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- /* istanbul ignore next */
- import Vue from 'vue'
- const isServer = Vue.prototype.$isServer
- const SPECIAL_CHARS_REGEXP = /([\:\-\_]+(.))/g
- const MOZ_HACK_REGEXP = /^moz([A-Z])/
- const ieVersion = isServer ? 0 : Number(document.documentMode)
- /* istanbul ignore next */
- const trim = function(string) {
- return (string || '').replace(/^[\s\uFEFF]+|[\s\uFEFF]+$/g, '')
- }
- /* istanbul ignore next */
- const camelCase = function(name) {
- return name
- .replace(SPECIAL_CHARS_REGEXP, function(_, separator, letter, offset) {
- return offset ? letter.toUpperCase() : letter
- })
- .replace(MOZ_HACK_REGEXP, 'Moz$1')
- }
- /* istanbul ignore next */
- export const on = (function() {
- if (!isServer && document.addEventListener) {
- return function(element, event, handler) {
- if (element && event && handler) {
- element.addEventListener(event, handler, false)
- }
- }
- } else {
- return function(element, event, handler) {
- if (element && event && handler) {
- element.attachEvent('on' + event, handler)
- }
- }
- }
- })()
- /* istanbul ignore next */
- export const off = (function() {
- if (!isServer && document.removeEventListener) {
- return function(element, event, handler) {
- if (element && event) {
- element.removeEventListener(event, handler, false)
- }
- }
- } else {
- return function(element, event, handler) {
- if (element && event) {
- element.detachEvent('on' + event, handler)
- }
- }
- }
- })()
- /* istanbul ignore next */
- export const once = function(el, event, fn) {
- var listener = function() {
- if (fn) {
- fn.apply(this, arguments)
- }
- off(el, event, listener)
- }
- on(el, event, listener)
- }
- /* istanbul ignore next */
- export function hasClass(el, cls) {
- if (!el || !cls) return false
- if (cls.indexOf(' ') !== -1) throw new Error('className should not contain space.')
- if (el.classList) {
- return el.classList.contains(cls)
- } else {
- return (' ' + el.className + ' ').indexOf(' ' + cls + ' ') > -1
- }
- }
- /* istanbul ignore next */
- export function addClass(el, cls) {
- if (!el) return
- var curClass = el.className
- var classes = (cls || '').split(' ')
- for (var i = 0, j = classes.length; i < j; i++) {
- var clsName = classes[i]
- if (!clsName) continue
- if (el.classList) {
- el.classList.add(clsName)
- } else if (!hasClass(el, clsName)) {
- curClass += ' ' + clsName
- }
- }
- if (!el.classList) {
- el.className = curClass
- }
- }
- /* istanbul ignore next */
- export function removeClass(el, cls) {
- if (!el || !cls) return
- var classes = cls.split(' ')
- var curClass = ' ' + el.className + ' '
- for (var i = 0, j = classes.length; i < j; i++) {
- var clsName = classes[i]
- if (!clsName) continue
- if (el.classList) {
- el.classList.remove(clsName)
- } else if (hasClass(el, clsName)) {
- curClass = curClass.replace(' ' + clsName + ' ', ' ')
- }
- }
- if (!el.classList) {
- el.className = trim(curClass)
- }
- }
- /* istanbul ignore next */
- export const getStyle =
- ieVersion < 9
- ? function(element, styleName) {
- if (isServer) return
- if (!element || !styleName) return null
- styleName = camelCase(styleName)
- if (styleName === 'float') {
- styleName = 'styleFloat'
- }
- try {
- switch (styleName) {
- case 'opacity':
- try {
- return element.filters.item('alpha').opacity / 100
- } catch (e) {
- return 1.0
- }
- default:
- return element.style[styleName] || element.currentStyle ? element.currentStyle[styleName] : null
- }
- } catch (e) {
- return element.style[styleName]
- }
- }
- : function(element, styleName) {
- if (isServer) return
- if (!element || !styleName) return null
- styleName = camelCase(styleName)
- if (styleName === 'float') {
- styleName = 'cssFloat'
- }
- try {
- var computed = document.defaultView.getComputedStyle(element, '')
- return element.style[styleName] || computed ? computed[styleName] : null
- } catch (e) {
- return element.style[styleName]
- }
- }
- /* istanbul ignore next */
- export function setStyle(element, styleName, value) {
- if (!element || !styleName) return
- if (typeof styleName === 'object') {
- for (var prop in styleName) {
- if (styleName.hasOwnProperty(prop)) {
- setStyle(element, prop, styleName[prop])
- }
- }
- } else {
- styleName = camelCase(styleName)
- if (styleName === 'opacity' && ieVersion < 9) {
- element.style.filter = isNaN(value) ? '' : 'alpha(opacity=' + value * 100 + ')'
- } else {
- element.style[styleName] = value
- }
- }
- }
- export const isScroll = (el, vertical) => {
- if (isServer) return
- const determinedDirection = vertical !== null || vertical !== undefined
- const overflow = determinedDirection ? (vertical ? getStyle(el, 'overflow-y') : getStyle(el, 'overflow-x')) : getStyle(el, 'overflow')
- return overflow.match(/(scroll|auto)/)
- }
- export const getScrollContainer = (el, vertical) => {
- if (isServer) return
- let parent = el
- while (parent) {
- if ([window, document, document.documentElement].includes(parent)) {
- return window
- }
- if (isScroll(parent, vertical)) {
- return parent
- }
- parent = parent.parentNode
- }
- return parent
- }
- export const isInContainer = (el, container) => {
- if (isServer || !el || !container) return false
- const elRect = el.getBoundingClientRect()
- let containerRect
- if ([window, document, document.documentElement, null, undefined].includes(container)) {
- containerRect = {
- top: 0,
- right: window.innerWidth,
- bottom: window.innerHeight,
- left: 0,
- }
- } else {
- containerRect = container.getBoundingClientRect()
- }
- return (
- elRect.top < containerRect.bottom &&
- elRect.bottom > containerRect.top &&
- elRect.right > containerRect.left &&
- elRect.left < containerRect.right
- )
- }
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