import { E as EventHandler, S as SelectorEngine, d as defineJQueryPlugin, B as BaseComponent, f as getSelectorFromElement, M as Manipulator, h as getElement, a as typeCheckConfig } from './dom.js?5.1.3';

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v5.1.3): scrollspy.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
 * --------------------------------------------------------------------------
 */
/**
 * ------------------------------------------------------------------------
 * 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}${DATA_API_KEY}`;
const CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item';
const CLASS_NAME_ACTIVE = 'active';
const SELECTOR_DATA_SPY = '[data-bs-spy="scroll"]';
const SELECTOR_NAV_LIST_GROUP = '.nav, .list-group';
const SELECTOR_NAV_LINKS = '.nav-link';
const SELECTOR_NAV_ITEMS = '.nav-item';
const SELECTOR_LIST_ITEMS = '.list-group-item';
const SELECTOR_LINK_ITEMS = `${SELECTOR_NAV_LINKS}, ${SELECTOR_LIST_ITEMS}, .${CLASS_NAME_DROPDOWN_ITEM}`;
const SELECTOR_DROPDOWN = '.dropdown';
const SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle';
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);

window.bootstrap = window.bootstrap || {};
window.bootstrap.Scrollspy = ScrollSpy;

if (Joomla && Joomla.getOptions) {
  // Get the elements/configurations from the PHP
  const scrollspys = Joomla.getOptions('bootstrap.scrollspy'); // Initialise the elements

  if (typeof scrollspys === 'object' && scrollspys !== null) {
    Object.keys(scrollspys).forEach(scrollspy => {
      const opt = scrollspys[scrollspy];
      const options = {
        offset: opt.offset ? opt.offset : 10,
        method: opt.method ? opt.method : 'auto'
      };

      if (opt.target) {
        options.target = opt.target;
      }

      const elements = Array.from(document.querySelectorAll(scrollspy));

      if (elements.length) {
        elements.map(el => new window.bootstrap.Scrollspy(el, options));
      }
    });
  }
}

export { ScrollSpy as S };