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Mini Shell
const TRANSITION_EVENTS = ['transitionend', 'webkitTransitionEnd', 'oTransitionEnd']
// const TRANSITION_PROPERTIES = ['transition', 'MozTransition', 'webkitTransition', 'WebkitTransition', 'OTransition']
class Menu {
constructor(el, config = {}, _PS = null) {
this._el = el
this._animate = config.animate !== false
this._accordion = config.accordion !== false
this._closeChildren = Boolean(config.closeChildren)
this._onOpen = config.onOpen || (() => {})
this._onOpened = config.onOpened || (() => {})
this._onClose = config.onClose || (() => {})
this._onClosed = config.onClosed || (() => {})
this._psScroll = null
this._topParent = null
this._menuBgClass = null
el.classList.add('menu')
el.classList[this._animate ? 'remove' : 'add']('menu-no-animation') // check
el.classList.add('menu-vertical')
const PerfectScrollbarLib = _PS || window.PerfectScrollbar
if (PerfectScrollbarLib) {
this._scrollbar = new PerfectScrollbarLib(el.querySelector('.menu-inner'), {
suppressScrollX: true,
wheelPropagation: !Menu._hasClass('layout-menu-fixed layout-menu-fixed-offcanvas')
})
window.Helpers.menuPsScroll = this._scrollbar
} else {
el.querySelector('.menu-inner').classList.add('overflow-auto')
}
// Add data attribute for bg color class of menu
const menuClassList = el.classList
for (let i = 0; i < menuClassList.length; i++) {
if (menuClassList[i].startsWith('bg-')) {
this._menuBgClass = menuClassList[i]
}
}
el.setAttribute('data-bg-class', this._menuBgClass)
this._bindEvents()
// Link menu instance to element
el.menuInstance = this
}
_bindEvents() {
// Click Event
this._evntElClick = e => {
// Find top parent element
if (e.target.closest('ul') && e.target.closest('ul').classList.contains('menu-inner')) {
const menuItem = Menu._findParent(e.target, 'menu-item', false)
// eslint-disable-next-line prefer-destructuring
if (menuItem) this._topParent = menuItem.childNodes[0]
}
const toggleLink = e.target.classList.contains('menu-toggle')
? e.target
: Menu._findParent(e.target, 'menu-toggle', false)
if (toggleLink) {
e.preventDefault()
if (toggleLink.getAttribute('data-hover') !== 'true') {
this.toggle(toggleLink)
}
}
}
if (window.Helpers.isMobileDevice) this._el.addEventListener('click', this._evntElClick)
this._evntWindowResize = () => {
this.update()
if (this._lastWidth !== window.innerWidth) {
this._lastWidth = window.innerWidth
this.update()
}
const horizontalMenuTemplate = document.querySelector("[data-template^='horizontal-menu']")
if (!this._horizontal && !horizontalMenuTemplate) this.manageScroll()
}
window.addEventListener('resize', this._evntWindowResize)
}
static childOf(/* child node */ c, /* parent node */ p) {
// returns boolean
if (c.parentNode) {
while ((c = c.parentNode) && c !== p);
return !!c
}
return false
}
_unbindEvents() {
if (this._evntElClick) {
this._el.removeEventListener('click', this._evntElClick)
this._evntElClick = null
}
if (this._evntElMouseOver) {
this._el.removeEventListener('mouseover', this._evntElMouseOver)
this._evntElMouseOver = null
}
if (this._evntElMouseOut) {
this._el.removeEventListener('mouseout', this._evntElMouseOut)
this._evntElMouseOut = null
}
if (this._evntWindowResize) {
window.removeEventListener('resize', this._evntWindowResize)
this._evntWindowResize = null
}
if (this._evntBodyClick) {
document.body.removeEventListener('click', this._evntBodyClick)
this._evntBodyClick = null
}
if (this._evntInnerMousemove) {
this._inner.removeEventListener('mousemove', this._evntInnerMousemove)
this._evntInnerMousemove = null
}
if (this._evntInnerMouseleave) {
this._inner.removeEventListener('mouseleave', this._evntInnerMouseleave)
