mirror of
https://github.com/twbs/bootstrap.git
synced 2024-11-29 11:24:18 +01:00
538 lines
15 KiB
JavaScript
538 lines
15 KiB
JavaScript
import $ from 'jquery'
|
|
import Popper from 'popper.js'
|
|
import Util from './util'
|
|
|
|
/**
|
|
* --------------------------------------------------------------------------
|
|
* Bootstrap (v4.1.3): dropdown.js
|
|
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
|
|
* --------------------------------------------------------------------------
|
|
*/
|
|
|
|
/**
|
|
* ------------------------------------------------------------------------
|
|
* Constants
|
|
* ------------------------------------------------------------------------
|
|
*/
|
|
|
|
const NAME = 'dropdown'
|
|
const VERSION = '4.1.3'
|
|
const DATA_KEY = 'bs.dropdown'
|
|
const EVENT_KEY = `.${DATA_KEY}`
|
|
const DATA_API_KEY = '.data-api'
|
|
const JQUERY_NO_CONFLICT = $.fn[NAME]
|
|
const ESCAPE_KEYCODE = 27 // KeyboardEvent.which value for Escape (Esc) key
|
|
const SPACE_KEYCODE = 32 // KeyboardEvent.which value for space key
|
|
const TAB_KEYCODE = 9 // KeyboardEvent.which value for tab key
|
|
const ARROW_UP_KEYCODE = 38 // KeyboardEvent.which value for up arrow key
|
|
const ARROW_DOWN_KEYCODE = 40 // KeyboardEvent.which value for down arrow key
|
|
const RIGHT_MOUSE_BUTTON_WHICH = 3 // MouseEvent.which value for the right button (assuming a right-handed mouse)
|
|
const REGEXP_KEYDOWN = new RegExp(`${ARROW_UP_KEYCODE}|${ARROW_DOWN_KEYCODE}|${ESCAPE_KEYCODE}`)
|
|
|
|
const Event = {
|
|
HIDE : `hide${EVENT_KEY}`,
|
|
HIDDEN : `hidden${EVENT_KEY}`,
|
|
SHOW : `show${EVENT_KEY}`,
|
|
SHOWN : `shown${EVENT_KEY}`,
|
|
CLICK : `click${EVENT_KEY}`,
|
|
CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`,
|
|
KEYDOWN_DATA_API : `keydown${EVENT_KEY}${DATA_API_KEY}`,
|
|
KEYUP_DATA_API : `keyup${EVENT_KEY}${DATA_API_KEY}`
|
|
}
|
|
|
|
const ClassName = {
|
|
DISABLED : 'disabled',
|
|
SHOW : 'show',
|
|
DROPUP : 'dropup',
|
|
DROPRIGHT : 'dropright',
|
|
DROPLEFT : 'dropleft',
|
|
MENURIGHT : 'dropdown-menu-right',
|
|
MENULEFT : 'dropdown-menu-left',
|
|
POSITION_STATIC : 'position-static'
|
|
}
|
|
|
|
const Selector = {
|
|
DATA_TOGGLE : '[data-toggle="dropdown"]',
|
|
FORM_CHILD : '.dropdown form',
|
|
MENU : '.dropdown-menu',
|
|
NAVBAR_NAV : '.navbar-nav',
|
|
VISIBLE_ITEMS : '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'
|
|
}
|
|
|
|
const AttachmentMap = {
|
|
TOP : 'top-start',
|
|
TOPEND : 'top-end',
|
|
BOTTOM : 'bottom-start',
|
|
BOTTOMEND : 'bottom-end',
|
|
RIGHT : 'right-start',
|
|
RIGHTEND : 'right-end',
|
|
LEFT : 'left-start',
|
|
LEFTEND : 'left-end'
|
|
}
|
|
|
|
const Default = {
|
|
offset : 0,
|
|
flip : true,
|
|
boundary : 'scrollParent',
|
|
reference : 'toggle',
|
|
display : 'dynamic'
|
|
}
|
|
|
|
const DefaultType = {
|
|
offset : '(number|string|function)',
|
|
flip : 'boolean',
|
|
boundary : '(string|element)',
|
|
reference : '(string|element)',
|
|
display : 'string'
