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Línea 1... Línea 1...
1 
/**
 1 
/**
2 
 * --------------------------------------------------------------------------
 2 
 * --------------------------------------------------------------------------
3 
 * Bootstrap (v4.6.2): scrollspy.js
 3 
 * Bootstrap scrollspy.js
4 
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
 4 
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
5 
 * --------------------------------------------------------------------------
 5 
 * --------------------------------------------------------------------------
6 
 */
 6 
 */
Línea 7... Línea 7...
7 
 
 7 
 
8 
import $ from 'jquery'
 8 
import BaseComponent from './base-component'
- 
 
 9 
import EventHandler from './dom/event-handler'
- 
 
 10 
import SelectorEngine from './dom/selector-engine'
- 
 
 11 
import {
- 
 
 12 
  defineJQueryPlugin, getElement, isDisabled, isVisible
Línea 9... Línea 13...
9 
import Util from './util'
 13 
} from './util/index'
10 
 
 14 
 
11 
/**
 15 
/**
Línea 12... Línea 16...
12 
 * Constants
 16 
 * Constants
13 
 */
 - 
 
14 
 
 17 
 */
15 
const NAME = 'scrollspy'
 18 
 
16 
const VERSION = '4.6.2'
 19 
const NAME = 'scrollspy'
17 
const DATA_KEY = 'bs.scrollspy'
 - 
 
18 
const EVENT_KEY = `.${DATA_KEY}`
 - 
 
19 
const DATA_API_KEY = '.data-api'
 - 
 
20 
const JQUERY_NO_CONFLICT = $.fn[NAME]
 - 
 
Línea 21... Línea 20...
21 
 
 20 
const DATA_KEY = 'bs.scrollspy'
22 
const CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item'
 21 
const EVENT_KEY = `.${DATA_KEY}`
23 
const CLASS_NAME_ACTIVE = 'active'
 22 
const DATA_API_KEY = '.data-api'
Línea 24... Línea 23...
24 
 
 23 
 
25 
const EVENT_ACTIVATE = `activate${EVENT_KEY}`
 24 
const EVENT_ACTIVATE = `activate${EVENT_KEY}`
Línea 26... Línea 25...
26 
const EVENT_SCROLL = `scroll${EVENT_KEY}`
 25 
const EVENT_CLICK = `click${EVENT_KEY}`
- 
 
 26 
const EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`
27 
const EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`
 27 
 
28 
 
 28 
const CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item'
29 
const METHOD_OFFSET = 'offset'
 29 
const CLASS_NAME_ACTIVE = 'active'
30 
const METHOD_POSITION = 'position'
 30 
 
- 
 
 31 
const SELECTOR_DATA_SPY = '[data-bs-spy="scroll"]'
31 
 
 32 
const SELECTOR_TARGET_LINKS = '[href]'
32 
const SELECTOR_DATA_SPY = '[data-spy="scroll"]'
 - 
 
33 
const SELECTOR_NAV_LIST_GROUP = '.nav, .list-group'
 33 
const SELECTOR_NAV_LIST_GROUP = '.nav, .list-group'
Línea 34... Línea 34...
34 
const SELECTOR_NAV_LINKS = '.nav-link'
 34 
const SELECTOR_NAV_LINKS = '.nav-link'
- 
 
 35 
const SELECTOR_NAV_ITEMS = '.nav-item'
35 
const SELECTOR_NAV_ITEMS = '.nav-item'
 36 
const SELECTOR_LIST_ITEMS = '.list-group-item'
36 
const SELECTOR_LIST_ITEMS = '.list-group-item'
 37 
const SELECTOR_LINK_ITEMS = `${SELECTOR_NAV_LINKS}, ${SELECTOR_NAV_ITEMS} > ${SELECTOR_NAV_LINKS}, ${SELECTOR_LIST_ITEMS}`
37 
const SELECTOR_DROPDOWN = '.dropdown'
 38 
const SELECTOR_DROPDOWN = '.dropdown'
- 
 
