# All files / src modal.js

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88.89% Branches 112/126
95.83% Functions 46/48
96.85% Lines 277/286

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     /**
     * --------------------------------------------------------------------------
     * CoreUI (v3.3.0): modal.js
     * Licensed under MIT (https://coreui.io/license)
     *
     * This component is a modified version of the Bootstrap's modal.js
     * Bootstrap (v5.0.0): modal.js
     * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
     * --------------------------------------------------------------------------
     */

    import {
      getjQuery,
      TRANSITION_END,
      emulateTransitionEnd,
      getElementFromSelector,
      getTransitionDurationFromElement,
      isVisible,
      reflow,
      typeCheckConfig
    } from './util/index'
    import Data from './dom/data'
    import EventHandler from './dom/event-handler'
    import Manipulator from './dom/manipulator'
    import SelectorEngine from './dom/selector-engine'

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

    const NAME = 'modal'
    const VERSION = '3.2.2'
    const DATA_KEY = 'coreui.modal'
    const EVENT_KEY = `.${DATA_KEY}`
    const DATA_API_KEY = '.data-api'
    const ESCAPE_KEY = 'Escape'

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

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

    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 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 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'

    /**
     * ------------------------------------------------------------------------
     * Class Definition
     * ------------------------------------------------------------------------
     */

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

      // 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
        }

        if (this._element.classList.contains(CLASS_NAME_FADE)) {
          this._isTransitioning = true
        }

        const showEvent = EventHandler.trigger(this._element, EVENT_SHOW, {
          relatedTarget
        })

        if (this._isShown || showEvent.defaultPrevented) {
          return
        }

        this._isShown = true

        this._checkScrollbar()
        this._setScrollbar()

        this._adjustDialog()

        this._setEscapeEvent()
        this._setResizeEvent()

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

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

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

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

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

        const hideEvent = EventHandler.trigger(this._element, EVENT_HIDE)

        if (hideEvent.defaultPrevented) {
          return
        }

        this._isShown = false
        const transition = this._element.classList.contains(CLASS_NAME_FADE)

        if (transition) {
          this._isTransitioning = true
        }

        this._setEscapeEvent()
        this._setResizeEvent()

        EventHandler.off(document, EVENT_FOCUSIN)

        this._element.classList.remove(CLASS_NAME_SHOW)

        EventHandler.off(this._element, EVENT_CLICK_DISMISS)
        EventHandler.off(this._dialog, EVENT_MOUSEDOWN_DISMISS)

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

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

      dispose() {
        [window, this._element, this._dialog]
          .forEach(htmlElement => EventHandler.off(htmlElement, 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
         */
        EventHandler.off(document, EVENT_FOCUSIN)

        Data.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
        }
        typeCheckConfig(NAME, config, DefaultType)
        return config
      }

      _showElement(relatedTarget) {
        const transition = this._element.classList.contains(CLASS_NAME_FADE)
        const modalBody = SelectorEngine.findOne(SELECTOR_MODAL_BODY, this._dialog)

        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')
        this._element.scrollTop = 0

        if (modalBody) {
          modalBody.scrollTop = 0
        }

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

        this._element.classList.add(CLASS_NAME_SHOW)

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

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

          this._isTransitioning = false
          EventHandler.trigger(this._element, EVENT_SHOWN, {
            relatedTarget
          })
        }

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

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

      _enforceFocus() {
        EventHandler.off(document, EVENT_FOCUSIN) // guard against infinite focus loop
        EventHandler.on(document, EVENT_FOCUSIN, event => {
          Eif (document !== event.target &&
              this._element !== event.target &&
              !this._element.contains(event.target)) {
            this._element.focus()
          }
        })
      }

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

      _setResizeEvent() {
        if (this._isShown) {
          EventHandler.on(window, EVENT_RESIZE, () => this._adjustDialog())
        } else {
          EventHandler.off(window, 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.classList.remove(CLASS_NAME_OPEN)
          this._resetAdjustments()
          this._resetScrollbar()
          EventHandler.trigger(this._element, EVENT_HIDDEN)
        })
      }

      _removeBackdrop() {
        this._backdrop.parentNode.removeChild(this._backdrop)
        this._backdrop = null
      }

      _showBackdrop(callback) {
        const animate = this._element.classList.contains(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)
          }

          document.body.appendChild(this._backdrop)

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

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

            this._triggerBackdropTransition()
          })

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

          this._backdrop.classList.add(CLASS_NAME_SHOW)

          if (!animate) {
            callback()
            return
          }

          const backdropTransitionDuration = getTransitionDurationFromElement(this._backdrop)

          EventHandler.one(this._backdrop, TRANSITION_END, callback)
          emulateTransitionEnd(this._backdrop, backdropTransitionDuration)
        } else if (!this._isShown && this._backdrop) {
          this._backdrop.classList.remove(CLASS_NAME_SHOW)

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

          if (this._element.classList.contains(CLASS_NAME_FADE)) {
            const backdropTransitionDuration = getTransitionDurationFromElement(this._backdrop)
            EventHandler.one(this._backdrop, TRANSITION_END, callbackRemove)
            emulateTransitionEnd(this._backdrop, backdropTransitionDuration)
          } else {
            callbackRemove()
          }
        } else {
          callback()
        }
      }

