R E D

NAME	SIZE	PERMISSION
dom	[ DIR ]	drwxr-xr-x
util	[ DIR ]	drwxr-xr-x
alert.js	2.53 KB	-rwxr-xr-x
base-component.js	1.79 KB	-rwxr-xr-x
button.js	2.26 KB	-rwxr-xr-x
carousel.js	16.31 KB	-rwxr-xr-x
collapse.js	9.05 KB	-rwxr-xr-x
dropdown.js	14.37 KB	-rwxr-xr-x
modal.js	11.52 KB	-rwxr-xr-x
offcanvas.js	6.72 KB	-rwxr-xr-x
popover.js	2.91 KB	-rwxr-xr-x
scrollspy.js	8.01 KB	-rwxr-xr-x
tab.js	6.24 KB	-rwxr-xr-x
toast.js	5.86 KB	-rwxr-xr-x
tooltip.js	19.49 KB	-rwxr-xr-x

Code Editor : scrollspy.js

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v5.1.3): scrollspy.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
 * --------------------------------------------------------------------------
 */

import {
  defineJQueryPlugin,
  getElement,
  getSelectorFromElement,
  typeCheckConfig,
} from './util/index';
import EventHandler from './dom/event-handler';
import Manipulator from './dom/manipulator';
import SelectorEngine from './dom/selector-engine';
import BaseComponent from './base-component';

/**
 * ------------------------------------------------------------------------
 * Constants
 * ------------------------------------------------------------------------
 */

const NAME = 'scrollspy';
const DATA_KEY = 'bs.scrollspy';
const EVENT_KEY = `.${DATA_KEY}`;
const DATA_API_KEY = '.data-api';

const Default = {
  offset: 10,
  method: 'auto',
  target: '',
};

const DefaultType = {
  offset: 'number',
  method: 'string',
  target: '(string|element)',
};

const EVENT_ACTIVATE = `activate${EVENT_KEY}`;
const EVENT_SCROLL = `scroll${EVENT_KEY}`;
const EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`;

const CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item';
const CLASS_NAME_ACTIVE = 'active';

const METHOD_OFFSET = 'offset';
const METHOD_POSITION = 'position';

/**
 * ------------------------------------------------------------------------
 * Class Definition
 * ------------------------------------------------------------------------
 */

class ScrollSpy extends BaseComponent {
  constructor(element, config) {
    super(element);
    this._scrollElement = this._element.tagName === 'BODY' ? window : this._element;
    this._config = this._getConfig(config);
    this._offsets = [];
    this._targets = [];
    this._activeTarget = null;
    this._scrollHeight = 0;

EventHandler.on(this._scrollElement, EVENT_SCROLL, () => this._process());

this.refresh();
    this._process();
  }

// Getters

static get Default() {
    return Default;
  }

static get NAME() {
    return NAME;
  }

// Public

refresh() {
    const autoMethod =
      this._scrollElement === this._scrollElement.window ? METHOD_OFFSET : METHOD_POSITION;

const offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;

const offsetBase = offsetMethod === METHOD_POSITION ? this._getScrollTop() : 0;

this._offsets = [];
    this._targets = [];
    this._scrollHeight = this._getScrollHeight();

const targets = SelectorEngine.find(SELECTOR_LINK_ITEMS, this._config.target);

targets
      .map((element) => {
        const targetSelector = getSelectorFromElement(element);
        const target = targetSelector ? SelectorEngine.findOne(targetSelector) : null;

if (target) {
          const targetBCR = target.getBoundingClientRect();
          if (targetBCR.width || targetBCR.height) {
            return [Manipulator[offsetMethod](target).top + offsetBase, targetSelector];
          }
        }

return null;
      })
      .filter((item) => item)
      .sort((a, b) => a[0] - b[0])
      .forEach((item) => {
        this._offsets.push(item[0]);
        this._targets.push(item[1]);
      });
  }

dispose() {
    EventHandler.off(this._scrollElement, EVENT_KEY);
    super.dispose();
  }

