twbs--bootstrap/js/dist/dom/selector-engine.js

/*!
  * Bootstrap selector-engine.js v4.3.1 (https://getbootstrap.com/)
  * Copyright 2011-2019 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = global || self, global.SelectorEngine = factory());
}(this, function () { 'use strict';

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v4.3.1): util/index.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  var MAX_UID = 1000000;
  var _window = window,
      jQuery = _window.jQuery; // Shoutout AngusCroll (https://goo.gl/pxwQGp)
  /**
   * --------------------------------------------------------------------------
   * Public Util Api
   * --------------------------------------------------------------------------
   */


  var getUID = function getUID(prefix) {
    do {
      // eslint-disable-next-line no-bitwise
      prefix += ~~(Math.random() * MAX_UID); // "~~" acts like a faster Math.floor() here
    } while (document.getElementById(prefix));

    return prefix;
  };

  var makeArray = function makeArray(nodeList) {
    if (!nodeList) {
      return [];
    }

    return [].slice.call(nodeList);
  };

  /* istanbul ignore file */
  var _Element$prototype = Element.prototype,
      matches = _Element$prototype.matches,
      closest = _Element$prototype.closest;
  var find = Element.prototype.querySelectorAll;
  var findOne = Element.prototype.querySelector;

  var createCustomEvent = function createCustomEvent(eventName, params) {
    var cEvent = new CustomEvent(eventName, params);
    return cEvent;
  };

  if (typeof window.CustomEvent !== 'function') {
    createCustomEvent = function createCustomEvent(eventName, params) {
      params = params || {
        bubbles: false,
        cancelable: false,
        detail: null
      };
      var evt = document.createEvent('CustomEvent');
      evt.initCustomEvent(eventName, params.bubbles, params.cancelable, params.detail);
      return evt;
    };
  }

  var workingDefaultPrevented = function () {
    var e = document.createEvent('CustomEvent');
    e.initEvent('Bootstrap', true, true);
    e.preventDefault();
    return e.defaultPrevented;
  }();

  if (!workingDefaultPrevented) {
    var origPreventDefault = Event.prototype.preventDefault;

    Event.prototype.preventDefault = function () {
      if (!this.cancelable) {
        return;
      }

      origPreventDefault.call(this);
      Object.defineProperty(this, 'defaultPrevented', {
        get: function get() {
          return true;
        },
        configurable: true
      });
    };
  } // MSEdge resets defaultPrevented flag upon dispatchEvent call if at least one listener is attached


  var defaultPreventedPreservedOnDispatch = function () {
    var e = createCustomEvent('Bootstrap', {
      cancelable: true
    });
    var element = document.createElement('div');
    element.addEventListener('Bootstrap', function () {
      return null;
    });
    e.preventDefault();
    element.dispatchEvent(e);
    return e.defaultPrevented;
  }();

  if (!matches) {
    matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
  }

  if (!closest) {
    closest = function closest(selector) {
      var element = this;

      do {
        if (matches.call(element, selector)) {
          return element;
        }

        element = element.parentElement || element.parentNode;
      } while (element !== null && element.nodeType === 1);

      return null;
    };
  }

  var scopeSelectorRegex = /:scope\b/;

  var supportScopeQuery = function () {
    var element = document.createElement('div');

    try {
      element.querySelectorAll(':scope *');
    } catch (error) {
      return false;
    }

    return true;
  }();

  if (!supportScopeQuery) {
    find = function find(selector) {
      if (!scopeSelectorRegex.test(selector)) {
        return this.querySelectorAll(selector);
      }

      var hasId = Boolean(this.id);

      if (!hasId) {
        this.id = getUID('scope');
      }

      var nodeList = null;

      try {
        selector = selector.replace(scopeSelectorRegex, "#" + this.id);
        nodeList = this.querySelectorAll(selector);
      } finally {
        if (!hasId) {
          this.removeAttribute('id');
        }
      }

      return nodeList;
    };

    findOne = function findOne(selector) {
      if (!scopeSelectorRegex.test(selector)) {
        return this.querySelector(selector);
      }

      var matches = find.call(this, selector);

      if (typeof matches[0] !== 'undefined') {
        return matches[0];
      }

      return null;
    };
  }

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v4.3.1): dom/selector-engine.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */

  var NODE_TEXT = 3;
  var SelectorEngine = {
    matches: function matches$1(element, selector) {
      return matches.call(element, selector);
    },
    find: function find$1(selector, element) {
      if (element === void 0) {
        element = document.documentElement;
      }

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

      return find.call(element, selector);
    },
    findOne: function findOne$1(selector, element) {
      if (element === void 0) {
        element = document.documentElement;
      }

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

      return findOne.call(element, selector);
    },
    children: function children(element, selector) {
      var _this = this;

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

      var children = makeArray(element.children);
      return children.filter(function (child) {
        return _this.matches(child, selector);
      });
    },
    parents: function parents(element, selector) {
      if (typeof selector !== 'string') {
        return null;
      }

      var parents = [];
      var ancestor = element.parentNode;

      while (ancestor && ancestor.nodeType === Node.ELEMENT_NODE && ancestor.nodeType !== NODE_TEXT) {
        if (this.matches(ancestor, selector)) {
          parents.push(ancestor);
        }

        ancestor = ancestor.parentNode;
      }

      return parents;
    },
    closest: function closest$1(element, selector) {
      if (typeof selector !== 'string') {
        return null;
      }

      return closest.call(element, selector);
    },
    prev: function prev(element, selector) {
      if (typeof selector !== 'string') {
        return null;
      }

      var siblings = [];
      var previous = element.previousSibling;

      while (previous && previous.nodeType === Node.ELEMENT_NODE && previous.nodeType !== NODE_TEXT) {
        if (this.matches(previous, selector)) {
          siblings.push(previous);
        }

        previous = previous.previousSibling;
      }

      return siblings;
    }
  };

  return SelectorEngine;

}));
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