105 | const getjQuery = () => {
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| 106 | const {
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| 107 | jQuery
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| 108 | } = window;
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| 109 |
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| 110 | if (jQuery && !document.body.hasAttribute('data-bs-no-jquery')) {
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| 111 | return jQuery;
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| 112 | }
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| 113 |
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| 114 | return null;
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| 115 | };
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| 116 |
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| 117 | const DOMContentLoadedCallbacks = [];
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| 118 |
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| 119 | const onDOMContentLoaded = callback => {
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| 120 | if (document.readyState === 'loading') {
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| 121 | // add listener on the first call when the document is in loading state
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| 122 | if (!DOMContentLoadedCallbacks.length) {
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| 123 | document.addEventListener('DOMContentLoaded', () => {
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| 124 | DOMContentLoadedCallbacks.forEach(callback => callback());
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| 125 | });
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| 126 | }
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| 127 |
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| 128 | DOMContentLoadedCallbacks.push(callback);
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| 129 | } else {
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| 130 | callback();
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| 131 | }
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| 132 | };
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| 133 |
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| 134 | const defineJQueryPlugin = plugin => {
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| 135 | onDOMContentLoaded(() => {
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| 136 | const $ = getjQuery();
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| 137 | /* istanbul ignore if */
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| 138 |
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| 139 | if ($) {
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| 140 | const name = plugin.NAME;
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| 141 | const JQUERY_NO_CONFLICT = $.fn[name];
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| 142 | $.fn[name] = plugin.jQueryInterface;
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| 143 | $.fn[name].Constructor = plugin;
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| 144 |
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| 145 | $.fn[name].noConflict = () => {
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| 146 | $.fn[name] = JQUERY_NO_CONFLICT;
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| 147 | return plugin.jQueryInterface;
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| 148 | };
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| 149 | }
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| 150 | });
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| 151 | };
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| 152 |
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| 153 | /**
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| 154 | * --------------------------------------------------------------------------
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| 155 | * Bootstrap (v5.1.3): scrollspy.js
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| 156 | * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
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| 157 | * --------------------------------------------------------------------------
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| 158 | */
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| 159 | /**
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| 160 | * ------------------------------------------------------------------------
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| 161 | * Constants
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| 162 | * ------------------------------------------------------------------------
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| 163 | */
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| 164 |
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| 165 | const NAME = 'scrollspy';
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| 166 | const DATA_KEY = 'bs.scrollspy';
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| 167 | const EVENT_KEY = `.${DATA_KEY}`;
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| 168 | const DATA_API_KEY = '.data-api';
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| 169 | const Default = {
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| 170 | offset: 10,
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| 171 | method: 'auto',
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| 172 | target: ''
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| 173 | };
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| 174 | const DefaultType = {
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| 175 | offset: 'number',
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| 176 | method: 'string',
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| 177 | target: '(string|element)'
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| 178 | };
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| 179 | const EVENT_ACTIVATE = `activate${EVENT_KEY}`;
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| 180 | const EVENT_SCROLL = `scroll${EVENT_KEY}`;
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| 181 | const EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`;
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| 182 | const CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item';
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| 183 | const CLASS_NAME_ACTIVE = 'active';
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| 184 | const SELECTOR_DATA_SPY = '[data-bs-spy="scroll"]';
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| 185 | const SELECTOR_NAV_LIST_GROUP = '.nav, .list-group';
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| 186 | const SELECTOR_NAV_LINKS = '.nav-link';
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| 187 | const SELECTOR_NAV_ITEMS = '.nav-item';
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| 188 | const SELECTOR_LIST_ITEMS = '.list-group-item';
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| 189 | const SELECTOR_LINK_ITEMS = `${SELECTOR_NAV_LINKS}, ${SELECTOR_LIST_ITEMS}, .${CLASS_NAME_DROPDOWN_ITEM}`;
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| 190 | const SELECTOR_DROPDOWN = '.dropdown';
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| 191 | const SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle';
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| 192 | const METHOD_OFFSET = 'offset';
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| 193 | const METHOD_POSITION = 'position';
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| 194 | /**
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| 195 | * ------------------------------------------------------------------------
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| 196 | * Class Definition
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| 197 | * ------------------------------------------------------------------------
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| 198 | */
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| 199 |
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| 200 | class ScrollSpy extends BaseComponent__default.default {
