talos

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/**
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 * --------------------------------------------------------------------------
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 * Bootstrap (v4.6.1): carousel.js
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 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
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 * --------------------------------------------------------------------------
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 */
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import $ from 'jquery'
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import Util from './util'
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/**
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 * Constants
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 */
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const NAME = 'carousel'
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const VERSION = '4.6.1'
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const DATA_KEY = 'bs.carousel'
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const EVENT_KEY = `.${DATA_KEY}`
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const DATA_API_KEY = '.data-api'
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const JQUERY_NO_CONFLICT = $.fn[NAME]
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const ARROW_LEFT_KEYCODE = 37 // KeyboardEvent.which value for left arrow key
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const ARROW_RIGHT_KEYCODE = 39 // KeyboardEvent.which value for right arrow key
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const TOUCHEVENT_COMPAT_WAIT = 500 // Time for mouse compat events to fire after touch
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const SWIPE_THRESHOLD = 40
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const CLASS_NAME_CAROUSEL = 'carousel'
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const CLASS_NAME_ACTIVE = 'active'
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const CLASS_NAME_SLIDE = 'slide'
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const CLASS_NAME_RIGHT = 'carousel-item-right'
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const CLASS_NAME_LEFT = 'carousel-item-left'
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const CLASS_NAME_NEXT = 'carousel-item-next'
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const CLASS_NAME_PREV = 'carousel-item-prev'
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const CLASS_NAME_POINTER_EVENT = 'pointer-event'
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const DIRECTION_NEXT = 'next'
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const DIRECTION_PREV = 'prev'
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const DIRECTION_LEFT = 'left'
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const DIRECTION_RIGHT = 'right'
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const EVENT_SLIDE = `slide${EVENT_KEY}`
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const EVENT_SLID = `slid${EVENT_KEY}`
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const EVENT_KEYDOWN = `keydown${EVENT_KEY}`
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const EVENT_MOUSEENTER = `mouseenter${EVENT_KEY}`
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const EVENT_MOUSELEAVE = `mouseleave${EVENT_KEY}`
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const EVENT_TOUCHSTART = `touchstart${EVENT_KEY}`
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const EVENT_TOUCHMOVE = `touchmove${EVENT_KEY}`
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const EVENT_TOUCHEND = `touchend${EVENT_KEY}`
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const EVENT_POINTERDOWN = `pointerdown${EVENT_KEY}`
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const EVENT_POINTERUP = `pointerup${EVENT_KEY}`
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const EVENT_DRAG_START = `dragstart${EVENT_KEY}`
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const EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`
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const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`
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const SELECTOR_ACTIVE = '.active'
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const SELECTOR_ACTIVE_ITEM = '.active.carousel-item'
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const SELECTOR_ITEM = '.carousel-item'
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const SELECTOR_ITEM_IMG = '.carousel-item img'
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const SELECTOR_NEXT_PREV = '.carousel-item-next, .carousel-item-prev'
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const SELECTOR_INDICATORS = '.carousel-indicators'
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const SELECTOR_DATA_SLIDE = '[data-slide], [data-slide-to]'
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const SELECTOR_DATA_RIDE = '[data-ride="carousel"]'
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const Default = {
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  interval: 5000,
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  keyboard: true,
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  slide: false,
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  pause: 'hover',
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  wrap: true,
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  touch: true
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}
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const DefaultType = {
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  interval: '(number|boolean)',
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  keyboard: 'boolean',
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  slide: '(boolean|string)',
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  pause: '(string|boolean)',
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  wrap: 'boolean',
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  touch: 'boolean'
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}
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const PointerType = {
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  TOUCH: 'touch',
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  PEN: 'pen'
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}
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/**
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 * Class definition
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 */
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class Carousel {
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  constructor(element, config) {
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    this._items = null
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    this._interval = null
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    this._activeElement = null
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    this._isPaused = false
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    this._isSliding = false
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    this.touchTimeout = null
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    this.touchStartX = 0
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    this.touchDeltaX = 0
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    this._config = this._getConfig(config)
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    this._element = element
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    this._indicatorsElement = this._element.querySelector(SELECTOR_INDICATORS)
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    this._touchSupported = 'ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0
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    this._pointerEvent = Boolean(window.PointerEvent || window.MSPointerEvent)
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    this._addEventListeners()
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  }
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  // Getters
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  static get VERSION() {
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    return VERSION
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  }
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  static get Default() {
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    return Default
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  }
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  // Public
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  next() {
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    if (!this._isSliding) {
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      this._slide(DIRECTION_NEXT)
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    }
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  }
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  nextWhenVisible() {
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    const $element = $(this._element)
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    // Don't call next when the page isn't visible
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    // or the carousel or its parent isn't visible
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    if (!document.hidden &&
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      ($element.is(':visible') && $element.css('visibility') !== 'hidden')) {
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      this.next()
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    }
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  }
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  prev() {
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    if (!this._isSliding) {
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      this._slide(DIRECTION_PREV)
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    }
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  }
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  pause(event) {
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    if (!event) {
