js/src/modal.js - external/github.com/twbs/bootstrap - Git at Google

 /**
  * --------------------------------------------------------------------------
  * Bootstrap (v4.6.2): modal.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
  * --------------------------------------------------------------------------
  */

 import $ from 'jquery'
 import Util from './util'

 /**
  * Constants
  */

 const NAME = 'modal'
 const VERSION = '4.6.2'
 const DATA_KEY = 'bs.modal'
 const EVENT_KEY = `.${DATA_KEY}`
 const DATA_API_KEY = '.data-api'
 const JQUERY_NO_CONFLICT = $.fn[NAME]
 const ESCAPE_KEYCODE = 27 // KeyboardEvent.which value for Escape (Esc) key

 const CLASS_NAME_SCROLLABLE = 'modal-dialog-scrollable'
 const CLASS_NAME_SCROLLBAR_MEASURER = 'modal-scrollbar-measure'
 const CLASS_NAME_BACKDROP = 'modal-backdrop'
 const CLASS_NAME_OPEN = 'modal-open'
 const CLASS_NAME_FADE = 'fade'
 const CLASS_NAME_SHOW = 'show'
 const CLASS_NAME_STATIC = 'modal-static'

 const EVENT_HIDE = `hide${EVENT_KEY}`
 const EVENT_HIDE_PREVENTED = `hidePrevented${EVENT_KEY}`
 const EVENT_HIDDEN = `hidden${EVENT_KEY}`
 const EVENT_SHOW = `show${EVENT_KEY}`
 const EVENT_SHOWN = `shown${EVENT_KEY}`
 const EVENT_FOCUSIN = `focusin${EVENT_KEY}`
 const EVENT_RESIZE = `resize${EVENT_KEY}`
 const EVENT_CLICK_DISMISS = `click.dismiss${EVENT_KEY}`
 const EVENT_KEYDOWN_DISMISS = `keydown.dismiss${EVENT_KEY}`
 const EVENT_MOUSEUP_DISMISS = `mouseup.dismiss${EVENT_KEY}`
 const EVENT_MOUSEDOWN_DISMISS = `mousedown.dismiss${EVENT_KEY}`
 const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`

 const SELECTOR_DIALOG = '.modal-dialog'
 const SELECTOR_MODAL_BODY = '.modal-body'
 const SELECTOR_DATA_TOGGLE = '[data-toggle="modal"]'
 const SELECTOR_DATA_DISMISS = '[data-dismiss="modal"]'
 const SELECTOR_FIXED_CONTENT = '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top'
 const SELECTOR_STICKY_CONTENT = '.sticky-top'

 const Default = {
   backdrop: true,
   keyboard: true,
   focus: true,
   show: true
 }

 const DefaultType = {
   backdrop: '(boolean|string)',
   keyboard: 'boolean',
   focus: 'boolean',
   show: 'boolean'
 }

 /**
  * Class definition
  */

 class Modal {
   constructor(element, config) {
     this._config = this._getConfig(config)
     this._element = element
     this._dialog = element.querySelector(SELECTOR_DIALOG)
     this._backdrop = null
     this._isShown = false
     this._isBodyOverflowing = false
     this._ignoreBackdropClick = false
     this._isTransitioning = false
     this._scrollbarWidth = 0
   }

   // Getters
   static get VERSION() {
     return VERSION
   }

   static get Default() {
     return Default
   }

   // Public
   toggle(relatedTarget) {
     return this._isShown ? this.hide() : this.show(relatedTarget)
   }

   show(relatedTarget) {
     if (this._isShown || this._isTransitioning) {
       return
     }

     const showEvent = $.Event(EVENT_SHOW, {
       relatedTarget
     })

     $(this._element).trigger(showEvent)

     if (showEvent.isDefaultPrevented()) {
       return
     }

     this._isShown = true

     if ($(this._element).hasClass(CLASS_NAME_FADE)) {
       this._isTransitioning = true
     }

     this._checkScrollbar()
     this._setScrollbar()

     this._adjustDialog()

     this._setEscapeEvent()
     this._setResizeEvent()

     $(this._element).on(
       EVENT_CLICK_DISMISS,
       SELECTOR_DATA_DISMISS,
       event => this.hide(event)
     )

     $(this._dialog).on(EVENT_MOUSEDOWN_DISMISS, () => {
       $(this._element).one(EVENT_MOUSEUP_DISMISS, event => {
         if ($(event.target).is(this._element)) {
           this._ignoreBackdropClick = true
         }
       })
     })

     this._showBackdrop(() => this._showElement(relatedTarget))
   }

   hide(event) {
     if (event) {
       event.preventDefault()
     }

     if (!this._isShown || this._isTransitioning) {
       return
     }

     const hideEvent = $.Event(EVENT_HIDE)