this._evntInnerMouseleave = null
}
}
static _isRoot(item) {
return !Menu._findParent(item, 'menu-item', false)
}
static _findParent(el, cls, throwError = true) {
if (el.tagName.toUpperCase() === 'BODY') return null
el = el.parentNode
while (el.tagName.toUpperCase() !== 'BODY' && !el.classList.contains(cls)) {
el = el.parentNode
}
el = el.tagName.toUpperCase() !== 'BODY' ? el : null
if (!el && throwError) throw new Error(`Cannot find \`.${cls}\` parent element`)
return el
}
static _findChild(el, cls) {
const items = el.childNodes
const found = []
for (let i = 0, l = items.length; i < l; i++) {
if (items[i].classList) {
let passed = 0
for (let j = 0; j < cls.length; j++) {
if (items[i].classList.contains(cls[j])) passed += 1
}
if (cls.length === passed) found.push(items[i])
}
}
return found
}
static _findMenu(item) {
let curEl = item.childNodes[0]
let menu = null
while (curEl && !menu) {
if (curEl.classList && curEl.classList.contains('menu-sub')) menu = curEl
curEl = curEl.nextSibling
}
if (!menu) throw new Error('Cannot find `.menu-sub` element for the current `.menu-toggle`')
return menu
}
// Has class
static _hasClass(cls, el = window.Helpers.ROOT_EL) {
let result = false
cls.split(' ').forEach(c => {
if (el.classList.contains(c)) result = true
})
return result
}
open(el, closeChildren = this._closeChildren) {
const item = this._findUnopenedParent(Menu._getItem(el, true), closeChildren)
if (!item) return
const toggleLink = Menu._getLink(item, true)
Menu._promisify(this._onOpen, this, item, toggleLink, Menu._findMenu(item))
.then(() => {
if (!this._horizontal || !Menu._isRoot(item)) {
if (this._animate && !this._horizontal) {
window.requestAnimationFrame(() => this._toggleAnimation(true, item, false))
if (this._accordion) this._closeOther(item, closeChildren)
} else if (this._animate) {
// eslint-disable-next-line no-unused-expressions
this._onOpened && this._onOpened(this, item, toggleLink, Menu._findMenu(item))
} else {
item.classList.add('open')
// eslint-disable-next-line no-unused-expressions
this._onOpened && this._onOpened(this, item, toggleLink, Menu._findMenu(item))
if (this._accordion) this._closeOther(item, closeChildren)
}
} else {
// eslint-disable-next-line no-unused-expressions
this._onOpened && this._onOpened(this, item, toggleLink, Menu._findMenu(item))
}
})
.catch(() => {})
}
close(el, closeChildren = this._closeChildren, _autoClose = false) {
const item = Menu._getItem(el, true)
const toggleLink = Menu._getLink(el, true)
if (!item.classList.contains('open') || item.classList.contains('disabled')) return
Menu._promisify(this._onClose, this, item, toggleLink, Menu._findMenu(item), _autoClose)
.then(() => {
if (!this._horizontal || !Menu._isRoot(item)) {
if (this._animate && !this._horizontal) {
window.requestAnimationFrame(() => this._toggleAnimation(false, item, closeChildren))
} else {
item.classList.remove('open')
if (closeChildren) {
const opened = item.querySelectorAll('.menu-item.open')
for (let i = 0, l = opened.length; i < l; i++) opened[i].classList.remove('open')
}
// eslint-disable-next-line no-unused-expressions
this._onClosed && this._onClosed(this, item, toggleLink, Menu._findMenu(item))
}
} else {
// eslint-disable-next-line no-unused-expressions
this._onClosed && this._onClosed(this, item, toggleLink, Menu._findMenu(item))
}
})
.catch(() => {})
}
_closeOther(item, closeChildren) {
const opened = Menu._findChild(item.parentNode, ['menu-item', 'open'])
for (let i = 0, l = opened.length; i < l; i++) {
if (opened[i] !== item) this.close(opened[i], closeChildren)
}
}
toggle(el, closeChildren = this._closeChildren) {
const item = Menu._getItem(el, true)
// const toggleLink = Menu._getLink(el, true)
