modal.js 17.01 KiB
/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.3.1): modal.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
import {
  jQuery as $,
  TRANSITION_END,
  emulateTransitionEnd,
  getSelectorFromElement,
  getTransitionDurationFromElement,
  isVisible,
  makeArray,
  reflow,
  typeCheckConfig
} from './util/index'
import Data from './dom/data'
import EventHandler from './dom/eventHandler'
import Manipulator from './dom/manipulator'
import SelectorEngine from './dom/selectorEngine'
/**
 * ------------------------------------------------------------------------
 * Constants
 * ------------------------------------------------------------------------
const NAME               = 'modal'
const VERSION            = '4.3.1'
const DATA_KEY           = 'bs.modal'
const EVENT_KEY          = `.${DATA_KEY}`
const DATA_API_KEY       = '.data-api'
const ESCAPE_KEYCODE     = 27 // KeyboardEvent.which value for Escape (Esc) key
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${EVENT_KEY}`,
  HIDDEN            : `hidden${EVENT_KEY}`,
  SHOW              : `show${EVENT_KEY}`,
  SHOWN             : `shown${EVENT_KEY}`,
  FOCUSIN           : `focusin${EVENT_KEY}`,
  RESIZE            : `resize${EVENT_KEY}`,
  CLICK_DISMISS     : `click.dismiss${EVENT_KEY}`,
  KEYDOWN_DISMISS   : `keydown.dismiss${EVENT_KEY}`,
  MOUSEUP_DISMISS   : `mouseup.dismiss${EVENT_KEY}`,
  MOUSEDOWN_DISMISS : `mousedown.dismiss${EVENT_KEY}`,
  CLICK_DATA_API    : `click${EVENT_KEY}${DATA_API_KEY}`
const ClassName = {
  SCROLLABLE         : 'modal-dialog-scrollable',
  SCROLLBAR_MEASURER : 'modal-scrollbar-measure',
  BACKDROP           : 'modal-backdrop',
  OPEN               : 'modal-open',
  FADE               : 'fade',
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SHOW : 'show' } const Selector = { DIALOG : '.modal-dialog', MODAL_BODY : '.modal-body', DATA_TOGGLE : '[data-toggle="modal"]', DATA_DISMISS : '[data-dismiss="modal"]', FIXED_CONTENT : '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top', 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(ClassName.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()
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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 (!this._isShown || hideEvent.defaultPrevented) { return } this._isShown = false const transition = this._element.classList.contains(ClassName.FADE) if (transition) { this._isTransitioning = true } this._setEscapeEvent() this._setResizeEvent() EventHandler.off(document, Event.FOCUSIN) this._element.classList.remove(ClassName.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)) /**
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* `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(ClassName.FADE) 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) if (this._dialog.classList.contains(ClassName.SCROLLABLE)) { SelectorEngine.findOne(Selector.MODAL_BODY, this._dialog).scrollTop = 0 } else { this._element.scrollTop = 0 } if (transition) { reflow(this._element) } this._element.classList.add(ClassName.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
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}) } 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) => { if (document !== event.target && this._element !== event.target && !this._element.contains(event.target)) { this._element.focus() } }) } _setEscapeEvent() { if (this._isShown && this._config.keyboard) { EventHandler.on(this._element, Event.KEYDOWN_DISMISS, (event) => { if (event.which === ESCAPE_KEYCODE) { event.preventDefault() this.hide() } }) } else if (!this._isShown) { EventHandler.off(this._element, Event.KEYDOWN_DISMISS) } } _setResizeEvent() { if (this._isShown) { EventHandler.on(window, Event.RESIZE, (event) => this.handleUpdate(event)) } else { EventHandler.off(window, Event.RESIZE) } } _hideModal() { this._element.style.display = 'none' this._element.setAttribute('aria-hidden', true) this._element.removeAttribute('aria-modal') this._isTransitioning = false this._showBackdrop(() => { document.body.classList.remove(ClassName.OPEN) this._resetAdjustments() this._resetScrollbar() EventHandler.trigger(this._element, Event.HIDDEN) }) } _removeBackdrop() { if (this._backdrop) { this._backdrop.parentNode.removeChild(this._backdrop) this._backdrop = null } } _showBackdrop(callback) { const animate = this._element.classList.contains(ClassName.FADE) ? ClassName.FADE : ''