     $(this._element).trigger(hideEvent)

     if (!this._isShown || hideEvent.isDefaultPrevented()) {
       return
     }

     this._isShown = false
     const transition = $(this._element).hasClass(CLASS_NAME_FADE)

     if (transition) {
       this._isTransitioning = true
     }

     this._setEscapeEvent()
     this._setResizeEvent()

     $(document).off(EVENT_FOCUSIN)

     $(this._element).removeClass(CLASS_NAME_SHOW)

     $(this._element).off(EVENT_CLICK_DISMISS)
     $(this._dialog).off(EVENT_MOUSEDOWN_DISMISS)

     if (transition) {
       const transitionDuration = Util.getTransitionDurationFromElement(this._element)

       $(this._element)
         .one(Util.TRANSITION_END, event => this._hideModal(event))
         .emulateTransitionEnd(transitionDuration)
     } else {
       this._hideModal()
     }
   }

   dispose() {
     [window, this._element, this._dialog]
       .forEach(htmlElement => $(htmlElement).off(EVENT_KEY))

     /**
      * `document` has 2 events `EVENT_FOCUSIN` and `EVENT_CLICK_DATA_API`
      * Do not move `document` in `htmlElements` array
      * It will remove `EVENT_CLICK_DATA_API` event that should remain
      */
     $(document).off(EVENT_FOCUSIN)

     $.removeData(this._element, DATA_KEY)

     this._config = null
     this._element = null
     this._dialog = null
     this._backdrop = null
     this._isShown = null
     this._isBodyOverflowing = null
     this._ignoreBackdropClick = null
     this._isTransitioning = null
     this._scrollbarWidth = null
   }

   handleUpdate() {
     this._adjustDialog()
   }

   // Private
   _getConfig(config) {
     config = {
       ...Default,
       ...config
     }
     Util.typeCheckConfig(NAME, config, DefaultType)
     return config
   }

   _triggerBackdropTransition() {
     const hideEventPrevented = $.Event(EVENT_HIDE_PREVENTED)

     $(this._element).trigger(hideEventPrevented)
     if (hideEventPrevented.isDefaultPrevented()) {
       return
     }

     const isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight

     if (!isModalOverflowing) {
       this._element.style.overflowY = 'hidden'
     }

     this._element.classList.add(CLASS_NAME_STATIC)

     const modalTransitionDuration = Util.getTransitionDurationFromElement(this._dialog)
     $(this._element).off(Util.TRANSITION_END)

     $(this._element).one(Util.TRANSITION_END, () => {
       this._element.classList.remove(CLASS_NAME_STATIC)
       if (!isModalOverflowing) {
         $(this._element).one(Util.TRANSITION_END, () => {
           this._element.style.overflowY = ''
         })
           .emulateTransitionEnd(this._element, modalTransitionDuration)
       }
     })
       .emulateTransitionEnd(modalTransitionDuration)
     this._element.focus()
   }

   _showElement(relatedTarget) {
     const transition = $(this._element).hasClass(CLASS_NAME_FADE)
     const modalBody = this._dialog ? this._dialog.querySelector(SELECTOR_MODAL_BODY) : null

     if (!this._element.parentNode ||
         this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {
       // Don't move modal's DOM position
       document.body.appendChild(this._element)
     }

     this._element.style.display = 'block'
     this._element.removeAttribute('aria-hidden')
     this._element.setAttribute('aria-modal', true)
     this._element.setAttribute('role', 'dialog')

     if ($(this._dialog).hasClass(CLASS_NAME_SCROLLABLE) && modalBody) {
       modalBody.scrollTop = 0
     } else {
       this._element.scrollTop = 0
     }

     if (transition) {
       Util.reflow(this._element)
     }

     $(this._element).addClass(CLASS_NAME_SHOW)

     if (this._config.focus) {
       this._enforceFocus()
     }

     const shownEvent = $.Event(EVENT_SHOWN, {
       relatedTarget
     })

     const transitionComplete = () => {
       if (this._config.focus) {
         this._element.focus()
       }

       this._isTransitioning = false
       $(this._element).trigger(shownEvent)
     }

     if (transition) {
       const transitionDuration = Util.getTransitionDurationFromElement(this._dialog)

