452 lines
14 KiB
JavaScript
452 lines
14 KiB
JavaScript
/*!
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* Bootstrap scrollspy.js v4.3.1 (https://getbootstrap.com/)
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* Copyright 2011-2019 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
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*/
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('./dom/data.js'), require('./dom/eventHandler.js'), require('./dom/manipulator.js'), require('./dom/selectorEngine.js')) :
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typeof define === 'function' && define.amd ? define(['./dom/data.js', './dom/eventHandler.js', './dom/manipulator.js', './dom/selectorEngine.js'], factory) :
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(global = global || self, global.ScrollSpy = factory(global.Data, global.EventHandler, global.Manipulator, global.SelectorEngine));
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}(this, function (Data, EventHandler, Manipulator, SelectorEngine) { 'use strict';
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Data = Data && Data.hasOwnProperty('default') ? Data['default'] : Data;
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EventHandler = EventHandler && EventHandler.hasOwnProperty('default') ? EventHandler['default'] : EventHandler;
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Manipulator = Manipulator && Manipulator.hasOwnProperty('default') ? Manipulator['default'] : Manipulator;
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SelectorEngine = SelectorEngine && SelectorEngine.hasOwnProperty('default') ? SelectorEngine['default'] : SelectorEngine;
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function _defineProperties(target, props) {
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for (var i = 0; i < props.length; i++) {
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var descriptor = props[i];
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descriptor.enumerable = descriptor.enumerable || false;
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descriptor.configurable = true;
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if ("value" in descriptor) descriptor.writable = true;
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Object.defineProperty(target, descriptor.key, descriptor);
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}
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}
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function _createClass(Constructor, protoProps, staticProps) {
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if (protoProps) _defineProperties(Constructor.prototype, protoProps);
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if (staticProps) _defineProperties(Constructor, staticProps);
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return Constructor;
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}
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function _defineProperty(obj, key, value) {
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if (key in obj) {
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Object.defineProperty(obj, key, {
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value: value,
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enumerable: true,
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configurable: true,
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writable: true
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});
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} else {
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obj[key] = value;
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}
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return obj;
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}
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function _objectSpread(target) {
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for (var i = 1; i < arguments.length; i++) {
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var source = arguments[i] != null ? arguments[i] : {};
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var ownKeys = Object.keys(source);
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if (typeof Object.getOwnPropertySymbols === 'function') {
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ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
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return Object.getOwnPropertyDescriptor(source, sym).enumerable;
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}));
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}
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ownKeys.forEach(function (key) {
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_defineProperty(target, key, source[key]);
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});
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}
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return target;
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}
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/**
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* --------------------------------------------------------------------------
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* Bootstrap (v4.3.1): util/index.js
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
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* --------------------------------------------------------------------------
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*/
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var MAX_UID = 1000000;
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var _window = window,
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jQuery = _window.jQuery; // Shoutout AngusCroll (https://goo.gl/pxwQGp)
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var toType = function toType(obj) {
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return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
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};
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/**
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* --------------------------------------------------------------------------
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* Public Util Api
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* --------------------------------------------------------------------------
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*/
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var getUID = function getUID(prefix) {
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do {
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// eslint-disable-next-line no-bitwise
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prefix += ~~(Math.random() * MAX_UID); // "~~" acts like a faster Math.floor() here
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} while (document.getElementById(prefix));
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return prefix;
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};
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var getSelectorFromElement = function getSelectorFromElement(element) {
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var selector = element.getAttribute('data-target');
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if (!selector || selector === '#') {
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var hrefAttr = element.getAttribute('href');
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selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : '';
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}
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try {
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return document.querySelector(selector) ? selector : null;
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} catch (error) {
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return null;
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}
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};
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var isElement = function isElement(obj) {
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return (obj[0] || obj).nodeType;
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};
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var typeCheckConfig = function typeCheckConfig(componentName, config, configTypes) {
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Object.keys(configTypes).forEach(function (property) {
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var expectedTypes = configTypes[property];
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var value = config[property];
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var valueType = value && isElement(value) ? 'element' : toType(value);
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if (!new RegExp(expectedTypes).test(valueType)) {
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throw new Error(componentName.toUpperCase() + ": " + ("Option \"" + property + "\" provided type \"" + valueType + "\" ") + ("but expected type \"" + expectedTypes + "\"."));
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}
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});
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};
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var makeArray = function makeArray(nodeList) {
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if (!nodeList) {
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return [];
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}
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return [].slice.call(nodeList);
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};
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/**
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* ------------------------------------------------------------------------
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* Constants
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* ------------------------------------------------------------------------
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*/
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var NAME = 'scrollspy';
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var VERSION = '4.3.1';
