ProfessionalWiki / Bootstrap

  * Bootstrap carousel.js v4.6.2 (https://getbootstrap.com/)

  * Copyright 2011-2022 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')) :

})(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;

      Object.defineProperty(target, descriptor.key, descriptor);

    }

  }

  function _createClass(Constructor, protoProps, staticProps) {

    Object.defineProperty(Constructor, "prototype", {

      writable: false

    });

    return Constructor;

  }

  function _extends() {

      for (var i = 1; i < arguments.length; i++) {

        var source = arguments[i];

          if (Object.prototype.hasOwnProperty.call(source, key)) {

            target[key] = source[key];

          }

        }

      }

      return target;

    };

    return _extends.apply(this, arguments);

  }

  /**

   * Constants

   */

  var NAME = 'carousel';

  var VERSION = '4.6.2';

  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 SWIPE_THRESHOLD = 40;

  var CLASS_NAME_CAROUSEL = 'carousel';

  var CLASS_NAME_ACTIVE = 'active';

  var CLASS_NAME_SLIDE = 'slide';

  var CLASS_NAME_RIGHT = 'carousel-item-right';

  var CLASS_NAME_LEFT = 'carousel-item-left';

  var CLASS_NAME_NEXT = 'carousel-item-next';

  var CLASS_NAME_PREV = 'carousel-item-prev';

  var CLASS_NAME_POINTER_EVENT = 'pointer-event';

  var DIRECTION_NEXT = 'next';

  var DIRECTION_PREV = 'prev';

  var DIRECTION_LEFT = 'left';

  var DIRECTION_RIGHT = 'right';

  var EVENT_SLIDE = "slide" + EVENT_KEY;

  var EVENT_SLID = "slid" + EVENT_KEY;

  var EVENT_KEYDOWN = "keydown" + EVENT_KEY;

  var EVENT_MOUSEENTER = "mouseenter" + EVENT_KEY;

  var EVENT_MOUSELEAVE = "mouseleave" + EVENT_KEY;

  var EVENT_TOUCHSTART = "touchstart" + EVENT_KEY;

  var EVENT_TOUCHMOVE = "touchmove" + EVENT_KEY;

  var EVENT_TOUCHEND = "touchend" + EVENT_KEY;

  var EVENT_POINTERDOWN = "pointerdown" + EVENT_KEY;

  var EVENT_POINTERUP = "pointerup" + EVENT_KEY;

  var EVENT_DRAG_START = "dragstart" + EVENT_KEY;

  var EVENT_LOAD_DATA_API = "load" + EVENT_KEY + DATA_API_KEY;

  var EVENT_CLICK_DATA_API = "click" + EVENT_KEY + DATA_API_KEY;

  var SELECTOR_ACTIVE = '.active';

  var SELECTOR_ACTIVE_ITEM = '.active.carousel-item';

  var SELECTOR_ITEM = '.carousel-item';

  var SELECTOR_ITEM_IMG = '.carousel-item img';

  var SELECTOR_NEXT_PREV = '.carousel-item-next, .carousel-item-prev';

  var SELECTOR_INDICATORS = '.carousel-indicators';

  var SELECTOR_DATA_SLIDE = '[data-slide], [data-slide-to]';

  var SELECTOR_DATA_RIDE = '[data-ride="carousel"]';

  var Default = {

    interval: 5000,

    keyboard: true,

    slide: false,

    pause: 'hover',

    wrap: true,

    touch: true

  };

  var DefaultType = {

    interval: '(number|boolean)',

    keyboard: 'boolean',

    slide: '(boolean|string)',

    pause: '(string|boolean)',

    wrap: 'boolean',

    touch: 'boolean'

  };

  var PointerType = {

    TOUCH: 'touch',

    PEN: 'pen'

  };

  /**

   * Class definition

   */

  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._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 start = function start(event) {

        if (_this3._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {

          _this3.touchStartX = event.originalEvent.clientX;

        } else if (!_this3._pointerEvent) {

          _this3.touchStartX = event.originalEvent.touches[0].clientX;

        }

      };

      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;

      }

    };

    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;

}));

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