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| 201 | constructor(element, config) {
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| 202 | super(element);
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| 203 | this._scrollElement = this._element.tagName === 'BODY' ? window : this._element;
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| 204 | this._config = this._getConfig(config);
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| 205 | this._offsets = [];
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| 206 | this._targets = [];
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| 207 | this._activeTarget = null;
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| 208 | this._scrollHeight = 0;
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| 209 | EventHandler__default.default.on(this._scrollElement, EVENT_SCROLL, () => this._process());
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| 210 | this.refresh();
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| 211 |
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| 212 | this._process();
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| 213 | } // Getters
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| 214 |
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| 215 |
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| 216 | static get Default() {
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| 217 | return Default;
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| 218 | }
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| 219 |
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| 220 | static get NAME() {
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| 221 | return NAME;
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| 222 | } // Public
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| 223 |
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| 224 |
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| 225 | refresh() {
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| 226 | const autoMethod = this._scrollElement === this._scrollElement.window ? METHOD_OFFSET : METHOD_POSITION;
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| 227 | const offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
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| 228 | const offsetBase = offsetMethod === METHOD_POSITION ? this._getScrollTop() : 0;
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| 229 | this._offsets = [];
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| 230 | this._targets = [];
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| 231 | this._scrollHeight = this._getScrollHeight();
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| 232 | const targets = SelectorEngine__default.default.find(SELECTOR_LINK_ITEMS, this._config.target);
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| 233 | targets.map(element => {
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| 234 | const targetSelector = getSelectorFromElement(element);
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| 235 | const target = targetSelector ? SelectorEngine__default.default.findOne(targetSelector) : null;
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| 236 |
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| 237 | if (target) {
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| 238 | const targetBCR = target.getBoundingClientRect();
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| 239 |
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| 240 | if (targetBCR.width || targetBCR.height) {
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| 241 | return [Manipulator__default.default[offsetMethod](target).top + offsetBase, targetSelector];
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| 242 | }
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| 243 | }
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| 244 |
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| 245 | return null;
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| 246 | }).filter(item => item).sort((a, b) => a[0] - b[0]).forEach(item => {
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| 247 | this._offsets.push(item[0]);
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| 248 |
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| 249 | this._targets.push(item[1]);
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| 250 | });
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| 251 | }
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| 252 |
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| 253 | dispose() {
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| 254 | EventHandler__default.default.off(this._scrollElement, EVENT_KEY);
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| 255 | super.dispose();
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| 256 | } // Private
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| 257 |
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| 258 |
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| 259 | _getConfig(config) {
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| 260 | config = { ...Default,
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| 261 | ...Manipulator__default.default.getDataAttributes(this._element),
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| 262 | ...(typeof config === 'object' && config ? config : {})
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| 263 | };
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| 264 | config.target = getElement(config.target) || document.documentElement;
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| 265 | typeCheckConfig(NAME, config, DefaultType);
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| 266 | return config;
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| 267 | }
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| 268 |
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| 269 | _getScrollTop() {
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| 270 | return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
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| 271 | }
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| 272 |
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| 273 | _getScrollHeight() {
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| 274 | return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
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| 275 | }
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| 276 |
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| 277 | _getOffsetHeight() {
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| 278 | return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
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| 279 | }
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| 280 |
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| 281 | _process() {
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| 282 | const scrollTop = this._getScrollTop() + this._config.offset;
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| 283 |
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| 284 | const scrollHeight = this._getScrollHeight();
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| 285 |
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| 286 | const maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
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| 287 |
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| 288 | if (this._scrollHeight !== scrollHeight) {
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| 289 | this.refresh();
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| 290 | }
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| 291 |
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| 292 | if (scrollTop >= maxScroll) {
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| 293 | const target = this._targets[this._targets.length - 1];
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| 294 |
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| 295 | if (this._activeTarget !== target) {
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| 296 | this._activate(target);
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| 297 | }
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| 298 |