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if (this._isShown && this._config.backdrop) { this._backdrop = document.createElement('div') this._backdrop.className = ClassName.BACKDROP if (animate) { this._backdrop.classList.add(animate) } document.body.appendChild(this._backdrop) EventHandler.on(this._element, Event.CLICK_DISMISS, (event) => { if (this._ignoreBackdropClick) { this._ignoreBackdropClick = false return } if (event.target !== event.currentTarget) { return } if (this._config.backdrop === 'static') { this._element.focus() } else { this.hide() } }) if (animate) { reflow(this._backdrop) } this._backdrop.classList.add(ClassName.SHOW) if (!callback) { return } 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(ClassName.SHOW) const callbackRemove = () => { this._removeBackdrop() if (callback) { callback() } } if (this._element.classList.contains(ClassName.FADE)) { const backdropTransitionDuration = getTransitionDurationFromElement(this._backdrop) EventHandler.one(this._backdrop, TRANSITION_END, callbackRemove) emulateTransitionEnd(this._backdrop, 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 // ----------------------------------------------------------------------
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_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 = 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 $(DOMNode).css('padding-right') returns the calculated value or 0 if not set // Adjust fixed content padding makeArray(SelectorEngine.find(Selector.FIXED_CONTENT)) .forEach((element) => { const actualPadding = element.style.paddingRight const calculatedPadding = window.getComputedStyle(element)['padding-right'] Manipulator.setDataAttribute(element, 'padding-right', actualPadding) element.style.paddingRight = `${parseFloat(calculatedPadding) + this._scrollbarWidth}px` }) // Adjust sticky content margin makeArray(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(ClassName.OPEN) } _resetScrollbar() { // Restore fixed content padding makeArray(SelectorEngine.find(Selector.FIXED_CONTENT)) .forEach((element) => { const padding = Manipulator.getDataAttribute(element, 'padding-right') if (typeof padding !== 'undefined') { Manipulator.removeDataAttribute(element, 'padding-right') element.style.paddingRight = padding } })
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// Restore sticky content and navbar-toggler margin makeArray(SelectorEngine.find(`${Selector.STICKY_CONTENT}`)) .forEach((element) => { const margin = Manipulator.getDataAttribute(element, 'margin-right') if (typeof margin !== 'undefined') { Manipulator.removeDataAttribute(element, 'margin-right') element.style.marginRight = margin } }) // Restore body padding const padding = Manipulator.getDataAttribute(document.body, 'padding-right') if (typeof padding !== 'undefined') { Manipulator.removeDataAttribute(document.body, 'padding-right') document.body.style.paddingRight = padding } else { document.body.style.paddingRight = '' } } _getScrollbarWidth() { // thx d.walsh const scrollDiv = document.createElement('div') scrollDiv.className = ClassName.SCROLLBAR_MEASURER document.body.appendChild(scrollDiv) const scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth document.body.removeChild(scrollDiv) return scrollbarWidth } // Static static _jQueryInterface(config, relatedTarget) { return this.each(function () { let data = Data.getData(this, DATA_KEY) const _config = { ...Default, ...Manipulator.getDataAttributes(this), ...typeof config === 'object' && config ? config : {} } if (!data) { data = new Modal(this, _config) } if (typeof config === 'string') { if (typeof data[config] === 'undefined') { throw new TypeError(`No method named "${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) { let target const selector = getSelectorFromElement(this)
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if (selector) { target = SelectorEngine.findOne(selector) } const config = Data.getData(target, DATA_KEY) ? 'toggle' : { ...Manipulator.getDataAttributes(target), ...Manipulator.getDataAttributes(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) { data = new Modal(target, config) } data.show(this) }) /** * ------------------------------------------------------------------------ * jQuery * ------------------------------------------------------------------------ */ if (typeof $ !== 'undefined') { 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