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      this._isPaused = true
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    }
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    if (this._element.querySelector(SELECTOR_NEXT_PREV)) {
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      Util.triggerTransitionEnd(this._element)
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      this.cycle(true)
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    }
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    clearInterval(this._interval)
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    this._interval = null
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  }
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  cycle(event) {
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    if (!event) {
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      this._isPaused = false
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    }
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    if (this._interval) {
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      clearInterval(this._interval)
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      this._interval = null
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    }
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    if (this._config.interval && !this._isPaused) {
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      this._updateInterval()
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      this._interval = setInterval(
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        (document.visibilityState ? this.nextWhenVisible : this.next).bind(this),
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        this._config.interval
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      )
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    }
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  }
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  to(index) {
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    this._activeElement = this._element.querySelector(SELECTOR_ACTIVE_ITEM)
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    const activeIndex = this._getItemIndex(this._activeElement)
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    if (index > this._items.length - 1 || index < 0) {
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      return
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    }
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    if (this._isSliding) {
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      $(this._element).one(EVENT_SLID, () => this.to(index))
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      return
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    }
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    if (activeIndex === index) {
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      this.pause()
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      this.cycle()
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      return
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    }
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    const direction = index > activeIndex ?
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      DIRECTION_NEXT :
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      DIRECTION_PREV
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    this._slide(direction, this._items[index])
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  }
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  dispose() {
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    $(this._element).off(EVENT_KEY)
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    $.removeData(this._element, DATA_KEY)
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    this._items = null
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    this._config = null
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    this._element = null
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    this._interval = null
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    this._isPaused = null
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    this._isSliding = null
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    this._activeElement = null
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    this._indicatorsElement = null
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  }
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  // Private
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  _getConfig(config) {
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    config = {
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      ...Default,
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      ...config
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    }
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    Util.typeCheckConfig(NAME, config, DefaultType)
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    return config
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  }
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  _handleSwipe() {
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    const absDeltax = Math.abs(this.touchDeltaX)
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    if (absDeltax <= SWIPE_THRESHOLD) {
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      return
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    }
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    const direction = absDeltax / this.touchDeltaX
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    this.touchDeltaX = 0
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    // swipe left
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    if (direction > 0) {
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      this.prev()
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    }
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    // swipe right
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    if (direction < 0) {
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      this.next()
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    }
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  }
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  _addEventListeners() {
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    if (this._config.keyboard) {
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      $(this._element).on(EVENT_KEYDOWN, event => this._keydown(event))
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    }
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    if (this._config.pause === 'hover') {
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      $(this._element)
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        .on(EVENT_MOUSEENTER, event => this.pause(event))
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        .on(EVENT_MOUSELEAVE, event => this.cycle(event))
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    }
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    if (this._config.touch) {
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      this._addTouchEventListeners()
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    }
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  }
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  _addTouchEventListeners() {
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    if (!this._touchSupported) {
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      return
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    }
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    const start = event => {
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      if (this._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {
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        this.touchStartX = event.originalEvent.clientX
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      } else if (!this._pointerEvent) {
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        this.touchStartX = event.originalEvent.touches[0].clientX
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      }
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    }
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    const move = event => {
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      // ensure swiping with one touch and not pinching
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      this.touchDeltaX = event.originalEvent.touches && event.originalEvent.touches.length > 1 ?
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        0 :
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        event.originalEvent.touches[0].clientX - this.touchStartX
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    }
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    const end = event => {
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      if (this._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {
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        this.touchDeltaX = event.originalEvent.clientX - this.touchStartX
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      }
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      this._handleSwipe()
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      if (this._config.pause === 'hover') {
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        // If it's a touch-enabled device, mouseenter/leave are fired as
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        // part of the mouse compatibility events on first tap - the carousel
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        // would stop cycling until user tapped out of it;
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        // here, we listen for touchend, explicitly pause the carousel
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        // (as if it's the second time we tap on it, mouseenter compat event
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        // is NOT fired) and after a timeout (to allow for mouse compatibility
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        // events to fire) we explicitly restart cycling
