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Edit File: carousel.js

/*!
  * Bootstrap carousel.js v4.6.1 (https://getbootstrap.com/)
  * Copyright 2011-2021 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
  */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('jquery'), require('./util.js')) :
  typeof define === 'function' && define.amd ? define(['jquery', './util'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Carousel = factory(global.jQuery, global.Util));
})(this, (function ($, Util) { 'use strict';

function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

var $__default = /*#__PURE__*/_interopDefaultLegacy($);
  var Util__default = /*#__PURE__*/_interopDefaultLegacy(Util);

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);
    }
  }

function _createClass(Constructor, protoProps, staticProps) {
    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
    if (staticProps) _defineProperties(Constructor, staticProps);
    return Constructor;
  }

function _extends() {
    _extends = Object.assign || function (target) {
      for (var i = 1; i < arguments.length; i++) {
        var source = arguments[i];

for (var key in source) {
          if (Object.prototype.hasOwnProperty.call(source, key)) {
            target[key] = source[key];
          }
        }
      }

return target;
    };

return _extends.apply(this, arguments);
  }

/**
   * Constants
   */

var NAME = 'carousel';
  var VERSION = '4.6.1';
  var DATA_KEY = 'bs.carousel';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
  var JQUERY_NO_CONFLICT = $__default["default"].fn[NAME];
  var ARROW_LEFT_KEYCODE = 37; // KeyboardEvent.which value for left arrow key

var ARROW_RIGHT_KEYCODE = 39; // KeyboardEvent.which value for right arrow key

var TOUCHEVENT_COMPAT_WAIT = 500; // Time for mouse compat events to fire after touch

var Carousel = /*#__PURE__*/function () {
    function Carousel(element, config) {
      this._items = null;
      this._interval = null;
      this._activeElement = null;
      this._isPaused = false;
      this._isSliding = false;
      this.touchTimeout = null;
      this.touchStartX = 0;
      this.touchDeltaX = 0;
      this._config = this._getConfig(config);
      this._element = element;
      this._indicatorsElement = this._element.querySelector(SELECTOR_INDICATORS);
      this._touchSupported = 'ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0;
      this._pointerEvent = Boolean(window.PointerEvent || window.MSPointerEvent);

this._addEventListeners();
    } // Getters

var _proto = Carousel.prototype;

// Public
    _proto.next = function next() {
      if (!this._isSliding) {
        this._slide(DIRECTION_NEXT);
      }
    };

_proto.nextWhenVisible = function nextWhenVisible() {
      var $element = $__default["default"](this._element); // Don't call next when the page isn't visible
      // or the carousel or its parent isn't visible

if (!document.hidden && $element.is(':visible') && $element.css('visibility') !== 'hidden') {
        this.next();
      }
    };

_proto.prev = function prev() {
      if (!this._isSliding) {
        this._slide(DIRECTION_PREV);
      }
    };

_proto.pause = function pause(event) {
      if (!event) {
        this._isPaused = true;
      }

if (this._element.querySelector(SELECTOR_NEXT_PREV)) {
        Util__default["default"].triggerTransitionEnd(this._element);
        this.cycle(true);
      }

clearInterval(this._interval);
      this._interval = null;
    };

_proto.cycle = function cycle(event) {
      if (!event) {
        this._isPaused = false;
      }

if (this._interval) {
        clearInterval(this._interval);
        this._interval = null;
      }

if (this._config.interval && !this._isPaused) {
        this._updateInterval();

this._interval = setInterval((document.visibilityState ? this.nextWhenVisible : this.next).bind(this), this._config.interval);
      }
    };

_proto.to = function to(index) {
      var _this = this;

this._activeElement = this._element.querySelector(SELECTOR_ACTIVE_ITEM);

var activeIndex = this._getItemIndex(this._activeElement);

if (index > this._items.length - 1 || index < 0) {
        return;
      }

if (this._isSliding) {
        $__default["default"](this._element).one(EVENT_SLID, function () {
          return _this.to(index);
        });
        return;
      }

if (activeIndex === index) {
        this.pause();
        this.cycle();
        return;
      }

var direction = index > activeIndex ? DIRECTION_NEXT : DIRECTION_PREV;

this._slide(direction, this._items[index]);
    };