 39 
const SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle'
38 
const SELECTOR_DROPDOWN_ITEMS = '.dropdown-item'
 40 
 
Línea 39... Línea 41...
39 
const SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle'
 41 
const Default = {
- 
 
 42 
  offset: null, // TODO: v6 @deprecated, keep it for backwards compatibility reasons
40 
 
 43 
  rootMargin: '0px 0px -25%',
41 
const Default = {
 44 
  smoothScroll: false,
42 
  offset: 10,
 45 
  target: null,
- 
 
 46 
  threshold: [0.1, 0.5, 1]
43 
  method: 'auto',
 47 
}
Línea 44... Línea 48...
44 
  target: ''
 48 
 
45 
}
 49 
const DefaultType = {
46 
 
 50 
  offset: '(number|null)', // TODO v6 @deprecated, keep it for backwards compatibility reasons
Línea 47... Línea 51...
47 
const DefaultType = {
 51 
  rootMargin: 'string',
48 
  offset: 'number',
 52 
  smoothScroll: 'boolean',
49 
  method: 'string',
 53 
  target: 'element',
50 
  target: '(string|element)'
 - 
 
51 
}
 - 
 
52 
 
 - 
 
53 
/**
 - 
 
54 
 * Class definition
 - 
 
55 
 */
 - 
 
56 
 
 - 
 
57 
class ScrollSpy {
 - 
 
58 
  constructor(element, config) {
 - 
 
59 
    this._element = element
 - 
 
60 
    this._scrollElement = element.tagName === 'BODY' ? window : element
 - 
 
Línea -... Línea 54...
- 
 
 54 
  threshold: 'array'
- 
 
 55 
}
- 
 
 56 
 
- 
 
 57 
/**
61 
    this._config = this._getConfig(config)
 58 
 * Class definition
62 
    this._selector = `${this._config.target} ${SELECTOR_NAV_LINKS},` +
 59 
 */
- 
 
 60 
 
- 
 
 61 
class ScrollSpy extends BaseComponent {
- 
 
 62 
  constructor(element, config) {
- 
 
 63 
    super(element, config)
- 
 
 64 
 
63 
                          `${this._config.target} ${SELECTOR_LIST_ITEMS},` +
 65 
    // this._element is the observablesContainer and config.target the menu links wrapper
Línea 64... Línea 66...
64 
                          `${this._config.target} ${SELECTOR_DROPDOWN_ITEMS}`
 66 
    this._targetLinks = new Map()
65 
    this._offsets = []
 - 
 
66 
    this._targets = []
 - 
 
67 
    this._activeTarget = null
 - 
 
68 
    this._scrollHeight = 0
 - 
 
69 
 
 67 
    this._observableSections = new Map()
70 
    $(this._scrollElement).on(EVENT_SCROLL, event => this._process(event))
 68 
    this._rootElement = getComputedStyle(this._element).overflowY === 'visible' ? null : this._element
71 
 
 69 
    this._activeTarget = null
Línea 72... Línea -...
72 
    this.refresh()
 - 
 
73 
    this._process()
 - 
 
74 
  }
 - 
 
75 
 
 - 
 
76 
  // Getters
 - 
 
77 
  static get VERSION() {
 - 
 
78 
    return VERSION
 - 
 
79 
  }
 - 
 
80 
 
 - 
 
81 
  static get Default() {
 70 
    this._observer = null
82 
    return Default
 - 
 
83 
  }
 71 
    this._previousScrollData = {
84 
 
 - 
 
85 
  // Public
 - 
 
86 
  refresh() {
 - 
 
87 
    const autoMethod = this._scrollElement === this._scrollElement.window ?
 72 
      visibleEntryTop: 0,
88 
      METHOD_OFFSET : METHOD_POSITION
 - 
 
Línea 89... Línea 73...
89 
 
 73 
      parentScrollTop: 0
90 
    const offsetMethod = this._config.method === 'auto' ?
 74 
    }
91 
      autoMethod : this._config.method
 75 
    this.refresh() // initialize
92 
 
