/*!
* Bootstrap scrollspy.js v5.3.1 (https://getbootstrap.com/)
* Copyright 2011-2023 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('./base-component.js'), require('./dom/event-handler.js'), require('./dom/selector-engine.js'), require('./util/index.js')) :
typeof define === 'function' && define.amd ? define(['./base-component', './dom/event-handler', './dom/selector-engine', './util/index'], factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Scrollspy = factory(global.BaseComponent, global.EventHandler, global.SelectorEngine, global.Index));
})(this, (function (BaseComponent, EventHandler, SelectorEngine, index_js) { 'use strict';
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, _toPropertyKey(descriptor.key), descriptor);
}
}
function _createClass(Constructor, protoProps, staticProps) {
if (protoProps) _defineProperties(Constructor.prototype, protoProps);
if (staticProps) _defineProperties(Constructor, staticProps);
Object.defineProperty(Constructor, "prototype", {
writable: false
});
return Constructor;
}
function _inheritsLoose(subClass, superClass) {
subClass.prototype = Object.create(superClass.prototype);
subClass.prototype.constructor = subClass;
_setPrototypeOf(subClass, superClass);
}
function _setPrototypeOf(o, p) {
_setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) {
o.__proto__ = p;
return o;
};
return _setPrototypeOf(o, p);
}
function _unsupportedIterableToArray(o, minLen) {
if (!o) return;
if (typeof o === "string") return _arrayLikeToArray(o, minLen);
var n = Object.prototype.toString.call(o).slice(8, -1);
if (n === "Object" && o.constructor) n = o.constructor.name;
if (n === "Map" || n === "Set") return Array.from(o);
if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}
function _arrayLikeToArray(arr, len) {
if (len == null || len > arr.length) len = arr.length;
for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
return arr2;
}
function _createForOfIteratorHelperLoose(o, allowArrayLike) {
var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
if (it) return (it = it.call(o)).next.bind(it);
if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
if (it) o = it;
var i = 0;
return function () {
if (i >= o.length) return {
done: true
};
return {
done: false,
value: o[i++]
};
};
}
throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _toPrimitive(input, hint) {
if (typeof input !== "object" || input === null) return input;
var prim = input[Symbol.toPrimitive];
if (prim !== undefined) {
var res = prim.call(input, hint || "default");
if (typeof res !== "object") return res;
throw new TypeError("@@toPrimitive must return a primitive value.");
}
return (hint === "string" ? String : Number)(input);
}
function _toPropertyKey(arg) {
var key = _toPrimitive(arg, "string");
return typeof key === "symbol" ? key : String(key);
}
/**
* Constants
*/
var NAME = 'scrollspy';
var DATA_KEY = 'bs.scrollspy';
var EVENT_KEY = "." + DATA_KEY;
var DATA_API_KEY = '.data-api';
var EVENT_ACTIVATE = "activate" + EVENT_KEY;
var EVENT_CLICK = "click" + EVENT_KEY;
var EVENT_LOAD_DATA_API = "load" + EVENT_KEY + DATA_API_KEY;
var CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item';
var CLASS_NAME_ACTIVE = 'active';
var SELECTOR_DATA_SPY = '[data-bs-spy="scroll"]';
var SELECTOR_TARGET_LINKS = '[href]';
var SELECTOR_NAV_LIST_GROUP = '.nav, .list-group';
var SELECTOR_NAV_LINKS = '.nav-link';
var SELECTOR_NAV_ITEMS = '.nav-item';
var SELECTOR_LIST_ITEMS = '.list-group-item';
var SELECTOR_LINK_ITEMS = SELECTOR_NAV_LINKS + ", " + SELECTOR_NAV_ITEMS + " > " + SELECTOR_NAV_LINKS + ", " + SELECTOR_LIST_ITEMS;
var SELECTOR_DROPDOWN = '.dropdown';
var SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle';
var Default = {
offset: null,
// TODO: v6 @deprecated, keep it for backwards compatibility reasons
rootMargin: '0px 0px -25%',
smoothScroll: false,
target: null,
