carousel.js

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

import Data from './dom/data'
import EventHandler from './dom/eventHandler'
import Manipulator from './dom/manipulator'
import SelectorEngine from './dom/selectorEngine'
import Util from './util'

/**
 * ------------------------------------------------------------------------
 * Constants
 * ------------------------------------------------------------------------
 */

const NAME                   = 'carousel'
const VERSION                = '4.3.1'
const DATA_KEY               = 'bs.carousel'
const EVENT_KEY              = `.${DATA_KEY}`
const DATA_API_KEY           = '.data-api'
const ARROW_LEFT_KEYCODE     = 37 // KeyboardEvent.which value for left arrow key
const ARROW_RIGHT_KEYCODE    = 39 // KeyboardEvent.which value for right arrow key
const TOUCHEVENT_COMPAT_WAIT = 500 // Time for mouse compat events to fire after touch
const SWIPE_THRESHOLD        = 40

const Default = {
  interval : 5000,
  keyboard : true,
  slide    : false,
  pause    : 'hover',
  wrap     : true,
  touch    : true
}

const DefaultType = {
  interval : '(number|boolean)',
  keyboard : 'boolean',
  slide    : '(boolean|string)',
  pause    : '(string|boolean)',
  wrap     : 'boolean',
  touch    : 'boolean'
}

const Direction = {
  NEXT     : 'next',
  PREV     : 'prev',
  LEFT     : 'left',
  RIGHT    : 'right'
}

const 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}`
}