 - 
 
Línea -... Línea 76...
- 
 
 76 
  }
93 
    const offsetBase = offsetMethod === METHOD_POSITION ?
 77 
 
94 
      this._getScrollTop() : 0
 78 
  // Getters
95 
 
 79 
  static get Default() {
Línea 96... Línea 80...
96 
    this._offsets = []
 80 
    return Default
97 
    this._targets = []
 81 
  }
98 
 
 - 
 
99 
    this._scrollHeight = this._getScrollHeight()
 - 
 
100 
 
 82 
 
101 
    const targets = [].slice.call(document.querySelectorAll(this._selector))
 - 
 
102 
 
 83 
  static get DefaultType() {
103 
    targets
 - 
 
104 
      .map(element => {
 - 
 
105 
        let target
 84 
    return DefaultType
Línea 106... Línea -...
106 
        const targetSelector = Util.getSelectorFromElement(element)
 - 
 
107 
 
 - 
 
108 
        if (targetSelector) {
 - 
 
109 
          target = document.querySelector(targetSelector)
 - 
 
110 
        }
 - 
 
111 
 
 85 
  }
112 
        if (target) {
 86 
 
113 
          const targetBCR = target.getBoundingClientRect()
 87 
  static get NAME() {
114 
          if (targetBCR.width || targetBCR.height) {
 88 
    return NAME
Línea 115... Línea 89...
115 
            // TODO (fat): remove sketch reliance on jQuery position/offset
 89 
  }
116 
            return [
 - 
 
117 
              $(target)[offsetMethod]().top + offsetBase,
 - 
 
118 
              targetSelector
 - 
 
119 
            ]
 - 
 
120 
          }
 - 
 
121 
        }
 - 
 
122 
 
 90 
 
123 
        return null
 - 
 
124 
      })
 91 
  // Public
125 
      .filter(Boolean)
 - 
 
126 
      .sort((a, b) => a[0] - b[0])
 - 
 
127 
      .forEach(item => {
 92 
  refresh() {
Línea 128... Línea 93...
128 
        this._offsets.push(item[0])
 93 
    this._initializeTargetsAndObservables()
129 
        this._targets.push(item[1])
 94 
    this._maybeEnableSmoothScroll()
130 
      })
 - 
 
131 
  }
 95 
 
132 
 
 96 
    if (this._observer) {
133 
  dispose() {
 - 
 
Línea 134... Línea 97...
134 
    $.removeData(this._element, DATA_KEY)
 97 
      this._observer.disconnect()
135 
    $(this._scrollElement).off(EVENT_KEY)
 98 
    } else {
136 
 
 - 
 
137 
    this._element = null
 - 
 
138 
    this._scrollElement = null
 - 
 
139 
    this._config = null
 - 
 
Línea 140... Línea 99...
140 
    this._selector = null
 99 
      this._observer = this._getNewObserver()
- 
 
 100 
    }
141 
    this._offsets = null
 101 
 
Línea 142... Línea -...
142 
    this._targets = null
 - 
 
143 
    this._activeTarget = null
 - 
 
144 
    this._scrollHeight = null
 102 
    for (const section of this._observableSections.values()) {
145 
  }
 103 
      this._observer.observe(section)
Línea 146... Línea 104...
146 
 
 104 
    }
147 
  // Private
 105 
  }
148 
  _getConfig(config) {
 106 
 
149 
    config = {
 107 
  dispose() {
Línea -... Línea 108...
- 
 
 108 
    this._observer.disconnect()
- 
 
 109 
    super.dispose()
- 
 
 110 
  }
- 
 
 111 
 
- 
 
 112 
  // Private
150 
      ...Default,
 113 
  _configAfterMerge(config) {
- 
 
 114 
    // TODO: on v6 target should be given explicitly & remove the {target: 'ss-target'} case
151 
      ...(typeof config === 'object' && config ? config : {})
 115 
    config.target = getElement(config.target) || document.body
- 
 
 116 
 
152 
    }
 117 
    // TODO: v6 Only for backwards compatibility reasons. Use rootMargin only
153 
 