       $(this._dialog)
         .one(Util.TRANSITION_END, transitionComplete)
         .emulateTransitionEnd(transitionDuration)
     } else {
       transitionComplete()
     }
   }

   _enforceFocus() {
     $(document)
       .off(EVENT_FOCUSIN) // Guard against infinite focus loop
       .on(EVENT_FOCUSIN, event => {
         if (document !== event.target &&
             this._element !== event.target &&
             $(this._element).has(event.target).length === 0) {
           this._element.focus()
         }
       })
   }

   _setEscapeEvent() {
     if (this._isShown) {
       $(this._element).on(EVENT_KEYDOWN_DISMISS, event => {
         if (this._config.keyboard && event.which === ESCAPE_KEYCODE) {
           event.preventDefault()
           this.hide()
         } else if (!this._config.keyboard && event.which === ESCAPE_KEYCODE) {
           this._triggerBackdropTransition()
         }
       })
     } else if (!this._isShown) {
       $(this._element).off(EVENT_KEYDOWN_DISMISS)
     }
   }

   _setResizeEvent() {
     if (this._isShown) {
       $(window).on(EVENT_RESIZE, event => this.handleUpdate(event))
     } else {
       $(window).off(EVENT_RESIZE)
     }
   }

   _hideModal() {
     this._element.style.display = 'none'
     this._element.setAttribute('aria-hidden', true)
     this._element.removeAttribute('aria-modal')
     this._element.removeAttribute('role')
     this._isTransitioning = false
     this._showBackdrop(() => {
       $(document.body).removeClass(CLASS_NAME_OPEN)
       this._resetAdjustments()
       this._resetScrollbar()
       $(this._element).trigger(EVENT_HIDDEN)
     })
   }

   _removeBackdrop() {
     if (this._backdrop) {
       $(this._backdrop).remove()
       this._backdrop = null
     }
   }

   _showBackdrop(callback) {
     const animate = $(this._element).hasClass(CLASS_NAME_FADE) ?
       CLASS_NAME_FADE : ''

     if (this._isShown && this._config.backdrop) {
       this._backdrop = document.createElement('div')
       this._backdrop.className = CLASS_NAME_BACKDROP

       if (animate) {
         this._backdrop.classList.add(animate)
       }

       $(this._backdrop).appendTo(document.body)

       $(this._element).on(EVENT_CLICK_DISMISS, event => {
         if (this._ignoreBackdropClick) {
           this._ignoreBackdropClick = false
           return
         }

         if (event.target !== event.currentTarget) {
           return
         }

         if (this._config.backdrop === 'static') {
           this._triggerBackdropTransition()
         } else {
           this.hide()
         }
       })

       if (animate) {
         Util.reflow(this._backdrop)
       }

       $(this._backdrop).addClass(CLASS_NAME_SHOW)

       if (!callback) {
         return
       }

       if (!animate) {
         callback()
         return
       }

       const backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop)

       $(this._backdrop)
         .one(Util.TRANSITION_END, callback)
         .emulateTransitionEnd(backdropTransitionDuration)
     } else if (!this._isShown && this._backdrop) {
       $(this._backdrop).removeClass(CLASS_NAME_SHOW)

       const callbackRemove = () => {
         this._removeBackdrop()
         if (callback) {
           callback()
         }
       }

       if ($(this._element).hasClass(CLASS_NAME_FADE)) {
         const backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop)

         $(this._backdrop)
           .one(Util.TRANSITION_END, callbackRemove)
           .emulateTransitionEnd(backdropTransitionDuration)
       } else {
         callbackRemove()
       }
     } else if (callback) {
       callback()
     }
   }

   // ----------------------------------------------------------------------
   // the following methods are used to handle overflowing modals
   // todo (fat): these should probably be refactored out of modal.js
   // ----------------------------------------------------------------------

   _adjustDialog() {
     const isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight

     if (!this._isBodyOverflowing && isModalOverflowing) {
       this._element.style.paddingLeft = `${this._scrollbarWidth}px`
     }

     if (this._isBodyOverflowing && !isModalOverflowing) {
       this._element.style.paddingRight = `${this._scrollbarWidth}px`
     }
   }

   _resetAdjustments() {
     this._element.style.paddingLeft = ''
     this._element.style.paddingRight = ''
   }

   _checkScrollbar() {
     const rect = document.body.getBoundingClientRect()
     this._isBodyOverflowing = Math.round(rect.left + rect.right) < window.innerWidth
     this._scrollbarWidth = this._getScrollbarWidth()
   }