if (item.classList.contains('open')) this.close(item, closeChildren)
else this.open(item, closeChildren)
}
static _getItem(el, toggle) {
let item = null
const selector = toggle ? 'menu-toggle' : 'menu-link'
if (el.classList.contains('menu-item')) {
if (Menu._findChild(el, [selector]).length) item = el
} else if (el.classList.contains(selector)) {
item = el.parentNode.classList.contains('menu-item') ? el.parentNode : null
}
if (!item) {
throw new Error(`${toggle ? 'Toggable ' : ''}\`.menu-item\` element not found.`)
}
return item
}
static _getLink(el, toggle) {
let found = []
const selector = toggle ? 'menu-toggle' : 'menu-link'
if (el.classList.contains(selector)) found = [el]
else if (el.classList.contains('menu-item')) found = Menu._findChild(el, [selector])
if (!found.length) throw new Error(`\`${selector}\` element not found.`)
return found[0]
}
_findUnopenedParent(item, closeChildren) {
let tree = []
let parentItem = null
while (item) {
if (item.classList.contains('disabled')) {
parentItem = null
tree = []
} else {
if (!item.classList.contains('open')) parentItem = item
tree.push(item)
}
item = Menu._findParent(item, 'menu-item', false)
}
if (!parentItem) return null
if (tree.length === 1) return parentItem
tree = tree.slice(0, tree.indexOf(parentItem))
for (let i = 0, l = tree.length; i < l; i++) {
tree[i].classList.add('open')
if (this._accordion) {
const openedItems = Menu._findChild(tree[i].parentNode, ['menu-item', 'open'])
for (let j = 0, k = openedItems.length; j < k; j++) {
if (openedItems[j] !== tree[i]) {
openedItems[j].classList.remove('open')
if (closeChildren) {
const openedChildren = openedItems[j].querySelectorAll('.menu-item.open')
for (let x = 0, z = openedChildren.length; x < z; x++) {
openedChildren[x].classList.remove('open')
}
}
}
}
}
}
return parentItem
}
_toggleAnimation(open, item, closeChildren) {
const toggleLink = Menu._getLink(item, true)
const menu = Menu._findMenu(item)
Menu._unbindAnimationEndEvent(item)
const linkHeight = Math.round(toggleLink.getBoundingClientRect().height)
item.style.overflow = 'hidden'
const clearItemStyle = () => {
item.classList.remove('menu-item-animating')
item.classList.remove('menu-item-closing')
item.style.overflow = null
item.style.height = null
this.update()
}
if (open) {
item.style.height = `${linkHeight}px`
item.classList.add('menu-item-animating')
item.classList.add('open')
Menu._bindAnimationEndEvent(item, () => {
clearItemStyle()
this._onOpened(this, item, toggleLink, menu)
})
setTimeout(() => {
item.style.height = `${linkHeight + Math.round(menu.getBoundingClientRect().height)}px`
}, 50)
} else {
item.style.height = `${linkHeight + Math.round(menu.getBoundingClientRect().height)}px`
item.classList.add('menu-item-animating')
item.classList.add('menu-item-closing')
Menu._bindAnimationEndEvent(item, () => {
item.classList.remove('open')
clearItemStyle()
if (closeChildren) {
const opened = item.querySelectorAll('.menu-item.open')
for (let i = 0, l = opened.length; i < l; i++) opened[i].classList.remove('open')
}
this._onClosed(this, item, toggleLink, menu)
})
setTimeout(() => {
item.style.height = `${linkHeight}px`
}, 50)
}
}
static _bindAnimationEndEvent(el, handler) {
const cb = e => {
if (e.target !== el) return
Menu._unbindAnimationEndEvent(el)
handler(e)
}
let duration = window.getComputedStyle(el).transitionDuration
duration = parseFloat(duration) * (duration.indexOf('ms') !== -1 ? 1 : 1000)
el._menuAnimationEndEventCb = cb
TRANSITION_EVENTS.forEach(ev => el.addEventListener(ev, el._menuAnimationEndEventCb, false))
el._menuAnimationEndEventTimeout = setTimeout(() => {
cb({ target: el })
}, duration + 50)
}
_getItemOffset(item) {
let curItem = this._inner.childNodes[0]