 118 
    config.rootMargin = config.offset ? `${config.offset}px 0px -30%` : config.rootMargin
154 
    if (typeof config.target !== 'string' && Util.isElement(config.target)) {
 119 
 
155 
      let id = $(config.target).attr('id')
 120 
    if (typeof config.threshold === 'string') {
Línea 156... Línea -...
156 
      if (!id) {
 - 
 
157 
        id = Util.getUID(NAME)
 121 
      config.threshold = config.threshold.split(',').map(value => Number.parseFloat(value))
158 
        $(config.target).attr('id', id)
 122 
    }
- 
 
 123 
 
- 
 
 124 
    return config
159 
      }
 125 
  }
Línea 160... Línea 126...
160 
 
 126 
 
- 
 
 127 
  _maybeEnableSmoothScroll() {
- 
 
 128 
    if (!this._config.smoothScroll) {
161 
      config.target = `#${id}`
 129 
      return
162 
    }
 130 
    }
- 
 
 131 
 
- 
 
 132 
    // unregister any previous listeners
163 
 
 133 
    EventHandler.off(this._config.target, EVENT_CLICK)
- 
 
 134 
 
Línea -... Línea 135...
- 
 
 135 
    EventHandler.on(this._config.target, EVENT_CLICK, SELECTOR_TARGET_LINKS, event => {
- 
 
 136 
      const observableSection = this._observableSections.get(event.target.hash)
- 
 
 137 
      if (observableSection) {
- 
 
 138 
        event.preventDefault()
164 
    Util.typeCheckConfig(NAME, config, DefaultType)
 139 
        const root = this._rootElement || window
165 
 
 140 
        const height = observableSection.offsetTop - this._element.offsetTop
166 
    return config
 141 
        if (root.scrollTo) {
Línea -... Línea 142...
- 
 
 142 
          root.scrollTo({ top: height, behavior: 'smooth' })
- 
 
 143 
          return
- 
 
 144 
        }
- 
 
 145 
 
- 
 
 146 
        // Chrome 60 doesn't support `scrollTo`
167 
  }
 147 
        root.scrollTop = height
- 
 
 148 
      }
168 
 
 149 
    })
Línea 169... Línea -...
169 
  _getScrollTop() {
 - 
 
170 
    return this._scrollElement === window ?
 150 
  }
171 
      this._scrollElement.pageYOffset : this._scrollElement.scrollTop
 151 
 
Línea -... Línea 152...
- 
 
 152 
  _getNewObserver() {
- 
 
 153 
    const options = {
- 
 
 154 
      root: this._rootElement,
- 
 
 155 
      threshold: this._config.threshold,
- 
 
 156 
      rootMargin: this._config.rootMargin
- 
 
 157 
    }
172 
  }
 158 
 
173 
 
 159 
    return new IntersectionObserver(entries => this._observerCallback(entries), options)
Línea -... Línea 160...
- 
 
 160 
  }
- 
 
 161 
 
- 
 
 162 
  // The logic of selection
174 
  _getScrollHeight() {
 163 
  _observerCallback(entries) {
175 
    return this._scrollElement.scrollHeight || Math.max(
 164 
    const targetElement = entry => this._targetLinks.get(`#${entry.target.id}`)
176 
      document.body.scrollHeight,
 165 
    const activate = entry => {
177 
      document.documentElement.scrollHeight
 166 
      this._previousScrollData.visibleEntryTop = entry.target.offsetTop
178 
    )
 167 
      this._process(targetElement(entry))
- 
 
 168 
    }
- 
 
 169 
 
- 
 
 170 
    const parentScrollTop = (this._rootElement || document.documentElement).scrollTop
- 
 
 171 
    const userScrollsDown = parentScrollTop >= this._previousScrollData.parentScrollTop
- 
 