   _setScrollbar() {
     if (this._isBodyOverflowing) {
       // Note: DOMNode.style.paddingRight returns the actual value or '' if not set
       //   while $(DOMNode).css('padding-right') returns the calculated value or 0 if not set
       const fixedContent = [].slice.call(document.querySelectorAll(SELECTOR_FIXED_CONTENT))
       const stickyContent = [].slice.call(document.querySelectorAll(SELECTOR_STICKY_CONTENT))

       // Adjust fixed content padding
       $(fixedContent).each((index, element) => {
         const actualPadding = element.style.paddingRight
         const calculatedPadding = $(element).css('padding-right')
         $(element)
           .data('padding-right', actualPadding)
           .css('padding-right', `${parseFloat(calculatedPadding) + this._scrollbarWidth}px`)
       })

       // Adjust sticky content margin
       $(stickyContent).each((index, element) => {
         const actualMargin = element.style.marginRight
         const calculatedMargin = $(element).css('margin-right')
         $(element)
           .data('margin-right', actualMargin)
           .css('margin-right', `${parseFloat(calculatedMargin) - this._scrollbarWidth}px`)
       })

       // Adjust body padding
       const actualPadding = document.body.style.paddingRight
       const calculatedPadding = $(document.body).css('padding-right')
       $(document.body)
         .data('padding-right', actualPadding)
         .css('padding-right', `${parseFloat(calculatedPadding) + this._scrollbarWidth}px`)
     }

     $(document.body).addClass(CLASS_NAME_OPEN)
   }

   _resetScrollbar() {
     // Restore fixed content padding
     const fixedContent = [].slice.call(document.querySelectorAll(SELECTOR_FIXED_CONTENT))
     $(fixedContent).each((index, element) => {
       const padding = $(element).data('padding-right')
       $(element).removeData('padding-right')
       element.style.paddingRight = padding ? padding : ''
     })

     // Restore sticky content
     const elements = [].slice.call(document.querySelectorAll(`${SELECTOR_STICKY_CONTENT}`))
     $(elements).each((index, element) => {
       const margin = $(element).data('margin-right')
       if (typeof margin !== 'undefined') {
         $(element).css('margin-right', margin).removeData('margin-right')
       }
     })

     // Restore body padding
     const padding = $(document.body).data('padding-right')
     $(document.body).removeData('padding-right')
     document.body.style.paddingRight = padding ? padding : ''
   }

   _getScrollbarWidth() { // thx d.walsh
     const scrollDiv = document.createElement('div')
     scrollDiv.className = CLASS_NAME_SCROLLBAR_MEASURER
     document.body.appendChild(scrollDiv)
     const scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth
     document.body.removeChild(scrollDiv)
     return scrollbarWidth
   }

   // Static
   static _jQueryInterface(config, relatedTarget) {
     return this.each(function () {
       let data = $(this).data(DATA_KEY)
       const _config = {
         ...Default,
         ...$(this).data(),
         ...(typeof config === 'object' && config ? config : {})
       }

       if (!data) {
         data = new Modal(this, _config)
         $(this).data(DATA_KEY, data)
       }

       if (typeof config === 'string') {
         if (typeof data[config] === 'undefined') {
           throw new TypeError(`No method named "${config}"`)
         }

         data[config](relatedTarget)
       } else if (_config.show) {
         data.show(relatedTarget)
       }
     })
   }
 }

 /**
  * Data API implementation
  */

 $(document).on(EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, function (event) {
   let target
   const selector = Util.getSelectorFromElement(this)

   if (selector) {
     target = document.querySelector(selector)
   }

   const config = $(target).data(DATA_KEY) ?
     'toggle' : {
       ...$(target).data(),
       ...$(this).data()
     }

   if (this.tagName === 'A' || this.tagName === 'AREA') {
     event.preventDefault()
   }

   const $target = $(target).one(EVENT_SHOW, showEvent => {
     if (showEvent.isDefaultPrevented()) {
       // Only register focus restorer if modal will actually get shown
       return
     }

     $target.one(EVENT_HIDDEN, () => {
       if ($(this).is(':visible')) {
         this.focus()
       }
     })
   })

   Modal._jQueryInterface.call($(target), config, this)
 })

 /**
  * jQuery
  */

 $.fn[NAME] = Modal._jQueryInterface
 $.fn[NAME].Constructor = Modal
 $.fn[NAME].noConflict = () => {
   $.fn[NAME] = JQUERY_NO_CONFLICT
   return Modal._jQueryInterface
 }

 export default Modal
	/**
	* --------------------------------------------------------------------------
	* Bootstrap (v4.6.2): modal.js
	* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
	* --------------------------------------------------------------------------
	*/

	import $ from 'jquery'
	import Util from './util'

