1 | function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }
|
2 |
|
3 | function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
|
4 |
|
5 | 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, descriptor.key, descriptor); } }
|
6 |
|
7 | function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
|
8 |
|
9 |
|
10 |
|
11 |
|
12 |
|
13 |
|
14 |
|
15 | var ScrollSpy = function ($) {
|
16 | |
17 |
|
18 |
|
19 |
|
20 |
|
21 | var NAME = 'scrollspy';
|
22 | var VERSION = '4.1.0';
|
23 | var DATA_KEY = 'bs.scrollspy';
|
24 | var EVENT_KEY = "." + DATA_KEY;
|
25 | var DATA_API_KEY = '.data-api';
|
26 | var JQUERY_NO_CONFLICT = $.fn[NAME];
|
27 | var Default = {
|
28 | offset: 10,
|
29 | method: 'auto',
|
30 | target: ''
|
31 | };
|
32 | var DefaultType = {
|
33 | offset: 'number',
|
34 | method: 'string',
|
35 | target: '(string|element)'
|
36 | };
|
37 | var Event = {
|
38 | ACTIVATE: "activate" + EVENT_KEY,
|
39 | SCROLL: "scroll" + EVENT_KEY,
|
40 | LOAD_DATA_API: "load" + EVENT_KEY + DATA_API_KEY
|
41 | };
|
42 | var ClassName = {
|
43 | DROPDOWN_ITEM: 'dropdown-item',
|
44 | DROPDOWN_MENU: 'dropdown-menu',
|
45 | ACTIVE: 'active'
|
46 | };
|
47 | var Selector = {
|
48 | DATA_SPY: '[data-spy="scroll"]',
|
49 | ACTIVE: '.active',
|
50 | NAV_LIST_GROUP: '.nav, .list-group',
|
51 | NAV_LINKS: '.nav-link',
|
52 | NAV_ITEMS: '.nav-item',
|
53 | LIST_ITEMS: '.list-group-item',
|
54 | DROPDOWN: '.dropdown',
|
55 | DROPDOWN_ITEMS: '.dropdown-item',
|
56 | DROPDOWN_TOGGLE: '.dropdown-toggle'
|
57 | };
|
58 | var OffsetMethod = {
|
59 | OFFSET: 'offset',
|
60 | POSITION: 'position'
|
61 | |
62 |
|
63 |
|
64 |
|
65 |
|
66 |
|
67 | };
|
68 |
|
69 | var ScrollSpy =
|
70 |
|
71 | function () {
|
72 | function ScrollSpy(element, config) {
|
73 | var _this = this;
|
74 |
|
75 | this._element = element;
|
76 | this._scrollElement = element.tagName === 'BODY' ? window : element;
|
77 | this._config = this._getConfig(config);
|
78 | this._selector = this._config.target + " " + Selector.NAV_LINKS + "," + (this._config.target + " " + Selector.LIST_ITEMS + ",") + (this._config.target + " " + Selector.DROPDOWN_ITEMS);
|
79 | this._offsets = [];
|
80 | this._targets = [];
|
81 | this._activeTarget = null;
|
82 | this._scrollHeight = 0;
|
83 | $(this._scrollElement).on(Event.SCROLL, function (event) {
|
84 | return _this._process(event);
|
85 | });
|
86 | this.refresh();
|
87 |
|
88 | this._process();
|
89 | }
|
90 |
|
91 |
|
92 | var _proto = ScrollSpy.prototype;
|
93 |
|
94 |
|
95 | _proto.refresh = function refresh() {
|
96 | var _this2 = this;
|
97 |
|
98 | var autoMethod = this._scrollElement === this._scrollElement.window ? OffsetMethod.OFFSET : OffsetMethod.POSITION;
|
99 | var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
|
100 | var offsetBase = offsetMethod === OffsetMethod.POSITION ? this._getScrollTop() : 0;
|
101 | this._offsets = [];
|
102 | this._targets = [];
|
103 | this._scrollHeight = this._getScrollHeight();
|
104 | var targets = $.makeArray($(this._selector));
|
105 | targets.map(function (element) {
|
106 | var target;
|
107 | var targetSelector = Util.getSelectorFromElement(element);
|
108 |
|
109 | if (targetSelector) {
|
110 | target = $(targetSelector)[0];
|
111 | }
|
112 |
|
113 | if (target) {
|
114 | var targetBCR = target.getBoundingClientRect();
|
115 |
|
116 | if (targetBCR.width || targetBCR.height) {
|
117 |
|
118 | return [$(target)[offsetMethod]().top + offsetBase, targetSelector];
|
119 | }
|
120 | }
|
121 |
|
122 | return null;
|
123 | }).filter(function (item) {
|
124 | return item;
|
125 | }).sort(function (a, b) {
|
126 | return a[0] - b[0];
|
127 | }).forEach(function (item) {
|
128 | _this2._offsets.push(item[0]);
|
129 |
|
130 | _this2._targets.push(item[1]);
|
131 | });
|
132 | };
|
133 |
|
134 | _proto.dispose = function dispose() {
|
135 | $.removeData(this._element, DATA_KEY);
|
136 | $(this._scrollElement).off(EVENT_KEY);
|
137 | this._element = null;
|
138 | this._scrollElement = null;
|
139 | this._config = null;
|
140 | this._selector = null;
|
141 | this._offsets = null;
|
142 | this._targets = null;
|
143 | this._activeTarget = null;
|
144 | this._scrollHeight = null;
|
145 | };
|
146 |
|
147 |
|
148 | _proto._getConfig = function _getConfig(config) {
|
149 | config = _objectSpread({}, Default, config);
|
150 |
|
151 | if (typeof config.target !== 'string') {
|
152 | var id = $(config.target).attr('id');
|
153 |
|
154 | if (!id) {
|
155 | id = Util.getUID(NAME);
|