_proto.dispose = function dispose() {
      $__default["default"](this._element).off(EVENT_KEY);
      $__default["default"].removeData(this._element, DATA_KEY);
      this._items = null;
      this._config = null;
      this._element = null;
      this._interval = null;
      this._isPaused = null;
      this._isSliding = null;
      this._activeElement = null;
      this._indicatorsElement = null;
    } // Private
    ;

_proto._getConfig = function _getConfig(config) {
      config = _extends({}, Default, config);
      Util__default["default"].typeCheckConfig(NAME, config, DefaultType);
      return config;
    };

_proto._handleSwipe = function _handleSwipe() {
      var absDeltax = Math.abs(this.touchDeltaX);

if (absDeltax <= SWIPE_THRESHOLD) {
        return;
      }

var direction = absDeltax / this.touchDeltaX;
      this.touchDeltaX = 0; // swipe left

if (direction > 0) {
        this.prev();
      } // swipe right

if (direction < 0) {
        this.next();
      }
    };

_proto._addEventListeners = function _addEventListeners() {
      var _this2 = this;

if (this._config.keyboard) {
        $__default["default"](this._element).on(EVENT_KEYDOWN, function (event) {
          return _this2._keydown(event);
        });
      }

if (this._config.pause === 'hover') {
        $__default["default"](this._element).on(EVENT_MOUSEENTER, function (event) {
          return _this2.pause(event);
        }).on(EVENT_MOUSELEAVE, function (event) {
          return _this2.cycle(event);
        });
      }

if (this._config.touch) {
        this._addTouchEventListeners();
      }
    };

_proto._addTouchEventListeners = function _addTouchEventListeners() {
      var _this3 = this;

if (!this._touchSupported) {
        return;
      }

var move = function move(event) {
        // ensure swiping with one touch and not pinching
        _this3.touchDeltaX = event.originalEvent.touches && event.originalEvent.touches.length > 1 ? 0 : event.originalEvent.touches[0].clientX - _this3.touchStartX;
      };

var end = function end(event) {
        if (_this3._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {
          _this3.touchDeltaX = event.originalEvent.clientX - _this3.touchStartX;
        }

_this3._handleSwipe();

if (_this3._config.pause === 'hover') {
          // If it's a touch-enabled device, mouseenter/leave are fired as
          // part of the mouse compatibility events on first tap - the carousel
          // would stop cycling until user tapped out of it;
          // here, we listen for touchend, explicitly pause the carousel
          // (as if it's the second time we tap on it, mouseenter compat event
          // is NOT fired) and after a timeout (to allow for mouse compatibility
          // events to fire) we explicitly restart cycling
          _this3.pause();

if (_this3.touchTimeout) {
            clearTimeout(_this3.touchTimeout);
          }

_this3.touchTimeout = setTimeout(function (event) {
            return _this3.cycle(event);
          }, TOUCHEVENT_COMPAT_WAIT + _this3._config.interval);
        }
      };

$__default["default"](this._element.querySelectorAll(SELECTOR_ITEM_IMG)).on(EVENT_DRAG_START, function (e) {
        return e.preventDefault();
      });

if (this._pointerEvent) {
        $__default["default"](this._element).on(EVENT_POINTERDOWN, function (event) {
          return start(event);
        });
        $__default["default"](this._element).on(EVENT_POINTERUP, function (event) {
          return end(event);
        });

this._element.classList.add(CLASS_NAME_POINTER_EVENT);
      } else {
        $__default["default"](this._element).on(EVENT_TOUCHSTART, function (event) {
          return start(event);
        });
        $__default["default"](this._element).on(EVENT_TOUCHMOVE, function (event) {
          return move(event);
        });
        $__default["default"](this._element).on(EVENT_TOUCHEND, function (event) {
          return end(event);
        });
      }
    };

_proto._keydown = function _keydown(event) {
      if (/input|textarea/i.test(event.target.tagName)) {
        return;
      }

switch (event.which) {
        case ARROW_LEFT_KEYCODE:
          event.preventDefault();
          this.prev();
          break;

case ARROW_RIGHT_KEYCODE:
          event.preventDefault();
          this.next();
          break;
      }
    };