// Private

_getConfig(config) {
    config = {
      ...Default,
      ...Manipulator.getDataAttributes(this._element),
      ...(typeof config === 'object' && config ? config : {}),
    };

config.target = getElement(config.target) || document.documentElement;

typeCheckConfig(NAME, config, DefaultType);

return config;
  }

_getScrollTop() {
    return this._scrollElement === window
      ? this._scrollElement.pageYOffset
      : this._scrollElement.scrollTop;
  }

_getScrollHeight() {
    return (
      this._scrollElement.scrollHeight ||
      Math.max(document.body.scrollHeight, document.documentElement.scrollHeight)
    );
  }

_getOffsetHeight() {
    return this._scrollElement === window
      ? window.innerHeight
      : this._scrollElement.getBoundingClientRect().height;
  }

_process() {
    const scrollTop = this._getScrollTop() + this._config.offset;
    const scrollHeight = this._getScrollHeight();
    const maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();

if (this._scrollHeight !== scrollHeight) {
      this.refresh();
    }

if (scrollTop >= maxScroll) {
      const target = this._targets[this._targets.length - 1];

if (this._activeTarget !== target) {
        this._activate(target);
      }

return;
    }

if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
      this._activeTarget = null;
      this._clear();
      return;
    }

for (let i = this._offsets.length; i--; ) {
      const isActiveTarget =
        this._activeTarget !== this._targets[i] &&
        scrollTop >= this._offsets[i] &&
        (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);

if (isActiveTarget) {
        this._activate(this._targets[i]);
      }
    }
  }

_activate(target) {
    this._activeTarget = target;

this._clear();

const queries = SELECTOR_LINK_ITEMS.split(',').map(
      (selector) => `${selector}[data-bs-target="${target}"],${selector}[href="${target}"]`
    );

const link = SelectorEngine.findOne(queries.join(','), this._config.target);

link.classList.add(CLASS_NAME_ACTIVE);
    if (link.classList.contains(CLASS_NAME_DROPDOWN_ITEM)) {
      SelectorEngine.findOne(
        SELECTOR_DROPDOWN_TOGGLE,
        link.closest(SELECTOR_DROPDOWN)
      ).classList.add(CLASS_NAME_ACTIVE);
    } else {
      SelectorEngine.parents(link, SELECTOR_NAV_LIST_GROUP).forEach((listGroup) => {
        // Set triggered links parents as active
        // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
        SelectorEngine.prev(listGroup, `${SELECTOR_NAV_LINKS}, ${SELECTOR_LIST_ITEMS}`).forEach(
          (item) => item.classList.add(CLASS_NAME_ACTIVE)
        );

// Handle special case when .nav-link is inside .nav-item
        SelectorEngine.prev(listGroup, SELECTOR_NAV_ITEMS).forEach((navItem) => {
          SelectorEngine.children(navItem, SELECTOR_NAV_LINKS).forEach((item) =>
            item.classList.add(CLASS_NAME_ACTIVE)
          );
        });
      });
    }

EventHandler.trigger(this._scrollElement, EVENT_ACTIVATE, {
      relatedTarget: target,
    });
  }

_clear() {
    SelectorEngine.find(SELECTOR_LINK_ITEMS, this._config.target)
      .filter((node) => node.classList.contains(CLASS_NAME_ACTIVE))
      .forEach((node) => node.classList.remove(CLASS_NAME_ACTIVE));
  }

// Static

static jQueryInterface(config) {
    return this.each(function () {
      const data = ScrollSpy.getOrCreateInstance(this, config);

if (typeof config !== 'string') {
        return;
      }

if (typeof data[config] === 'undefined') {
        throw new TypeError(`No method named "${config}"`);
      }

data[config]();
    });
  }
}

/**
 * ------------------------------------------------------------------------
 * Data Api implementation
 * ------------------------------------------------------------------------
 */

EventHandler.on(window, EVENT_LOAD_DATA_API, () => {
  SelectorEngine.find(SELECTOR_DATA_SPY).forEach((spy) => new ScrollSpy(spy));
});

/**
 * ------------------------------------------------------------------------
 * jQuery
 * ------------------------------------------------------------------------
 * add .ScrollSpy to jQuery only if jQuery is present
 */

defineJQueryPlugin(ScrollSpy);

export default ScrollSpy;

${this.title}

Code Editor : scrollspy.js