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/*!
* Bootstrap scrollspy.js v5.1.0 (https://getbootstrap.com/)
* Copyright 2011-2021 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
*/
(function (global, factory) {
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')) :
typeof define === 'function' && define.amd ? define(['./dom/event-handler', './dom/manipulator', './dom/selector-engine', './base-component'], factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.ScrollSpy = factory(global.EventHandler, global.Manipulator, global.SelectorEngine, global.Base));
}(this, (function (EventHandler, Manipulator, SelectorEngine, BaseComponent) { 'use strict';
function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
var EventHandler__default = /*#__PURE__*/_interopDefaultLegacy(EventHandler);
var Manipulator__default = /*#__PURE__*/_interopDefaultLegacy(Manipulator);
var SelectorEngine__default = /*#__PURE__*/_interopDefaultLegacy(SelectorEngine);
var BaseComponent__default = /*#__PURE__*/_interopDefaultLegacy(BaseComponent);
/**
* --------------------------------------------------------------------------
* Bootstrap (v5.1.0): util/index.js
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
* --------------------------------------------------------------------------
*/
const toType = obj => {
if (obj === null || obj === undefined) {
return `${obj}`;
}
return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
};
const getSelector = element => {
let selector = element.getAttribute('data-bs-target');
if (!selector || selector === '#') {
let hrefAttr = element.getAttribute('href'); // The only valid content that could double as a selector are IDs or classes,
// so everything starting with `#` or `.`. If a "real" URL is used as the selector,
// `document.querySelector` will rightfully complain it is invalid.
// See https://github.com/twbs/bootstrap/issues/32273
if (!hrefAttr || !hrefAttr.includes('#') && !hrefAttr.startsWith('.')) {
return null;
} // Just in case some CMS puts out a full URL with the anchor appended
if (hrefAttr.includes('#') && !hrefAttr.startsWith('#')) {
hrefAttr = `#${hrefAttr.split('#')[1]}`;
}
selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : null;
}
return selector;
};
const getSelectorFromElement = element => {
const selector = getSelector(element);
if (selector) {
return document.querySelector(selector) ? selector : null;
}
return null;
};
const isElement = obj => {
if (!obj || typeof obj !== 'object') {
return false;
}
if (typeof obj.jquery !== 'undefined') {
obj = obj[0];
}
return typeof obj.nodeType !== 'undefined';
};
const getElement = obj => {
if (isElement(obj)) {
// it's a jQuery object or a node element
return obj.jquery ? obj[0] : obj;
}
if (typeof obj === 'string' && obj.length > 0) {
return document.querySelector(obj);
}
return null;
};
const typeCheckConfig = (componentName, config, configTypes) => {
Object.keys(configTypes).forEach(property => {
const expectedTypes = configTypes[property];
const value = config[property];
const valueType = value && isElement(value) ? 'element' : toType(value);
if (!new RegExp(expectedTypes).test(valueType)) {
throw new TypeError(`${componentName.toUpperCase()}: Option "${property}" provided type "${valueType}" but expected type "${expectedTypes}".`);
}
});
};
const getjQuery = () => {
const {
jQuery
} = window;
if (jQuery && !document.body.hasAttribute('data-bs-no-jquery')) {
return jQuery;
}
return null;
};
const DOMContentLoadedCallbacks = [];
const onDOMContentLoaded = callback => {
if (document.readyState === 'loading') {
// add listener on the first call when the document is in loading state
if (!DOMContentLoadedCallbacks.length) {
document.addEventListener('DOMContentLoaded', () => {
DOMContentLoadedCallbacks.forEach(callback => callback());
});
}
DOMContentLoadedCallbacks.push(callback);
} else {
callback();
}
};
const defineJQueryPlugin = plugin => {
onDOMContentLoaded(() => {
const $ = getjQuery();
/* istanbul ignore if */
if ($) {
const name = plugin.NAME;
const JQUERY_NO_CONFLICT = $.fn[name];
$.fn[name] = plugin.jQueryInterface;
$.fn[name].Constructor = plugin;
$.fn[name].noConflict = () => {
$.fn[name] = JQUERY_NO_CONFLICT;
return plugin.jQueryInterface;
};
}
});
};
/**
* --------------------------------------------------------------------------
* Bootstrap (v5.1.0): scrollspy.js
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
* --------------------------------------------------------------------------
*/
/**
* ------------------------------------------------------------------------
* Constants
* ------------------------------------------------------------------------
*/
const NAME = 'scrollspy';
const DATA_KEY = 'bs.scrollspy';
const EVENT_KEY = `.${DATA_KEY}`;
const DATA_API_KEY = '.data-api';
const Default = {
offset: 10,
method: 'auto',
target: ''
};
const DefaultType = {
offset: 'number',
method: 'string',
target: '(string|element)'
};
const EVENT_ACTIVATE = `activate${EVENT_KEY}`;
const EVENT_SCROLL = `scroll${EVENT_KEY}`;
const EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`;
const CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item';
const CLASS_NAME_ACTIVE = 'active';
const SELECTOR_DATA_SPY = '[data-bs-spy="scroll"]';
const SELECTOR_NAV_LIST_GROUP = '.nav, .list-group';
const SELECTOR_NAV_LINKS = '.nav-link';
const SELECTOR_NAV_ITEMS = '.nav-item';
const SELECTOR_LIST_ITEMS = '.list-group-item';
const SELECTOR_LINK_ITEMS = `${SELECTOR_NAV_LINKS}, ${SELECTOR_LIST_ITEMS}, .${CLASS_NAME_DROPDOWN_ITEM}`;
