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|
/**
* --------------------------------------------------------------------------
* Bootstrap (v4.3.1): button.js
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* --------------------------------------------------------------------------
*/
import {
jQuery as $
} from './util/index'
import Data from './dom/data'
import EventHandler from './dom/eventHandler'
import SelectorEngine from './dom/selectorEngine'
/**
* ------------------------------------------------------------------------
* Constants
* ------------------------------------------------------------------------
*/
const NAME = 'button'
const VERSION = '4.3.1'
const DATA_KEY = 'bs.button'
const EVENT_KEY = `.${DATA_KEY}`
const DATA_API_KEY = '.data-api'
const ClassName = {
ACTIVE: 'active',
BUTTON: 'btn',
FOCUS: 'focus'
}
const Selector = {
DATA_TOGGLE_CARROT: '[data-toggle^="button"]',
DATA_TOGGLE: '[data-toggle="buttons"]',
INPUT: 'input:not([type="hidden"])',
ACTIVE: '.active',
BUTTON: '.btn'
}
const Event = {
CLICK_DATA_API: `click${EVENT_KEY}${DATA_API_KEY}`,
FOCUS_DATA_API: `focus${EVENT_KEY}${DATA_API_KEY}`,
BLUR_DATA_API: `blur${EVENT_KEY}${DATA_API_KEY}`
}
/**
* ------------------------------------------------------------------------
* Class Definition
* ------------------------------------------------------------------------
*/
class Button {
constructor(element) {
this._element = element
Data.setData(element, DATA_KEY, this)
}
// Getters
static get VERSION() {
return VERSION
}
// Public
toggle() {
let triggerChangeEvent = true
let addAriaPressed = true
const rootElement = SelectorEngine.closest(
this._element,
Selector.DATA_TOGGLE
)
if (rootElement) {
const input = SelectorEngine.findOne(Selector.INPUT, this._element)
if (input) {
if (input.type === 'radio') {
if (input.checked &&
this._element.classList.contains(ClassName.ACTIVE)) {
triggerChangeEvent = false
} else {
const activeElement = SelectorEngine.findOne(Selector.ACTIVE, rootElement)
if (activeElement) {
activeElement.classList.remove(ClassName.ACTIVE)
}
}
}
if (triggerChangeEvent) {
if (input.hasAttribute('disabled') ||
rootElement.hasAttribute('disabled') ||
input.classList.contains('disabled') ||
rootElement.classList.contains('disabled')) {
return
}
input.checked = !this._element.classList.contains(ClassName.ACTIVE)
EventHandler.trigger(input, 'change')
}
input.focus()
addAriaPressed = false
}
}
if (addAriaPressed) {
this._element.setAttribute('aria-pressed',
!this._element.classList.contains(ClassName.ACTIVE))
}
if (triggerChangeEvent) {
this._element.classList.toggle(ClassName.ACTIVE)
}
}
dispose() {
Data.removeData(this._element, DATA_KEY)
this._element = null
}
// Static
static _jQueryInterface(config) {
return this.each(function () {
let data = Data.getData(this, DATA_KEY)
if (!data) {
data = new Button(this)
}
if (config === 'toggle') {
data[config]()
}
})
}
static _getInstance(element) {
return Data.getData(element, DATA_KEY)
}
}
/**
* ------------------------------------------------------------------------
* Data Api implementation
* ------------------------------------------------------------------------
*/
EventHandler.on(document, Event.CLICK_DATA_API, Selector.DATA_TOGGLE_CARROT, event => {
event.preventDefault()
let button = event.target
if (!button.classList.contains(ClassName.BUTTON)) {
button = SelectorEngine.closest(button, Selector.BUTTON)
}
let data = Data.getData(button, DATA_KEY)
if (!data) {
data = new Button(button)
Data.setData(button, DATA_KEY, data)
}
data.toggle()
})
EventHandler.on(document, Event.FOCUS_DATA_API, Selector.DATA_TOGGLE_CARROT, event => {
const button = SelectorEngine.closest(event.target, Selector.BUTTON)
button.classList.add(ClassName.FOCUS)
})
EventHandler.on(document, Event.BLUR_DATA_API, Selector.DATA_TOGGLE_CARROT, event => {
const button = SelectorEngine.closest(event.target, Selector.BUTTON)
button.classList.remove(ClassName.FOCUS)
})
/**
* ------------------------------------------------------------------------
* jQuery
* ------------------------------------------------------------------------
* add .button to jQuery only if jQuery is present
*/
if (typeof $ !== 'undefined') {
const JQUERY_NO_CONFLICT = $.fn[NAME]
$.fn[NAME] = Button._jQueryInterface
$.fn[NAME].Constructor = Button
$.fn[NAME].noConflict = () => {
$.fn[NAME] = JQUERY_NO_CONFLICT
return Button._jQueryInterface
}
}
export default Button
|