|
|
}
|
|
|
|
/**
|
|
* ------------------------------------------------------------------------
|
|
* Class Definition
|
|
* ------------------------------------------------------------------------
|
|
*/
|
|
|
|
class Dropdown {
|
|
constructor(element, config) {
|
|
this._element = element
|
|
this._popper = null
|
|
this._config = this._getConfig(config)
|
|
this._menu = this._getMenuElement()
|
|
this._inNavbar = this._detectNavbar()
|
|
|
|
this._addEventListeners()
|
|
}
|
|
|
|
// Getters
|
|
|
|
static get VERSION() {
|
|
return VERSION
|
|
}
|
|
|
|
static get Default() {
|
|
return Default
|
|
}
|
|
|
|
static get DefaultType() {
|
|
return DefaultType
|
|
}
|
|
|
|
// Public
|
|
|
|
toggle() {
|
|
if (this._element.disabled || $(this._element).hasClass(ClassName.DISABLED)) {
|
|
return
|
|
}
|
|
|
|
const parent = Dropdown._getParentFromElement(this._element)
|
|
const isActive = $(this._menu).hasClass(ClassName.SHOW)
|
|
|
|
Dropdown._clearMenus()
|
|
|
|
if (isActive) {
|
|
return
|
|
}
|
|
|
|
const relatedTarget = {
|
|
relatedTarget: this._element
|
|
}
|
|
const showEvent = $.Event(Event.SHOW, relatedTarget)
|
|
|
|
$(parent).trigger(showEvent)
|
|
|
|
if (showEvent.isDefaultPrevented()) {
|
|
return
|
|
}
|
|
|
|
// Disable totally Popper.js for Dropdown in Navbar
|
|
if (!this._inNavbar) {
|
|
/**
|
|
* Check for Popper dependency
|
|
* Popper - https://popper.js.org
|
|
*/
|
|
if (typeof Popper === 'undefined') {
|
|
throw new TypeError('Bootstrap\'s dropdowns require Popper.js (https://popper.js.org/)')
|
|
}
|
|
|
|
let referenceElement = this._element
|
|
|
|
if (this._config.reference === 'parent') {
|
|
referenceElement = parent
|
|
} else if (Util.isElement(this._config.reference)) {
|
|
referenceElement = this._config.reference
|
|
|
|
// Check if it's jQuery element
|
|
if (typeof this._config.reference.jquery !== 'undefined') {
|
|
referenceElement = this._config.reference[0]
|
|
}
|
|
}
|
|
|
|
// If boundary is not `scrollParent`, then set position to `static`
|
|
// to allow the menu to "escape" the scroll parent's boundaries
|
|
// https://github.com/twbs/bootstrap/issues/24251
|
|
if (this._config.boundary !== 'scrollParent') {
|
|
$(parent).addClass(ClassName.POSITION_STATIC)
|
|
}
|
|
this._popper = new Popper(referenceElement, this._menu, this._getPopperConfig())
|
|
}
|
|
|
|
// If this is a touch-enabled device we add extra
|
|
// empty mouseover listeners to the body's immediate children;
|
|
// only needed because of broken event delegation on iOS
|
|
// https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
|
|
if ('ontouchstart' in document.documentElement &&
|
|
$(parent).closest(Selector.NAVBAR_NAV).length === 0) {
|
|
$(document.body).children().on('mouseover', null, $.noop)
|
|
}
|
|
|
|
this._element.focus()
|
|
this._element.setAttribute('aria-expanded', true)
|
|
|
|
$(this._menu).toggleClass(ClassName.SHOW)
|
|
$(parent)
|
|
.toggleClass(ClassName.SHOW)
|
|