 172 
    this._previousScrollData.parentScrollTop = parentScrollTop
- 
 
 173 
 
- 
 
 174 
    for (const entry of entries) {
- 
 
 175 
      if (!entry.isIntersecting) {
- 
 
 176 
        this._activeTarget = null
- 
 
 177 
        this._clearActiveClass(targetElement(entry))
- 
 
 178 
 
- 
 
 179 
        continue
- 
 
 180 
      }
Línea 179... Línea -...
179 
  }
 - 
 
180 
 
 181 
 
181 
  _getOffsetHeight() {
 - 
 
182 
    return this._scrollElement === window ?
 - 
 
183 
      window.innerHeight : this._scrollElement.getBoundingClientRect().height
 - 
 
Línea -... Línea 182...
- 
 
 182 
      const entryIsLowerThanPrevious = entry.target.offsetTop >= this._previousScrollData.visibleEntryTop
184 
  }
 183 
      // if we are scrolling down, pick the bigger offsetTop
185 
 
 184 
      if (userScrollsDown && entryIsLowerThanPrevious) {
- 
 
 185 
        activate(entry)
186 
  _process() {
 186 
        // if parent isn't scrolled, let's keep the first visible item, breaking the iteration
187 
    const scrollTop = this._getScrollTop() + this._config.offset
 187 
        if (!parentScrollTop) {
188 
    const scrollHeight = this._getScrollHeight()
 188 
          return
Línea 189... Línea 189...
189 
    const maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight()
 189 
        }
- 
 
 190 
 
- 
 
 191 
        continue
- 
 
 192 
      }
- 
 
 193 
 
- 
 
 194 
      // if we are scrolling up, pick the smallest offsetTop
190 
 
 195 
      if (!userScrollsDown && !entryIsLowerThanPrevious) {
- 
 
 196 
        activate(entry)
- 
 
 197 
      }
Línea -... Línea 198...
- 
 
 198 
    }
191 
    if (this._scrollHeight !== scrollHeight) {
 199 
  }
Línea 192... Línea 200...
192 
      this.refresh()
 200 
 
193 
    }
 201 
  _initializeTargetsAndObservables() {
194 
 
 - 
 
195 
    if (scrollTop >= maxScroll) {
 - 
 
196 
      const target = this._targets[this._targets.length - 1]
 - 
 
197 
 
 - 
 
198 
      if (this._activeTarget !== target) {
 202 
    this._targetLinks = new Map()
199 
        this._activate(target)
 - 
 
200 
      }
 203 
    this._observableSections = new Map()
201 
 
 204 
 
202 
      return
 205 
    const targetLinks = SelectorEngine.find(SELECTOR_TARGET_LINKS, this._config.target)
203 
    }
 206 
 
204 
 
 - 
 
- 
 
 207 
    for (const anchor of targetLinks) {
205 
    if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
 208 
      // ensure that the anchor has an id and is not disabled
206 
      this._activeTarget = null
 209 
      if (!anchor.hash || isDisabled(anchor)) {
207 
      this._clear()
 210 
        continue
208 
      return
 - 
 
209 
    }
 211 
      }
210 
 
 212 
 
211 
    for (let i = this._offsets.length; i--;) {
 - 
 
212 
      const isActiveTarget = this._activeTarget !== this._targets[i] &&
 - 
 
213 
          scrollTop >= this._offsets[i] &&
 213 
      const observableSection = SelectorEngine.findOne(decodeURI(anchor.hash), this._element)
214 
          (typeof this._offsets[i + 1] === 'undefined' ||
 - 
 
215 
              scrollTop < this._offsets[i + 1])
 - 
 
216 
 
 214 
 
217 
      if (isActiveTarget) {
 - 
 
218 
        this._activate(this._targets[i])
 - 
 
219 
      }
 - 
 
220 
    }
 - 
 
221 
  }
 215 
      // ensure that the observableSection exists & is visible
Línea 222... Línea 216...
222 
 
 216 
      if (isVisible(observableSection)) {
223 
  _activate(target) {
 217 
        this._targetLinks.set(decodeURI(anchor.hash), anchor)
- 
 
 218 
        this._observableSections.set(anchor.hash, observableSection)
224 
    this._activeTarget = target
 219 
      }
- 
 