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| 299 | return;
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| 300 | }
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| 301 |
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| 302 | if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
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| 303 | this._activeTarget = null;
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| 304 |
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| 305 | this._clear();
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| 306 |
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| 307 | return;
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| 308 | }
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| 309 |
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| 310 | for (let i = this._offsets.length; i--;) {
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| 311 | const isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);
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| 312 |
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| 313 | if (isActiveTarget) {
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| 314 | this._activate(this._targets[i]);
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| 315 | }
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| 316 | }
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| 317 | }
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| 318 |
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| 319 | _activate(target) {
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| 320 | this._activeTarget = target;
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| 321 |
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| 322 | this._clear();
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| 323 |
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| 324 | const queries = SELECTOR_LINK_ITEMS.split(',').map(selector => `${selector}[data-bs-target="${target}"],${selector}[href="${target}"]`);
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| 325 | const link = SelectorEngine__default.default.findOne(queries.join(','), this._config.target);
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| 326 | link.classList.add(CLASS_NAME_ACTIVE);
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| 327 |
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| 328 | if (link.classList.contains(CLASS_NAME_DROPDOWN_ITEM)) {
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| 329 | SelectorEngine__default.default.findOne(SELECTOR_DROPDOWN_TOGGLE, link.closest(SELECTOR_DROPDOWN)).classList.add(CLASS_NAME_ACTIVE);
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| 330 | } else {
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| 331 | SelectorEngine__default.default.parents(link, SELECTOR_NAV_LIST_GROUP).forEach(listGroup => {
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| 332 | // Set triggered links parents as active
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| 333 | // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
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| 334 | SelectorEngine__default.default.prev(listGroup, `${SELECTOR_NAV_LINKS}, ${SELECTOR_LIST_ITEMS}`).forEach(item => item.classList.add(CLASS_NAME_ACTIVE)); // Handle special case when .nav-link is inside .nav-item
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| 335 |
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| 336 | SelectorEngine__default.default.prev(listGroup, SELECTOR_NAV_ITEMS).forEach(navItem => {
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| 337 | SelectorEngine__default.default.children(navItem, SELECTOR_NAV_LINKS).forEach(item => item.classList.add(CLASS_NAME_ACTIVE));
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| 338 | });
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| 339 | });
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| 340 | }
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| 341 |
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| 342 | EventHandler__default.default.trigger(this._scrollElement, EVENT_ACTIVATE, {
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| 343 | relatedTarget: target
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| 344 | });
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| 345 | }
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| 346 |
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| 347 | _clear() {
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| 348 | SelectorEngine__default.default.find(SELECTOR_LINK_ITEMS, this._config.target).filter(node => node.classList.contains(CLASS_NAME_ACTIVE)).forEach(node => node.classList.remove(CLASS_NAME_ACTIVE));
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| 349 | } // Static
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| 350 |
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| 351 |
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| 352 | static jQueryInterface(config) {
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| 353 | return this.each(function () {
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| 354 | const data = ScrollSpy.getOrCreateInstance(this, config);
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| 355 |
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| 356 | if (typeof config !== 'string') {
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| 357 | return;
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| 358 | }
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| 359 |
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| 360 | if (typeof data[config] === 'undefined') {
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| 361 | throw new TypeError(`No method named "${config}"`);
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| 362 | }
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| 363 |
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| 364 | data[config]();
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| 365 | });
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| 366 | }
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| 367 |
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| 368 | }
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| 369 | /**
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| 370 | * ------------------------------------------------------------------------
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| 371 | * Data Api implementation
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| 372 | * ------------------------------------------------------------------------
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| 373 | */
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| 374 |
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| 375 |
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| 376 | EventHandler__default.default.on(window, EVENT_LOAD_DATA_API, () => {
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| 377 | SelectorEngine__default.default.find(SELECTOR_DATA_SPY).forEach(spy => new ScrollSpy(spy));
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| 378 | });
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| 379 | /**
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| 380 | * ------------------------------------------------------------------------
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| 381 | * jQuery
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| 382 | * ------------------------------------------------------------------------
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| 383 | * add .ScrollSpy to jQuery only if jQuery is present
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| 384 | */
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| 385 |
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| 386 | defineJQueryPlugin(ScrollSpy);
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| 387 |
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| 388 | return ScrollSpy;
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| 389 |
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| 390 | }));
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| 391 | //# sourceMappingURL=scrollspy.js.map
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