.trigger($.Event(Event.SHOWN, relatedTarget))
|
|
}
|
|
|
|
show() {
|
|
if (this._element.disabled || $(this._element).hasClass(ClassName.DISABLED) || $(this._menu).hasClass(ClassName.SHOW)) {
|
|
return
|
|
}
|
|
|
|
const relatedTarget = {
|
|
relatedTarget: this._element
|
|
}
|
|
const showEvent = $.Event(Event.SHOW, relatedTarget)
|
|
|
|
const parent = Dropdown._getParentFromElement(this._element)
|
|
$(parent).trigger(showEvent)
|
|
|
|
if (showEvent.isDefaultPrevented()) {
|
|
return
|
|
}
|
|
|
|
$(this._menu).toggleClass(ClassName.SHOW)
|
|
$(parent)
|
|
.toggleClass(ClassName.SHOW)
|
|
.trigger($.Event(Event.SHOWN, relatedTarget))
|
|
}
|
|
|
|
hide() {
|
|
if (this._element.disabled || $(this._element).hasClass(ClassName.DISABLED) || !$(this._menu).hasClass(ClassName.SHOW)) {
|
|
return
|
|
}
|
|
|
|
const relatedTarget = {
|
|
relatedTarget: this._element
|
|
}
|
|
const hideEvent = $.Event(Event.HIDE, relatedTarget)
|
|
|
|
const parent = Dropdown._getParentFromElement(this._element)
|
|
$(parent).trigger(hideEvent)
|
|
|
|
if (hideEvent.isDefaultPrevented()) {
|
|
return
|
|
}
|
|
|
|
$(this._menu).toggleClass(ClassName.SHOW)
|
|
$(parent)
|
|
.toggleClass(ClassName.SHOW)
|
|
.trigger($.Event(Event.HIDDEN, relatedTarget))
|
|
}
|
|
|
|
dispose() {
|
|
$.removeData(this._element, DATA_KEY)
|
|
$(this._element).off(EVENT_KEY)
|
|
this._element = null
|
|
this._menu = null
|
|
if (this._popper !== null) {
|
|
this._popper.destroy()
|
|
this._popper = null
|
|
}
|
|
}
|
|
|
|
update() {
|
|
this._inNavbar = this._detectNavbar()
|
|
if (this._popper !== null) {
|
|
this._popper.scheduleUpdate()
|
|
}
|
|
}
|
|
|
|
// Private
|
|
|
|
_addEventListeners() {
|
|
$(this._element).on(Event.CLICK, (event) => {
|
|
event.preventDefault()
|
|
event.stopPropagation()
|
|
this.toggle()
|
|
})
|
|
}
|
|
|
|
_getConfig(config) {
|
|
config = {
|
|
...this.constructor.Default,
|
|
...$(this._element).data(),
|
|
...config
|
|
}
|
|
|
|
Util.typeCheckConfig(
|
|
NAME,
|
|
config,
|
|
this.constructor.DefaultType
|
|
)
|
|
|
|
return config
|
|
}
|
|
|
|
_getMenuElement() {
|
|
if (!this._menu) {
|
|
const parent = Dropdown._getParentFromElement(this._element)
|
|
if (parent) {
|
|
this._menu = parent.querySelector(Selector.MENU)
|
|
}
|
|
}
|
|
return this._menu
|
|
}
|
|
|
|
_getPlacement() {
|
|
const $parentDropdown = $(this._element.parentNode)
|
|
let placement = AttachmentMap.BOTTOM
|
|
|
|
// Handle dropup
|
|
if ($parentDropdown.hasClass(ClassName.DROPUP)) {
|
|
placement = AttachmentMap.TOP
|
|
if ($(this._menu).hasClass(ClassName.MENURIGHT)) {
|
|
placement = AttachmentMap.TOPEND
|
|
}
|
|
} else if ($parentDropdown.hasClass(ClassName.DROPRIGHT)) {
|
|
placement = AttachmentMap.RIGHT
|
|
} else if ($parentDropdown.hasClass(ClassName.DROPLEFT)) {
|
|
placement = AttachmentMap.LEFT
|
|
} else if ($(this._menu).hasClass(ClassName.MENURIGHT)) {
|
|
placement = AttachmentMap.BOTTOMEND
|
|
}
|
|
return placement
|
|
}
|
|
|
|
_detectNavbar() {