 220 
    }
225 
 
 221 
  }
- 
 
 222 
 
226 
    this._clear()
 223 
  _process(target) {
Línea 227... Línea 224...
227 
 
 224 
    if (this._activeTarget === target) {
228 
    const queries = this._selector
 225 
      return
229 
      .split(',')
 226 
    }
230 
      .map(selector => `${selector}[data-target="${target}"],${selector}[href="${target}"]`)
 - 
 
231 
 
 227 
 
Línea 232... Línea -...
232 
    const $link = $([].slice.call(document.querySelectorAll(queries.join(','))))
 - 
 
233 
 
 228 
    this._clearActiveClass(this._config.target)
234 
    if ($link.hasClass(CLASS_NAME_DROPDOWN_ITEM)) {
 229 
    this._activeTarget = target
235 
      $link.closest(SELECTOR_DROPDOWN)
 230 
    target.classList.add(CLASS_NAME_ACTIVE)
Línea 236... Línea -...
236 
        .find(SELECTOR_DROPDOWN_TOGGLE)
 - 
 
237 
        .addClass(CLASS_NAME_ACTIVE)
 231 
    this._activateParents(target)
238 
      $link.addClass(CLASS_NAME_ACTIVE)
 232 
 
239 
    } else {
 - 
 
240 
      // Set triggered link as active
 - 
 
241 
      $link.addClass(CLASS_NAME_ACTIVE)
 - 
 
242 
      // Set triggered links parents as active
 233 
    EventHandler.trigger(this._element, EVENT_ACTIVATE, { relatedTarget: target })
- 
 
 234 
  }
- 
 
 235 
 
243 
      // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
 236 
  _activateParents(target) {
244 
      $link.parents(SELECTOR_NAV_LIST_GROUP)
 237 
    // Activate dropdown parents
245 
        .prev(`${SELECTOR_NAV_LINKS}, ${SELECTOR_LIST_ITEMS}`)
 238 
    if (target.classList.contains(CLASS_NAME_DROPDOWN_ITEM)) {
Línea 246... Línea 239...
246 
        .addClass(CLASS_NAME_ACTIVE)
 239 
      SelectorEngine.findOne(SELECTOR_DROPDOWN_TOGGLE, target.closest(SELECTOR_DROPDOWN))
247 
      // Handle special case when .nav-link is inside .nav-item
 240 
        .classList.add(CLASS_NAME_ACTIVE)
248 
      $link.parents(SELECTOR_NAV_LIST_GROUP)
 241 
      return
Línea 249... Línea 242...
249 
        .prev(SELECTOR_NAV_ITEMS)
 242 
    }
250 
        .children(SELECTOR_NAV_LINKS)
 243 
 
251 
        .addClass(CLASS_NAME_ACTIVE)
 - 
 
252 
    }
 - 
 
253 
 
 - 
 
254 
    $(this._scrollElement).trigger(EVENT_ACTIVATE, {
 - 
 
255 
      relatedTarget: target
 244 
    for (const listGroup of SelectorEngine.parents(target, SELECTOR_NAV_LIST_GROUP)) {
256 
    })
 245 
      // Set triggered links parents as active
257 
  }
 246 
      // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
Línea 258... Línea 247...
258 
 
 247 
      for (const item of SelectorEngine.prev(listGroup, SELECTOR_LINK_ITEMS)) {
259 
  _clear() {
 248 
        item.classList.add(CLASS_NAME_ACTIVE)
260 
    [].slice.call(document.querySelectorAll(this._selector))
 249 
      }
Línea 261... Línea -...
261 
      .filter(node => node.classList.contains(CLASS_NAME_ACTIVE))
 - 
 
262 
      .forEach(node => node.classList.remove(CLASS_NAME_ACTIVE))
 250 
    }
263 
  }
 - 
 
264 
 
 - 
 
265 
  // Static
 - 
 
266 
  static _jQueryInterface(config) {
 - 
 
Línea 267... Línea 251...
267 
    return this.each(function () {
 251 
  }