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var DATA_KEY = 'bs.scrollspy';
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var EVENT_KEY = "." + DATA_KEY;
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var DATA_API_KEY = '.data-api';
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var Default = {
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offset: 10,
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method: 'auto',
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target: ''
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};
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var DefaultType = {
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offset: 'number',
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method: 'string',
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target: '(string|element)'
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};
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var Event = {
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ACTIVATE: "activate" + EVENT_KEY,
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SCROLL: "scroll" + EVENT_KEY,
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LOAD_DATA_API: "load" + EVENT_KEY + DATA_API_KEY
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};
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var ClassName = {
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DROPDOWN_ITEM: 'dropdown-item',
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ACTIVE: 'active'
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};
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var Selector = {
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DATA_SPY: '[data-spy="scroll"]',
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NAV_LIST_GROUP: '.nav, .list-group',
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NAV_LINKS: '.nav-link',
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NAV_ITEMS: '.nav-item',
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LIST_ITEMS: '.list-group-item',
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DROPDOWN: '.dropdown',
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DROPDOWN_TOGGLE: '.dropdown-toggle'
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};
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var OffsetMethod = {
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OFFSET: 'offset',
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POSITION: 'position'
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/**
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* ------------------------------------------------------------------------
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* Class Definition
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* ------------------------------------------------------------------------
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*/
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};
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var ScrollSpy =
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/*#__PURE__*/
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function () {
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function ScrollSpy(element, config) {
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var _this = this;
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this._element = element;
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this._scrollElement = element.tagName === 'BODY' ? window : element;
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this._config = this._getConfig(config);
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this._selector = this._config.target + " " + Selector.NAV_LINKS + "," + (this._config.target + " " + Selector.LIST_ITEMS + ",") + (this._config.target + " ." + ClassName.DROPDOWN_ITEM);
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this._offsets = [];
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this._targets = [];
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this._activeTarget = null;
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this._scrollHeight = 0;
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EventHandler.on(this._scrollElement, Event.SCROLL, function (event) {
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return _this._process(event);
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});
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this.refresh();
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this._process();
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Data.setData(element, DATA_KEY, this);
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} // Getters
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var _proto = ScrollSpy.prototype;
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// Public
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_proto.refresh = function refresh() {
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var _this2 = this;
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var autoMethod = this._scrollElement === this._scrollElement.window ? OffsetMethod.OFFSET : OffsetMethod.POSITION;
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var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
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var offsetBase = offsetMethod === OffsetMethod.POSITION ? this._getScrollTop() : 0;
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this._offsets = [];
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this._targets = [];
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this._scrollHeight = this._getScrollHeight();
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var targets = makeArray(SelectorEngine.find(this._selector));
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targets.map(function (element) {
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var target;
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var targetSelector = getSelectorFromElement(element);
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if (targetSelector) {
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target = SelectorEngine.findOne(targetSelector);
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}
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if (target) {
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var targetBCR = target.getBoundingClientRect();
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if (targetBCR.width || targetBCR.height) {
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return [Manipulator[offsetMethod](target).top + offsetBase, targetSelector];
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}
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}
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return null;
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}).filter(function (item) {
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return item;
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}).sort(function (a, b) {
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return a[0] - b[0];
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}).forEach(function (item) {
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_this2._offsets.push(item[0]);
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_this2._targets.push(item[1]);
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});
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};
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_proto.dispose = function dispose() {
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Data.removeData(this._element, DATA_KEY);
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EventHandler.off(this._scrollElement, EVENT_KEY);
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this._element = null;
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this._scrollElement = null;
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this._config = null;
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this._selector = null;
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this._offsets = null;
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this._targets = null;
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this._activeTarget = null;
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this._scrollHeight = null;
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} // Private
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;
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_proto._getConfig = function _getConfig(config) {
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config = _objectSpread({}, Default, typeof config === 'object' && config ? config : {});
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if (typeof config.target !== 'string') {
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var id = config.target.id;
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if (!id) {
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id = getUID(NAME);
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config.target.id = id;
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}
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config.target = "#" + id;
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}
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typeCheckConfig(NAME, config, DefaultType);
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return config;
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};
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_proto._getScrollTop = function _getScrollTop() {
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return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
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};
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_proto._getScrollHeight = function _getScrollHeight() {
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return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
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};
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_proto._getOffsetHeight = function _getOffsetHeight() {
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return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