|
|
return $(this._element).closest('.navbar').length > 0
|
|
}
|
|
|
|
_getPopperConfig() {
|
|
const offsetConf = {}
|
|
if (typeof this._config.offset === 'function') {
|
|
offsetConf.fn = (data) => {
|
|
data.offsets = {
|
|
...data.offsets,
|
|
...this._config.offset(data.offsets) || {}
|
|
}
|
|
return data
|
|
}
|
|
} else {
|
|
offsetConf.offset = this._config.offset
|
|
}
|
|
|
|
const popperConfig = {
|
|
placement: this._getPlacement(),
|
|
modifiers: {
|
|
offset: offsetConf,
|
|
flip: {
|
|
enabled: this._config.flip
|
|
},
|
|
preventOverflow: {
|
|
boundariesElement: this._config.boundary
|
|
}
|
|
}
|
|
}
|
|
|
|
// Disable Popper.js if we have a static display
|
|
if (this._config.display === 'static') {
|
|
popperConfig.modifiers.applyStyle = {
|
|
enabled: false
|
|
}
|
|
}
|
|
return popperConfig
|
|
}
|
|
|
|
// Static
|
|
|
|
static _jQueryInterface(config) {
|
|
return this.each(function () {
|
|
let data = $(this).data(DATA_KEY)
|
|
const _config = typeof config === 'object' ? config : null
|
|
|
|
if (!data) {
|
|
data = new Dropdown(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]()
|
|
}
|
|
})
|
|
}
|
|
|
|
static _clearMenus(event) {
|
|
if (event && (event.which === RIGHT_MOUSE_BUTTON_WHICH ||
|
|
event.type === 'keyup' && event.which !== TAB_KEYCODE)) {
|
|
return
|
|
}
|
|
|
|
const toggles = [].slice.call(document.querySelectorAll(Selector.DATA_TOGGLE))
|
|
for (let i = 0, len = toggles.length; i < len; i++) {
|
|
const parent = Dropdown._getParentFromElement(toggles[i])
|
|
const context = $(toggles[i]).data(DATA_KEY)
|
|
const relatedTarget = {
|
|
relatedTarget: toggles[i]
|
|
}
|
|
|
|
if (event && event.type === 'click') {
|
|
relatedTarget.clickEvent = event
|
|
}
|
|
|
|
if (!context) {
|
|
continue
|
|
}
|
|
|
|
const dropdownMenu = context._menu
|
|
if (!$(parent).hasClass(ClassName.SHOW)) {
|
|
continue
|
|
}
|
|
|
|
if (event && (event.type === 'click' &&
|
|
/input|textarea/i.test(event.target.tagName) || event.type === 'keyup' && event.which === TAB_KEYCODE) &&
|
|
$.contains(parent, event.target)) {
|
|
continue
|
|
}
|
|
|
|
const hideEvent = $.Event(Event.HIDE, relatedTarget)
|
|
$(parent).trigger(hideEvent)
|
|
if (hideEvent.isDefaultPrevented()) {
|
|
continue
|
|
}
|
|
|
|
// If this is a touch-enabled device we remove the extra
|
|
// empty mouseover listeners we added for iOS support
|
|
if ('ontouchstart' in document.documentElement) {
|
|
$(document.body).children().off('mouseover', null, $.noop)
|
|
}
|
|
|
|
toggles[i].setAttribute('aria-expanded', 'false')
|
|
|
|
$(dropdownMenu).removeClass(ClassName.SHOW)
|
|
$(parent)
|
|
.removeClass(ClassName.SHOW)
|
|
.trigger($.Event(Event.HIDDEN, relatedTarget))
|
|
}
|
|
}
|
|
|
|
static _getParentFromElement(element) {
|
|
let parent
|
|
const selector = Util.getSelectorFromElement(element)
|
|
|
|
if (selector) {
|
|
parent = document.querySelector(selector)
|
|
}
|
|
|
|
return parent || element.parentNode
|
|
}
|
|