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        this.pause()
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        if (this.touchTimeout) {
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          clearTimeout(this.touchTimeout)
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        }
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        this.touchTimeout = setTimeout(event => this.cycle(event), TOUCHEVENT_COMPAT_WAIT + this._config.interval)
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      }
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    }
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    $(this._element.querySelectorAll(SELECTOR_ITEM_IMG))
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      .on(EVENT_DRAG_START, e => e.preventDefault())
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    if (this._pointerEvent) {
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      $(this._element).on(EVENT_POINTERDOWN, event => start(event))
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      $(this._element).on(EVENT_POINTERUP, event => end(event))
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      this._element.classList.add(CLASS_NAME_POINTER_EVENT)
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    } else {
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      $(this._element).on(EVENT_TOUCHSTART, event => start(event))
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      $(this._element).on(EVENT_TOUCHMOVE, event => move(event))
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      $(this._element).on(EVENT_TOUCHEND, event => end(event))
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    }
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  }
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  _keydown(event) {
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    if (/input|textarea/i.test(event.target.tagName)) {
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      return
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    }
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    switch (event.which) {
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      case ARROW_LEFT_KEYCODE:
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        event.preventDefault()
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        this.prev()
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        break
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      case ARROW_RIGHT_KEYCODE:
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        event.preventDefault()
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        this.next()
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        break
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      default:
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    }
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  }
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  _getItemIndex(element) {
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    this._items = element && element.parentNode ?
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      [].slice.call(element.parentNode.querySelectorAll(SELECTOR_ITEM)) :
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      []
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    return this._items.indexOf(element)
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  }
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  _getItemByDirection(direction, activeElement) {
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    const isNextDirection = direction === DIRECTION_NEXT
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    const isPrevDirection = direction === DIRECTION_PREV
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    const activeIndex = this._getItemIndex(activeElement)
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    const lastItemIndex = this._items.length - 1
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    const isGoingToWrap = isPrevDirection && activeIndex === 0 ||
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                            isNextDirection && activeIndex === lastItemIndex
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    if (isGoingToWrap && !this._config.wrap) {
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      return activeElement
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    }
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    const delta = direction === DIRECTION_PREV ? -1 : 1
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    const itemIndex = (activeIndex + delta) % this._items.length
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    return itemIndex === -1 ?
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      this._items[this._items.length - 1] : this._items[itemIndex]
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  }
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  _triggerSlideEvent(relatedTarget, eventDirectionName) {
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    const targetIndex = this._getItemIndex(relatedTarget)
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    const fromIndex = this._getItemIndex(this._element.querySelector(SELECTOR_ACTIVE_ITEM))
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    const slideEvent = $.Event(EVENT_SLIDE, {
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      relatedTarget,
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      direction: eventDirectionName,
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      from: fromIndex,
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      to: targetIndex
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    })
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    $(this._element).trigger(slideEvent)
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    return slideEvent
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  }
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  _setActiveIndicatorElement(element) {
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    if (this._indicatorsElement) {
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      const indicators = [].slice.call(this._indicatorsElement.querySelectorAll(SELECTOR_ACTIVE))
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      $(indicators).removeClass(CLASS_NAME_ACTIVE)
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      const nextIndicator = this._indicatorsElement.children[
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        this._getItemIndex(element)
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      ]
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      if (nextIndicator) {
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        $(nextIndicator).addClass(CLASS_NAME_ACTIVE)
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      }
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    }
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  }
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  _updateInterval() {
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    const element = this._activeElement || this._element.querySelector(SELECTOR_ACTIVE_ITEM)
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401
    if (!element) {
402
      return
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    }
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    const elementInterval = parseInt(element.getAttribute('data-interval'), 10)
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    if (elementInterval) {
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      this._config.defaultInterval = this._config.defaultInterval || this._config.interval
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      this._config.interval = elementInterval
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    } else {
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      this._config.interval = this._config.defaultInterval || this._config.interval
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    }
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  }
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  _slide(direction, element) {
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    const activeElement = this._element.querySelector(SELECTOR_ACTIVE_ITEM)
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    const activeElementIndex = this._getItemIndex(activeElement)
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    const nextElement = element || activeElement &&
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      this._getItemByDirection(direction, activeElement)
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    const nextElementIndex = this._getItemIndex(nextElement)
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    const isCycling = Boolean(this._interval)
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    let directionalClassName
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    let orderClassName
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    let eventDirectionName
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    if (direction === DIRECTION_NEXT) {
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      directionalClassName = CLASS_NAME_LEFT
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      orderClassName = CLASS_NAME_NEXT
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      eventDirectionName = DIRECTION_LEFT
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    } else {
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      directionalClassName = CLASS_NAME_RIGHT
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      orderClassName = CLASS_NAME_PREV
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      eventDirectionName = DIRECTION_RIGHT
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    }
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    if (nextElement && $(nextElement).hasClass(CLASS_NAME_ACTIVE)) {
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      this._isSliding = false
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      return
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    }
441