let left = 0
while (curItem !== item) {
if (curItem.tagName) {
left += Math.round(curItem.getBoundingClientRect().width)
}
curItem = curItem.nextSibling
}
return left
}
static _promisify(fn, ...args) {
const result = fn(...args)
if (result instanceof Promise) {
return result
}
if (result === false) {
return Promise.reject()
}
return Promise.resolve()
}
get _innerWidth() {
const items = this._inner.childNodes
let width = 0
for (let i = 0, l = items.length; i < l; i++) {
if (items[i].tagName) {
width += Math.round(items[i].getBoundingClientRect().width)
}
}
return width
}
get _innerPosition() {
return parseInt(this._inner.style[this._rtl ? 'marginRight' : 'marginLeft'] || '0px', 10)
}
set _innerPosition(value) {
this._inner.style[this._rtl ? 'marginRight' : 'marginLeft'] = `${value}px`
return value
}
static _unbindAnimationEndEvent(el) {
const cb = el._menuAnimationEndEventCb
if (el._menuAnimationEndEventTimeout) {
clearTimeout(el._menuAnimationEndEventTimeout)
el._menuAnimationEndEventTimeout = null
}
if (!cb) return
TRANSITION_EVENTS.forEach(ev => el.removeEventListener(ev, cb, false))
el._menuAnimationEndEventCb = null
}
closeAll(closeChildren = this._closeChildren) {
const opened = this._el.querySelectorAll('.menu-inner > .menu-item.open')
for (let i = 0, l = opened.length; i < l; i++) this.close(opened[i], closeChildren)
}
static setDisabled(el, disabled) {
Menu._getItem(el, false).classList[disabled ? 'add' : 'remove']('disabled')
}
static isActive(el) {
return Menu._getItem(el, false).classList.contains('active')
}
static isOpened(el) {
return Menu._getItem(el, false).classList.contains('open')
}
static isDisabled(el) {
return Menu._getItem(el, false).classList.contains('disabled')
}
update() {
if (this._scrollbar) {
this._scrollbar.update()
}
}
manageScroll() {
const { PerfectScrollbar } = window
const menuInner = document.querySelector('.menu-inner')
if (window.innerWidth < window.Helpers.LAYOUT_BREAKPOINT) {
if (this._scrollbar !== null) {
// window.Helpers.menuPsScroll.destroy()
this._scrollbar.destroy()
this._scrollbar = null
}
menuInner.classList.add('overflow-auto')
} else {
if (this._scrollbar === null) {
const menuScroll = new PerfectScrollbar(document.querySelector('.menu-inner'), {
suppressScrollX: true,
wheelPropagation: false
})
this._scrollbar = menuScroll
}
menuInner.classList.remove('overflow-auto')
}
}
destroy() {
if (!this._el) return
this._unbindEvents()
const items = this._el.querySelectorAll('.menu-item')
for (let i = 0, l = items.length; i < l; i++) {
Menu._unbindAnimationEndEvent(items[i])
items[i].classList.remove('menu-item-animating')
items[i].classList.remove('open')
items[i].style.overflow = null
items[i].style.height = null
}
const menus = this._el.querySelectorAll('.menu-menu')
for (let i2 = 0, l2 = menus.length; i2 < l2; i2++) {
menus[i2].style.marginRight = null
menus[i2].style.marginLeft = null
}
this._el.classList.remove('menu-no-animation')
if (this._wrapper) {
this._prevBtn.parentNode.removeChild(this._prevBtn)
this._nextBtn.parentNode.removeChild(this._nextBtn)
this._wrapper.parentNode.insertBefore(this._inner, this._wrapper)
this._wrapper.parentNode.removeChild(this._wrapper)
this._inner.style.marginLeft = null
this._inner.style.marginRight = null
}
this._el.menuInstance = null
delete this._el.menuInstance
this._el = null
this._animate = null
this._accordion = null
this._closeChildren = null
this._onOpen = null
this._onOpened = null
this._onClose = null
this._onClosed = null
if (this._scrollbar) {
this._scrollbar.destroy()
this._scrollbar = null
}
this._inner = null
this._prevBtn = null
this._wrapper = null
this._nextBtn = null
}
}
export { Menu }
Zerion Mini Shell 1.0