_proto._getItemIndex = function _getItemIndex(element) {
      this._items = element && element.parentNode ? [].slice.call(element.parentNode.querySelectorAll(SELECTOR_ITEM)) : [];
      return this._items.indexOf(element);
    };

_proto._getItemByDirection = function _getItemByDirection(direction, activeElement) {
      var isNextDirection = direction === DIRECTION_NEXT;
      var isPrevDirection = direction === DIRECTION_PREV;

var activeIndex = this._getItemIndex(activeElement);

var lastItemIndex = this._items.length - 1;
      var isGoingToWrap = isPrevDirection && activeIndex === 0 || isNextDirection && activeIndex === lastItemIndex;

if (isGoingToWrap && !this._config.wrap) {
        return activeElement;
      }

var delta = direction === DIRECTION_PREV ? -1 : 1;
      var itemIndex = (activeIndex + delta) % this._items.length;
      return itemIndex === -1 ? this._items[this._items.length - 1] : this._items[itemIndex];
    };

_proto._triggerSlideEvent = function _triggerSlideEvent(relatedTarget, eventDirectionName) {
      var targetIndex = this._getItemIndex(relatedTarget);

var fromIndex = this._getItemIndex(this._element.querySelector(SELECTOR_ACTIVE_ITEM));

var slideEvent = $__default["default"].Event(EVENT_SLIDE, {
        relatedTarget: relatedTarget,
        direction: eventDirectionName,
        from: fromIndex,
        to: targetIndex
      });
      $__default["default"](this._element).trigger(slideEvent);
      return slideEvent;
    };

_proto._setActiveIndicatorElement = function _setActiveIndicatorElement(element) {
      if (this._indicatorsElement) {
        var indicators = [].slice.call(this._indicatorsElement.querySelectorAll(SELECTOR_ACTIVE));
        $__default["default"](indicators).removeClass(CLASS_NAME_ACTIVE);

var nextIndicator = this._indicatorsElement.children[this._getItemIndex(element)];

if (nextIndicator) {
          $__default["default"](nextIndicator).addClass(CLASS_NAME_ACTIVE);
        }
      }
    };

_proto._updateInterval = function _updateInterval() {
      var element = this._activeElement || this._element.querySelector(SELECTOR_ACTIVE_ITEM);

if (!element) {
        return;
      }

var elementInterval = parseInt(element.getAttribute('data-interval'), 10);

if (elementInterval) {
        this._config.defaultInterval = this._config.defaultInterval || this._config.interval;
        this._config.interval = elementInterval;
      } else {
        this._config.interval = this._config.defaultInterval || this._config.interval;
      }
    };

_proto._slide = function _slide(direction, element) {
      var _this4 = this;

var activeElement = this._element.querySelector(SELECTOR_ACTIVE_ITEM);

var activeElementIndex = this._getItemIndex(activeElement);

var nextElement = element || activeElement && this._getItemByDirection(direction, activeElement);

var nextElementIndex = this._getItemIndex(nextElement);

var isCycling = Boolean(this._interval);
      var directionalClassName;
      var orderClassName;
      var eventDirectionName;

if (direction === DIRECTION_NEXT) {
        directionalClassName = CLASS_NAME_LEFT;
        orderClassName = CLASS_NAME_NEXT;
        eventDirectionName = DIRECTION_LEFT;
      } else {
        directionalClassName = CLASS_NAME_RIGHT;
        orderClassName = CLASS_NAME_PREV;
        eventDirectionName = DIRECTION_RIGHT;
      }

if (nextElement && $__default["default"](nextElement).hasClass(CLASS_NAME_ACTIVE)) {
        this._isSliding = false;
        return;
      }

var slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName);

if (slideEvent.isDefaultPrevented()) {
        return;
      }

if (!activeElement || !nextElement) {
        // Some weirdness is happening, so we bail
        return;
      }

this._isSliding = true;

if (isCycling) {
        this.pause();
      }

this._setActiveIndicatorElement(nextElement);

this._activeElement = nextElement;
      var slidEvent = $__default["default"].Event(EVENT_SLID, {
        relatedTarget: nextElement,
        direction: eventDirectionName,
        from: activeElementIndex,
        to: nextElementIndex
      });