156 | $(config.target).attr('id', id);
|
157 | }
|
158 |
|
159 | config.target = "#" + id;
|
160 | }
|
161 |
|
162 | Util.typeCheckConfig(NAME, config, DefaultType);
|
163 | return config;
|
164 | };
|
165 |
|
166 | _proto._getScrollTop = function _getScrollTop() {
|
167 | return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
|
168 | };
|
169 |
|
170 | _proto._getScrollHeight = function _getScrollHeight() {
|
171 | return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
|
172 | };
|
173 |
|
174 | _proto._getOffsetHeight = function _getOffsetHeight() {
|
175 | return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
|
176 | };
|
177 |
|
178 | _proto._process = function _process() {
|
179 | var scrollTop = this._getScrollTop() + this._config.offset;
|
180 |
|
181 | var scrollHeight = this._getScrollHeight();
|
182 |
|
183 | var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
|
184 |
|
185 | if (this._scrollHeight !== scrollHeight) {
|
186 | this.refresh();
|
187 | }
|
188 |
|
189 | if (scrollTop >= maxScroll) {
|
190 | var target = this._targets[this._targets.length - 1];
|
191 |
|
192 | if (this._activeTarget !== target) {
|
193 | this._activate(target);
|
194 | }
|
195 |
|
196 | return;
|
197 | }
|
198 |
|
199 | if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
|
200 | this._activeTarget = null;
|
201 |
|
202 | this._clear();
|
203 |
|
204 | return;
|
205 | }
|
206 |
|
207 | for (var i = this._offsets.length; i--;) {
|
208 | var isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);
|
209 |
|
210 | if (isActiveTarget) {
|
211 | this._activate(this._targets[i]);
|
212 | }
|
213 | }
|
214 | };
|
215 |
|
216 | _proto._activate = function _activate(target) {
|
217 | this._activeTarget = target;
|
218 |
|
219 | this._clear();
|
220 |
|
221 | var queries = this._selector.split(',');
|
222 |
|
223 |
|
224 | queries = queries.map(function (selector) {
|
225 | return selector + "[data-target=\"" + target + "\"]," + (selector + "[href=\"" + target + "\"]");
|
226 | });
|
227 | var $link = $(queries.join(','));
|
228 |
|
229 | if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {
|
230 | $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE);
|
231 | $link.addClass(ClassName.ACTIVE);
|
232 | } else {
|
233 |
|
234 | $link.addClass(ClassName.ACTIVE);
|
235 |
|
236 |
|
237 | $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_LINKS + ", " + Selector.LIST_ITEMS).addClass(ClassName.ACTIVE);
|
238 |
|
239 | $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_ITEMS).children(Selector.NAV_LINKS).addClass(ClassName.ACTIVE);
|
240 | }
|
241 |
|
242 | $(this._scrollElement).trigger(Event.ACTIVATE, {
|
243 | relatedTarget: target
|
244 | });
|
245 | };
|
246 |
|
247 | _proto._clear = function _clear() {
|
248 | $(this._selector).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE);
|
249 | };
|
250 |
|
251 |
|
252 | ScrollSpy._jQueryInterface = function _jQueryInterface(config) {
|
253 | return this.each(function () {
|
254 | var data = $(this).data(DATA_KEY);
|
255 |
|
256 | var _config = typeof config === 'object' && config;
|
257 |
|
258 | if (!data) {
|
259 | data = new ScrollSpy(this, _config);
|
260 | $(this).data(DATA_KEY, data);
|
261 | }
|
262 |
|
263 | if (typeof config === 'string') {
|
264 | if (typeof data[config] === 'undefined') {
|
265 | throw new TypeError("No method named \"" + config + "\"");
|
266 | }
|
267 |
|
268 | data[config]();
|
269 | }
|
270 | });
|
271 | };
|
272 |
|
273 | _createClass(ScrollSpy, null, [{
|
274 | key: "VERSION",
|
275 | get: function get() {
|
276 | return VERSION;
|
277 | }
|
278 | }, {
|
279 | key: "Default",
|
280 | get: function get() {
|
281 | return Default;
|
282 | }
|
283 | }]);
|
284 |
|
285 | return ScrollSpy;
|
286 | }();
|
287 | |
288 |
|
289 |
|
290 |
|
291 |
|
292 |
|
293 |
|
294 | $(window).on(Event.LOAD_DATA_API, function () {
|
295 | var scrollSpys = $.makeArray($(Selector.DATA_SPY));
|
296 |
|
297 | for (var i = scrollSpys.length; i--;) {
|
298 | var $spy = $(scrollSpys[i]);
|
299 |
|
300 | ScrollSpy._jQueryInterface.call($spy, $spy.data());
|
301 | }
|
302 | });
|
303 | |
304 |
|
305 |
|
306 |
|
307 |
|
308 |
|
309 | $.fn[NAME] = ScrollSpy._jQueryInterface;
|
310 | $.fn[NAME].Constructor = ScrollSpy;
|
311 |
|
312 | $.fn[NAME].noConflict = function () {
|
313 | $.fn[NAME] = JQUERY_NO_CONFLICT;
|
314 | return ScrollSpy._jQueryInterface;
|
315 | };
|
316 |
|
317 | return ScrollSpy;
|
318 | }($);
|
319 |
|
\ | No newline at end of file |