2020-10-13 17:38:30 +02:00
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{"version":3,"file":"scrollspy.js","sources":["../src/scrollspy.js"],"sourcesContent":["/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.5.3): scrollspy.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport $ from 'jquery'\nimport Util from './util'\n\n/**\n * ------------------------------------------------------------------------\n * Constants\n * ------------------------------------------------------------------------\n */\n\nconst NAME = 'scrollspy'\nconst VERSION = '4.5.3'\nconst DATA_KEY = 'bs.scrollspy'\nconst EVENT_KEY = `.${DATA_KEY}`\nconst DATA_API_KEY = '.data-api'\nconst JQUERY_NO_CONFLICT = $.fn[NAME]\n\nconst Default = {\n offset: 10,\n method: 'auto',\n target: ''\n}\n\nconst DefaultType = {\n offset: 'number',\n method: 'string',\n target: '(string|element)'\n}\n\nconst EVENT_ACTIVATE = `activate${EVENT_KEY}`\nconst EVENT_SCROLL = `scroll${EVENT_KEY}`\nconst EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`\n\nconst CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item'\nconst CLASS_NAME_ACTIVE = 'active'\n\nconst SELECTOR_DATA_SPY = '[data-spy=\"scroll\"]'\nconst SELECTOR_NAV_LIST_GROUP = '.nav, .list-group'\nconst SELECTOR_NAV_LINKS = '.nav-link'\nconst SELECTOR_NAV_ITEMS = '.nav-item'\nconst SELECTOR_LIST_ITEMS = '.list-group-item'\nconst SELECTOR_DROPDOWN = '.dropdown'\nconst SELECTOR_DROPDOWN_ITEMS = '.dropdown-item'\nconst SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle'\n\nconst METHOD_OFFSET = 'offset'\nconst METHOD_POSITION = 'position'\n\n/**\n * ------------------------------------------------------------------------\n * Class Definition\n * ------------------------------------------------------------------------\n */\n\nclass ScrollSpy {\n constructor(element, config) {\n this._element = element\n this._scrollElement = element.tagName === 'BODY' ? window : element\n this._config = this._getConfig(config)\n this._selector = `${this._config.target} ${SELECTOR_NAV_LINKS},` +\n `${this._config.target} ${SELECTOR_LIST_ITEMS},` +\n `${this._config.target} ${SELECTOR_DROPDOWN_ITEMS}`\n this._offsets = []\n this._targets = []\n this._activeTarget = null\n this._scrollHeight = 0\n\n $(this._scrollElement).on(EVENT_SCROLL, event => this._process(event))\n\n this.refresh()\n this._process()\n }\n\n // Getters\n\n static get VERSION() {\n return VERSION\n }\n\n static get Default() {\n return Default\n }\n\n // Public\n\n refresh() {\n const autoMethod = this._scrollElement === this._scrollElement.window ?\n METHOD_OFFSET : METHOD_POSITION\n\n const offsetMethod = this._config.method === 'auto' ?\n autoMethod : this._config.method\n\n const offsetBase = offsetMethod === METHOD_POSITION ?\n this._getScrollTop() : 0\n\n this._offsets = []\n this._targets = []\n\n this._scrollHeight = this._getScrollHeight()\n\n const targets = [].slice.call(document.querySelectorAll(this._selector))\n\n targets\n .map(element => {\n let target\n const targetSelector = Util.getSelectorFromElement(element)\n\n if (targetSelector) {\n target = document.querySelector(targetSelector)\n }\n\n if (target) {\n const targetBCR = target.getBoundingClientRect()\n if (targetBCR.width || targetBCR.height) {\n // TODO (fat): remove sketch reliance on jQuery position/offset\n return [\n $(target)[offsetMethod]().top + offsetBase,\n targetSelector\n ]\n }\n }\n\n return null\n })\n .filter(item => item)\n .sort((a, b) => a[0] - b[0])\n .forEach(item => {\n this._offsets.push(item[0])\n this._targets.push(item[1])\n })\n }\n\n dispose() {\n $.removeData(this._element, DATA_KEY)\n $(this._scrollElement).off(EVENT_KEY)\n\n this._element = null\n
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