if ($__default["default"](this._element).hasClass(CLASS_NAME_SLIDE)) {
        $__default["default"](nextElement).addClass(orderClassName);
        Util__default["default"].reflow(nextElement);
        $__default["default"](activeElement).addClass(directionalClassName);
        $__default["default"](nextElement).addClass(directionalClassName);
        var transitionDuration = Util__default["default"].getTransitionDurationFromElement(activeElement);
        $__default["default"](activeElement).one(Util__default["default"].TRANSITION_END, function () {
          $__default["default"](nextElement).removeClass(directionalClassName + " " + orderClassName).addClass(CLASS_NAME_ACTIVE);
          $__default["default"](activeElement).removeClass(CLASS_NAME_ACTIVE + " " + orderClassName + " " + directionalClassName);
          _this4._isSliding = false;
          setTimeout(function () {
            return $__default["default"](_this4._element).trigger(slidEvent);
          }, 0);
        }).emulateTransitionEnd(transitionDuration);
      } else {
        $__default["default"](activeElement).removeClass(CLASS_NAME_ACTIVE);
        $__default["default"](nextElement).addClass(CLASS_NAME_ACTIVE);
        this._isSliding = false;
        $__default["default"](this._element).trigger(slidEvent);
      }

if (isCycling) {
        this.cycle();
      }
    } // Static
    ;

Carousel._jQueryInterface = function _jQueryInterface(config) {
      return this.each(function () {
        var data = $__default["default"](this).data(DATA_KEY);

var _config = _extends({}, Default, $__default["default"](this).data());

if (typeof config === 'object') {
          _config = _extends({}, _config, config);
        }

var action = typeof config === 'string' ? config : _config.slide;

if (!data) {
          data = new Carousel(this, _config);
          $__default["default"](this).data(DATA_KEY, data);
        }

if (typeof config === 'number') {
          data.to(config);
        } else if (typeof action === 'string') {
          if (typeof data[action] === 'undefined') {
            throw new TypeError("No method named \"" + action + "\"");
          }

data[action]();
        } else if (_config.interval && _config.ride) {
          data.pause();
          data.cycle();
        }
      });
    };

Carousel._dataApiClickHandler = function _dataApiClickHandler(event) {
      var selector = Util__default["default"].getSelectorFromElement(this);

if (!selector) {
        return;
      }

var target = $__default["default"](selector)[0];

if (!target || !$__default["default"](target).hasClass(CLASS_NAME_CAROUSEL)) {
        return;
      }

var config = _extends({}, $__default["default"](target).data(), $__default["default"](this).data());

var slideIndex = this.getAttribute('data-slide-to');

if (slideIndex) {
        config.interval = false;
      }

Carousel._jQueryInterface.call($__default["default"](target), config);

if (slideIndex) {
        $__default["default"](target).data(DATA_KEY).to(slideIndex);
      }

event.preventDefault();
    };

_createClass(Carousel, null, [{
      key: "VERSION",
      get: function get() {
        return VERSION;
      }
    }, {
      key: "Default",
      get: function get() {
        return Default;
      }
    }]);

return Carousel;
  }();
  /**
   * Data API implementation
   */

$__default["default"](document).on(EVENT_CLICK_DATA_API, SELECTOR_DATA_SLIDE, Carousel._dataApiClickHandler);
  $__default["default"](window).on(EVENT_LOAD_DATA_API, function () {
    var carousels = [].slice.call(document.querySelectorAll(SELECTOR_DATA_RIDE));

for (var i = 0, len = carousels.length; i < len; i++) {
      var $carousel = $__default["default"](carousels[i]);

Carousel._jQueryInterface.call($carousel, $carousel.data());
    }
  });
  /**
   * jQuery
   */

$__default["default"].fn[NAME] = Carousel._jQueryInterface;
  $__default["default"].fn[NAME].Constructor = Carousel;

$__default["default"].fn[NAME].noConflict = function () {
    $__default["default"].fn[NAME] = JQUERY_NO_CONFLICT;
    return Carousel._jQueryInterface;
  };

return Carousel;

}));
//# sourceMappingURL=carousel.js.map

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