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twbs--bootstrap/js/dist/carousel.js
2019-01-04 08:29:45 -08:00

666 lines
20 KiB
JavaScript

/*!
* Bootstrap carousel.js v4.2.1 (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(require('jquery'), require('./util.js')) :
typeof define === 'function' && define.amd ? define(['jquery', './util.js'], factory) :
(global = global || self, global.Carousel = factory(global.jQuery, global.Util));
}(this, function ($, Util) { 'use strict';
$ = $ && $.hasOwnProperty('default') ? $['default'] : $;
Util = Util && Util.hasOwnProperty('default') ? Util['default'] : 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 _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
function _objectSpread(target) {
for (var i = 1; i < arguments.length; i++) {
var source = arguments[i] != null ? arguments[i] : {};
var ownKeys = Object.keys(source);
if (typeof Object.getOwnPropertySymbols === 'function') {
ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
return Object.getOwnPropertyDescriptor(source, sym).enumerable;
}));
}
ownKeys.forEach(function (key) {
_defineProperty(target, key, source[key]);
});
}
return target;
}
/**
* ------------------------------------------------------------------------
* Constants
* ------------------------------------------------------------------------
*/
var NAME = 'carousel';
var VERSION = '4.2.1';
var DATA_KEY = 'bs.carousel';
var EVENT_KEY = "." + DATA_KEY;
var DATA_API_KEY = '.data-api';
var JQUERY_NO_CONFLICT = $.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 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 Direction = {
NEXT: 'next',
PREV: 'prev',
LEFT: 'left',
RIGHT: 'right'
};
var Event = {
SLIDE: "slide" + EVENT_KEY,
SLID: "slid" + EVENT_KEY,
KEYDOWN: "keydown" + EVENT_KEY,
MOUSEENTER: "mouseenter" + EVENT_KEY,
MOUSELEAVE: "mouseleave" + EVENT_KEY,
TOUCHSTART: "touchstart" + EVENT_KEY,
TOUCHMOVE: "touchmove" + EVENT_KEY,
TOUCHEND: "touchend" + EVENT_KEY,
POINTERDOWN: "pointerdown" + EVENT_KEY,
POINTERUP: "pointerup" + EVENT_KEY,
DRAG_START: "dragstart" + EVENT_KEY,
LOAD_DATA_API: "load" + EVENT_KEY + DATA_API_KEY,
CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
};
var ClassName = {
CAROUSEL: 'carousel',
ACTIVE: 'active',
SLIDE: 'slide',
RIGHT: 'carousel-item-right',
LEFT: 'carousel-item-left',
NEXT: 'carousel-item-next',
PREV: 'carousel-item-prev',
ITEM: 'carousel-item',
POINTER_EVENT: 'pointer-event'
};
var Selector = {
ACTIVE: '.active',
ACTIVE_ITEM: '.active.carousel-item',
ITEM: '.carousel-item',
ITEM_IMG: '.carousel-item img',
NEXT_PREV: '.carousel-item-next, .carousel-item-prev',
INDICATORS: '.carousel-indicators',
DATA_SLIDE: '[data-slide], [data-slide-to]',
DATA_RIDE: '[data-ride="carousel"]'
};
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._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() {
// Don't call next when the page isn't visible
// or the carousel or its parent isn't visible
if (!document.hidden && $(this._element).is(':visible') && $(this._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.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._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) {
$(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() {
$(this._element).off(EVENT_KEY);
$.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 = _objectSpread({}, Default, config);
Util.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; // 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) {
$(this._element).on(Event.KEYDOWN, function (event) {
return _this2._keydown(event);
});
}
if (this._config.pause === 'hover') {
$(this._element).on(Event.MOUSEENTER, function (event) {
return _this2.pause(event);
}).on(Event.MOUSELEAVE, function (event) {
return _this2.cycle(event);
});
}
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
if (event.originalEvent.touches && event.originalEvent.touches.length > 1) {
_this3.touchDeltaX = 0;
} else {
_this3.touchDeltaX = 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);
}
};
$(this._element.querySelectorAll(Selector.ITEM_IMG)).on(Event.DRAG_START, function (e) {
return e.preventDefault();
});
if (this._pointerEvent) {
$(this._element).on(Event.POINTERDOWN, function (event) {
return start(event);
});
$(this._element).on(Event.POINTERUP, function (event) {