|
|
// eslint-disable-next-line complexity
|
|
static _dataApiKeydownHandler(event) {
|
|
// If not input/textarea:
|
|
// - And not a key in REGEXP_KEYDOWN => not a dropdown command
|
|
// If input/textarea:
|
|
// - If space key => not a dropdown command
|
|
// - If key is other than escape
|
|
// - If key is not up or down => not a dropdown command
|
|
// - If trigger inside the menu => not a dropdown command
|
|
if (/input|textarea/i.test(event.target.tagName)
|
|
? event.which === SPACE_KEYCODE || event.which !== ESCAPE_KEYCODE &&
|
|
(event.which !== ARROW_DOWN_KEYCODE && event.which !== ARROW_UP_KEYCODE ||
|
|
$(event.target).closest(Selector.MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {
|
|
return
|
|
}
|
|
|
|
event.preventDefault()
|
|
event.stopPropagation()
|
|
|
|
if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {
|
|
return
|
|
}
|
|
|
|
const parent = Dropdown._getParentFromElement(this)
|
|
const isActive = $(parent).hasClass(ClassName.SHOW)
|
|
|
|
if (!isActive && (event.which !== ESCAPE_KEYCODE || event.which !== SPACE_KEYCODE) ||
|
|
isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
|
|
if (event.which === ESCAPE_KEYCODE) {
|
|
const toggle = parent.querySelector(Selector.DATA_TOGGLE)
|
|
$(toggle).trigger('focus')
|
|
}
|
|
|
|
$(this).trigger('click')
|
|
return
|
|
}
|
|
|
|
const items = [].slice.call(parent.querySelectorAll(Selector.VISIBLE_ITEMS))
|
|
|
|
if (items.length === 0) {
|
|
return
|
|
}
|
|
|
|
let index = items.indexOf(event.target)
|
|
|
|
if (event.which === ARROW_UP_KEYCODE && index > 0) { // Up
|
|
index--
|
|
}
|
|
|
|
if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) { // Down
|
|
index++
|
|
}
|
|
|
|
if (index < 0) {
|
|
index = 0
|
|
}
|
|
|
|
items[index].focus()
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ------------------------------------------------------------------------
|
|
* Data Api implementation
|
|
* ------------------------------------------------------------------------
|
|
*/
|
|
|
|
$(document)
|
|
.on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE, Dropdown._dataApiKeydownHandler)
|
|
.on(Event.KEYDOWN_DATA_API, Selector.MENU, Dropdown._dataApiKeydownHandler)
|
|
.on(`${Event.CLICK_DATA_API} ${Event.KEYUP_DATA_API}`, Dropdown._clearMenus)
|
|
.on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
|
|
event.preventDefault()
|
|
event.stopPropagation()
|
|
Dropdown._jQueryInterface.call($(this), 'toggle')
|
|
})
|
|
.on(Event.CLICK_DATA_API, Selector.FORM_CHILD, (e) => {
|
|
e.stopPropagation()
|
|
})
|
|
|
|
/**
|
|
* ------------------------------------------------------------------------
|
|
* jQuery
|
|
* ------------------------------------------------------------------------
|
|
*/
|
|
|
|
$.fn[NAME] = Dropdown._jQueryInterface
|
|
$.fn[NAME].Constructor = Dropdown
|
|
$.fn[NAME].noConflict = () => {
|
|
$.fn[NAME] = JQUERY_NO_CONFLICT
|
|
return Dropdown._jQueryInterface
|
|
}
|
|
|
|
|
|
export default Dropdown
|