	/**
	* Constants
	*/

	const NAME = 'modal'
	const VERSION = '4.6.2'
	const DATA_KEY = 'bs.modal'
	const EVENT_KEY = `.${DATA_KEY}`
	const DATA_API_KEY = '.data-api'
	const JQUERY_NO_CONFLICT = $.fn[NAME]
	const ESCAPE_KEYCODE = 27 // KeyboardEvent.which value for Escape (Esc) key

	const CLASS_NAME_SCROLLABLE = 'modal-dialog-scrollable'
	const CLASS_NAME_SCROLLBAR_MEASURER = 'modal-scrollbar-measure'
	const CLASS_NAME_BACKDROP = 'modal-backdrop'
	const CLASS_NAME_OPEN = 'modal-open'
	const CLASS_NAME_FADE = 'fade'
	const CLASS_NAME_SHOW = 'show'
	const CLASS_NAME_STATIC = 'modal-static'

	const EVENT_HIDE = `hide${EVENT_KEY}`
	const EVENT_HIDE_PREVENTED = `hidePrevented${EVENT_KEY}`
	const EVENT_HIDDEN = `hidden${EVENT_KEY}`
	const EVENT_SHOW = `show${EVENT_KEY}`
	const EVENT_SHOWN = `shown${EVENT_KEY}`
	const EVENT_FOCUSIN = `focusin${EVENT_KEY}`
	const EVENT_RESIZE = `resize${EVENT_KEY}`
	const EVENT_CLICK_DISMISS = `click.dismiss${EVENT_KEY}`
	const EVENT_KEYDOWN_DISMISS = `keydown.dismiss${EVENT_KEY}`
	const EVENT_MOUSEUP_DISMISS = `mouseup.dismiss${EVENT_KEY}`
	const EVENT_MOUSEDOWN_DISMISS = `mousedown.dismiss${EVENT_KEY}`
	const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`

	const SELECTOR_DIALOG = '.modal-dialog'
	const SELECTOR_MODAL_BODY = '.modal-body'
	const SELECTOR_DATA_TOGGLE = '[data-toggle="modal"]'
	const SELECTOR_DATA_DISMISS = '[data-dismiss="modal"]'
	const SELECTOR_FIXED_CONTENT = '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top'
	const SELECTOR_STICKY_CONTENT = '.sticky-top'

	const Default = {
	backdrop: true,
	keyboard: true,
	focus: true,
	show: true
	}

	const DefaultType = {
	backdrop: '(boolean\|string)',
	keyboard: 'boolean',
	focus: 'boolean',
	show: 'boolean'
	}

	/**
	* Class definition
	*/

	class Modal {
	constructor(element, config) {
	this._config = this._getConfig(config)
	this._element = element
	this._dialog = element.querySelector(SELECTOR_DIALOG)
	this._backdrop = null
	this._isShown = false
	this._isBodyOverflowing = false
	this._ignoreBackdropClick = false
	this._isTransitioning = false
	this._scrollbarWidth = 0
	}

	// Getters
	static get VERSION() {
	return VERSION
	}

	static get Default() {
	return Default
	}

	// Public
	toggle(relatedTarget) {
	return this._isShown ? this.hide() : this.show(relatedTarget)
	}

	show(relatedTarget) {
	if (this._isShown \|\| this._isTransitioning) {
	return
	}

	const showEvent = $.Event(EVENT_SHOW, {
	relatedTarget
	})

	$(this._element).trigger(showEvent)

	if (showEvent.isDefaultPrevented()) {
	return
	}

	this._isShown = true

	if ($(this._element).hasClass(CLASS_NAME_FADE)) {
	this._isTransitioning = true
	}

	this._checkScrollbar()
	this._setScrollbar()

	this._adjustDialog()

	this._setEscapeEvent()
	this._setResizeEvent()

	$(this._element).on(
	EVENT_CLICK_DISMISS,
	SELECTOR_DATA_DISMISS,
	event => this.hide(event)
	)

	$(this._dialog).on(EVENT_MOUSEDOWN_DISMISS, () => {
	$(this._element).one(EVENT_MOUSEUP_DISMISS, event => {
	if ($(event.target).is(this._element)) {
	this._ignoreBackdropClick = true
	}
	})
	})

	this._showBackdrop(() => this._showElement(relatedTarget))
	}

	hide(event) {
	if (event) {
	event.preventDefault()
	}

	if (!this._isShown \|\| this._isTransitioning) {
	return
	}

	const hideEvent = $.Event(EVENT_HIDE)