return end(event);
});
this._element.classList.add(ClassName.POINTER_EVENT);
} else {
$(this._element).on(Event.TOUCHSTART, function (event) {
return start(event);
});
$(this._element).on(Event.TOUCHMOVE, function (event) {
return move(event);
});
$(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;
default:
}
};
_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 = $.Event(Event.SLIDE, {
relatedTarget: relatedTarget,
direction: eventDirectionName,
from: fromIndex,
to: targetIndex
});
$(this._element).trigger(slideEvent);
return slideEvent;
};
_proto._setActiveIndicatorElement = function _setActiveIndicatorElement(element) {
if (this._indicatorsElement) {
var indicators = [].slice.call(this._indicatorsElement.querySelectorAll(Selector.ACTIVE));
$(indicators).removeClass(ClassName.ACTIVE);
var nextIndicator = this._indicatorsElement.children[this._getItemIndex(element)];
if (nextIndicator) {
$(nextIndicator).addClass(ClassName.ACTIVE);
}
}
};
_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 = ClassName.LEFT;
orderClassName = ClassName.NEXT;
eventDirectionName = Direction.LEFT;
} else {
directionalClassName = ClassName.RIGHT;
orderClassName = ClassName.PREV;
eventDirectionName = Direction.RIGHT;
}
if (nextElement && $(nextElement).hasClass(ClassName.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);
var slidEvent = $.Event(Event.SLID, {
relatedTarget: nextElement,
direction: eventDirectionName,
from: activeElementIndex,
to: nextElementIndex
});
if ($(this._element).hasClass(ClassName.SLIDE)) {
$(nextElement).addClass(orderClassName);
Util.reflow(nextElement);
$(activeElement).addClass(directionalClassName);
$(nextElement).addClass(directionalClassName);
var nextElementInterval = parseInt(nextElement.getAttribute('data-interval'), 10);
if (nextElementInterval) {
this._config.defaultInterval = this._config.defaultInterval || this._config.interval;
this._config.interval = nextElementInterval;
} else {
this._config.interval = this._config.defaultInterval || this._config.interval;
}
var transitionDuration = Util.getTransitionDurationFromElement(activeElement);
$(activeElement).one(Util.TRANSITION_END, function () {
$(nextElement).removeClass(directionalClassName + " " + orderClassName).addClass(ClassName.ACTIVE);
$(activeElement).removeClass(ClassName.ACTIVE + " " + orderClassName + " " + directionalClassName);
_this4._isSliding = false;
setTimeout(function () {
return $(_this4._element).trigger(slidEvent);
}, 0);
}).emulateTransitionEnd(transitionDuration);
} else {
$(activeElement).removeClass(ClassName.ACTIVE);
$(nextElement).addClass(ClassName.ACTIVE);
this._isSliding = false;
$(this._element).trigger(slidEvent);
}
if (isCycling) {
this.cycle();
}
} // Static
;
Carousel._jQueryInterface = function _jQueryInterface(config) {
return this.each(function () {
var data = $(this).data(DATA_KEY);
var _config = _objectSpread({}, Default, $(this).data());
if (typeof config === 'object') {
_config = _objectSpread({}, _config, config);
}
var action = typeof config === 'string' ? config : _config.slide;
if (!data) {
data = new Carousel(this, _config);
$(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.getSelectorFromElement(this);
if (!selector) {
return;
}
var target = $(selector)[0];
if (!target || !$(target).hasClass(ClassName.CAROUSEL)) {
return;
}
var config = _objectSpread({}, $(target).data(), $(this).data());
var slideIndex = this.getAttribute('data-slide-to');
if (slideIndex) {
config.interval = false;
}
Carousel._jQueryInterface.call($(target), config);
if (slideIndex) {
$(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
* ------------------------------------------------------------------------
*/
$(document).on(Event.CLICK_DATA_API, Selector.DATA_SLIDE, Carousel._dataApiClickHandler);
$(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 = $(carousels[i]);
Carousel._jQueryInterface.call($carousel, $carousel.data());
}
});
/**
* ------------------------------------------------------------------------
* jQuery
* ------------------------------------------------------------------------
*/
$.fn[NAME] = Carousel._jQueryInterface;
$.fn[NAME].Constructor = Carousel;
$.fn[NAME].noConflict = function () {
$.fn[NAME] = JQUERY_NO_CONFLICT;
return Carousel._jQueryInterface;
};
return Carousel;
}));
//# sourceMappingURL=carousel.js.map