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tab.js
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Fri, Nov 29, 10:18

tab.js
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/**
* --------------------------------------------------------------------------
* Bootstrap (v4.3.1): tab.js
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* --------------------------------------------------------------------------
*/
import $ from 'jquery'
import Util from './util'
/**
* ------------------------------------------------------------------------
* Constants
* ------------------------------------------------------------------------
*/
const NAME = 'tab'
const VERSION = '4.3.1'
const DATA_KEY = 'bs.tab'
const EVENT_KEY = `.${DATA_KEY}`
const DATA_API_KEY = '.data-api'
const JQUERY_NO_CONFLICT = $.fn[NAME]
const Event = {
HIDE : `hide${EVENT_KEY}`,
HIDDEN : `hidden${EVENT_KEY}`,
SHOW : `show${EVENT_KEY}`,
SHOWN : `shown${EVENT_KEY}`,
CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`
}
const ClassName = {
DROPDOWN_MENU : 'dropdown-menu',
ACTIVE : 'active',
DISABLED : 'disabled',
FADE : 'fade',
SHOW : 'show'
}
const Selector = {
DROPDOWN : '.dropdown',
NAV_LIST_GROUP : '.nav, .list-group',
ACTIVE : '.active',
ACTIVE_UL : '> li > .active',
DATA_TOGGLE : '[data-toggle="tab"], [data-toggle="pill"], [data-toggle="list"]',
DROPDOWN_TOGGLE : '.dropdown-toggle',
DROPDOWN_ACTIVE_CHILD : '> .dropdown-menu .active'
}
/**
* ------------------------------------------------------------------------
* Class Definition
* ------------------------------------------------------------------------
*/
class Tab {
constructor(element) {
this._element = element
}
// Getters
static get VERSION() {
return VERSION
}
// Public
show() {
if (this._element.parentNode &&
this._element.parentNode.nodeType === Node.ELEMENT_NODE &&
$(this._element).hasClass(ClassName.ACTIVE) ||
$(this._element).hasClass(ClassName.DISABLED)) {
return
}
let target
let previous
const listElement = $(this._element).closest(Selector.NAV_LIST_GROUP)[0]
const selector = Util.getSelectorFromElement(this._element)
if (listElement) {
const itemSelector = listElement.nodeName === 'UL' || listElement.nodeName === 'OL' ? Selector.ACTIVE_UL : Selector.ACTIVE
previous = $.makeArray($(listElement).find(itemSelector))
previous = previous[previous.length - 1]
}
const hideEvent = $.Event(Event.HIDE, {
relatedTarget: this._element
})
const showEvent = $.Event(Event.SHOW, {
relatedTarget: previous
})
if (previous) {
$(previous).trigger(hideEvent)
}
$(this._element).trigger(showEvent)
if (showEvent.isDefaultPrevented() ||
hideEvent.isDefaultPrevented()) {
return
}
if (selector) {
target = document.querySelector(selector)
}
this._activate(
this._element,
listElement
)
const complete = () => {
const hiddenEvent = $.Event(Event.HIDDEN, {
relatedTarget: this._element
})
const shownEvent = $.Event(Event.SHOWN, {
relatedTarget: previous
})
$(previous).trigger(hiddenEvent)
$(this._element).trigger(shownEvent)
}
if (target) {
this._activate(target, target.parentNode, complete)
} else {
complete()
}
}
dispose() {
$.removeData(this._element, DATA_KEY)
this._element = null
}
// Private
_activate(element, container, callback) {
const activeElements = container && (container.nodeName === 'UL' || container.nodeName === 'OL')
? $(container).find(Selector.ACTIVE_UL)
: $(container).children(Selector.ACTIVE)
const active = activeElements[0]
const isTransitioning = callback && (active && $(active).hasClass(ClassName.FADE))
const complete = () => this._transitionComplete(
element,
active,
callback
)
if (active && isTransitioning) {
const transitionDuration = Util.getTransitionDurationFromElement(active)
$(active)
.removeClass(ClassName.SHOW)
.one(Util.TRANSITION_END, complete)
.emulateTransitionEnd(transitionDuration)
} else {
complete()
}
}
_transitionComplete(element, active, callback) {
if (active) {
$(active).removeClass(ClassName.ACTIVE)
const dropdownChild = $(active.parentNode).find(
Selector.DROPDOWN_ACTIVE_CHILD
)[0]
if (dropdownChild) {
$(dropdownChild).removeClass(ClassName.ACTIVE)
}
if (active.getAttribute('role') === 'tab') {
active.setAttribute('aria-selected', false)
}
}
$(element).addClass(ClassName.ACTIVE)
if (element.getAttribute('role') === 'tab') {
element.setAttribute('aria-selected', true)
}
Util.reflow(element)
if (element.classList.contains(ClassName.FADE)) {
element.classList.add(ClassName.SHOW)
}
if (element.parentNode && $(element.parentNode).hasClass(ClassName.DROPDOWN_MENU)) {
const dropdownElement = $(element).closest(Selector.DROPDOWN)[0]
if (dropdownElement) {
const dropdownToggleList = [].slice.call(dropdownElement.querySelectorAll(Selector.DROPDOWN_TOGGLE))
$(dropdownToggleList).addClass(ClassName.ACTIVE)
}
element.setAttribute('aria-expanded', true)
}
if (callback) {
callback()
}
}
// Static
static _jQueryInterface(config) {
return this.each(function () {
const $this = $(this)
let data = $this.data(DATA_KEY)
if (!data) {
data = new Tab(this)
$this.data(DATA_KEY, data)
}
if (typeof config === 'string') {
if (typeof data[config] === 'undefined') {
throw new TypeError(`No method named "${config}"`)
}
data[config]()
}
})
}
}
/**
* ------------------------------------------------------------------------
* Data Api implementation
* ------------------------------------------------------------------------
*/
$(document)
.on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
event.preventDefault()
Tab._jQueryInterface.call($(this), 'show')
})
/**
* ------------------------------------------------------------------------
* jQuery
* ------------------------------------------------------------------------
*/
$.fn[NAME] = Tab._jQueryInterface
$.fn[NAME].Constructor = Tab
$.fn[NAME].noConflict = () => {
$.fn[NAME] = JQUERY_NO_CONFLICT
return Tab._jQueryInterface
}
export default Tab

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