	$(this._element).trigger(hideEvent)

	if (!this._isShown \|\| hideEvent.isDefaultPrevented()) {
	return
	}

	this._isShown = false
	const transition = $(this._element).hasClass(CLASS_NAME_FADE)

	if (transition) {
	this._isTransitioning = true
	}

	this._setEscapeEvent()
	this._setResizeEvent()

	$(document).off(EVENT_FOCUSIN)

	$(this._element).removeClass(CLASS_NAME_SHOW)

	$(this._element).off(EVENT_CLICK_DISMISS)
	$(this._dialog).off(EVENT_MOUSEDOWN_DISMISS)

	if (transition) {
	const transitionDuration = Util.getTransitionDurationFromElement(this._element)

	$(this._element)
	.one(Util.TRANSITION_END, event => this._hideModal(event))
	.emulateTransitionEnd(transitionDuration)
	} else {
	this._hideModal()
	}
	}

	dispose() {
	[window, this._element, this._dialog]
	.forEach(htmlElement => $(htmlElement).off(EVENT_KEY))

	/**
	* `document` has 2 events `EVENT_FOCUSIN` and `EVENT_CLICK_DATA_API`
	* Do not move `document` in `htmlElements` array
	* It will remove `EVENT_CLICK_DATA_API` event that should remain
	*/
	$(document).off(EVENT_FOCUSIN)

	$.removeData(this._element, DATA_KEY)

	this._config = null
	this._element = null
	this._dialog = null
	this._backdrop = null
	this._isShown = null
	this._isBodyOverflowing = null
	this._ignoreBackdropClick = null
	this._isTransitioning = null
	this._scrollbarWidth = null
	}

	handleUpdate() {
	this._adjustDialog()
	}

	// Private
	_getConfig(config) {
	config = {
	...Default,
	...config
	}
	Util.typeCheckConfig(NAME, config, DefaultType)
	return config
	}

	_triggerBackdropTransition() {
	const hideEventPrevented = $.Event(EVENT_HIDE_PREVENTED)

	$(this._element).trigger(hideEventPrevented)
	if (hideEventPrevented.isDefaultPrevented()) {
	return
	}

	const isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight

	if (!isModalOverflowing) {
	this._element.style.overflowY = 'hidden'
	}

	this._element.classList.add(CLASS_NAME_STATIC)

	const modalTransitionDuration = Util.getTransitionDurationFromElement(this._dialog)
	$(this._element).off(Util.TRANSITION_END)

	$(this._element).one(Util.TRANSITION_END, () => {
	this._element.classList.remove(CLASS_NAME_STATIC)
	if (!isModalOverflowing) {
	$(this._element).one(Util.TRANSITION_END, () => {
	this._element.style.overflowY = ''
	})
	.emulateTransitionEnd(this._element, modalTransitionDuration)
	}
	})
	.emulateTransitionEnd(modalTransitionDuration)
	this._element.focus()
	}

	_showElement(relatedTarget) {
	const transition = $(this._element).hasClass(CLASS_NAME_FADE)
	const modalBody = this._dialog ? this._dialog.querySelector(SELECTOR_MODAL_BODY) : null

	if (!this._element.parentNode \|\|
	this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {
	// Don't move modal's DOM position
	document.body.appendChild(this._element)
	}

	this._element.style.display = 'block'
	this._element.removeAttribute('aria-hidden')
	this._element.setAttribute('aria-modal', true)
	this._element.setAttribute('role', 'dialog')

	if ($(this._dialog).hasClass(CLASS_NAME_SCROLLABLE) && modalBody) {
	modalBody.scrollTop = 0
	} else {
	this._element.scrollTop = 0
	}

	if (transition) {
	Util.reflow(this._element)
	}

	$(this._element).addClass(CLASS_NAME_SHOW)

	if (this._config.focus) {
	this._enforceFocus()
	}

	const shownEvent = $.Event(EVENT_SHOWN, {
	relatedTarget
	})

	const transitionComplete = () => {
	if (this._config.focus) {
	this._element.focus()
	}

	this._isTransitioning = false
	$(this._element).trigger(shownEvent)
	}

	if (transition) {
	const transitionDuration = Util.getTransitionDurationFromElement(this._dialog)