      _triggerBackdropTransition() {
        if (this._config.backdrop === 'static') {
          const hideEvent = EventHandler.trigger(this._element, EVENT_HIDE_PREVENTED)
          Iif (hideEvent.defaultPrevented) {
            return
          }

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

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

          this._element.classList.add(CLASS_NAME_STATIC)
          const modalTransitionDuration = getTransitionDurationFromElement(this._dialog)
          EventHandler.off(this._element, TRANSITION_END)
          EventHandler.one(this._element, TRANSITION_END, () => {
            this._element.classList.remove(CLASS_NAME_STATIC)
            Eif (!isModalOverflowing) {
              EventHandler.one(this._element, TRANSITION_END, () => {
                this._element.style.overflowY = ''
              })
              emulateTransitionEnd(this._element, modalTransitionDuration)
            }
          })
          emulateTransitionEnd(this._element, modalTransitionDuration)
          this._element.focus()
        } else {
          this.hide()
        }
      }

      // ----------------------------------------------------------------------
      // the following methods are used to handle overflowing modals
      // ----------------------------------------------------------------------

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

        Iif (!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

          // Adjust fixed content padding
          SelectorEngine.find(SELECTOR_FIXED_CONTENT)
            .forEach(element => {
              const actualPadding = element.style.paddingRight
              const calculatedPadding = window.getComputedStyle(element)['padding-right']
              Manipulator.setDataAttribute(element, 'padding-right', actualPadding)
              element.style.paddingRight = `${parseFloat(calculatedPadding) + this._scrollbarWidth}px`
            })

          // Adjust sticky content margin
          SelectorEngine.find(SELECTOR_STICKY_CONTENT)
            .forEach(element => {
              const actualMargin = element.style.marginRight
              const calculatedMargin = window.getComputedStyle(element)['margin-right']
              Manipulator.setDataAttribute(element, 'margin-right', actualMargin)
              element.style.marginRight = `${parseFloat(calculatedMargin) - this._scrollbarWidth}px`
            })

          // Adjust body padding
          const actualPadding = document.body.style.paddingRight
          const calculatedPadding = window.getComputedStyle(document.body)['padding-right']

          Manipulator.setDataAttribute(document.body, 'padding-right', actualPadding)
          document.body.style.paddingRight = `${parseFloat(calculatedPadding) + this._scrollbarWidth}px`
        }

        document.body.classList.add(CLASS_NAME_OPEN)
      }

      _resetScrollbar() {
        // Restore fixed content padding
        SelectorEngine.find(SELECTOR_FIXED_CONTENT)
          .forEach(element => {
            const padding = Manipulator.getDataAttribute(element, 'padding-right')
            Eif (typeof padding !== 'undefined') {
              Manipulator.removeDataAttribute(element, 'padding-right')
              element.style.paddingRight = padding
            }
          })

        // Restore sticky content and navbar-toggler margin
        SelectorEngine.find(`${SELECTOR_STICKY_CONTENT}`)
          .forEach(element => {
            const margin = Manipulator.getDataAttribute(element, 'margin-right')
            Eif (typeof margin !== 'undefined') {
              Manipulator.removeDataAttribute(element, 'margin-right')
              element.style.marginRight = margin
            }
          })

        // Restore body padding
        const padding = Manipulator.getDataAttribute(document.body, 'padding-right')
        Iif (typeof padding === 'undefined') {
          document.body.style.paddingRight = ''
        } else {
          Manipulator.removeDataAttribute(document.body, 'padding-right')
          document.body.style.paddingRight = 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 = Data.getData(this, DATA_KEY)
          const _config = {
            ...Default,
            ...Manipulator.getDataAttributes(this),
            ...(typeof config === 'object' && config ? config : {})
          }

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

          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)
          }
        })
      }

      static getInstance(element) {
        return Data.getData(element, DATA_KEY)
      }
    }

    /**
     * ------------------------------------------------------------------------
     * Data Api implementation
     * ------------------------------------------------------------------------
     */

    EventHandler.on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, function (event) {
      const target = getElementFromSelector(this)

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

      EventHandler.one(target, EVENT_SHOW, showEvent => {
        if (showEvent.defaultPrevented) {
          // only register focus restorer if modal will actually get shown
          return
        }

        EventHandler.one(target, EVENT_HIDDEN, () => {
          if (isVisible(this)) {
            this.focus()
          }
        })
      })

      let data = Data.getData(target, DATA_KEY)
      if (!data) {
        const config = {
          ...Manipulator.getDataAttributes(target),
          ...Manipulator.getDataAttributes(this)
        }

        data = new Modal(target, config)
      }

      data.show(this)
    })

    const $ = getjQuery()

    /**
     * ------------------------------------------------------------------------
     * jQuery
     * ------------------------------------------------------------------------
     * add .modal to jQuery only if jQuery is present
     */
    /* istanbul ignore if */
    if ($) {
      const JQUERY_NO_CONFLICT = $.fn[NAME]
      $.fn[NAME] = Modal.jQueryInterface
      $.fn[NAME].Constructor = Modal
      $.fn[NAME].noConflict = () => {
        $.fn[NAME] = JQUERY_NO_CONFLICT
        return Modal.jQueryInterface
      }
    }

    export default Modal