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    const slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName)
443
    if (slideEvent.isDefaultPrevented()) {
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      return
445
    }
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    if (!activeElement || !nextElement) {
448
      // Some weirdness is happening, so we bail
449
      return
450
    }
451

452
    this._isSliding = true
453

454
    if (isCycling) {
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      this.pause()
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    }
457

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    this._setActiveIndicatorElement(nextElement)
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    this._activeElement = nextElement
460

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    const slidEvent = $.Event(EVENT_SLID, {
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      relatedTarget: nextElement,
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      direction: eventDirectionName,
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      from: activeElementIndex,
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      to: nextElementIndex
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    })
467

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    if ($(this._element).hasClass(CLASS_NAME_SLIDE)) {
469
      $(nextElement).addClass(orderClassName)
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      Util.reflow(nextElement)
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473
      $(activeElement).addClass(directionalClassName)
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      $(nextElement).addClass(directionalClassName)
475

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      const transitionDuration = Util.getTransitionDurationFromElement(activeElement)
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      $(activeElement)
479
        .one(Util.TRANSITION_END, () => {
480
          $(nextElement)
481
            .removeClass(`${directionalClassName} ${orderClassName}`)
482
            .addClass(CLASS_NAME_ACTIVE)
483

484
          $(activeElement).removeClass(`${CLASS_NAME_ACTIVE} ${orderClassName} ${directionalClassName}`)
485

486
          this._isSliding = false
487

488
          setTimeout(() => $(this._element).trigger(slidEvent), 0)
489
        })
490
        .emulateTransitionEnd(transitionDuration)
491
    } else {
492
      $(activeElement).removeClass(CLASS_NAME_ACTIVE)
493
      $(nextElement).addClass(CLASS_NAME_ACTIVE)
494

495
      this._isSliding = false
496
      $(this._element).trigger(slidEvent)
497
    }
498

499
    if (isCycling) {
500
      this.cycle()
501
    }
502
  }
503

504
  // Static
505
  static _jQueryInterface(config) {
506
    return this.each(function () {
507
      let data = $(this).data(DATA_KEY)
508
      let _config = {
509
        ...Default,
510
        ...$(this).data()
511
      }
512

513
      if (typeof config === 'object') {
514
        _config = {
515
          ..._config,
516
          ...config
517
        }
518
      }
519

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      const action = typeof config === 'string' ? config : _config.slide
521

522
      if (!data) {
523
        data = new Carousel(this, _config)
524
        $(this).data(DATA_KEY, data)
525
      }
526

527
      if (typeof config === 'number') {
528
        data.to(config)
529
      } else if (typeof action === 'string') {
530
        if (typeof data[action] === 'undefined') {
531
          throw new TypeError(`No method named "${action}"`)
532
        }
533

534
        data[action]()
535
      } else if (_config.interval && _config.ride) {
536
        data.pause()
537
        data.cycle()
538
      }
539
    })
540
  }
541

542
  static _dataApiClickHandler(event) {
543
    const selector = Util.getSelectorFromElement(this)
544

545
    if (!selector) {
546
      return
547
    }
548

549
    const target = $(selector)[0]
550

551
    if (!target || !$(target).hasClass(CLASS_NAME_CAROUSEL)) {
552
      return
553
    }
554

555
    const config = {
556
      ...$(target).data(),
557
      ...$(this).data()
558
    }
559
    const slideIndex = this.getAttribute('data-slide-to')
560

561
    if (slideIndex) {
562
      config.interval = false
563
    }
564

565
    Carousel._jQueryInterface.call($(target), config)
566

567
    if (slideIndex) {
568
      $(target).data(DATA_KEY).to(slideIndex)
569
    }
570

571
    event.preventDefault()
572
  }
573
}
574

575
/**
576
 * Data API implementation
577
 */
578

579
$(document).on(EVENT_CLICK_DATA_API, SELECTOR_DATA_SLIDE, Carousel._dataApiClickHandler)
580

581
$(window).on(EVENT_LOAD_DATA_API, () => {
582
  const carousels = [].slice.call(document.querySelectorAll(SELECTOR_DATA_RIDE))
583
  for (let i = 0, len = carousels.length; i < len; i++) {
584
    const $carousel = $(carousels[i])
585
    Carousel._jQueryInterface.call($carousel, $carousel.data())
586
  }
587
})
588

589
/**
590
 * jQuery
591
 */
592

593
$.fn[NAME] = Carousel._jQueryInterface
594
$.fn[NAME].Constructor = Carousel
595
$.fn[NAME].noConflict = () => {
596
  $.fn[NAME] = JQUERY_NO_CONFLICT
597
  return Carousel._jQueryInterface
598
}
599

600
export default Carousel
601