	$(this._dialog)
	.one(Util.TRANSITION_END, transitionComplete)
	.emulateTransitionEnd(transitionDuration)
	} else {
	transitionComplete()
	}
	}

	_enforceFocus() {
	$(document)
	.off(EVENT_FOCUSIN) // Guard against infinite focus loop
	.on(EVENT_FOCUSIN, event => {
	if (document !== event.target &&
	this._element !== event.target &&
	$(this._element).has(event.target).length === 0) {
	this._element.focus()
	}
	})
	}

	_setEscapeEvent() {
	if (this._isShown) {
	$(this._element).on(EVENT_KEYDOWN_DISMISS, event => {
	if (this._config.keyboard && event.which === ESCAPE_KEYCODE) {
	event.preventDefault()
	this.hide()
	} else if (!this._config.keyboard && event.which === ESCAPE_KEYCODE) {
	this._triggerBackdropTransition()
	}
	})
	} else if (!this._isShown) {
	$(this._element).off(EVENT_KEYDOWN_DISMISS)
	}
	}

	_setResizeEvent() {
	if (this._isShown) {
	$(window).on(EVENT_RESIZE, event => this.handleUpdate(event))
	} else {
	$(window).off(EVENT_RESIZE)
	}
	}

	_hideModal() {
	this._element.style.display = 'none'
	this._element.setAttribute('aria-hidden', true)
	this._element.removeAttribute('aria-modal')
	this._element.removeAttribute('role')
	this._isTransitioning = false
	this._showBackdrop(() => {
	$(document.body).removeClass(CLASS_NAME_OPEN)
	this._resetAdjustments()
	this._resetScrollbar()
	$(this._element).trigger(EVENT_HIDDEN)
	})
	}

	_removeBackdrop() {
	if (this._backdrop) {
	$(this._backdrop).remove()
	this._backdrop = null
	}
	}

	_showBackdrop(callback) {
	const animate = $(this._element).hasClass(CLASS_NAME_FADE) ?
	CLASS_NAME_FADE : ''

	if (this._isShown && this._config.backdrop) {
	this._backdrop = document.createElement('div')
	this._backdrop.className = CLASS_NAME_BACKDROP

	if (animate) {
	this._backdrop.classList.add(animate)
	}

	$(this._backdrop).appendTo(document.body)

	$(this._element).on(EVENT_CLICK_DISMISS, event => {
	if (this._ignoreBackdropClick) {
	this._ignoreBackdropClick = false
	return
	}

	if (event.target !== event.currentTarget) {
	return
	}

	if (this._config.backdrop === 'static') {
	this._triggerBackdropTransition()
	} else {
	this.hide()
	}
	})

	if (animate) {
	Util.reflow(this._backdrop)
	}

	$(this._backdrop).addClass(CLASS_NAME_SHOW)

	if (!callback) {
	return
	}

	if (!animate) {
	callback()
	return
	}

	const backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop)

	$(this._backdrop)
	.one(Util.TRANSITION_END, callback)
	.emulateTransitionEnd(backdropTransitionDuration)
	} else if (!this._isShown && this._backdrop) {
	$(this._backdrop).removeClass(CLASS_NAME_SHOW)

	const callbackRemove = () => {
	this._removeBackdrop()
	if (callback) {
	callback()
	}
	}

	if ($(this._element).hasClass(CLASS_NAME_FADE)) {
	const backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop)

	$(this._backdrop)
	.one(Util.TRANSITION_END, callbackRemove)
	.emulateTransitionEnd(backdropTransitionDuration)
	} else {
	callbackRemove()
	}
	} else if (callback) {
	callback()
	}
	}

	// ----------------------------------------------------------------------
	// the following methods are used to handle overflowing modals
	// todo (fat): these should probably be refactored out of modal.js
	// ----------------------------------------------------------------------

	_adjustDialog() {
	const isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight

	if (!this._isBodyOverflowing && isModalOverflowing) {
	this._element.style.paddingLeft = `${this._scrollbarWidth}px`
	}

	if (this._isBodyOverflowing && !isModalOverflowing) {
	this._element.style.paddingRight = `${this._scrollbarWidth}px`
	}
	}

	_resetAdjustments() {
	this._element.style.paddingLeft = ''
	this._element.style.paddingRight = ''
	}

	_checkScrollbar() {
	const rect = document.body.getBoundingClientRect()
	this._isBodyOverflowing = Math.round(rect.left + rect.right) < window.innerWidth
	this._scrollbarWidth = this._getScrollbarWidth()
	}