const SELECTOR_DROPDOWN = '.dropdown';
const SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle';
const METHOD_OFFSET = 'offset';
const METHOD_POSITION = 'position';
/**
* ------------------------------------------------------------------------
* Class Definition
* ------------------------------------------------------------------------
*/
class ScrollSpy extends BaseComponent__default['default'] {
constructor(element, config) {
super(element);
this._scrollElement = this._element.tagName === 'BODY' ? window : this._element;
this._config = this._getConfig(config);
this._offsets = [];
this._targets = [];
this._activeTarget = null;
this._scrollHeight = 0;
EventHandler__default['default'].on(this._scrollElement, EVENT_SCROLL, () => this._process());
this.refresh();
this._process();
} // Getters
static get Default() {
return Default;
}
static get NAME() {
return NAME;
} // Public
refresh() {
const autoMethod = this._scrollElement === this._scrollElement.window ? METHOD_OFFSET : METHOD_POSITION;
const offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
const offsetBase = offsetMethod === METHOD_POSITION ? this._getScrollTop() : 0;
this._offsets = [];
this._targets = [];
this._scrollHeight = this._getScrollHeight();
const targets = SelectorEngine__default['default'].find(SELECTOR_LINK_ITEMS, this._config.target);
targets.map(element => {
const targetSelector = getSelectorFromElement(element);
const target = targetSelector ? SelectorEngine__default['default'].findOne(targetSelector) : null;
if (target) {
const targetBCR = target.getBoundingClientRect();
if (targetBCR.width || targetBCR.height) {
return [Manipulator__default['default'][offsetMethod](target).top + offsetBase, targetSelector];
}
}
return null;
}).filter(item => item).sort((a, b) => a[0] - b[0]).forEach(item => {
this._offsets.push(item[0]);
this._targets.push(item[1]);
});
}
dispose() {
EventHandler__default['default'].off(this._scrollElement, EVENT_KEY);
super.dispose();
} // Private
_getConfig(config) {
config = { ...Default,
...Manipulator__default['default'].getDataAttributes(this._element),
...(typeof config === 'object' && config ? config : {})
};
config.target = getElement(config.target) || document.documentElement;
typeCheckConfig(NAME, config, DefaultType);
return config;
}
_getScrollTop() {
return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
}
_getScrollHeight() {
return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
}
_getOffsetHeight() {
return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
}
_process() {
const scrollTop = this._getScrollTop() + this._config.offset;
const scrollHeight = this._getScrollHeight();
const maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
if (this._scrollHeight !== scrollHeight) {
this.refresh();
}
if (scrollTop >= maxScroll) {
const 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 (let i = this._offsets.length; i--;) {
const 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]);
}
}
}
_activate(target) {
this._activeTarget = target;
this._clear();
const queries = SELECTOR_LINK_ITEMS.split(',').map(selector => `${selector}[data-bs-target="${target}"],${selector}[href="${target}"]`);
const link = SelectorEngine__default['default'].findOne(queries.join(','), this._config.target);
link.classList.add(CLASS_NAME_ACTIVE);
if (link.classList.contains(CLASS_NAME_DROPDOWN_ITEM)) {
SelectorEngine__default['default'].findOne(SELECTOR_DROPDOWN_TOGGLE, link.closest(SELECTOR_DROPDOWN)).classList.add(CLASS_NAME_ACTIVE);
} else {
SelectorEngine__default['default'].parents(link, SELECTOR_NAV_LIST_GROUP).forEach(listGroup => {
// Set triggered links parents as active
// With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
SelectorEngine__default['default'].prev(listGroup, `${SELECTOR_NAV_LINKS}, ${SELECTOR_LIST_ITEMS}`).forEach(item => item.classList.add(CLASS_NAME_ACTIVE)); // Handle special case when .nav-link is inside .nav-item
SelectorEngine__default['default'].prev(listGroup, SELECTOR_NAV_ITEMS).forEach(navItem => {
SelectorEngine__default['default'].children(navItem, SELECTOR_NAV_LINKS).forEach(item => item.classList.add(CLASS_NAME_ACTIVE));
});
});
}
EventHandler__default['default'].trigger(this._scrollElement, EVENT_ACTIVATE, {
relatedTarget: target
});
}
_clear() {
SelectorEngine__default['default'].find(SELECTOR_LINK_ITEMS, this._config.target).filter(node => node.classList.contains(CLASS_NAME_ACTIVE)).forEach(node => node.classList.remove(CLASS_NAME_ACTIVE));
} // Static
static jQueryInterface(config) {
return this.each(function () {
const data = ScrollSpy.getOrCreateInstance(this, config);
if (typeof config !== 'string') {
return;
}
if (typeof data[config] === 'undefined') {
throw new TypeError(`No method named "${config}"`);
}
data[config]();
});
}
}
/**
* ------------------------------------------------------------------------
* Data Api implementation
* ------------------------------------------------------------------------
*/
EventHandler__default['default'].on(window, EVENT_LOAD_DATA_API, () => {
SelectorEngine__default['default'].find(SELECTOR_DATA_SPY).forEach(spy => new ScrollSpy(spy));
});
/**
* ------------------------------------------------------------------------
* jQuery
* ------------------------------------------------------------------------
* add .ScrollSpy to jQuery only if jQuery is present
*/
defineJQueryPlugin(ScrollSpy);
return ScrollSpy;
})));
//# sourceMappingURL=scrollspy.js.map