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};
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_proto._process = function _process() {
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var scrollTop = this._getScrollTop() + this._config.offset;
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var scrollHeight = this._getScrollHeight();
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var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
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if (this._scrollHeight !== scrollHeight) {
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this.refresh();
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}
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if (scrollTop >= maxScroll) {
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var target = this._targets[this._targets.length - 1];
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if (this._activeTarget !== target) {
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this._activate(target);
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}
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return;
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}
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if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
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this._activeTarget = null;
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this._clear();
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return;
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}
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var offsetLength = this._offsets.length;
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for (var i = offsetLength; i--;) {
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var 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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if (isActiveTarget) {
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this._activate(this._targets[i]);
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}
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}
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};
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_proto._activate = function _activate(target) {
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this._activeTarget = target;
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this._clear();
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var queries = this._selector.split(',').map(function (selector) {
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return selector + "[data-target=\"" + target + "\"]," + selector + "[href=\"" + target + "\"]";
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});
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var link = SelectorEngine.findOne(queries.join(','));
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if (link.classList.contains(ClassName.DROPDOWN_ITEM)) {
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SelectorEngine.findOne(Selector.DROPDOWN_TOGGLE, SelectorEngine.closest(link, Selector.DROPDOWN)).classList.add(ClassName.ACTIVE);
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link.classList.add(ClassName.ACTIVE);
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} else {
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// Set triggered link as active
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link.classList.add(ClassName.ACTIVE);
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SelectorEngine.parents(link, Selector.NAV_LIST_GROUP).forEach(function (listGroup) {
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// Set triggered links parents as active
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// With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
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SelectorEngine.prev(listGroup, Selector.NAV_LINKS + ", " + Selector.LIST_ITEMS).forEach(function (item) {
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return item.classList.add(ClassName.ACTIVE);
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}); // Handle special case when .nav-link is inside .nav-item
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SelectorEngine.prev(listGroup, Selector.NAV_ITEMS).forEach(function (navItem) {
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SelectorEngine.children(navItem, Selector.NAV_LINKS).forEach(function (item) {
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return item.classList.add(ClassName.ACTIVE);
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});
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});
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});
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}
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EventHandler.trigger(this._scrollElement, Event.ACTIVATE, {
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relatedTarget: target
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});
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};
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_proto._clear = function _clear() {
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makeArray(SelectorEngine.find(this._selector)).filter(function (node) {
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return node.classList.contains(ClassName.ACTIVE);
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}).forEach(function (node) {
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return node.classList.remove(ClassName.ACTIVE);
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});
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} // Static
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;
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ScrollSpy._jQueryInterface = function _jQueryInterface(config) {
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return this.each(function () {
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var data = Data.getData(this, DATA_KEY);
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var _config = typeof config === 'object' && config;
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if (!data) {
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data = new ScrollSpy(this, _config);
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}
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if (typeof config === 'string') {
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if (typeof data[config] === 'undefined') {
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throw new TypeError("No method named \"" + config + "\"");
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}
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data[config]();
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}
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});
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};
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ScrollSpy._getInstance = function _getInstance(element) {
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return Data.getData(element, DATA_KEY);
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};
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_createClass(ScrollSpy, null, [{
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key: "VERSION",
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get: function get() {
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return VERSION;
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}
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}, {
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key: "Default",
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get: function get() {
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return Default;
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}
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}]);
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return ScrollSpy;
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}();
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/**
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* ------------------------------------------------------------------------
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* Data Api implementation
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* ------------------------------------------------------------------------
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*/
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EventHandler.on(window, Event.LOAD_DATA_API, function () {
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makeArray(SelectorEngine.find(Selector.DATA_SPY)).forEach(function (spy) {
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return new ScrollSpy(spy, Manipulator.getDataAttributes(spy));
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});
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});
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/**
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* ------------------------------------------------------------------------
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* jQuery
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* ------------------------------------------------------------------------
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*/
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if (typeof jQuery !== 'undefined') {
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var JQUERY_NO_CONFLICT = jQuery.fn[NAME];
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jQuery.fn[NAME] = ScrollSpy._jQueryInterface;
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jQuery.fn[NAME].Constructor = ScrollSpy;
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jQuery.fn[NAME].noConflict = function () {
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jQuery.fn[NAME] = JQUERY_NO_CONFLICT;
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return ScrollSpy._jQueryInterface;
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};
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}
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return ScrollSpy;
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}));
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//# sourceMappingURL=scrollspy.js.map
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