	_setScrollbar() {
	if (this._isBodyOverflowing) {
	// Note: DOMNode.style.paddingRight returns the actual value or '' if not set
	// while $(DOMNode).css('padding-right') returns the calculated value or 0 if not set
	const fixedContent = [].slice.call(document.querySelectorAll(SELECTOR_FIXED_CONTENT))
	const stickyContent = [].slice.call(document.querySelectorAll(SELECTOR_STICKY_CONTENT))

	// Adjust fixed content padding
	$(fixedContent).each((index, element) => {
	const actualPadding = element.style.paddingRight
	const calculatedPadding = $(element).css('padding-right')
	$(element)
	.data('padding-right', actualPadding)
	.css('padding-right', `${parseFloat(calculatedPadding) + this._scrollbarWidth}px`)
	})

	// Adjust sticky content margin
	$(stickyContent).each((index, element) => {
	const actualMargin = element.style.marginRight
	const calculatedMargin = $(element).css('margin-right')
	$(element)
	.data('margin-right', actualMargin)
	.css('margin-right', `${parseFloat(calculatedMargin) - this._scrollbarWidth}px`)
	})

	// Adjust body padding
	const actualPadding = document.body.style.paddingRight
	const calculatedPadding = $(document.body).css('padding-right')
	$(document.body)
	.data('padding-right', actualPadding)
	.css('padding-right', `${parseFloat(calculatedPadding) + this._scrollbarWidth}px`)
	}

	$(document.body).addClass(CLASS_NAME_OPEN)
	}

	_resetScrollbar() {
	// Restore fixed content padding
	const fixedContent = [].slice.call(document.querySelectorAll(SELECTOR_FIXED_CONTENT))
	$(fixedContent).each((index, element) => {
	const padding = $(element).data('padding-right')
	$(element).removeData('padding-right')
	element.style.paddingRight = padding ? padding : ''
	})

	// Restore sticky content
	const elements = [].slice.call(document.querySelectorAll(`${SELECTOR_STICKY_CONTENT}`))
	$(elements).each((index, element) => {
	const margin = $(element).data('margin-right')
	if (typeof margin !== 'undefined') {
	$(element).css('margin-right', margin).removeData('margin-right')
	}
	})

	// Restore body padding
	const padding = $(document.body).data('padding-right')
	$(document.body).removeData('padding-right')
	document.body.style.paddingRight = padding ? padding : ''
	}

	_getScrollbarWidth() { // thx d.walsh
	const scrollDiv = document.createElement('div')
	scrollDiv.className = CLASS_NAME_SCROLLBAR_MEASURER
	document.body.appendChild(scrollDiv)
	const scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth
	document.body.removeChild(scrollDiv)
	return scrollbarWidth
	}

	// Static
	static _jQueryInterface(config, relatedTarget) {
	return this.each(function () {
	let data = $(this).data(DATA_KEY)
	const _config = {
	...Default,
	...$(this).data(),
	...(typeof config === 'object' && config ? config : {})
	}

	if (!data) {
	data = new Modal(this, _config)
	$(this).data(DATA_KEY, data)
	}

	if (typeof config === 'string') {
	if (typeof data[config] === 'undefined') {
	throw new TypeError(`No method named "${config}"`)
	}

	data[config](relatedTarget)
	} else if (_config.show) {
	data.show(relatedTarget)
	}
	})
	}
	}

	/**
	* Data API implementation
	*/

	$(document).on(EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, function (event) {
	let target
	const selector = Util.getSelectorFromElement(this)

	if (selector) {
	target = document.querySelector(selector)
	}

	const config = $(target).data(DATA_KEY) ?
	'toggle' : {
	...$(target).data(),
	...$(this).data()
	}

	if (this.tagName === 'A' \|\| this.tagName === 'AREA') {
	event.preventDefault()
	}

	const $target = $(target).one(EVENT_SHOW, showEvent => {
	if (showEvent.isDefaultPrevented()) {
	// Only register focus restorer if modal will actually get shown
	return
	}

	$target.one(EVENT_HIDDEN, () => {
	if ($(this).is(':visible')) {
	this.focus()
	}
	})
	})

	Modal._jQueryInterface.call($(target), config, this)
	})

	/**
	* jQuery
	*/

	$.fn[NAME] = Modal._jQueryInterface
	$.fn[NAME].Constructor = Modal
	$.fn[NAME].noConflict = () => {
	$.fn[NAME] = JQUERY_NO_CONFLICT
	return Modal._jQueryInterface
	}

	export default Modal