threshold: [0.1, 0.5, 1]
};
var DefaultType = {
offset: '(number|null)',
// TODO v6 @deprecated, keep it for backwards compatibility reasons
rootMargin: 'string',
smoothScroll: 'boolean',
target: 'element',
threshold: 'array'
};
/**
* Class definition
*/
var ScrollSpy = /*#__PURE__*/function (_BaseComponent) {
_inheritsLoose(ScrollSpy, _BaseComponent);
function ScrollSpy(element, config) {
var _this;
_this = _BaseComponent.call(this, element, config) || this;
// this._element is the observablesContainer and config.target the menu links wrapper
_this._targetLinks = new Map();
_this._observableSections = new Map();
_this._rootElement = getComputedStyle(_this._element).overflowY === 'visible' ? null : _this._element;
_this._activeTarget = null;
_this._observer = null;
_this._previousScrollData = {
visibleEntryTop: 0,
parentScrollTop: 0
};
_this.refresh(); // initialize
return _this;
}
// Getters
var _proto = ScrollSpy.prototype;
// Public
_proto.refresh = function refresh() {
this._initializeTargetsAndObservables();
this._maybeEnableSmoothScroll();
if (this._observer) {
this._observer.disconnect();
} else {
this._observer = this._getNewObserver();
}
for (var _iterator = _createForOfIteratorHelperLoose(this._observableSections.values()), _step; !(_step = _iterator()).done;) {
var section = _step.value;
this._observer.observe(section);
}
};
_proto.dispose = function dispose() {
this._observer.disconnect();
_BaseComponent.prototype.dispose.call(this);
}
// Private
;
_proto._configAfterMerge = function _configAfterMerge(config) {
// TODO: on v6 target should be given explicitly & remove the {target: 'ss-target'} case
config.target = index_js.getElement(config.target) || document.body;
// TODO: v6 Only for backwards compatibility reasons. Use rootMargin only
config.rootMargin = config.offset ? config.offset + "px 0px -30%" : config.rootMargin;
if (typeof config.threshold === 'string') {
config.threshold = config.threshold.split(',').map(function (value) {
return Number.parseFloat(value);
});
}
return config;
};
_proto._maybeEnableSmoothScroll = function _maybeEnableSmoothScroll() {
var _this2 = this;
if (!this._config.smoothScroll) {
return;
}
// unregister any previous listeners
EventHandler.off(this._config.target, EVENT_CLICK);
EventHandler.on(this._config.target, EVENT_CLICK, SELECTOR_TARGET_LINKS, function (event) {
var observableSection = _this2._observableSections.get(event.target.hash);
if (observableSection) {
event.preventDefault();
var root = _this2._rootElement || window;
var height = observableSection.offsetTop - _this2._element.offsetTop;
if (root.scrollTo) {
root.scrollTo({
top: height,
behavior: 'smooth'
});
return;
}
// Chrome 60 doesn't support `scrollTo`
root.scrollTop = height;
}
});
};
_proto._getNewObserver = function _getNewObserver() {
var _this3 = this;
var options = {
root: this._rootElement,
threshold: this._config.threshold,
rootMargin: this._config.rootMargin
};
return new IntersectionObserver(function (entries) {
return _this3._observerCallback(entries);
}, options);
}
// The logic of selection
;
_proto._observerCallback = function _observerCallback(entries) {
var _this4 = this;
var targetElement = function targetElement(entry) {
return _this4._targetLinks.get("#" + entry.target.id);
};
var activate = function activate(entry) {
_this4._previousScrollData.visibleEntryTop = entry.target.offsetTop;
_this4._process(targetElement(entry));
};
var parentScrollTop = (this._rootElement || document.documentElement).scrollTop;
var userScrollsDown = parentScrollTop >= this._previousScrollData.parentScrollTop;
this._previousScrollData.parentScrollTop = parentScrollTop;
for (var _iterator2 = _createForOfIteratorHelperLoose(entries), _step2; !(_step2 = _iterator2()).done;) {
var entry = _step2.value;
if (!entry.isIntersecting) {
this._activeTarget = null;
this._clearActiveClass(targetElement(entry));
continue;
}
var entryIsLowerThanPrevious = entry.target.offsetTop >= this._previousScrollData.visibleEntryTop;
// if we are scrolling down, pick the bigger offsetTop
if (userScrollsDown && entryIsLowerThanPrevious) {
activate(entry);
// if parent isn't scrolled, let's keep the first visible item, breaking the iteration
if (!parentScrollTop) {
return;
}
continue;
}
// if we are scrolling up, pick the smallest offsetTop
if (!userScrollsDown && !entryIsLowerThanPrevious) {
activate(entry);
}
}
};
_proto._initializeTargetsAndObservables = function _initializeTargetsAndObservables() {
this._targetLinks = new Map();
this._observableSections = new Map();
var targetLinks = SelectorEngine.find(SELECTOR_TARGET_LINKS, this._config.target);
for (var _iterator3 = _createForOfIteratorHelperLoose(targetLinks), _step3; !(_step3 = _iterator3()).done;) {
var anchor = _step3.value;
// ensure that the anchor has an id and is not disabled
if (!anchor.hash || index_js.isDisabled(anchor)) {
continue;
}
var observableSection = SelectorEngine.findOne(decodeURI(anchor.hash), this._element);
// ensure that the observableSection exists & is visible
if (index_js.isVisible(observableSection)) {
this._targetLinks.set(decodeURI(anchor.hash), anchor);
this._observableSections.set(anchor.hash, observableSection);
}
}
};
_proto._process = function _process(target) {
if (this._activeTarget === target) {
return;
}
this._clearActiveClass(this._config.target);
this._activeTarget = target;
target.classList.add(CLASS_NAME_ACTIVE);
this._activateParents(target);
EventHandler.trigger(this._element, EVENT_ACTIVATE, {
relatedTarget: target
});
};
_proto._activateParents = function _activateParents(target) {
// Activate dropdown parents
if (target.classList.contains(CLASS_NAME_DROPDOWN_ITEM)) {
SelectorEngine.findOne(SELECTOR_DROPDOWN_TOGGLE, target.closest(SELECTOR_DROPDOWN)).classList.add(CLASS_NAME_ACTIVE);
return;
}
for (var _iterator4 = _createForOfIteratorHelperLoose(SelectorEngine.parents(target, SELECTOR_NAV_LIST_GROUP)), _step4; !(_step4 = _iterator4()).done;) {
var listGroup = _step4.value;
// Set triggered links parents as active
// With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
for (var _iterator5 = _createForOfIteratorHelperLoose(SelectorEngine.prev(listGroup, SELECTOR_LINK_ITEMS)), _step5; !(_step5 = _iterator5()).done;) {
var item = _step5.value;
item.classList.add(CLASS_NAME_ACTIVE);
}
}
};
_proto._clearActiveClass = function _clearActiveClass(parent) {
parent.classList.remove(CLASS_NAME_ACTIVE);
var activeNodes = SelectorEngine.find(SELECTOR_TARGET_LINKS + "." + CLASS_NAME_ACTIVE, parent);
for (var _iterator6 = _createForOfIteratorHelperLoose(activeNodes), _step6; !(_step6 = _iterator6()).done;) {
var node = _step6.value;
node.classList.remove(CLASS_NAME_ACTIVE);
}
}
// Static
;
ScrollSpy.jQueryInterface = function jQueryInterface(config) {
return this.each(function () {
var data = ScrollSpy.getOrCreateInstance(this, config);
if (typeof config !== 'string') {
return;
}
if (data[config] === undefined || config.startsWith('_') || config === 'constructor') {
throw new TypeError("No method named \"" + config + "\"");
}
data[config]();
});
};
_createClass(ScrollSpy, null, [{
key: "Default",
get: function get() {
return Default;
}
}, {
key: "DefaultType",
get: function get() {
return DefaultType;
}
}, {
key: "NAME",
get: function get() {
return NAME;
}
}]);
return ScrollSpy;
}(BaseComponent);
/**
* Data API implementation
*/
EventHandler.on(window, EVENT_LOAD_DATA_API, function () {
for (var _iterator7 = _createForOfIteratorHelperLoose(SelectorEngine.find(SELECTOR_DATA_SPY)), _step7; !(_step7 = _iterator7()).done;) {
var spy = _step7.value;
ScrollSpy.getOrCreateInstance(spy);
}
});
/**
* jQuery
*/
index_js.defineJQueryPlugin(ScrollSpy);
return ScrollSpy;
}));
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